UNIVERSITY OF MARIBOR

FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

ANNUAL REPORT RESEARCH ACTIVITIES 2005

MARIBOR, APRIL 2006 UNIVERSITY OF MARIBOR FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE Smetanova ulica 17, 2000 MARIBOR SLOVENIA Phone: +386 2 220 70 00 Fax: +386 2 251 11 78 http://www.feri.uni-mb.si

ANNUAL REPORT Research activities 2005

Editors: Dr. Danilo Korže and Prof. Dr. Borut Žalik Copy edit: George Yeoman, MA Database design: Štefan Masič Word-processing converter design: Dr. Danilo Korže Photos and text processing: Dr. Danilo Korže Photos: Gerhard Angleitner, MSc Typography and cover design: Dr. Miha Završnik and Repro studio OK, d. o. o., Maribor

ISSN 1408-6328

Published by: Faculty of Electrical Engineering and Computer Science, Maribor Print: Publishing and Printing Dept. of Technical Faculties of Maribor Number of copies: 250 Year of publication: April 2006

CONTENTS

FOREWORD ...... FW – 4

Study Programmes, Options and Emphasis ...... FW – 5

Graduates of the Faculty of Electrical Engineering and Computer Science ...... FW – 16

Masters and PhD Degrees ...... FW – 17

Research by Institutes and Laboratories ...... FW – 23

Programme Units ...... FW – 25

INSTITUTE OF AUTOMATION ...... AU – 1

Systems and Control Laboratory ...... AU – 4

Signal Processing and Remote Control Laboratory ...... AU – 14

Process Automation Laboratory ...... AU – 23

Measurements Laboratory ...... AU – 33

Electro–Optical and Sensor Systems Laboratory ...... AU – 41

INSTITUTE OF ELECTRONICS ...... EL – 1

Digital and Information Systems Laboratory ...... EL – 4

Electronic Systems Laboratory ...... EL – 9

Microcomputer Systems Laboratory ...... EL – 12

Digital Signal Processing Laboratory ...... EL – 19

INSTITUTE OF POWER ENGINEERING ...... PE – 1

Electrical Machines Laboratory ...... PE – 4

Power Engineering Laboratory ...... PE – 11

Electromechanical Systems Control Laboratory ...... PE – 35 Fundamentals and Theory of Electrotechnics Laboratory ...... PE – 42

Applied Electromagnetics Laboratory ...... PE – 46

INSTITUTE OF ROBOTICS ...... RO – 1

Power Electronics Laboratory ...... RO – 4

Industrial Robotics Laboratory ...... RO – 11

Kinematics and Simulations Laboratory ...... RO – 32

INSTITUTE OF MATHEMATICS AND PHYSICS ...... MP – 1

Applied Mathematics Laboratory ...... MP – 3

INSTITUTE OF COMPUTER SCIENCE ...... CS – 1

Computer Graphics and Artificial Intelligence Laboratory ...... CS – 5

Computer Architecture and Languages Laboratory ...... CS – 7

System Design Laboratory ...... CS – 15

System Software Laboratory ...... CS – 26

Heterogenous Computer Systems Laboratory ...... CS – 36

Geometric Modelling and Multimedia Algorithms Laboratory ...... CS – 41

INSTITUTE OF INFORMATICS ...... IN – 1

Information Systems Laboratory ...... IN – 4

Database Technologies Laboratory ...... IN – 22

Computer Mediated Communication Laboratory ...... IN – 36

Real–Time Systems Laboratory ...... IN – 39

INSTITUTE OF MEDIA COMMUNICATIONS...... MC – 1

INSTITUTE OF TELECOMMUNICATIONS...... TC – 1

Faculty of Electrical Engineering and Computer Science FW – 1 and Computer Science Electrical Engineering The new G2 extension of the Faculty Buildings of the Faculties Engineering University Maribor

Photo: Gerhard Angleitner FW – 2 Faculty of Electrical Engineering and Computer Science

Faculty of Electrical Engineering and Computer Science Dean: Prof. Dr. Igor Tičar

Institute of Institute of Automation Computer Science Head: Head: Prof. Dr. Karel Jezernik Prof. Dr. Viljem Žumer

Institute of Institute of Electronics Informatics Head: Head: Prof. Dr. Bogomir Horvat Prof. Dr. Ivan Rozman

Institute of Institute of Power Robotics Engineering Head: Head: Prof. Dr. Karel Jezernik Prof. Dr. Ivan Zagradišnik

Institute of Institute of Institute of Mathematics and Telecommunications Media Physics Head: Communications Head: Prof. Dr. Bogomir Horvat Head: Prof. Dr. Vitodrag Prof. Dr. Tatjana Welzer- Kumperščak Družovec Faculty of Electrical Engineering and Computer Science FW – 3

Prof. Dr. Igor Tičar Dean

Prof. Dr. Zmago Brezočnik Prof. Dr. Borut Žalik Deputy Dean of Education Deputy Dean of Research

FW – 4 Faculty of Electrical Engineering and Computer Science

FOREWORD

The Faculty of Electrical Engineering and Computer Science has over 3000 enrolled students and embodies the largest technical faculty in northeast Slovenia. The size and strength of our department has generated a recognizable reputation that has enabled active involvement in scientific research and technology development in Slovenia and abroad. This annual report reflects on the scientific research that has been investigated by our faculty in 2005. Several notable accomplishments suggest that our department is active and successful. Indeed, scientific research continues to offer important comparative advantages in the design and implementation of Bologna programmes. Science, research and industrial projects are the foundation for successful education in any technical discipline. Our professors have distinguished themselves by publishing their scientific research results in respectable journals, and becoming locally and internationally well-known through active involvement in international research projects. The professors have led and implemented extensive scientific research and technological development projects, and have protected their innovations by international patents. I am proud that in our midst are many individuals who have achieved respectable results. Their success provides the tools to pass-on their knowledge and experience to generations of students and prepare them for the challenges of a global knowledge-based society. Several of our faculty members have served as guest professors at international universities, which provided an opportunity for transfering their knowledge to students abroad. All of these efforts have assured the reputation of our department through the growth and development of our faculty. Our faculty has shown that it is possible to develop top science that is internationally recognized. The exceptional achievements of our students also deserve recognition. A group of four students of computer science, option software, participated in the finals of the Imagine Cup competition in Japan. They won regional qualifiers in Slovenia and central/eastern Europe before earning a respectable 4th-6th place at the international event. From this exposure in the Imagine Cup, the names of our students, faculty, university and country have been mentioned along with the most prominent researchers in the world. Their success has been recognized further by British Telecom which, at the beginning of the year 2006, invited our students to the Innovation Accelerator workshop. Our faculty combines knowledge from different fields: electrotechnics, electronics, computer science, telecommunications, and media communications. These different disciplines enable our department to act synergistically. I strongly believe that collaboration among different laboratories and institutes will become more intensive in the near future. To achieve our common goals and to overcome short term difficulties we must share our knowledge, research infrastructure, and human resources. The year 2005 was successful and we are looking forward with great expectations to future achievements. Without doubt, 2006 will be an important turning-point for our department. The new building (G-2) will be constructed. This will require a lot of effort to finish, but in the end it will join institutes, students, and our faculty under one roof. New and modern lecture rooms, offices and laboratories will be gained, which will be comparable to the existing infrastructure at our sister departments in the neighbourhood, and will enable good working conditions for our students and employees. Therefore, I am convinced that our achievements in the future will be at least as good as in the year 2005.

Dean Prof. Dr. Igor Tičar Faculty of Electrical Engineering and Computer Science FW – 5

STUDY PROGRAMMES, OPTIONS AND EMPHASIS

Undergraduate studies The Faculty of Electrical Engineering and Computer Science offers two separate types of study programmes, each leading to a different type of degree: academic and professional. Four study programmes with several options are offered towards the academic degrees and two study programmes towards the professional degrees. The academic-degree study programme in Electrical Engineering includes the following options: • Automation with concentration on: - Production Automation - Process Automation • Electronics with concentration on: - Computer Electronics - Telecommunications Electronics • Power Engineering with concentration on: - Power Engineering - Electromechanical Systems Control - Electromagnetics • Mechatronics with concentration on: - Communications - Regulations - Instrumentation - Actuation - Embedded Systems - Programmable Tracking Systems The option of Mechatronics is interdisciplinary, supported by the Faculty of Electrical Engineering and Computer Science and by the Faculty of Mechanical Engineering. The computer science students are also eligible for this option after completing the first two years in computer science. Academic-degree studies last nine semesters and include lectures, exercises, and practical placements in industry, with the exception of Mechatronics where the duration is eight semesters. The first two years are the same for all options. The professional higher education programme in Electrical Engineering comprises the following options: FW – 6 Faculty of Electrical Engineering and Computer Science

• Automation with concentration on: - Process Automation - Robotics • Electronics with concentration on: - Industrial Electronics - Computer Electronics • Power Engineering with concentration on: - Power Engineering - Electromechanical Systems Control - Electromechanical Devices Construction • Telecommunications The professional higher education programmes last six semesters consisting of lectures and exercises, and an additional semester of practical placements in industry. The first year of studies is common for all options. Electrical engineering is also offered as a combined interdisciplinary academic-degree study as electrical engineering with economics. It is organised by the Faculty of Electrical Engineering and Computer Science and by the Faculty of Business and Economics in Maribor. The duration of studies is eight semesters with about 2/3 as major subjects given in electrical engineering and 1/3 in business and economics. Graduates of electrical engineering with economics are qualified to proceed with their studies towards Masters or PhD degrees either in electrical engineering or in business and economics. The academic-degree study programme in Electrical Engineering with Economics includes the following options: • Automation • Electronics • Power Engineering Faculty of Electrical Engineering and Computer Science FW – 7

Electrical Engineering Studies

Academic degree studies Studies to professional higher education degrees

PhD

g 3rd and 4th Year

f

Masters degree studies - Electrical Engineering e - Electronic Vacuum Technology

2nd Year d 1st Year

Academic degree Professional higher education degree

Undergraduate studies Undergraduate studies 6 semesters of studies and 1 - Automation (9 semesters) semester of practice in industry - Electronics (9 semesters) - Automation - Power Engineering (9 semesters) - Electronics - Mechatronics (8 semesters) - Power Engineering - Telecommunications

Matura Examination (an external examination) or Professional Matura or Matura Professional Matura and additionally Examination an examination in one of the matura (an internal examination) subjects (5th subject) FW – 8 Faculty of Electrical Engineering and Computer Science

The academic-degree study programme in Telecommunications consists of two years of study with common fundamental subjects and two additional years with a variety of choices. Therefore, the studies last eight semesters and include lectures, exercises, and practical placements in industry.

Telecommunications Studies

Academic degree studies

PhD

g 3rd and 4th Year

f Masters degree studies e

2nd Year

d

1st Year

Academic degree

Undergraduate studies 8 semesters

Matura Examination (an external examination) or Professional Matura and additionally an examination in one of the matura subjects (5th subject)

Faculty of Electrical Engineering and Computer Science FW – 9

The academic-degree study programme in Computer and Information Science includes the following options: • Software with concentration on: - Systems - Engineering Informatics • Information Science with concentration on: - Business Information Systems - Process Information Systems Academic-degree studies last nine semesters and include lectures, exercises, and practical placements in industry. The first two years are the same for all options. After the first two years in computer science studies, students can continue with the mechatronics option within the electrical engineering programme. The professional higher education programme in Computer and Information Science comprises the following options: • Software • Information science • Logic and systems Professional higher education programmes last six semesters consisting of lectures and exercises and an additional semester of practical placements in industry. The first year of studies is common for all options.

FW – 10 Faculty of Electrical Engineering and Computer Science

Computer and Information Science Studies

Academic degree studies Studies to professional higher education degrees

PhD

g 3rd and 4th Year

f Master degree studies e - Computer and Information Science

2nd Year

d 1st Year

Academic degree Professional higher education degree

Undergraduate studies Undergraduate studies 9 semesters 6 semesters of studies and 1 semester of - Software practice in industry - Informatics Science - Logic and Systems - Software - Informatics Science Matura Examination (an external examination) or Professional Matura and additionally an examination in one of the matura Professional Matura or Matura Examination subjects (5th subject) (an external examination)

Faculty of Electrical Engineering and Computer Science FW – 11

In the academic year 2002/03 the Faculty of Electrical Engineering and Computer Science of Maribor started a new academic studies programme in Media Communications. The first two years are common, while in the third year the students are able to specialise in one of two options: • RTV Production and • Interactive Graphic Communication. The total duration of studies is eight semesters. The title received after a successful completion of diploma work will be a University Diploma in Media Communicology. FW – 12 Faculty of Electrical Engineering and Computer Science

Media Communications

Academic degree studies

PhD g 3rd and 4th Year

f

Masters degree studies e

2nd Year d 1st Year

Academic degree

Undergraduate studies 8 semesters - RTV Production - Interactive Graphic Communication

Matura Examination (an external examination) or Professional Matura and additionally an examination in one of the matura subjects (5th subject)

Faculty of Electrical Engineering and Computer Science FW – 13

Graduate Studies

Graduate studies are basically aimed at the acquisition of in-depth theoretical and applied knowledge, enabling the prospective graduate to carry out independent and creative research in various technical sciences.

Masters degree and PhD studies

In 2005, masters degree and doctoral studies were organised as shown in the preceding diagrams in combination with the undergraduate schemes. It was enhanced with additional subjects. All the subjects were also grouped into two subsets: the smaller one contains majors according to different study options, while the larger group comprises choices. Every student must select at least two majors belonging to his or her study option.

Three graduate programmes are currently being offered:

Electrical Engineering

Electronic Vacuum Technology

Computer and Information Science

Their supervisor selects the following for every graduate student entering the first year of studies: • the courses that the student will attend and the exams the student will complete • a research project that will be individually assigned to and conducted by the student The student must collect a minimum of 120 credits during the first two years. Out of this total, 75 credits must be awarded for the examinations, while 45 credits must be awarded for the reports completed on their individual research projects. The student is awarded 15 credits for every passed exam and publicly presented report on individual research projects.

Terms for Progress The terms of reference for the postgraduate studies are specified by the Statute of the University of Maribor and by annual public scrutiny. Other student obligations are depicted by labels d through g in the graphical presentation of academic-degree studies. d Minimum of 30 credits. e The student must pass all the exams during the first two years and present the reports on their individual research work with a minimum average grade of 9 (out of 10). FW – 14 Faculty of Electrical Engineering and Computer Science

According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 2 points, based on their scientific research activities. Additionally, a recommendation letter from the student's doctoral studies supervisor is requested. f According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 2 points, based on their scientific research activities. g During the third year of study, students must report twice on their research work, and once during the fourth year. This totals to 45 credits. Additionally 75 credits must be awarded for a successful presentation and defence of doctoral dissertation. According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 5 points, based on their scientific research activities. At least 1 point must be awarded for publishing research findings in the journals cited in the INSPEC database. Masters degree studies are research oriented and include an introduction to research, the development of students’ capacities for research work in individual scientific fields and disciplines, and the study of subjects providing the in-depth and broad knowledge of subjects needed for the preparation of a masters thesis. Throughout the programme of study, graduate students can use laboratories and the computer infrastructure of the Faculty of Electrical Engineering and Computer Science, as well as those of other engineering faculties at the university. Studies leading to Masters degrees grant the graduates a professional title of Master of Science in Electrical Engineering or Master of Science in Computer Science. PhD research is carried out in research laboratories; a more detailed description of these programmes is given in the continuation of this report. Research teams consisting of doctoral students and graduate students for individual areas of research are commonly formed. Some research teams include participants from several laboratories. International contacts developed through the teams are especially important for doctoral students, because this is the only way for them to take part in the international transfer of knowledge and exchange research achievements. Some of our doctoral students carry out part of their research abroad and even have co-mentors in other countries. We believe that creativity, openness, peer support, and reciprocity are the bedrock of any academic co-operation. Therefore, the Faculty of Electrical Engineering and Computer Science regularly hosts foreign undergraduate, graduate, and postdoctoral students. Our new organisation Faculty of Electrical Engineering and Computer Science FW – 15 of doctoral studies also leads to a greater compatibility with other universities, making it easier for student exchange and mobility. FW – 16 Faculty of Electrical Engineering and Computer Science

GRADUATES OF THE FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

Two different types of graduate studies are available: those leading to academic degrees and studies leading to professional higher education degrees. The number of 2005 graduates is given in the table below.

2005 Graduates

Option Professional Undergraduate higher education academic degrees degrees Electrical Engineering 73 53 Computer and Information Science 21 23 Electrical Engineering with Economics – 13

Faculty of Electrical Engineering and Computer Science FW – 17

MASTERS AND PhD DEGREES

12 masters degree students successfully defended their Masters theses and 12 PhD students their dissertations. 2005 Masters theses

Author Title Date of defence COBISS number Mentor Co-mentor

Matjaž JAUŠOVEC Analiza funkcij podatkovnega rudarjenja za podporo napovedovanju (Datamining functions analysis for prediction support) Mar. 23, 2005 9536534 Dr. Tatjana Welzer Družovec Dr. Bojan Novak

Damjan JAVERNIK Vgrajeni Linux v mikroračunalniškem sistemu (Embedded Linux in microcontroller systems) Jan. 27, 2005 9613846 Dr. Mitja Solar Dr. Bogomir Horvat

Beno KLOPČIČ Modeliranje, analiza in sinteza sistema za točkasto varjenje (Modelling, analysis and synthesis of a spot welding system) April 1, 2005 9537814 Dr. Drago Dolinar Dr. Gorazd Štumberger

Roman KOLENKO Študija izvedljivosti povečanja pretoka v HE Dravograd (The feasibility study into the flow rise in Dravograd power station) Oct. 21, 2005 9998102 Dr. Jože Voršič Dr. Jože Pihler

Ludvik KOLMAN Enofazno galvansko ločeni usmernik s korekcijo faktorja moči (Single-stage single-switch isolated with power-factor-corrected April 14, 2005 converter) 9575958 Dr. Miro Milanovič Dr. Karel Jezernik FW – 18 Faculty of Electrical Engineering and Computer Science

Author Title Date of defence COBISS number Mentor Co-mentor

Mitja KOPRIVŠEK Korekcija faktorja moči nelinearnih elektronskih bremen z aktivnim filtriranjem Mar. 21, 2005 (Power factor correction for nonlinear electronic loads with active filters) 9555478 Dr. Božidar Hribernik Dr. Martin Bizjak

Andrej KOSI Hibridni oscilator za digitalno zemeljsko televizijo (Hybrid oscila tor for digital terrestrial television) April 20, 2005 9538070 Dr. Mitja Solar Dr. Bogomir Horvat

Samo LOGIN Algoritmi v spletnih iskalnikih (Algorithms in web search engines) July 19, 2005 9837334 Dr. Janez Brest Dr. Saša Divjak

Simon TAJNŠEK Nov sistem nadzemnih vodov s polizoliranimi vodniki (New system of overhead lines with covered conductors) Dec. 9, 2005 10192662 Dr. Jože Pihler Dr. Igor Tičar

Ladislav TOMŠIČ Prigrajeni sistem plinskih turbin in njihov vpliv in vloga v regulacijskih sistemih elektroenergetskega sistema Slovenije Mar. 18, 2005 (Boosting system of added gas turbine and its influence on and role in the regulation systems of the slovenian electricity supply system) 9537046 Dr. Igor Tičar Dr. Jože Pihler

Faculty of Electrical Engineering and Computer Science FW – 19

Author Title Date of defence COBISS number Mentor Co-mentor

Ivan VERDONIK Zaščita računalniških sistemov s statističnim detektorjem vdorov Mar. 23, 2005 (Protection of computer systems by statistical intrusion detection) 9473046 Dr. Bojan Novak Dr. Tatjana Welzer Družovec

Primož ŽERDIN Univerzalni interni komunikacijski protokol za aplikacije, ki omogočajo avtomatsko prodajo Dec. 5, 2005 (Universal internal communication protocol for automatic point of sale applications) 10059798 Dr. Dali Đonlagić Dr. Boris Tovornik

FW – 20 Faculty of Electrical Engineering and Computer Science

2005 PhD theses Author Title Date of defence COBISS number Mentor Co-mentor

Tomaž ALJAŽ Zasnova večstoritvenega posrednika v telekomunikacijskih omrežjih naslednje generacije Dec. 14, 2005 (The concept of multi-service mediator in telecommunication next generation networks) 10097430 Dr. Gorazd Kandus

Simon BELOGLAVEC Metoda za realizacijo kompleksnih sestavljenih načrtovalskih vzorcev Oct. 17, 2005 (A method for the realization of complex-composite design patterns) 9955606 Dr. Marjan Heričko

Edvard CIBULA Uporaba površinske mikroobdelave optičnega vlakna v senzorski tehniki in fotoniki May 19, 2005 (Applications of surface micromachinning of the optical fiber in sensors technology and photonics) 9664790 Dr. Denis Đonlagić

Matjaž DIVJAK Ocenjevanje modelov in postopkov za 3D sledenje gibanju človeškega telesa s stereokamero Oct. 14, 2005 (Evaluation of models and procedures for 3D tracking of human body using a stereocamera) 223178496 Dr. Damjan Zazula

Matej GOMBOŠI Algoritmi vsebnosti pri geometrijskih očrtjih (Containment algorithms for geometric buffers) April 14, 2005 9574116 Dr. Borut Žalik Faculty of Electrical Engineering and Computer Science FW – 21

Author Title Date of defence COBISS number Mentor Co-mentor

Gregor KLAJNŠEK Postopek brezizgubnega stiskanja vokselskih podatkov s štiriškimi drevesi Dec. 14, 2005 (An algorithm for lossless compression of voxel data using quadtrees) 10129174 Dr. Borut Žalik

Simon KOLMANIČ Odvoj poljubnih ploskev z odpravljanjem prekrivkov v ravninskem vzorcu Oct. 27, 2005 (Arbitrary surface flattening by elimination of overlapping in the flat pattern) 10018326 Dr. Nikola Guid

Bogdan LIPUŠ Prostorsko modeliranje oblakov v računalniški grafiki (Volumetric cloud modelling in computer graphics) May 6, 2005 9575446 Dr. Nikola Guid

Robert MEOLIC Akcijska logika dreves izvajanj z operatorjem unless (Action computation tree logic with unless operator) Sep. 16, 2005 9981718 Dr. Tatjana Kapus

Davorin OSEBIK Novi postopki implementacije adaptivnih digitalnih sit s programiranimi vezji July 14, 2005 (New procedures for implementation of adaptive digital FIR filters into programmable logic cell arrays)

9964310 Dr. Rudolf Babič

FW – 22 Faculty of Electrical Engineering and Computer Science

Author Title Date of defence COBISS number Mentor Co-mentor

Aleš POLIČ Matrični pristop k vodenju diskretnih dogodkovnih sistemov (Matrix based approach to control of discrete event systems: Dec. 5, 2005 a recursive description of logically controlled systems) 10125334 Dr. Karel Jezernik

Aleš ŽIVKOVIČ Metoda za določanje obsega objektno-orientiranih programskih projektov Feb. 3, 2005 (Object-oriented software size estimation) Dr. Ivan Rozman

Faculty of Electrical Engineering and Computer Science FW – 23

RESEARCH BY INSTITUTES AND LABORATORIES

The Faculty of Electrical Engineering and Computer Science is registered with the Ministry of Science and Technology as a research organisation incorporating 14 research units. 1. Computer Architecture and Languages Laboratory Research unit head: Prof. Dr. Viljem Žumer The research unit consists of the Computer Architecture and Languages Laboratory and the Heterogeneous Computer Systems Laboratory staff.

2. Institute of Electronics Research unit head: Prof. Dr. Bogomir Horvat The research unit consists of the staffs of the Digital and Information Systems Laboratory, Electronic Systems Laboratory, Microcomputer Systems Laboratory, and Digital Signal Processing Laboratory.

3. Institute of Automation Research unit head: Prof. Dr. Karel Jezernik The research unit consists of the staffs of the Systems and Control Laboratory, Signal Processing and Remote Control Laboratory, Process Automation Laboratory, Measurements Laboratory, and Electro-Optical and Sensory Systems Laboratory.

4. Institute of Robotics Research unit head: Prof. Dr. Karel Jezernik The research unit consists of the staffs of the Power Electronics Laboratory, Industrial Robotics Laboratory, and Kinematics and Simulations Laboratory.

5. Applied Electromagnetics Research unit head: Prof. Dr. Mladen Trlep The research unit consists of the staffs of the Applied Electromagnetics Laboratory and Fundamentals and Theory of Electrotechnics Laboratory.

6. Electrical Machines Laboratory Research unit head: Prof. Dr. Ivan Zagradišnik The research unit consists of the Electrical Machines Laboratory staff. FW – 24 Faculty of Electrical Engineering and Computer Science

7. Electromechanical Systems Control Laboratory Research unit head: Prof. Dr. Drago Dolinar The research unit consists of the Electromechanical Systems Control Laboratory staff.

8. Computer Graphics and Artificial Intelligence Laboratory Research unit head: Prof. Dr. Nikola Guid The research unit consists of the Computer Graphics and Artificial Intelligence Laboratory staff.

9. Institute of Information Science Research unit head: Prof. Dr. Ivan Rozman The research unit consists of the staffs of the Information Systems Laboratory, Database Technologies Laboratory, Computer Mediated Communication Laboratory, and Real-Time Systems Laboratory.

10. Systems Software Laboratory Research unit head: Prof. Dr. Damjan Zazula The research unit consists of the System Software Laboratory staff.

11. Power Engineering Laboratory Research unit head: Prof. Dr. Jože Voršič The research unit consists of the Power Engineering Laboratory staff.

12. Institute of Mathematics and Physics Research unit head: Prof. Dr. Vitodrag Kumperščak The research unit consists of the Applied Mathematics Laboratory staff.

13. System Design Laboratory Research unit head: Prof. Dr. Peter Kokol The research unit consists of the System Design Laboratory staff.

14. Geometric Modelling and Multimedia Algorithms Laboratory Research unit head: Prof. Dr. Borut Žalik The research unit consists of the Geometric Modelling and Multimedia Algorithms Laboratory staff. Faculty of Electrical Engineering and Computer Science FW – 25

PROGRAMME UNITS

Seven programme units exist at the Faculty of Electrical Engineering and Computer Science, which are registered with the Slovene Research Agency. The work in these programme units represents the basics of fundamental research at our faculty, as they include the majority of our researchers. The quality of programme units is examined every year. A condensed overview for 2005 is collated in the sequel.

1. Telematic Programme unit head: Prof. Dr. Žarko Čučej This programme unit consists of the staff of the Signal Processing and Remote Control Laboratory, Systems and Control Laboratory and Digital and Information Systems Laboratory. Scientific disciplines: Computer Science, Informatics, Metrology, Systems, Telecommunication Engineering. Telematics - synergy of telecommunications and information- is a foundation of modern information society. It enables services, which are changing the paradigm of personal life, industry, and connection to the world. The company Ultra and UM-FERI Maribor, the founder of the program Telematics, have combined their development and marketing goals on one side, and research and pedagogic goals on the other side to encourage research in the fields of telecommunication and information, and to accelerate the transfer of knowledge and achievements from academia to industry. Our activities are focused on the following three areas: -Extraction, transmission and dissemination of information, where we focus our investigation on multi-dimensional and multi-rate signal processing, statistical methods, modeling, information transmission, remote sensing, information mining, etc. -Life quality and safety, where we research and develop techniques for mobile remote monitoring of the environment, people's health, and mobile interactive information, data and knowledge access. -Services, where we research, and particularly develop system applications for e-payment, traffic management and monitoring, safety and remote learning. These researches and projected activities involving knowledge and service dissemination have multifaceted significance for Slovenia: a. Stable social-economic and cultural development Measured on a worldwide scale, products and services in the field of Telematics are considered to be a market niche with exponential growth. Many Slovene companies build their strategy based on the products or services of Telematics. Their core features are high technology, high added value and fast development. To keep up with these trends, intensive research and continuous development of quality graduate and post-graduate studies are necessary, especially in the science disciplines of Telematics. Also, cultural development benefits from Telematics. New FW – 26 Faculty of Electrical Engineering and Computer Science possibilities, from digital to interactive radio and television diffusion, or any multimedia services in general are offered to a wider population, enabling them top cultural services. b. Technological development The development of Telematics and its services is based on knowledge and high technological usage. The most important for Slovenia is to keep up with the pace in the world, which is possible with a close relationship in terms of research between industry and academia. With such research work, we can stimulate the development of wireless communication devices, systems for extraction, transmission, processing and the dissemination of the information. All these devices, knowledge and algorithms directly and indirectly affect the technological development of the country. c. Strengthening national identity and preserving natural and cultural heritage Managing Telematics in today's world divides nations into those which will preserve and develop their identity and their natural and cultural heritage from those which will more or less be melted into developed societies. Knowledge in general, which is the fundamental component of the products and services of Telematics, is environmentally friendly; it disseminates knowledge and culture, and raises the quality of life. With the projected establishment of virtual laboratories, digital library and remote sensing centre, Telematics will have a direct positive impact on the national entity and its culture. Abroad Telematics is a fast developing science area. Some indices are, for example, recent standardization efforts, like MPEG 4, MPEG 7 and MPEG 21 in the multimedia field, UMTS, WI-FI, DVB-H in the telecommunication field (of our interest), information systems establishment, and research of information mining are all in the fast growing phase. The same is in the field of remote sensing, mobile remote monitoring of surroundings and persons with special needs, electronic payment as the basis of e-commerce. In all these areas we are in close connection with the world's leading research institutions like FLR/DFD, partners in EU programs such as Socrates and Leonardo. Through publishing in leading journals in JCR bases, attending international workshops and conferences with active participation in their organization, and with many bilateral projects we contribute to the treasury of world knowledge.

2. Control of electromechanical systems Programme unit head: Prof. Dr. Drago Dolinar This programme unit consists of the staff of the Electromechanical Systems Control Laboratory and Power Engineering Laboratory. Scientific disciplines: Automation, Electrical Engineering, Electromagnetism, Mathematical and General Theoretical Physics. The research programme ""Control of Electromechanical Systems"" consist of two parts. The first part deals with the modelling, analysis and control design of electromagnetic devices or systems (induction machine - IM, synchronous machine, reluctance machine, linear and rotating machines, servo drives and active magnetic bearings), while the second part discusses the design, Faculty of Electrical Engineering and Computer Science FW – 27 modelling, analysis and control of power systems. Both parts are combined into one unit by applied dynamical treatment, which represents the basis for control design in the broadest sense. Withing the framework of the first part, the research team has analyzed various approaches to the dynamic modelling of electromagnetic devices and complex technical systems (analytical models). New concept for IM torque control was developed based on its non-holonomic structure. Characteristic non-holonomic constraints derived for AM dictate rotating stator current vector and rotor flux linkage vector to reach and to maintain any feasible equilibrium point. To achieve maximal efficiency in the transient and in the steady-states, adjusted amplitude and frequency modulation of the stator current must additionally be assured. Required modulation was assured with the state controller derived from the Brockett’s controller proposed for a class of non- holonomic systems without drift. The proposed torque control assures high dynamic in torque response, asymptotic stability and maximal efficiency for all feasible operation conditions. The new part of the research was the analysis and modelling of a three-phase core type power transformer. Within the framework of the second part, the research team performed the dynamic modelling and analysis of power system elements and the power system as a whole. Again, the dynamic approach was used. Part of the project was related to the detection, location and classification of faults in the distribution networks. Several methods for fast and accurate estimation of loop parameters were derived. In contrast to methods that are based on signal approximation with a series of orthogonal base functions the proposed methods are much less sensitive with respect to DC component, higher-, sub- and inter-harmonics, as well as with respect to the measurement of noise in the voltage and current signals. Developed methods that are verified with simulations are based on deterministic and stochastic line models in differential and integral time discrete forms.

3. Mechatronics systems Programme unit head: Prof. Dr. Karel Jezernik This programme unit consists of the staff of the Industrial Robotics Laboratory, Power Electronics Laboratory, Electro-Optics and Sensor Systems Laboratory, Measurements Laboratory and Process Automation Laboratory. Scientific disciplines: Automation, Intelligent Systems, Motors and Propulsion Systems, Robotics, Systems. Development of mechatronics systems presents a guarantee for development, technological progress and thus on overall society progress in both, developed and underdeveloped countries. All over the world enormous effort is being made in the fields of controlled drives, electronic voltage inverters, embedded systems, and telerobotic applications connected with virtual environments for the technological solutions' demands from macro- to nano- world. Likewise the advance in the field of the optical MEMS sensors and measurement instrumentation interferes with the most topical and promising fields of science, like nano-, optical and sensor technologies and their combinations, and takes care of the transfer of these technologies into practical use. Mechatronic systems present one of the most important export group of articles for Slovenia (Domel, Iskra Rotomatika, Kolektor, Motoman Robotec, Iskra Avtoelektrika, IPS Ljubljana,…). FW – 28 Faculty of Electrical Engineering and Computer Science

However, most of these products are on a low technological level, which is reflected in the low added-value. Thus over the next years they have to be upgraded or replaced with more advanced ones. In order to be able to reach a higher living standard, technological direction of our industry will have to change, where results of project team's research will play an important part. Project assures to our companies the access to knowledge and tools, required for their progress. Thus it influences their technological advance and enables growth in the number of innovations, which results in the growing added value of products. The project team contributes to a growing level of knowledge in the areas it covers. The use of mechatronic approaches presents an important stimulation in the growth of number of innovations and occurrence of many new products, which can present novelties also in the global market. Thus Slovenia receives the chance to take place among the most advanced countries of the world in a relatively short time. Research in the fields of controlled drives, electronic voltage inverters and embedded systems presents an important contribution to the improved competitive position of our companies. The improved quality of control also means the reduced use of energy, which results in the reduced pollution of the environment and thus the preservation of natural and cultural heritage. Electromechanical drives belong among the most important consumers of energy and already a small improvement in their efficiency results and notable reduction in energy consumption on the national scale. Rapid and efficient response to the changing demands of the markets can be assured with the introduction of advanced production procedures like "product on demand" and "custom product". This can only be achieved with flexible and reconfigurable production, which enables simple and cheap changing of existing, and the introdution of new products. Contemporary automatization approaches have to combine the adaptability of low-series production technologies with the efficiency of the high-series production lines, which cannot be imagined without the use of mechatronic systems. Advanced methods of process control, based on the principles of statistical data analysis, process information systems applying intelligent agents, methods of artificial intelligence, pattern recognition approaches, theories of neural networks and fuzzy sets, with the implementation of new methods for the control of processes in the shape of embedded control systems, are of prime importance for the development of high-technological products. Some of the currently most topical fields of advanced technologies have been brought to Slovenia, like optic fibres, nanotechnologies, optical MEMS, optical sensoric technologies, photon components, and devices. Additionally, state-of-the-art solutions for the connections of such devices for recognition and diagnostics of failures in control and supervision systems are introduced. The significance of our research programme in the field of teleoperation and use of its results can be observed in the example of the virtual laboratory for performing pedagogical processes at the University of Maribor, Faculty of Electrical Engineering and Computer Science, as well as in the development of the virtual factory, which will provide assistance to designers in control and Faculty of Electrical Engineering and Computer Science FW – 29 supervision design for the completely automatized plant or in the starting phase only isles of automatized systems. Observed form the viewpoint of the technological progress of Slovenia, research in the field of mechatronic systems is of vital interest, as the development of state-of-the-art products cannot be imagined without them. In order to assure their proper introduction into industrial practice it is essential to support high quality centres of research, which have to serve as the support for the industry. Mechatronics and robotics are topical scientific and industrial activities of the most developed states worldwide. With the use of information and communication technologies they present a prime contribution to the development of new mechatronic products, an improved competitive position for national economies, and also to the reduction of energy consumption. All of the research topics of our programme group are of exceptional importance for the global progress of science, which can be shown by the great number of publications in relevant international literature. Studies into the possibilities of modified modulation techniques, where the modulation signals are deliberately contaminated with noise, with microcomputer units and inverters of all kinds present a global contribution to this progress. Microcomputers are currently not applied in the DC-DC converters at the local level. Complicated control algorithms, where we have to deal with nonlinear objects of control, are executed in special integrated circuits. Their replacement with the standardized microcomputer units will accelerate progress in this field. Research in the field of control drives presents one of the most important research topics in the whole technical domain. The importance of this topic is further increased due to the global trend of replacing hydraulic and pneumatic actuators with electromagnetic ones, which are not only easier to control, but also cheaper and consume less energy. Improved quality and reliability of electromechanical actuators’ control also presents progress in many areas where they are used as drives. Better control (constant torque, less vibrations, improved dynamics, …) enables the production of improved systems. In the field of ac drives’ control without the use of speed and position sensors, currently research in the very low speed and field weakening operations represents the most important topic. The importance of this area is represented by the large number of research groups in the best universities and institutes worldwide, dealing with problematics. Over the last decade, the systems of automation, control and supervision, based in PC architecture, became state-of-the-art, especially in the field of SCADA systems. On the other side closed and hardware based solutions are still dominating the field of CNC systems, although the open solutions using the PC are emerging. The prime interest of research into these technologies is the introduction of open standards for embedded and specialized systems of distributed hardware and software. This is due to the fact that they enable upgrading, extending and interoperability. Additionally open architecture shortens the design cycles, increases productivity, and reduces times of production interruptions and cost of maintenance. Teleoperating and especially its branch telerobotics is a new and rapidly developing interdisciplinary domain of robotics, remote control, virtual reality, and human-machine FW – 30 Faculty of Electrical Engineering and Computer Science communications. Many important laboratories worldwide make a lot of effort in the development of experimental teleoperation using intelligent virtual interface, especially for applications in macro (telerobotics hand for the execution of remote medical operations), micro (robots for moving objects, smaller than 1 mm), and nano (robots for cutting of molecules) worlds. Research in the field of teleoperation is focused the execution of a remote-control robotic arm and mobile robot, where unpredictable delays of data transfer through the Internet have to be taken into account, which is a current topic of research worldwide. The programme in the field of optical MEMS sensors and measurement instrumentation is reaching into the most important and interesting areas of science, such as nano, optical and sensoric technologies, together with their combinations, transfer technologies into practical use. It is expected, that some of the results will contribute to the development of technologies, which will enable new approaches to dealing with several problems.

4. Advanced methods of interaction in telecommunication Programme unit head: Prof. Dr. Zdravko Kačič This programme unit consists of the staff of the Microcomputer Systems Laboratory, Digital Signal Processing Laboratory, Electronic Systems Laboratory and Digital and Information Systems Laboratory. Scientific disciplines: Signal Processing, Telecommunication Engineering. In 2005 research work was carried out in two main research areas. The first one encompassed advanced multimodal communications, where the following developments were carried out: robust speech processing techniques for various target applications, acoustic modelling techniques, search algorithms for continuous speech recognition and image processing algorithms for multimodal interfaces that include speech, gesture and visual communication. One of the goals of the research in the area of system-correctness assurance was the development of new methods for formal or semiformal specification and verification of contemporary reactive systems. In the field of robust speech processing a new voice activity detection algorithm (VAD) for distributed speech recognition systems was developed. The algorithm uses mel-filter banks and represents a time and space efficient solution when used in speech recognition systems. In the field of acoustic modelling, a new algorithm for automatic generation of phoneme classes was defined. The algorithm is used for initialisation of decision trees during the process of tying the acoustic models, which are used in automatic speech recognition systems. The algorithm is based on phoneme confusion matrix. It can be used in monolingual as well as in multilingual speech recognition systems. In the latter case it is especially important that no linguistic knowledge from experts is needed for languages included into a multilingual speech recognition system during the phase of initialization of multilingual decision trees. The new approach improves multilingual speech recognition accuracy. In the field of large vocabulary continuous speech recognition, a new architecture of automatic speech recognition system based on finite state machines was developed. With optimization algorithms the automaton are transformed into the recognition trellis on which the standard Viterbi algorithm is used. The advantage of automaton in comparison with Faculty of Electrical Engineering and Computer Science FW – 31 the standard recognition techniques is in the reduction of redundant information which brings improvements in search speed for a factor of ten and more. Using the developed an ASR system with additional integration of relevant information considering characteristics of inflectional languages, we will come closer to the final goal of large vocabulary continuous speech recognition for Slovenian language working in real environments. In the field of image processing a computational efficient parametric digital filter was developed, which enables real-time filtering of skin coloured objects in input image. One of the goals of the research in the area of system-correctness assurance was the development of new methods for formal or semiformal specification and verification of contemporary reactive systems. In 2005, our tool for the generation of models in the Promela language from system specifications written in the SDL language was supplemented with a new model of discrete time for more efficient verification, with a capability of modelling rational numbers, with a capability of including external C-code into the model, and with algorithms for searching and inclusion of missing SDL definitions for the case of the Promela model is being generated only for a part of an SDL specification. With this tool and additional manipulation, a Promela model of a part of the SDL specification of a real-size industrial system was generated, which represents an input to the Spin verification tool. The research on the ACTLW logic developed by this research group was carried on. The existence of linear witnesses and counterexamples, as well as the notion of practical witnesses and counterexamples for ACTLW were thoroughly investigated, and the diagnostics for its formulae was developed. The expressiveness of ACTLW was investigated. Methods for translation between the CTL, ACTL, and ACTLW formulae were developed. Patterns of the CTL, ACTL, and ACTLW formulae for the specification of frequently verified system properties were developed for easier practical use of logics. A generally applicable method based on the Temporal Logic of Actions (TLA) for checking communication capabilities of processes in mobile communication systems with unreliable connections was proposed. It the system is finite-state, the checking can be carried out automatically with the TLC model checker for TLA+.

5. Information systems Programme unit head: Prof. Dr. Ivan Rozman This programme unit consists of the staff of the Information Systems Laboratory, Database Technologies Laboratory, Computer Mediated Communication Laboratory and Real-Time Systems Laboratory. Scientific disciplines: Business Process Reengineering, Communication Methods, Computer Science, Databases, Development Methodologies, E-business, Informatics, Information System Development, Intelligent Systems, Operations Research, Quality Assurance Systems, Real-Time Systems. The group's scientific and research work is orientated towards holistic development of information systems (IS). It addresses several inter-connected areas: methodological aspects of IS, databases and data warehouses development; quality assurance strategies; information technology support FW – 32 Faculty of Electrical Engineering and Computer Science for inter-organisational business operations; design and construction of embedded systems; reliability assurance and security of embedded systems; evaluation and improvement of process and architecture models; IS integration methods; use of intelligent systems, agents and automatic programming techniques for the IS reliability improvement; security aspects of IS development; data and databases security; efficiency of classification algorithms for the construction of data warehouses and integration initiation for information quality improvement. Methodological aspects of IS development address the development and definition of new, more effective techniques, methods and methodologies of business process modelling, requirements analysis, architecture design, implementation, verification and validation of IS. The emphasis is on the object- and component-oriented approach, and on the services-based architecture with the semantic component and context- and aspect-dependent behaviour. One of the key issue is assurance of information services integration, which addresses also the next key issue of efficiency improvement: re-use, for which the formalization on the higher level of abstraction (ideas, patterns, frameworks, components and heuristics) is done by introducing various repositories, location, identification and application solution mechanisms. Methodological research offers a sound base for the methods and mechanisms definitions to support the information technology in inter-organisational business operations, primarily between businesses, but also for customers and employees. The main goal is the construction of inter- organisational integration based on the existing standards of web services and the enhancement of web services by semantic component. The final goal is automatisation of all levels: definition of business processes, definition of cooperation profiles, electronic contracts definition and business operations execution. Attention is focused on the standards of the European Union, primarily SEEM (Single European Electronic Market) and on the definition of application methods in Slovenia. The security aspects orient towards quality assurance of IS development and assurance of data quality. The research group traditionally dedicate much attention to quality and continues with research on the definition of new approaches to introduce quality systems into the informatics sphere of activity and on the definition of formal methods for program process modelling. In this manner, research continues on the quantitative evaluation of program processes and data quality. Furthermore, the development of distributed services architecture is focused on which are independent of platform and/or transformation mechanisms; in this context the model based architectures definition possibilities are addressed, that solve the problem of heterogeneous application platforms and their fast development. In the scope of IS data aspects research (databases, data warehouses and data mining) the preference is given to information production processes and their improvement with the consideration of structured data development and analysis procedure at the level of an organized system. In the scope of knowledge based systems research the focus continues on the development of models for effective project management support, definition and evaluation of methods based on fuzzy logic, intelligent agents, operations research and artificial intelligence. The development searches for sources in the semantic enhancement of services architectures and implementation of artificial intelligence methods. Faculty of Electrical Engineering and Computer Science FW – 33

6. Applied Electromagnetics Programme unit head: Prof. Dr. Mladen Trlep This programme unit consists of the staff of the Fundamentals and Theory of Electrotechnics Laboratory, Applied Electromagnetics Laboratory and Electrical Machines Laboratory. Scientific disciplines: Electrical Engineering, Electromagnetism. The research program “Applied Electromagnetics” in its broader sense comprises theoretical and practical research of electromagnetic phenomena inside material and outside it. More particularly, it is connected with problems of electromagnetic conversion in real conditions, which are reflected in technical, acoustical and voltage phenomena, and with researching of electromagnetic phenomena in insulating and grounding systems, as well as in biological tissues. Within the framework of the research program, parallel work is carried out on three fields, with the ultimate aim to incorporate all the knowledge in a complex system which will as accurately as possible cover all demands of a real electromagnetic problem. The three fields are: - research and development of mathematical models for defining magnetic, electrical, current and temperature field in stationary and dynamic conditions, - development of measurement methods for defining real characteristics of material, - development of models used by solving the inverse problems in electrotehnics. The first part focuses on numerical methods for electromagnetic field calculation, namely finite element method and boundary element method. The development and application of the above methods are directed to CAD program solutions on concrete objects. In most cases, these objects are electromechanic converters, actuators, switches, insulating and grounding systems, etc. In technological fields we develop optimization methods with all necessary attributes. The development of measurement methods focuses on measurement methods for the accurate defining of real characteristics of materials and losses in them, which is necessary for a more realistic mathematical model of electromagnetic system. The work is carried out on methods for defining magnetization and hysteresis curves, on determination of pulsating and rotational losses in magnetic materials, on software development for support of measurement methods and on the production of measurement yokes for different shapes of measurement samples. By solving the inverse problem we have decided on a special variant of boundary element method, the so-called DRM method, which enables a simple dealing with the domain, which we want to determine by the inverse problem. Our initial work has been directed to problems of 2D static fields, where we detect unknown distribution of electromagnetic field sources, or rather, unknown material property. Both problems are very actual in bioelectromedicine, by searching defects in material structure, by development of measurement methods, etc.

7. Computer systems, methodologies and intelligent services Programme unit head: Prof. Dr. Damjan Zazula FW – 34 Faculty of Electrical Engineering and Computer Science

This programme unit consists of the staff of the Computer Architecture and Languages Laboratory, System Software Laboratory, Heterogeneous Computer Systems Laboratory, Geometric Modelling and Multimedia Algorithms Laboratory and Computer Graphics and Artificial Intelligence Laboratory. Scientific disciplines: Artificial Intelligence, Bioinformatics, Biomathematics, Computer Graphics, Computer Science, Computer-Assisted Education, Distributed Computing, Geometrical Modelling, Image Processing, Intelligent Systems, Internet Programming and Web Services, Medical Informatics, Multimedia, Programming Languages and Computer Architectures, Signal Processing, System Information Theory, Systems Engineering, Systems Engineering and Computer Technology. 1. Intelligent web services The group for intelligent web services has been supported by the programme founded in 2004. Over the last year, we have upgraded intermediate integration layer, i.e. backbone, and all the existing intelligent web services. Several new intelligent services were developed and integrated into the current system of web services. Among them, a tool for the machine learning of intelligent web services is of paramount importance. It provides intelligent web services with an option to track the users’ requests, identify most frequently selected running modes and parameters, and evaluate users’ responses. Collected data is then used to extract various learning patterns and to automatically adjust the values of the most frequently selected parameters and/or running modes. 2. Scientific research In the field of programming language theory, we continued with the study of grammar induction and domain-specific languages. Employing evolutionary computing and various heuristics, we upgraded two algorithms for induction on context-free grammars. These algorithms were then applied to different computer engineering problems, in particular to the domain-specific meta modelling and to the design of programming languages. We studied syntactic patterns in different development stages of domain-specific languages and prepared a variety of implementation recommendations. Finally, heuristic algorithms for grammar induction were implemented as an intelligent web services and integrated into the existing system of web services. In the field of surface flattening, we developed and evaluated two different algorithms for elimination of flat pattern overlapping in the case of elastic plane materials. We studied the algorithms for tree modelling and applied them to the problem of overgrown forest area simulation. In particular, a biological model utilizing Ellenberg’s ecological factors was developed, along with the algorithms for geometric modelling of trees and algorithms for the modelling of trees with hyperstructures. Our research work also dealt with the problem of cloud volume modelling. In the field of signal and image processing our research was focused on four main themes: improvement of our CKC method for blind decomposition of complex non-orthogonal signals, introduction of 2D CKC method for dense disparity estimation and improved tracking of human body with stereocamera, development of procedures for analysis of 3D ultrasound recordings and automated detection of changes in tissue growth, as well as the analysis of contour-based algorithms and their use in the segmentation of 2D magnetic resonance images. Faculty of Electrical Engineering and Computer Science FW – 35

In the field of geometric data compression the main focus was on voxel data, usually obtained as a sequence of 2D images from CT or MRI devices. A new method for progressive compression of voxel data was developed. It results in better compression ratio and very low memory requirements, making it suitable for visualization over narrow communication channels. The research in alternative data structures for efficient triangulation in a plane was also continued. Several approaches were implemented, such as deterministic skip lists, (a, b)-trees and red-black trees. Experiments proved that best results were obtained by the latter. The development of a web portal that links contents with services was also continued. Ranking of search engine hits was improved by using contents lemmatisation. An intelligent integration service that links services regarding the user requirements and the current situation was built. The portal infrastructure is currently used in the development of distant education support and for building the digital library of the Ministry of Defence of the Republic of Slovenia. New e-services for local community support were also introduced.

Institute of Automation AU - 1

INSTITUTE OF AUTOMATION

Head: Prof. Dr. Karel Jezernik Phone: +386 2 220 73 00 E-mail: [email protected] URL: http://www.au.feri.uni-mb.si/index.html-l2

The Institute of Automation participates in basic and applied research in the fields of electrical and high-precision measurement of electrical and non electrical quantities, measurement automation, signal processing, and remote control, sensor systems, systems theory and control, modelling, identification, computer control of processes, system design in automation, software in automation, expert systems in automation, fuzzy control systems, human-machine communication, electro-optic systems, programmable logic control systems, and real time control systems.

The Institute of Automation co-operates with many institutes abroad: Technische Universität Graz - Austria, Technische Universität Wien - Austria, Politehnikais Instituts Latvijas, Riga - Latvia, Fachhochschule München, Technische Univerersität München - Germany, Deutsche Forschungsanstalt für Luft- und Raumfahrt Oberpfaffenhofen - Germany, Ecole Polytechnique Féminine, Sceaux, Paris - France, Guangxi University of China, Nanning - China, Elektrotehnički fakultet, Zagreb - Croatia, Tehniška univerza, Bratislava - Slovak Republic, University of Sarajevo - Bosnia and Herzegovina, Faculty of Electrical Engineering in Pragua and Brno - Czech Republic.

The members of the Institute of Automation belong to five laboratories, which also includes one centre of technology. AU - 2 Institute of Automation

Institute of Automation Head: Prof. Dr. Karel Jezernik

Systems Control Signal Processing and Laboratory Remote Control Laboratory Head: Assoc. Prof. Dr. Rajko Svečko Head: Prof. Dr. Žarko Čučej

Process Measurements Automation Laboratory Laboratory Acting Head: Head: Assoc. Prof. Dr. Vojko Matko Assoc. Prof. Dr. Boris Tovornik

Electro-Optics and Sensor Systems Laboratory Head: Assoc. Prof. Dr. Denis Đonlagić

Institute of Automation AU - 3

Systems Control Laboratory

Head: Assoc. Prof. Dr. Rajko Svečko

Employees: Asst. Prof. Dr. Matjaž Debevc; Andrej Knuplež; Sarjaš Andrej

Signal Processing and Remote Control Laboratory

Head: Prof. Dr. Žarko Čučej

Employees: Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Tomaž Romih, MSc; Linec Matjaž; Karl Benkič

Process Automation Laboratory

Head: Assoc. Prof. Dr. Boris Tovornik

Employees: Asst. Prof. Dr. Nenad Muškinja; Asst. Prof. Dr. Marjan Golob; Božidar Bratina; Alojz Hojnik

Part-time employed: Aleksander Polutnik, MSc

Measurements Laboratory

Acting Head: Assoc. Prof. Dr. Vojko Matko

Employees: Asst. Prof. Dr. Bojan Gergič; Ladislav Mikola, MSc; Darko Hercog; Stanislav Lampič; Miloš Vute

Electro-Optics and Sensor Systems Laboratory

Head: Assoc. Prof. Dr. Denis Đonlagić

Employees: Dr. Edvard Cibula,MSc; Marko Kežmah AU - 4 Systems and Control Laboratory

SYSTEMS AND CONTROL LABORATORY

Head: Assoc. Prof. Dr. Rajko Svečko Phone: +386 2 220 71 40 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

MCT Moderna teorija vodenja (Modern Control Theory) Leader: Assoc. Prof. Dr. Rajko Svečko (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Amor Chowdhury, Martin Pec, Andrej Knuplež Financed by: Faculty of Electrical Engineering and Computer Science, Ministry of Science and Technology of the Republic of Slovenia

Controller design problems were originally formulated in the frequency domain. The main tools used during the early phases of research into this class of problems have been operator and approximation theory, spectral factorization, and (Youla) parametrization, leading initially to rather complicated (high-dimensional) optimal or sub-optimal (under the H-infinity norm) controllers. Riccati equations of the type that arise in linear-quadratic differential games play a key role. These findings have prompted further accelerated research on the topic, for more direct time-domain (state-space) derivation of these results. Among different time-domain approaches to this class of worst-case design problems, the one that uses the framework of dynamic (differential) game theory seems to be the most natural. This is because the original H_inf -optimal control problem (in its equivalent time-domain formulation) is in fact a minimax optimization problem, and is, therefore, a zero-sum game, where the controller can be viewed as the minimizing player and disturbance as the maximizing player. Using this framework, our research focuses on a complete theory that encompasses continuous-time as well as discrete-time systems, finite as well as infinite horizons, and several different measurement Systems and Control Laboratory AU - 5

schemes. We also discuss extensions of linear theory to nonlinear systems, and derivation of lower-dimensional controllers for systems with regularly and singularly perturbed dynamics. Currently we are engaged with several problems such as:·1. Development of a robust controller synthesis method for systems where the performance demand is asymptotic tracking to the sinus reference signal.·2. Order minimization of synthesis weight functions.·3. Study of the connection between pole placement and the H_inf synthesis.

International projects

SI 2003/7175103-03- PHARE 2003 - ROMB 02-009 Leader: Dejan Dinevski (University of Maribor) Participants: Assoc. Prof. Dr. Matjaž Debevc Financed by: The Centre for interdisciplinary and multidisciplinary research and studies

The objective of the project is planning a successful vocational career and improvement of the employability rate of unemployed persons by increasing their capacity for mastering basic computer skills. The goal groups are young unemployed persons older than 25 years whose chances of employment would improve with the acquisition of basic and key ICT knowledge. Indirect beneficiaries are considered to be heads of vocational training and information mediators, as well. Principal activities of the project are: a) identification of the goal groups, preparation of motivation programmes, realization of motivational activities, examination of the existent knowledge, creation of study groups, and preparation of the training concept according to study groups, b) assurance of the e-learning information system and the required e-learning materials. The preparation and realization of training programmes for heads of vocational training and information mediators. The realization of the goal groups’ training in combination with classroom teaching, as well as via Internet (blended learning), c) evaluation of the realized training and knowledge examination, i.e. certifying the participants with publicly valid documents, d) ensuring the service of basic computer knowledge training after the project is completed.

INTERREG III INNOVIN Leader: Tomaž Puh (University of Maribor) Participants: Assoc. Prof. Dr. Matjaž Debevc The INNOVIN project aims towards the improvement and growth of the level of AU - 6 Systems and Control Laboratory

entrepreneurial culture, and the improvement of expert knowledge in the field of business in the academical environment, as well as towards increasing the number of spin-off and innovative enterprises in the cross-border region. It binds the following cities: Graz, Villach, and Maribor as important economic centres and headquarters of university institutions. Within the framework of the project, the establishing and improving the working of spin-off and innovative enterprises in the cross-border region are stimulated with the help of events, services, and promotion of business in the academic environment, as well as with cooperation with local supporting institutions. Besides this, the project includes the development and making of interactive applications for education, mentoring, market-specific information for the needs of the spin-off enterprises. It also attends to building a cross-border network and data base for the needs of the future founders of the spin-off enterprises, which are going to be formed by the university incubators and partners in the fields of science, economy, and politics. The goal group are future founders of enterprises from the academic environment and innovative enterprises from the cross-border region of north-eastern Slovenia, Austrian Koroška, and Štajerska (Kärnten, Steiermark). The goal group also consist of young incubated enterprises, stemming from the university incubators, Science Park Graz, and the Tovarna podjemov (IRP), as well as all the potential founders of the spin-off enterprises from the academic environment (academic institutions, university professors, scientific co- operators, students), and other innovative enterprises from the cross-border region. The indirect goal groups are the supporting institutions (technological centres, advisory organizations, regional development agencies, chambers of commerce and industry) in the cross-border region and in the EU which can effectively use the contents of the web applications and the results of the project.

PHARE 2003 - DISNET – E-learning network for the unemployed persons with DISNET special needs Leader: Andragoški zavod Maribor-Ljudska univerza, Melita Cimerman Participants: Assoc. Prof. Dr. Matjaž Debevc, Assoc. Prof. Dr. Rajko Svečko, Assoc. Prof. Dr. Žarko Čučej, Andrej Sarjaš Financed by: Ministry of Labour, Family and Social Affairs

The objective of the project is establishing an e-learning network for unemployed persons with special needs (deaf and hard of hearing, blind and weak-sighted) in Slovenia and establishing a Special Interest Group on Education, which is going to have an informative, presentational, and educational role. It is going to educate and train people with special needs for efficient inclusion into the working environment which demands computer skills. The basic ICT training is going to end by the acquisition of ECDL certificates. Educational institutions for people with special needs will thus enrich their offer with performing of e- learning supported by tutors. Other objectives of the project are educating teachers for the ICT work and presenting opportunities for e-learning offers to the people with special needs. Systems and Control Laboratory AU - 7

After the project's completion, the institutions will acquire the status of the Support Centres with the possibility of distant learning with the aid of tutors and all the necessary equipment for preparing and designing instructional materials.

Start web page for distance learning on computer technology education for deaf and hard of hearing people.

E-VINTER Phare 2003 - Creating an innovative learning environment, e- skill, and competence development, supporting the informal- lifelong-learning-form enforcement Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Borka Jerman Blažič (Institut "Jozef Stefan") Participants: Jože Korelič; Janez Pogorelc, MSc; Asst. Prof. Dr. Suzana Uran; Živa Hohnjec; Jernej Otič; Assoc. Prof. Dr. Matjaž Debevc Project partners: Inštitut Jožef Stefan, Faculty of Electrical Engineering and Computer Science, SETCCE, Center RS za poklicno izobraževanje Financed by: Ministry of Education and Sport

In accordance with the PHARE 2003 ’’Lifelong learning’’ priority areas and guidelines, as well AU - 8 Systems and Control Laboratory

as with the national and European policy on the meaning and evaluation of informal learning, the E-VINTER project ensures the shift from standard learning forms and classical classrooms towards the creation of innovative and stimulative learning environment for the acquisition of knowledge, especially e-skills and e-competences, which support personal and professional growth. The E-VINTER project has met its objectives with three concrete working packages: · Establishment of an Expert Centre for Evaluation, Standardization, and Counselling for the purposes of selecting optimal e-tools for the establishment of e-learning environments, · Development of e-skills and competences in the framework of the preparations for the national vocational training qualification, and · A pilot implementation of training through the established innovative learning environments in the designated regions: the Drava Region, the Mura Region, and Carinthia. The efficient implementation of the project is granted by the modern methods of knowledge transfer and quality partnership, which in accordance with the policy of harmonious regional development places the achievements of the research and development sphere into regional/ local environment.

IS/04/B/F/PP-164002 LEONARDO da VINCI, project: SOCIAL RETURN Leader: Felags, Iceland. Participants: Assoc. Prof. Matjaž Debevc, Assoc. Prof. Dr. Rajko Svečko Financed by: EU Leonardo da Vinci

The main goal of this innovative pilot-project called “Social Return” is to develop a holistic and multi-disciplined rehabilitation programme and to offer this to disabled individuals, with limited employment capability. The programme should preferably be carried out in the participant´s local or regional area. Pilots will be set up in Húsavík (a remote and sparsely populated area in N.E. Iceland), in South Limburg (a densely populated but partially rural region in The Netherlands), in Vilnius, the capital of Lithuania, in the Firenze region in Italy and in the region of Maribor in Slovenia. This project will straightforwardly enhance the implementation of equal opportunities for disadvantaged people, by applying a holistic, multi-disciplinary approach, customized to the needs of the individual in small scale settings at local levels. People will not be temporarily pulled away from their community and families, as is the case in many of the existing large rehabilitation centres. Systems and Control Laboratory AU - 9

29298-IC-1-2003-1- SOCRATES ERASMUS Project MARE – Joint European Master AT-ERASMUS- Degree Program »Remote Engineering« PROGUC-1 Leader: Michael Auer (Carinthia Tech Institute) Participants: Assoc. Prof. Dr. Riko Šafarič, Assoc. Prof. Dr. Matjaž Debevc, Assoc. Prof. Dr. Rajko Svečko, Andrej Knuplež, Financed by: European Union

The main task of the project MARE is to elaborate a complete new joint curriculum in the field of »Remote Engineering«. The program is planned as a joint master's degree program. The use of virtual and remote laboratories and workplaces is one of the future directions for advanced teleworking / e-working environments especially in engineering and science but also in all other fields of society. This would also provide a benefit for people with special needs and people working from their home. All over the world there is a lack of specialist in this field and the number of needed specialist will increase dramatically in the next years. The general objective of the curriculum is to mediate fundamentals, applications and experiences in the field of remote engineering by an interdisciplinary approach in combination with »learning by doing« phases. In this way we create in Europe a unique possibility to study »Remote Engineering«. Technology enhanced learning in a dual mode will be the central didactic approach. The study program is open for students from all over and outside Europe and requires a bachelor degree in engineering or in science of informatics. Graduates will be able to work in remote working environments and to develop such environments. This project represents an important contribution to the information Society Policies (Lisbon Agenda) and the eEurope Action.

2611-04-0312104 EQUAL project: EQUAL STUDY Leader: Jana Macarol (Univerza v Ljubljani, Ekonomska fakulteta) Participants: Assoc. Prof. Dr. Matjaž Debevc Equal study partnership has three main goals: a) Goal – to establish better conditions in education for disabled and through those better conditions for entering the labour market AU - 10 Systems and Control Laboratory

b) Goal – to raise the educational level of a young disabled population c) Goal – to lower the level of unemployment in the disabled population. Between measures for the reduction of structural disparity in the field of unemployment the National programme for development of labour market also quotes the establishment of quality education for disabled students, which will lead to reduction of school dropouts from university programmes. Social integration of marginal groups into educational processes and the labour market is also very important. We intend to reach this goal through the establishment of adjusted study conditions and the establishment of assistance departments for students with special needs. In this contest we shall develop multimedia support for lectures, mentoring network, career and study counselling, SOS telephone and a draft of (international) employment network. Those solutions would enable better conditions in education for disabled and consequently better conditions for entering the labour market for all that have problems entering and re-entering the labour market.

Completed research projects 2005

International project

4908701.01.01.0005 FOCUS-SIAT: Fostering cross border e-business cooperative environment through usage of advanced networked e-learning and e-business services Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Participants: Assoc. Prof. Dr. Matjaž Debevc (Faculty of Electrical Engineering and Computer Science)Jernej Otič; Janez Pogorelc, MSc; Asst. Prof. Dr. Martin Terbuc; Assoc. Prof. Dr. Riko Šafarič Financed by: National Agency for Regional Develpoment of the Republic of Slovenia

Duration: Feb. 2004 to Apr. 2005

The general objective of the project FOCUS-SIAT is to increase the management proficiency levels in medium and small size enterprises, local authorities and other beneficiary bodies from CBC Interreg. IIIA program through improvement of knowledge and skills of employees and unemployed people in the region by preparing them for e-business, for changes of the ways of working and thinking, or in other words to make them capable of understanding how the knowledge economy infrastructure works and how it can be used in the everyday working environment. This will be provided through special designed training and specially designed Systems and Control Laboratory AU - 11

ICT tools. FOCUS-SIAT will select 3 target groups from both sides of the border (one in Austria, one in Slovenia and one mixed) to receive the planned training. Each target group that will receive ICT based training by use of EducaNext portal and with help of responsible tutors will consist of at least 15 – 30 trainees or more. Other type of training will be provided through workshops. The training provided through workshop(s) by use of video-conferencing facilities in the partners sites and information day(s) will have much bigger number of attendees as these type of training will be open.

PUBLICATIONS

Tanja Arh, Matjaž Debevc, Tanja Kocjan-Stjepanovič, Borka Jerman-Blažič, “Testiranje uporabniške prijaznosti na primeru izobraževalnega portala EducaNext,” Organizacija (Kranj), Vol. 38, No. 4, pp. 183-189, 2005.

Klavdija Ambrožič, Matjaž Debevc, Nicole Kuplenik, Živa Peljhan, Petra Rezar, “Navodila za izobraževanje gluhih in naglušnih učencev s pomočjo informacijske in komunikacijske tehnologije,” Cogito (Ljubl.), No. 10, pp. 72-80, Dec. 2005.

Petra Rezar, Matjaž Debevc, “Gluhi in naglušni v Sloveniji,” Cogito (Ljubl.), No. 10, pp. 18-23, Dec. 2005.

Matjaž Debevc, “Analiza izobraževanja na daljavo za osebe s posebnimi potrebami s pomočjo pretočnega videa,” Vzgoja in izobraževanje v informacijski družbi: zbornik konference, 8. mednarodna multi-konferenca Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005.

Matjaž Debevc, Bogdan Dugonik, Beth Meyer, Živa Peljhan, “Usability study of web-based video lecturing for people with special needs,” HCI International 2005, Las Vegas, USA, 2005.

Peter Mrak, Andrej Knuplež, Rajko Svečko, “Vodenje procesa reguliranega s PLC na daljavo,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 231-234.

Andrej Sarjaš, Rajko Svečko, Amor Chowdhury, Nenad Muškinja, “Regulacija ravnovesja valjčka na letvi v prostoru stanj,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 43-46.

Zoran Stjepanović, Matjaž Debevc, Tanja Kocjan-Stjepanovič, “Developing effective educational tools for deaf and hard of hearing people,” Proceedings of the WSEAS International Conferences, Tenerife, Canary Islands, Dec. 2005, pp. 175-181. AU - 12 Systems and Control Laboratory

Marina Svečko, Simon Puklavec, Rajko Svečko, “Look and check,” e-Society 2005: proceedings of the IADIS international conference, Qawra, Malta, Jun. 2005, pp. 508-512.

Matjaž Debevc, “Poučevanje in učenje s sodobnimi tehnologijami za osebe s posebnimi potrebami (gluhi in naglušni): INVATECH projekt,” 10. mednarodna konferenca - MIRK'05, Osnovna šola Cirila Kosmača, Piran, Slovenia, May 2005.

Zdenko Mezgec, Martin Pec, Rajko Svečko, Amor Chowdhury, “Prenos podatkov po govornem kanalu GSM sistema,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 121-124.

Samra Mujačić, Matjaž Debevc, “Design, implementation and utilization of the productive videoconference room,” ICAT symposium: zbornik radova: proceedings, ICAT 2005, Sarajevo, Bosnia and Herzegovina, Oct. 2005, pp. 91-96.

Rajko Svečko, Diskretni regulacijski sistemi, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

Matjaž Debevc, Tanja Kocjan-Stjepanovič, Uvod v oblikovanje interakcije človek-računalnik, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

Rajko Svečko, Teorija sistemov, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

Metka Zorič-Venuti, Matjaž Debevc, Načrtovanje in priprava gradiv za e-izobraževanje, Maribor, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Matjaž Debevc: “Pedagoški i didaktični aspekti u transformaciji tradicionalnog sadržaja u elektronski oblik”, invited lecture in courses about eLearning, organised by WUS Austria (World university service - Austrian commitee), in the frame of eLearning "Fine Tuning" 2004/2005 programme, University of Banja Luca, Mostar, Sarajevo and Tuzla, Apr. 18-21, 2005.

Matjaž Debevc: “Usability study of web-based video lecturing for people with special needs”, invited lecture on the Rocky Mountain Chapter of the Human Factors and Ergonomics Society. This invited lecture was part of July chapter meeting, held at Auraria Higher Education Center in Denver, Colorado, USA, July 21, 2005. Systems and Control Laboratory AU - 13

Matjaž Debevc, Ferdinand Valenčak, Milan Perko: “Cable networks in Slovenia: organization, evolution and service level”, lecture on BroadBand Europe 2005, Bordeaux, France, Dec. 12- 14 2005.

GUESTS AND VISITORS

Marcelo Castro The lecture of IEEE student member Marcelo (INSTITUTION, Brasil, Brazil): Castro, electrical engineering student from State University of Sao Paulo, Brasil, visit, Oct. 24, 2005.

DECORATIONS, AWARDS, AND HONOURS

Assoc. Prof. Dr. Matjaž Debevc: award for innovations for the project Video lecturing on demand for deaf by University of Maribor, Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia, Dec. 8, 2005.

AU - 14 Signal Processing and Remote Control Laboratory

SIGNAL PROCESSING AND REMOTE CONTROL LABORATORY

Head: Prof. Dr. Žarko Čučej Phone: +386 2 220 71 20 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

CRP-M2-060 Znanje za varnost in mir: Slovenski center za daljinsko zazanavanje (Science for seccurity and peace: Slovenian Remote sensing Centre) Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Tomaž Romih, MSc; Prof. Dr. Žarko Čučej Project partners: Ministry of Defence Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, Ministry of Defence

The goal of the project is to create a basisc for a Slovenian remote sensing centre. The accent will be on SAR-data compression, analysis, storage and transmission. Signal Processing and Remote Control Laboratory AU - 15

International projects

CZ/04/B/F/PP- Elefants project: E-Learning for Acquiring New Types of Skills 168012 Leader: Boris Šimak (Czech Technical University in Prague, Faculty of Electrical Engineering), Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Dušan Gleich; Peter Hofman; Tluchorova Lenka; Jaromir Hrad; Tomas Zeman; Asst. Prof. Dr. Matjaž Debevc; Asst. Prof. Dr. Peter Planinšič; Tomaž Romih, MSc; Assoc. Prof. Dr. Rajko Svečko Financed by: European Union

It is Leonardo da Vinci Commmunity Vocational Traininig Programme project. The goal of the project is to make electronic-learning tools for electro-technical functional education.

SCM-C010A05-2005 NEWEBTOOLS: Initiation of the Blended Learning System - Tempus projekt Leader: Sofija Bogdanov (University of Ciril and Metod Skopje, Faculty of EE), Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Dušan Gleich; Dimitar Trajkovski; Asst. Prof. Dr. Peter Planinšič; Tomaž Romih, MSc; Asst. Prof. Dr. Matjaž Debevc Project partners: University of Ciril and Metod Skopje, Faculty of EE Financed by: European Union

The goal of the project is to improve the use of information-communication technologies at Macedonian universities. The e-tools for the education of signal processing were developed.

MPD-05-06 Monitoring physiological data by use of distributed inteligent sensors linked by wireless network Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Nebojša Zdravkovič (University of Kragujevac; Faculty of Technical Science Čačak) Participants: Dr. Dušan Gleich; Jeroslav Živanić; Siniša Ranđić; Tomaž Romih, MSc; Branka Jordović; Asst. Prof. Dr. Peter Planinšič; Radojka Krneta; Aleksander Peulić Project partners: University of Kragujevac; Faculty of Technical Science Čačak AU - 16 Signal Processing and Remote Control Laboratory

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, Ministry for Science of Serbia and Montenegro

The goal of the project is the studying and research of distributed sensors and wireless networks for monitoring physiological data. In the year 2005 the board with processor supporting Zig-Bee-wireless communication was tested and the transmission of data between board and remote PC was realized. Mag. Aleksander Peulić (PhD student) visited UM, FERI, Maribor in time 20.08.2005 to 20.09.2005. His visit was also supported by Tempus IGM scheme.

PSP No. 018/2005 Traffic scene analysis and supervision using artificial intelligence Leader: Asst. Prof. Dr. Peter Planinšič (Faculty of Electrical Engineering and Computer Science), Panagiotis Liatsis (City University, School of Engineering and Mathematical Sciences) Participants: Tomaž Romih, MSc; Prof. Dr. Žarko Čučej; Dr. Dušan Gleich; Asst. Prof. Dr. Franc Jurkovič Project partners: City University, School of Engineering and Mathematical Sciences Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, British Council

The aim of this project is to further develop a vehicle tracking system based on computer vision. The main aim of the proposed project is the provision of detailed traffic information obtained, i.e., extracted by traffic scene analysis in a variety of traffic scenarios (sparse, medium and congested traffic) using artificial intelligence (fuzzy logic, neural networks, genetic algorithms). In year 2005 the use of Hough transform was studied and used for detecting edges and pattern recognition. Also real environment conditions, as impact of environment lighting end defocusing on colour and pattern recognition were considered. Various algorithm, and new one for edge detecting were studied and developed and possible combination of them by using artificial intelligence. The remote wireless/internet controlled and autonomous small electrical vehicle using computer vision was developed and demonstrated at different science population events, especially for young people and potential student of Electrical and computer engineering (Winter Holiday School, Information days etc).Young students were involved in the project.

PIMTI-05-06 Information processing for multimedia and engineering data Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Signal Processing and Remote Control Laboratory AU - 17

Computer Science), Inge Gavat (Politechnica University oof Bucharest) Participants: Dr. Dušan Gleich; Asst. Prof. Dr. Peter Planinšič; Asst. Prof. Dr. Mitja Solar; Mihael Kaiser; Tomaž Romih, MSc; Jože Mohorko; Gregor Domanjko; Mada Constantin; Mihail Datcu Project partners: Politechnica University oof Bucharest, Romanian Space Agency, German Remote Sensing Data Center (DFD), German Aerospace Center (DLR) Oberpfaffenhofen Financed by: Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

Modern multimedia signal processing and data engineering is a multidisciplinary research- application area combining computer engineering, communication and production technologies. Many new basic principles and algorithms were investigated, developed and standarized in the past, especially in the domain of data/image/video coding/analysis and transmission. However, joint research on these disciplines is necessary to enable efficient implementation for various applications. Information retrieval from still and video signals using standard and modern methods was investigated and developed as well transmission of coded video signal over IP and quality evaluation.

PUBLICATIONS

Miro Milanovič, Dušan Gleich, “Buck converter digitally controlled by a fuzzy state-space controlled,” Journal of science and engineering. Series B, Applied sciences and engineering, Vol. 2, Iss. 5-6, pp. 638-654, 2005.

Boris Bizjak, Peter Planinšič, “Increasing power quality in systems with limited power sources,” 47th International symposium ELMAR-2005 focused on multimedia systems and applications, Zadar, Croatia, Jun. 2005, pp. 401-404.

Boris Bizjak, Peter Planinšič, “Software concept for power quality study,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 453-457.

Dušan Gleich, “Gauss-Markov model za kontekstno kvantizacijo slik SAR,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, 2005, Vol. B, pp. 203-206. AU - 18 Signal Processing and Remote Control Laboratory

Dušan Gleich, Mihai Datcu, “Context based quantization using Bayesian inference,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 459-462.

Jože Mohorko, Dušan Gleich, Peter Planinšič, “Advanced DSP based system for image transmission over GSM/GPRS networks,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 467- 471.

Aleksandar Peulić, Siniša Randjić, Žarko Čučej, “Wireless monitoring system of biomedical data: security issues,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 473-476.

Tomaž Romih, Matej Kseneman, “Application of the color segmentation using chromaticity diagram for vehicle marking table detection,” 47th International symposium ELMAR-2005 focused on multimedia systems and applications, Zadar, Croatia, Jun. 2005, pp. 61-64.

Tomaž Romih, Panos Liatsis, Žarko Čučej, Peter Planinšič, “Combining features from wavelet decomposition for vehicle detection,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 477- 481.

Boris Bizjak, Peter Planinšič, Jurij Bizjak, Jože Voršič, “Ugotavljanje in klasifikacija kakovosti električne energije s pomočjo mehke logike,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Jun. 2005, pp. 2-53 - 2-57.

Boris Bizjak, Peter Planinšič, Jože Voršič, “Tools for classification of power system disturbances,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

Žarko Čučej, Dušan Gleich, Peter Planinšič, Signali: povzetki teorije z zbirko rešenih nalog in primeri uporabe programa Matlab, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Žarko Čučej: “Communications systems in manufacturing automation”, invited lecture, Elektrotehnički fakultet, Osijek, Croatia, May 26-27, 2005.

Bojan Grčar, Žarko Čučej, Peter Cafuta: “Bologna Declaration: impact on technical study”, open tribune, Tehnički fakultet Čačak, Yugoslavia, Apr. 6, 2005. Signal Processing and Remote Control Laboratory AU - 19

Žarko Čučej: “Bologna process,” reparation of student programms, Čačak, Yugoslavia, Apr. 4, 2005.

Žarko Čučej: “Communications systems in manufacturing automation,” invited lecture, Osijek, Croatia, May 26, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Žarko Čučej: Member of international programme board, international conference, 47th International Conference on Electronic in Marine, Zadar, Croatia, June 8–10, 2005.

Prof. Dr. Žarko Čučej: Member of international programme board, international conference, 5th EURASIP Conference Focused on Speech and Image Processing, Multimedia Communications and Services, Smolenice, Slovakia, June 29 to July 2, 2005.

Prof. Dr. Žarko Čučej: Member of international programme board, international workshop, 12th International Workshop on Systems, Sygnals and Image Processing, Chalkida, Greece, Sept. 22–24, 2005.

Asst. Prof. Dr. Peter Planinšič, Reviewer, international workshop, 12th Prof. Dr. Žarko Čučej: International Workshop on Systems, Sygnals and Image Processing, Chalkida, Greece, Sept. 22–24, 2005.

Asst. Prof. Dr. Peter Planinšič: Sessions chair, Organizer and Ch. of Special Sessions "Information Technologies (IT) and their applications (1,2)., international workshop, 12th International Workshop on Systems, Sygnals and Image Processing, Chalkida, Greece, Sept. 22–24, 2005.

Asst. Prof. Dr. Peter Planinšič: Automation in Industry and Commerce AIG'05, conference, organisation and implementation, Maribor, Slovenia, Apr. 7–8, 2005.

Asst. Prof. Dr. Peter Planinšič: LabVIEW competition, student contest, AU - 20 Signal Processing and Remote Control Laboratory

organisation and implementation, Maribor, Slovenia, June 1 to Oct. 21, 2005.

Asst. Prof. Dr. Peter Planinšič: Reviewer for Optical Engineering, paper "Interferometer multispectral image compression using a novel adaptive rate control algorithm".

VISITS TO OTHER INSTITUTIONS

Dr. Dušan Gleich: Research visiter within the European 6fp Exchange program "Marie Curie". Research on SAR-data analysis and compression., visit, Wessling, Germany, Nov. 1 to Oct. 31, 2005.

Karel Benkič, Talk entitled "Tired of driving long journeys? Let the Prof. Dr. Žarko Čučej, vehicle auto-driver take on!" at " Caffe Scientifique" Panagiotis Liatsis, with Prof. Panos Liatsis. Moderator: dr: Peter Asst. Prof. Dr. Peter Planinšič, Planinšič., visit, Ljubljana, Slovenia, May 31, 2005. Tomaž Romih, MSc:

Prof. Dr. Žarko Čučej, Centre of excellent meeting, visit, Paris, France, Dr. Dušan Gleich: June 28, 2005.

Tomaž Romih, MSc: Visit within the frame of bilateral research project "Partnership in Science: PSP No.018/2005", scientific collaboration, London, United Kingdom, July 18–24, 2005.

Prof. Dr. Žarko Čučej: Execution of seminar: "Fast transmission over physical media", seminar participation, Poljče, Slovenia, Aug. 30–31, 2005.

Prof. Dr. Žarko Čučej, Execution of seminar lecture and laboratory- Srečko Grašič, computer exercises: "Radio transmission system", Asst. Prof. Dr. Peter Planinšič, seminar participation, Poljče, Slovenia, Sept. 1–2, Asst. Prof. Dr. Mitja Solar: 2005.

Prof. Dr. Žarko Čučej: Talk about establishing slovenian remote sensing centre, visit, Ljubljana, Slovenia, Sept. 14, 2005.

Karel Benkič, Execution of seminar and laboratory exercises: Signal Processing and Remote Control Laboratory AU - 21

Prof. Dr. Žarko Čučej, "Physical interfaces and protocols", seminar Tomaž Romih, MSc: participation, Poljče, Slovenia, Oct. 17–21, 2005.

Prof. Dr. Žarko Čučej: Visit within the frame of bilateral project with Serbia and Montenegro and Faculty day, visit, Čačak, Yugoslavia, Nov. 15, 2005.

Prof. Dr. Žarko Čučej, Talk about the project CRP: Slovenian remote Dr. Dušan Gleich, sensing centre. Workshop: simulation for defence., Asst. Prof. Dr. Peter Planinšič: visit, Ljubljana, Slovenia, Nov. 15–16, 2005.

Prof. Dr. Žarko Čučej: Talk about corporation, visit, Ljubljana, Slovenia, Nov. 18, 2005.

Prof. Dr. Žarko Čučej: Talk about collaboration, visit, Washington, United States, Dec. 7, 2005.

Prof. Dr. Žarko Čučej: Visit, visit, HuHunteswillenteswille, United States, Dec. 14–15, 2005.

GUESTS AND VISITORS

Panagiotis Liatsis Visit within the frame of bilateral project (City University, School of Engineering "Partnership in Science No. PSP 018/2005", and Mathematical Sciences, London, scientific collaboration, Apr. 14–19, 2005. United Kingdom):

Siniša Ranđić, Visit within the bilateral project and 14. international Radojka Krneta expert meeting Power Engineering, visit, May 10– (University of Kragujevac; Faculty of 12, 2005. Technical Science Čačak, Čačak, Yugoslavia):

Aleksander Peulić Visit in the frame of bilateral project and Tempus (University of Kragujevac; Faculty of IMG-2005 sholarhip scheme, scientific Technical Science Čačak, Čačak, collaboration, Aug. 20 to Sept. 20, 2005. Yugoslavia):

Tomas Zeman, Visit within the frame of European project Elefants, Tluchorova Lenka scientific collaboration, Sept. 4–5, 2005. (Czech Technical University in Prague, AU - 22 Signal Processing and Remote Control Laboratory

Faculty of Electrical Engineering, Prague, Czech Republic):

Aleš Florjanc Visit within the project CRP: Slovenian Remote (Ministry of Defence, Ljubljana, Sensing Centre, visit, Nov. 3, 2005. Slovenia):

Sofija Bogdanov, Visit within the frame of Tempus project, scientific Dimitar Trajkovski collaboration, Nov. 7–13, 2005. (University of Ciril and Metod Skopje, Faculty of EE, Skopje, The Former Yugoslav Republic Macedonia):

Janko Vrbič, Talk about corporation, education and training for Sašo Ličar MORS, visit, Nov. 11, 2005. (Ministry of Defence, Ljubljana, Slovenia):

Rudi Zorko Talk about preparation of common industrial project (Metrel d.o.o., 1354 Horjul, Slovenia): with company Metrel d.o.o, visit, Dec. 23, 2005.

Process Automation Laboratory AU - 23

PROCESS AUTOMATION LABORATORY

Head: Assoc. Prof. Dr. Boris Tovornik Phone: +386 2 220 71 60 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Basic research project

LPA-DN Diagnostika napak (Fault Diagnosis) Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering and Computer Science) Participants: Alojz Hojnik, Asst. Prof. Dr. Nenad Muškinja, Božidar Bratina Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Connectivity between systems is a very important task to achieve efficient, on-line fault detection and diagnosis. Beside the research work on analytical methods for fault detection in industrial processes, a lot of research was done in the testing of these methods on real systems. For compatibility between systems, an OPC interface together with MATLAB software was used. Two methods were realized and applied to a real system; the first one was based on observers and the second one used filters. In both of them an adaptive threshold function for better fault detection was used and tested. Due to known limitations of these methods the research work moved to statistical methods, where history about the process operation, data acquisition and communication, are very important. Research was also done in the field of reasoning, where instead of Boolean logic a TBM or Fuzzy logic was used to determine which fault occurred. AU - 24 Process Automation Laboratory

Research and development projects

STV AK3-1 SODOBNE TEHNOLOGIJE VODENJA ZA POVEČANJE KONKURENČNOSTI - Napredni gradniki za celovit sistem računalniško podprtega vodenja proizvodnje (MODERN MANAGEMENT TECHNOLOGIES TO IMPROVE COMPETITIVE POSITION - Advanced Elements for Computer Supported Production System Management) Leader: Stojan Kokošar (Synatec d.o.o.) Participants: Alojz Hojnik, Assoc. Prof. Dr. Boris Tovornik, Asst. Prof. Dr. Marjan Golob, Asst. Prof. Dr. Nenad Muškinja, Božidar Bratina Project partners: Synatec, d.o.o., INEA, d.o.o., Metronik, d.o.o., Robotina, Špica International, Inštitut Jožef Stefan, Faculty of Electrical Engineering, University of Ljubljana Financed by: European Union, Ministry of Economics of the Republic of Slovenia

The proposed project “Advanced Elements for Computer Supported Production System Management” is one of the projects that are being carried out under the joint project “Modern Management Technologies to Improve Competitive Position”. Level of information technologies used in Slovenian production companies is at least 10 years behind developed countries. Main reasons are lack of knowledge, personnel and investment means. To improve the present situation, many important Slovenian companies offering information and communication management services together with relevant academic institutions have started working on two main goals: • Accelerated development of fully information technology system for production management with added new functionalities. • Accelerated introduction of these new information systems for production management among potential users (industrial companies) through demonstration projects. Partners involved in this project are covering all of the important aspects of development process, transfer of knowledge, introduction, implementation and exploitation of computer based production management systems, and uses a joint marketing strategy for introduction of these advanced products on the market: • Leading Slovenian engineering companies - implementation companies - in the field of computer supported systems for production management. • Industrial companies – users of systems for production management. • Academic institutions, cooperating at the level of use, transfer and introduction of computer based production management systems. Process Automation Laboratory AU - 25

The project will provide fundamentals for future goals: • Development of models for computer supported production system management, on the basis of existing reference models, standards, products on the market and experiences. • Realization of new functionalities of the production system management, which will provide and assure more effective control and appropriate production management. • Execution of 6 demonstration projects in complex production plants such as serial production processes. • To uniform the process of carrying out the projects in the field of computer supported production. • Evaluation of achieved results within increased production efficiency. • Development of the projects’ results marketing strategy in the middle Europe. • Possibility of cooperation between partners when applying for big projects.

LPA-IH Inteligentna hiša (Intelligent House) Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering and Computer Science) Participants: Alojz Hojnik; Asst. Prof. Dr. Nenad Muškinja; Božidar Bratina; Aleksander Polutnik, MSc The model of an intelligent house is used for the testing of different remote control approaches and connections between sub-systems in buildings. Beside a classic control of systems in buildings, very important aspects are also energy use, a flexibility, is the system user friendly, etc. Investments in enhanced supervisory systems for buildings are growing, hence they consist of more and more sophisticated systems which have to communicate and work in harmony. System that includes information from industrial systems and information from intelligent building system contributes to transparency of the whole system, better control, and offers a good support to management systems. The test application consisted of heating, ventilation and cooling system, running on an industrial PLC that was connected to a joint SCADA system together with a well established technology for intelligent buildings - Lonworks (laboratory model of the intelligent house).

CO STV RRP3 Center odličnosti za sodobne tehnologije vodenja - RR projekt: AK3a-3 (Center of Exelence for Advanced Control Technologies - R&D Project: AK3a-3) Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering AU - 26 Process Automation Laboratory

and Computer Science) Participants: Aleksander Polutnik, MSc; Asst. Prof. Dr. Nenad Muškinja; Asst. Prof. Dr. Marjan Golob; Alojz Hojnik; Asst. Prof. Dr. Martin Terbuc; Božidar Bratina Project partners: Faculty of Electrical Engineering and Computer Science, TELEM, d.o.o., INEA, d.o.o., Faculty of Electrical Engineering, Univesity of Ljubljana, Inštitut Jožef Stefan, Špica International, d.o.o. Financed by: European Union, Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The main objective of the project part »The technologies of the remote and distributed control« within the complete project »The Centre of Excellence for modern technology control« is to perform research and development activities in the area of new communication technologies for the purpose of the remote and distributed control. This year, the specifications have been elaborated. The specification of the laboratory test system of the remote and distributed control has been done. The specification of the universal system of obtaining the information by means of public telecommunication processes has been done. The specification of the control centre and web supported control of dislocated processes has been done. All specifications define software and hardware, the communication channels, protocol, control systems and other builders. The development of the communication builders for the data transfer by using public communication network has been started. Communication system must enable the adaptation to local abilities of the network. The development of wireless communications and builders appropriate for the remote and distributed systems of control has been started. Implementation of the interface for GSM, GPRS and SMS technology has been done. The implementation of virtual private network (intranet) technology for the system requirements of the remote and distributed control has been finished.

Industrial projects

TP-VS Tehnološka platforma - Vgrajeni sistemi (Technology Platform - Embedded Systems) Leader: Janez Renko (Gospodarska zbornica Slovenije) Participants: Assoc. Prof. Dr. Boris Tovornik Project partners: Alpineon, d.o.o., ATech elektronika, Danfoss Trata, ELPROS, Gorenje, d.d., Program Point, Inštitut Jožef Stefan, Iskra MEHANIZMI, d.d., Iskra Sistemi, Iskra Emeco Kranj, Logina, Address: Medius, d.o.o., Tržaška cesta 118, 1000 Ljubljana, Process Automation Laboratory AU - 27

Slovenia eMail:, Metrel, d.o.o., Optotek, Smarteh, PCT–Technology Network, Tehtnica, Faculty of Electrical Engineering, Univesity of Ljubljana, Faculty of Electrical Engineering and Computer Science Financed by: Ministry of Economics of the Republic of Slovenia, Ministry of Education, Science and Sport of the Republic of Slovenia

Technology platform ARTEMIS – Embedded systems, is designed to be an integrator and a development and research centre in this field in Europe by joining and propagating the science and technology basics, promoting innovations and strengthening industrial possibilities. In the year 2005, a technology platform Embedded systems was formed based on the European model ARTEMIS and under the supervision of Chamber of Commerce and Industry of Slovenia. The strategy goals of the Embedded systems platform is to establish a goal oriented direction by communication with European technology platform, performing popularization and promotion, interactive communication and education, affecting on the education process, cooperating in standardization procedures and incorporating ICT networks. Main goals of the platform: - development of applications for the future that allow global services with embedded intelligence and inter-compatibility of devices, and which must be standardized and legally supervised; - integration of computers into components, achieving autonomous behaviour and reducing power consumption; - to increase the use of sensors, minimization technology and wireless communications.

DIGIMIG Vgrajen digitalni krmilnik novih sinergijskih MIG/MAG varilnih aparatov (Embedded Digital Controller of New Synergic MIG/MAG Welding Devices) Leader: Asst. Prof. Dr. Marjan Golob (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Boris Tovornik; Alojz Hojnik; Asst. Prof. Dr. Nenad Muškinja; Janez Pogorelc, MSc; Božidar Bratina; Jože Korelič Financed by: Varstroj, d.d.

The industrial project goal was to develop an embedded digital controller for a new family of synergic MIG/MAG welding devices. The controller is based on microprocessors PIC 16F877 and 18F452. The controller enables the operation of a welding device in several different modes. The setting method of the speed of the welding wire feed is simplified, and PWM control of the DC motor unit, digital read-outs (current, voltage, wire feed), and a synergic AU - 28 Process Automation Laboratory

parameter settings is redesigned. If we compare the new embedded control card with the old one, we come up with various advantages, among them the most important are; showing of the welding current, welding tension, movement velocity of the welding wire and the synergic way of machines activity. The project was successfully ended and a production of a series of new welding machines (VARMIG Synergic 250, VARMIG Synergic 300, VARMIG Synergic 350 and VARMIG Synergic 400) are startet.

International projects

E!3223 - FDLC The Fuzzy Logic Control Of Distillation Process Leader: Andrej Rotovnik (MIEL Elektronika, d.o.o) Participants: Asst. Prof. Dr. Marjan Golob, Alojz Hojnik, Asst. Prof. Dr. Nenad Muškinja, Assoc. Prof. Dr. Boris Tovornik, Božidar Bratina Project partners: Tasmo Bit, Moray College Financed by: EUREKA

A fuzzy logic control system for the distillation process will be developed. In these types of technological process there is a lot of empirical knowledge, which will be transformed into fuzzy logic rules and used for computer supported process. This year the laboratory model of the distillation process has been developed. The model has been successfully tested.

CEEPUS-CII-CZ- International study in Automatic Control 0031 Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering and Computer Science) Project partners: Faculty of Electrical Engineering and Communication, Brno University of Technology, Technical University of Sofia - Branch Plovdiv, Czech Technical University Prague, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Faculty of Natural Sciences, Mathematics and Education, University of Split, Faculty of Chemical Engineering and Technology, University of Zagreb, University of Miskolc, Kielce University of Technology, Slovak University of Technology in Bratislava, Technical University of Kosice, Lublin University of Technology Financed by: CEEPUS

In the year 2005/06 the project CEEPUS II network started. This network is designed to stimulate academic mobility between partnership universities, in particular student mobility Process Automation Laboratory AU - 29

within Central Europe. The shortest possible mobility of undergraduate students is one semester where the student has to fulfill all study obligations at a host institution, which is completely acknowledged by the home institution. The obligations of the teacher mobility programme is to give lectures 6 hours per week at the host institution. In cooperation with universities in Prague, Brno, Bratislava and Split, we prepared Joint programmes for postgraduate students of the partnership universities. We also participated at summer school in Brno, Czech Republic.

RoboLab Control Systems and Automatisation in Marine Vehicles Leader: Zoran Vukić (Department of Control and Computer Engineering and Automation, Faculty of Electrical Engineering and Computing, University of Zagreb) Participants: Mogens Blanke, Assoc. Prof. Dr. Boris Tovornik, Satko Mandjuka, Guy O. Beale, Ljubomir Kuljača Project partners: Brodarski Institute Zagreb, Technical University of Denmark, Automation at Oersted.DTU, George Mason University, Faculty of Electrical Engineering and Computing, University of Zagreb Financed by: Ministry of Science and Technologyt of the Republic of Croatia

The aim of the research is the realisation of a marine vehicle system, qualified for autonomous decisions and task co-ordination. The goals of this vehicle are complete autonomy without any human presence.

PUBLICATIONS

Stojan Peršin, Boris Tovornik, “Real-time implementation of fault diagnosis to a heat exchanger,” Control Engineering Practice, Vol. 13, No. 8, pp. 1061-1069, 2005.

Anton Verdenik, Boris Tovornik, Nenad Muškinja, “Računalniško vodenje procesa elektrolize aluminija,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 121-126, 2005.

Saša Sokolić, Alenka Žnidaršič, Boris Tovornik, “Vloga avtomatike na področju proizvodne informatike,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 15-30.

Marjan Golob, Arpad Köveš, Boris Tovornik, “Embedded fuzzy systems in welding power sources,” Preprints of the 16th IFAC World Congress, Praga, Češka, Jul. 2005. AU - 30 Process Automation Laboratory

Darjan Gradišnik, Nenad Muškinja, Branimir Verhovnik, “Veter kot alternativni vir energije,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 174-179.

Andrej Sarjaš, Rajko Svečko, Amor Chowdhury, Nenad Muškinja, “Regulacija ravnovesja valjčka na letvi v prostoru stanj,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 43-46.

Boris Tovornik, Božidar Bratina, “A different modelling approach for modelling of hydraulic systems for educational purposes,” Proceedings of the International conference Intelligent control systems, 2005, pp. 134-140.

Dejan Valh, Božidar Bratina, Boris Tovornik, “Real-time implementation of fault sensitive filters to a three-tank laboratory plant,” Proceedings, EUROCON 2005 - The International Conference on "Computer as a Tool", Beograd, Serbia and Montenegro, Nov. 2005.

Drago Valh, Božidar Bratina, Boris Tovornik, “Fault detection using non-linear model-based approach,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 211-216.

Janez Pogorelc, Uroš Derstvenšek, Andrej Koštomaj, Marjan Golob, Ivan Bohnec, Silvin Domjan, “Razvoj in testiranje programske opreme mikrokrmilniškega vgrajenega sistema za varilne naprave,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 105-109.

Boris Tovornik, Nenad Muškinja, Dali Đonlagić, “Brza detekcija i analiza dogadaja na elektroenergetskom sistemu,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Nenad Muškinja: “Regional primary school competition in construction and drive in mobile robots LegoBum,” organization and realization of competition, Maribor, Slovenia, May 12, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Assoc. Prof. Dr. Boris Tovornik, Automation in Industry and Commerce AIG'05, Asst. Prof. Dr. Nenad Muškinja, conference, organisation and implementation, Asst. Prof. Dr. Marjan Golob, Maribor, Slovenia, Apr. 7–8, 2005. Process Automation Laboratory AU - 31

Božidar Bratina, Alojz Hojnik, Aleksander Polutnik, MSc:

Asst. Prof. Dr. Marjan Golob: LabVIEW competition, student contest, organisation and implementation, Maribor, Slovenia, June 1 to Oct. 21, 2005.

Asst. Prof. Dr. Marjan Golob: Reviewer for ISA Transactions, referee of a scientific articles.

Asst. Prof. Dr. Marjan Golob: Reviewer for Applied Soft Computing, referee of a scientific articles.

Asst. Prof. Dr. Marjan Golob: Reviewer for Journal of Intelligent & Fuzzy Systems, referee of a scientific articles.

Asst. Prof. Dr. Marjan Golob: Reviewer for IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics, referee of a scientific articles.

VISITS TO OTHER INSTITUTIONS

Božidar Bratina, Lectures at Summer School on Intelligent Control Assoc. Prof. Dr. Boris Tovornik: Systems, seminar participation, Brno, Czech Republic, Aug. 29 to Sept. 11, 2005.

Božidar Bratina, Visit of the research laboratories at faculty and Asst. Prof. Dr. Marjan Golob, dean's office, visit, Zagreb, Croatia, Nov. 25, 2005. Asst. Prof. Dr. Nenad Muškinja:

GUESTS AND VISITORS

Darko Stipaničev Exchange of professors in the CEEPUS II- CZ 0031 (Faculty of Electrical Engineering, programme, research work, Jan. 3–16, 2005. Mechanical Engineering and Naval Architecture,University of Split, Split, Croatia):

Ljubomir Kuljača, Bilateral cooperation between Process Automation AU - 32 Process Automation Laboratory

Zoran Vukić Laboratory and Department of Control and (Department of Control and Computer Computer Engineering in Automation, University of Engineering and Automation, Faculty Zagreb, several visits per year, research work, Jan. of Electrical Engineering and 14, 2005. Computing, University of Zagreb, Zagreb, Croatia):

Desanka Ičitrajkova Exchange of students in the IAESTE programm, (Ss. Cyril and Methodius University, visit, July 15 to Sept. 30, 2005. Faculty of electrical engineering, Skopje, The Former Yugoslav Republic Macedonia):

DECORATIONS, AWARDS, AND HONOURS

Ivan Bohnec, Silvin Domjan, Asst. Prof. Dr. Marjan Golob: pomurje Chamber of Commerce and Industry gold award for innovation for the development of the welding machine Varming 450 – Synergic, Murska Sobota, Slovenia, Nov. 30, 2005.

Drago Jakopič: award of Vratislav Bedjanič for BSC work. Title: Automation of arranging steel bars in Štore Steel company. Advisor: Assoc. Prof. Dr. Boris Tovornik, Ljubljana, Slovenia, Dec. 8, 2005.

Measurements Laboratory AU - 33

MEASUREMENTS LABORATORY

Head: Assoc. Prof. Dr. Vojko Matko Phone: +386 2 220 71 11 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Basic research project

LEM - DPGPS Diferencialno pozicioniranje ob uporabi DGPS signalov v Sloveniji (Differential positioning using DGPS signals in Slovenia) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog Project partners: Autronic, d. o. o. The research will focus on the use of the DGPS (Differential Global Positioning System) in Slovenia. By delivering an unprecedented accuracy to within several centimers, the system represents a new challenge for users in Slovenia seeking pinpoint accuracy. This technology represents a basis for users of state-of-the-art information technology. The use of ground relay stations that transmit corrected satellite navigation signals enables up to ten time- reduced measurement uncertainty, which can also be observed in case of the loss of satellites. Delivering a very realible and accurate positioning, the system has a great potential for development. Cartezian coordinates in calculations are also related to additional two time lags from the zero meridian. AU - 34 Measurements Laboratory

Applied projects

LEM - DGPS DGPS prostorsko pozicioniranje (DGPS - Spatial Positioning) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Differential positioning is a system designed to improve the accuracy of GPS positioning. It consists of 25 ground reference stations that monitor GPS satellite data and determining the current accuracy of a GPS signal. Two master stations collect data from the reference stations and create a GPS correction message. The corrected differential message is then broadcast through one of two geostationary satellites. By applying the corrections and recalculating the position, accuracy from within several meters to within a few centimeters (30 cm) is achieved. The research focuses on the analysis of the system and its general applicability in Slovenia.

Research and development projects

LEM - M2-0034 Raziskava elektromagnetnega sevanja radijskih telekomunikacijskih sistemov in postopki človeka pri ravnanju s temi napravami (Research on the biological effects of electromagnetic radiation (EMR) of radio telecommunication systems and measures to be taken to minimise health risks associated with EMR) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Miloš Vute; Ladislav Mikola, MSc; Stanislav Lampič; Marko Podberšič; Darko Hercog; Dr. Bojan Gergič Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of Defence

The project includes the revision of adopted standards and other regulations concerning biological effects, the study of the situation within the EU and NATO, an overview of radio telecommunications systems and devices, their effect on people (the study of literature and experiments), the study of the correct device usage and correct rescue procedures to be adopted when such devices are involved. Project findings will be presented in a table. In the final stage of the project, a training material for the Ministry of Defence will be produced. Measurements Laboratory AU - 35

LEM – DSP Oddaljen laboratorij inštitutov avtomatike in robotike REMOTELAB (Remote laboratory of Institute of Automation and Institute of Robotics) Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog, Dr. Bojan Gergič Financed by: Ministry of Science and Technologyt of the Republic of Croatia

Developed remote laboratory is based on two well-known commercially available software packages i.e. MATLAB/Simulink the product of The Mathworks Inc. and LabVIEW from the National Instruments company and a custom-made hardware i.e. DSP controller. MATLAB/Simulink is used for control algorithm development, simulation, offline analysis and rapid executable code generation and LabVIEW as a user front end. While the generated code is executing on the DSP-2 controller and through the analog and digital I/O lines drives the real process, LabVIEW virtual instrument (VI), running on the PC, provides the ability for on-the-fly parameter tuning, signal monitoring, online analysis and, via Remote Panels technology remote operation. Remote lab is accessible on the following web page: http://remotelab.ro.feri.uni-mb.si.

LEM-DSP2VI Virtualni instrument za DSP-2 kartico (Virtual instrument for DSP-2 controller) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog, Dr. Bojan Gergič Financed by: Ministry of Science and Technologyt of the Republic of Croatia

The main aim of this project was to extend existing DSP-2 rapid control prototyping (RCP) system with the LabVIEW user interface. Until now, initial version of LabVIEW add-on toolkit named ComVIEW has been realized. In addition to the rapid user interface creation, this toolkit provides functions for executable code download to the DSP-2 controller, online data visualization and online parameter tuning. Using LabVIEW »Remote Panels« technology, remote control of the DSP-2 system via the internet can be realized. LabVIEW toolkit has been developed so that it can be used in combination with the MATLAB/Simulink. LabVIEW virtual instrument (VI) is automaticaly created during executable code generation process, when the Simulink is used for the DSP-2 programming. Afterwards, VI can be fully accomodate by the end user. AU - 36 Measurements Laboratory

LEM - REMOTELAB Oddaljeni laboratorij za električne meritve (Remote Laboratory for Electrical Measurements) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog, Dr. Bojan Gergič Financed by: Ministry of Science and Technologyt of the Republic of Croatia

The remote laboratory consists of computer-based instrumentation and virtual instrument implemented with the LabVIEW. The Remote Panels feature of LabVIEW allows the teacher to quickly publish the front panel of a LabVIEW application for use in a standard Web browser. Once published, the students can monitor and control the experiments carried out locally on the remote laboratory server. These real-world remote laboratory experiments are available to the students all the time and demonstrate the capability of virtual instrumentation.

Industrial projects

LEM - OCMSAP Odzivni čas meritev v SAP programskem okolju (Response Time Measurement Inside SAP Program Aplications) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog, Dr. Bojan Gergič, Samo Uršej Project partners: Prevent, d. o. o. Financed by: Prevent, d. o. o.

The development of this application required extensive knowledge of J2EE standards, Java Programming Language, JSP and Servlet technologies, html and XML files, and of the SQL language. The developed application proves that these technologies are capable of transferring data between two otherwise incompatible systems, using different databases and operating systems.

LEM-UAPM Določanje merilne negotovosti kontrole števcev električne energije in stikalnih ur (Uncertainty analysis of calibration of energy meters and tariff switching clocks) Leader: Ladislav Mikola, MSc (Faculty of Electrical Engineering and Computer Science), Dr. Bojan Gergič (Faculty of Electrical Measurements Laboratory AU - 37

Engineering and Computer Science) Financed by: Elektro Maribor, d. o. o.

For the company Elektro Maribor d.d., the training of their engineers about measurement uncertainty and uncertainty analysis of calibration of energy meters and tariff switching clocks were performed for the accreditation of their measurement laboratory.

Completed research projects 2005

Applied project

LEM - MDMIEMIF Merjenje digitalnih motenj in izbira EMI filtrov (Measurement of Digital Disturbances and EMI Filter Selection) Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science) Participants: Marko Podberšič Project partners: Iskra Emeco Kranj Financed by: Ministry of Defence, Ministry of Education, Science and Sport of the Republic of Slovenia

Duration: Jan. 2003 to Dec. 2005

To reduce the amount of EMI radiated from an electronic device using various types of processors, a number of algorithms was suggested and developed. Optimal EMI reduction is based on the individual treatment of each single line and the selection of an appropriate EMI filter for each of these lines separately. Such an approach reduces the EMI by 10-30 dB.

PUBLICATIONS

Darko Hercog, Karel Jezernik, “Rapid control prototyping using MATLAB/Simulink and a DSP- based motor controller,” Int. j. eng. educ., Vol. 21, No. 4, pp. 596-605, 2005.

Riko Šafarič, Mitja Truntič, Darko Hercog, Gregor Pačnik, “Control and robotics remote laboratory for engineering education,” Int. j. online eng., Vol. 1, No. 1, 8 f., 2005.

Suzana Uran, Darko Hercog, Karel Jezernik, “Web-based MATLAB and controller design learning,” IEEE Ind. Electron. Soc. newsl., Vol. 52, No. 4, pp. 14-16, 2005. AU - 38 Measurements Laboratory

Darko Hercog, Bojan Gergič, Vojko Matko, “Remote lab for electric drives,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1685-1690.

Bor Hostnik, Vojko Matko, “Izjava o varnosti z oceno tveganja,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 239-241.

Dejan Kos, Darko Hercog, Karel Jezernik, “Izvedba regulacijskega in modulacijskega algoritma na FPGA vezju za enosmerni motor z majhno električno časovno konstanto,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 403-406.

PRESENTATIONS BY THE LABORATORY MEMBERS

Bojan Gergič, Miloš Vute, Ladislav Mikola, Vojko Matko, Darko Hercog: “Presentation of the CRP - M2-0034 Project Research Work,” electromagnetic Radiation (EMC) from Telecommunication Systems and Safety Procedures for the Use of Such Devices, Maribor, Slovenia, Apr. 21, 2005.

Darko Hercog, Bojan Gergič: “Presentation of Institute of Robotics at fair Hevreka'05,” collaboration at fair with our products, posters and handbills, seminar: "FPGA IC in industrial products", Ljubljana, Slovenia, May 24, 2005.

Bojan Gergič: “Natural Science and Technics Day,” workshop: Virtual Instruments, Maribor, Slovenia, Sept. 16, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Dr. Bojan Gergič, LabVIEW competition, student contest, Darko Hercog, organisation and implementation, Maribor, Assoc. Prof. Dr. Vojko Matko: Slovenia, June 1 to Oct. 21, 2005.

VISITS TO OTHER INSTITUTIONS

Assoc. Prof. Dr. Vojko Matko: Research work - CRP, scientific collaboration, Ljubljana, Slovenia, Apr. 7, 2005.

Assoc. Prof. Dr. Vojko Matko: Chairman of the Jury for the 1st National Technical School Student Competition, research work, Measurements Laboratory AU - 39

Velenje, Slovenia, Apr. 22, 2005.

Ladislav Mikola, MSc: TCL Board session and visit to laboratory, formal call, Velenje, Slovenia, May 9, 2005.

Assoc. Prof. Dr. Vojko Matko: Street navigation, research work, Ljubljana, Slovenia, June 15, 2005.

Dr. Bojan Gergič, To examine the coalmine and cave, visit, Velenje, Ladislav Mikola, MSc, Slovenia, June 21, 2005. Miloš Vute:

Assoc. Prof. Dr. Vojko Matko: Research work, postgraduate research work, Maribor, Slovenia, July 11, 2005.

Darko Hercog: Expert and research study, modifications of Buck converter, postgraduate research work, CH-8092 Zurich, Switzerland, Sept. 19 to Oct. 14, 2005.

Assoc. Prof. Dr. Vojko Matko: Java research work, postgraduate research work, Slovenj Gradec, Slovenia, Oct. 14, 2005.

Dr. Bojan Gergič, EMS measurement of RTV transmitter on Pohorje Viktor Goričan, hill, research work, Maribor, Slovenia, Oct. 28, Stanislav Lampič, 2005. Ladislav Mikola, MSc, Miloš Vute:

Assoc. Prof. Dr. Vojko Matko, Conference, research work, Ljubljana, Slovenia, Ladislav Mikola, MSc: Nov. 10, 2005.

Assoc. Prof. Dr. Vojko Matko: Measurement software, research work, Trzin, Slovenia, Dec. 15, 2005.

GUESTS AND VISITORS

Ray Almgren Donation of Education Laboratory Virtual (National instruments d.o.o., Radeče, Instrumentation Suite (NI ELVIS), visit, Apr. 7, Slovenia): 2005. AU - 40 Measurements Laboratory

Boštjan Tavčar, CRP research presentation, research work, Apr. 21, Marko Podberšič, 2005. Zoran Krebs, Grilanc Ivanka (Ministry of Defence, Ljubljana, Slovenia):

Electro-Optics and Sensor Systems Laboratory AU - 41

ELECTRO-OPTICS AND SENSOR SYSTEMS LABORATORY

Head: Assoc. Prof. Dr. Denis Đonlagić Phone: +386 2 220 71 17 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

ASS Optični senzor prisotnosti (Anti squeeze sensor) Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science) Participants: Matjaž Linec Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

The aim of this project was to develop an optical sensor for the detection of obstacles between a car window and the window frame. The development of this sensor is a direct response to ever growing demands concerning passenger safety and injury protection in passenger carrying vehicles. The proposed solution enables force detection well below EU restrictions and is compatible with the modern trend of incorporating plastic optical fibers in vehicles.

PQDTS Polarimetrični kvazi – distribuiran vlakenski temperaturni senzor (Polarimetric quasi - distributed fibre optic temperature sensor) Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science), Miran Lešič (Faculty of Electrical Engineering and Computer Science) AU - 42 Electro-Optics and Sensor Systems Laboratory

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

The aim of this project is to develop a quasi – distributed fibre optic temperature sensor based on the temperature dependence of light polarization in special optical fibres. Known proposed solutions to this problem are complex and require expensive signal processing equipment. Our solution is based on the attenuation of the propagating light and can be therefore read using commercially available OTDR-s. At this moment we are able to read the temperature range of 100 oC in a single temperature segment. The working point can be individually tuned during the manufacturing process.

FOVAD Optični vlakenski detektorji osi (Fibre optic vehicle axle detectors) Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science) Participants: Marjan Hanč, Dr. Edvard Cibula, Marko Kresnik Project partners: Mikrobit, d. o. o. Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Mikrobit, d. o. o.

The aim of this project is to develop a new generation of vehicle axle detectors based on fibre optic interferometry that is embedded in the upper layer of asphalt. The system is based on special signal processing that allows for cost effective design of the final system. Three prototypes have undergone 3 years of extensive testing in a live environment. Currently the project is in its final stage of developing a commercially viable product.

Research and development projects

DEFTS Kvazi - distribuiran evanescentni merilnik temperature (Quasi – distributed evanescent temperature sensor) Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science) Participants: Marko Kežmah Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

The aim of this project is to develop a quasi-distributed optical temperature sensor based on the evanescent field of multimode fibres. We have successfully designed and tested a single point sensor with temperature range of 100 oC. The resulting sensor was then integrated in a quasi-distributed system built out of 10 subsequent sensors. Much of the work on the system has been focused on mode conditioning, loss management and the control on cross talk Electro-Optics and Sensor Systems Laboratory AU - 43

between adjacent sensors.

International projects

VMOEMS Fibre MOEMS Sensors Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Edvard Cibula, Matjaž Linec, Marko Kežmah Financed by: Roctest FISO Technologies Incorporated

The aim of this project is to develop an array of Fibre Micro Optical Electro – Mechanical systems. One of the proposed solutions is an optical fibre strain sensor based on a Fabry- Perot resonator in the form of an aerial rift inside the fibre itself. We have developed a working prototype that features linear responsivity, low transmission losses, low temperature dependence and a simple manufacturing process. The result of this project is an awarded patent in Slovenia.

Miniature optical fiber pressure sensor with SIO2 membrane.

This miniature optical pressure sensor is based on optical fibres and SiO2 membranes. The developed product could be used in many diverse applications such as biomedicine, different industry fields, etc. Because of the special manufacturing technique the sensor can be tuned for pressure ranges from 0 to 40kPa for uses in medicine, as well as several hundred MPa. The use of SiO2 enables high chemical and temperature resistance. Optical quasi-distributed pressure sensor is based on a multitude of successive point pressure sensors embedded inside an optical fibre. The composition, therefore, acts as a quasi-distributed pressure sensor. The sensor itself is electrically passive and very resistant against high temperatures and aggressive media. It is appropriate for high pressure measurements. AU - 44 Electro-Optics and Sensor Systems Laboratory

The fabrication of micro lenses on top of optical fibres allows integration of MOEMS technology into optical fibres. The manufacturing process is based on the use of appropriate fibres combined with different etching techniques. Micro lenses can be used in optical communication systems, sensor systems, micro optics, etc.

PUBLICATIONS

Edvard Cibula, Denis Đonlagić, “Miniature fiber-optic pressure sensor with a polymer diaphragm,” Appl. opt., Vol. 44, No. 14, pp. 2736-2744, May 2005.

Denis Đonlagić, “Opportunities to enchance multimode fiber links by application of overfilled launch,” J. lightwave technol., Vol. 23, No. 11, pp. 3526-3540, Nov. 2005.

Denis Đonlagić, Edvard Cibula, “All-fiber high-sensitivity pressure sensor with SiO2 diaphragm,” Opt. lett., Vol. 30, No. 16, pp. 2071-2073, 2005.

Denis Đonlagić, Edvard Cibula, “An all-fiber scanning interferometer with a large optical path length difference,” Opt. lasers eng., Vol. 43, pp. 619-623, 2005.

Marko Kežmah, Denis Đonlagić, “Modularno zasnovani sistemi za testiranje na primeru komore za temperaturno cikliranje,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 243-246.

GUESTS AND VISITORS

Onno Bresser Presentation and mutual collaboration agreements, (Twentsche Fibre Optics Ltd, Nanjing, visit, Feb. 17, 2005. People Republic of China):

Eric Pinet Presentation and mutual collaboration discussions, (Roctest FISO Technologies visit, June 1–3, 2005. Incorporated, Quebec, Canada):

Friedman Mohr Visit and presentation, visit, June 8, 2005. (Pforzheim University of Applied Sciences, Pfortsheim, Germany):

Jorg Ziel Presentation and mutual collaboration discussions, (Erka Kallmeyer Medizintechnik GmbH visit, July 19, 2005. & Co. KG, Chemnitz, Germany): Electro-Optics and Sensor Systems Laboratory AU - 45

Sylvain Rioux Mutual collaboration agreement, scientific (Roctest FISO Technologies collaboration, Aug. 22, 2005. Incorporated, Quebec, Canada):

DECORATIONS, AWARDS, AND HONOURS

Matjaž Linec: best Student of Industrial engineering, class of 2005, Dec. 8, 2005.

Institute of Electronics EL - 1

INSTITUTE OF ELECTRONICS

Head: Prof. Dr. Bogomir Horvat Phone: +386 2 220 72 00 E-mail: [email protected] URL: http://www.elektronika.uni-mb.si

The Institute of Electronics has 40 full-time and 7 part-time employees including 3 full professors, 3 associate professors, 9 assistant professors, 2 lecturers, assistants, researchers, and technical staff. The main activities of the Institute of Electronics are teaching graduate and postgraduate courses and research. Research is currently focused on one fundamental research project, which is financed by the Ministry of Education, Science and Sport of the Republic of Slovenia, projects with local industry, six international projects and projects with foreign industry partners.

In 2005, the Institute of Electronics staff published 51 papers presenting the findings of its research, organised meetings and conferences, and visited several institutes. The primary areas of study at the Institute of Electronics are multimedia systems, digital signal processing, speech recognition, language technology, formal verification of distributed systems, electronic circuits, digital filters, and microcomputer structures.

Members of the Institute of Electronics are organised into four laboratories and two centres of technology. EL - 2 Institute of Electronics

Institute of Electronics Head: Prof. Dr. Bogomir Horvat

Digital Information Electronics Systems Systems Laboratory Laboratory Head: Head: Prof. Dr. Bogomir Horvat Assoc. Prof. Dr. Rudolf Babič

Microcomputer Digital Signal Systems Processing Laboratory Laboratory Head: Head: Prof. Dr. Zmago Brezočnik Prof. Dr. Zdravko Kačič Institute of Electronics EL - 3

Digital and Information Systems Laboratory

Head: Prof. Dr. Bogomir Horvat

Employees: Asst. Prof. Dr. Mitja Solar; Asst. Prof. Dr. Janez Stergar; Rado Slatinek, MSc; Dr. Iztok Kramberger; Dušan Prelog, BSc; Dejan Miletić, BSc; Srečko Grašič

Partime employees: Dr. Marko Jagodič, Dr. Gorazd Kandus, Dr. Janez Trontelj, Dr. Nikola Pavešič, Dr. Bojan Imperl; Dr. Monika Kapus Kolar

Microcomputer Systems Laboratory

Head: Prof. Dr. Zmago Brezočnik

Employees: Assoc. Prof. Dr. Tatjana Kapus; Bogdan Dugonik, MSc; Filip Samo Balan, MSc; Robert Meolic, MSc; Boštjan Vlaovič, BSc; Peter Vicman, BSc; Aleksander Vreže, BSc

Digital Signal Processing Laboratory

Head: Prof. Dr. Zdravko Kačič

Employees: Dr. Mirjam Sepesy Maučec; Asst. Prof. Dr. Matej Rojc; Marcel Ogner, BSc.; dr. Vladimir Hozjan; Damjan Vlaj, BSc; Darinka Verdonik, prof. slov., dr. Bojan Kotnik; dr. Tomaz Rotovnik; Aleksandra Zögling Markuš, Ing.;

Centre for Language Technologies

Head: Prof. Dr. Zdravko Kačič

Electronic Systems Laboratory

Head: Assoc. Prof. Dr. Rudolf Babič

Employees: Assoc. Prof. Dr. Tomaž Dogša; Asst. Prof. Dr. Franc Jurkovič; Gerhard Angleitner, MSc; Asst. Prof. Dr. Bojan Jarc; Dr. Matej Šalamon; Davorin Osebik, MSc; Branko Drevenšek, BSc; Anton Vesenjak, Ing.

Centre for Verification and Validation of Systems

Head: Assoc. Prof. Dr. Tomaž Dogša EL - 4 Digital and Information Systems Laboratory

DIGITAL AND INFORMATION SYSTEMS LABORATORY

Head: Prof. Dr. Bogomir Horvat Phone: +386 2 220 72 00 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

POLIDAT Telefonska govorna baza POLIDAT (Telephone Speech database POLIDAT) Leader: Prof. Dr. Bogomir Horvat (Faculty of Electrical Engineering and Computer Science) Participants: Aleksandra Zögling Markuš, Prof. Dr. Zdravko Kačič, Asst. Prof. Dr. Matej Rojc The goal of this project is to create speech databases recorded over fixed and mobile telephone networks that will be used for the development and testing of real life automatic telephone speech dialogue systems. Databases will have good coverage of applications, languages, speaking styles, and different environments. These databases will contain the voices of 1000 speakers recorded over fixed and mobile phones. Currently the database contains the speach of 500 speakers from a fixed telephone network and the speach of 500 speakers from a mobile telephone network. Digital and Information Systems Laboratory EL - 5

Industrial projects

METREL-GMI Razvoj modela 10kV generatorja za merilnik izolacije (Model development of 10kV generator for insulation measurement) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Mitja Solar, Anton Vesenjak Project partners: Metrel, d. o. o. Financed by: Metrel, d. o. o.

In the project, a DC-DC converter which converted DC input voltage with range 7 to 12 V into 500V, 1000V, 2500V, 5000V and 10kV output voltage was constructed. For power supply line regulator or battery cells were used. In the case of peak power supply regulator or battery cells have to obtain the current of 8A and at least 16W of power. The output current from DC- DC converter has to be limited to 1,5 mA on each selected voltages. The exception is 10kV, where a current of 1mA is achieved.

ELTI SFN ELTI SFN pretvornik (ELTI SFN converter) Leader: Dr. Iztok Kramberger (Faculty of Electrical Engineering and Computer Science) The GPRS Remote Control is a network based application for remote monitoring and supervision of Elti digital transmitters. It provides remote monitoring and control of common digital transmitter’s parameters over the Internet network. The basic network concept is a multipoint-to-point architecture which means that the digital transmitters are connecting through the Internet to a fixed point application server that collects all data transmitted in a single database and offers a complete solution of device management from a single point of view. Devices can connect to the application server through any available network technologies that feature IP protocol as for example GPRS. While the application server requires a static internet address (IP) the digital transmitter devices can feature either static or dynamic IP addresses. This feature basically depends on their type of connection. GPRS Remote Control application running on the application server is a Web based application using a system service for connectivity with devices and a database for data storage. The basic feature of the Web application is that a standard Web browser is used as a user interface. From that point of view the digital transmitters can be controlled from any computer connected to the Internet using a standard Web browser for running the application. The Web application is multithread which means that it can run multiple users at the same time. For communication between the Web application and the Web browser the secure HTTP (HTTPS) is chosen for securing the data path while each user has to login using its user EL - 6 Digital and Information Systems Laboratory

name and password given from the system administrator. To assure proper HTTPS communication between the application server and the user’s web browser a server certificate has to be installed on the application server. For achieving an appropriate security level the data path through the established Internet connection from device to the application server is secured using 128-bit TEA encryption algorithm. At the connection establishment each of the devices is identified using a unique 32-bit device identification number while the encryption algorithm uses the configurable TEA public key for encryption of the communication channel. After successful identification of the device the system service generates a random 128-bit TEA key for data encryption of the current TCP session.

Completed research projects 2005

International project

SVAR Multilingual Automatic Speech Recognition Systems and Natural Speech Synthesis Leader: Prof. Dr. Bogomir Horvat (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik, Prof. Dr. Zdravko Kačič, Dr. Andrej Žgank, Asst. Prof. Dr. Matej Rojc Project partners: UPC Barcelona, Spain Financed by: Slovenian Research Agency

Duration: Jan. 2004 to Dec. 2005

The goal of the project is to acquire new knowledge and experiences in the fields of developing multilingual speech recognition and speech synthesis systems. The co-operation encompasses development of new algorithms of cross-lingual speech recognition and prosody modelling in multilingual speech synthesis systems. In 2005 the activities were carried out within the visits of researchers to both institutions over a duration of six weeks.

PUBLICATIONS

Tomaž Javornik, Mihael Mohorčič, Aleš Švigelj, Igor Ozimek, Gorazd Kandus, “Adaptive coding and modulation for mobile wireless access via high altitude platforms,” Wirel. pers. commun., Vol. 32, pp. 301-317, 2005. Digital and Information Systems Laboratory EL - 7

Tomaž Javornik, Srečo Plevel, Gorazd Kandus, “A recursive link adaptation algorithm for MIMO systems,” AEÜ, Int. j. electron. commun. (Print), Vol. 59, pp. 52-54, 2005.

Iztok Kramberger, “Real-time skin feature identification in a time-sequential video stream,” Opt. eng. (Bellingham. Print), Vol. 44, No. 4, pp. 047201-1-047201-10, Apr. 2005.

Dušan Prelog, Janez Stergar, Bogomir Horvat, “Simulacija obnašanja SC Sigma-Delta modulatorjev v časovni domeni z upoštevanjem neidealnosti,” Inf. MIDEM, Vol. 35, No. 2(114), pp. 77-84, Jun. 2005.

Anita Solar, Mitja Solar, Franci Štampar, “Growth dynamics and reproductive activity of annual shoots in the walnut cultivar 'Elit',” Acta agric. Slov., Vol. 85, No. 2, pp. 169-178, Nov. 2005.

Damjan Vlaj, Bojan Kotnik, Bogomir Horvat, Zdravko Kačič, “A computationally efficient mel- filter bank VAD algorithm for distributed speech recognition systems,” EURASTP j. appl. signal process., Iss. 4, pp. 487-497, 2005.

Andrej Žgank, Bogomir Horvat, Zdravko Kačič, “Data-driven generation of phonetic broad classes, based on phoneme confusion matrix similarity,” Speech commun., Vol. 47, pp. 379- 393, 2005.

Igor Jelovčan, Tomaž Javornik, Gorazd Kandus, “Performance evaluation of BWA systems with suboptimal turbo decoding,” Proceedings, EUROCON 2005 - The International Conference on "Computer as a Tool", Beograd, Serbia and Montenegro, Nov. 2005, pp. 449- 452.

Gorazd Kandus, Srečo Plevel, Tomaž Javornik, “The performance of multi-mode spatial MIMO system with imperfect CSI,” Proceedings of the WSEAS International Conferences, Tenerife, Canary Islands, Dec. 2005, pp. 478-481.

Gorazd Kandus, Aleš Švigelj, Mihael Mohorčič, “Telecommunication network over high altitude platforms,” 7th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, Niš, Serbia and Montenegro, Sep. 2005, pp. 344-347.

E. Leitgeb, S. Sheikh Muhammad, Ch. Chlestil, M. Gebhrt, Gorazd Kandus, Tomaž Javornik, “Importance of reliable optical wireless links in the evolving broadband network,” The 9th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida, USA, Jul. 2005, pp. 69-65.

E. Leitgeb, S. Sheikh Muhammad, M. Gebhrt, Ch. Chlestil, U. Birnbacher, O. Koudelka, P. Schrotter, A. Merdonig, Gorazd Kandus, “Hibrid wireless networks combining WLAN, FSO and EL - 8 Digital and Information Systems Laboratory

sattelite technology for disaster recovery,” 14th IST Mobile & Wireless Communications Summit, Dresden, Germany, Jun. 2005.

Dejan Miletić, Janez Stergar, “Testiranje vpliva rekurzivnega filtra na uspešnost razpoznavalnika govora v mobilnih terminalih,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 209-212.

S. Sheikh Muhammad, T. Kamalakis, E. Leitgeb, O. Koudelka, Gorazd Kandus, Tomaž Javornik, “Terrestrial free space optical links for high bandwidth connectivity,” 9th International Multi-topic Conference, Islamad, Pakistan, Dec. 2005, 5 pp.

Roman Novak, Mihael Mohorčič, Aleš Švigelj, Gorazd Kandus, “IP mobility architecture for high altitude platform networks,” International Workshop on High Altitude Platform Systems - WHAPS '05: in conjunction with the Mediterranean Microwaves Symposium 2005,(MMS 2005), Atene, Greece, Sep. 2005.

Srečo Plevel, Tomaž Javornik, Mihael Mohorčič, Gorazd Kandus, “Empirical propagation channel model for high altitude platform communication systems,” 23rd AIAA International Communications Satellite Systems Conference (ICSSC-2005 and 11th Ka and Broadband Communications Conference, Rim, Italy, Sep. 2005.

Janez Stergar, Caglayan Erdem, Matej Rojc, Bogomir Horvat, Zdravko Kačič, “Adapting a multilingual TTS system to slovenian language,” Advances in speech technology: proceedings, 2005, pp. 77-88.

Marko Hebar, Mitja Solar, “Subjektivno ocenjevanje proti objektivnemu ocenjevanju kvalitete digitalno kodiranih sekvenc,” Osemnajsta delavnica o telekomunikacijah, Storitev trojček, Ljubljana, Slovenia, Nov. 2005, F. 59-64.

Tomaž Dogša, Uvod v integrirana vezja, Maribor: Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Iztok Kramberger: “4th technology transfer day for Chamber of craft of Slovenia,” nanotechnology in electronics, application of nanotechnology in craft and enterprise, Maribor, Slovenia, Nov. 25, 2005. Electronic Systems Laboratory EL - 9

ELECTRONIC SYSTEMS LABORATORY

Head: Assoc. Prof. Dr. Rudolf Babič Phone: +386 2 220 72 30 E-mail: [email protected]

RESEARCH PROJECTS

Completed research projects 2005

Applied project

PASSEV Primerjalna analiza sodobnih simulatorjev elektronskih vezij (Comparison analysis of modern electronics circuits simulators) Leader: Assoc. Prof. Dr. Tomaž Dogša (Faculty of Electrical Engineering and Computer Science) Participants: Davorin Osebik, MSc; Asst. Prof. Dr. Mitja Solar; Branko Drevenšek; Asst. Prof. Dr. Bojan Jarc; Dr. Matej Šalamon Financed by: Gorenje, d. d., Program Point

Duration: Feb. 2004 to Dec. 2005

There are several types of electronic circuit simulators on the market. The goal of the research was to find the most appropriate simulator for the customer's design group. The short course was also inlcluded.

TEST1 Testiranje programske opreme (Software testing) Leader: Assoc. Prof. Dr. Tomaž Dogša (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Matej Šalamon, Branko Drevenšek EL - 10 Electronic Systems Laboratory

Financed by: Iskratel Ltd.

Duration: Jan. 2004 to Dec. 2005

Delivering a high quality software product requires the usage of effective testing tools. There are several sophisticated testing tools on the market. The goal of the research was to present the testing principles to the software developing group and prepare them for the JUnit course.

Industrial project

POINT1 Primerjalna analiza izbranih SPICE simulatorjev (Comparison of selected SPICE simulators) Leader: Assoc. Prof. Dr. Tomaž Dogša (Faculty of Electrical Engineering and Computer Science) Participants: Davorin Osebik, MSc; Dr. Matej Šalamon; Branko Drevenšek; Asst. Prof. Dr. Mitja Solar; Assoc. Prof. Dr. Rudolf Babič; Asst. Prof. Dr. Bojan Jarc Financed by: Gorenje, d. d., Program Point

Duration: Dec. 2003 to Dec. 2005

A task of a research department of Gorenje Point is to design and test electronic modules for home appliances. They want to raise the quality of their design by the use of CAE/CAD tools. The aims of our collaboration with the research department of Gorenje Point are: 1. Selection of the most suitable SPICE simulator. 2. Introducing SPICE simulator in the development cycle.

PUBLICATIONS

Davorin Osebik, Rudolf Babič, Kosta Kovačič, “Aritmetična-logična enota z zaporedno logiko za izračun utežne vsote s programirnimi vezji,” Inf. MIDEM, Vol. 35, No. 3(115), pp. 133-139, Sep. 2005.

Bojan Jarc, Rudolf Babič, “Uspešnost približne metode signalnega podprostora v robustnih sistemih avtomatskega razpoznavanja govora,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 213-216. Electronic Systems Laboratory EL - 11

Matej Šalamon, Tomaž Dogša, “Učinkovitost kaotičnih vezij pri testiranju simulatorjev električnih vezij,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 66-69.

Franc Jurkovič, “Stochastic fuzzy controller,” arXiv.org e-Print archive, 5 f.

Tomaž Dogša, Uvod v integrirana vezja, Maribor: Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia, 2005.

EL - 12 Microcomputer Systems Laboratory

MICROCOMPUTER SYSTEMS LABORATORY

Head: Prof. Dr. Zmago Brezočnik Phone: +386 2 220 72 10 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

3311-04-855022 CO ICT RR6 Center odličnosti Informacijske in komunikacijske tehnologije: Verifikacija pravilnosti delovanja komunikacijskih sistemov (CO ICT RR6 Centre of excellence Information and communication technologies: Correctness verification of communication system functioning) Leader: Prof. Dr. Zmago Brezočnik (Faculty of Electrical Engineering and Computer Science) Participants: Filip Samo Balan, MSc; Dr. Robert Meolic; Assoc. Prof. Dr. Tatjana Kapus; Prof. Dr. Zmago Brezočnik; Aleksander Vreže; Dr. Boštjan Vlaovič; Prof. Dr. Matjaž Colnarič Project partners: Iskratel Ltd., Inštitut Jožef Stefan, Institute for Economic Research Financed by: Iskratel Ltd., Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The basic objective of this research and development project is to obtain new knowledge in the area of communication system verification and to transfer existing knowledge in this area to the industry. The planned activities are divided into seven phases: analysis of the existing verification methods and tools, choice of formal verification examples, model generation, formal verification, supplementation of the tools and methods, analysis of the results and knowledge transfer. In 2005, we terminated the first three phases and started with the fourth and the fifth phase. In order to be able to formally verify a system specification by using the Microcomputer Systems Laboratory EL - 13

Spin tool, a system model in the Promela language is needed. A Promela model of the IUA (ISDN User Adaptation Layer) protocol, which is a part of the telecommunication system SI2000 software, was successfully generated. The results of this part of research are algorithms for automatic analysis of specifications written in the SDL language and a framework for C code inclusion in the system model written in Promela.

Completed research projects 2005

Industrial project

SIP-FERI-2005 Nadgradnja protokola SIP (SIP protocol extension) Leader: Dr. Boštjan Vlaovič (Faculty of Electrical Engineering and Computer Science) Participants: Peter Vicman, Aleksander Vreže, Dr. Boštjan Vlaovič, Prof. Dr. Zmago Brezočnik Project partners: Iskratel Ltd. Financed by: Iskratel Ltd.

Duration: Jan. to Dec. 2005

This project involved research activities surrounding protocol SIP and extension of the existing protocol stack for the SIP protocol. It was a continuation of the contract SIP-FERI- 2005. A detailed study of recent standards was followed by graduate extensions of the coder and decoder with the main objective to support all protocol messages and information elements. Additionally, analysis of the SIP protocol usage in the user access and its connection with different transport protocols was carried out.

MGCP-FERI-2005 Nadgradnja protokola MGCP (MGCP protocol extension) Leader: Dr. Boštjan Vlaovič (Faculty of Electrical Engineering and Computer Science) Participants: Aleksander Vreže, Prof. Dr. Zmago Brezočnik, Dr. Boštjan Vlaovič, Peter Vicman Project partners: Iskratel Ltd. Financed by: Iskratel Ltd.

Duration: Mar. 2005 EL - 14 Microcomputer Systems Laboratory

This project involved activities in the development of a coder and decoder for the MGCP protocol. The SDP protocol software was funcionality extended by the implementation of new parameters. Additionally, we provided counselling and transfer of knowledge to researchers in the company.

International project

2004-2596/002-001 EUROPEAN SUPPORT LE2-74SUB Leader: Wolfgang Schabereiter (University of Leoben) Participants: Bogdan Dugonik, MSc Project partners: AREA Science Park Consortium, CNIPMMR, LTC, TECOS, Frauenhofer IPT, First Elements, Faculty of Electrical Engineering and Computer Science, University of Leoben, Creax, European Commission Duration: Oct. 2004 to Sept. 2005

The aim of this project was to disseminate and transfer innovative results of the SUPPORT project in the form of courses to other partners in Europe. To reach this aim, the following tasks were carried out in the project: the courses were supplemented with examples of a horizontal topic (branch-independent, environment-related problem formulations); companies were trained on the SUPPORT modules in the following partner countries: Estonia, Cyprus, Sweden, Romania, Slovenia; an international certification on MATRIZ-Level 1 was reached for the SUPPORT course; a final conference on product development was held.

PUBLICATIONS

Boštjan Vlaovič, Aleksander Vreže, Zmago Brezočnik, Tatjana Kapus, “Verification of an SDL specification - a case study,” Electrotechnical Review, Vol. 72, No. 1, pp. 14-21, 2005.

Aleksander Vreže, Boštjan Vlaovič, Zmago Brezočnik, Tatjana Kapus, “Development of MGCP protocol stack for SI2000 digital switch node,” Electrotechnical Review, Vol. 72, No. 1, pp. 22- 29, 2005.

Bogdan Dugonik, “Naredimo film s Canopusom,” Monitor (Ljubl.), Vol. 15, No. 5, pp. 28, May 2005.

Robert Meolic, “Svet na dlani,” Planet PC (Kamnica), No. 10, pp. 50-52, 2005. Microcomputer Systems Laboratory EL - 15

Robert Meolic, “Svet na dlani. 2. del,” Planet PC (Kamnica), No. 11, pp. 54-55, 2005.

Robert Meolic, “Svet na dlani. 3. del,” Planet PC (Kamnica), No. 12, pp. 47-48, 2005.

Robert Meolic, “Svet na dlani. 4. del,” Planet PC (Kamnica), No. 13, pp. 52-53, 2005.

Boris Bizjak, Zmago Brezočnik, “Informacijski sistem za vodenje praks,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 360-363.

Boris Bizjak, Rok Spanžel, Zmago Brezočnik, “Stroj za zvijanje očes vzmetnega lista,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 80-83.

Matjaž Debevc, Bogdan Dugonik, Beth Meyer, Živa Peljhan, “Usability study of web-based video lecturing for people with special needs,” HCI International, 2005, 9 f.

Tatjana Kapus, “Mobile agent system specification using the temporal logic actions,” Proceedings of the IASTED International conference on software engineering, Innsbruck, Austria, Feb. 2005, pp. 319-324.

Andrej Romih, Boštjan Vlaovič, Zmago Brezočnik, “Širokopasovni nizkošumni oscilatorji spektralnega analizatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 86-89.

Boštjan Vlaovič, Aleksander Vreže, Zmago Brezočnik, Tatjana Kapus, “Toward automatic generation of Promela models from SDL specification,” ConTEL 2005: proceedings of the 8th International Conference on Telecommunications, Zagreb, Croatia, Jun. 2005, vol. 2, pp. 639- 644.

PRESENTATIONS BY THE LABORATORY MEMBERS

Zmago Brezočnik: “Research and education activities at the Faculty of electrical engineering and computer science, University of Maribor”, lecture presented at the Workshop on formal verification of telecommunication systems, November 5, 2004, Faculty of electrical engineering and computing, Zagreb, Croatia, 2004.

Robert Meolic: “An efficient representation of finite linear witnesses and counterexamples”, lecture presented at the Workshop on formal verification of telecommunication systems, November 5, 2004, Faculty of electrical engineering and computing, Zagreb, Croatia, 2004. EL - 16 Microcomputer Systems Laboratory

Boštjan Vlaovič: “Toward automatic generation of models with probes from the SDL system specification”, lecture presented at the Workshop on formal verification of telecommunication systems, November 5, 2004, Faculty of electrical engineering and computing, Zagreb, Croatia, 2004.

CONGRESSES, MEETINGS, AND COMMITTEES

Assoc. Prof. Dr. Tatjana Kapus: Section chair, international conference, The IASTED Conference Software Engineering 2005, Innsbruck, Austria, Feb. 15–17, 2005.

Dr. Boštjan Vlaovič: Organising committee member, workshop, 17th workshop on telecommunications VITEL: IP Telephony, Brdo pri Kranju, Slovenia, May 16–17, 2005.

Dr. Boštjan Vlaovič, Programme committee member, workshop, 17th Prof. Dr. Zmago Brezočnik: workshop on telecommunications VITEL: IP Telephony, Brdo pri Kranju, Slovenia, May 16–17, 2005.

Prof. Dr. Zmago Brezočnik: Programme committee member, arrangement, Hevreka!05 - Meeting point of new technologies and services, Ljubljana, Slovenia, May 24–28, 2005.

Assoc. Prof. Dr. Tatjana Kapus: Co-organiser of the Special Session on Formal Verification of Telecommunications Systems, international conference, 8th International Conference on Telecommunications ConTEL 2005, Zagreb, Croatia, June 15–17, 2005.

Prof. Dr. Zmago Brezočnik: Member of international programme board, international conference, 8th International Conference on Telecommunications ConTEL 2005, Zagreb, Croatia, June 15–17, 2005.

Assoc. Prof. Dr. Tatjana Kapus, Reviewer, international conference, 8th Aleksander Vreže, International Conference on Telecommunications Dr. Boštjan Vlaovič: ConTEL 2005, Zagreb, Croatia, June 15–17, 2005. Microcomputer Systems Laboratory EL - 17

Assoc. Prof. Dr. Tatjana Kapus, Section chair, international conference, 8th Prof. Dr. Zmago Brezočnik: International Conference on Telecommunications ConTEL 2005, Zagreb, Croatia, June 15–17, 2005.

Dr. Boštjan Vlaovič: Organising committee member, workshop, 18th workshop on telecommunications VITEL: Triple Play, Ljubljana, Slovenia, Nov. 14–15, 2005.

Dr. Boštjan Vlaovič, Programme committee member, workshop, 18th Prof. Dr. Zmago Brezočnik: workshop on telecommunications VITEL: Triple Play, Ljubljana, Slovenia, Nov. 14–15, 2005.

Assoc. Prof. Dr. Tatjana Kapus: Member of international programme board, international workshop, 2nd South-East European Workshop on Formal Methods 2005: Practical dimensions: Challenges in the business world, Ohrid, The Former Yugoslav Republic Macedonia, Nov. 18–19, 2005.

Assoc. Prof. Dr. Tatjana Kapus: Reviewer, international workshop, 2nd South-East European Workshop on Formal Methods 2005: Practical dimensions: Challenges in the business world, Ohrid, The Former Yugoslav Republic Macedonia, Nov. 18–19, 2005.

VISITS TO OTHER INSTITUTIONS

Filip Samo Balan, MSc, Participation in the Conference on DVB-T and DVB- Dr. Boštjan Vlaovič: H solutions and opportunities, meeting participation, Radenci, Slovenia, June 2, 2005.

Dr. Boštjan Vlaovič, Participation in the international symposium FM Aleksander Vreže: 2005, meeting participation, New Castle, United Kingdom, July 18–22, 2005.

Assoc. Prof. Dr. Tatjana Kapus, Preparation of an EC project proposal at ISTI, Dr. Robert Meolic: scientific collaboration, Pisa, Italy, Aug. 1, 2005.

Dr. Robert Meolic: Preparation of an EC project proposal at GETS, scientific collaboration, Florence, Italy, Aug. 10, EL - 18 Microcomputer Systems Laboratory

2005.

Dr. Boštjan Vlaovič, Participation in the SPIN 2005 workshop, meeting Aleksander Vreže: participation, San Francisco, United States, Aug. 21–27, 2005.

GUESTS AND VISITORS

Mario Kušek, Visit and realization of the Workshop on Formal Maja Matijašević, Verification of Telecommunication Systems - Part 2, Igor S. Pandžić, scientific collaboration, Feb. 3–4, 2005. Vjekoslav Sinković, Marijan Kunštić, Ignac Lovrek, Gordan Ježić (Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia):

Alessandro Fantechi Member of the commission for the defense of (University of Florence, Department of Robert Meolic's doctoral disseration; preparation of Systems and Computer Science, an EC project proposal, scientific collaboration, Florence, Italy): Sept. 16–17, 2005.

Marina Bagić Research in the area of formal methods, (Faculty of Electrical Engineering and postgraduate research work, Oct. 1 to Dec. 31, Computing, University of Zagreb, 2005. Zagreb, Croatia):

Digital Signal Processing Laboratory EL - 19

DIGITAL SIGNAL PROCESSING LABORATORY

Head: Prof. Dr. Zdravko Kačič Phone: +386 2 220 72 20 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

KORP-NET Oblikovanje slovenskega korpusnega omrežja (Development of Slovenian corpus network) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Project partners: Filozofska fakulteta, Univerza v Ljubljani, Fakulteta za družbene vede, Univerza v Ljubljani, Inštitut Jožef Stefan, Univerza na Primorskem Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The goal of the project is the development of a reference corpus, definition of criteria for its balanced structure, as well as analysis of characteristics of modern Slovenian language and communication environment. Also an analysis of state-of-the-art in the field of language resources for Slovenian language and the needs for their creation will be accomplished. Here, the basic goal will be to link together the existing language resources and to find out the priorities for further development of resources. In 2005 an analysis of needed spoken and written language resources was performed and their structure specified. EL - 20 Digital Signal Processing Laboratory

GIS-TK Center odličnosti informacijsko komunikacijske tehnologije Govorne in slikovne tehnologije v informacijskih in telekomunikacijskih sistemih (Centre of excellence of information and communication technologies Speech and image technologies in information and telecommunication systems) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Matej Rojc, Dr. Andrej Žgank, Dr. Bojan Kotnik Project partners: Iskratel Ltd., Faculty of Electrical Engineering, Univesity of Ljubljana, Alpineon, d. o. o., Faculty of Electrical Engineering and Computer Science Financed by: European Union, Iskratel Ltd., Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The main objective of the project is the development of a reference environment for evaluation of speech technology systems within the framework of the next generation voice- driven telecommunication services and development of new algorithms for robust speech processing. In 2005 a new algorithm for robust speech processing was developed, a framework for development of VoiceXML based applications was specified and the VoiceXML based autoattendant application was designed. A framework for its validation was also specified.

Industrial projects

IVR-ASR Medijski strežnik – IVR: Sistem avtomatskega razpoznavanja govora izoliranih besed (Media server – IVR: Isolated word speech recognition system) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik, Dr. Vladimir Hozjan, Dr. Tomaž Rotovnik, Dr. Andrej Žgank Project partners: Iskratel Ltd. Financed by: Iskratel Ltd., Slovenian Research Agency

The goal of the project is the development of a multi-channel isolated word speech recognition system for Slovenian language. The system will be used for development of Digital Signal Processing Laboratory EL - 21

VoiceXML applications. In 2005 a multichannel ASR engine was developed.

COM-ASR Razvoj komercialnega ASR (ASR) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Andrej Žgank, Dr. Tomaž Rotovnik, Matej Grašič, Dr. Bojan Kotnik Project partners: Iskratel Ltd. Financed by: Iskratel Ltd.

The goal of the project is the development of an ASR system to be used in speech driven teleservices developed within VoiceXML environment. In 2005 the existing platform was upgraded to meet the requirements of real acoustic environments.

A-MOD Razvoj postopkov akustičnega modeliranja v sistemu razpoznavanja govora delujočega na VOIP omrežju (Development of acoustic models for the ASR system working on VOIP networks) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik, Dr. Andrej Žgank, Dr. Tomaž Rotovnik Project partners: Iskratel Ltd. Financed by: Slovenian Research Agency

The goal of the project is to develop algorithms for robust speech processing and the analysis of acoustic models’ topologies to achieve the required speech recognition accuracy. In 2005 a new module for robust speech processing was developed using a new type of filter bank.

International projects

IHNE Inter Harmonic Noise Estimation Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik Project partners: Siemens AG Financed by: Siemens AG EL - 22 Digital Signal Processing Laboratory

The goal of the project is to develop an algorithm for interharmonic noise reduction. In 2005 a new algorithm for noise reduction was developed and evaluated using speech databases.

ECESS European Centre of Excellence for Speech Synthesis (ECESS) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Project partners: Siemens, NOKIA, Ludwig-Maximilians-Universität München, Universität Bonn, TU Dresden, Chinese Academy of Sciences, LAIP, University of Lausanne, ATR, Kyoto, CSTR, University of Edinburgh, Adam Mickiewicz University, UCL London, Middle East Technical University, Ankara, ICP, University of the Basque Country Financed by: Faculty of Electrical Engineering and Computer Science

The goal of the European Centre of Excellence for Speech Synthesis is to define recommendations for the development and validation of text-to-speech synthesis systems. The research work is carried out in the fields of definition of standard language resources, definition of multilingual text-to-speech systems and methodologies for their evaluation. In 2005 a multilingual text processing module was developed and recommendations for the development of a speech synthesis database, which would be compliant with the recommendations of the TC-STAR project, were defined.

PSA Pitch Synchronous Analysis Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik Project partners: Siemens AG Financed by: Siemens AG

The goal of the project is the development of a speech analysis algorithm using the pitch- synchronous approach and annotation of speech database. In 2005 a pitch marking algorithm was developed and a speech database was annotated. Digital Signal Processing Laboratory EL - 23

Completed research projects 2005

Research and development project

PREGO Razvoj in vrednotenje jezikovnih virov in komponent za strojno simultano prevajanje slovenskega govora (Development and evaluation of language resources and components for Slovenian speech-to-speech translation) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Matej Rojc; Darinka Verdonik, MSc Project partners: Faculty of Education, Maribor Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Duration: Oct. 2003 to Sept. 2005

The goal of the project is to develop and evaluate the language resources for speech-to- speech translation for Slovenian language. The developed resources will be compliant with the international recommendations and standards. After completion they will be available to the potential users through the European language resources association (ELRA) in Paris. In the year 2005 the development of phonetic and morphologic lexicons was completed and the lexicons were validated at the international validation centre SPEX, in the Nietherland.

ISSJ Integrirani sistem za slovenski govor s poudarkom na razvoju in uporabi baz izgovarjav (Integrated system for Slovenian language with emphasis on development and utilisation of speech) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Project partners: Amebis, Institut "Jozef Stefan" Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Duration: Oct. 2003 to Sept. 2005

The goal of the project is to build up a speech synthesis and recognition system for Slovenian language. The system will contain the core that will enable selection of different modules of speech synthesis and recognition components. In system configuration for particular EL - 24 Digital Signal Processing Laboratory

application the working system can use different modules for speech synthesis and speech recognition that will be selected out of the pre-defined set of modules for both components. In 2005 an isolated word recognition system was developed and integrated in a dialogue system that enables voice information retrieval in various domains.

BN-SI Izgradnja baze “Broadcast News” za slovenski jezik (Development of Broadcast News speech database for Slovenian Language) Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Andrej Žgank; Darinka Verdonik, MSc; Aleksandra Zögling Markuš Project partners: RTV Slovenija Financed by: RTV Slovenija, Faculty of Electrical Engineering and Computer Science

Duration: Jan. 2003 to Dec. 2005

The goal of the project is the development of a speech database that will contain speech material of broadcasts from national television RTV Slovenia. In 2005 the development of database was concluded. The database consists of 35 hours of speech. The whole database was manually annotated in accordance with recommendations of the Broadcast News project consortium. The text corpus containing the text from the iNEWS information system was also completed.

International project

COST Action 278 Spoken Language Interaction in Telecommunication Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Financed by: Slovenian Research Agency, European Union

Duration: Jan. 2000 to Apr. 2005

The main objective of this project is to create knowledge in several problem areas of spoken language interaction in telecommunications, in order to achieve communicative interfaces that provide a natural human-computer interaction through more cognitive, intuitive and robust interfaces, whether monolingual, multilingual or multimodal. The work encompasses research on speech and dialogue processing in multimodal communication interfaces, issues Digital Signal Processing Laboratory EL - 25

related to robustness and multilinguality, human-computer dialogue theories, and models and systems as well as associated tools for the establishment of interactive systems. It also involves the evaluation of telecommunication applications in which spoken language is the only or one of many types of input or output modalities. In the year 2005 the research team has been working in project groups Broadcast News (BN) and multilingual speech recognition, developing pan European BN database, and coordinated the SIG MASPER on multilingual and cross-lingual speech recognition.

SVAR Multilingual Automatic Speech Recognition Systems and Natural Speech Synthesis Leader: Prof. Dr. Bogomir Horvat (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik, Prof. Dr. Zdravko Kačič, Dr. Andrej Žgank, Asst. Prof. Dr. Matej Rojc Project partners: UPC Barcelona, Spain Financed by: Slovenian Research Agency

Duration: Jan. 2004 to Dec. 2005

The goal of the project is to acquire new knowledge and experiences in the fields of development of multilingual speech recognition and speech synthesis systems. The co- operation encompasses development of new algorithms of cross-lingual speech recognition and prosody modelling in multilingual speech synthesis systems. In 2005 development and evaluation of enhanced intonation modelling algorithms using TILT intonation models was carried out within the visits of researchers to both institutions over a duration of three weeks.

LC-STAR Lexica and Corpora for Speech to Speech Translation Components Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Project partners: UPC, RWTH, IBM, NSC, NOKIA, Siemens AG Financed by: Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

Duration: Jan. 2003 to Dec. 2005

LC-STAR project is a project focusing on creating language resources (LR) for transferring Speech-to-Speech Translation (SST) components and thus improving human-to-human and man-machine communication in multilingual environments. The goal of the project is to create lexica for 13 languages and text corpora for 3 languages and to create a demonstrator EL - 26 Digital Signal Processing Laboratory

translating within 3 languages. In 2005 the development of parallel corpora and recording of speech database TURDIS was concluded. The segmentation and transcription of the complete database was performed.

ROTES Robust Speech Processing in Telecommunication Systems Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Bojan Kotnik, Damjan Vlaj, Dr. Vladimir Hozjan, Asst. Prof. Dr. Matej Rojc, Dr. Andrej Žgank Project partners: Graz University of Technology Financed by: Slovenian Research Agency

Duration: Jan. 2004 to Dec. 2005

In 2005, co-operation was conducted in the field of speech communication and spatial audio communication applications within the framework of multimodal user interfaces for mobile and nomadic users and ubiquitous communication services.

BN-SIPR Cooperation in the development of a Broadcast News recognition system for the Slovenian and the Portuguese languages Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Vladimir Hozjan, Dr. Andrej Žgank, Damjan Vlaj, Asst. Prof. Dr. Matej Rojc, Dr. Bojan Kotnik, Dr. Tomaž Rotovnik Project partners: University of Lisbon, Portugal Financed by: Slovenian Research Agency

Duration: Jan. 2004 to Dec. 2005

The work encompasses co-operation in the development of speech segmentation, recognition, and the automatic indexing of Broadcast News speech databases for the Slovenian and Portuguese languages. In 2005 the language-dependent aspects of the problems were analysed and compared and search algorithms for continuous speech recognition were developed. In 2005 the activities were carried out within the visits of researchers to both institutions over a duration of two weeks. Digital Signal Processing Laboratory EL - 27

PUBLICATIONS

Damjan Vlaj, Bojan Kotnik, Bogomir Horvat, Zdravko Kačič, “A computationally efficient mel- filter bank VAD algorithm for distributed speech recognition systems,” EURASTP j. appl. signal process., Iss. 4, pp. 487-497, 2005.

Andrej Žgank, Bogomir Horvat, Zdravko Kačič, “Data-driven generation of phonetic broad classes, based on phoneme confusion matrix similarity,” Speech commun., Vol. 47, pp. 379- 393, 2005.

Andrej Žgank, Zdravko Kačič, “Primerjava treh tipov akustičnih osnovnih enot razpoznavalnika slovenskega govora,” Electrotechnical Review, Vol. 72, No. 5, pp. 273-278, 2005.

Bojan Kotnik, “Feature extraction procedure with adaptive topology of the wavelet packet decomposition tree and time-frequency plane speech detection procedure,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 201-215.

Matej Rojc, “Recent progress in TTS system PLATTOS,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 91-98.

Matej Rojc, Pablo Daniel Agüero, Antonio Bonafonte, Zdravko Kačič, “Training the Tilt intonation model using the JEMA methodology,” Interspeech Lisboa 2005: proceedings of the 9th European conference on speech communication and technology, Lisabon, Portugal, Sep. 2005, pp. 3273-3276.

Tomaž Rotovnik, “Issues on large vocabulary continuous speech recognition with subwords units,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 141-151.

Janez Stergar, Caglayan Erdem, Matej Rojc, Bogomir Horvat, Zdravko Kačič, “Adapting a multilingual TTS system to slovenian language,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 77-88.

Damjan Vlaj, “Development of the VAD algorithms based on Gaussian Mixture Models,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 223-229.

Andrej Žgank, “Slovenian speech recogniser based on grapheme units,” Advances in speech technology: proceedings, Maribor, Slovenia, pp. 111-117.

Andrej Žgank, Zdravko Kačič, Frank Diehl, Jozef Juhar, Slavomir Lihan, Klara Vicsi, György Szaszák, “Graphemes as basic units for crosslingual speech recognition,” ASIDE2005: COST278 Final Workshop and ISCA Tutorial and Research Workshop (ITRW) on "Applied EL - 28 Digital Signal Processing Laboratory

spoken language interaction in distributed environments", Aalborg University, Denmark, Nov. 2005.

Andrej Žgank, Darinka Verdonik, Aleksandra Zögling Markuš, Zdravko Kačič, “BNSI Slovenian broadcast news database - speech and text corpus,” Interspeech Lisboa 2005: proceedings of the 9th European conference on speech communication and technology, Lisabon, Portugal, Sep. 2005, pp. 1537-1540.

Janez Žibert, et al. (15 avtorjev), “The COST278 broadcast news segmentation and speaker clustering evaluation - overview, methodology, systems, results,” Interspeech Lisboa 2005: proceedings of the 9th European conference on speech communication and technology, Lisabon, Portugal, Sep. 2005, pp. 629-632.

Mirjam Sepesy Maučec, Zdravko Kačič, “Izzivi strojnega prevajanja slovenskega jezika,” , 3. znanstvena konferenca PAZU "Razvojne strategije Pomurja", Murska Sobota, Slovenia, Dec. 2005, pp. 6-7.

PRESENTATIONS BY THE LABORATORY MEMBERS

Zdravko Kačič: “ICT systems,” lecture on the international business and educational event HEVREKA 05, Ljubljana, Slovenia, May 24, 2005.

Matej Rojc, Tomaž Rotovnik, Andrej Žgank, Vladimir Hozjan, Zdravko Kačič, Bojan Kotnik: “Speech Driven Services in Telecommunication,” presentation on the international business and educational event HEVREKA 05, Ljubljana, Slovenia, May 24, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Dr. Andrej Žgank: Programme committee member, conference, 9th biennial conference of the International Speech Communication, Lizbona, Portugal, Sept. 4–8, 2005.

Prof. Dr. Zdravko Kačič: Advances in Speech Technology AST 2005, workshop, organisation and implementation, Maribor, Slovenia, June 30 to July 1, 2005.

Prof. Dr. Zdravko Kačič: European Centre of Excellence for Speech Synthesis, meeting, organisation and implementation, Maribor, Slovenia, June 30, 2005. Digital Signal Processing Laboratory EL - 29

Prof. Dr. Zdravko Kačič: 6th framework program: Personalized communication with voices and faces (FAVIA), meeting, organisation and implementation, Maribor, Slovenia, June 29, 2005.

Prof. Dr. Zdravko Kačič: Reviewer for International Journal of Speech Technology, associate editor.

VISITS TO OTHER INSTITUTIONS

Dr. Andrej Žgank: Participation in the 10th Management Committee Meeting COST 278, meeting participation, Granada, Spain, Jan. 16–18, 2005.

Prof. Dr. Zdravko Kačič: Meeting participation on ECESS Meeting, meeting participation, Munich, Germany, Mar. 10–11, 2005.

Darinka Verdonik, MSc: Participation at the EuroForum - European Forum for Early Career Researchers, meeting participation, Otočec, Slovenia, May 6–7, 2005.

Prof. Dr. Zdravko Kačič: Lectur on the international business and educational event HEVREKA 05, research work, Ljubljana, Slovenia, May 24–28, 2005.

Prof. Dr. Zdravko Kačič, Participation at the Interspeech 2005, meeting Asst. Prof. Dr. Matej Rojc, participation, Lisbon, Portugal, Sept. 4–8, 2005. Dr. Andrej Žgank:

Dr. Andrej Žgank: Participation at the 11th Management Committee Meeting COST 278, project meeting participation, Lisbon, Portugal, Sept. 9, 2005.

Asst. Prof. Dr. Matej Rojc: Meeting participation at the ECESS Meeting, project meeting participation, Krakow, Poland, Sept. 22–24, 2005.

Dr. Tomaž Rotovnik: Reesearch work, research work, Lisbon, Portugal, Sept. 25 to Oct. 1, 2005. EL - 30 Digital Signal Processing Laboratory

Darinka Verdonik, MSc: Participation in the Slavistični kongres 2005, meeting participation, Ljubljana, Slovenia, Oct. 6–8, 2005.

Dr. Andrej Žgank: Participation at the COST 278 12th Management Committee Meeting, project meeting participation, Aalborg, Denmark, Nov. 11, 2005.

Darinka Verdonik, MSc: Participation at the Symposium Obdobja, meeting participation, Ljubljana, Slovenia, Nov. 17–19, 2005.

GUESTS AND VISITORS

Pablo Aguera, Research work, research work, June 27 to July 1, Frank Diehl, 2005. Antonio Bonafonte (UPC Barcelona, Barcelona, Spain):

Harald Höege Co-operation within European Centre of Excelence, (Siemens AG, Munich, Germany), research work, June 29 to May 29, 2005. Oliver Jokisch (TU Dresden, Dresden, Germany), Rüdiger Hoffmann (TU Dresden, Dresden, Germany):

Hugo Meineda Research work, research work, Oct. 23–29, 2005. (INESC University of Lisbon, Lisbon, Portugal):

Institute of Power Engineering PE - 1

INSTITUTE OF POWER ENGINEERING

Head: Prof. Dr. Ivan Zagradišnik Phone: +386 2 220 70 40 E-mail: [email protected] URL: http://www.me.feri.uni-mb.si/

The research work of the Institute of Power Engineering is divided into three main areas: electromagnetic devices; production, transmission and distribution of electrical energy; and power system control. The research on electromagnetic devices is focused on numerical methods. The research on electrical energy deals mainly with optimisation processes, reliability, and the quality of electrical energy. Modernising control of power systems is the subject of the third topic.

The institute of Power Engineering co-operates with many universities and institutes abroad: University Zagreb, Faculty of Electrical Engineering and Computer Science - Croatia; University J. J. Strossmayer Osijek, Faculty of Electrical Engineering - Croatia; University Kragujevac - Serbia and Montenegro, University Sts. Cyril&Methodious Skopje, Faculty of Electrical Engineering - Macedonia; University Tuzla, Faculty of Electrical Engineering - Bosnia and Hercegovina, Technische Universität Graz, Elektrotechnische fakultet - Austria; Universität Johannes Kepler Linz, Institut für elektrische Maschinen und Regelungstechnik - Austria; Technical University of Budapest, Institute for electric machines - Hungary; Universität Paderboren - Germany; University D'Artois - France; Katolieke Universiteit Leuven, Institute for electric machines and drives - Belgium; Technische Universität Achen - Germany; Northeastern University Boston - USA; Association of EU Universities Dortmund - Germany; Physikalisch-Technische Bundesanstalt Braunschweig - Germany; Institute of Electrical Engineering Warsava - Polska; University Lodz, PE - 2 Institute of Power Engineering

Institute of Mechatronics and Information Systems - Polska; Instituto Nacionale Galileo Ferraris Torino - Italia; Doshisha University Kyoto - Japon.

Institute of Power Engineering Head: Prof. Dr. Ivan Zagradišnik

Electrical Power Machines Engineering Laboratory Laboratory Head: Head: Prof. Dr. Ivan Zagradišnik Assoc. Prof. Dr. Jože Voršič

Electromechanical Fundamentals and Theory Systems Control of Electrotechnics Laboratory Laboratory Head: Head: Prof. Dr. Bojan Grčar Prof. Dr. Igor Tičar

Applied Electromagnetics Laboratory Head: Prof. Dr. Mladen Trlep

Institute of Power Engineering PE - 3

Electrical Machines Laboratory

Head: Prof. Dr. Ivan Zagradišnik Employees: Bojan Slemnik, MSc; Florijan Leskovar, Eng.; Miralem Hadžiselimović, BSc

Power Engineering Laboratory

Head: Assoc. Prof. Dr. Jože Voršič Employees: Assoc. Prof. Dr. Gorazd Štumberger; Assoc. Prof. Dr. Jože Pihler; Andrej Hanžič MSc; Janez Ribič, BSc; Marjan Stegne, BSc; Jurček Voh; Andrej Korak, BSc

Electromechanical System Control Laboratory

Head: Prof. Dr. Bojan Grčar Employees: Prof. Dr. Drago Dolinar; Asst. Prof. Dr. Jožef Ritonja; Asst. Prof. Dr. Boštjan Polajžer; Matej Toman, BSc; Zlatko Strelec

Fundamentals and Theory of Electrotechnics Laboratory

Head: Prof. Dr. Igor Tičar Employees: Andrej Orgulan, MSc; Peter Kitak, BSc; Andrej Stermecki, BSc

Applied Electromagnetics Laboratory

Head: Prof. Dr. Mladen Trlep Employees: Prof. Dr. Anton Hamler; Asst. Prof. Dr. Marko Jesenik; Asst. Prof. Dr. Bojan Štumberger; Viktor Goričan, BSc; Gorazd Hrovat, BSc; Anton Habjanič, BSc; Matjaž Gaber, BSc PE - 4 Electrical Machines Laboratory

ELECTRICAL MACHINES LABORATORY

Head: Prof. Dr. Ivan Zagradišnik Phone: +386 2 220 70 40 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Industrial projects

LABES-BV-02_2003 Analiza segrevanj eksplozijsko varnih motorjev (Heating analysis of explosion proof electric motors) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Miralem Hadžiselimovič; Tine Marčič; Matej Gajzer, MSc Financed by: Bartec Varnost, d. o. o.

For the company Bartec Varnost Zagorje we have measured, analysed and calculated three- phase explosive safety electric motors.

LABES-DAN-01- Analiza kompresorskih motorjev z različnimi kvalitetami 2004 pločevine (Analysis of different electrical steels qualities for use in compressor motors) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Miralem Hadžiselimovič, Tine Marčič Financed by: DANFOSS COMPRESSORS D.O.O.

For the company Danfoss Črnomelj we have done an analyses of the influence of different magnetic high permeability steel on the characteristics of single-phase motors with a Electrical Machines Laboratory PE - 5

permanent capacitor in the auxiliary phase, that are used as piston compressors in refrigerators.

LABES-IA-01-2003 Meritve ležajnih tokov (Measurements of bearing currents) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Željko Hederić, Miralem Hadžiselimovič, Stjepan Štefanko Project partners: Iskra Avtoelektrika, d. d. Financed by: Iskra Avtoelektrika, d. d.

For the company Iskra Avtoelektrika research on shaft and bearings currents (by Rogowsky coil) has been done in the three-phase induction motors supplied by the controller. The motors are used for drive-on electric forklifts in the NACO Company USA. Results of the motors measurements without a controller improved the bearings and shaft currents, but they are not big enough to damage the bearings of the motor. Research of the bearings and shaft currents on the motors supplied by the controller are unfinished as yet.

LABES-IA-01-2005 Razvoj elektromagnetne zavore za zaviranje pogonskih motorjev (Development of a DC electromagnetic brake for electric motors’ braking) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Peter Virtič; Miralem Hadžiselimovič; Bojan Slemnik, MSc Project partners: Elkostroj Financed by: Elkostroj

On behalf of the Elkostroj company we have developed an electromagnetic brake to build into induction motors. A special request of the project for this brake was a narrow dimension and bigger attraction force in comparison with the standard brake. The results of our measurements have provided appropriate data for the prototype and agreement was confirmed with the numerical solution calculated by CAD Ansys.

AE BS-2 Prenos električne moči v rotirajoče telo na osnovi koncepta generatorja na pogonski gredi (Transfer of electric power in the rotating body on the basis of electrical generator mounted on the drive shaft) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering PE - 6 Electrical Machines Laboratory

and Computer Science) Participants: Assoc. Prof. Dr. Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Mladen Trlep, Prof. Dr. Anton Hamler, Asst. Prof. Dr. Marko Jesenik, Viktor Goričan Project partners: Tehnološki center za električne stroje, KolektorGroup, d. o. o. Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

The object of the work is a feasibility study into the transfer of electric power in the rotating body on the basis of an electrical generator mounted on the drive shaft. Different magnetic structures of electric generator were analyzed in accordance with the restrictions and demands of a power electronic converter which will be mounted on the generator terminals.

Completed research projects 2005

Industrial project

LABES-KO-01-2005 Razvoj in meritve dveh trifaznih asinhronskih motorjev v protieksplozijski zaščiti napajanih s frekvenčnim pretvornikom (Development and measurements of two three-phase induction motors in explosion proof protection supplied by frequency converter) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Tine Marčič; Dr. Franci Lahajnar; Miralem Hadžiselimovič; Matej Gajzer, MSc Project partners: KolektorGroup, d. o. o., Tehnološki center za električne stroje Financed by: KolektorGroup, d. o. o.

Duration: Mar. to Sept. 2005

For the Kolektor Group d. o. o. Idrija, we have developed two three-phase induction motors in explosion proof protection with rated voltage 163 V. The first motor is designed for pump- drive with operation speeds from 900 to 3600 rpm and the second one is designed for mixer- drive with operation speeds from 3000 to 9000 rpm. Comparison of measurements and CAD calculations have shown excellent agreement. Electrical Machines Laboratory PE - 7

LABES-BV-01-2003 Avtomatizirano merilno mesto za preiskušanje rotacijskih električnih strojev (Automatized experimental setup for measuring of rotational electric machines) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Matej Gajzer, MSc; Miralem Hadžiselimovič Project partners: TELEM, d. o. o.., Technologycal center for electric machines Financed by: Bartec Varnost, d. o. o.

Duration: Jan. 2003 to Sept. 2005

For the company Bartec Varnost Zagorje, we have collaborated on a project measurement setup and building computer control type test device for the explosive safety of electric motors. In the project we have used the solutions of our research lab for measurements of the electric motors.

LABES-IA-02-2003 Razvoj elektromagnetne zavore za zaviranje pogonskih motorjev na viličarju (Development of the DC electromagnetic brake for electric forklifts breaking) Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science) Participants: Miralem Hadžiselimovič; Bojan Slemnik, MSc; Peter Virtič Project partners: Elkostroj Financed by: Iskra Avtoelektrika, d. d.

Duration: Feb. 2003 to May 2005

For the company Iskra Avtoelektrika, we have developed an electromagnetic brake for building on the induction motors of electric forklifts. The special request of the project for this brake was a narrowed dimension and bigger attraction force in comparison with a standard brake. The results of measurements have given appropriate data for the prototype and agreement with the numerical solution calculated by CAD Ansys was conformed. The two brakes are now being tested in the Naco company USA. PE - 8 Electrical Machines Laboratory

PUBLICATIONS

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modeling of permanent magnet synchronous motor in d-q coordinates,” Prz. Elektrotech., Vol. 81, No. 12, pp. 38-40, 2005.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Prz. Elektrotech., Vol. 81, No. 12, pp. 104-106, 2005.

Miralem Hadžiselimović, Tine Marčič, Matej Gajzer, Bojan Štumberger, Ivan Zagradišnik, “Uporaba motorja v protieksplozijski zaščiti za omrežji 400V/50Hz in 460V/60Hz,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 366-369.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Sposobnost obratovanja asinhronskega motorja z navitim rotorjem v funkciji sinhronskega generatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 357-361.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Determination of magnetically nonlinear characteristics of permanent-magnet synchronous motor with exterior rotor,” Proceedings, XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Meritev magnetno nelinearnih karakteristik enosmerne elektromagnetne zavore,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 421-424.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, “Vpliv navitja na karakteristike enofaznega asinhronskega motorja z obratovalnim kondenzatorjem in zunanjim rotorjem,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 362-365.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, Bojan Štumberger, “A study of magnetic flux density harmonics in a three phase squirrel-cage induction machine at ideal no- load condition,” Proceedings, XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005. Electrical Machines Laboratory PE - 9

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM based design of an induction motor's part winding to reduce the starting current,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 1, pp. I-136 - I- 173.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Anton Hamler, Mladen Trlep, “Permanent magnet synchronous motor with exterior-rotor: distributed or concentrated windings - motor performance,” Proceedings, XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Igor Tičar, Andrej Stermecki, Ivan Zagradišnik, “Numerical analysis of the brushless motor magnetic field and torque,” Computer engineering in applied electromagnetism, pp. 221-226.

Peter Virtič, Bojan Štumberger, Ivan Zagradišnik, “Attractive electromagnetic force in DC electromagnetic brake; comparison between measured and calculated results,” Proceedings, XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modelling of permanent magnet synchronous motor in d-q coordinates,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 81-82.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 175-176.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, “High performance permanent magnet brushless motors with balanced concentrated windings and similar slot and pole numbers,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 229.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magneti synchronous motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 228.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of synchronous reluctance motor and PE - 10 Electrical Machines Laboratory

induction motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 232.

Peter Virtič, Bojan Štumberger, Ivan Zagradišnik, “Core materials for DC electromagnetic brakes; influence on attractive electromagnetic force,” abstract, F. 1-2.

Ivan Zagradišnik, Tine Marčič, Miralem Hadžiselimović, “Analysis of single-phase induction motor with permanent split capacitor and closed rotor slots,” abstract, F. 19-20.

Ivan Zagradišnik, Bojan Slemnik, Električni rotacijski stroji, Maribor: Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia, 2005.

Bojan Slemnik, Ivan Zagradišnik, Elektromehanski pretvorniki: zbirka rešenih nalog, Maribor: Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia, 2005, reprint 2004.

VISITS TO OTHER INSTITUTIONS

Miralem Hadžiselimovič, Participation at scientific meeting of Polish society Asst. Prof. Dr. Bojan Štumberger: of applied electromagnetics, seminar participation, Ciechocinek, Poland, Sept. 1–3, 2005.

Miralem Hadžiselimovič: Visit of the international conference ISEF 2005, meeting participation, Baiona, Spain, Sept. 15–17, 2005.

GUESTS AND VISITORS

Željko Hederić Measurements and calculations of bearing currents (Elektrotehnički fakultet Osijek, Osijek, in three phase induction motors, postgraduate Croatia): research work, Oct. 1 to Dec. 31, 2005.

Power Engineering Laboratory PE - 11

POWER ENGINEERING LABORATORY

Head: Prof. Dr. Jože Voršič Phone: +386 2 220 70 50 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

L2-6385-0796 Raziskave vplivov na povečanje izklopne zmogljivosti plinskega odvodnika (Influence research on increasing disconnection ability of gas arrester) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Jože Pihler; Andrej Hanžič, MSc; Marjan Stegne Project partners: Iskra Zaščite Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Iskra Zaščite

Work deals with modern application of overvoltage protection in low voltage power networks. Basic intent of the work is analysing protection devices composed of several protection elements. These are so-called combined overvoltage protections or. protection modules composed of resistors, varistors and gas arresters. The optimal and efficient operation of a protection device can be obtained with an adequate combination and dimensioning of separate protection elements. In the year 2005, we developed a mathematical model of a gas arrester in PS-Cad program tool. In areas of the turn-on and off, the electrical arc model is based on the Toepler equation and in the burning area of the electrical arc model, it is based on the Mayr equation. In the model, lightning impulse voltage and normal sinus voltage were used as voltage sources. PE - 12 Power Engineering Laboratory

L2-7560-1792 Načrtovanje in vodenje naprednega sistema za točkasto varjenje (Design and control of an advanced spot welding system) Leader: Assoc. Prof. Dr. Gorazd Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Zlatko Strelec; Dr. Oto Težak; Matej Gajzer, MSc; Tine Marčič; Peter Virtič; Matej Toman; Prof. Dr. Drago Dolinar; Dr. Boštjan Polajžer; Andrej Hanžič, MSc Project partners: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Tehnološki center za električne stroje Financed by: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Slovenian Research Agency

The system of spot welding uses a complex electromagnetic device composed of numerous elements. Some elements dominantly influence the reliability of operation under prescribed specifications, which consequently means that there exists the possibility of considerably increasing the system’s performance. The existing transformer is oversized. The design of an advanced adaptive control of power supply inverter will enable compensation of the flux density DC component in the transformer iron core, which will reduce the dimensions of the transformer considerably. The goal of the project is to find an optimal transformer design and active control algorithm, which should, together, lead to transformer reduction with the prevention of overload conditions on the primary, at the same time. To reach this goal, analytical and experimental methods will be employed. The optimal transformer design and appropriate control of power supply inverter will be determined by differential evolution – a stochastic search algorithm.

Research and development projects

VNDSVS Vetrne naprave z difuzorjem v SV Sloveniji (Wind devices with diffusor in NE Slovenia) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Janez Ribič; Andrej Korak; Andrej Hanžič, MSc; Vincenc Butala Project partners: Faculty of Mechanical Engineering, University of Ljubljana, Faculty of Electrical Engineering, Univesity of Ljubljana Financed by: Grozd Ure in OVE Power Engineering Laboratory PE - 13

The basis for the project is commercialisation of an already developed product. The technical development in the field of wind turbines goes two directions. The first direction represents so-called conventional wind turbines – with three-bladed rotors. The other direction represent diffuser augmented wind turbines, where the rotor is surrounded by a coat in the form of a widened tube. The latter type of wind turbine has much better efficiency at low wind speed, compared to the conventional types of wind turbines. On the basis of computations the first Slovenian prototype for a diffuser augmented wind turbine will be made. The prototype of the wind turbine will be made on the basis of project documentation and SWOT analysis of the product. The prototype will be used for measurements of electrical parameters of the wind turbine in various operating regimes and for changing electrical load. The project enables the largest Slovenian electricity generator HSE to enter the area of planning large wind turbines and, eventually, to sell these technologies on the energy market in a separate consortium.

Solarna elektrarna Elektrarna na solarno energijo (Solar Power Plant) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Kristijan Brecl; Marko Topič; Janez Krč; Jurček Voh; Andrej Hanžič, MSc Project partners: Faculty of Electrical Engineering, Univesity of Ljubljana, Faculty of Mechanical Engineering, University of Ljubljana Financed by: Grozd Ure in OVE

The storing of electricity has presented a problem since the very beginning of electrification and electricity generation. Therefore, electricity should be used immediately, without intermediate storage. In addition to this, PV systems without electricity storage cannot be sufficient for a normal supply to consumers, especially due to the low efficiency of solar cells and daily and annual variations in solar insulation. The problem of storage and supply of electricity can be solved with a parallel connection of the system with the electric network. In this way the use of storage batteries is avoided, which represents an advantage in the price of PV system, its life expectancy and in reducing environmental pollution. The work will be done in the field of following the PV cell's characteristics at various levels of insolation and adapting the load, all with the purpose of exploiting the available solar radiation to the maximum possible extent. To achieve this it would be necessary to change the load's resistance, which is of course impossible, since it is given (e.g. DA/AC converter, storage battery). The problem can be solved by an additional DC converter with a variable conduction factor. This measure can lead to a 200% to 300% increase of efficiency at low level of PV cell's irradiation. Since DC/AC converters with integrated adaptation of voltage to load are not yet commercially available, the task of our project team is to develop a prototype of such a converter. The basic objective is to erect a small PV power plant for the purpose of supplying electrical consumers. Since the system will be controlled and the acquisition of measurement PE - 14 Power Engineering Laboratory

data will be performed through intranet connection of the controller and an analogue process unit for data acquisition, it will enable long-term monitoring of PV system's operation for the purpose of further research work and parallel operation of the system within a low voltage electric network.

Industrial projects

ŠIPPHED Študija izvedljivosti povečanja pretokov v HE Dravograd (Study of feasibility of flow increase into hydroelectric power station Dravograd) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Jurček Voh; Andrej Korak; Assoc. Prof. Dr. Gorazd Štumberger; Marjan Stegne; Sašo Kreslin; Janez Ribič; Roman Kolenko; Andrej Hanžič, MSc; Darko Koritnik, MSc; Assoc. Prof. Dr. Jože Pihler Project partners: Dravske elektrarne Maribor, d. o. o. Financed by: Dravske elektrarne Maribor, d. o. o.

Energy storage is important for power stations which ensure electricity in a band (thermal power stations and nuclear power stations) so that they can operate with maximum efficiency. For many decades pumped storage hydroelectric power stations have mainly been used for storing large amounts of energy, which can also be expected in the near future. Pumped storage hydroelectric power stations were first used only for energy storage and covering peaks, whereas now they have become an important and comprehensive controlling tool. What also needs to be taken into consideration when connecting these energy converters, apart from technical measures and restrictions, are their operational features and the system’s response to them, as well as the existing technical regulation in our country. The research is focused on the power connection of the pumped storage hydroelectric power station Kozjak into the electrical power system. The study covers an analysis of the suggested solutions concerning connection, choosing the most suitable connection given the location, the effect on the environment and the analysis of the suggested solutions in the light of reliability. In so doing, it bases itself on the statistics of the losses of similar transformers and overhead lines set in a similar environment (snow, wind, isoceraunical level) and on the data of the supplier of the varspeed generator. The research is to provide an answer as to whether it is justifiable to set up a parallel overhead line in the area of Zg. Duplek or is it better to upgrade the existing line into a multiple circuit line; how strong is the existing bracing system of the towers; is it possible to strengthen the towers or is it necessary to build new ones in the common course line. It might be more appropriate to open a system towards Kainachtal and build a double circuit line Power Engineering Laboratory PE - 15

Hrenca – Kozjak; how reliable is the heavy line along the valley of the Drava and if it is even capable of transferring the desired amount of energy.

AUNSNNZM Analiza upadov napetosti na srednje napetostnem nivoju zaradi motenj v 110 kV omrežju in SN omrežju (Voltage DIP analysis at the medium voltage level due to disturbance in 110 kV system and MV system) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Gorazd Štumberger; Marjan Stegne; Janez Ribič; Assoc. Prof. Dr. Jože Pihler; Darko Koritnik, MSc; Andrej Korak; Andrej Hanžič, MSc; Klemen Deželak; Jurček Voh Project partners: Gospodarsko interesno združenje distribucije električne energije Financed by: Elektro Gorenjska, javno podjetje za distribucijo električne energije, d. d., Elektro Maribor, d. o. o., Elektro Ljubljana, d. d., ELEKTRO PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d., ELEKTRO CELJE, Javno podjetje za distribucijo električne energije

The problem of electricity quality is an urgent matter for companies distributing electricity due to compensations, which will gradually be introduced in this area. In this respect, the impact of disturbance, which appears in 110 kV systems due to incidents (malfunctions, switching manipulations, as well as openings and closings of larger users), on voltage dips and electricity quality in MV systems is of crucial importance for companies distributing electricity. The above mentioned incidents in 110 kV systems may result in disturbance and power failure of sensitive users in MV systems, which could cause great damage. Within the framework of the study we carried out an analysis of the legislation within this field and an analysis of the current condition in the world. A dynamic model of connected systems was constructed, enabling an analysis of the impact of disturbance (incidents) arisen in 110 kV systems on voltage dips and electricity quality in MV systems from a physical and legislative viewpoint. Within the framework of the study, in cooperation with a fund provider in each distributional company’s system, one distribution transformer substation (DTS) was selected, for which an analysis of the impact of conventional incidents at a conventional point of the 110 kV system on the medium voltage system was carried out. The results of the analysis showed sensitivity of the selected DTS to incidents in the 110 kV system and suitability of the DTS for the connection of highly sensitive users. PE - 16 Power Engineering Laboratory

VMEJRO Vključevanje majhnih elektrarn v javna razdeljevalna omrežja (Integration of small power stations into public distributional systems) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Viljem Muzek; Andrej Hanžič, MSc; Andrej Korak; Darko Koritnik, MSc; Assoc. Prof. Dr. Jože Pihler; Silvo Ropoša; Janez Ribič; Assoc. Prof. Dr. Gorazd Štumberger; Jurček Voh; Marjan Stegne Project partners: Gospodarsko interesno združenje distribucije električne energije Financed by: Elektro Maribor, d. o. o., ELEKTRO PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d., Elektro Ljubljana, d. d., ELEKTRO CELJE, Javno podjetje za distribucijo električne energije, Elektro Gorenjska, javno podjetje za distribucijo električne energije, d. d.

Both, the need for power supply and accessibility of technologies enable the usage of small and micro energy converters in public systems on a larger scale. Their usage and integration into public distributional companies has, at the level of standardization, already been examined to a certain extent. There has been no concrete guidance for the distributional companies at the level of regulations in this area so far. This concerns low power generators which principally use gas, hydro potential, and solar and wind energies as energy products. Together with technical measures and restrictions, in the process of connecting these energy converters, there is a need for considering their operational features and the reaction of the system to the converters, as well as the existing technical regulation in our country. The study discusses the starting points for the connection and parallel operation of micro energy converters with public low voltage distribution systems. The starting points are designed on the basis of solving cases of integration and the operation of such devices in Europe, in some cases also in the United States, Canada, Japan and (rarely) in Slovenia.

VČHKES Vključitev črpalne hidroelektrarne Kozjak v elektroenergetski sistem (Integration of pumped storage hydroelectric power station Kozjak into electrical power system) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Prof. Emeritus Dr. Dali Đonlagić; Andrej Korak; Sašo Kreslin; Andrej Orgulan, MSc; Assoc. Prof. Dr. Gorazd Štumberger; Prof. Dr. Igor Tičar; Srečko Lesjak; Assoc. Prof. Dr. Franc Jakl; Jurček Voh; Janez Power Engineering Laboratory PE - 17

Ribič; Assoc. Prof. Dr. Jože Pihler Project partners: Dravske elektrarne Maribor, d. o. o. Financed by: HSE Invest

Energy storage is important for power stations which ensure electricity in a band (thermal power stations and nuclear power stations) so that they can operate with their maximum efficiency. For many decades pumped storage hydroelectric power stations have mainly been used for storing large amounts of energy, which can also be expected in the near future. Pumped storage hydroelectric power stations were first used only for energy storage and covering peaks, whereas now they have become an important and comprehensive controlling tool. What also needs to be taken into consideration when connecting these energy converters, apart from technical measures and restrictions, are their operational features and the system’s response to them, as well as the existing technical regulation in our country. The research is focused on the power connection of the pumped storage hydroelectric power station Kozjak into the electrical power system. The study covers the analysis of the suggested solutions concerning connection, the choice of the most suitable connection given the location, the effect on the environment and the analysis of the suggested solutions in the light of reliability. In so doing, it bases itself on the statistics of the losses of similar transformers and overhead lines set in a similar environment (snow, wind, isoceraunical level) and on the data of the supplier of the varspeed generator. The research is to provide an answer whether it is justifiable to set up a parallel overhead line in the area of Zg. Duplek or is it better to upgrade the existing line into a multiple circuit line; how strong is the existing bracing system of the towers; is it possible to strengthen the towers or is it necessary to build new ones in the common course line. It might be more appropriate to open a system towards Kainachtal and build a double circuit line Hrenca – Kozjak; how reliable is the heavy line along the valley of Drava and if it is even capable of transferring the desired amount of energy.

UIUN Ugotavljanje izvorov upadov napetosti (Determining Origins of Voltage Sags) Leader: Assoc. Prof. Dr. Gorazd Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Jože Pihler; Jurček Voh; Andrej Hanžič, MSc; Zlatko Strelec; Marjan Stegne; Dr. Boštjan Polajžer; Matej Toman; Andrej Korak; Prof. Dr. Drago Dolinar; Klemen Deželak; Prof. Dr. Jože Voršič; Janez Ribič Project partners: Gospodarsko interesno združenje distribucije električne energije Financed by: ELEKTRO CELJE, Javno podjetje za distribucijo električne energije, Elektro Gorenjska, javno podjetje za distribucijo električne energije, d. d., Elektro Maribor, d. o. o., Elektro Ljubljana, d. d., ELEKTRO PE - 18 Power Engineering Laboratory

PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d.

The voltage sags that appear in distribution networks have different origins. They can be caused by different events that appear in the distribution network or in the high voltage transmission networks. The transmission networks and the distribution networks are normally linked with a transformer. The aim of this study is to find reliable tools for determining origins of voltage drops, based on current and voltage measurements performed on the transformer terminals connected to the distribution network.

PIDPOPEEOV Postopki pri izdaji dovoljenj in priključevanju na omrežje proizvajalcev električne energije iz obnovljivih virov (Procedures for licence issuing and connection to the system of renewable energy production) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Andrej Hanžič, MSc; Jurček Voh; Assoc. Prof. Dr. Jože Pihler; Janez Ribič; Silvo Ropoša; Assoc. Prof. Dr. Gorazd Štumberger; Andrej Korak; Viljem Muzek Project partners: Javna agencija Republike Slovenije za energijo Financed by: Javna agencija Republike Slovenije za energijo

Renewable energy sources are the most reliable permanent energy sources on the Earth. The picture shows the comparison of proportions between annually renewable energy (solar and its most important indirect forms, biomass, wind and water) and common non-renewable sources (petroleum products, natural gas, uranium and coal). Annual solar energy which reaches the Earth is 2 895 000 EJ. The supplies of all non-renewable sources amount to 325 300 EJ (oil 8 690 EJ; natural gas 17 280 EJ; uranium 114 000 EJ and coal 185 330 EJ). The current world usage of energy is approximately 425 EJ/year. The aim of the study is to clarify the procedures and time necessary for the integration of producers of renewable source energy to the system with regard to European directives on verifying administrative procedures and our legislation. There has been a remarkable growth in installed photovoltaic system power in certain other countries and, therefore, the study should compare the procedures of integration in these countries also. Power Engineering Laboratory PE - 19

Order of Earth’s energy source magnitudes.

APL Akreditacija preskusnega laboratorija (Accreditation of testing laboratory) Leader: Assoc. Prof. Dr. Jože Pihler (Faculty of Electrical Engineering and Computer Science) Participants: Darko Koritnik, MSc; Marjan Stegne; Lidija Korpar Koritnik Project partners: ICEM-TC Financed by: Ministry of Economics of the Republic of Slovenia, ICEM-TC

In the year 2005 documentation for working security and fire security was arranged. Calibration of DC and AC power measuring line in ICEM laboratoy was also performed.

International projects

KSKI Quality of medium voltage composite insulators Leader: Assoc. Prof. Dr. Jože Pihler (Faculty of Electrical Engineering and Computer Science) Participants: Darko Koritnik, MSc; Janez Ribič; Marjan Stegne Project partners: ICEM-TC Financed by: DOMITRAN

Research of composite insulators’ quality was performed. Ways to sample test products, regarding specific terms of production and ways of type testing, was developed after studying PE - 20 Power Engineering Laboratory

production technology and used materials.

VBPC – RES 2004 The Virtual Balkan Power Center for Advance of Renewable 2005 Energy Sources Leader: Robert Golob (Faculty of Electrical Engineering, Univesity of Ljubljana) Participants: Prof. Dr. Jože Voršič; Andrej Hanžič, MSc Project partners: Faculty of Electrical Engineering, Univesity of Ljubljana, Inštitut Jožef Stefan, Faculty of Electrical Engineering and Computer Science Financed by: European Union

The countries in the Western Balkan region have great, but insufficiently exploited potential of Renewable Energy Sources (RES). The efficient use of RES could significantly contribute to security of supply within the region and in the wider neighbourhood. Special care would need to be devoted to innovative and viable solutions for electricity supply in underdeveloped areas and areas isolated due to war damage. The Virtual Balkan Power Center for Advance of Renewable Energy Sources in Western Balkans (VBPC-RES Project) has the following main objectives: - Transfer of know-how in RES technologies and its implementation for isolated regions - Identification of main economic and legislative factors influencing investment decisions in RES, including barriers and local specifics, and the identification of options for improvement of RES penetration -Building of awareness and education on technologies, means and benefits of renewable energy sources.

Completed research projects 2005

Applied project

L2-5407 Programski paket: "Zaščita pred učinki strele" (Software "Lightning protection") Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Jože Pihler; Darko Koritnik, MSc Project partners: Hermi, d. o. o. Power Engineering Laboratory PE - 21

Financed by: Hermi, d. o. o., Ministry of Education, Science and Sport of the Republic of Slovenia

Duration: Jan. 2003 to Dec. 2005

Software for controling quality of the lightning conductor has been developed based on the mathematical and physical model Cigre 33. Base for the software are valid regulations for lightning protection from year 1968 and on contemporary standards which take into consideration present state of the technology.

Research and development project

SIPVMMKJDO Strokovna izhodišča za pravila vključevanja mikro in majhnih kogeneracij v javna distribucijska omrežja (Expert origins of rules for including micro and small combined power plants into public distribution networks) Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Marjan Stegne; Janez Ribič; Andrej Orgulan, MSc; Andrej Hanžič, MSc; Jurček Voh; Viljem Muzek; Assoc. Prof. Dr. Gorazd Štumberger Project partners: TCPE - Tehnološki center za pretvarjanje energije Financed by: Ministry of Environment and Physical Planning of the Republic of Slovenia

Duration: Sept. 2004 to Dec. 2005

Energy needs and the technology availability enables mass application of small and micro energy converters in public networks. Their application and incorporation into public distribution networks is at the standardization level in some way researhed. But for distribution companies solid instructions at the regulations level still do not exist. This goes for small power energy converters with energy source mainly gas, hydro potential, solar energy and wind energy. Beside technical measures and limitations, the operating characteristics and network reply to their incorporation also needs to be taken into consideration. The study deals with origins for connection and parallel operation of micro energy converters with public low voltage distribution networks. Origins are formed based on cases of connecting and operating of such devices in Europe, some cases also from USA, Canada, Japan and (rarely) in Slovenia. PE - 22 Power Engineering Laboratory

Industrial project

PRVKNRVDMK Projekt raziskave vodnikov – kontrola neelastičnih raztezkov vodnikov na DV 2x400 kV Maribor - Kainachtal (Research of conductors – control of non-elastic conductor extensions on overhead line 2x400 kV Maribor-Kainachtal) Leader: Assoc. Prof. Dr. Franc Jakl (Faculty of Electrical Engineering and Computer Science) Participants: Andrej Jakl, Boris Facković Project partners: Elektro – Slovenia, d. o. o. Financed by: Elektro – Slovenia, d. o. o.

Duration: July to Dec. 2005

On the basis of an arrangement with ELES ELEKTRO SLOVENIJA d.o.o. Ljubljana, Hajdrihova 2, order form, number 102/3071/2005 from 1st August, 2005, a technical processing of data from the field measuring of sag and safety clearance, and preparing a report about the research of non-elastic conductor extensions of conductors type ACSR 490/65 on overhead line 2x400 kV Maribor-Kainachtal was agreed upon. This was carried out in 2005 as a research polygon between towers no. 4 and 5 for the period 1991 and 2005. The processing of data was carried out within the Power Engineering Laboratory of the Faculty of Electrical Engineering and Computer Science of Maribor University, sag measuring has been carried out by GEO-ELEKTRO d.o.o. Sesvete, Croatia. The final report was handed over to the client on 20th December, 2005.

International project

SAVE-2002-083 Dissemination of energy efficient electric and electronic equipment (EEE) in European universities - The purchasing of energy efficient and environmentally friendly information and communication technologies Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science) Participants: Andrej Hanžič, MSc; Miran Horvat; Darko Koritnik, MSc Project partners: COPERNICUS Secretariat Financed by: European Union

Duration: Apr. 2003 to Apr. 2005 Power Engineering Laboratory PE - 23

The proposal starts from the assumption that the immense increase in the use of electricity is mainly caused by the application of new information and communication technologies (ICT's) such as PC's, printers etc.. Universities are well-positioned to look deeper into this problem through their inherent teaching and research capacities. Furthermore, universities in Europe with more than 17 million students are important social multipliers and the graduate students are excellent change agents for realizing changing production and consumption patterns. The concept of the project bases on the idea of using the unique COPERNICUS network consisting of 286 universities in 36 European counties for the wide dissemination of the project results. A project consortium consisting of 11 universities from EU member states should develop together - under the coordination of COPERNICUS - a model for a purchasing initiative for energy-efficient ICT's. The model should be tested by the project consortium in a pilot action for a virtual market place that should be opened to other universities after the end of the project. Universities are perceived in this project as important driving forces for contribution to the promotion of energy-efficiency in Europe. The overall objectives of the SAVE project proposal is to assist universities to become more energy-efficient and climate-friendly through the integration of energy efficiency objectives into their purchasing directives for electric and electronic equipment (EEE). The project, therefore, will (1) undertake an assessment of the energy saving potential in office equipment, (2) raise awareness at all university levels for the use of energy-efficient and environmentally-friendly EEE (3) create a purchasing network in public procurement for energy-efficient and environmentally-friendly EEE. The overall objective of the proposed project is to assist universities to become more energy- efficient and climate-friendly through the integration of energy efficiency objectives into their purchasing directives for electric and electronic equipment (EEE). The project will therefore (1) obtain detailed information on how universities are purchasing their EEE in the area of ICT, (2) raise awareness at all university levels for the wide use of energy efficient office equipment in the area of ICT and to develop a model for a purchasing network for universi- ties for energy efficient equipment, (3) undertake a pilot action to assist universities in combining their efforts to purchase energy efficient and environmentally friendly office equipment by developing a tailor-suited marketplace for universities that can be opened up for other universities after the project and that might offer a model for other (public) procurement sectors

SI-AT/04-05/15 Virtual Electromagnetic Laboratory and Web-based Distance Learning Leader: Prof. Dr. Igor Tičar (Faculty of Electrical Engineering and Computer Science) PE - 24 Power Engineering Laboratory

Participants: Andrej Orgulan, MSc; Prof. Dr. Oscar Biro; Prof. Dr. Kurt Preis; Assoc. Prof. Dr. Jože Pihler; Andrej Stermecki; Peter Kitak Project partners: Institut für Grundlagen und Theorie der Elektrotechnik Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia,

Duration: Jan. 2004 to Dec. 2005

Cooperation on the project approved in 2002-2003, continued in 2004-2005. Together with Fundamentals and Theory of Electrotechnics Laboratory from our faculty we have cooperated with institute »Institut für Grundlagen und Theorie der Elektrotechnik (IGTE)« from the Technical university Graz.

PUBLICATIONS

Nadil Berbić, Rizah Memišević, Jože Voršič, “Application of program packages EMTDC and Matlab in the analysis of impact of neutral point operating regime on the magnitude of touch voltage,” IEEE trans. power deliv., Vol. 20, No. 2, pp. 838-843, Apr. 2005.

Drago Dolinar, Gorazd Štumberger, Miro Milanovič, “Tracking improvement of LSRM at low- speed operation,” Eur. trans. electr. power, Vol. 15, Iss. 3, pp. 257-270, 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modeling of permanent magnet synchronous motor in d-q coordinates,” Prz. Elektrotech., Vol. 81, No. 12, pp. 38-40, 2005.

Peter Kitak, Jože Pihler, Igor Tičar, “Optimisation algorithm for the design of bushing for indoor SF6 switchgear applications,” IEE proc., Gener. transm. distrib., Vol. 152, No. 5, pp. 691-696, Sep. 2005.

Petar Ljušev, Gorazd Štumberger, Drago Dolinar, “Rotor flux linkage oriented control of induction motor with included magnetic saturation,” IEE proc., Electr. power appl., Vol. 152, No. 1, pp. 112-118, Jan. 2005.

Jože Pihler, Igor Tičar, “Design of systems of covered overhead conductors by means of electric field calculation,” IEEE trans. power deliv., Vol. 20, No. 2, pp. 807-814, Apr. 2005.

Boštjan Polajžer, Jožef Ritonja, Gorazd Štumberger, Drago Dolinar, J.-P. Lecointe, “Decentralized PI/PD position control for active magnetic bearings,” Electr. eng. (Berl., Internet), 2005. Power Engineering Laboratory PE - 25

Marko Polak, Jože Voršič, “Načrtovanje vzdrževanja elektroenergetskih naprav s pomočjo verjetnosti,” Electrotechnical Review, Vol. 72, No. 5, pp. 267-272, 2005.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Prz. Elektrotech., Vol. 81, No. 12, pp. 104-106, 2005.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining the magnetically nonlinear characteristics of electromagnetic devices,” IEEE trans. magn., Vol. 41, No. 10, pp. 4030-4032, Oct. 2005.

Milan Vižintin, Jože Voršič, Jurček Voh, “Modeliranje omrežja RTP 110/20kV Rogaška Slatina s programom MATLAB,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 111-115, 2005.

Andrej Hanžič, Boris Čižmešija, Viljem Muzek, Jože Voršič, “Zahteve pri preklopu mikro- energetskega pretvornika,” EGES, Energ. gospod. ekol. Slov., Vol. 9, pp. 80-83, May-Jun.-Jul. 2005.

Andrej Orgulan, Jože Voršič, “Slovenian experience with the enforcement of light pollution legislation,” The 3rd international conference ILUMINAT 2005, the 3rd Balkan conference on lightning Balkan Light 2005, Cluj-Napoca, Romania, Jun. 2005, pp. 34-1-34-8.

Fouad Al-Mansour, Andrej Hanžič, “Biogorivo v prometu v Sloveniji,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Maks Babuder, et al. (4 avtorjev), “Assesment of causes and possibilities for preventing frequent conductor damages on 20 kV overhead lines equipped with covered conductors,” Proceedings of the XIVth International Symposium on High Voltage Engineering, Tsinghua University, Peking, China, aug. 2005, B 36, pp. 1-6.

Maks Babuder, Stane Vižintin, Zvonko Toroš, Jože Pihler, “Assessment of causes and possibilities for preventing frequent conductor damages on 20 kV overhead lines equipped with covered conductors,” Proceedings of the XIVth International Symposium on High Voltage Engineering, Tsinghua University, Peking, China, aug. 2005, pp. 1-6.

Bojan Cene, Jože Voršič, “Elektrificirana primestna železnica v Mariboru,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Boris Čižmešija, Andrej Hanžič, Viljem Muzek, Jože Voršič, “Kakovost bivalnega in delovnega okolja - elektromagnetne emisije,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005. PE - 26 Power Engineering Laboratory

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, “Določitev magnetno nelinearnih karakteristik železnega jedra trifaznega transformatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 342-345.

Rado Ferlič, Jože Pihler, “Obratovalne omejitve in varstveno kritični posegi pri obnovi 110 kv stikališča v RTP 110/10 kv Kidričevo,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Bojan Grčar, Peter Cafuta, Gorazd Štumberger, H. R. Cortés, Aleksandar M. Stanković, “Non- holonomic nature and torque control of induction machines,” SSRP 2005, 14. Steirisches Seminar über Regelungstechnik und Prozessautomatisierung, Schloss Retzhof, Leibnitz, Austria, Sep. 2005, pp. 167-181.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Sposobnost obratovanja asinhronskega motorja z navitim rotorjem v funkciji sinhronskega generatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 357-361.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Determination of magnetically nonlinear characteristics of permanent-magnet synchronous motor with exterior rotor,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Meritev magnetno nelinearnih karakteristik enosmerne elektromagnetne zavore,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 421-424.

Andrej Hanžič, “Photovoltaic,” Guidelines for renewable energy sources technologies: Workshop T.1.1, WP 1, Tuzla, Bosna in Hercegovina, Mar. 2005, Vol. 1, No. 1, pp. 5/45-65, 2005.

Andrej Hanžič, Roman Kolenko, Andrej Korak, Sašo Kreslin, Jože Pihler, Jože Voršič, “The feasibility study into the flow rise in Dravograd hydroelectric power station,” EUROCON 2005 - The International Conference on "Computer as a Tool", Beograd, Srbija in Črna gora, Nov. 2005.

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Oszkar Biró, Kurt Preis, Christian Magele, “Virtual design of insulation elements based on FEM and automated optimization process,” 2005 IEEE/ACES conference on Wireless communications and applied computational electromagnetics, Honolulu, Hawaii, ZDA, Apr. 2005. Power Engineering Laboratory PE - 27

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Christian Magele, Oszkar Bíró, Kurt Preis, “Use of optimization algorithm in designing of medium-voltage switchgear insulation elements,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, 2005, Vol. 4, pp. IV-118- IV-119.

Andrej Korak, Jože Voršič, “Expression of reliability at the example of UPS device,” 5th Balkan Power Conference, Sofia, Bolgarija, Sep. 2005.

Andrej Korak, Jože Voršič, “Podajanje zanesljivosti na primeru naprav za brezprekinitveno napajanje,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Vpliv harmonskih motenj na prenos energije v trifaznih sistemih,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Gorazd Stvarnik, Jože Pihler, Jože Voršič, “Vpliv števila zagonov na obratovalno pripravljenost termoelektrarne Šoštanj (blok 4),” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Anton Hamler, Mladen Trlep, “Permanent magnet synchronous motor with exterior-rotor: distributed or concentrated windings - motor performance,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Gorazd Štumberger, Sebastijan Seme, Klemen Deželak, Boštjan Polajžer, Matej Toman, Drago Dolinar, “The impcat of magnetically nonlinear iron core characteristics on responses of a three-phase power transformer dynamic model,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Simon Tajnšek, Jože Pihler, Igor Tičar, “Vpliv delovanja prenapetostne zaščite na polizolirane vodnike v srednjenapetostnih nadzemnih vodih s polizoliranimi vodniki,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 328-331.

Matej Toman, Drago Dolinar, Gorazd Štumberger, “Visokozmogljiv brezsenzorski pogon s sinhronskim strojem s trajnimi magneti,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 296-301. PE - 28 Power Engineering Laboratory

Boris Bizjak, Peter Planinšič, Jurij Bizjak, Jože Voršič, “Ugotavljanje in klasifikacija kakovosti električne energije s pomočjo mehke logike,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, pp. 2-53 - 2-57 ŠK2- 11.

Boris Bizjak, Peter Planinšič, Jože Voršič, “Tools for classification of power system disturbances,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modelling of permanent magnet synchronous motor in d-q coordinates,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 81-82.

Andrej Hanžič, Boris Čižmešija, Viljem Muzek, Jože Voršič, “Ozemljitev sončnih elektrarn,” 26. posvetovanje o močnostni elektrotehniki in sodobnih električnih instalacijah Kotnikovi dnevi: izobraževalni program, Radenci, Slovenia, May 2005, pp. 1/III - 16/III.

Andrej Hanžič, Boris Čižmešija, Viljem Muzek, Jože Voršič, “Zahteve pri preklopu mikro- energetskega pretvornika,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 2, pp. C4-27 - C4-31.

Andrej Hanžič, Darko Koritnik, Viljem Muzek, Jože Pihler, Jože Voršič, “Obnašanje mikro hidroelektrarn z asinhronskim generatorjem v omrežju,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 174-179.

Peter Kitak, Jože Pihler, Igor Tičar, “Način krmiljenja potenciala v notranjosti VN izolacijskih elementov,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 1, pp. A3-7 - A3-10.

Andrej Korak, Jože Voršič, “Izboljšanje oskrbe z električno energijo ter različno interpretiranje indeksa zanesljivosti,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 168- 173.

Andrej Korak, Jože Voršič, “Popravljanje kakovosti električne energije pri porabniku,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 2, pp. C4-11 - C4-16.

Darko Koritnik, Jože Pihler, Lidija Korpar Koritnik, “Potrebne karakteristike mreže napajanja za rad laboratorija za testiranje velikom snagom,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 186-191. Power Engineering Laboratory PE - 29

Darko Koritnik, Jože Pihler, Lidija Korpar Koritnik, “Potrebne karakteristike napajalnega omrežja močnostnega preskusnega laboratorija,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 1, pp. A3-11 - A3-15.

Darko Koritnik, Jože Voršič, “Stopenjska metoda geoelektričnega sondiranja zemlje,” Zanesljivost visokonapetostne izolacije in njena preostala življenjska doba z vidika obvladovanja tveganj v poslovanju elektroenergetskega sistema: zbornik referatov s 8. mednarodnega simpozija "Höflerjevi dnevi", Portorož, Slovenia, Nov. 2005.

Viktor Martinčič, Darko Koritnik, Jože Pihler, Danijel Glušič, “Uporaba nove generacije visokonapetostnih varovalk za zaščito transformatorjev,” 26. posvetovanje o močnostni elektrotehniki in sodobnih električnih instalacijah Kotnikovi dnevi: izobraževalni program: Radenci, Slovenia, Mar. 2005, pp. 1/IV - 15/IV.

Viktor Martinčič, Darko Koritnik, Jože Pihler, Danijel Glušič, “Upotreba nove generacije visokonaponskih topljivih osigurača kod zaštite transformatora,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 114-119.

Janez Ribič, Gorazd Štumberger, Nermin Sarajlić, “Vpliv upornosti zemlje in uporabljenih računskih metod na izračunane vrednosti obratovalnih parametrov nadzemnega voda,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

Silvo Ropoša, Jože Voršič, “Čas odklopitve male elektrarne v primeru okvare v omrežju,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 180-185.

Miran Rošer, Jože Pihler, Boris Kupec, “Zemeljski stiki in prekinitve vodnikov v srednjenapetostnih omrežjih,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, pp. 1-29 - 1-34 (ŠK1-6).

Miran Rošer, Gorazd Štumberger, Boris Kupec, “Analiza medsebojnih vplivov in delovanja zaščit pri paralelnem obratovanju srednjenapetostnih kablov v razdelilni transformatorski postaji Trnovlje,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, pp. 3-49 - 3-54 (ŠK3-10).

Andrej Stermecki, Igor Tičar, Jože Pihler, Peter Kitak, “The influence of skewing and shifting of the permanent magnets on the back EMF waveform of the PM electric motor,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 199-202. PE - 30 Power Engineering Laboratory

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 175-176.

Gorazd Štumberger, “Določitev karakteristik linearnega aktuatorja,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 340-345.

Gorazd Štumberger, “Induktivnosti, dinamične induktivnosti in časovne konstante v sistemih z magnetno nelinearnimi karakteristikami,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 429-432.

Gorazd Štumberger, “Prenos električne energije v primerih, ko toki in napetosti ne vsebujejo zgolj osnovnih harmonskih komponent,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, 30. Maya do 3. Jun.a 2005, Vol. 2, pp. C4-5 - C4-10.

Gorazd Štumberger, “Vpliv zanemaritev višjih harmonskih komponent na določitev magnetno nelinearne karakteristike železnega jedra transformatorja in na obnašanje dinamičnega modela,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 1, pp. A2-7 - A2-12.

Gorazd Štumberger, “Zmogljivosti pogona z asinhronskim motorjem izračunane z magnetno linearnim in magnetno nelinearnim modelom asinhronskega motorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 354-357.

Gorazd Štumberger, Klemen Deželak, Sebastijan Seme, Janez Ribič, Jože Voršič, Nermin Sarajlić, “Uticaj nelinearne magnetne karakteristike transformatora na proračun odziva dinamičkog modela,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

Gorazd Štumberger, Klemen Deželak, Jože Voršič, “Dinamični model elektroenergetskega sistema,” 26. posvetovanje o močnostni elektrotehniki in sodobnih električnih instalacijah Kotnikovi dnevi: izobraževalni program, Radenci, Slovenia, Mar. 2005, pp. 1/I - 13/I.

Gorazd Štumberger, Janez Ribič, Nermin Sarajlić, “Definicije snaga trofaznog sistema u slučaju nesimetrija,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

Gorazd Štumberger, Miran Rošer, Klemen Deželak, Sebastijan Seme, Peter Bergant, Jože Voršič, “Prehajanje motenj čez transformatorje v distribucijskih omrežjih,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, pp. 2-47 - 2-52 (ŠK2-10). Power Engineering Laboratory PE - 31

Gorazd Štumberger, Jure Zorko, “Model pretakanja vode v odprtem kanalu podan v obliki električnih vezij,” 14. mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2005.

Tanja Tacer, Danilo Klasinc, Jože Pihler, “Okoljska problematika in možne tehnične rešitve pri izgradnji malih hidroelektrarn na stari strugi reke Drave,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 2, pp. C4-17 - C4-22.

Matjaž Dolinar, Gorazd Štumberger, Boštjan Polajžer, Drago Dolinar, “Determining the magnetically nonlinear characteristics of a three phase core type power transformer,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 223.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Impact of iron core saturation on forces of radial magnetic bearings,” povzetek, pp. 32-33.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, “High performance permanent magnet brushless motors with balanced concentrated windings and similar slot and pole numbers,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 229.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magneti synchronous motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 228.

Bojan Štumberger, Gorazd Štumberger, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Flux-weakening performance on intrerior permanent magnet synchronous motor with multiple flux barriers,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 230.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of synchronous reluctance motor and induction motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 232.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining magnetically nonlinear characteristics of electromagnetic devices,” INTERMAG ASIA 2005: digest, International Magnetics Conference, Nagoya, Japonska, Apr. 2005, pp. 538. PE - 32 Power Engineering Laboratory

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Dynamic two-axis model of a synchronous reluctance motor based on current and position dependent characteristics of flux linkages,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 231.

Gorazd Štumberger, Drago Dolinar, Kay Hameyer, “Optimization of radial active magnetic bearings by using differential evolution and the finite element method,” Differential evolution: a practical approach to global optimization (Natural computing series), Kenneth V. Price, Rainer M. Storn, Jouni A. Lampinen, pp. 447-462, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Jože Pihler: “High voltage technic: tests of electrical equipment”, lecture presented at the Univerzity of Tuzla, Faculty of Electrical engineering, Jun. 2005.

Franc Jakl: “Temperature and Current Density Distribution at ACSR 490/65 Conductor and OPGW Cable”, invited lecturer at the 32nd Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines, Rio de Janeiro, Brazil, Sept. 8, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Jože Voršič, 14TH International Expert Meeting Komunalna Jurček Voh, energetika - Power Engineering 2005, international Andrej Hanžič, MSc, conference, organisation and implementation, Darko Koritnik, MSc, Maribor, Slovenia, May 10–12, 2005. Assoc. Prof. Dr. Jože Pihler, Assoc. Prof. Dr. Gorazd Štumberger:

VISITS TO OTHER INSTITUTIONS

Assoc. Prof. Dr. Jože Pihler: Lecture at "2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics", (undefined), Honolulu, Hawaii, United States, Apr. 1–10, 2005.

Assoc. Prof. Dr. Franc Jakl: Participation at 25th Meeting CIGRE WGB2.07 Foundations of Overhead Lines, meeting participation, Ljubljana, Slovenia, Apr. 13–15, 2005. Power Engineering Laboratory PE - 33

Andrej Hanžič, MSc, Co-operation by Matrix turbine project, visit, Linz, Andrej Korak, Austria, Apr. 18, 2005. Assoc. Prof. Dr. Jože Pihler, Marjan Stegne, Assoc. Prof. Dr. Gorazd Štumberger, Jurček Voh, Prof. Dr. Jože Voršič:

Assoc. Prof. Dr. Franc Jakl: Participation at 31st Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines, meeting participation, Palermo, Italy, May 1–3, 2005.

Assoc. Prof. Dr. Jože Pihler: Guest Professor, scientific collaboration, Tuzla, Bosina and Herzegovina, May 30 to June 30, 2005.

Assoc. Prof. Dr. Jože Pihler: Certification co-operation, formal call, Vienna, Austria, Sept. 26, 2005.

GUESTS AND VISITORS

Sreten Popović, Collaboration at International Project between Radojka Krneta, Slovenia and Serbia and Monte Negro, project Danijela Milošević, meeting participation, May 9–13, 2005. Siniša Ranđić (University of Kragujevac; Faculty of Technical Science Čačak, Čačak, Yugoslavia):

Sreten Popović Participation in Power Laboratory Expert Meeting, (University of Kragujevac; Faculty of meeting participation, Sept. 30, 2005. Technical Science Čačak, Čačak, Yugoslavia), Neven Srb (University of Zagreb, Zagreb, Croatia), Nermin Sarajlić (Faculty of Electrical Engineering, University of Tuzla, Tuzla, Bosina and Herzegovina): PE - 34 Power Engineering Laboratory

DECORATIONS, AWARDS, AND HONOURS

Assoc. Prof. Dr. Franc Jakl: cIGRE Pariz "Distinguished Member", June 30, 2005.

Electromechanical Systems Control Laboratory PE - 35

ELECTROMECHANICAL SYSTEMS CONTROL LABORATORY

Head: Prof. Dr. Bojan Grčar Phone: +386 2 220 70 71 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

L2-7560-1792 NAČRTOVANJE IN VODENJE NAPREDNEGA SISTEMA ZA TOČKASTO VARJENJE (DESIGN AND CONTROL OF AN ADVENCED SPOT WELDING SYSTEM) Leader: Assoc. Prof. Dr. Gorazd Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Zlatko Strelec; Dr. Oto Težak; Matej Gajzer, MSc; Tine Marčič; Peter Virtič; Matej Toman; Prof. Dr. Drago Dolinar; Dr. Boštjan Polajžer; Andrej Hanžič, MSc Project partners: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Tehnološki center za električne stroje Financed by: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Slovenian Research Agency

A system of spot welding is complex electromagnetic device composed of numerous elements. Some elements dominantly influence reliability of operation under prescribed specifications which consequently mean that there exists possibility to considerably increase the system performances. The existing transformer is oversized. The design of advanced adaptive control of power supply inverter will enable compensation of flux density DC component in transformer iron core which will reduce the dimensions of transformer considerably. PE - 36 Electromechanical Systems Control Laboratory

The goal of the project is to find an optimal transformer design and active control algorithm, which should together lead to the transformer reduction with prevention of the overload conditions on the primary at the same time. To reach this goal, analytical and experimental methods will be employed. The optimal transformer design and appropriate control of power supply inverter will be determined by differential evolution – a stochastic search algorithm.

Industrial projects

AE BS-2 Prenos električne moči v rotirajoče telo na osnovi koncepta generatorja na pogonski gredi (Transfer of electric power in the rotating body on the basis of electrical generator mounted on the drive shaft) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Mladen Trlep, Prof. Dr. Anton Hamler, Asst. Prof. Dr. Marko Jesenik, Viktor Goričan Project partners: Tehnološki center za električne stroje, KolektorGroup, d. o. o. Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

The object of the work is a feasibility study of the transfer of electric power in the rotating body on the basis of electrical generator mounted on the drive shaft. Different magnetic structures of electric generator were analyzed in accordance with restrictions and demands of power electronic converter which will be mounted on the generator terminals.

International projects

BPNVAS Induction machine (IM) torque control with improved efficiency Leader: Prof. Dr. Bojan Grčar (Faculty of Electrical Engineering and Computer Science) Participants: Hugo-Rodrigez Cortes, Aleksander Stanković, Assoc. Prof. Dr. Gorazd Štumberger, Assoc. Prof. Dr. Peter Cafuta New concept for IM torque control was developed based on its non-holonomic structure. Characteristic non-holonomic constraints derived for AM dictate rotating stator current vector and rotor flux linkage vector to reach and to maintain any feasible equilibrium point. To achieve maximal efficiency in the transient and in the steady-states, adjusted amplitude and frequency modulation of the stator current must additionally be assured. Required modulation Electromechanical Systems Control Laboratory PE - 37

was assured with the state controller derived from the Brockett’s controller proposed for a class of non-holonomic systems without drift. Proposed torque control assure high dynamic in torque response, asymptotic stability and maximal efficiency for all feasible operation conditions. Variation of the rotor time constant, non-linear magnetics as well as current and voltage limits are considered. Based on the experimental verification we conclude that proposed control fulfill all theoretical expectations and that is entirely suitable for various industrial applications.

EPADO Power Distribution Network Automation System - DINAS Leader: Prof. Dr. Bojan Grčar (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Jožef Ritonja, Prof. Dr. Drago Dolinar, Dr. Boštjan Polajžer Project partners: Iskra Sistemi, d. d. Ljubljana, Iskra Techno R&D, Sipronika d.o.o Ljubljana, UM-FERI, Faculty of Technical Sciences Novi Sad Financed by: Ministry of Science and Technology of the Republic of Slovenia

Part of the project that was developed at our institution was related to the detection, location and classification of the faults in the distribution networks. Several methods for fast and accurate estimation of loop parameters were derived. In contrast to methods that are based on signal approximation with the series of orthogonal base functions proposed methods are much less sensitive with respect to DC component, higher-, sub- and inter- harmonics as well as wit the respect to the measurement noise in the voltage and current signals. Developed methods that are verified with simulations are based on deterministic and stochastic line models in differential in integral time discrete forms. Based on assumed deterministic signals the estimation methods derived with the recursive least square technique and dynamic phasor assure best overall performance. In the case of stochastic models and signals with zero mean and normal distribution best performance was achieved with the Kalman filter/estimator. PE - 38 Electromechanical Systems Control Laboratory

Completed research projects 2005

Industrial project

VPPEES Vpliv prehodnih pojavov v EES na delovanje in parametrizacijo zaščitnih relejev (The influence of power system transients on numerical distance protection) Leader: Prof. Dr. Bojan Grčar (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Jožef Ritonja, Prof. Dr. Drago Dolinar Financed by: ELES Slovenia

Duration: Jan. 2004 to May 2005

Complete Slovenian power system transmission model including 400, 220 and 110 kV voltage level and with interconnections to neighborhood systems was developed. Dynamical model that was developed with the professional program tool NETOMAC, include change of topology, change of load and enables modeling of symmetrical and un-symmetrical faults. Due to the complexity the original system was divided into five subsystems. Number of test calculations enabling steady state and transient analyses was performed. In the second part of the project the problems associated with the numerical distance protection are considered. Relevant deterministic and stochastic methods for determination of loop impedance along with the models of nonlinear current transformers and the models of distance relays are given. The procedure for secondary relay testing is proposed based on pre-calculated transient test samples.

PUBLICATIONS

Drago Dolinar, Gorazd Štumberger, Miro Milanovič, “Tracking improvement of LSRM at low- speed operation,” Eur. trans. electr. power, Vol. 15, Iss. 3, pp. 257-270, 2005.

Boris Kremer, Drago Dolinar, “Optimizacija proizvodnje električne energije na dereguliranem trgu,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 97-106, 2005.

Petar Ljušev, Gorazd Štumberger, Drago Dolinar, “Rotor flux linkage oriented control of induction motor with included magnetic saturation,” IEE proc., Electr. power appl., Vol. 152, No. 1, pp. 112-118, Jan. 2005. Electromechanical Systems Control Laboratory PE - 39

Boštjan Polajžer, Jožef Ritonja, Gorazd Štumberger, Drago Dolinar, J.-P. Lecointe, “Decentralized PI/PD position control for active magnetic bearings,” Electr. eng. (Berl., Internet), 2005.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining the magnetically nonlinear characteristics of electromagnetic devices,” IEEE trans. magn., Vol. 41, No. 10, pp. 4030-4032, Oct. 2005.

Oto Težak, Drago Dolinar, Miro Milanovič, “Experimental determination of the MOSFET turn- off snubber capacitor,” Inf. MIDEM, Vol. 35, No. 2(114), pp. 65-71, Jun. 2005.

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, “Določitev magnetno nelinearnih karakteristik železnega jedra trifaznega transformatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 342-345.

Bojan Grčar, Peter Cafuta, Gorazd Štumberger, H. R. Cortés, Aleksandar M. Stanković, “Non- holonomic nature and torque control of induction machines,” SSRP 2005, 14. Steirisches Seminar über Regelungstechnik und Prozessautomatisierung, Schloss Retzhof, Leibnitz, Austria, Sep. 2005, pp. 167-181.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Vpliv harmonskih motenj na prenos energije v trifaznih sistemih,” 14. mednarodno posvetovanje Komunalna energetika, 10. in Maribor, Slovenia, May 2005.

Gorazd Štumberger, Sebastijan Seme, Klemen Deželak, Boštjan Polajžer, Matej Toman, Drago Dolinar, “The impcat of magnetically nonlinear iron core characteristics on responses of a three-phase power transformer dynamic model,” Proceedings, XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Matej Toman, Drago Dolinar, Gorazd Štumberger, “Visokozmogljiv brezsenzorski pogon s sinhronskim strojem s trajnimi magneti,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 20005, pp. 296-301.

Matjaž Dolinar, Gorazd Štumberger, Boštjan Polajžer, Drago Dolinar, “Determining the magnetically nonlinear characteristics of a three phase core type power transformer,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 223.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Impact of iron core saturation on forces of radial magnetic bearings,” abstract, pp. 32-33. PE - 40 Electromechanical Systems Control Laboratory

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of synchronous reluctance motor and induction motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 232.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining magnetically nonlinear characteristics of electromagnetic devices,” INTERMAG ASIA 2005: digest, International Magnetics Conference, Nagoya, Japan, Apr. 2005, pp. 538.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Dynamic two-axis model of a synchronous reluctance motor based on current and position dependent characteristics of flux linkages,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 231.

Gorazd Štumberger, Drago Dolinar, Kay Hameyer, “Optimization of radial active magnetic bearings by using differential evolution and the finite element method,” Differential evolution: a practical approach to global optimization (Natural computing series), Kenneth V. Price, Rainer M. Storn, Jouni A. Lampinen, pp. 447-462.

Oto Težak, Marlena Vinter, Računalništvo in informatika v živilstvu, študijsko gradivo za 1. letnik, Maribor: Živilska šola, Oct. 2005.

Žarko Čučej, Dušan Gleich, Peter Planinšič, Signali: povzetki teorije z zbirko rešenih nalog in primeri uporabe programa Matlab, Maribor: Faculty of Electrical Engineering and Computer Science, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Bojan Grčar: “Regulacija momenta asinhronih motora sa implicitnom varijacijom polja”, public lecture, Tehnički fakultet Čačak, Yugoslavia, Apr. 5, 2005.

Bojan Grčar, Žarko Čučej, Peter Cafuta, “Bologna Declaration: impact on technical study”, open tribune, Tehnički fakultet Čačak, Yugoslavia, Apr. 6, 2005.

Bojan Grčar: “Bologna process,” reparation of student programms, Čačak, Yugoslavia, Apr. 4, 2005.

VISITS TO OTHER INSTITUTIONS

Asst. Prof. Dr. Jožef Ritonja: "Process Automation", invited lectures, formal call, Electromechanical Systems Control Laboratory PE - 41

Bethune, France, Oct. 12–23, 2005.

PE - 42 Fundamentals and Theory of Electrotechnics Laboratory

FUNDAMENTALS AND THEORY OF ELECTROTECHNICS LABORATORY

Head: Prof. Dr. Igor Tičar Phone: +386 2 220 71 50 E-mail: [email protected]

RESEARCH PROJECTS

Completed research projects 2005

International project

SI-AT/04-05/15 Virtual Electromagnetic Laboratory and Web-based Distance Learning Leader: Prof. Dr. Igor Tičar (Faculty of Electrical Engineering and Computer Science) Participants: Andrej Orgulan, MSc; Prof. Dr. Oscar Biro; Prof. Dr. Kurt Preis; Assoc. Prof. Dr. Jože Pihler; Andrej Stermecki; Peter Kitak Project partners: Institut für Grundlagen und Theorie der Elektrotechnik Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia,

Duration: Jan. 2004 to Dec. 2005

In 2005 we contiuned for the fourth year with the cooperation on the common project between members of the Laboratory of fundamentals and theory in electrotehnics, UM FERI and the Institut für Grundlagen und Theorie der Electrotechnik (IGTE) of TU Graz, Austria. The emphasis of common research work of both laboratoriew in these years wa directed towarde improving and upgrading the existing jointly developed numerical porgramme package based on finite element method, named Elephant. The program was updated with the programme moudle for the automatic mesh generator and linked with the fully new developed programme module for automatic optimization process based on modern genetic Fundamentals and Theory of Electrotechnics Laboratory PE - 43

algorithms. The use of programme package Elephant together with newly developed program modules enables analyses and modeling processes of a variety of electrical devices with the support of fully automated optimization processes. The described programme tool is being efficiently used to solve applicative problems in industry. Both faculties are making good use of the abilities of this program tool in their pedagogical processes, where special efforts are being made towards a presentation and an application of these program tools with the help of internet tehnologies.

PUBLICATIONS

Oszkar Biró, Kurt Preis, Igor Tičar, “A FEM method for eddy current analysis in laminated media,” Compel, Vol. 24, No. 1, pp. 241-248, 2005.

Peter Kitak, Jože Pihler, Igor Tičar, “Optimisation algorithm for the design of bushing for indoor SF6 switchgear applications,” IEE proc., Gener. transm. distrib., Vol. 152, No. 5, pp. 691-696, Sep. 2005.

Jože Pihler, Igor Tičar, “Design of systems of covered overhead conductors by means of electric field calculation,” IEEE trans. power deliv., Vol. 20, No. 2, pp. 807-814, Apr. 2005.

Kurt Preis, Oszkar Biró, Igor Tičar, “FEM analysis of eddy current losses in nonlinear laminated iron cores,” IEEE trans. magn., Vol. 41, No. 5, pp. 1412-1415, May 2005.

Andrej Stermecki, Igor Tičar, Oszkar Biró, Kurt Preis, “Numerical analysis of permanent- magnet motor performance considering rotor movement,” IEEE trans. magn., Vol. 41, No. 5, pp. 2004-2007, May 2005.

Andrej Orgulan, Jože Voršič, “Slovenian experience with the enforcement of light pollution legislation,” The 3rd international conference ILUMINAT 2005, the 3rd Balkan conference on lightning Balkan Light 2005, Cluj-Napoca, Romania, Jun. 2005, pp. 34-1-34-8.

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Oszkar Biró, Kurt Preis, Christian Magele, “Virtual design of insulation elements based on FEM and automated optimization process,” 2005 IEEE/ACES conference on Wireless communications and applied computational electromagnetics, Honolulu, Hawaii, ZDA, Apr. 2005.

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Christian Magele, Oszkar Bíró, Kurt Preis, “Use of optimization algorithm in designing of medium-voltage switchgear insulation elements,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 4, pp. IV-118- IV-119. PE - 44 Fundamentals and Theory of Electrotechnics Laboratory

Kurt Preis, Oszkar Biró, Gerhard Buchgraber, Igor Tičar, “Thermal-electromagnetic coupling in FEM simulation of power transformers,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 1, pp. I-38 - I-39.

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM based design of an induction motor's part winding to reduce the starting current,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 1, pp. I-136 - I- 173.

Simon Tajnšek, Jože Pihler, Igor Tičar, “Vpliv delovanja prenapetostne zaščite na polizolirane vodnike v srednjenapetostnih nadzemnih vodih s polizoliranimi vodniki,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 328-331.

Igor Tičar, Andrej Stermecki, Ivan Zagradišnik, “Numerical analysis of the brushless motor magnetic field and torque,” Computer engineering in applied electromagnetism, pp. 221-226.

Peter Kitak, Jože Pihler, Igor Tičar, “Način krmiljenja potenciala v notranjosti VN izolacijskih elementov,” Zbornik CIRED, Zbornik CIGRÉ, Sedma konferenca slovenskih elektroenergetikov, Velenje, Slovenia, Jun. 2005, Vol. 1, pp. A3-7 - A3-10.

Andrej Stermecki, Igor Tičar, Jože Pihler, Peter Kitak, “The influence of skewing and shifting of the permanent magnets on the back EMF waveform of the PM electric motor,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 199-202.

Andrej Stermecki, Igor Tičar, Peter Kitak, “Comparison between two modeling approaches to a PM brushless motor study,” abstract, pp. 15-16.

Igor Tičar, Tine Zorič, Osnove elektrotehnike, Vol. 3, Izmenični tokokrogi in prehodni pojavi, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

VISITS TO OTHER INSTITUTIONS

Peter Kitak, Cooperation on common project with IGTE TU Andrej Stermecki: Graz, project meeting participation, Graz, Austria, Mar. 9, 2005.

Prof. Dr. Igor Tičar: Cooperation on common project with IGTE TU Graz, project meeting participation, Graz, Austria, Mar. 9–10, 2005. Fundamentals and Theory of Electrotechnics Laboratory PE - 45

Prof. Dr. Igor Tičar: Cooperation on common project with IGTE TU Graz, project meeting participation, Graz, Austria, May 23, 2005.

Prof. Dr. Igor Tičar: Visit of the international conference COMPUMAG 2005, meeting participation, Shenyang, People Republic of China, June 26–30, 2005.

Andrej Stermecki: Cooperation on common project with IGTE TU Graz, project meeting participation, Graz, Austria, Sept. 5, 2005.

Peter Kitak: Cooperation on common project with IGTE TU Graz, project meeting participation, Graz, Austria, Sept. 7–8, 2005.

Prof. Dr. Igor Tičar: Cooperation on common project with IGTE TU Graz, project meeting participation, Graz, Austria, Oct. 17–18, 2005.

Peter Kitak, Cooperation on common project with IGTE TU Andrej Stermecki, Graz, project meeting participation, Graz, Austria, Prof. Dr. Igor Tičar: Dec. 1, 2005.

GUESTS AND VISITORS

Prof. Dr. Kurt Preis, Cooperation on common project with Fundamentals Prof. Dr. Oscar Biro and Theory of Electrotechnics Laboratory, FERI (Institut für Grundlagen und Theorie Maribor, project meeting participation, Apr. 12, der Elektrotechnik, Graz, Austria): 2005.

Tomaž Slivnik Participation in education process in the field of (Faculty of Electrical Engineering, Fundamentals and Theory of electromagnetic Univesity of Ljubljana, 1000 Ljubljana, fields, scientific collaboration, Sept. 29, 2005. Slovenia):

Prof. Dr. Kurt Preis, Cooperation on common project with Fundamentals Prof. Dr. Oscar Biro and Theory of Electrotechnics Laboratory, FERI (Institut für Grundlagen und Theorie Maribor, project meeting participation, Nov. 9, 2005. der Elektrotechnik, Graz, Austria): PE - 46 Applied Electromagnetics Laboratory

APPLIED ELECTROMAGNETICS LABORATORY

Head: Prof. Dr. Mladen Trlep Phone: +386 2 220 70 41 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

SS-U1.1 Strukturni skladi, Ukrep 1.1: Spodbujanje inovacijskega okolja (Structure funds, Measure 1.1: Stimulation of the innovation environment) Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science) Participants: Aljaž Kapun, Milan Čurkovič, Dr. Aleš Hace, Dejan Kos, Prof. Dr. Anton Hamler, Gregor Edelbaher Project partners: Iskra MEHANIZMI, d. d., Iskra Industrija sestavnih delov, d. d., AET, d. o. o., Faculty of Electrical Engineering and Computer Science Polycentrical technological center as an international innovative system of Slovenian automotive cluster – Development of mechatronic components within the framework of the Polycentrical technological center.

AEPOSS Analiza elektromagnetnega polja v okolici strelovodnih sistemov (Analysis of the electromagnetic field around the lightning conductor systems) Leader: Prof. Dr. Mladen Trlep (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Bojan Štumberger, Viktor Goričan, Asst. Prof. Dr. Applied Electromagnetics Laboratory PE - 47

Marko Jesenik, Prof. Dr. Anton Hamler Financed by: Applied electromagetics laboratory

The purpose of the project is an analysis of the electromagnetic field around lightning systems. First of all two fields of research are investigated. The first field of research is the treatment of mechanisms for lightning spreading in a nonhomogeneous area with time changing characteristics. The second field of research is oriented towards a search for methods giving an exact calculation of the electromagnetic field, which is a condition for a quality solution to this problem. In the first phase, a finite element method is chosen, which is appropriate for the problem’s demands about calculation accuracy and detailed definition of the space characteristics being possible.

RMS Razvoj mehatronskih sklopov (Development of mechatronic connections) Leader: Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Marko Jesenik, Prof. Dr. Mladen Trlep, Asst. Prof. Dr. Bojan Štumberger, Gorazd Hrovat, Anton Habjanič, Viktor Goričan Project partners: Iskra MEHANIZMI, d. d. Financed by: Iskra MEHANIZMI, d. d., Ministry of Economics of the Republic of Slovenia

Development of different mechatronic connections, which are used first of all in the car industry, is doing within the framework of the project. It is a long-term project. Task of the Applied electromagnetics laboratory of the Faculty of Electrical Engineering and Computer Sciences in the year 2005 is the development of two electromechanical converters for mechatronic connections’ drives, which are developed as a prototypes and now the discussions with the partners are in progress.

Industrial projects

AE BS-2 Prenos električne moči v rotirajoče telo na osnovi koncepta generatorja na pogonski gredi (Transfer of electric power in the rotating body on the basis of electrical generator mounted on the drive shaft) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Mladen Trlep, Prof. Dr. Anton Hamler, Asst. Prof. Dr. Marko PE - 48 Applied Electromagnetics Laboratory

Jesenik, Viktor Goričan Project partners: Tehnološki center za električne stroje, KolektorGroup, d. o. o. Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

The object of the work is a feasibility study of the transfer of electric power in the rotating body on the basis of electrical generator mounted on the drive shaft. Different magnetic structures of electric generator were analyzed in accordance with restrictions and demands of power electronic converter which will be mounted on the generator terminals.

NMES Numerični modeli elektromagnetnih struktur (Numerical modelling of electromagnetic structures) Leader: Prof. Dr. Mladen Trlep (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Andrzej Krawczyk (Electrotechnical Institute) Participants: Asst. Prof. Dr. Marko Jesenik, Gorazd Hrovat, Matjaž Gaber, Prof. Emeritus Dr. Božidar Hribernik, Prof. Dr. Anton Hamler, Anton Habjanič, Asst. Prof. Dr. Bojan Štumberger, S. Sikora, R. Starzynski, J. Sikora, Prof. Dr. S. Wiak, Viktor Goričan Financed by: Ministry of Science and Technology of the Republic of Slovenia, Polish academy of Sciences

Applications of numerical methods for electromagnetic field analysis in biological tissues together with the development of an inverse approach with the DRM method for use in medical diagnostics was the work covered by this project. New software, which will provide some specific solutions and will be adapted to the existing program solutions, is being developed.

AE BS-1 Integrirani generator izmenične napetosti s korekcijo faktorja moči (Integrated generator of alternating voltage with power factor correction) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Prof. Dr. Anton Hamler, Asst. Prof. Dr. Marko Jesenik, Viktor Goričan, Prof. Dr. Mladen Trlep Project partners: Tehnološki center za električne stroje, Iskra Avtoelektrika, d. d. Financed by: Tehnološki center za električne stroje, Iskra Avtoelektrika, d. d.

The object of the work is the analysis of integrated generator with power factor correction. Two concepts of integrated generator with power electronic converter were analyzed in Applied Electromagnetics Laboratory PE - 49

respect to the complexity and structure of power electronic converter. Load characteristics of integrated generator were determined together with concentrated generator parameters for different speed and different load conditions.

MS32 Izdelava prototipa in osvajanje pilotne proizvodnje stikala MS 32 (Production of prototype and preparing pilot production of the switch MS 32) Leader: Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science) Participants: Viktor Goričan; Asst. Prof. Dr. Bojan Štumberger; Asst. Prof. Dr. Marko Jesenik; Boris Bizjak, MSc; Prof. Dr. Mladen Trlep; G. Hrovat Financed by: Ministry of Economy, Iskra Stikala, d. d.

Project was related to the development of a technically pretentious motor protection switch, the production of which will be cheaper than the production of existing less pretentious switches. Analysis of the magnetic, electrical and heating conditions, already done from the basic idea of switch construction, was our job in this project. Because the construction of the type of switch defined is 70% of costs, it bears the main burden of the switch price. The construction has likewise a basic influence on switch efficiency, which can be changed during the development and switch construction only, as in earlier mentioned analysis. Pilot switch production is in the stage of testing.

The temperature field distribution of the motor protection switch. PE - 50 Applied Electromagnetics Laboratory

PUBLICATIONS

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modeling of permanent magnet synchronous motor in d-q coordinates,” Prz. Elektrotech., Vol. 81, No. 12, pp. 38-40, 2005.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method for engineering data represented by triangular meshes,” WSEAS Trans. Math., Vol. 4, Iss. 3, pp. 266-272, Jul. 2005.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Načrtovanje mehatronskih naprav z uporabo dinamične emulacije mehanskih bremen,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 139- 144, 2005.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Prz. Elektrotech., Vol. 81, No. 12, pp. 104-106, 2005.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining the magnetically nonlinear characteristics of electromagnetic devices,” IEEE trans. magn., Vol. 41, No. 10, pp. 4030-4032, Oct. 2005.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A new method for compression of triangular engineering data,” Contrib. geom. model. multimed., Vol. 5, No. 2, pp. 1-20, 2005.

Viktor Goričan, Marko Jesenik, Anton Hamler, Bojan Štumberger, Mladen Trlep, “Measurement of 2-D magnetic properties of grain oriented silicon steel sheet using RRSST,” Computer engineering in applied electromagnetism, pp. 287-292.

Anton Habjanič, “The influence of soil ionization on the grounding system performance,” OWD'2005: VII international workshop for candidates for a doctor's degree, Wisła, Poland, Oct. 2005, pp. 333-336.

Anton Habjanič, Mladen Trlep, “The analysis of the additional substance influence on the grounding grid parameters by FEM,” 2005 IEEE/ACES conference on Wireless communications and applied computational electromagnetics, Honolulu, Hawaii, Apr. 2005.

Anton Habjanič, Mladen Trlep, “FEM analysis of grounding system parameters considering additional substance,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005. Applied Electromagnetics Laboratory PE - 51

Anton Habjanič, Mladen Trlep, “The simulation of the soil ionization phenomenon around the grounding system by the finite element method,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 3, pp. III-232 - III- 233.

Miralem Hadžiselimović, Tine Marčič, Matej Gajzer, Bojan Štumberger, Ivan Zagradišnik, “Uporaba motorja v protieksplozijski zaščiti za omrežji 400V/50Hz in 460V/60Hz,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 366-369.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Sposobnost obratovanja asinhronskega motorja z navitim rotorjem v funkciji sinhronskega generatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 357-361.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Determination of magnetically nonlinear characteristics of permanent-magnet synchronous motor with exterior rotor,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Meritev magnetno nelinearnih karakteristik enosmerne elektromagnetne zavore,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 421-424.

Anton Hamler, Gorazd Hrovat, Bojan Štumberger, Marko Jesenik, Mladen Trlep, “Use of FEM at coupled electric, thermal and thermal strain problems,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 3, pp. III-162 - III- 163.

Gorazd Hrovat, Anton Hamler, “The determining of heat circumstances in the MPS considering air flow,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 4, pp. IV-72- IV-73.

Gorazd Hrovat, Anton Hamler, “The heat circumstances in switch by permanent load,” Computer engineering in applied electromagnetism, pp. 293-296.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Eddy current effects in the sample of 2D R.R.S.S.T. and in the sample of 2D S.R.S.S.T.,” Computer engineering in applied electromagnetism, pp. 297-300. PE - 52 Applied Electromagnetics Laboratory

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Transient analysis of magnetic field including anisotropic magnetic material characteristics,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 2, pp. II-208 - II-209.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “An efficient compression method for triangular meshes used in engineering,” Proceedings of the WSEAS International Conferences: 7th WSEAS Int. Conf. on Mathematical Methods and Computational Techniques in Electrical Engineering (MMACTEE'05), 4th WSEAS Int. Conf. on Non-linear Analysis, Non- linear Systems and Chaos (NOLASC'05), 5th WSEAS Int. Conf. on Wavelet Analysis and Multirate Systems (WAMUS'05), Sofia, Bolgarija, Oct. 2005.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, Bojan Štumberger, “A study of magnetic flux density harmonics in a three phase squirrel-cage induction machine at ideal no- load condition,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Dean Ogrizek, Mladen Trlep, “Solving electrical impendance tomography by the dual reciprocity method,” COMPUMAG: record of the 11th COMPUMAG Conference on the computation of electromagnetic field, Vol. 1, pp. I-196 - I-197.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Control design in mechatronic systems using dynamic emulation of mechanical loads,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1635-1640.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Dynamic emulation of mechanical loads - approach based on nonlinear control,” EPE Dresden 2005, 11th European Conference on Power Electronics and Applications, Dresden, Germany, Sep. 2005.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Možnosti uporabe dinamične emulacije mehanskih bremen v avtomobilski industriji,” Zbornik referatov, 7. konferenca in razstava Inovativna avtomobilska tehnologija IAT'05, Bled, Slovenia, Apr. 2005.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Anton Hamler, Mladen Trlep, “Permanent magnet synchronous motor with exterior-rotor: distributed or concentrated windings - motor performance,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005.

Mladen Trlep, Anton Hamler, Marko Jesenik, Bojan Štumberger, “Interactive teaching of electromagneticfield by simultaneous FEM analysis,” COMPUMAG: record of the 11th Applied Electromagnetics Laboratory PE - 53

COMPUMAG Conference on the computation of electromagnetic field, Vol. 4, pp. IV-212 - IV- 213.

Peter Virtič, Bojan Štumberger, Ivan Zagradišnik, “Attractive electromagnetic force in DC electromagnetic brake; comparison between measured and calculated results,” XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, Sep. 2005

Miralem Hadžiselimović, Gorazd Štumberger, Bojan Štumberger, Ivan Zagradišnik, “Modelling of permanent magnet synchronous motor in d-q coordinates,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 81-82.

Darinko Stich, Anton Hamler, “Vpliv prepletanja palic statorskega navitja sinhronskega generatorja na porazdelitev tokov in velikost izgub,” Električni strojevi i uređaji, pogoni i postrojenja, 11. međunarodni simpozij ESUPP 2005, Šibenik, Croatia, Jun. 2005, pp. 54-58.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Minimization of torque ripple in surface mounted permanent magnet synchronous motors with optimal current waveforms control,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: [XV jubileuszowe sympozjum srodowiskowe], Ciechocinek, Poland, Sep. 2005, pp. 175-176.

Viktor Goričan, Anton Hamler, Marko Jesenik, Bojan Štumberger, Mladen Trlep, “Interaction of Z component of magnetic field between two samples of GO material in the round rotational single sheet tester (RRSST),” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 64.

Anton Habjanič, Mladen Trlep, “FEM analysis of the local non-homogeneity influence on the grounding grid parameters,” povzetek, pp. 52-53.

Anton Hamler, Viktor Goričan, Borivoj Šuštaršič, Albin Sirc, “The use of soft magnetic materials in synchronous electric motors,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 225.

Gorazd Hrovat, Anton Hamler, “Analysis of magnetic and thermal conditions in the motor protection switch,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 208.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Finite element magnetic field calculation in the anisotropic magnetic field,” abstract, pp. 50-51. PE - 54 Applied Electromagnetics Laboratory

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Transient finite element magnetic field calculation method in the anisotropic magnetic material based on the measured magnetization curves,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 210.

Sebastian Krivograd, Mladen Trlep, “Simplification, compression and visualisation tool for FEM triangular meshes,” abstract, pp. 58-59.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, “High performance permanent magnet brushless motors with balanced concentrated windings and similar slot and pole numbers,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 229.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magneti synchronous motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 228.

Bojan Štumberger, Gorazd Štumberger, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Flux-weakening performance on intrerior permanent magnet synchronous motor with multiple flux barriers,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 230.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of synchronous reluctance motor and induction motor,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 232.

Gorazd Štumberger, Boštjan Polajžer, Bojan Štumberger, Matej Toman, Drago Dolinar, “Evaluation of experimental methods for determining magnetically nonlinear characteristics of electromagnetic devices,” INTERMAG ASIA 2005: digest, International Magnetics Conference, Nagoya, Japan, Apr. 2005, pp. 538.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Dynamic two-axis model of a synchronous reluctance motor based on current and position dependent characteristics of flux linkages,” Soft Magnetic Materials Bratislava 2005, Bratislava, Slovakia, Sep. 2005, pp. 231.

Peter Virtič, Bojan Štumberger, Ivan Zagradišnik, “Core materials for DC electromagnetic brakes; influence on attractive electromagnetic force,” abstract, pp. 1-2.

Anton Hamler, Božidar Hribernik, Elektrotehnični materiali, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005. Applied Electromagnetics Laboratory PE - 55

Anton Hamler, Bojan Štumberger, Elektrotehnični materiali. Materiali v elektrotehniki: navodila za laboratorijske vaje, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Sebastian Krivograd; “Compression of triangular FEM data”, presentation at the Department of computer science and engineering, University of West Bohemia in Plzeň, Czech Republic, Apr. 21, 2005.

Sebastian Krivograd: “Compression of triangular meshes”, a learned discours on the Colloquium on technology, University of Vaasa, Deparment of computer science, Finland, Aug. 17, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Mladen Trlep, The Third Slovenian - Polish seminar on the Prof. Dr. Anton Hamler, subject of application electromagnetism, Asst. Prof. Dr. Marko Jesenik, international conference, organisation and Asst. Prof. Dr. Bojan Štumberger, implementation, , Slovenia, June 6–8, 2005. Viktor Goričan, Gorazd Hrovat, Anton Habjanič:

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Mladen Trlep: Visit of the international conference IEEE/ACES International Conference on Wirless Communications and Applied Computational Electromagnetics, meeting participation, Honolulu, Hawaii, United States, Apr. 3–7, 2005.

Asst. Prof. Dr. Marko Jesenik: Visit of the international conference HMM 2005, meeting participation, Budapest, Hungary, May 30 to June 1, 2005.

Viktor Goričan: Visit of the fair CWIEME - Coil Winding, Insulation & Electrical Manufacturuing 2005, visit, Berlin, Germany, June 21–23, 2005. PE - 56 Applied Electromagnetics Laboratory

Prof. Dr. Anton Hamler, Visit of the international conference COMPUMAG Prof. Dr. Mladen Trlep: 2005, meeting participation, Shenyang, People Republic of China, June 26–30, 2005.

Asst. Prof. Dr. Bojan Štumberger: Participation at scientific meeting of Polish society of applied electromagnetics, seminar participation, Ciechocinek, Poland, Sept. 1–3, 2005.

Viktor Goričan, Participation at the scientific conference SMM 17, Prof. Dr. Anton Hamler, meeting participation, Bratislava, Slovakia, Sept. 7– Asst. Prof. Dr. Bojan Štumberger: 9, 2005.

Anton Habjanič, Participation at the scientific ISEF 2005, meeting Asst. Prof. Dr. Bojan Štumberger: participation, Baiona, Spain, Sept. 15–17, 2005.

Anton Habjanič: Participation at the VII. International workshop for candidates for a doctor's degree OWD'2005, seminar participation, Gliwice, Poland, Oct. 22–25, 2005.

GUESTS AND VISITORS

Pawel Nowacki, Meeting within the framework of slovenian polish Romuald Kotowski seminar and within the framework of the scientific (Polish-Japanese Institute of research collaboration, scientific collaboration, June Information Technology, Warsaw, 6–8, 2005. Poland), Zijad Haznadar (Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia), Lidija Petkovska (Faculty of Electrical Engineering, Ss. Cyril and Methodius University, Skopje, The Former Yugoslav Republic Macedonia), Prof. Dr. S. Wiak (Instytut of Electrical Machines and Transformer, Technical University of Lodz, Lodz, Poland), Applied Electromagnetics Laboratory PE - 57

Prof. Dr. Andrzej Krawczyk (Central Institute for Labour Protection - National Research Institute, Warsaw, Poland):

Institute of Robotics RO - 1

INSTITUTE OF ROBOTICS

Head: Prof. Dr. Karel Jezernik Phone: +386 2 220 73 00 E-mail: [email protected] URL: http://www.ro.feri.uni-mb.si

The Institute of Robotics performs basic and applied research for the development and building of robotics systems, production automatization, sensor systems, control theory, modelling, identifications, computer process control, industrial robotics, servo-systems, robot controllers, and real-time control systems. We develop advanced-control algorithms for the control of position, speed, and torque with the use of various kinds of executive modules and constructions of robotic mechanisms. We continually develop and build new educational tools to improve the quality of the educational process and to introduce new technologies to students.

In the Kinematics and Simulation Laboratory, we conduct robot and robotization kinematics control and process simulation. We use both real and simulated controllers and mechanisms. Simulations deal with virtual and real systems and processes. We also investigate nonlinear and robust control for this reason.

In the Power Electronics Laboratory, we study electronic power devices. We research resonance converters and basic structures of DC/DC converters through modulation procedures.

The Institute of Robotics co-operates with many universities abroad. In the Socrates-Erasmus project we co-operate with Universidade do Minho - Portugal, Technische Universität RO - 2 Institute of Robotics

Braunschweig - Germany, Technische Universität Wien - Austria, Universitat Politechnica de Catalunya - Spain, Universitat Rovira i Virgili - Spain, Loughborough University - United Kingdom. In the CEEPUS programme we co-operate with Technical University of Timisoara - Romania, Budapest University of Technology and Economics - Hungary, Cracow University of Technology - Poland, Vienna University of Technology - Austria in Technical University of Košice - Slovak republic.

The institute members are listed below by the laboratory with which they are affiliated.

Institute of Robotics Head: Prof. Dr. Karel Jezernik

Power Industrial Electronics Robotics Laboratory Laboratory Head: Head: Prof. Dr. Miro Milanović Prof. Dr. Karel Jezernik

Kinematics and Simulations Laboratory Head: Assoc. Prof. Dr. Peter Cafuta

Institute of Robotics RO - 3

Power Electronics Laboratory

Head: Prof. Dr. Miro Milanović

Employees: Asst. Prof. Dr. Franc Mihalič; Dr. Alenka Hren; Anton Otič; Mitja Truntič

Industrial Robotics Laboratory

Head: Prof. Dr. Karel Jezernik

Employees: Assoc. Prof. Dr. Riko Šafarič; Asst. Prof. Dr. Martin Terbuc; Asst. Prof. Dr. Suzana Uran; Dr. Gregor Edelbaher; Dr. Aleš Hace; Dr. Miran Rodič; Dr. Andreja Rojko; Janez Pogorelc, MSc; Milan Čurkovič; Jože Harnik; Igor Hedrih; Aljaž Kapun; Jože Korelič; Dejan Kos; Rok Klobučar; Gregor Pačnik; Dr. Aleš Polič; Evgen Urlep; Jernej Otič.

Kinematics and Simulation Laboratory

Head: Assoc. Prof. Dr. Peter Cafuta

Employees: Asst. Prof. Dr. Boris Curk, Marijan Španer RO - 4 Power Electronics Laboratory

POWER ELECTRONICS LABORATORY

Head: Prof. Dr. Miro Milanovič Phone: +386 2 220 73 30 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Industrial projects

MOGEUS Motor-Generator in AC-DC pretvornik za brezkontaktni prenos energije na rotirajoče telo (Motor-Generator and AC-DC converter for contact less energy transfer on rotating part) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science), Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Dejan Kos, Primož Šlibar, Jože Korelič, Dr. Miran Rodič Project partners: Tehnološki center za električne stroje, KolektorGroup, d. o. o. Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

The aim of the project was to solve the energy transfer on a rotating part. The concept of motor and generator with appropriate converter was chosen. A three-phase buck rectifier with a power factor 1 was chosen for converter circuit. Power factor correction was carried out with an appropriate modulation algorithm. Energy transferred to the rotating part is 2kW.

STVPK Sodobne tehnologije vodenja za povečanje konkurenčnosti (Modern technologies for the increased competitive position) Leader: Zoran Marinšek (INEA d.o.o.), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science) Participants: Marijan Španer, Jože Korelič, Gregor Edelbaher, Dr. Miran Rodič, Power Electronics Laboratory RO - 5

Evgen Urlep, Milan Čurkovič, Darko Hercog, Anton Otič Project partners: Premogovnik Velenje, d. d., INEA, d. o. o., Institut "Jozef Stefan" Financed by: European Union, Ministry of Economics of the Republic of Slovenia, Premogovnik Velenje, d. d.

The goal of the proposed project is to develop and build 500V and 1000 V, 4 Q inverters for the use in Ex environment in underground coalmines. The equipment can be applied in the transporters, pumps and ventilators. Also a system for the testing and building of converters and electro-motor drives will be developed. The company Velenje Coalmine is a big consumer of the services in the area of automatization, where reliability and safety of applied solutions is of great importance. With the use of developed systems and technologies the company will be able to set more detailed demands regarding automatic control systems, and at the same time will be able to influence the development of the solution even before its final realization (verification of specifications). Thus the level of satisfaction with the automatization service will be increased. The research team from the Institute of Robotics, within the framework of standardization of software for the control systems, also developed a system for automatic speed-sensorless control of induction motors. Thereby the reliability and safety of drives' operation are improved. Additionally, their energetic efficiency will be increased, resulting in reduced costs.

AIZ Generator in 3 fazni AC- enofazni AC pretvornik za napajanje 4 kW-nih izmeničnih bremen (Generator and three phase AC to single AC converter for 4KW alternating load supply) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Jože Korelič, Evgen Urlep, Primož Šlibar Project partners: Tehnološki center za električne stroje, Iskra Avtoelektrika, d. d. Financed by: Iskra Avtoelektrika, d. d., Tehnološki center za električne stroje

The aim of the project was to develop a supply system suitable for boats’ or yachts’ local power supply. In the first phase, a feasibility study of such system has been carried out. Based on a study a converter was developed which is capable of changing (amplitude and frequency) three phase input voltage in to constant 220V, 50Hz AC voltage suitable for supplying power consumers on the boat, which is generated by the diesel motor. Desired output power is 4 KW. The converter is currently in the phase of testing. RO - 6 Power Electronics Laboratory

Prototype of active rectifire – single phase inverter 4 kW.

RESPRE Resonančni pretvornik za brezkontaktni prenos energije na rotirajoče telo (Resonant converter for contact lees energy transfer on rotating part) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Mitja Truntič, Jože Korelič, Primož Šlibar Project partners: Technologycal center for electric machines, KolektorGroup, d. o. o. Financed by: KolektorGroup, d. o. o., Tehnološki center za električne stroje

The aim of the project was to solve the energy transfer on a rotating part. A resonant converter carried out with four MOS-FET was chosen. Output voltage on the rotating part was regulated. Energy transferred to the load was 600W (project desired output power was 500W). Power Electronics Laboratory RO - 7

International projects

HySYS - FP6 EU Fuel Cell Hybrid Vehicle System Component Development Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Miran Rodič Project partners: Robert Bosch Gmbh, EPFL Financed by: Daimler-Chrysler GmbH

The aims of the project are: - Fuel cell (FC) system and component improvements, - Component improvement for electric vehicle drives (synergy FC in ICE-hybrid), - System architecture optimization for less consumption, high efficiency and reliability, - Optimization of energy consumption, - Development of cheap components for mass production, - Component and system evaluation for FC.

Completed research projects 2005

Applied project

Lenel-06 Prenos energije na rotirajoče telo III (The contact less energy transfer III) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Anton Otič; Matej Gajzer, MSc; Primož Šlibar; Dr. Miran Rodič; Dejan Kos; Jože Korelič; Asst. Prof. Dr. Franc Mihalič Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

Duration: Dec. 2004 to June 2005

Investigation and design of converter circuit for contact less energy transfer for the power range from 1,5kW to 2,5kW for the rotating display is performed. The cascade motor- generator-rectifier is going to work with unity power factor. RO - 8 Power Electronics Laboratory

Lenel-05 Prenos energije na rotirajoče telo II (The contact less energy transfer II) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Jože Korelič; Asst. Prof. Dr. Franc Mihalič; Anton Otič; Matej Gajzer, MSc; Primož Šlibar Financed by: KolektorGroup, d. o. o., Tehnološki center za električne stroje

Duration: Dec. 2004 to June 2005

Investigation and design of converter circuit based on resonant principle for contact less energy transfer for the power range from 500W to 1000W is done. The emphasis is on the control algorithm for the transformer primary voltage. The transformer is a part of resonant circuit.

PUBLICATIONS

Drago Dolinar, Gorazd Štumberger, Miro Milanovič, “Tracking improvement of LSRM at low- speed operation,” Eur. trans. electr. power, Vol. 15, Iss. 3, pp. 257-270, 2005.

Franc Mihalič, Dejan Kos, “Randomized PWM for conductive EMI reduction in DC-DC choppers,” Journal of science and engineering. Series B, Applied sciences and engineering, Vol. 2, Iss. 5-6, pp. 594-608, 2005.

Miro Milanovič, Dušan Gleich, “Buck converter digitally controlled by a fuzzy state-space controlled,” Journal of science and engineering. Series B, Applied sciences and engineering, Vol. 2, Iss. 5-6, pp. 638-654, 2005.

Riko Šafarič, Mitja Truntič, Darko Hercog, Gregor Pačnik, “Control and robotics remote laboratory for engineering education,” Int. j. online eng., Vol. 1, No. 1, 2005.

Oto Težak, Drago Dolinar, Miro Milanovič, “Experimental determination of the MOSFET turn- off snubber capacitor,” Inf. MIDEM, Vol. 35, No. 2(114), pp. 65-71, Jun. 2005.

Alenka Hren, Primož Šlibar, “Full order dynamic model of SEPIC converter,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 553-558. Power Electronics Laboratory RO - 9

Aljaž Kapun, Miro Milanovič, “Glajenje izhodne napetosti pretvornika navzdol brez uporabe izhodnega kondenzatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 391-394.

Ludvik Kolman, Miro Milanovič, “Enofazno galvansko ločeni usmernik s korekcijo faktorja moči,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, 26. - 28. september 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 399-402.

Dejan Kos, Franc Mihalič, Karel Jezernik, “Conductive EMI reduction in switched-mode power converters,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 441-446.

Franc Mihalič, Dejan Kos, “Conductive EMI reduction in DC-DC converters by using the randomized PWM,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 809-814.

Franc Mihalič, Dejan Kos, Karel Jezernik, “EMI in stikalni pretvorniki,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 302- 307.

Miro Milanovič, Jože Korelič, Alenka Hren, Franc Mihalič, Primož Šlibar, “The RC-RCD clamp circuit for fly-back converter,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 547-552.

Miro Milanovič, Mitja Truntič, Primož Šlibar, “Digital control algorithm for DC-DC buck converter implemented by FPGA,” EDPE 2005: conference CD, 13th International Conference Electrical Drives and Power Electronics and 2nd Joint Croatia-Slovakia Conference, Dubrovnik, Croatia, Sep. 2005.

Miro Milanovič, Mitja Truntič, Primož Šlibar, “FPGA implementation of digital controller for DC- DC buck converter,” Proceedings, pp. 439-443.

Riko Šafarič, Gregor Pačnik, Mitja Truntič, “Platform independent intelligent interface for remote control of robot arm,” International REV symposium remote engineering virtual instrumentation, 2005.

Primož Šlibar, Mitja Truntič, Miro Milanovič, “Implementacija digitalnega regulatorja izvedenega v FPGA vezju za DC/DC pretvornik navzdol,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 74-77. RO - 10 Power Electronics Laboratory

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Rapid control prototyping for remote controlled robot arm,” 14th International Workshop on Robotics in Alpe-Adria-Danube Region, May 26- 28, 2005, Bukarešta, Romania, May 2005, pp. 451-456.

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Remote rapid robot arm control prototyping,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1697-1702.

Miro Milanovič, Analogna integrirana vezja v industrijski elektroniki, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Miro Milanovič, Reviewer, international symposium, 2005 IEEE Asst. Prof. Dr. Franc Mihalič: International Symposium on Circuits ans Systems, Kobe, Japan, May 23–26, 2005.

Asst. Prof. Dr. Franc Mihalič: Reviewer, international symposium, 2005 IEEE International Symposium on Industrial Electronics, Dubrovnik, Croatia, June 20–23, 2005.

Prof. Dr. Miro Milanovič: Reviewer for IEEE Transactions on Power Electronics.

Industrial Robotics Laboratory RO - 11

INDUSTRIAL ROBOTICS LABORATORY

Head: Prof. Dr. Karel Jezernik Phone: +386 2 220 73 00 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

L2-6164 Ekspertni sistem za načrtovanje vodenje in regulacije asihronskega motorja (Expert system for designing of induction motor control) Leader: Dr. Franci Lahajnar (KolektorGroup d.o.o.) Participants: Dr. Miran Rodič, Prof. Dr. Karel Jezernik, Jože Korelič, Milan Čurkovič Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, KolektorGroup, d. o. o.

The goal of the proposed project is to develop an expert system that will enable a rapid engineering of motor control systems. The activities included into the project cover the following tasks: a) development of a generic induction motor control hardware system, on which basis a rapid development of the systems, specified by the customers, will be possible in the future, b) implementation, analysis and testing of previously proposed methods of induction motor control where more attention will be put into sensorless systems, c) research and potential breakthroughs with new or improved methods in the area of low speed, sensorless induction motor control. On the basis of the achieved results the project will be concluded with the development of an expert system, that will with its features of automatic code generation enable rapid RO - 12 Industrial Robotics Laboratory

development of custom designed systems

Research and development projects

CO STV RRP3 Center odličnosti za sodobne tehnologije vodenja - RR projekt: AK3a-3 (Center of Exelence for Advanced Control Technologies - R&D Project: AK3a-3) Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering and Computer Science) Participants: Aleksander Polutnik, MSc; Asst. Prof. Dr. Nenad Muškinja; Asst. Prof. Dr. Marjan Golob; Alojz Hojnik; Asst. Prof. Dr. Martin Terbuc; Božidar Bratina Project partners: Faculty of Electrical Engineering and Computer Science, TELEM, d. o. o.., INEA, d. o. o., Faculty of Electrical Engineering, Univesity of Ljubljana, Inštitut Jožef Stefan, Špica International Financed by: European Union, Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The main objective of the project part (PP) «The technologies of the remote and distributed control« within the complete project »The Centre of Excellence for modern technology control« is to perform research and development (R&D) activities in the area of new communication technologies for the purpose of remote and distributed control. The research results of the (R&D) activities will be verified with the (R&D) subprojects and the demonstration project which will expose the usage of new cognitions, methods and the elements of the newest communication technologies for the need of system control. The motivation to perform PP is to raise the competition capabilities of the Slovene economy, as well as of the users and providers- the project members- of the system control. Greater competition capability depends on capability to follow the fast development of the communication technologies and the implementation of them in an industrial setting. The interest of the project investors – the project partners is to join the individual R&D of the activities into the unified R&D project. The corner point of the research will be in the following areas: - the use of the newest communication technologies in the systems of the remote and distributed control - the development of the elements and subsystems of the remote and distributed system management - the development of methodology for safety assurance and the analysis of stability Industrial Robotics Laboratory RO - 13

functioning of industrial remote control systems, - the use of open source technology based program solutions for the purpose of the remote and distributed control and - distribution of the results and the education of workers with knowledge in the area of usage open sources, by the development of the modern systems of remote and distributed control.

DSP2LIB DSP-2 knjižnica za Simulink (DSP-2 library for Simulink) Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science) Participants: Darko Hercog, Evgen Urlep Rapid control prototyping (RCP) is one of the most important technologies for speeding up product development time. RCP is used in the design stage to quickly verify designed control strategy against real-world dynamics. In order to provide such RCP hardware and software solution for our students and researchers, DSP-2 library for Simulink has been developed. DSP-2 library is a Simulink add-on toolbox, which provides easy and rapid transition from the model-based control design in MATLAB/Simulink to the target implementation on the DSP-2 controller. This controller was developed (a few years ago) at FERI Maribor for the purpose of motor control. DSP-2 controller is based on a Texas Instruments 'C32 signal processor with the floating point arithmetic and Xilinx FPGA of Spartan family. Developed combination of commercially available software and custom-developed hardware (DSP-2 controller) represent a powerful RCP system, comparable with commercially available solutions. DSP-2 RCP system is used at FERI Maribor in pedagogic processes, as well as in thecontrol research area.

SS-U1.1 Strukturni skladi, Ukrep 1.1: Spodbujanje inovacijskega okolja (Strukturni skladi, Ukrep 1.1: Spodbujanje inovacijskega okolja) Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science) Participants: Aljaž Kapun, Milan Čurkovič, Dr. Aleš Hace, Dejan Kos, Prof. Dr. Anton Hamler, Gregor Edelbaher Project partners: Iskra MEHANIZMI, d. d., Iskra Industrija sestavnih delov, d. d., AET, d. o. o., Faculty of Electrical Engineering and Computer Science Within the project we are developing new mechatronic systems for the European automotive industry in cooperation with Iskra Mehanizmi d.d.. Thus our activities are directed towards the development of new types and control of stepping motors. RO - 14 Industrial Robotics Laboratory

Industrial projects

AIZ Generator in 3 fazni AC- enofazni AC pretvornik za napajanje 4 kW-nih izmeničnih bremen (Generator and three phase AC to single AC converter for 4KW alternating load supply) Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Jože Korelič, Evgen Urlep, Primož Šlibar Project partners: Tehnološki center za električne stroje, Iskra Avtoelektrika, d. d. Financed by: Iskra Avtoelektrika, d. d., Tehnološki center za električne stroje

The aim of the project was to develop supply system suitable for boats or yachts local power supply. In the first phase, a feasibility study of such a system was carried out. Based on the study the converter is developed which is capable of changing (amplitude and frequency) three phase input voltage in to constant 220V, 50Hz AC voltage suitable for supplying power consumers on the boat, which is generated by the diesel motor. Desired output power is 4 KW. Converter is currently in the phase of testing.

STVPK Sodobne tehnologije vodenja za povečanje konkurenčnosti (Modern technologies for the increased competitive position) Leader: Zoran Marinšek (INEA d.o.o.), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science) Participants: Marijan Španer, Jože Korelič, Gregor Edelbaher, Dr. Miran Rodič, Evgen Urlep, Milan Čurkovič, Darko Hercog, Anton Otič Project partners: Premogovnik Velenje, d. d., INEA, d. o. o., Institut "Jozef Stefan" Financed by: European Union, Ministry of Economics of the Republic of Slovenia, Premogovnik Velenje, d. d.

The goal of the proposed project is to develop and build 500V and 1000 V, 4 Q inverters for the use in Ex environment in the underground coalmines. The equipment can be applied in the transporters, pumps and ventilators. Also a system for testing and building of converters and electro-motor drives will be developed. The company Velenje Coalmine is a big consumer of the services in the area of automatization, where reliability and safety of applied solutions is of great importance. With the use of developed systems and technologies the company will be able to set more detailed demands regarding the automatic control systems, and at the same time will be able to influence the development of the solution even before its final realization (verification of Industrial Robotics Laboratory RO - 15

specifications). Thus the level of satisfaction with the automatization service will be increased. The research team from the Institute of Robotics, within the framework of standarding software for the control systems, also develops a system for automatic speed- sensorless control of induction motors. Thereby the reliability and safety of drives' operation are improved. Additionally their energetic efficiency will be increased, resulting in reduced costs.

130 kW explosion-proof frequency inverter for use in underground mines.

DIGIMIG Vgrajen digitalni krmilnik novih sinergijskih MIG/MAG varilnih aparatov (Embedded Digital Controller of New Synergic MIG/MAG Welding Devices) Leader: Asst. Prof. Dr. Marjan Golob (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Boris Tovornik; Alojz Hojnik; Asst. Prof. Dr. Nenad Muškinja; Janez Pogorelc, MSc; Božidar Bratina; Jože Korelič Financed by: Varstroj, d. d.

This industrial project goal is to develop an embedded digital controller for a new synergic MIG/MAG welding device. The controller is based on microprocessor PIC 16F877 and will enable operation of the welding device in several different modes. The setting method of the speed of the welding wire feed will be simplified, and PWM control of the DC motor unit, RO - 16 Industrial Robotics Laboratory

digital read-outs (current, voltage, wire feed), and a synergic parameter settings will be redesigned.

RESPRE Resonančni pretvornik za brezkontaktni prenos energije na rotirajoče telo (Resonant converter for contact lees energy transfer on rotating part) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Mitja Truntič, Jože Korelič, Primož Šlibar Project partners: Technologycal center for electric machines, KolektorGroup, d. o. o. Financed by: KolektorGroup, d. o. o., Tehnološki center za električne stroje

The aim of the project was to solve the energy transfer on rotating part. A resonant converter carried out with four MOS-FET was chosen. Output voltage on the rotating part is regulated. Energy transferred to the load was 600W (project desired output power was 500W).

MOGEUS Motor-Generator in AC-DC pretvornik za brezkontaktni prenos energije na rotirajoče telo (Motor-Generator and AC-DC converter for contact less energy transfer on rotating part) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science), Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science) Participants: Dejan Kos, Primož Šlibar, Jože Korelič, Dr. Miran Rodič Project partners: Tehnološki center za električne stroje, KolektorGroup, d. o. o. Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

The aim of the project was to solve the energy transfer on the rotating part. The concept of a motor and generator with an appropriate converter was chosen. A three-phase buck rectifier with a power factor 1 was chosen for converter circuit. The power factor correction was carried out with an appropriate modulation algorithm. Energy transferred to the rotating part is 2kW. Industrial Robotics Laboratory RO - 17

International projects

E-VINTER Phare 2003 - Creating an innovative learning environment, e- skill, and competence development, supporting the informal- lifelong-learning-form enforcement Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Borka Jerman Blažič (Institut "Jozef Stefan") Participants: Jože Korelič; Janez Pogorelc, MSc; Asst. Prof. Dr. Suzana Uran; Živa Hohnjec; Jernej Otič; Asst. Prof. Dr. Matjaž Debevc Project partners: Inštitut Jožef Stefan, Faculty of Electrical Engineering and Computer Science, SETCCE, Center RS za poklicno izobraževanje Financed by: Ministry of Education and Sport

In accordance with the PHARE 2003 ’’Lifelong learning’’ priority areas and guidelines, as well as with the national and European policy on the meaning and evaluation of informal learning. The E-VINTER project ensures the shift from standard learning forms and classical classrooms towards the creation of innovative and stimulative learning environment for the acquisition of knowledge, especially e-skills and e-competences, which support personal and professional growth. The E-VINTER project has met its objectives with three concrete working packages: · Establishment of an Expert Centre for Evaluation, Standardization, and Counselling for the purposes of selecting optimal e-tools for the establishment of e-learning environments, · Development of e-skills and competences within the framework of preparations for the national vocational training qualification, and · A pilot implementation of training through the established innovative learning environments in the designated regions: the Drava Region, the Mura Region, and Carinthia. The efficient implementation of the project is granted by the modern methods of knowledge transfer and quality partnership, which in accordance with the policy of harmonious regional development places the achievements of the research and development sphere into regional/ local environment.

HySYS - FP6 EU Fuel Cell Hybrid Vehicle System Component Development Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Miran Rodič Project partners: Robert Bosch Gmbh, EPFL Financed by: Daimler-Chrysler GmbH RO - 18 Industrial Robotics Laboratory

The aims of the project are: - Fuel cell (FC) system and component improvements, - Component improvement for electric vehicle drives (synergy FC in ICE-hybrid), - System architecture optimization for less consumption, high efficiency and reliability, - Optimization of energy consumption, - Development of cheap components for mass production, - Component and system evaluation for FC.

29298-IC-1-2003-1- SOCRATES ERASMUS Project MARE – Joint European Master AT-ERASMUS- Degree Program »Remote Engineering« PROGUC-1 Leader: Michael Auer (Carinthia Tech Institute) Participants: Assoc. Prof. Dr. Rajko Svečko, Andrej Knuplež, Asst. Prof. Dr. Matjaž Debevc, Assoc. Prof. Dr. Riko Šafarič Financed by: European Union

The main task of the project MARE is to elaborate a complete new joint curriculum in the field of »Remote Engineering«. The program is planned as a joint master's degree program. The use of virtual and remote laboratories and workplaces is one of the future directions for advanced teleworking / e-working environments especially in engineering and science but also in all other areas of society. This would also provide a benefit for people with special needs and people working from their homes. All over the world there is a lack of specialists in this field and the number of needed specialists will increase dramatically over the next years. The general objective of the curriculum is to mediate fundamentals, applications and experiences in the field of remote engineering by an interdisciplinary approach in combination with »learning by doing« phases. In this way we create in Europe the unique possibility of studying »Remote Engineering«. Technology enhanced learning in a dual mode will be the central didactic approach. The study program is open for students from all over and outside Europe and requires a bachelor degree in engineering or in science of informatics. Graduates will be able to work in remote working environments and to develop such environments. This project represents an important contribution to the information Society Policies (Lisbon Industrial Robotics Laboratory RO - 19

Agenda) and the eEurope Action.

SLO-TR/1 Sliding modes in motion control systems Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Asif Šabanović (Sabanci University) Participants: Dr. Aleš Hace, Kemalettin Erbatur, Dr. Miran Rodič, Dr. Andreja Rojko, Dr. Ahmet Onat, Gokhan Goktug, Asst. Prof. Dr. Suzana Uran Financed by: TUBITAK, Slovenian Research Agency

The project deals with the development of robust motion control algorithms on the basis of sliding mode control theory with the application of flexible servodrives and robotic systems.

SLO-HR/1 Robot visual servoing by neuro-fuzzy-genetic methods Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Asst. Prof. Dr. Mirjana Bonković (Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture,University of Split) Participants: Darko Stipaničev, Majda Štula, Rok Klobučar, Dr. Aleš Hace, Assoc. Prof. Dr. Riko Šafarič Financed by: Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture,University of Split, Faculty of Electrical Engineering and Computer Science

Computer vision enables non-contact environment sensation and introduces a new paradigm in the field of intelligent robot control. It can be applied to humanoid robots, automatic vehicle steering without human, flexible manufacturing systems, telerobotics and teleoperation systems, etc. Our research project deals with robot visual control on the basis of biomimetic concept, i.e. the use of neural nets, fuzzy logic and genetic algorithms in the robot visual servoing problem. In robot visual servoing such as Image Based Visual Servoing (IBVS) approach, only vision information is utilized in the position feedback. Here, the control signal is computed directly from the image features, thus a knowledge of compound Jacobian matrix may be required. In this case the robot, along with the vision system, must be calibrated prior to the operation. In our research we develop biomimetic algorithms for uncalibrated visual servoing.

SLO-JP/1 Fundamental research for bilateral teleoperation Leader: Prof. Dr. Kouhei Ohnishi (Keio University), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science) RO - 20 Industrial Robotics Laboratory

Participants: Toshiyuki Murakami, Igor Hedrih, Takahiro Yakoh, Dr. Aleš Hace, Toshiaki Tsuji, Assoc. Prof. Dr. Riko Šafarič Financed by: Faculty of Electrical Engineering and Computer Science, Keio University

In the area of telerobotics we perform research that deals with the transmission of reaction force from a remote place to a local human operater. Remote force feedback helps the human to be virtually present at a remote place, i.e. telepresence. Bilateral teleoperation system master-slave manipulator configuration enables transfer reaction force and touching sensation over distance. One of the most difficult issues arises from a communication time delay. In the project we built a bilateral teleoperation system over the Internet. We conduct experiments between Slovenia and Japan. This research will contribute to the development of practical teleoperation systems for space robotics, telemedicine, operation in hazardous areas and haptic applications.

Completed research projects 2005

Applied project

Lenel-06 Prenos energije na rotirajoče telo III (The contact less energy transfer III) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Anton Otič; Matej Gajzer, MSc; Primož Šlibar; Dr. Miran Rodič; Dejan Kos; Jože Korelič; Asst. Prof. Dr. Franc Mihalič Financed by: Tehnološki center za električne stroje, KolektorGroup, d. o. o.

Duration: Dec. 2004 to June 2005

Investigation and design of converter circuit for contact less energy transfer for the power range from 1,5kW to 2,5kW for the rotating display will be performed. The cascade motor- generator-rectifier is going to work with unity power factor.

Lenel-05 Prenos energije na rotirajoče telo II (The contact less energy transfer II) Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science) Participants: Jože Korelič; Asst. Prof. Dr. Franc Mihalič; Anton Otič; Matej Gajzer, Industrial Robotics Laboratory RO - 21

MSc; Primož Šlibar Financed by: KolektorGroup, d. o. o., Tehnološki center za električne stroje

Duration: Dec. 2004 to June 2005

Investigation and design of a converter circuit based on the resonant principle for contact less energy transfer for the power range from 500W to 1000W will be done. The emphasis will be on a control algorithm for the transformer’s primary voltage. The transformer will be part of a resonant circuit.

International project

4908701.01.01.0005 FOCUS-SIAT: Fostering cross border e-business cooperative environment through usage of advanced networked e-learning and e-business services Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Asst. Prof. Dr. Matjaž Debevc (Faculty of Electrical Engineering and Computer Science) Participants: Jernej Otič; Janez Pogorelc, MSc; Asst. Prof. Dr. Martin Terbuc; Assoc. Prof. Dr. Riko Šafarič Financed by: National Agency for Regional Develpoment of the Republic of Slovenia

Duration: Feb. 2004 to Apr. 2005

The general objective of the project FOCUS-SIAT is to increase the management proficiency levels in medium and small size enterprises, local authorities and other beneficiary bodies from CBC Interreg. IIIA program through improving the knowledge and skills of employees and unemployed people in the region by preparing them for e-business, for changes of the ways of working and thinking, or in other words to make them capable of understanding how the knowledge economy infrastructure works and how it can be used in the everyday working environment. This will be provided through specially-designed training and specially-designed ICT tools. FOCUS-SIAT will select 3 target groups from both sides of the border (one in Austria, one in Slovenia and one mixed) to receive the planned training. Each target group that will receive ICT based training by use of EducaNext portal and with the help of responsible tutors will consist of at least 15 – 30 trainees or more. Other type of training will be provided through workshops. The training provided through workshop(s) by use of video- conferencing facilities in the partners sites and information day(s) will have much a bigger number of attendees as these type of training will be open. RO - 22 Industrial Robotics Laboratory

PUBLICATIONS

Aleš Hace, Karel Jezernik, Asif Šabanović, “Improved design of VSS controller for a linear belt-driven servomechanism,” IEEE/ASME trans. mechatron., Vol. 10, No. 4, pp. 385-390, 2005.

Darko Hercog, Karel Jezernik, “Rapid control prototyping using MATLAB/Simulink and a DSP- based motor controller,” Int. j. eng. educ., Vol. 21, No. 4, pp. 596-605, 2005.

Franc Mihalič, Dejan Kos, “Randomized PWM for conductive EMI reduction in DC-DC choppers,” Journal of science and engineering. Series B, Applied sciences and engineering, Vol. 2, Iss. 5-6, pp. 594-608, 2005.

Aleš Polič, Karel Jezernik, “Closed-loop matrix based model of discrete event systems for machine logic control design,” IEEE transactions on industrial informatics, Vol. 1, No. 1, pp. 39-46, Feb. 2005.

Aleš Polič, Karel Jezernik, “Pristop na osnovi dogodkovnega vodenja za snovanje logičnih krmilij proizvodnih sistemov,” Ventil (Ljubl.), Vol. 11, No. 2, pp. 95-101, 2005.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Načrtovanje mehatronskih naprav z uporabo dinamične emulacije mehanskih bremen,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 139- 144, 2005.

Riko Šafarič, Mitja Truntič, Darko Hercog, Gregor Pačnik, “Control and robotics remote laboratory for engineering education,” Int. j. online eng., Vol. 1, No. 1, 8 f., 2005.

Suzana Uran, Darko Hercog, Karel Jezernik, “Web-based MATLAB and controller design learning,” IEEE Ind. Electron. Soc. newsl., Vol. 52, No. 4, pp. 14-16, 2005.

Janez Pogorelc, “Konstruiranje mobilnih robotov za tekmovanja,” Svet elektron., Vol. 12, No. 118, pp. 23-28, 2005.

Janez Pogorelc, “Odprto državno tekmovanje RoboT 2005,” Svet elektron., Vol. 12, No. 121, pp. 12-15, 2005.

Aleš Hace, Karel Jezernik, Asif Šabanović, “SMC with disturbance observer for a linear belt- drive,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1641-1646. Industrial Robotics Laboratory RO - 23

Aleš Hace, Aleš Polič, Karel Jezernik, “Rapid embedded control prototyping by Petri Nets,” IECON 2005, The 31th Annual Conference of the IEEE Industrial Electronics Society, Raleigh, North Carolina, USA, Nov. 2005.

Igor Hedrih, Aleš Hace, “Načrtovanje odprtega robotskega krmilnega sistema,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 177-180.

Karel Jezernik, Gregor Edelbaher, Asif Šabanović, “Low speed sensorless variable structure control of induction motor,” Preprints of the 16th IFAC World Congress, Praga, Czech Republic, Jul. 2005.

Karel Jezernik, Miran Rodič, “Torque sensorless IM control for EV's,” Proceedings, The 21st Worldwide battery, hybrid and fuel cell electric vehicle symposium & exhibition EVS-21, Monaco, Apr. 2005.

Karel Jezernik, Evgen Urlep, Aleš Polič, “Rapid sensorless variable structure torque control of PMSM,” IECON 2005, The 31th Annual Conference of the IEEE Industrial Electronics Society, Raleigh, North Carolina, USA, Nov. 2005.

Aljaž Kapun, Miro Milanovič, “Glajenje izhodne napetosti pretvornika navzdol brez uporabe izhodnega kondenzatorja,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 391-394.

Dejan Kos, Darko Hercog, Karel Jezernik, “Izvedba regulacijskega in modulacijskega algoritma na FPGA vezju za enosmerni motor z Mayhno električno časovno konstanco,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 403-406.

Dejan Kos, Franc Mihalič, Karel Jezernik, “Conductive EMI reduction in switched-mode power converters,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 441-446.

Franc Mihalič, Dejan Kos, “Conductive EMI reduction in DC-DC converters by using the randomized PWM,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 809-814.

Franc Mihalič, Dejan Kos, Karel Jezernik, “EMI in stikalni pretvorniki,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 302- 307. RO - 24 Industrial Robotics Laboratory

Miro Milanovič, Jože Korelič, Alenka Hren, Franc Mihalič, Primož Šlibar, “The RC-RCD clamp circuit for fly-back converter,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 547-552.

Gregor Pačnik, “Invalidski voziček z govornim upravljanjem -VOIC,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 229-232.

Gregor Pačnik, Karl Benkič, Bojan Brečko, “Voice Operated Intelligent Wheelchair - VOIC,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Sep. 2005, pp. 1221-1226.

Janez Pogorelc, “Mikrokrmilniki v učnem procesu,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 344- 347.

Aleš Polič, Aleš Hace, Karel Jezernik, “Modeling and logic control design for production system: a matrix based approach,” Frontier technologies for the future of industry and business, 3rd International conference on industrial informatics INDIN2005, Perth, Western Australia, Aug. 2005.

Aleš Polič, Karel Jezernik, “Dogodkovno voden pristop k snovanju logičnih krmilnih sistemov,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 223-228.

Aleš Polič, Karel Jezernik, “Matrix based event-driven approach for current control design of VSI,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 917-922.

Corneliu Radulescu, Peter Kopacek, Ferenc Alpek, Martin Terbuc, Vojtech Anna, Mikulas Hajduk, Karol Velisek, “The role and the results of CEEPUS projects in the education of applied robotics,” 14th International Workshop on Robotics in Alpe-Adria-Danube Region, Bucharest, Romania, May 2005, pp. 229-234.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Control design in mechatronic systems using dynamic emulation of mechanical loads,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1635-1640.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Dynamic emulation of mechanical loads - approach based on nonlinear control,” EPE Dresden 2005, 11th European Conference on Power Electronics and Applications, Dresden, Germany, Sep. 2005. Industrial Robotics Laboratory RO - 25

Miran Rodič, Karel Jezernik, Mladen Trlep, “Možnosti uporabe dinamične emulacije mehanskih bremen v avtomobilski industriji,” Zbornik referatov, 7. konferenca in razstava Inovativna avtomobilska tehnologija IAT'05, Bled, Slovenia, Apr. 2005.

Andreja Rojko, Karel Jezernik, “Fuzzy estimation of the robot load,” Preprints of the 16th IFAC World Congress, Praga, Czech Republic, Jul. 2005.

Andreja Rojko, Karel Jezernik, “Identification of robot dynamics by using a fuzzy logic,” Proceedings, 14th International Workshop on Robotics in Alpe-Adria-Danube Region, Bucharest, Romania, May 2005, pp. 274-279.

Riko Šafarič, Gregor Pačnik, Mitja Truntič, “Platform independent intelligent interface for remote control of robot arm,” International REV symposium remote engineering virtual instrumentation, 2005.

Martin Terbuc, “Free/open source software in e-education,” Technical creativity in school's curricula with the form of project learning "From idea to the product": from the kindergarten to the technical faculty: proceedings: 3rd international science symposium: od vrtca do fakultetnega tehniškega študija: zbornik prispevkov: 3. mednarodni znanstveni posvet, Portorož, Slovenia, Apr. 2005, pp. 52-57.

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Rapid control prototyping for remote controlled robot arm,” Proceedings, 14th International Workshop on Robotics in Alpe-Adria-Danube Region, Bucharest, Romania, May 2005, pp. 451-456.

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Remote rapid robot arm control prototyping,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1697-1702.

Evgen Urlep, Gregor Edelbaher, Karel Jezernik, “Sensorless control of PMSM using measurement of phase voltages,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1653-1658.

Evgen Urlep, Karel Jezernik, “Identifikacija parametrov ASM z roji delcev,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 227-230.

Evgen Urlep, Aleš Polič, Karel Jezernik, “Speed sensorless control of PM synchronous machine using direct current control,” EPE Dresden 2005, 11th European Conference on Power Electronics and Applications, Dresden, Germany, Sep. 2005. RO - 26 Industrial Robotics Laboratory

Janez Pogorelc, Uroš Derstvenšek, Andrej Koštomaj, Marjan Golob, Ivan Bohnec, Silvin Domjan, “Razvoj in testiranje programske opreme mikrokrmilniškega vgrajenega sistema za varilne naprave,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 105-109.

Martin Terbuc, Suzana Uran, Andreja Rojko, Karel Jezernik, “Web based education of robotics and mechatronics at the University of Maribor,” Book of abstracts: CAITA-2004.

Janez Pogorelc, Uvod v programiranje mikrokrmilnikov: učni vodnik in navodila za vaje, Faculty of Electrical Engineering and Computer Science, Inštitut za robotiko, Slovenia, 2005.

Janez Pogorelc, Uvod v programiranje mikrokrmilnikov: [zbrano gradivo za predavanja], Faculty of Electrical Engineering and Computer Science, Inštitut za robotiko, Slovenia, 2005.

Riko Šafarič, Izdelavne tehnologije, Faculty of Electrical Engineering and Computer Science, Mehatronika, Slovenia, 2005.

Riko Šafarič, Robotika I, Faculty of Electrical Engineering and Computer Science, Mehatronika, Slovenia, 2005.

Riko Šafarič, Sistemi mehatronike, Faculty of Electrical Engineering and Computer Science, Mehatronika, Slovenia, 2005.

Riko Šafarič, Andreja Rojko, Inteligentne regulacijske tehnike v mehatroniki, Faculty of Electrical Engineering and Computer Science, Mehatronika, Slovenia, 2005.

Riko Šafarič, Suzana Uran, Regulacijska tehnika I, Faculty of Electrical Engineering and Computer Science, Mehatronika, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Karel Jezernik: “Modeling and logic control desing for production system: a matrix based approach”, a seminar on School of Electrical and Computer systems engineering, RMIT University, Melbourne, Australia, Aug. 22, 2005.

Milan Čurkovič, Miran Rodič, Janez Pogorelc, Aljaž Kapun, Karel Jezernik: “3rd technology transfer day for Chamber of craft of Slovenia”, the use of microprocessors, microcontrollers and signal processors, Maribor, Slovenia, Feb. 3, 2005. Industrial Robotics Laboratory RO - 27

Karel Jezernik, Janez Pogorelc: “6th national student competition in mobele robotics, 5th national high school competition in mobile robots - RoboT2005,” organization and realization of national competititon in mobile robotics, Maribor, Slovenia, May 12, 2005.

Suzana Uran, Riko Šafarič, Evgen Urlep: “Regional primary school competition in construction and drive in mobile robots LegoBum,” organization and realization of competition, Maribor, Slovenia, May 12, 2005.

Milan Čurkovič, Janez Pogorelc, Karel Jezernik, Gregor Edelbaher, Andreja Rojko, Suzana Uran, Martin Terbuc, Evgen Urlep, Aleš Polič, Jernej Otič: “Presentation of Institute of Robotics at fair Hevreka'05,” collaboration at fair with our products, posters and handbills, seminar: "FPGA IC in industrial products", Ljubljana, Slovenia, May 24, 2005.

Jernej Otič, Suzana Uran, Dejan Kos, Karel Jezernik, Janez Pogorelc, Martin Terbuc, Gregor Pačnik, Milan Čurkovič: “Presentation of Institute of robotics at 38th International trade fair in Celje,” exibits, video presentation, lecture, Celje, Slovenia, Sept. 7, 2005.

Riko Šafarič, Suzana Uran, Janez Pogorelc: “Natural Science and Technics Day,” workshops: Mobile robots, Remote control, Maribor, Slovenia, Sept. 16, 2005.

Aljaž Kapun, Suzana Uran: “Introduction to Matlab/Simulink for students,” course on the use of Matlab/Simulink program package for students, Maribor, Slovenia, Sept. 29, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Karel Jezernik: Programme committee member, conference, The 7th IASTED International Conference on CONTROL AND APPLICATIONS, CA 2005, Cancun, Mexico, May 18–20, 2005.

Asst. Prof. Dr. Suzana Uran, Reviewer, conference, The 7th IASTED Dr. Aleš Hace: International Conference on CONTROL AND APPLICATIONS, CA 2005, Cancun, Mexico, May 18–20, 2005.

Prof. Dr. Karel Jezernik: Co-organiser, international symposium, 2005 IEEE International Symposium on Industrial Electronics, Dubrovnik, Croatia, June 20–23, 2005.

Prof. Dr. Karel Jezernik: Reviewer, international symposium, 2005 IEEE International Symposium on Industrial Electronics, RO - 28 Industrial Robotics Laboratory

Dubrovnik, Croatia, June 20–23, 2005.

Asst. Prof. Dr. Suzana Uran, Reviewer, international congress, 16th Trienal Dr. Andreja Rojko, World Congress of the International Federation of Dr. Aleš Hace: Automatic Control, Praga, Czech Republic, July 4– 8, 2005.

Prof. Dr. Karel Jezernik: Reviewer, international symposium, IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, Wien, Austria, Sept. 7–9, 2005.

Prof. Dr. Karel Jezernik, Reviewer, international conference, 10th European Evgen Urlep, Conference on Power Electronics and Applications, Gregor Edelbaher, Dressden, Germany, Sept. 11–14, 2005. Dr. Miran Rodič:

Gregor Edelbaher, Reviewer, international conference, 36th IEEE Dr. Miran Rodič: Power Electronics Specialists Conference, Recife, Brazil, June 12–16, 2005.

Prof. Dr. Karel Jezernik, Automation in Industry and Commerce AIG'05, Gregor Edelbaher, conference, organisation and implementation, Dr. Aleš Hace, Maribor, Slovenia, Apr. 7–8, 2005. Asst. Prof. Dr. Martin Terbuc, Janez Pogorelc, MSc:

Dr. Aleš Hace: Reviewer for IEEE Transactions on Industrial Electronics.

Prof. Dr. Karel Jezernik: Reviewer for Journal of Robotic Systems.

Assoc. Prof. Dr. Riko Šafarič: Reviewer for Proceedings of the IEEE.

Assoc. Prof. Dr. Riko Šafarič: Reviewer for Journal of Systems and Control Engineering - Part I.

Prof. Dr. Karel Jezernik: Reviewer for IEE Proceedings - Electric Power Applications.

Asst. Prof. Dr. Suzana Uran: Reviewer for Transactions of the Institute of Measurement and Control. Industrial Robotics Laboratory RO - 29

Prof. Dr. Karel Jezernik: Reviewer for IEE Electronics Letters.

Dr. Miran Rodič: Reviewer for Int. Journal of Adaptive Control and Signal Processing.

Dr. Miran Rodič: Reviewer for European Power Electronics and Drives Journal.

VISITS TO OTHER INSTITUTIONS

Assoc. Prof. Dr. Riko Šafarič: Visit regarding project MARE, formal call, Villach, Austria, Jan. 31 to Feb. 2, 2005.

Dr. Aleš Hace: Visiting researcher at Sabanci University, bilateral project SLO-TR/1,, scientific collaboration, Istanbul, Turkey, Feb. 1–13, 2005.

Assoc. Prof. Dr. Riko Šafarič: Meeting regarding future cooperation, formal call, Ilmenau, Germany, Feb. 6–10, 2005.

Assoc. Prof. Dr. Riko Šafarič: Meeting regarding project DAAD. Lecture:Teleoperating of mechatronics systems, formal call, Budapest, Hungary, Mar. 8–11, 2005.

Assoc. Prof. Dr. Riko Šafarič: Meeting of the working groop for project MARE, project meeting participation, Brasov, Romania, June 30 to July 1, 2005.

Prof. Dr. Karel Jezernik: Invited lecture: "Modeling and Logic control Design for Production System: A Matrix Based Approach", visit, Melbourne, Australia, Aug. 17–24, 2005.

Prof. Dr. Karel Jezernik: Invited lecture at the cycle Public seminars with the title Speed sensorles variable structure torque control of AC motor, formal call, Zurich, Switzerland, Nov. 28 to Dec. 1, 2005. RO - 30 Industrial Robotics Laboratory

GUESTS AND VISITORS

M. Miločević, Visit partners of project DAD, formal call, May 6–7, N. Pavlović 2005. (University of Nis, Nis, Yugoslavia), Helmut Wurmus (Technical University of Ilmenau, Ilmenau, Germany), Antal Huba (Budapest University of Technology and Economics, Budapest, Hungary), Szilveszter Pletl ( Institute of Electro-Mechanical Systems, Subotica, Subotica, Yugoslavia), Nikolaj Krantov (Technical University of Sofia, Sofia, Bulgaria), Gyula Mester (University of Szeged, Szeged, Hungary):

Maniu Inocentiu Teaching staff mobility in CEEPUS project RO- (Technical University of Timisoara, 0124-03/05, scientific collaboration, May 10–20, Timisoara, Romania), 2005. Corneliu Radulescu (Politehnica University of Timisoara, Timisoara, Romania), Marian Kralik (Faculty of mechanical engineering, Technical University of Bratislava, Brno, Slovakia):

Prof. Dr. Asif Šabanović Study visit through the Socrates/Erasmus teaching (Sabanci University, Istanbul, Turkey): staff activity, research work, May 14–20, 2005.

Andreas Pester Exchange of experience in education anr research (Carinthia Tech Institute, Villach, achievement, lecture on robotics, lectures and Austria): laboratory exercises for 10 students from CTI, formal call, May 20–21, 2005.

Mehmet Dal Research cooperation, scientific collaboration, June Industrial Robotics Laboratory RO - 31

(Kocaely University, Izmit, Turkey): 20 to Sept. 20, 2006.

Antal Huba Exchange of experience in education anr research (Budapest University of Technology achievement, lecture on robotics, lectures and and Economics, Budapest, Hungary): laboratory exercises for 10 students from CTI, formal call, June 26–29, 2005.

Ferenc Alpek Teaching staff mobility in CEEPUS program RO- (Budapest University of Technology 0124-03/05, scientific collaboration, July 4–16, and Economics, Budapest, Hungary): 2005.

DECORATIONS, AWARDS, AND HONOURS

Prof. Dr. Karel Jezernik: honour for extreme achievements in connection between crafts and firms with academic sphere, Maribor, Slovenia, Sept. 24, 2005.

Janez Pogorelc, MSc: bronasti znak Univerze v Mariboru, Maribor, Slovenia, Nov. 16, 2005.

RO - 32 Kinematics and Simulations Laboratory

KINEMATICS AND SIMULATIONS LABORATORY

Head: Assoc. Prof. Dr. Peter Cafuta Phone: +386 2 220 73 40 E-mail: [email protected]

PUBLICATIONS

Bojan Grčar, Peter Cafuta, Gorazd Štumberger, H. R. Cortés, Aleksandar M. Stanković, “Non- holonomic nature and torque control of induction machines,” SSRP 2005, 14. Steirisches Seminar über Regelungstechnik und Prozessautomatisierung, Schloss Retzhof, Leibnitz, Austria, Sep. 2005, pp. 167-181.

Marijan Španer, “Dvoosni aktivni mehanizem,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 247-250.

Marijan Španer, “Referenčni vir sinusnega toka,” Zbornik četrte konference Avtomatizacija v industriji in gospodarstvu, Maribor, Slovenia, Apr. 2005, pp. 291-295.

Žarko Čučej, Dušan Gleich, Peter Planinšič, Signali: povzetki teorije z zbirko rešenih nalog in primeri uporabe programa Matlab, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Bojan Grčar, Žarko Čučej, Peter Cafuta: “Bologna Declaration: impact on technical study”, open tribune, Tehnički fakultet Čačak, Yugoslavia, Apr. 6, 2005.

Peter Cafuta: “Bologna process,” reparation of student programms, Vilach, Austria, Mar. 17, 2005.

Peter Cafuta: “Bologna process,” reparation of student programms, Čačak, Yugoslavia, Apr. 4, 2005. Kinematics and Simulations Laboratory RO - 33

Marijan Španer: “Presentation of Institute of Robotics at fair Hevreka'05,” collaboration at fair with our products, posters and handbills, seminar: "FPGA IC in industrial products", Ljubljana, Slovenia, May 24, 2005.

Marijan Španer: “Presentation of Institute of robotics at 38th International trade fair in Celje,” exibits, video presentation, lecture, Celje, Slovenia, Sept. 7, 2005.

Boris Curk: “Introduction to Matlab/Simulink for students,” course on the use of Matlab/Simulink program package for students, Maribor, Slovenia, Sept. 29, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Asst. Prof. Dr. Boris Curk: Reviewer, international congress, 16th Trienal World Congress of the International Federation of Automatic Control, Praga, Czech Republic, July 4– 8, 2005.

Institute of Mathematics and Physics MP - 1

INSTITUTE OF MATHEMATICS AND PHYSICS

Head: Prof. Dr. Vitodrag Kumperščak Phone: +386 2 220 73 90 E-mail: [email protected] URL: http://www.mp.feri.uni-mb.si

Members of the Institute of Mathematics and Physics are participating in research activities at the Faculty for Electrical Engineering and Computer Sciences and at the Institute for Mathematics, Physics, and Mechanics at the University in Ljubljana. Because our research work is not unilaterally organised, we are reporting on individual contributions.

MP - 2 Institute of Mathematics and Physics

Members of the Institute of Mathematics and Physics are organised into one laboratory.

Institute of Mathematics and Physics Head: Prof. Dr. Vitodrag Kumperščak

Applied Mathematics Laboratory Head: Prof. Dr. Vitodrag Kumperščak

Applied Mathematics Laboratory

Head: Prof. Dr. Vitodrag Kumperščak

Employees: Assoc. Prof. Dr. Gorazd Lešnjak; Asst. Prof. Dr. Boštjan Brešar; Melita Gorše Pihler (till Sept. 2005), BSc; Vladimir Grubelnik, MSc; Milan Kutnjak, MSc; Dr. Marjan Logar; Assoc. Prof. Dr Tatjana Petek; Dr. Iztok Peterin; Jasna Strnad, BSc; Aleksandra Tepeh Horvat, MSc, Rija Erveš, BSc (from Sept. 2005). Applied Mathematics Laboratory MP - 3

APPLIED MATHEMATICS LABORATORY

Head: Prof. Dr. Vitodrag Kumperščak Phone: +386 2 220 73 90 E-mail: [email protected]

PUBLICATIONS

Boštjan Brešar, “Vizing-like conjecture for the upper domination of Cartesian products of graphs - the proof,” Electron. j. comb. (On line), Vol. 12(1), No. 12 (6 pp.), 2005.

Boštjan Brešar, Wilfried Imrich, Sandi Klavžar, “Reconstructing subgraph-counting graph polynomials of increasing families of graphs,” Discrete math., Vol. 297, No. 1-3, pp. 159-166, 2005.

Boštjan Brešar, Wilfried Imrich, Sandi Klavžar, Blaž Zmazek, “Hypercubes as direct products,” SIAM j. discrete math., Vol. 18, No. 4, pp. 778-786, 2005.

Boštjan Brešar, Pranava K. Jha, Sandi Klavžar, Blaž Zmazek, “Median and quasi-median direct products of graphs,” Discuss. Math., Graph Theory, Vol. 25, No. 1-2, pp. 183-196, 2005.

Vladimir Grubelnik, Marko Marhl, “Drop formation in a falling stream of liquid,” Am. j. phys., Vol. 73, No. 5, pp. 415-419, May 2005.

Sandi Klavžar, Iztok Peterin, “Characterizing subgraphs of Hamming graphs,” J. graph theory, Vol. 49, No. 4, pp. 302-312, 2005.

Janko Marovt, Tatjana Petek, “Automorphisms of Hilbert space effect algebras equipped with Jordan triple product, the two-dimensional case,” Publ. math. (Debr.), Vol. 66, No. 1/2, pp. 245-250, 2005.

Tatjana Petek, “A note on unitary similarity preserving linear mappings on B(H),” Linear algebra appl., Vol. 394, pp. 217-224, 2005.

Iztok Peterin, “Characterizing flag graphs and induced subgraphs of Cartesian product graphs,” Order (Dordr.), Vol. 21, No. 4, pp. 283-292, 2004. MP - 4 Applied Mathematics Laboratory

Boštjan Brešar, Michael A. Henning, Douglas F. Rall, “Paired-domination of Cartesian products of graphs and rainbow domination,” 7th International Colloquium on Graph Theory ICGT '05, Giens, France, Sep. 2005.

Iztok Peterin, “Planar graphs and expansions procedures,” 22st LL-Seminar on Graph Theory 2005, Leipzig, Germany, aug. 2005, pp. 14.

Vladimir Grubelnik, Robert Repnik, Marko Marhl, “Energija, delo in toplota: eksperimentalna delavnica,” Naravoslovje v strokovnih in poklicnih šolah: zbornik seminarja, Rogaška Slatina, Slovenia, Feb. 2005, pp. 29.

Mitja Slavinec, Vladimir Grubelnik, Robert Repnik, Viktor Vajngerl, “Astronomija,” Družba, naravoslovje in tehnologija v predšolski vzgoji, osnovni in srednji šoli, Slovenia, pp. 9.

France Brešar, Boštjan Brešar, Analiza I, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

France Brešar, Boštjan Brešar, Analiza II, Maribor: Faculty of Electrical Engineering and Computer Science, Slovenia, 2005.

Samo Fošnarič, Marko Marhl, Vladimir Grubelnik, Poučevanje naravoslovja in tehnike v II. triadi osnovne šole: delovni učbenik za strokovno izpopolnjevanje učiteljev, Maribor: Pedagoška fakulteta, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Tatjana Petek: “Invertibility-preserving linear mappings from Mn to Mm,” lecture at conference, Calgary, Canada, June 29, 2005.

Boštjan Brešar: “Paired-domination of Cartesian products of graphs and rainbow domination,” lecture at conference, Hyeres, France, Sept. 13, 2005.

Milan Kutnjak: “Introduction to Matlab/Simulink for students,” course on the use of Matlab/Simulink program package for students, Maribor, Slovenia, Sept. 29, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Asst. Prof. Dr. Boštjan Brešar: Reviewer for Discrete Mathematics, referee of scientific articles. Applied Mathematics Laboratory MP - 5

Asst. Prof. Dr. Boštjan Brešar: Reviewer for Discussiones Math. Graph Theory, referee of scietific articles.

Assoc. Prof. Dr. Tatjana Petek: Reviewer for Linear Algebra and Applications, referee of scientific articles.

Assoc. Prof. Dr. Gorazd Lešnjak: Reviewer for Linear Algebra and Applications.

Iztok Peterin, MSc: Reviewer for Discussiones Math. Graph Theory.

Institute of Computer Science CS - 1

INSTITUTE OF COMPUTER SCIENCE

Head: Prof. Dr. Viljem Žumer Phone: ++386 2 220 74 50 E-mail: [email protected] URL: http://www.cs.feri.uni-mb.si/rac/

The Institute of Computer Science has 49 employees, including 5 full professors, 2 associate professors, 5 assistant professors, assistants, researchers, and technical staff. The main activities of the Institute of Computer Science are teaching graduate and postgraduate courses and research work. Research work currently being performed includes the national programme group Computer Systems, Methodologies and Intelligent Services projects financed by the Ministry of Higher Education, Science and Technology, 1 fundamental research project, 4 development research projects, 18 international projects, 4 applied research projects and 2 industrial projects.

During the past year, the institute has published more than 100 papers, presented a great deal of research work, and in addition, organised meetings, conferences, and visits to other institutions. The main research areas of the institute are: computer graphics, artificial intelligence, computer animation, multimedia, programming languages, computer architecture, internet computing, medical informatics, software engineering, signal and image processing, and system software.

CS - 2 Institute of Computer Science

Members of the institute are divided into six laboratories and seven centres of technology.

Institute of Computer Science Head: Prof. Dr. Viljem Žumer

Computer Graphics and Computer Architecture Artificial Intelligence and Languages Laboratory Laboratory Head: Head: Prof. Dr. Nikola Guid Prof. Dr. Viljem Žumer

System Design System Software Laboratory Laboratory Head: Head: Prof. Dr. Peter Kokol Prof. Dr. Damjan Zazula

Heterogeneous Computer Geometric Modelling and Systems Laboratory Multimedia Algorithms Laboratory Head: Assoc. Prof. Dr. Milan Ojsteršek Head: Prof. Dr. Borut Žalik

Institute of Computer Science CS - 3

Computer Graphics and Artificial Intelligence Laboratory

Head: Prof. Dr. Nikola Guid

Employees: Dr. Simon Kolmanič; Damjan Strnad, MSc; Andrej Nerat

Centre for Computer Animation and Multimedia Head: Prof. Dr. Niko Guid

Computer Architecture and Languages Laboratory

Head: Prof. Dr. Viljem Žumer

Employees: Assoc. Prof. Dr. Marjan Mernik; Asst. Prof. Dr. Janez Brest; Matej Črepinšek; Tomaž Kosar; Sašo Greiner, MSc; Damijan Rebernak; Borko Bošković; Marjan Horvat; Simon Tutek

Centre for Programming Languages Head: Prof. Dr. Viljem Žumer

System Design Laboratory

Head: Prof. Dr. Peter Kokol

Employees: Asst. Prof. Dr. Milan Zorman; Petra Povalej; Gregor Štiglic; Matej Mertik; Mateja Verlič

Centre for Medical Informatics Head: Prof. Dr. Peter Kokol

System Software Laboratory

Head: Prof. Dr. Damjan Zazula

Employees: Asst. Prof. Dr. Božidar Potočnik; Dr. Danilo Korže; Dr. Andrej Šoštarič; Dr. Dean Korošec; Dr. Mitja Lenič; Dr. Aleš Holobar; Boris Cigale, MSc; Matjaž Divjak MSc; Smiljan Šinjur; Dušan Heric; Jurij Munda; Daniel Bernard; Rok Istenič

Centre for Interactive Network Applications CS - 4 Institute of Computer Science

Head: Prof. Dr. Damjan Zazula Centre for Biomedical Signal and Image Processing Head: Prof. Dr. Damjan Zazula

Heterogeneous Computer Systems Laboratory

Head: Assoc. Prof. Dr. Milan Ojsteršek

Employees: Ervin Schaffranietz, MSc; Branko Horvat, MSc; Borut Gorenjak, MSc; Albin Bregant; Janez Brezovnik

Centre for Heterogeneous Processing Head: Assoc. Prof. Dr. Milan Ojsteršek

Laboratory for Geometric Modelling and Multimedia Algorithms

Head: Prof. Dr. Borut Žalik

Employees: Asst. Prof. Dr. David Podgorelec; Dr. Matej Gomboši; Dr. Sebastian Krivograd; Dr. Gregor Klanjšek; Mirko Zadravec; Vid Domiter; Boštjan Pivec; Denis Špelič

Centre for Geometric Modelling Head: Prof. Dr. Borut Žalik Computer Graphics and Artificial Intelligence Laboratory CS - 5

COMPUTER GRAPHICS AND ARTIFICIAL INTELLIGENCE LABORATORY

Head: Prof. Dr. Nikola Guid Phone: +386 2 220 74 70 E-mail: [email protected]

PUBLICATIONS

Bogdan Lipuš, Nikola Guid, “A new implicit blending technique for volumetric modelling,” Vis. comput., Vol. 21, No. 1-2, pp. 83-91, febr. 2005.

Andrej Nerat, Nikola Guid, “Časovna analiza gradnje šumov,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 47-50.

PRESENTATIONS BY THE LABORATORY MEMBERS

Nikola Guid: “Curves and surfaces in CAGD,” lecture at MPS IJS, Ljubljana, Slovenia, Mar. 9, 2005.

Nikola Guid: “Illumination models and algorithms,” lecture at MPS IJS, Ljubljana, Slovenia, Mar. 10, 2005.

Nikola Guid: “Volume rendering,” lecture at MPS IJS, Ljubljana, Slovenia, Dec. 8, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Nikola Guid: Programme committee member, international conference, Information society 2005, Ljubljana, Slovenia, Oct. 10–17, 2005. CS - 6 Computer Graphics and Artificial Intelligence Laboratory

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Nikola Guid, During our visit in Jovan Hadži Institute of Biology Dr. Simon Kolmanič, ZRC SAZU introduction talkings with potential Andrej Nerat: partner have been held, where the research field of both sides and research results have been presented, formal call, Ljubljana, Slovenia, Oct. 26, 2005.

Prof. Dr. Nikola Guid, Visit of institute ZEMRIS at the Faculty of Dr. Simon Kolmanič: electrotehnics and computing and search for potential partners for common projects, formal call, Zagreb, Croatia, Dec. 9, 2005.

GUESTS AND VISITORS

Branko Vreš Search for potential partners for common projects, (Jovan Hadži Institute Of Biology ZRC formal call, Oct. 17, 2005. SAZU, Ljubljana, Slovenia):

Computer Architecture and Languages Laboratory CS - 7

COMPUTER ARCHITECTURE AND LANGUAGES LABORATORY

Head: Prof. Dr. Viljem Žumer Phone: +386 2 220 74 50 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Industrial projects

2005-ZT-L-01 Izdelava programske opreme za nadzor in upravljanje dela procesa proizvodnje (Software development for control and managment of production process) Leader: Asst. Prof. Dr. Janez Brest (Faculty of Electrical Engineering and Computer Science) Participants: Borko Boškovič, Sašo Greiner, Damijan Rebernak, Prof. Dr. Viljem Žumer Financed by: Lestro Ledinek, d. o. o.

The project is a continuation of our previus projects within the industry. The main objective of this project was upgrading an information system, which is currently used in woodwork manufacturing.

ELL Programska oprema za elektronsko vodenje likvidacijskih listov (Electronic support for digital signings of documents) Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science) Participants: Matej Črepinšek, Tomaž Kosar CS - 8 Computer Architecture and Languages Laboratory

Financed by: Raiffeisen Krekova Banka, d. d. The project goal is to develop software for company expenses. This project was carried out in Lotus Notes platform and includes document input, interactive monitoring and support for payment process. The main features are centralized control of documents and electronic notification of people involved in signing processes.

International projects

BI-US/05-06/009 Grammar Interface Technology and Applications in Software Engineering Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Barrett Bryant (University of Alabama at Birmingham) Participants: Damijan Rebernak, Faizan Javed, Alan Sprague, Tomaž Kosar, Jeff Gray, Prof. Dr. Viljem Žumer, Asst. Prof. Dr. Janez Brest, Matej Črepinšek Project partners: University of Alabama at Birmingham Financed by: Slovenian Research Agency

Grammatical inference (grammar induction or language learning) is a process of learning a grammar from positive and/or negative sentences. Machine learning of grammars finds many applications in syntactic pattern recognition, computational biology, natural language acquisition, software engineering, etc. In the previous project "BI-US/03-04/5 GenParse: Generating a parser from examples" we were successful in inferring context-free grammars for small domain-specific languages. Results are promising and more investigations need to be done. In the proposed project we would like to explore the ideas further to be applicable also for inferring real world grammars. Furthermore, we would like to explore the usability of grammatical inference also in other applications, such as metamodel recovering.

BI-PT/04-06-008 Grammar-based Systems Leader: Pedro Henriques (University of Minho), Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science) Participants: Maria Joao Pereira Varanda, Prof. Dr. Viljem Žumer, Matej Črepinšek, Tomaž Kosar, Damijan Rebernak Project partners: University of Minho Financed by: Slovenian Research Agency

The project is a continuation of our previous successful project entitled "Automatic generation Computer Architecture and Languages Laboratory CS - 9

of Language-based tools" where we have shown that from formal language definition (attribute grammars) not just complete compiler/interpreter can be automatically generated but also many other language-based tools such as: syntax-directed editors, type checkers, visualizers, animators, etc. In the project the importance of grammars (e.g. context-free grammars, attribute grammars) in various research fields (e.g. software engineering, information theory, evolutionary computations) is further explored. Their benefits are investigated and compared to ordinary systems. We have already started working on one such grammar-based system - GAPS: Grammatical Approach to Problem Solving.

Completed research projects 2005

International project

BI-BA/03-05-002 Implementation of Domain-Specific Languages: Evaluation of Approaches Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Gabriel Baum (Universidad Nacional de La Plata) Participants: Matej Črepinšek, Tomaž Kosar, Damijan Rebernak, Pablo E. Martinez Lopez, Asst. Prof. Dr. Janez Brest, Prof. Dr. Viljem Žumer, Pablo Barrientos Project partners: Universidad Nacional de La Plata Financed by: Republic of Argentina, Slovenian Research Agency

Duration: Jan. 2003 to Dec. 2005

A domain-specific language (DSL) is a programming language for solving problems in a particular domain and provides built-in abstractions and notations for that domain. Domain- specific languages are usually small, more declarative than imperative, and more attractive than general-purpose languages for a variety of applications because of easier programming, systematic reuse and easier verification. However, the benefits of DSLs are not free. Without appropriate methodology and tools, the up-front investment for DSL support can exceed the savings obtained by using a DSL for application development. In this project various DSL implementation approaches are evaluated and compared with the aim to find advantages and disadvantages of particular approaches. CS - 10 Computer Architecture and Languages Laboratory

PUBLICATIONS

Matej Črepinšek, Marjan Mernik, Barrett Richard Bryant, Faizan Javed, Alan Sprague, “Inferring context-free grammars for domain-specific language,” Electronic notes in theoretical computer science, No. 141, pp. 99-116, 2005.

Matej Črepinšek, Marjan Mernik, Faizan Javed, Barrett Richard Bryant, Alan Sprague, “Extracting grammar from programs: evolutionary approach,” SIGPLAN not., Vol. 40, No. 4, pp. 39-46, 2005.

Matej Črepinšek, Marjan Mernik, Viljem Žumer, “Extracting grammar from programs: Brute Force approach,” SIGPLAN not., Vol. 40, No. 4, pp. 29-38, 2005.

Sašo Greiner, Janez Brest, Viljem Žumer, “Načrtovanje porazdeljene arhitekture za simultano izvajanje programskih bremen,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 91-96, 2005.

Sašo Greiner, Damijan Rebernak, Janez Brest, Viljem Žumer, “Z0 - a tiny experimental language,” SIGPLAN not., Vol. 40, No. 8, pp. 19-28, Aug. 2005.

Pedro Rangel Henriques, Maria Joao Varando Pereira, Marjan Mernik, Mitja Lenič, Jeffrey G. Gray, Hui Wu, “Automatic generation of language-based tools using the LISA system,” IEE proc., Softw. (Print), Vol. 152, No. 2, pp. 54-69, Apr. 2005.

Marjan Mernik, Jan Heering, Anthony M. Sloane, “When and how to develop domain-specific language,” ACM computing surveys, Vol. 37, No. 4, str. 316-344, 2005

Marjan Mernik, Matej Črepinšek, “Prolog and automatic language implementation systems,” Acta electrotech. inform., Vol. 5, No. 3, pp. 42-49, 2005.

Marjan Mernik, Tomaž Kosar, Viljem Žumer, “A note on aspect, aspect-oriented and domain- specific languages,” Acta electrotech. inform., Vol. 5, No. 1, pp. 5-12, 2005.

Marjan Mernik, Viljem Žumer, “Incremental programming language development,” Comput. syst. struct., No. 31, pp. 1-16, 2005.

Xiaoqing Wu, Barrett Richard Bryant, Jeffrey G. Gray, Marjan Mernik, “Applying object- orientation and aspect-orientation in teaching domain-specific language implementation,” Journal of computing sciences in colleges, Vol. 21, Iss. 2, pp. 335-340, 2005.

Borko Bošković, Sašo Greiner, Janez Brest, Viljem Žumer, “The representation of chess game,” ITI 2005: proceedings of the 27th International Conference on Information Technology Interfaces, Cavtat, Croatia, Jun. 2005, pp. 381-386. Computer Architecture and Languages Laboratory CS - 11

Borko Bošković, Sašo Greiner, Janez Brest, Viljem Žumer, “Učenje računalniškega šaha z uporabo algoritma diferencialne evolucije,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 71-74.

Janez Brest, Borko Bošković, Sašo Greiner, Viljem Žumer, “Nastavitev parametrov pri algoritmu diferencialne evolucije,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 79-82.

Janez Brest, Štefan Brest, Janez Žerovnik, “Primerjava hevrističnih algoritmov za trgovskega potnika,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 41-44.

Janez Brest, Sašo Greiner, Borko Bošković, Viljem Žumer, “A heuristic algorithm for function optimization,” MIPRO 2005: 28. međunarodni skup, Opatija, Croatia, Jun. 2005, pp. 91-94.

Janez Brest, Janez Žerovnik, “A heuristic for the asymmetric traveling salesman problem,” MIC 2005, The 6th Metaheuristics International Conference, Dunaj, Austria, Aug. 2005, pp. 145-150.

Matej Črepinšek, Marjan Mernik, Barrett Richard Bryant, Faizan Javed, Alan Sprague, “Inferring context-free grammars for domain-specific language,” 5th Workshop on Language Descriptions, Tools and Applications, Edinburgh, UK, 2005, pp. 64-81.

Iztok Fister, Bogdan Filipič, Marjan Mernik, “3-barvanje grafov z evolucijskimi algoritmi,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 63-66.

Marjan Horvat, Marjan Mernik, Viljem Žumer, “Primerjava pristopov SPEA2, NSGA-II in PESA- II na WFG testnih funkcijah,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 87-90.

Faizan Javed, Marjan Mernik, Barrett Richard Bryant, Jeffrey G. Gray, “A grammar-based approach to class diagram validation,” 4th international workshop on Scenarios and state machine: models, algorithms and tools (SCESM'05).

David Krmpotić, Tomaž Kosar, Marjan Mernik, Viljem Žumer, “Extending open compilers,” ITI 2005: proceedings of the 27th International Conference on Information Technology Interfaces, Cavtat, Croatia, Jun. 2005, pp. 645-650.

Damijan Rebernak, Matej Črepinšek, Marjan Mernik, “Spletna storitev za generiranje prevajalnika,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 15-18. CS - 12 Computer Architecture and Languages Laboratory

Damijan Rebernak, Milan Zorman, Mitja Lenič, “Določanje mejne odločitvene poti z uporabo metode podpornih vektorjev,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 146-149.

Hui Wu, Jeffrey G. Gray, Suman Roychoudhury, Marjan Mernik, “Weaving a debugging aspect into domain-specific language grammars,” Applied computing 2005: proceedings of the 2005 ACM symposium on applied computing, Santa Fe, New Maxico, USA, Mar. 2005, Vol. 2, pp. 1370-1374.

Xiaoqing Wu, Barrett Richard Bryant, Jeffrey G. Gray, Marjan Mernik, “Pattern transformation for two-dimensional separation of concerns,” Proceedings of the 1st International workshop on the Modeling and analysis of concerns in software (MACS 2005), pp. 39-43.

Xiaoqing Wu, Suman Roychoudhury, Barrett Richard Bryant, Jeffrey G. Gray, Marjan Mernik, “A two-dimensional separation of concerns for compiler construction,” Applied computing 2005: proceedings of the 2005 ACM symposium on applied computing, Santa Fe, New Maxico, USA, Mar. 2005, Vol. 2, pp. 1365-1369.

Janez Brest, Janez Žerovnik, “A heuristic for the asymmetric traveling salesman problem,” MIC 2005, The 6th Metaheuristics International Conference, August 22-26, 2005, Vienna, Austria, pp. 59.

Viljem Žumer, Janez Brest, Objektno programiranje v C++, Maribor: Faculty of Electrical Engineering and Computer Science, Inštitut za računalništvo, Slovenia, 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Marjan Mernik: “Automatic generation of language-based tools and grammar-based systems”, lecture, presented at The University of Alabama, Department of Computer Science, Tuscaloosa, Mar. 7, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Asst. Prof. Dr. Janez Brest: Reviewer for IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

Asst. Prof. Dr. Janez Brest: Reviewer for Journal of Computing and Information Technology.

Assoc. Prof. Dr. Marjan Mernik: Reviewer for Data & Knowledge Engineering. Computer Architecture and Languages Laboratory CS - 13

VISITS TO OTHER INSTITUTIONS

Assoc. Prof. Dr. Marjan Mernik: Research work under the project "Grammar Inference Technology and Applications in Software Engineering", research work, Birmingham, United States, Feb. 24 to Mar. 22, 2005.

Assoc. Prof. Dr. Marjan Mernik: Research work under the project "Grammar Inference Technology and Applications in Software Engineering", research work, Birmingham, United States, June 16 to Aug. 2, 2005.

Tomaž Kosar, Summer School on Generative and Damijan Rebernak: Transformational Techniques in Software Engineering, seminar participation, Braga, Portugal, July 4–8, 2005.

Damijan Rebernak: Research work under the project "Implementation of Domain-Specific Languages: Evaluation of Approaches", research work, Buenos Aires, Argentina, Nov. 20 to Dec. 5, 2005.

Matej Črepinšek, Research work under the project "Grammar Assoc. Prof. Dr. Marjan Mernik: Inference Technology and Applications in Software Engineering", research work, Birmingham, United States, Dec. 4–13, 2005.

Assoc. Prof. Dr. Marjan Mernik: Research work under the project "Grammar-based Systems", research work, Braga, Portugal, Dec. 26–31, 2005.

GUESTS AND VISITORS

Pablo E. Martinez Lopez Research work under the project "Implementation (Universidad Nacional de La Plata, of Domain-Specific Languages: Evaluation of Buenos Aires, Argentina): Approaches", research work, Feb. 14–28, 2005.

Pedro Henriques, Research work under the project "Grammar-based Maria Joao Pereira Varanda Systems", research work, Feb. 18–23, 2005. (University of Minho, Braga, Portugal): CS - 14 Computer Architecture and Languages Laboratory

Barrett Bryant Research work under the project "Grammar (University of Alabama at Birmingham, Inference Technology and Applications in Software Birmingham, United States): Engineering", research work, June 7–15, 2005.

Maria Joao Pereira Varanda, Research work under the project "Grammar-based Pedro Henriques Systems", research work, Oct. 4–9, 2005. (University of Minho, Braga, Portugal):

Wolfgang Lohmann Overview of research work at Laboratory for (University of Rostock, Rostock, computer architecture and programming languages, Germany): research work, Nov. 5–11, 2005.

Jan Heering Initial preparation on writing the book "Domain- (Centrum voor Wiskunde en Specific Languages: A Systematic Approach", visit, Informatica, Amsterdam, The Nov. 15, 2005. Netherlands):

System Design Laboratory CS - 15

SYSTEM DESIGN LABORATORY

Head: Prof. Dr. Peter Kokol Phone: +386 2 220 74 57 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

V2-0131 MAGSIS MAGSIS - Multi-agentni sistemi v Slovenijo (MAGSIS - Multi-agent systems to Slovenia) Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science) Participants: Mateja Verlič, Petra Povalej, Gregor Štiglic Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of the Information Society

The MAGSIS project focuses on agent technologies research and agent-based applications in slovenian information society. The use of agent systems in Slovenia will enable higher productivity in information society and the competitiveness of Slovenia in electronic services and information IT markets.

International projects

MERCOS (SLO-ITA MERCOS - Mesuring Reusability by Complexity Similarity 8A/2002-2005) Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science), Maurizio Pighin (Universita di Udine) Participants: Asst. Prof. Dr. Milan Zorman, Dr. Mitja Lenič, Petra Povalej CS - 16 System Design Laboratory

Project partners: Universita degli studi di Udine, Facolta di Ingegneria Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

Reusability and component based software engineering is one of the hottest topics in software development. It has been shown that software development is a complex and complicated process. A large software system consists of various modules which are sometimes unclearly distinguishable. Each of these modules can be characterized by some design patterns in terms of attribute measures – it would be quite useful to be able to base reusability engineering on such attribute measurements. On the other hand, one of the fastest growing areas in computer science is software engineering, and engineering has always been inherently coupled with measurement. Regarding the complexity of the software development process, it is interesting to note that recently different attempts have been made to use the science of complexity in the measurement area.

METOD 2004- METOD - MetaTool for Educational platform Design 176004 Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science) Participants: Mateja Verlič, Asst. Prof. Dr. Milan Zorman, Gregor Štiglic, Matej Mertik, Petra Povalej Project partners: Faculty of Electrical Engineering and Computer Science, TelabGesbR, Czech Technical University Prague, Department Educational Sciences and Media Research, Western Greece Development Center, ZEUS Consulting S.A.-LogicDIS Group, IDEC S.A., Gjovik College – Higher Education Institution, The Centre for interdisciplinary and multidisciplinary research and studies, II. high school Maribor, School of textiles Maribor, Secondary school of health-care, Intelligent Computer Systems Centre The rapid advancement in ICT including multimedia, virtual reality, intelligent systems and telecommunications (i.e. Internet) enables the development of computer supported educational platforms (CSET) which can improve the quality, user friendliness and accessibility of training, education and lifelong learning. The major advantage of such type of learning is the immediate feedback to the learner. There is no waiting period for correction and, therefore, learners do not “practice their mistakes”. The various channels, through which the educational information is brought to the student largely to improve efficiency by employing both brain hemispheres. In addition computer supported platforms are the basis for supporting or even developing new innovative types of learning (innovative pedagogy), i.e. problem based learning, evidence based learning, etc. But literature overview, recent research supported by the consortium’s own experiences gained in various projects and results of some pre-studies noted various disadvantages of current CSETs, most important being: System Design Laboratory CS - 17

• that after the novelty effect of drill and practice wears off, the motivational power is lost, • the platforms are static - the educators or trainees can not adapt them to specific environments (for example disabled people), changed educational requirements, new educational programmes, etc., • normally, the educators or trainees can not develop such platforms by themselves, because of the lack of knowledge, the lack of time, non existence of platform development paradigm, etc. The specific aims of the projects are: • To design a general computer supported educational platform development paradigm. • To develop a framework for integrating machine learning and machine intelligence in the educational platforms, enabling self adaptation according to special educators and trainees needs and characteristics. • To design a metatool enabling all kinds of educators (including parents or senior family members) to develop, adapt and maintain their own educational platforms without great effort. • To provide courses, conferences and workshops for target groups on above three topics. • To disseminate the project achievements to wide audience using both ICT and conventional approaches. The long term aims are to improve the skills and competences of people by the integration of new computer-supported educational platforms specially designed for specific environments and requirements into the training and educational process. The paradigm and metatool will enable the building of educational and training environments, supporting and developing innovative pedagogical approaches and curricula, accelerate e-Learning and lifelong learning, encourage the development of teaching and learning materials, and building of virtual learning environments. As a result the quality, user friendliness and accessibility of training and educational processes will be significantly improved. Concurrently ICT enables educational platforms to be accessible to a variety of different target groups (trainees, employed and unemployed workers, people with disabilities, etc) with the additional advantages of asynchronous learning, distant learning and lifelong acquisition of skills and competencies. Citing the above two programme objectives will be supported »to improve the skills and competencies of people, …« and »to improve the quality of, and access to, continuing vocational training …« together with the call priority “New technologies”. Wider EU initiatives like lifelong learning, innovative pedagogy, e – Learning supporting basic objectives of learning (such as active citizenship, personal fulfilment, social inclusion and employability/adaptability) will also be taken into account. They will be addressed using all CS - 18 System Design Laboratory

accessible new information technologies like: Internet, wireless communication, ultra high performance computers, virtual reality, intelligent systems, agent technology and all the related knowledge. The environment and the platforms will be accessible to all citizens through the internet and both will be user friendly, flexible and adaptable for all levels of education, for all ICT skill levels and also for people with disabilities.

ISoQII (SI-PT 2004- ISoQII - Improving software quality by mastering complexity 2005-1) Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science), Ana Isabel Cardoso (University of Madeira) Participants: Mateja Verlič, Gregor Štiglic, Matej Mertik, Petra Povalej, Asst. Prof. Dr. Milan Zorman Project partners: University of Madeira, Faculty of Electrical Engineering and Computer Science Financed by: Office for International Relations in Science and Higher Education, Ministry of Education, Science and Sport of the Republic of Slovenia

ISoQ II is the continuation of the current Slovenian – Portuguese ISoQ project and the EU 5th framework project SQUFOL. Its aim is to further gain insight into the understanding of software processes, its evolution and quality. The main objectives are: 1. Metrics: As in every scientific discipline, discovering and research requires the ability to measure. Unfortunately, in the field of software design, current software metrics revealed to be unsuccessful. During the ISoq we developed a new universal physically-based software complexity metrics called alfa. Our aim is to validate it and develop further metrics based on multidimensional Brownian motion, entropy and information content. 2. Data mining: use data mining techniques to reveal »software laws« and explore/discover new knowledge . The volume of the data collected with new metrics will be too large for manual manipulation – so automatic techniques should be used. We will develop a machine learning algorithm tailored for software process data. 3. Integrate the new metrics in the holistic way into the software developmet process.

BI-ES/04-05-2003 Cellular automata for classification Leader: Asst. Prof. Dr. Milan Zorman (Faculty of Electrical Engineering and Computer Science), Jose Luis Sanches de la Rosa (University of La Laguna, Tenerife) Participants: Gregor Štiglic, Mateja Verlič, Matej Mertik, Petra Povalej, Asst. Prof. Dr. Milan Zorman, Dr. Mitja Lenič System Design Laboratory CS - 19

Project partners: University of La Laguna, Tenerife, Faculty of Electrical Engineering and Computer Science Financed by: Ministry of External Affairs of Spain, Ministry of Education, Science and Sport of the Republic of Slovenia

The use of intelligent systems and machine learning methods is becoming more and more popular in fields such as medicine, chemistry and biology. In these fields we are not faced only with technical problems, but also with lack of confidence towards machine learning techniques due to lack of knowledge. In some cases the methods are incapable of presenting the deduction process powerfully enough, and vice versa. To solve this problem we started to develop hybrid methods a few years ago. Hybrids were aimed at combining the advantages of the joined methods which contributed to the quality of the acquired knowledge. One of the main goals of each method for intelligent system construction is an induction of a classifier with high classification accuracy. Since this is a very demanding task that cannot always be reached using existing methods, our novel idea is to use cellular automata (CA) for classification purposes. CA are discrete dynamical systems whose behavior is completely specified in terms of a local relationship. Space CA use is represented by a uniform grid, with each cell containing a few bits of data; time advances in discrete steps and the laws of the "universe" are expressed in, say, a small look-up table, through which at each step, each cell computes its new state from that of its close neighbours. Thus, the system's laws are local and uniform. One of the main advantages of the CA used for classification compared to other single and ensemble methods, is the social aspect - groups of different methods which defend a common decision are formed and they altogether contribute to the final classification which is not made sequentially, as in the case of ensemble methods. Within the framework of the project, a CA will be presented as a powerful hybrid that can geometrically combine different methods for intelligent system construction into one classifier. We will implement the classical methods of machine learning, already existing hybrid methods of machine learning and we will also develop and test completely new hybrid methods. Since the explanation power of the CA depends on the explanation power of the methods included in a hybrid, the induction of a classifier CA can also be influenced to improve their explanation power, in such a way for the domain experts to be able to easily follow the decision making process. The quality of the novel approach will be tested on several public and real-world databases and also compared to other methods on the basis of classification accuracy and the quality of extracted knowledge evaluated by domain experts. We can pose our problem of supervised classifier design in terms of the input and output of a top level task. This trained classifier consists of a complete procedure for predicting the class or label of a new unlabelled subject that will fail, on average, with the probability supplied, assuming that the subject is extracted from the same population that the sample used in the design. It is assumed that the design procedure cannot exert control over the composition of the training sample that is given externally. The main specification of the classifier is its performance, as measured by the mean probability of error. The design of a classifier can be considered as a complex search in a large space of objects that satisfies multiple constraints. CS - 20 System Design Laboratory

One of the criteria for subdividing the design problem is the functional decomposition, which partitions the problem when building several components based on their functions. In the classifier process, several components executing particular functions can be identified. First, a selection or pruning of the set of original features can be considered. Second, a transformation of the pruned data can take place to adapt or condition the data. Third, the chosen classifier has to predict the final class of the subject from the data. Each of these stages must be designed as part of the global classifier. There are deep couplings between the stages, and they have to be tuned adequately using domain knowledge. A knowledge- based system (KBS) is proposed to automate the design process of a classifier following the guidelines suggested above. The structure of the domain knowledge allows us to reduce the complexity of the problem by constraining the space of possible designs. Through the use of heuristics that favour robustness over complexity, it is expected to attain reliably performing classifiers. The KBS structure is made explicit to favour the explanation of the classifier construction’s decisions. Both approaches (CA and KBS) are focused on different search strategies with the common aim of making classifiers cooperate. As an example, the initial methods to the first approach could be provided by the output of the KBS. In the project we will try to achieve the next objectives: (1) to develop a novel approach for machine learning with the use of CA and KBS; (2) to achieve results with higher classification accuracy and explanation power, compared with already existing methods; (3) to acquire and evaluate new knowledge from different domains with the help of new approach; (4) to prove that by using different machine learning methods in one CA it is possible to achieve better classification accuracy as with the use of ensemble methods.

BI-CZ/05-06/011 Multi-Agent Systems for Decision Support in Medicine II Leader: Lenka Lhotska (Czech Technical University of Prague), Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science) Participants: Petra Povalej, Gregor Štiglic, Matej Mertik, Asst. Prof. Dr. Milan Zorman, Mateja Verlič Project partners: Czech Technical University in Prague, Faculty of Electrical Engineering Financed by: Slovenian Research Agency

The project is focused on the utilization of a multiagent system as a platform for the development of decision support in the medical domain. A knowledge-based model of the agents’ mutual awareness (social knowledge) is presented. A tri-base acquaintance (3bA) model is used for formalization of the agent’s social behaviour knowledge and agent’s cooperation neighbourhood knowledge. The project focuses particularly on analyzing the content of 3bA knowledge bases for applications in medical decision support. System Design Laboratory CS - 21

The applicability of agent architecture developed in the Gerstner Laboratory has been proven by applications in several areas, e.g. in the field of production planning and scheduling (system ProPlanT), supply chain management (project ExPlanTech), coalition formation (system CPlanT). The intended application we focus on is decision support in medical diagnostics.

PUBLICATIONS

Vili Podgorelec, Peter Kokol, Milojka Molan Štiglic, Marjan Heričko, Ivan Rozman, “Knowledge discovery with classification ruls in a cardiovascular dataset,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S39-S49, 2005.

Petra Povalej, Mitja Lenič, Milan Zorman, Peter Kokol, Dejan Dinevski, “Accuracy of intelligent medical systems,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S95-S105, 2005.

Peter Kokol, Marko Kokol, Dejan Dinevski, “Teaching evolution using visual simulation,” Br. j. educ. technol. (Print), Vol. 36, No. 3, pp. 563-566, 2005.

Vida Gönc, Helena Blažun, Dušanka Mičetić-Turk, Peter Kokol, “New educational methods - challenges and opportunities of E-learning in nursing education,” Transforming healthcare through research, education & technology: conference proceedings, Dublin, Irska, 2005, pp. 262-267.

Peter Kokol, Dušanka Mičetić-Turk, Helena Blažun, “Integrating working experiences into nursing education with intelligent tools,” Global workforce development: defining, developing, and managing, 2005.

Miljenko Križmarić, Tanja Žmauc, Dušanka Mičetić-Turk, Gregor Štiglic, Peter Kokol, “Time allocation simulation model of clean and dirty pathways in hospital environment,” Proceedings - IEEE Symposium on Computer-Based Medical Systems, Dublin, Irska, Jun. 2005, pp. 123- 127.

Mitja Lenič, Peter Kokol, Milan Zorman, Petra Povalej, Bruno Stiglic, Ryuichi Yamamoto, “Improved knowledge mining with the multimethod approach,” Foundations of data mining and knowledge discovery (Studies in computational intelligence, vol. 6), pp. 305-318.

Matej Mertik, Peter Kokol, Bojan Zalar, “Gaining features in medicine using various data- mining techniques,” IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 21-24. CS - 22 System Design Laboratory

Matej Mertik, Peter Kokol, Bojan Zalar, “Gaining features in medicine using various data- mining techniques,” IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005.

Matej Mertik, Miljenko Križmarić, Zoran Zabavnik, Milan Zorman, Gregor Štiglic, Dušanka Mičetić-Turk, Peter Kokol, “Dynamic datamining with complexity theory - the case of prognosing sepsis,” EMBEC'05: proceedings, European Medical and Biological Engineering Conference, Praga, Czech Republic, Nov. 2005.

Dušanka Mičetić-Turk, Helena Blažun, Miljenko Križmarić, Nevenka Krčevski-Škvarč, Anton Koželj, Peter Kokol, Štefek Grmec, “Simulacije v medicini in zdravstveni negi - prve izkušnje v Simulacijskem centru Visoke zdravstvene šole Univerze v Mariboru,” Zbornik predavanj, 4 pp.

Dušanka Mičetić-Turk, Peter Kokol, Zmago Turk, Helena Blažun, “Continuing professional education and work-integrated learning - a necessary condition for nurses' professional development,” Global workforce development: defining, developing, and managing, 11 pp..

Miroslav Palfy, Milan Zorman, “Razpoznavanje histoloških značilnosti z uporabo nevronskih mrež,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 330-333.

Miroslav Palfy, Milan Zorman, José Luis Sánchez, “Automatic identification of histological features in histological images using artificial neural networks,” EMBEC'05: proceedings, European Medical and Biological Engineering Conference, Praga, Czech Republic, Nov. 2005.

Petra Povalej, Peter Kokol, Tatjana Welzer-Družovec, Bruno Stiglic, “Machine-learning with cellular automata,” Advances in intelligent data analysis VI: 6th international symposium on intelligent data analysis, IDA 2005, Madrid, Spain, Sep. 2005, pp. 305-315.

Petra Povalej, Miljenko Križmarić, Peter Kokol, Zlatko Pehnec, “Intelligent analysis of long- term patient survival after pacemaker implantation ,” Computers in cardiology 2005, Lyon, France, Vol. 32, pp. 251-254.

Petra Povalej, Mitja Lenič, Peter Kokol, “Improving ensembles with classificational cellular automata,” Intelligent data engineering and automated learning - IDEAL 2005: 6th international conference, Brisbane, Australia, Jul. 2005, pp. 242-249.

Damijan Rebernak, Milan Zorman, Mitja Lenič, “Določanje mejne odločitvene poti z uporabo metode podpornih vektorjev,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 146-149. System Design Laboratory CS - 23

Gregor Štiglic, Peter Kokol, “Intelligent patient and nurse scheduling in ambulatory health care centers ,” Innovation from biomolecules to biosystems, 27th annual international conference of the IEEE engineering in medicine and biology society, Shanghai, China, Sep. 2005.

Gregor Štiglic, Peter Kokol, “Patient and staff scheduling multi-agent system,” Proceedings, IEEE 3rd International conference on computational cybernetics, Mauritius, Apr., 2005, pp. 25- 28.

Gregor Štiglic, Peter Kokol, “Software reliability prediction using reduced mimetic classifiers,” Software engineering and applications: proceedings of the Ninth IASTED International conference on Software engineering and applications, November 14-16, 2005, Phoenix, AZ, USA, proceedings of the Ninth IASTED International conference on Software engineering and applications, Phoenix, AZ, USA, Nov. 2005, pp. 194-198.

Gregor Štiglic, Milan Zorman, Peter Kokol, “Knowledge extraction from microarray datasets using combined multiple models,” Foundation of semantic oriented data and web mining, pp. 75-80.

Mateja Verlič, Mitja Lenič, Peter Kokol, “Education and information e-health portal,” EMBEC'05: proceedings(IFMBE Proceedings, Vol. 11), European Medical and Biological Engineering Conference, Praga, Czech Republic, Nov. 2005.

Mateja Verlič, Milan Zorman, Matej Mertik, “iAPERAS - Intelligent Athlete's Personal Assistant,” Proceedings(Proceedings - IEEE Symposium on Computer-Based Medical Systems), Eighteenth IEEE symposium on computer-based medical systems, Dublin, Irska, Jun. 2005, pp. 134-138.

Milan Zorman, Peter Kokol, Matej Mertik, Gregor Štiglic, Viktor Vaupot, “Strengthening the edges in triangle 'economy - research - education',” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Oct. 2005, pp. 105-108.

Milan Zorman, Petra Povalej, Peter Kokol, J. L. Sánchez de la Rosa, J. I. Estévez, J. F. Sigut, “Možnosti uporabe evolucijsko grajenih odločitvenih dreves pri izgradnji orodja za obdelavo histoloških slik,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 131-134.

Helena Blažun, Vida Gönc, Peter Kokol, Dušanka Mičetić-Turk, “Distance education as option and opportunity in nursing education,” Informatics 2005: breaking the barriers of healthcare informatics: people, process & technology, Baltimore, Maryland, USA, 2005. CS - 24 System Design Laboratory

Ana Isabel Cardoso, Peter Kokol, Mitja Lenič, Rui Gustavo Crespo, “Comlexity-Based evaluation of the evolution of XML and UML systems,” Advances in UML and XML-based software evolution, pp. 308-321.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Peter Kokol: Chairman, international conference, The IASTED Conference Software Engineering 2005, Innsbruck, Austria, Feb. 15–17, 2005.

Prof. Dr. Peter Kokol: Programme committee member, conference, Biomedical Engineering 2005, Insbruck, Austria, Feb. 16–18, 2005.

Prof. Dr. Peter Kokol: Programme committee chairman, international conference, IEEE symposium on Computer Based Medical Systems, Dublin, Ireland, June 22–24, 2005.

Prof. Dr. Peter Kokol: Programme committee member, international conference, The 9th IASTED International Conference on Software engineering and Applications, Phoenix, Arizona, United States, Nov. 14–16, 2005.

Prof. Dr. Peter Kokol: Reviewer for Journal of Applied Systems Studies, editorial board.

Prof. Dr. Peter Kokol: Reviewer for IEEE Computer.

Prof. Dr. Peter Kokol: Reviewer for IEEE Software.

Prof. Dr. Peter Kokol: Reviewer for Informatica Medica Slovenica, editor in Chief.

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Peter Kokol, Visit during bilateral cooperation project., scientific Matej Mertik, collaboration, Udine, Italy, May 9–12, 2005. Gregor Štiglic: System Design Laboratory CS - 25

Prof. Dr. Peter Kokol, Visit during bilateral cooperation project., visit, Gregor Štiglic: Madeira, Portugal, Aug. 1–8, 2005.

Prof. Dr. Peter Kokol: Project preparation visit., visit, San Francisco, United States, Oct. 25–26, 2005.

Matej Mertik, Visit during bilateral cooperation project., scientific Mateja Verlič: collaboration, Prague, Czech Republic, Nov. 20–25, 2005.

Petra Povalej, Visit during bilateral cooperation project., scientific Mateja Verlič: collaboration, La Laguna, Spain, Dec. 16–23, 2005.

GUESTS AND VISITORS

Jose Sigut, Visit during bilateral project, scientific collaboration, Silvia Alayon, Sept. 16–23, 2005. Jose Luis Sanches de la Rosa (University of La Laguna, Tenerife, La Laguna, Spain):

CS - 26 System Software Laboratory

SYSTEM SOFTWARE LABORATORY

Head: Prof. Dr. Damjan Zazula Phone: +386 2 220 74 80 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

International projects

I*PROMS Innovative Production Machines and Systems (Network of Excellence in the 6th Framework Programme ) Leader: Prof. Dr. Damjan Zazula (Faculty of Electrical Engineering and Computer Science) Participants: Konrad Steblovnik, MSc (Gorenje Point, Velenje) Financed by: Faculty of Electrical Engineering and Computer Science

The System Software Laboratory is an associate partner in the I*PROMS Network of Excellence within the 6th European Framework Programme. The network is managed by the University of Cardiff, Great Britain (Manufacturing Engineering Centre), while it comprises more than 30 partners from 14 European countries. In 2004 and 2005, we were on the list for dissemination of all the obtained professional and scientific contributions, whereas in 2005 we also began our own research in the field of intelligent multiagent systems which are supposed to be introduced into the new generation of household and production devices. A development group from Gorenje Point in Velenje, Slovenia, also participates in these activities.

DePaSSE Detection of pathological changes in surface electromyograms using statistical and entropy-based approaches (Bilateral Slovenian-Cypriot project) Leader: Prof. Dr. Damjan Zazula (Faculty of Electrical Engineering and System Software Laboratory CS - 27

Computer Science) Participants: Dr. Aleš Holobar, Rok Istenič, Dr. Matjaž Divjak, Breda Jesenšek Papež, MSc (Teaching Hospital of Maribor) Project partners: University of Cyprus, Nicosia Financed by: Cyprus Research Promotion Foundaction, Slovenian Research Agency

A bilateral research project whose aim is computer-based diagnosing of surface electromyograms (SEMG) was approved for the period between October 2005 and October 2007. This project collaboration links four research groups, two from Cyprus (Department of Computer Science, University of Cyprus, and Cyprus Institute for Neurology and Genetics, both in Nicosia) and two from Slovenia (beside the System Software Laboratory, there is also a group from the Neurology Department in the Teaching Hospital of Maribor). The project aims at studying the different statistical and entropy-based methods in order to analyse one- or two-channel SEMGs and detect normal and pathological patterns. The development of computer-assisted SEMG processing will be done by the partners from the computer science field, while the medical partners are going to take part in consultations and clinical evaluation. In 2005, clear goals were defined for the project collaboration, all partner activities were planned, and the exchanges and visits of researchers were envisaged

IMuCoS Identification of central nervous system muscle control strategies by the means of multichannel surface electromyograms decomposition Leader: Prof. Dr. Roberto Merletti (Politecnico di Torino) Participants: Dr. Aleš Holobar, Prof. Dr. Damjan Zazula Financed by: Institute for Scientific Interchange Foundation, Torino, Italia

The main objective of this project is to extract information about the muscle properties and central nervous system (CNS) control strategies out of the surface electromyographic signals. This includes but is not limited to the identification of motor units activation patterns and strategies used by the CNS to control the muscle as a whole, produce smooth contractions and generate finely tuned forces necessary in everyday tasks. The project is strongly multidisciplinary as it integrates different areas of neurophysiology, blind source separation, pattern recognition and electronics. Providing a novel and non- invasive tool for basic and applied research in occupational, sport and rehabilitation medicine, ergonomics and space medicine, the project is also expected to have a high social and economic impact. Possible collateral applications already include objective assessment of the effectiveness of neuro-rehabilitation procedures and the training of athletes, prevention of work-related neuromuscular disorders, monitoring of the musculoskeletal deterioration in the microgravity environment, etc CS - 28 System Software Laboratory

CoLoS Conceptual Learning of Science (American-European project) Leader: Prof. Dr. Damjan Zazula (Faculty of Electrical Engineering and Computer Science) Participants: Jurij Munda, Dr. Matjaž Divjak, Dr. Aleš Holobar, Asst. Prof. Dr. Božidar Potočnik, Dr. Dean Korošec, Dr. Danilo Korže Financed by: Faculty of Electrical Engineering and Computer Science

This is a permanent project, aimed at developing and constructing software tools that will enhance the comprehension of basic scientific fields (such as physics, chemistry, or computer science). Special emphasize has been placed on an intuitive approach and computer-assisted learning. In 2005, the System Software Laboratory didn’t participate in the CoLoS activities with its own subprojects, but it was involved only in periodic contacts and exchange of opinions with other project partners.

Completed research projects 2005

Basic research project

J3-4482-0334- Značilnosti antralnih foliklov in zoritvena sposobnost jajčnih 02/3.05 celic v pogojih in vitro (Characteristics of antral follicles and the ability of in vitro ova maturation) Leader: Prof. Dr. Veljko Vlaisavljević (Teaching Hospital of Maribor) Participants: Prof. Dr. Damjan Zazula; Boris Cigale, MSc, Jurij Munda Project partners: Teaching Hospital of Maribor Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Duration: July 2002 to June 2005

This project continues the research work done so far on the growth of dominant follicles either in natural or in stimulated cycles. Comparative examinations were conducted by a 3D ultrasound device. Firstly, we developed a software interface which supports the processing of the obtained ultrasound recordings by our own recognition algorithms. The segmentation algorithm which detects ovarian follicles in 3D ultrasound volumes is based on continuous wavelet transform. We also developed a registration algorithm which provides computer- based tracking of a single follicle’s growth, though a few days of the maturation period.

System Software Laboratory CS - 29

Slice from a 3D ultrasound The position of follicles Visualization of the detected volume. detected by our algorithm in a and registered follicles from 3D ultrasound volume. two successive examinations.

PUBLICATIONS

Igor But, Metka Faganelj But, Andrej Šoštarič, “Functional magnetic stimulation for mixed urinary incontinence,” J Urol, Vol. 173, No. 5, pp. 1644-1646, 2005.

Matjaž Divjak, Damjan Zazula, “Detection of human faces and hands using colour and range data,” Electrotechnical Review, Vol. 72, No. 2-3, pp. 85-90, 2005.

Pedro Rangel Henriques, Maria Joao Varando Pereira, Marjan Mernik, Mitja Lenič, Jeffrey G. Gray, Hui Wu, “Automatic generation of language-based tools using the LISA system,” IEE proc., Softw. (Print), Vol. 152, No. 2, pp. 54-69, Apr. 2005.

Dušan Heric, Damjan Zazula, “Reconstruction of object contours using directional wavelet transform,” WSEAS Trans. Comput., Vol. 4, Iss. 10, pp. 1305-1312, Oct. 2005.

Dean Korošec, Aleš Holobar, Matjaž Divjak, Damjan Zazula, “Building interactive virtual environments for simulated training in medicine using VMRL and Java/JavaScript,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S61-S70, 2005.

Danilo Korže, Aleksander Vesel, “L(2,1)-labeling of strong products of cycles,” Inf. process. lett., Vol. 94, Iss. 4, pp. 183-190, 2005.

Božidar Potočnik, Dušan Heric, Damjan Zazula, Boris Cigale, Daniel Bernard, Tomaž Tomažič, “Construction of patient specific virtual models of medical phenomena,” Informatica (Ljublj.), Vol. 29, No. 2, pp. 209-218, Jun. 2005. CS - 30 System Software Laboratory

Petra Povalej, Mitja Lenič, Milan Zorman, Peter Kokol, Dejan Dinevski, “Accuracy of intelligent medical systems,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S95-S105, 2005.

Damjan Zazula, Aleš Holobar, “An approach to surface EMG decomposition based on higher- order cumulants,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S51-S60, 2005.

Konrad Steblovnik, Jurij F. Tasič, Damjan Zazula, “Intelligent home assistant: theory of rational agent application for intelligent home appliance implementation,” Inf. MIDEM, Vol. 35, No. 4, pp. 240-252, Dec. 2005.

Boris Cigale, Matjaž Divjak, Damjan Zazula, “Sistem za razpoznavo registrskih tablic (SORT) - projektno vodena predavanja in vaje na smeri logika in sistemi,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 348-351.

Matjaž Divjak, Damjan Zazula, “Stereo tracking error analysis by comparison with an electromagnetic tracking device,” Image analysis: 14th Scandinavian conference, SCIA 2005, Joensuu, Finland, Jun. 2005, pp. 619-628.

Dušan Heric, Božidar Potočnik, “A generic simulation environment for knee joint kinematics simulations,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 449-452.

Dušan Heric, Damjan Zazula, “Adaptive edge detection with directional wavelet transform,” Proceedings of the WSEAS International conferences, Corfu Islands, Greece, 5th Int. Conf. on Simulation, modeling and optimization (SMO '05), 5th Int. Conf. on Signal, speech and image processing (SSIP '05), 5th Int. Con. on Multimedia, internet & video technologies (MIV '05), 1st WSEAS Intern. Symposium on Grid computing, 1st WSEAS Intern. symposium on Digital libraries, 1st WSEAS Intern. Symposium on Data mining, aug. 2005.

Dušan Heric, Damjan Zazula, “Modulus maximum image energy using maximum entropy,” 47th International symposium ELMAR-2005 focused on multimedia systems and applications, Zadar, Croatia, Jun. 2005, pp. 57-60.

Dušan Heric, Damjan Zazula, “Povezovanje robnih točk v konturno linijo s poravnavo 1D signalov,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 29-32.

Dušan Heric, Damjan Zazula, “Scale adaptive edge detection using maximum entropy,” IWSSIP 2005: proceedings of the 12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, Sep. 2005, pp. 463-466. System Software Laboratory CS - 31

Aleš Holobar, Damjan Zazula, “Kompenzacija nedoločenosti akcijskih potencialov mišičnih vlaken pri površinskih elektromiogramih,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 304-307.

Aleš Holobar, Damjan Zazula, “Napredne tehnike za dekompozicijo večkanalnih površinskih elektromiogramov,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 296-299.

Mitja Lenič, Peter Kokol, Milan Zorman, Petra Povalej, Bruno Stiglic, Ryuichi Yamamoto, “Improved knowledge mining with the multimethod approach,” Foundations of data mining and knowledge discovery (Studies in computational intelligence, vol. 6), pp. 305-318.

Jurij Munda, Mitja Lenič, “Zaznavanje plagiatov v programskem inženirstvu,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 356-359.

Božidar Potočnik, “Projekt SimBio,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 308-311.

Božidar Potočnik, Mitja Lenič, Damjan Zazula, “Inteligentna spletna storitev za segmentiranje digitalnih,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 193-196.

Petra Povalej, Mitja Lenič, Peter Kokol, “Improving ensembles with classificational cellular automata,” Intelligent data engineering and automated learning - IDEAL 2005: 6th international conference, Brisbane, Australia, Jul. 2005, pp. 242-249.

Damijan Rebernak, Milan Zorman, Mitja Lenič, “Določanje mejne odločitvene poti z uporabo metode podpornih vektorjev,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 146-149.

Smiljan Šinjur, “Algoritem tvorbe vgnezdenih izbočenih lupin,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 37-40.

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Rapid control prototyping for remote controlled robot arm,” Proceedings, 14th International Workshop on Robotics in Alpe-Adria-Danube Region, Bucharest, Romania, May 2005, pp. 451-456.

Mitja Truntič, Smiljan Šinjur, Riko Šafarič, “Remote rapid robot arm control prototyping,” ISIE 2005, International Symposium on Industrial Electronics 2005, Dubrovnik, Croatia, Jun. 2005, pp. 1697-1702. CS - 32 System Software Laboratory

Mateja Verlič, Mitja Lenič, Peter Kokol, “Education and information e-health portal,” EMBEC'05: proceedings(IFMBE Proceedings, Vol. 11), European Medical and Biological Engineering Conference, Praga, Czech Republic, Nov. 2005.

Ana Vovk Korže, Danilo Korže, “Geography and Bologna process,” South eastern European countries on their way to Europe - geographical aspects: proceedings, Dubrovnik, Croatia, Sep. 2004.

Damjan Zazula, Gregor Krebs, “Speech recognition of a limited vocabulary using the convolution kernel compensation approach,” Proceedings of the 4th WSEAS International conference on electronics, signal processing and control, Rio de Janeiro, Brasil, Apr. 2005, pp. 38-43.

Jurij Rakun, Damjan Zazula, “Računalniško odkrivanje tiskarskih napak,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 381-382.

Ana Vovk Korže, Branka Čagran, Marta Otič, Danilo Korže, “Magični trikotnik v partnerstvu: fakulteta - mentor - študent,” Razvijanje sodelovalnega modela v izobraževanju učiteljev in vzgojiteljev: partnerstvo fakultet in šol v letih 2004 in 2005: znanstveni in strokovni posvet z mednarodno udeležbo, Univerza na Primorskem, Pedagoška fakulteta Koper, Slovenia, Sep. 2005, pp. 24-25.

Ana Vovk Korže, Danilo Korže, “Partnerstvo fakultet in šol kot spodbuda profesionalnemu razvoju učiteljev na šolah in fakultetnih učiteljev,” Konferenca z mednarodno udeležbo "Partnerstvo in mentorstvo v izobraževanju učiteljev", Višja šola za gostinstvo in turizem, Bled, Slovenia, Sep. 2005, pp. 50.

Ana Vovk Korže, Danilo Korže, “Regional development and environmental quality,” Knjiga sažetaka i vodič terenskog izlaska, Tuzla, BIH, 2005, pp. 25.

Ana Isabel Cardoso, Peter Kokol, Mitja Lenič, Rui Gustavo Crespo, “Comlexity-Based evaluation of the evolution of XML and UML systems,” Advances in UML and XML-based software evolution, pp. 308-321.

Damjan Zazula, Operacijski sistemi, Maribor: Faculty of Electrical Engineering and Computer Science, Laboratorij za sistemsko programsko opremo, Slovenia, 2005. System Software Laboratory CS - 33

PRESENTATIONS BY THE LABORATORY MEMBERS

Mitja Lenič: “Software design and implementation”, lectures given at Madeira University, Portugal, in the frame of the Socrates/Erasmus teaching staff mobility program, Funchal, Madeira, Portugal, from Sept. 24, 2004 to Jan. 28, 2005.

Matjaž Divjak: “Introduction to Java,” winter course on computer science and informatics, Maribor, Slovenia, Feb. 21, 2005.

Damjan Zazula, Aleš Holobar: “Information extraction from surface EMG: extraction of individual motor unit parameters,” international Summer School on Non-Invasive Electromyography, Moncalieri, Italy, June 24, 2005.

Damjan Zazula, Aleš Holobar: “Decomposition of surface electromyograms,” politecnico di Torino, Torino, Italy, July 14, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Damjan Zazula: Reviewer, international workshop, 12th International Workshop on Systems, Sygnals and Image Processing, Chalkida, Greece, Sept. 22–24, 2005.

Prof. Dr. Damjan Zazula, Reviewers for EURASIP Signal Processing. Dr. Aleš Holobar:

Prof. Dr. Damjan Zazula, Reviewers for IEEE Transactions on Biomedical Dr. Aleš Holobar: Engineering.

Prof. Dr. Damjan Zazula: Reviewer for Medical and Biological Engineering and Computing.

Prof. Dr. Damjan Zazula, Reviewers for Circuits, Systems, and Signal Dr. Aleš Holobar: Processing.

Dr. Aleš Holobar: Reviewer for encyclopedia Wiley Encyclopedia of Biomedical Engineering.

Prof. Dr. Damjan Zazula: Reviewer for Digital Signal Processing.

Dušan Heric: Reviewer for Image and Vision Computing. CS - 34 System Software Laboratory

Dr. Aleš Holobar: Reviewer for Journal of Electromyography and Kinesiology.

Dr. Aleš Holobar: Reviewer for Journal of Neurophysiology.

Asst. Prof. Dr. Božidar Potočnik: Reviewer for Informacije MIDEM.

Prof. Dr. Damjan Zazula: Reviewer for IEEE Transactions on Neural Systems and Rehabilitation Engineering.

VISITS TO OTHER INSTITUTIONS

Dr. Mitja Lenič: In the scope of the Socrates-Erasmus staff mobility project, a course entitled "Software Design and Implementation" has been given for undergraduate students, formal call, Madeira, Portugal, Sept. 20, 2004 to Jan. 31, 2005.

Dr. Aleš Holobar: Research visit to Politecnico di Torino, visit, Turin, Italy, Feb. 1 to July 31, 2005.

Prof. Dr. Damjan Zazula: Visit to Federal University of Rio de Janiero and talks about a collaboration with Prof. Dr. Antonio F. C. Infantosi and Prof. Dr. João C. Machando from the Biomedical Engineering Department, visit, Rio de Janiero, Brazil, Apr. 28, 2005.

Dr. Aleš Holobar: Postdoctoral study at Politecnico di Torino, postdoctoral work, Torino, Italy, Nov. 1 to Dec. 31, 2005.

Dr. Mitja Lenič: A course “Software Design and Implementation” has been given to undergraduate students of Computer Science. A course was a part of Socrates-Erasmus staff mobility project, formal call, Madeira, Portugal, Nov. 21, 2005 to Jan. 27, 2006. System Software Laboratory CS - 35

GUESTS AND VISITORS

Frédéric Jarraud Undergraduate research work on real-time tracking (Ecole Centrale de Nantes, Nantes, of face and hands using stereo camera, research France): work, Apr. 18 to Aug. 19, 2005.

Julien Delair Undegraduate research work on the field of iterative (Ecole Centrale de Nantes, Nantes, C implementation of the convolution kernel France): compensation algorithm, research work, Apr. 18 to Aug. 20, 2005.

Arnaud Billant Undergraduate research work on upgrading a (Ecole Centrale de Nantes, Nantes, surface EMG measurements device, research France): work, Apr. 20 to Aug. 20, 2005.

DECORATIONS, AWARDS, AND HONOURS

Jurij Rakun: under guidance of mentor prof. Zazula has won first prize on competition of student articles with title “Computer detection of printing errors” and placed to further qualifications for competition of student articles IEEE region 8, Portorož, Slovenia, Sept. 27, 2005.

Rok Istenič: the rector award for the best student in his generation, Maribor, Slovenia, Nov. 16, 2005.

Prof. Dr. Damjan Zazula: the Faculty Award for exceptional achievements in scientific research and for conducting this field at FERI for several years. Honoured at the celebration of the Faculty of Electrical Engineering and Computer Science Day, Maribor, Slovenia, Dec. 8, 2005.

CS - 36 Heterogeneous Computer Systems Laboratory

HETEROGENEOUS COMPUTER SYSTEMS LABORATORY

Head: Assoc. Prof. Dr. Milan Ojsteršek Phone: +386 2 220 74 51 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

CHP Spletni portal CHP (CHP Web Portal) Leader: Assoc. Prof. Dr. Milan Ojsteršek (Faculty of Electrical Engineering and Computer Science) Participants: Bojan Letnik; Branko Horvat, MSc; Ervin Schaffranietz, MSc; Janez Brezovnik; Albin Bregant; Borut Gorenjak Financed by: Avditorij Portorož, Faculty for Civil Engineering, University of Maribor, Municipality of Piran, Municipality of Postojna, Municipality of Muta, Municipality of Zreče, University of Maribor, Faculty of Business and Economics Maribor, Faculty of Mechanical Engineering, Municipality of Kidričevo, Municipality of Selnica, Municipality of Oplotnica, Municipality of Moravske Toplice, Municipality of Pivka, Municipality of Videm pri Ptuju, Municipality of Slovenska Bistrica, Municipality of Sveti Jurij, Municipality of Kungota, Municipality of Kranj, Municipality of Maribor, Municipality of Sežana, Municipality of Radovljica, Municipality of Koper, Faculty of Electrical Engineering and Computer Science, Lokalna turistična organizacija Kokra

Portal infrastructure facilitates the creating, integrating, and managing of information documents. In this way, we can achieve higher efficiency of access to such information since Heterogeneous Computer Systems Laboratory CS - 37

users spend less time to find, use, and analyze information. In addition, administrators spend less time helping users. The basic features of portals are: documents management, information search, integration of application services and content within an information system with external information systems, cross-referencing of content and services, providing collaboration services, information categorization, providing independence between data and its presentation in various media, multi-lingua information presentations, authentication and authorization of access to data and services and security consideration, and personalization and customization. Portal is being updated using new functionality, on a regular basis.

EKOFARM3 Centraliziran sistem za kontrolo ekološkega kmetovanja (Centralized system for ecofarming controls) Leader: Assoc. Prof. Dr. Milan Ojsteršek (Faculty of Electrical Engineering and Computer Science) Participants: Ervin Schaffranietz, MSc Financed by: Ministry of Agriculture, Forestry and Food

Farmers, who want to trade their crops, products or meat as ecological products, have to breed, grow or produce them in a way that meets strict ecological criteria. Within this project, the system of the previous project has been upgraded to enable support for more controlling organizations. They operate via a central server at the Ministry of Agriculture providing central control.

Research and development projects

DKMORS Izdelava digitalne knjižnice Ministrstva za obrambo Republike Slovenije (Developing the Digital Library of the Ministry of Defence of the Republic of Slovenia) Leader: Asst. Prof. Dr. Dejan Dinevski (University of Maribor) Participants: Prof. Dr. Peter Kokol; Metka Zorič-Venuti; Andrej Brodnik; Branko Horvat, MSc; Janez Brezovnik; Zvezdana Strmšek; Asst. Prof. Dr. Milan Ojsteršek Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of Defence

The main purpose of the project is developing and employing information technology for establishing a special military digital library based on intra- and Internet environments. The principal tasks are research into the feasibility of establishing a digital library as an upgrade of CS - 38 Heterogeneous Computer Systems Laboratory

the classical library and research into the best computer hardware, software and communication solution for accessing the library-information sources of the library-information system of the Ministry of Defence for the users/employees of the ministry. The project aims for developing a computer-aided model of the digital library with an upgrade ability and the suggestion of digital library implementation. The phases of preperation, analysis and design have been completed. The current work has been mainly modelling and research.

International projects

ELISA E-Learning for Improving access to Information Society for SMEs in SEE Area Leader: Asst. Prof. Dr. Dejan Dinevski (University of Maribor) Participants: Janez Brezovnik; Albin Bregant; Borut Gorenjak; Ervin Schaffranietz, MSc; Branko Horvat, MSc; Assoc. Prof. Dr. Milan Ojsteršek Project partners: Greek Research & Technology Network, University of Maribor, Freie Universität Berlin, DANUBE - European Training, Technology & Innovation, Systema Technologies SA Financed by: European Union, The Republic of Slovenia

E-Learning for Improving access to the Information Society for SMEs in SEE Area based on tight collaboration of academia and industry at the transnational level.

Completed research projects 2005

Applied project

MVIVŠ Model vseživljenskega izobraževanja za visoko šolstvo v Sloveniji (Life-long Education Model of Slovenian Colleage and Faculty Shcools) Leader: Asst. Prof. Dr. Dejan Dinevski (University of Maribor) Participants: Metka Zorič-Venuti, MSc; Herbert Tschamler; Sofija Vrcelj; Nada Babić; Mario Plenkovič; Prof. Dr. Peter Kokol; Albin Bregant; Assoc. Prof. Dr. Milan Ojsteršek; Andrejka Golob; Manica Učnik Krump; Janja Črčinovič Rozman; Ivan Gerlič; Majda Pšunder; Zvezdana Strmšek Heterogeneous Computer Systems Laboratory CS - 39

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

Duration: Oct. 2003 to Sept. 2005

The main goal of the project is making a proposal for a systematic and transparent model of life-long education, enabling informal university education with e-education concept support. The project will support the implementation of "Bolognese" declaration from 1999, that favours the validity of credit scores (ECTS credit system) obtained outside formal university education. The model will ensure the flexible offer of educational contents that will be provided by university lecturers and partner institutions co-workers. The model will be under the same supervision as that of the formal study programmes. It will represent the basis for future activities on collaboration on university education systems, with industry and other commercial and non-commercial activities. The important contribution of this project will be the basic scheme of the life-long university education as an e-education. We will use our own programme environment for e-education - PUND we are developing at the University of Maribor. We will upgrade the PUND with functionalities that will support the specific of life-long education. The project is featured by its interdisciplinarity as it will consist of active professionals of pedagogical sciences, special didactics of computer-based education, economic sciences and computer sciences.

International project

SACELS Slovenian Austrian Cooperative E-Learning Space Leader: Asst. Prof. Dr. Dejan Dinevski (University of Maribor) Project partners: University of Maribor, Faculty of Electrical Engineering and Computer Science, University of Graz, Graz University of Technology, University of Klagenfurt, University of Triest, Doba, Human Resource Management Fund Financed by: European Union

Duration: Apr. 2004 to Apr. 2005

The aim of the project is to build up the Slovenian-Austrian Cooperative E-Learning Space for lifelong learning activities. The target groups are institutions offering lifelong learning, vocational training and courses, also higher education etc., learners and employed people especially in SMEs and also the students of the border regions. In the scope of the project the complete multilingual technological platform will be developed and implemented at the partner institutions. The developed software and hardware resources will be available for all CS - 40 Heterogeneous Computer Systems Laboratory

educational/training institutions that educate and train SMEs employees. Two educational programmes: Strategic planning and Human resources development will be fully developed and conducted in the e-learning means with the learners from SMEs.

PUBLICATIONS

Janez Brezovnik, Milan Ojsteršek, “Izdelava sistema za upravljanje z digitalnimi identitetami,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 189-192.

Borut Gorenjak, Milan Ojsteršek, “Model za gradnjo uporabniških vmesnikov in integracijo spletnih storitev,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. A, pp. 197-200.

GUESTS AND VISITORS

Chris Coughlan Introductory visit about 7th Framework Programme, (Hewlett-Packard Galway Limited, scientific collaboration, Oct. 21, 2005. Galway, Ireland):

Geometric Modelling and Multimedia Algorithms Laboratory CS - 41

GEOMETRIC MODELLING AND MULTIMEDIA ALGORITHMS LABORATORY

Head: Prof. Dr. Borut Žalik Phone: +386 2 220 74 71 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

ZEIA01 Modeliranje 3D terena za programski paket GEOS (3D Terrain Modelling for GEOS program package) Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Boštjan Pivec Project partners: ZEIA d.o.o Financed by: ZEIA d.o.o

The goal of the project is to build a module for GEOS program package which has been developed by ZEIA company. With this module it will be possible to realistically visualize 3D terrain according to input triangular mesh. Module will also have support for different lighting effects and colorisation for triangles, camera walks over terrain, rotation of 3D view, loading and mapping DOF (digital ortophoto aeroimages) in various file formats (TIFF, BMP, JPEG).

HPlus-GIS Namenska programska oprema za podporo urejevalniku mnogokotnikov v okolju GIS (Special purpose software library for support of the GIS polygon editor) Leader: Dr. Gregor Klajnšek (Faculty of Electrical Engineering and Computer Science) CS - 42 Geometric Modelling and Multimedia Algorithms Laboratory

Participants: Prof. Dr. Borut Žalik, Mirko Zadravec Project partners: S&T Hermes Plus Financed by: S&T Hermes Plus

The aim of the project is the development of a software library for management of the topological systems of polygons. The library will offer functionality for the execution of simple topological operations (ie. insertion of points, insertion of polygons) as well for execution of advanced operation, such as ensuring the topological consistency of polygons, determination of intersections between polygons and performing Boolean operations on polygons. The software library will be implemented in Java.

HPlus-GERK Programska oprema za operacije nad območji GERK (Special purpose software library for performing topological operations on GERK areas) Leader: Asst. Prof. Dr. David Podgorelec (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Gregor Klajnšek, Prof. Dr. Borut Žalik, Mirko Zadravec Project partners: S&T Hermes Plus Financed by: S&T Hermes Plus

The goal of the project is to extend the software library, created inside a related project, with additional functionality required for performing topological operations on GERK areas. The library will represent a core of the software solution for application of subsidies in agriculture. Company S&T Hermes Plus d.d. is developing this software solution for the Agency of the Republic of Slovenia for Agricultural Markets and Rural Development (AAMRD). The additional functionality will incorporate limiting the polygons input inside the boundaries of GERK, computing the intersections between the input polygons and those polygons, representing the OMD areas, and automatic void filling inside the GERK area by the software-created polygons.

Research and development projects

J1-7218 Algoritmi za analizo dodeljevanja lokacij (Algorithms for analysing facility location) Leader: Justo Sergio Cabello (Institute for Mathematics, Physics and Mechanics, University of Ljubljana) Participants: Prof. Dr. Borut Žalik, Asst. Prof. Dr. Krista Rizman Žalik Project partners: Institute for Mathematics, Physics and Mechanics, University of Ljubljana Geometric Modelling and Multimedia Algorithms Laboratory CS - 43

Financed by: Slovenian Research Agency

In this project, we consider problems arising in facility location analysis and we will provide efficient algorithmical solutions for them. Whenever facilities have to be placed or removed, we can search for a model to quantitatively measure the impact of the decision, and the best decision translates into an optimization problem. The functions to optimize may be simple ones, but in most real applications we have to deal with a trade-off between different criteria. When we aim for efficient algorithms to solve these different problems, the algorithms need be tailored to each particular problem, and different problems call for drastically different algorithmical solutions. The techniques to be used in our project will be mainly drawn from the fields of computational geometry, graph algorithms and data structures. The interaction between these fields and location analysis has proven, and keeps being, successful.

International projects

BI-CN/06-07/03 Research on the algorithms of Computer Graphics and Computational Geometry Leader: Yong Kui Liu (Dalian Nationalities University, College of Computer Science and Engineering), Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Gregor Klajnšek, Asst. Prof. Dr. David Podgorelec, Asst. Prof. Dr. Sebastian Krivograd, Asst. Prof. Dr. Krista Rizman Žalik, Vid Domiter, Dr. Matej Gomboši, Mirko Zadravec Project partners: Dalian Nationalities University, College of Computer Science and Engineering Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije, Government of Peoples Republic of China

An informal cooperation between both research groups in the research areas of algorithms of computer graphics and computational geometry was established as early as 2002. Before the common project started, this cooperation had already resulted in two original scientific papers. Through the project, we wish to strengthen our cooperation, focusing on the development of new methods, which are numerically stable and computationally efficient. We have identified three research topics as the basis for further cooperation: general voxel traversing algorithm; algorithms for polygon clipping and set operations between regions; approximation and compression of 3D free-formed surface models. CS - 44 Geometric Modelling and Multimedia Algorithms Laboratory

BI-CZ/05-06-005 Bilateral cooperation in computational geometry research for visualization Leader: Ivana Kolingerova (University of West Bohemia), Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Sebastian Krivograd, Dr. Matej Gomboši, Dr. Gregor Klajnšek, Mirko Zadravec, Vid Domiter, Asst. Prof. Dr. David Podgorelec Project partners: University of West Bohemia Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije, Government of the Czech Republic

Algorithms of applied computational geometry (triangulation, surface reconstruction, data compression, etc.) remain the common research area with dr. Ivana Kolingerova’s working team from the University of West Bohemia in Pilsen. The Main goals of the project are presenting our current work, finding new common solutions to geometric problems and preparation of common proposals for international projects.

COST A27 Understanding pre-industrial structures in rural and mining landscapes Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. David Podgorelec, Asst. Prof. Dr. Sebastian Krivograd, Dr. Matej Gomboši, Dr. Gregor Klajnšek, Vid Domiter, Boštjan Pivec, Denis Špelič, Mirko Zadravec Project partners: European Union Financed by: European Union, Slovenian Research Agency

The COST A27 action incorporates three working groups: WG1: Mining Landscapes, WG2: Rural Landscapes: Landscape Markers and the Organisation of the Land, and WG3: Virtual Landscapes and Databases. The Laboratory for Geometric Modelling and Multimedia Algorithms joined the third working group in 2005. The main goal of this group is the development of geographic information systems (GIS) for storing, visualisation and analysis of spatial data. Prof. Žalik has become a co-ordinator for the A27 action for Slovenia, which has not participated to the COST action before. The laboratory members are, with all their experience in developing algorithms of computational geometry, in related special-purpose GIS, surface and in 3D visualization on web, supposed to significantly participate towards the final success of the project. Geometric Modelling and Multimedia Algorithms Laboratory CS - 45

BI-GR/01/05 Web GIS application in the East Aegean area and algorithms of computational geometry Leader: Andreas Vassilopoulos (Geocultural Park Of East Aegean “PYTHAGORAS”), Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Sebastian Krivograd, Asst. Prof. Dr. David Podgorelec, Dr. Matej Gomboši, Dr. Gregor Klajnšek, Mirko Zadravec, Vid Domiter Project partners: Geocultural Park Of East Aegean “PYTHAGORAS” Financed by: Slovenian Research Agency, Vlada Helenske republike, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

The main project goals are the development of a Web GIS application and, simultaneously, studying the applicability of computational geometric algorithms in the specific GIS. For the Greek part, the stimulus for this multidisciplinary project was the need to design a Web GIS for areas with wide geographic distribution such as the islands of the Eastern Aegean that meet serious problems with specific environmental factors; for instance often fire or sudden rainfall that result in floods every year in this region. Hence, a flexible and dynamic tool that enables continuous update of the environmental conditions in the area is of great necessity for the local authorities and for the academic community as well. On the other hand, the Slovenian team is also vigorously interested in the development of the Web GIS from another perspective. Designing geometrical algorithms and examining their functionality in specific software is remarkably intriguing. The attempt to identify missing algorithms’ functionalities, possibly met on an actual application, promotes knowledge and improves the algorithms’ effectiveness.

Completed research projects 2005

Research and development project

V2-0126 Analiza standardov, priprava strateških usmeritev in izdelava prototipnega porazdeljenega informacijskega sistema (Standard analysis, preparation of strategic directions and prototype development of distributed information system) Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science) Participants: Denis Špelič, Dr. Matej Gomboši, Asst. Prof. Dr. Krista Rizman Žalik CS - 46 Geometric Modelling and Multimedia Algorithms Laboratory

Project partners: IGEA d.o.o Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

Duration: Sept. 2004 to Aug. 2005

The goal of this project is to prepare technical basics for implementation of distributed GIS systems. The starting points and guidelines for the development of distributed GIS systems will be given on the basis of well-known standards and recommendations (Open GIS Consortium, GML, XML...). Technical specification about transferring different types of data and about WEB Services will follow. A protocol for the inclusion of new spatial data providers into the uniform net for mediating spatial data will also be defined. The practical result of the work will be a prototype of a distributed GIS system. Such methodology can be the basis for similar systems that process a lot of spatial data.

International project

BI-FI/04-05-005 Practical and theoretical aspects of computational geometry algorithms Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science), Merja Wanne (University of Vaasa) Participants: Mirko Zadravec, Dr. Gregor Klajnšek, Asst. Prof. Dr. Sebastian Krivograd, Dr. Matej Gomboši, Vid Domiter Project partners: University of Vaasa Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije, Finnish Government

Duration: Jan. 2004 to Dec. 2005

The common research area of both partners is Adjacency Relation Systems and solving closest point problems. The Finnish partner, which has rich experiences in mathematical analysis of algorithms, did important theoretical research, while the Slovene group came up with some practical solutions, based on intuition. Our common aim was to link both theoretical and practical experience to construct better, faster and more reliable solutions. The result of our common research is an original algorithm for solving nearest-point problems in 2D, which is almost independent of input points distribution. The developed method was presented in a common conference paper. Both research groups also spent some time on researching and analysing algorithms for the compression of triangle meshes, using algorithms of Delaunay triangulations and searching for the nearest-points by simulating "ad-hoc" networks. Geometric Modelling and Multimedia Algorithms Laboratory CS - 47

PUBLICATIONS

Matej Gomboši, Borut Žalik, “Point-in-polygon tests for geometric buffers,” Comput. geosci., Vol. 31, pp. 1201-1212, 2005.

Gregor Klajnšek, Borut Žalik, “Merging polygons with uncertain boundaries,” Comput. geosci., Vol. 31, pp. 353-359, 2005.

Gregor Klajnšek, Borut Žalik, “Progressive lossless compression of volumetric data using small memory load,” Comput. med. imaging graph., Vol. 29, Iss. 4, pp. 305-312, Jun. 2005.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method for engineering data represented by triangular meshes,” WSEAS Trans. Math., Vol. 4, Iss. 3, pp. 266-272, July 2005.

Yong Kui Liu, Borut Žalik, “An efficient chain code with Huffman coding,” Pattern recogn., Vol. 38, Iss. 4, pp. 553-557, 2005.

David Podgorelec, Gregor Klajnšek, “Acceleration of sweep-line technique by employing smart quicksort,” Inf. sci., Vol. 169, Iss. 3/4, pp. 383-405, Feb. 2005.

Krista Rizman Žalik, “Learning through data mining,” Comput. appl. eng. educ., Vol. 13, No. 1, pp. 60-65, May 2005.

Mirko Zadravec, Borut Žalik, “An almost distribution-independent incremental Delaunay triangulation algorithm,” Vis. comput., Vol. 21, No. 6, pp. 384-396, Jul. 2005.

Borut Žalik, “An efficient sweep-line Delaunay triangulation algorithm,” Comput. Aided Des., Vol. 37, No. 10, pp. 1027-1038, 2005.

Matej Gomboši, “Containment problem with geometric buffers,” Contrib. geom. model. multimed., Vol. 5, No. 3, pp. 1-19, 2005.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A new method for compression of triangular engineering data,” Contrib. geom. model. multimed., Vol. 5, No. 2, pp. 1-20, 2005.

Boštjan Pivec, “A general algorithm for triangular meshes simplification,” Contrib. geom. model. multimed., Vol. 5, No. 4, pp. 1-14, 2005.

Mirko Zadravec, Borut Žalik, “An incremental Delaunay triangulation algorithm using hash table and skip lists,” Contrib. geom. model. multimed., Vol. 5, No. 1, pp. 1-34, 2005. CS - 48 Geometric Modelling and Multimedia Algorithms Laboratory

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “An efficient compression method for triangular meshes used in engineering,” Proceedings of the WSEAS International Conferences: 7th WSEAS Int. Conf. on Mathematical Methods and Computational Techniques in Electrical Engineering (MMACTEE'05), 4th WSEAS Int. Conf. on Non-linear Analysis, Non- linear Systems and Chaos (NOLASC'05), 5th WSEAS Int. Conf. on Wavelet Analysis and Multirate Systems (WAMUS'05), Sofija, Bolgaria, Oct. 2005.

Markus Mannila, Mirko Zadravec, Merja Wanne, Borut Žalik, “An optimal heuristic for strip- based 2D dynamic nearest point problem,” Proceedings of the algorithmmic information theory conference, University of Vaasa, Vaasa, Finland, May 2005, pp. 107-116.

Matej Gomboši, “Algoritmi vsebnosti pri geometrijskih očrtjih,” 3. znanstvena konferenca PAZU "Razvojne strategije Pomurja", Hotel Diana, Murska Sobota, Slovenia, Dec. 2005, pp. 27-33.

PRESENTATIONS BY THE LABORATORY MEMBERS

Vid Domiter: “A prototype of sweep-line constrained Delaunay triangulation algorithm”, presentation at the Department of computer science and engineering, University of West Bohemia in Plzeň, Czech Republic, Oct. 10, 2005.

Sebastian Krivograd: “Compression of Triangular FEM Data”, presentation at the Department of computer science and engineering, Plzen, Czech Republic, Apr. 21, 2005.

Sebastian Krivograd: “Compression of Triangular Meshes”, presentation at the department of Computer science at University of Vaasa, Vaasa, Finland, Aug. 17, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Borut Žalik: Reviewer, international workshop, Spring conference on computer graphics SCCG 2005 in cooperation with ACM SIGGRAPH and Eurographics, Budmerice, Slovakia, May 12–14, 2005.

Prof. Dr. Borut Žalik Reviewers for Computer Aided Design. Asst. Prof. Dr. David Podgorelec:

Prof. Dr. Borut Žalik: Reviewer for Computers & geosciences.

Prof. Dr. Borut Žalik: Reviewer for IEEE transactions on visualization and Geometric Modelling and Multimedia Algorithms Laboratory CS - 49

computer graphics.

Dr. Gregor Klajnšek: Reviewer for International Journal of Geographical Information Science.

VISITS TO OTHER INSTITUTIONS

Asst. Prof. Dr. David Podgorelec: Research work on the European project Multisense from the field of medical visualisation., research work, Luton, United Kingdom, Sept. 1 to Mar. 31, 2005.

Asst. Prof. Dr. Sebastian Krivograd: Visit within project " Practical and theoretical aspects of computational geometry algorithms", scientific collaboration, Vaasa, Finland, Aug. 8–29, 2005.

Mirko Zadravec: Work on Ph.D. Thesis., postgraduate research work, Vaasa, Finland, Sept. 1 to Oct. 31, 2005.

Prof. Dr. Borut Žalik: Visit within project "Practical and theoretical aspects of computational geometry algorithms", scientific collaboration, Vaasa, Finland, Oct. 5–12, 2005.

Vid Domiter: Bilateral cooperation in computational geometry research for visualization, scientific collaboration, Plzen, Czech Republic, Oct. 17–24, 2005.

Dr. Gregor Klajnšek: Discussion with hungarian researchers about future cooperation., scientific collaboration, Budapest, Hungary, Oct. 30 to Nov. 7, 2005.

GUESTS AND VISITORS

Petr Vaneček, Visit in the frame of project "Bilateral cooperation in Mikhal Varnuška computational geometry research for visualization", (University of West Bohemia, Plzen, scientific collaboration, May 23–27, 2005. Czech Republic):

Merja Wanne, Visit in the frame of project "Practical and CS - 50 Geometric Modelling and Multimedia Algorithms Laboratory

Markus Juhani Mannila theoretical aspects of computational geometry (University of Vaasa, Vaasa, Finland): algorithms", visit, June 27 to July 10, 2005.

Jindra Parus, Visit in a frame of project "Bilateral cooperation in Josef Kohout, computational geometry research for visualization", Ivana Kolingerova scientific collaboration, Nov. 20–25, 2005. (University of West Bohemia, Plzen, Czech Republic):

László Szirmay-Kalos Member of the Ph.D. defense committee of the (Technical University of Budapest, Ph.D. thesis of Gregor Klajnšek, formal call, Dec. Budapest, Hungary): 14–15, 2005.

Institute of Informatics IN - 1

INSTITUTE OF INFORMATICS

Head: Prof. Dr. Ivan Rozman Phone: +386 2 235 51 00 E-mail: [email protected] URL: http://www.in.feri.uni-mb.si/

Contemporary society is highly dependant on information communication technologies and their applications. The efficiency of using them is related to the successful usage and fusion of technical/technological and business/organizational knowledge and skills. Studies of Informatics, therefore, in addition to some foundation knowledge that is common to computing (such as computer networks, algorithms, operation systems, programming, and databases) offers in-depth knowledge relating to the analysis, design, and implementation of information systems, strategic planning of informatics, and organization. The acquired knowledge enables successful project management and usage of modern methodologies for the development and reengineering of information systems. The main mission of informatics is to assure (better) business decision making, which is a consequence of modelling, modernizing, and improving the efficiency of business processes. To achieve this it is reasonable to rest on the existing comprehensions, reference models, and applications of methods and technologies for knowledge management. Recognition of the importance of systematic approaches, usage of standards and establishment of quality assurance systems is reflected in better information systems and business solutions. The significance of information security and protection originates from the characteristics of contemporary operations – openness and interoperability. In addition to technology-related aspects of integration informatics need to be capable of managing the gap between information technologies and different groups of users. The connection role of informatics requires them to be familiar with knowledge and skills related to communication methods and team work and IN - 2 Institute of Informatics nevertheless they should be aware of even growing impact of the advanced technological solutions to societal processes.

Institute of Informatics Head: Prof. Dr. Ivan Rozman

Information Database System Technologies Laboratory Laboratory Head: Head: Prof. Dr. Ivan Rozman Prof. Dr. Tatjana Welzer Družovec

Computer Mediated Real-Time Communication Systems Laboratory Laboratory Head: Head: Prof. Dr. József Györkös Prof. Dr. Matjaž Colnarič

Information Systems Laboratory

Head: Prof. Dr. Ivan Rozman

Employees: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Bojan Novak; Assoc. Prof. Dr. Branko Matjaž Jurič; Asst. Prof. Dr. Romana Vajde Horvat; Asst. Prof. Dr. Vili Podgorelec; Asst. Prof. Dr. Aleš Živkovič; Dr. Simon Beloglavec; Davor Bonačić, MSc; Boštjan Kežmah, MSc; Tomislav Rozman, BSc; Katja Harej, BSc; Gregor Polančič, Institute of Informatics IN - 3

BSc; Boštjan Šumak, BSc; Maja Pušnik, BSc; Marko Tekavc, BSc; Luka Pavlič, BSc; Andrej Krajnc, Ing.; Uroš Goljat, Ing.; Miha Strehar

COT - Centre of excellence for Advanced Information Technologies and Services (previously Object Technology Center)

Head: Prof. Dr. Ivan Rozman

Database Technology Laboratory

Head: Prof. Dr. Tatjana Welzer Družovec

Employees: Asst. Prof. Dr. Boštjan Brumen; Dr. Izidor Golob; Aida Kamišalić, BSc; Marko Hölbl, BSc; Zoran Kancler, Ing.

Computer Mediated Communication Laboratory

Head: Prof. Dr. József Györkös

Employees: Andrej Bregar, MSc; Boris Lahovnik, BSc

Real-Time Systems Laboratory

Head: Prof. Dr. Matjaž Colnarič

Employees: Asst. Prof. Dr. Domen Verber; Asst. Prof. Dr. Roman Gumzej; Dr. Matej Šprogar; Stanislav Moraus, BSc; Bojan Hadjar, Ing.; Rok Ostrovršnik, BSc IN - 4 Information Systems Laboratory

INFORMATION SYSTEMS LABORATORY

Head: Prof. Dr. Ivan Rozman Phone: +386 2 235 51 00 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Basic research project

CRP-3311-03- Metodologija razvoja integriranih informacijskih rešitev v 828898 konvergenčnem okolju (Methodology for the development of integrated information solutions in a convergent environment) Leader: Prof. Dr. Ivan Rozman (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Vili Podgorelec; Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Regina Polutnik, MSc; Boštjan Šumak; Maja Pušnik; Marko Tekavc; Miha Strehar; Boris Lahovnik Financed by: Ministry of the Information Society, Ministry of Education, Science and Sport of the Republic of Slovenia

The basic goal of the project is to introduce a unified methodology for the development of integrated information solutions in a convergent environment, which will consist of a methodological framework incorporating patterns, and the mechanisms for applying the methodology to real information systems according to several pilot implementations provided for particular approaches and methods. The following aspects will be covered: - Scientific: the design of a methodology for the development of integrated solutions represents a theoretical foundation within the form of the framework, which specifies a technology and platform independent approach to information systems integration, and covers both the development of new solutions as well as the integration of existing Information Systems Laboratory IN - 5

applications. - Strategic: the application of solution patterns provides definitions of certain restrictions, and thereby ensures the concordance of resulting solutions with accepted technological and semantic standards, as are the Single European Electronic Market standards (SEEM). - Practical: processes of methodology application to real information systems and pilot implementations offer organizations ways to quickly implement integration concepts, and to consequently gain practical value from projects without making too high investments. - Comparative: by defining the integrability index, it is possible to compare, using a unified, quantitative metric, the level of integration which is achieved by the information system of an organization and is expressed in the form of a multi-criteria vector.

Applied projects

ZRSZ01 Izobraževanje in svetovanje za razvoj sodobnih informacijskih rešitev v okolju .NET za Zavod Republike Slovenije za zaposlovanje (Training and consulting for the development of state-of-the-art IT solutions for the .NET Framework for the Employment Service of Slovenia) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science) Participants: Boštjan Kežmah, MSc; Assoc. Prof. Dr. Branko-Matjaž Jurič; Miha Strehar; Asst. Prof. Dr. Aleš Živkovič; Uroš Goljat; Andrej Krajnc; Boštjan Šumak; Luka Pavlič Financed by: Zavod Republike Slovenije za zaposlovanje

The training and consulting are some of the involved extensive topics of the .NET Framework software development, including object technology, C# programming language, integration with specific solutions and agile methods of software development.

L5 6708-0592-04 Referenčni model za nadaljnje vključevanje e-poslovanja v pravni sistem (Referential model for further integration of e-business into the juridical system) Participants: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Branko-Matjaž Jurič; Boštjan Kežmah, MSc; Andrej Krajnc; Uroš Goljat This interdisciplinary research from the domains of law and informatics is financed by the IN - 6 Information Systems Laboratory

Faculty of Law. Its goals are to further develop e-business and to increase confidence in it. Some contracts that are made over the electronic mail require a third independent party – an e-notary – to ensure proper judical protection. The primary aim of the research is to deal with external operation of jurisdiction and notaries, and with capabilities for composing e-notarial documents and the processing of e-certifications. The research addresses juridicially- regulated as well as technological challenges, and lays a foundation for introducing a referential model of the appropriate information architecture enabling efficient design and implementation of IT solutions. On the basis of the unified infrastructure and architecture, high integrability and connectivity will be assured, regardless of the heterogeneity of the applied programming tools and platforms. This kind of open architecture, which relies on such standards as XML and web services, is a necessary prerequisite for successful integration into international electronic business structures, such as SEEM (»Single European Electronic Market«).

Research and development projects

KZSEPOebXML Konceptualna zasnova sistema e-poslovanja na osnovi ebXML (Conceptual design of an e-business system based on ebXML) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Boštjan Šumak; Maja Pušnik; Andrej Krajnc Financed by: IRC Celje, d. o. o.

The goal of the project is to research and define the architectural and infrastructural models of an integrated e-business system, which is accordant with the ebXML (Electronic Business XML) specifications. The project will comprise the development of a standardized model for the creation and storage of selected documents, with regard to the directions of SEEM (Single European Electronic Market), the definition of corresponding vocabularies, schemes and ebXML Core Components, the proposal for operationalization of vocabulary transformation mechanisms, and the definition of transformation templates. A strategy for the establishment of an ebXML Messaging Services based architecture for the interchange of documents, and an ebXML Registry and Repository to locate and access selected ebXML documents, will be introduced as well. Information Systems Laboratory IN - 7

Industrial projects

OKTTxml Izobraževanje in svetovanje za potrebe razvoja varnih sodobnih programskih rešitev na osnovi storitveno naravnanih arhitektur, objektno-komponentnih tehnologij in tehnologij XML (Education and consulting for the needs of the development of secure contemporary IT solutions based on service oriented architectures, object and component oriented technologies, and XML technologies) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science), Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Maja Pušnik; Boštjan Šumak; Marko Tekavc; Miha Strehar; Andrej Krajnc Financed by: Iskratel Ltd.

The aim of the project is to offer an educational and consulting program for the needs of the development of secure contemporary IT solutions. The program is related to the domains of service oriented architecture, object and component-oriented technologies, and XML technologies, with a special emphasis on the transformations of XML documents, security of networks and information systems, contemporary architectures, UML modelling, software development processes, design patterns, agile methods, and the Java platform.

TPS COBISS Tehnološka prenova sistema COBISS (Technological Reengineering of COBISS System) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Boštjan Kežmah, MSc; Asst. Prof. Dr. Aleš Živkovič; Simon Beloglavec; Luka Pavlič; Assoc. Prof. Dr. Vili Podgorelec; Boštjan Šumak; Izidor Golob, PhD Financed by: IZUM

For the needs of COBISS information system reengineering, respectively COBISS 3 information system development, Institute of Informatics provides advisement services, education and qualifications on state-of-the-art information technologies and methodologies. The emphasis is given to the development of secure IT solutions in Java and other XML based technologies. In addition, the content related to multidimensional modelling, program code refactoring and semantic web technologies is addressed. IN - 8 Information Systems Laboratory

SPIPZ Sodelovanje in svetovanje pri uporabi sodobnih tehnologij in pristopov za razvoj informacijskih rešitev (Collaboration and consulting on the use of contemporary technologies and methodologies for the development of IT solutions) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Maja Pušnik; Boštjan Šumak; Marko Tekavc; Miha Strehar; Andrej Krajnc For the purpose of developing an information system that will be used by Zavarovalnica Maribor insurance company, Institute of informatics offers consulting and educational services related to the domains of XML technologies, web services, data base integration, security, object technology and component oriented development.

AGENRS2 Posodobitev programov in nadgradnja podatkovnih baz ter izmenjave podatkov za Agencijo RS za energijo (Software, database and data exchange upgrade of the Energy Agency of the Republic of Slovenia) Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science) Participants: Boštjan Kežmah, MSc; Uroš Goljat; Asst. Prof. Dr. Aleš Živkovič; Assoc. Prof. Dr. Branko-Matjaž Jurič; Miha Strehar; Simon Beloglavec; Boštjan Šumak; Maja Pušnik; Andrej Krajnc Financed by: Agencijo RS za energijo

The project involved software upgrade to Microsoft .NET Framework 2.0 and implementation of the solution for the management of energy licenses and integration with other software solutions of the Energy Agency of the Republic of Slovenia.

International projects

IUIVPSSEP Improvement of the efficiency and integration patterns for the needs of web services and e-business Leader: Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Marjan Heričko; Prof. Dr. Tatjana Welzer Družovec; Information Systems Laboratory IN - 9

Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Boštjan Šumak; Maja Pušnik The purpose of the project is to improve the efficiency of integration patterns for the needs of developing high quality web services and related information systems for e-business support, primarily for B2B (Business-to-Business) and B2G (Business-to-Government) integration. The project has the following goals: - identification of bottlenecks and disadvantages of existing integration patterns related to web services; - introduction and optimization of solutions to overcome the identified bottlenecks and disadvantages; - proof of improved efficiency by providing pilot models of e-business applications, which are exposed to measurements based on quantitative metrics defined within the model for the evaluating the efficiency of distributed architectures; - identification of improvements and best practices, and modification of integration patterns, with the aim of enhancing the efficiency of e-business applications through the use of web services; - definition of procedures to apply integration patterns to information systems of mainly small and medium sized enterprises (SME)

ManagerEUr ManagerEUr - Certified EU project manager Participants: Prof. Dr. Ivan Rozman; Asst. Prof. Dr. Romana Vajde Horvat; Katja Harej; Gregor Polančič; Tomislav Rozman; Regina Polutnik, MSc The project aims to develop a European skill card of a certified EU project manager. This skill card will be made available through an up-to-date solution (MM 1032 multimedia project CREDIT, 1998 – 2001), which offers an online system for browsing the skills card, performing self-assessment online, collecting evidences, and receive a formal assessment of the evidences online. A skills gaps profile will show which course modules the student still would have to attend to manage the accreditation as a certified EU project manager. The project will develop the courses, the skills card, and configure the accreditation system for online services. IN - 10 Information Systems Laboratory

Completed research projects 2005

Research and development project

ESCvPPT Elektronski sistem cestninjenja v prostem prometnem toku (Electronic Fee Collection for Free-Flowing Traffic) Leader: Ivan Vezočnik, PhD (IRC) Participants: Assoc. Prof. Dr. Marjan Heričko; Prof. dr. Ivan Rozman; Asst. Prof. Dr. Aleš Živkovič; Assoc. Prof. Dr. Branko-Matjaž Jurič; Simon Beloglavec; Marko Tekavc; Miha Strehar; Boštjan Šumak; Boštjan Kežmah, MSc; Luka Pavlič Financed by: Razvojni center IRC Celje Duration: Sep. 2003 to Dec. 2005 The project "Electronic Fee Collection for Free-Flowing Traffic" is the result of co-operation between Slovenian companies, universities and a national mobile telecommunications operator. Using the latest telecommunication and information technologies, the project resulted in a prototype solution that works on all highways in Slovenia. As a project partner, the members of the Institute of Informatics drew from their experience with object technology and component-based development to demonstrate the benefits and positive impacts that XML related technologies, SOA, BPEL, Java EE and business web portals may have on complex business solutions like tolling. In the next step, the initial working solution was put on trial, where a detailed performance analysis was carried out. The performance analysis demanded performance tuning for several critical system components that can now serve an expected number of vehicles and users. During the system’s development, a combination of agile and conventional software development methodologies were used to ensure quick delivery and sufficient formal documentation written in UML. Besides boasting the technical expertise needed for system design, as well as its implementation and integration with existing information systems, the group members had to excel in organizational and quality management knowledge that helped them find new organizational models as well as new business schemes for the future application of e-tolling. Being aware of past investments in DSRC technology, and the existing infrastructure, extensive research was done on the positive impacts that the two distinct technologies may have on the future of tolling in the EU. Information Systems Laboratory IN - 11

Schematic view of the system.

Industrial project

UPDA Upravljanje s poslovnimi dokumenti in arhiviranje (Business documents management and archival system) Leader: Assoc. Prof. Dr. Marjan Heričko Participants: Asst. Prof. Dr. Vili Podgorelec; Boštjan Kežmah, MSc; Miha Strehar Financed by: BuyITC inovativne internet rešitve d.o.o. Duration: Jul. 2005 to Dec. 2005 The goal of the whole project was to design and develop a system that allows companies an efficient business documents management throughout the whole document life cycle, from creation to archival and re-use. Our part within the project comprised the analysis of possible technologies for the implementation of business solutions for capturing output documents as a part of an integrated documenting system. Because of the variety of technical components which build business information environments of small and medium enterprises, the focus had to be moved towards universal capturing of output documents. It included the analysis of system connections of user software with the technological printing components and the usage of meta-data for high level of document capturing automatism within electronic archive. IN - 12 Information Systems Laboratory

PUBLICATIONS

Simon Beloglavec, Marjan Heričko, Matjaž B. Jurič, Ivan Rozman, “Analysis of the limitations of multiple client handling in a Java server environment,” SIGPLAN not., Vol. 40, No. 4, pp. 20- 28, Apr. 2005.

Boštjan Brumen, Tatjana Welzer-Družovec, Marjan Družovec, Izidor Golob, Hannu Jaakkola, Ivan Rozman, Jiři Kubalík, “Protecting medical data for decision-making analyses,” J. med. syst., Vol. 29, No. 1, pp. 65-80, Feb. 2005.

Marjan Heričko, Simon Beloglavec, “A composite design-pattern identification technique,” Informatica (Ljublj.), Vol. 29, pp. 469-476, 2005.

Urška Kežmah, Boštjan Kežmah, “Elektronske notarske storitve,” PP, Prav. praksa (Ljubl.), Vol. 24, No. 28, pril. pp. V-IX, 21. Jul. 2005.

Tomaž Kralj, Ivan Rozman, Marjan Heričko, Aleš Živkovič, “Improved standard FPA method - resolving problems with upper boundaries in the rating complexity process,” J. syst. softw., Vol. 77, pp. 81-90, 2005.

Jurij Laznik, Matjaž B. Jurič, Marjan Heričko, “Analysis and comparison of web services security standards,” Electrotechnical Review, Vol. 72, No. 1, pp. 58-63, 2005.

Vili Podgorelec, “Complexity-driven evolution of decision graphs for classification of medical data,” Informatica (Ljublj.), Vol. 29, No. 1, pp. 41-51, 2005.

Vili Podgorelec, Marjan Heričko, Matjaž B. Jurič, Ivan Rozman, “Improving the reliability of medical software by predicting the dangerous software modules,” J. med. syst., Vol. 29, No. 1, pp. 3-11, Feb. 2005.

Vili Podgorelec, Peter Kokol, Milojka Molan Štiglic, Marjan Heričko, Ivan Rozman, “Knowledge discovery with classification ruls in a cardiovascular dataset,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S39-S49, 2005.

Gregor Polančič, Marjan Heričko, Romana Vajde Horvat, “Open source software usage implications in the context of software development,” Informatica (Ljublj.), Vol. 29, pp. 483- 490, 2005.

Aleš Živkovič, Marjan Heričko, Boštjan Brumen, Simon Beloglavec, Ivan Rozman, “The impact of details in the class diagram on software size estimation,” Informatica (Vilnius), Vol. 16, No. 2, pp. 295-311, 2005. Information Systems Laboratory IN - 13

Aleš Živkovič, Ivan Rozman, Marjan Heričko, “Automated software size estimation based on function points using UML models,” Inf. softw. technol., Vol. 47, pp. 881-890, 2005.

Urška Kežmah, Boštjan Kežmah, “Sestava in arhiviranje elektronskih notarskih listin,” Teh. vseb. probl. klas. elektron. arh., No. 4, pp. 176-183, 2005.

Simon Beloglavec, Marjan Heričko, “Sistematično iskanje primernih realizacij enostavnih in sestavljenih načrtovalskih vzorcev,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 253-256.

Igor Brejc, Marjan Heričko, “Uporaba ontologij pri opisovanju in svetovanju o načrtovalskih vzorcih,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 257-260.

Boštjan Brumen, Tatjana Welzer-Družovec, Ivan Rozman, Marko Hölbl, Hannu Jaakkola, “Convergence detection criteria for classification based on final error rate,” IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 41-45.

Katja Harej, “Tehnologije za podporo sodelovanju v virtualni skupnosti,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 121-124.

Katja Harej, Romana Vajde Horvat, Richard Messnarz, “The EU project manager job role: a skill card definition and online assessment,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 97-100.

Marko Hrovatič, Matjaž B. Jurič, “Method for automatic contract-first web sevices formation,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 265-268.

Matjaž B. Jurič, Kimmo Salmenjoki, Marjan Heričko, “Integration patterns efficiency optimization for web services and e-business,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 261-264.

Aida Kamišalić, Tatjana Welzer-Družovec, Marjan Heričko, Izidor Golob, Boštjan Brumen, “Patterns for grid environment,” 11th International conference on Systems reserch, informatics and cybernetics, Baden-Baden, Germany, aug. 2005, Vol. 12, pp. 57-64.

Boštjan Kežmah, “Varnost v informacijski družbi,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 138-141. IN - 14 Information Systems Laboratory

Boštjan Kežmah, Urška Kežmah, “The problem of trust in electronic transactions - the case of e-notary public in Slovenia,” IIS 2005: conference proceeding, 16th International Conference on Information and Intelligent Systems, Varaždin, Croatia, Sep. 2005, pp. 279-284.

Urška Kežmah, Boštjan Kežmah, “Evropski register oporok,” Uprava med politiko in stroko, 2005.

Andrej Krajnc, Marjan Heričko, “Primerjava pristopov k dokumentiranju ogrodij,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 249-252.

Jurij Laznik, Matjaž B. Jurič, “Pristopi za modeliranje poslovnih procesov,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 269-272.

Vili Podgorelec, Marjan Heričko, Ivan Rozman, “Improving mining of medical data by outliers prediction,” Proceedings(Proceedings - IEEE Symposium on Computer-Based Medical Systems), Eighteenth IEEE symposium on computer-based medical systems, Dublin, Irland, Jun. 2005, pp. 91-96.

Vili Podgorelec, Ivan Rozman, “Primerjava kompleksnosti programske opreme in UML diagramov,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 23-26.

Vili Podgorelec, Tatjana Welzer-Družovec, Ivan Rozman, “Some applications od intelligent systems in medicine,” Proceedings, IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 35-39.

Gregor Polančič, “Implikacije sodelovanja z odprto-kodnimi projekti,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 152-155.

Gregor Polančič, “Odprta koda pri študiju informatike,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 117-120.

Gregor Polančič, “Prednosti in tveganja vpeljave ponovne uporabe v procese razvoja programske opreme,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 245-248.

Gregor Polančič, Romana Vajde Horvat, “What makes open source frameworks so successful?,” IIS 2005: conference proceeding, 16th International Conference on Information and Intelligent Systems, Varaždin, Croatia, Sep. 2005, pp. 19-26. Information Systems Laboratory IN - 15

Maja Pušnik, Boštjan Šumak, Matjaž B. Jurič, Marjan Heričko, “Ugotavljanje zrelosti integracije na nivoju poslovnih procesov s pomočjo indeksa integrabilnosti,” Informatika kot temelj povezovanja: zbornik posvetovanja, DSI - Dnevi slovenske informatike 2005, Portorož, Slovenia, Apr. 2005, pp. 11-14.

Lorna Uden, Kimmo Salmenjoki, Marjan Heričko, Gurumusamy Arumugam, “Collaborative research between universities,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 109-112.

Tatjana Welzer-Družovec, Marjan Družovec, Katja Udir Mišič, Marko Hölbl, “Media communication study an integration of technical and sociological studies,” New horizons in industry, business and education: proceedings of the Forth International Conference, Corfu, Greece, aug. 2005, pp. 90-95.

Aleš Živkovič, Marjan Heričko, “Izboljšanje ocen trajanja projekta z uporabo metode IOOFP,” Informatika kot temelj povezovanja: zbornik posvetovanja, DSI - Dnevi slovenske informatike 2005, Portorož, Slovenia, Apr. 2005, pp. 329-334.

Matjaž B. Jurič, “Storitvena arhitektura - zgolj kompozicija spletnih storitev?,” Objektna tehnologija v Sloveniji - OTS'2005: zbornik desete konference, Maribor, Slovenia, Jun. 2005, pp. 7-12.

Boštjan Kežmah, “Praktični vidiki zagotavljanja varnosti pri razvoju informacijskih rešitev,” Objektna tehnologija v Sloveniji - OTS'2005: zbornik desete konference, Maribor, Slovenia, Jun. 2005, pp. 156-163.

Urška Kežmah, Boštjan Kežmah, “Elektronske notarske storitve,” Informatika in pravo: zbornik prve konference, 2005, pp. 49-62.

Andrej Krajnc, Ciril Petr, Gorazd Kos, Bojan Štok, “Razvojna okolja kot ogrodja,” Objektna tehnologija v Sloveniji - OTS'2005: zbornik desete konference, Maribor, Slovenia, Jun. 2005, pp. 59-71.

Gregor Polančič, “Razvoj informacijskega portala pri predmetu informacijska družba,” Kolokvij Komuniciranje v informacijski družbi. Vol. 3, Aplikacije v luči zasebnosti in varnosti, 2005, pp. 1-11.

Urška Kežmah, Boštjan Kežmah, “Sestava in arhiviranje elektronskih notarskih listin,” Teh. vseb. probl. klas. elektron. arh., No. 4, pp. 176-183, 2005. IN - 16 Information Systems Laboratory

PRESENTATIONS BY THE LABORATORY MEMBERS

Marjan Heričko: “Java programming”, lectures in the Department of Computer Science, University of Vaasa, Finland, from Mar. 21 to April 22, 2005.

Matjaž B. Jurič: “Component based technologies and software patterns in the software engineering work”, lectures in the Department of Computer Science, University of Vaasa, Finland, Mar. 21-26, 2005.

Matjaž B. Jurič: “Advanced BPEL: faults, event handling, correlation, BPEL 2.0, and more”, presentation on Oracle OpenWorld, Agenda and show grid, San Francisco, Sep. 17-22, 2005.

Maja Pušnik, Marjan Heričko: “BPEL in storitvene arhitekture”, predavanje na 10. strokovnem srečanju uporabnikov programske opreme Oracle SIOUG 2005 in Oracle konferenci za razvijalce, Portorož, Slovenia, Sep. 18-21, 2005.

Boštjan Šumak, Maya Pušnik, Luka Pavlič: “Podpora tehnologijam XML v podatkovni bazi Oracle”, predavanje na 10. strokovnem srečanju uporabnikov programske opreme Oracle SIOUG 2005 in Oracle konferenci za razvijalce, Portorož, Slovenia, Sep. 18-21, 2005.

Aleš Živkovič: “e-Toll Collection - Electronic Fee Collection for Free-Flowing Traffic,” the conference eChallenges in Ljubljana, Ljubljana, Slovenia, Oct. 19, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Asst. Prof. Dr. Vili Podgorelec: Programme committee chairman, international conference, The IASTED Conference Software Engineering 2005, Innsbruck, Austria, Feb. 15–17, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, IASTED International Conference on Software Engineering and Applications, Innsbruck, Austria, Feb. 15–17, 2005.

Assoc. Prof. Dr. Marjan Heričko: Programme committee member, conference, 5th International SPICE Conference on Process Assessment and Improvement, Celovec, Austria, Apr. 28–29, 2005.

Assoc. Prof. Dr. Marjan Heričko: Reviewer, conference, 5th International SPICE Conference on Process Assessment and Information Systems Laboratory IN - 17

Improvement, Celovec, Austria, Apr. 28–29, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, 16th IRMA International Conference, San Diego California, United States, May 23–26, 2005.

Assoc. Prof. Dr. Marjan Heričko: Programme committee member, arrangement, HEVREKA! 05 Stičišče novih tehnologij in storitev, Ljubljana, Slovenia, May 24–28, 2005.

Asst. Prof. Dr. Aleš Živkovič: Organising committee chairman, conference, Object technology in Slovenia, Maribor, Slovenia, June 15–16, 2005.

Simon Beloglavec, Organising committee member, conference, Object Luka Pavlič, technology in Slovenia, Maribor, Slovenia, June Uroš Goljat, 15–16, 2005. Andrej Krajnc, Marko Tekavc, Boštjan Kežmah, MSc, Miha Strehar, Boštjan Šumak:

Assoc. Prof. Dr. Marjan Heričko: Programme committee chairman, conference, Object technology in Slovenia, Maribor, Slovenia, June 15–16, 2005.

Asst. Prof. Dr. Aleš Živkovič, Programme committee member, conference, Prof. Dr. Ivan Rozman, Object technology in Slovenia, Maribor, Slovenia, Assoc. Prof. Dr. Branko-Matjaž Jurič: June 15–16, 2005.

Uroš Goljat, Organising committee member, conference, Boštjan Šumak, Information science and law, Maribor, Slovenia, Boštjan Kežmah, MSc, June 16–16, 2006. Andrej Krajnc, Miha Strehar:

Assoc. Prof. Dr. Marjan Heričko, Programme committee member, conference, Asst. Prof. Dr. Aleš Živkovič, Information science and law, Maribor, Slovenia, Boštjan Kežmah, MSc: June 16–16, 2006.

Asst. Prof. Dr. Vili Podgorelec: Member of steering committee, international IN - 18 Information Systems Laboratory

conference, IEEE symposium on Computer Based Medical Systems, Dublin, Ireland, June 22–24, 2005.

Asst. Prof. Dr. Vili Podgorelec: Reviewer, international conference, IEEE symposium on Computer Based Medical Systems, Dublin, Ireland, June 22–24, 2005.

Tomislav Rozman, Programme committee member, international Katja Harej: conference, International Conference on Information Management in Modern Enterprise, Lisbon, Portugal, July 5–7, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, The 9th World Multi- Conference on Systemics, Cybernetics and Informatics, Orlando, Florida, United States, July 10–13, 2005.

Assoc. Prof. Dr. Marjan Heričko: Member of international programme board, international workshop, SESAMOSS - Sharing ExperienceS on Agile Methodologies in Open Source Software development, Genova, Italy, July 11, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, International Conference on Computing, Communications and Control

Technologies, Austin, Texas, United States, July 24–27, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, Internet and Multimedia Systems and Applications, Honolulu, Hawaii, United States, Aug. 15–17, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, conference, Modelling, Simulation, and Optimization, Oranjestad, Aruba, Aug. 29–31, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer, congress, IEEE Congress on Evolutionary Computation, Edinburgh, United Kingdom, Sept. 2–5, 2005. Information Systems Laboratory IN - 19

Assoc. Prof. Dr. Marjan Heričko: Programme committee chairman, conference, Collaboration and information society, Ljubljana, Slovenia, Oct. 10–14, 2005.

Prof. Dr. Ivan Rozman: Programme committee chairman, conference, Development and re-engineering of Information Systems, Ljubljana, Slovenia, Oct. 10–14, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič, Programme committee member, conference, Asst. Prof. Dr. Aleš Živkovič: Collaboration and information society, Ljubljana, Slovenia, Oct. 10–14, 2005.

Assoc. Prof. Dr. Marjan Heričko, Programme committee member, conference, Assoc. Prof. Dr. Branko-Matjaž Jurič: Development and re-engineering of Information Systems, Ljubljana, Slovenia, Oct. 10–14, 2005.

Assoc. Prof. Dr. Marjan Heričko, Member of international programme board, Prof. Dr. Ivan Rozman: international conference, Information society 2005, Ljubljana, Slovenia, Oct. 10–17, 2005.

Asst. Prof. Dr. Vili Podgorelec: Reviewer, international conference, The 9th IASTED International Conference on Software engineering and Applications, Phoenix, Arizona, United States, Nov. 14–16, 2005.

Tomislav Rozman, Programme committee member, international Katja Harej: conference, 5th IBIMA International Conference on Internet & Information Technology in Modern Organizations, Cairo, Egypt, Dec. 13–15, 2005.

Asst. Prof. Dr. Vili Podgorelec: Reviewer, international conference, 5th IBIMA International Conference on Internet & Information Technology in Modern Organizations, Cairo, Egypt, Dec. 13–15, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Information and Software Technology Journal.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Performance Evaluation Journal.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for John Wiley & Sons, Ltd. IN - 20 Information Systems Laboratory

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for International Journal of Distance Education Technologies.

Assoc. Prof. Dr. Marjan Heričko: Reviewer for Uporabna informatika.

Asst. Prof. Dr. Vili Podgorelec: Reviewer for Informatica Medica Slovenica.

Asst. Prof. Dr. Vili Podgorelec: Reviewer for IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Journal of Systems and Software.

Prof. Dr. Ivan Rozman: Reviewer for Uporabna informatika.

Assoc. Prof. Dr. Marjan Heričko, Reviewer for Organizacija – revija za management, Assoc. Prof. Dr. Branko-Matjaž Jurič: informatiko in kadre.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Journal of Systemics, Cybernetics and Informatics.

VISITS TO OTHER INSTITUTIONS

Assoc. Prof. Dr. Marjan Heričko: Scientific cooperations, research work, Vaasa, Finland, Mar. 21–Apr. 22, 2005.

Assoc. Prof. Dr. Marjan Heričko: Invited lecturer, formal call, Vaasa, Finland, Mar. 21–Apr. 22, 2005.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Improvement of integration patterns efficiency for the needs of web services and e-business, formal call, Vaasa, Finland, Apr. 21–29, 2005.

Assoc. Prof. Dr. Marjan Heričko: Member of slovenian delegation at the Ministerial Conference Towards a Knowledge society – the Nordic experience, formal call, Göteberg, Sweden, Nov. 14–15, 2005.

Assoc. Prof. Dr. Marjan Heričko: Invited participant at the Microsoft Higher Education Advisory Summit 2005, formal call, Buckinghamshire, Great Britain, Nov. 28–29, 2005. Information Systems Laboratory IN - 21

Asst. Prof. Dr. Aleš Živkovič: Visit to the ERTICO ITS Europe Company and discussion of cooperation on the Road Charging Interoperability (RCI) project, formal call, Brussels, Belgium, Dec. 20–23, 2005.

GUESTS AND VISITORS

Giancarlo Succi Invited speaker on 10th conference OTS'2005 (Free University of Bolzano, 39100 Objektna tehnologija v Sloveniji, June 15, 2005. BOZEN-BOLZANO (BZ), Italy), Dave Thomas (Bedarra Research Labs, Ottawa Ontario, Canada):

Jose Sigut, Cooperation in the area of inteligent systems, Jose Luis Sanchez, formal call, Sept. 21–22, 2005. Silvia Alayon (University of La Laguna, Tenerife, La Laguna, Spain):

Kimmo Salmenjoki Scientific and research cooperation, research work, (University of Vaasa, Vaasa, Finland): Oct. 8–25, 2005.

IN - 22 Database Technologies Laboratory

DATABASE TECHNOLOGIES LABORATORY

Head: Prof. Dr. Tatjana Welzer Družovec Phone: +386 2 235 51 30 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Applied projects

IPPM Izobraževanje in svetovanje za področje podatkovnega modeliranja (Training and consulting for data modeling) Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Marko Hölbl, Asst. Prof. Dr. Boštjan Brumen, Aida Kamišalić, Dr. Izidor Golob Project partners: SRC.SI, d. o. o. Financed by: SRC.SI, d. o. o.

The project includes training and consultations for the field a data modeling; from requests to a conceptual model and from the conceptual model to analytical systems, including consulting from mentioned areas.

Industrial projects

EIM Spletne strani EIM (EIM web pages) Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Database Technologies Laboratory IN - 23

Participants: Zoran Kancler, Dr. Marko Ivanišin, Dr. Izidor Golob, Katja Udir-Mišič Project partners: Economic Institute Maribor Ltd. Financed by: Economic Institute Maribor Ltd.

Project includes analysis of customer requests, the preparation of a proposed solution, the realization of the chosen solution and user training. Analysis and proposed solution for a part of requirements are already done, upgrade is in preparation.

International projects

IUIVPSSEP Improvement of the efficiency and integration patterns for the needs of web services and e-business Leader: Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science) Participants: Simon Beloglavec; Boštjan Šumak; Boštjan Kežmah, MSc; Aleš Živkovič, MSc; Prof. Dr. Tatjana Welzer Družovec; Assoc. Prof. Dr. Marjan Heričko; Maja Pušnik The purpose of the project is to improve the efficiency of integration patterns for the needs of developing high quality web services and related information systems for e-business support, primarily for B2B (Business-to-Business) and B2G (Business-to-Government) integration. The project has the following goals: - identification of bottlenecks and disadvantages of existing integration patterns related to web services; - introduction and optimization of solutions to overcome the identified bottlenecks and disadvantages; - proof of improved efficiency by providing pilot models of e-business applications, which are exposed to measurements based on quantitative metrics defined within the model for the evaluation of efficiency of distributed architectures; - identification of improvements and best practices, and modification of integration patterns, with the aim of enhancing the efficiency of e-business applications through the use of web services; - definition of procedures to apply integration patterns to information systems of mainly small and medium sized enterprises (SME)

DAMAS Data Mining - Its Assessment and Security Leader: Hannu Jaakkola (Tampere University of Technology), Prof. Dr. IN - 24 Database Technologies Laboratory

Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Boštjan Brumen, Marko Hölbl Project partners: Tampere University of Technology, Pori, Finland Financed by: Finish Academy, Slovenian Research Agency

Data mining is an interdisciplinary research area; the techniques are highly relevant for research in other scientific fields such as Bioinformatics, Economy, Software Engineering, and alike. Domain knowledge available in those disciplines can improve Data Mining applications. The creation of intelligent environment poses many challenges, many of which can be solved using intelligent data analysis into organizational, business and industrial processes. Automated programs for learning are needed for the machines to become easy-to-use instruments of daily life. Information handling must move from today’s data-storage perspective to future data analysis perspective. The challenge is to integrate the data mining into database management systems and using them as a unit in the knowledge management systems. Within the project, we research: • assessment of machine learning algorithms • identification of security issues in data mining • data mining and software quality control.

DaMiMTa II Data Mining Methods and Their Application II Leader: Jiři Kubalík (Czech Technical University Prague), Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Boštjan Brumen, Dr. Izidor Golob, Vaclav Chudacek, Lenka Nováková, Filip Zelezny, Jan Macek, Aida Kamišalić, Asst. Prof. Dr. Vili Podgorelec Project partners: Czech Technical University Prague, Prague, Czech Republik Financed by: Slovenian Research Agency, Czech Ministry of Education, Youth and Sport

Knowledge Discovery or Data Mining is the partially automated process of extracting patterns from databases. It has proven to be a promising approach for enhancing the intelligence of systems and services. We see a prosperous and still growing research field with important commercial applications. The link between machine learning, statistics and database technology leads to increasing cross-fertilization and sophistication in data analysis. Database Technologies Laboratory IN - 25

GRID technology is a new emerging computation paradigm that combines distributed computers to solve time-consuming problems using idle computing cycles. GRID computing has emerged as an important new field, distinguished from conventionally distributed computing by its focus on large-scale inter-organizational resource sharing, innovative applications, and high-performance orientation. The most important impact GRID systems can have on data mining is the potential to solve computationally and data intensive problems. Because of the new paradigm, the already solved problems need to be re- addressed in the light of new architecture and new requirements. The challenge of embedding data mining in organizational, business, industrial processes and other application fields is in line with the creation of an ambient intelligence landscape. In order to move from a task-centred (performance first) to a human-centred (understanding first) vision of information handling, automated programs for learning (Machine Learning) and for data analysis (Data Mining) should become familiar, easy-to-use instruments of everyday life. Research is based on the experience of both partner teams in machine learning, databases, data warehousing, visualization and Grid technology.

BI-PT/04-05-5 Improving information quality in data warehousing environments Leader: Orlando Belo (University of Minho), Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Pedro Manuel Rangel Santos Henriques, Paulo Jorge de Sousa Azevedo, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen, Aida Kamišalić, Anália Maria Garcia Lourenço Project partners: University of Minho, Braga, Portugal Financed by: Ministerio da Ciencia e do Ensino superior, Slovenian Research Agency

The project research methods and techniques to improve information quality in large data resources, especially data warehouses. Information quality is becoming increasingly important for today's business because of knowledge workers' constantly growing demands for data analysis. Research goals are: to study information quality in a data warehousing environment, to improve information quality and its influence in the business processes, and to develop better populating processes.

IDMTiIS Integration of Data Mining Techniques into Intelligent Systems Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science), Apostolos Papadopoulos (Aristotle University of Thessaloniki, Department of Informatics) IN - 26 Database Technologies Laboratory

Participants: Yannis Manolopoulos, Alexandros Nanopoulos, Aida Kamišalić, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen Project partners: Aristotle University of Thessaloniki, Department of Informatics, Thessaloniki, Greece Financed by: Slovenian Research Agency, Vlada Helenske republike

Data mining is an interdisciplinary research area. The results of data mining find a variety of applications, for instance: in bioinformatics, economy, software engineering, etc. The creation of an intelligent environment poses several challenges, many of which can be solved using intelligent data analysis into organizational, business and industrial processes. Information handling must move from today’s data-storage perspective to future data analysis perspective. The challenge is to integrate the data mining into database management systems and using them as a unit in the knowledge management systems. The objective of the project is to contribute to the integration of the developed data mining techniques into intelligent systems. Between goals are incorporated research results for the daily usage.

BI-Španija/04-05-7 Knowledge generation and exploitation in wholistic medical treatments Leader: David Riano (Rovira i Virgili University), Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Asst. Prof. Dr. Marjan Družovec, Antonio Moreno, Aida Kamišalić, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen, Susana Prado, Aida Valls, John Alexander Bohada Project partners: Rovira i Virgili University, Tarragona, Spain Financed by: Slovenian Research Agency, Ministerio de Asuntos Exteriores

The huge amount of data amassed in healthcare centres fosters the so-called evidence- based medicine. It is as a way of taking medical decisions which are endorsed in the decisions that the physicians of the centre took in the past. We defined the appropriate information systems to store medical requirements and developed a conceptual model in order to automatically generate diagnosis, treatment and prognosis knowledge. Database Technologies Laboratory IN - 27

Completed research projects 2005

Basic research project

CRP-OEDSDM Optimalno izkoriščanje podatkovnih virov pri podatkovnem rudarjenju (Optimal explotation of data sources for data mining) Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Prof. Emeritus Dr. Bruno Stiglic, Tomaž Mohorič, Asst. Prof. Dr. Boštjan Brumen, Asst. Prof. Dr. Marjan Družovec, Dr. Izidor Golob Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of the Information Society

Duration: Oct. 2003 to Sept. 2005

Optimal exploitation of data resources for data mining is the problem we are addressing inside the research area of GRID technology. Data mining is one of the most important researching areas of knowledge discovery. Data mining is defined as »nontrivial identification process of valid, new, potentially applicable, and in the final phase, understandable patterns in data«. The knowledge discovery process is a combination of machine learning, statistics, artificial intelligence and recently distributed computing (and many other areas). In the project we have used new technologies for the optimal usage of available data for the development of a predictive model to satisfy users' expectations and needs.

International project

BI-PL/04-05-10 Improving Information Quality Leader: Tadeusz Morzy (Poznan University of Technology, Institute of Computing Science), Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Izidor Golob, Zbyszko Krolikowski, Marek Wojciechowski, Robert Wrembel, Asst. Prof. Dr. Boštjan Brumen, Maciej Zakrzewicz Project partners: Poznan University of Technology, Institute of Computing Science, Poznan, Poland Financed by: Slovenian Research Agency, Ministry of Science and Information Society Technologies of Poland IN - 28 Database Technologies Laboratory

Duration: Jan. 2004 to Dec. 2005

Information quality is measured by information quality attributes that include, but are not limed to completeness, accuracy, precision, timeliness and usefulness. Reasons for low information quality thus lie, not only in the content of data (value) or its context description (definition) or data model (architecture), but also in the misinterpretation of data as presented (presentation). Better quality information lets an organization improve the decision-making process by basing it on objective facts collected from the field using various systems. Improved information quality also helps the organization discover cross-marketing opportunities for increasing revenues and reduced costs from error detection and correction. Ultimately, improved information quality builds credibility and improves the image of the overall data resource to the information consumer. On the other hand, not meeting the required level of information quality, required by downstream information consumer, results in scrap and rework, redundant and cost-adding activities. At bottom line, unsatisfactory information quality has a negative effect on the external customer, and finally leads to his dissatisfaction. In the project we have researched good and bad practice in partner's environments and defined on these basic quality dimensions.

4908701.01.01.0006 e-SLOG for SMEs Leader: Dubravka Breznik (Maribor Chamber of Commerce and Industry) Participants: Assoc. Prof. Dr. Marjan Heričko, Prof. Dr. Tatjana Welzer Družovec, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen, Aida Kamišalić, Aleš Vrabič Project partners: Wirtschaftskammer Steiermark, Slovak Chamber of Commerce and Industry Regional Chamber Nitra, Slovenian Chamber of Commerce and Industry - Regional Chamber Maribor Financed by: European Union

Duration: Feb. 2004 to Feb. 2005

The project introduced e-business in a group of SMEs ready for the shift to completely paperless operation, covering all phases from order, despatch to invoice. Good practice have been used for the introduction of such e-business in a larger number of SMEs. Through the participation of our partner from Slovakia we have done a feasibility study concerning the introduction of e-business in a group of SMEs in the Nitra Region and, consequently, further implementation of good practice in the country or other future/new EU Member State. Database Technologies Laboratory IN - 29

4908701.01.01.0003 E - marketing as a Tool for Conquering the European Market Leader: Brigita Horvat (Human Resource Management Fund) Participants: Aida Kamišalić, Asst. Prof. Dr. Marjan Družovec, Prof. Dr. Tatjana Welzer Družovec, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen Project partners: Human Resource Management Fund, , Atlanta, d. o. o., Mediamix, d. o. o., Ra-Gazela Ltd Financed by: European Union

Duration: Feb. 2004 to Feb. 2005

The goal of the project was to encourage effective take-up of ICT and Internet as a business tool for on-line marketing which will enable SME's in cross-border regions to become more innovative, competitive in their marketing approach when entering global markets and to create innovative services and mechanisms within e-marketing portals, as well as virtual marketing products supported by Web technologies. Direct beneficiaries are small and medium sized enterprises in the cross-border regions of Podravje and Styria. Indirect beneficiaries are students, marketing experts, business counsellors, training providers, market and commercial services providers. The main activities of the project were e-marketing portal concept and contents development, verifying the suitability of e-marketing portal concept among SMEs, construction and designing of e-marketing portal, testing of e-marketing portal and mentoring SMEs, promotion activities. The portal is in use.

PUBLICATIONS

Boštjan Brumen, Tatjana Welzer-Družovec, Marjan Družovec, Izidor Golob, Hannu Jaakkola, Ivan Rozman, Jiři Kubalík, “Protecting medical data for decision-making analyses,” J. med. syst., Vol. 29, No. 1, pp. 65-80, Feb. 2005.

Marjan Družovec, Tatjana Welzer-Družovec, Boštjan Brumen, “Agent oriented approach to handling medical data,” J. med. syst., Vol. 29, No. 1, pp. 45-57, Feb. 2005.

Tatjana Welzer-Družovec, Boštjan Brumen, Izidor Golob, José Luis Sánchez, Marjan Družovec, “Diagnostic process from the data quality point of view,” J. med. syst., Vol. 29, No. 1, pp. 59-63, Feb. 2005.

Aleš Živkovič, Marjan Heričko, Boštjan Brumen, Simon Beloglavec, Ivan Rozman, “The impact of details in the class diagram on software size estimation,” Informatica (Vilnius), Vol. 16, No. 2, pp. 295-311, 2005. IN - 30 Database Technologies Laboratory

John A. Bohada, Aida Kamišalić, David Riaňo, Tatjana Welzer-Družovec, “Data modelling for medical knowledge production,” Improving the quality of health information: an international perpective: Proceedings of the 10th international symposium on health information management research, iSHIMR 2005, Solun, Greece, Sep. 2005, pp. 84-92.

Boštjan Brumen, Tatjana Welzer-Družovec, Ivan Rozman, Marko Hölbl, Hannu Jaakkola, “Convergence detection criteria for classification based on final error rate,” IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 41-45.

Izidor Golob, Orlando Belo, Tatjana Welzer-Družovec, “O zagotavljanju kakovostnih informacij v podatkovnem skladišču,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 109-112.

Marko Hölbl, Boštjan Brumen, Tatjana Welzer-Družovec, “ECDSA - Alternativa DSA pri digitalnem podpisovanju,” Proceedings of the 14th Electrotechnical and Computer Science Conference ERK 2005, Portorož, Slovenia, Sep. 2005, Vol. B, pp. 101-104.

Marko Hölbl, Boštjan Brumen, Tatjana Welzer-Družovec, “Effects of security flaws in hash algorithms with respect to Slovenian legislation,” Zbornik 8. mednarodne multikonference Informacijska družba IS 2005, Ljubljana, Slovenia, Oct. 2005, pp. 133-137.

Aida Kamišalić, Tatjana Welzer-Družovec, Marjan Heričko, Izidor Golob, Boštjan Brumen, “Patterns for grid environment,” 11th International conference on Systems reserch, informatics and cybernetics, Baden-Baden, Germany, aug. 2005, Vol. 12, pp. 57-64.

Vili Podgorelec, Tatjana Welzer-Družovec, Ivan Rozman, “Some applications od intelligent systems in medicine,” Proceedings, IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 35-39.

Petra Povalej, Peter Kokol, Tatjana Welzer-Družovec, Bruno Stiglic, “Machine-learning with cellular automata,” Advances in intelligent data analysis VI: 6th international symposium on intelligent data analysis, IDA 2005, Madrid, Spain, Sep. 2005, pp. 305-315.

Tatjana Welzer-Družovec, Marjan Družovec, Izidor Golob, Aida Kamišalić, “Internationalization as a part of the database development,” Proceedings, IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 145-147.

Tatjana Welzer-Družovec, Marjan Družovec, Katja Udir Mišič, Marko Hölbl, “Media communication study an integration of technical and sociological studies,” New horizons in industry, business and education: Proceedings of the 4th International Conference, Corfu, Greece, aug. 2005, pp. 90-95. Database Technologies Laboratory IN - 31

Jasmin Malkić, Nermin Sarajlić, Tatjana Welzer-Družovec, “Aritmetička svojstva algoritama kriptografije ellptičnih krivih,” VII bosansko hercegovačko savjetovanje, Neum, BIH, Sep. 2005.

PRESENTATIONS BY THE LABORATORY MEMBERS

Aida Kamišalić: “Data modelling”, Socrates Erasmus teaching mobility at the Rovira i Virgili University in Tarragona, Spain, Technical school of engineering, Department of computer engineering and mathematics Taragona, Spain, from June 6 to June 30, (16 hours), 2005.

Tatjana Welzer-Družovec: “Cultural differences: Slovenia in Europe so different and so similar”, Socrates Erasmus teaching mobility, IUT Marseille, Université Paul Cézanne, Aix- Marseille III, Marseille, France, from June 27 to June 29, (8 hours), 2005.

Tatjana Welzer Družovec: “Quality of data,” Socrates-Erasmus teaching mobility, Universite D'Avignon et des Pays de Vaucluse, Avignon, France, June 27, 2005.

Matjaž Planinšič: “Introduction to Matlab/Simulink for students,” course on the use of Matlab/Simulink program package for students, Maribor, Slovenia, Sept. 29, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Tatjana Welzer Družovec: Advisory board member, expert consultation, Promotion Bologna process 2005/2006 Slovenia, Ljubljana, Slovenia, Jan. 1 to Dec. 31, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, International Workshop on e-Learning Online Communities, Cairo, Egypt, Jan. 3, 2005.

Prof. Dr. Tatjana Welzer Družovec: Session chair, conference, »Alternative Approaches in Information Systems« and »Application in Knowledge Based Systems«, 3rd International Conference on Computational Cybernetics, Balaclava, Grand Baie, Mauritius, Apr. 13–14, 2005.

Prof. Dr. Tatjana Welzer Družovec: Programme committee member and organiser of the session »Data technology«, conference, 12th Conference Days of Slovenian Informatics 2005, Portorož, Slovenia, Apr. 13–15, 2005. IN - 32 Database Technologies Laboratory

Dr. Izidor Golob: Programme committee member and organiser of the session »Data technology«, conference, 12th Conference Days of Slovenian Informatics 2005, Portorož, Slovenia, ApriI 13-15, 2005

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, 17th Conference on Advance Information System Engineering, Porto, Portugal, June 13–17, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, international conference, IEEE symposium on Computer Based Medical Systems, Dublin, Ireland, June 22–24, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, 5th International Workshop on Web Based Collaboration, Copenhagen, Denmark, May 30–June 1, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, 20th IFIP International Information Security Conference, Chiba, Japan, Aug. 23–26, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, Advances in Database and Information Systems, Tallin, Estonia, Sept. 12–15, 2005.

Prof. Dr. Tatjana Welzer Družovec: Member of international programme committee, conference, Information Technologies in Enviromental Enginering, Magdeburg, Germany, Sept. 25–27, 2005.

Prof. Dr. Tatjana Welzer Družovec: Programme committee member, conference, Development and re-engineering of Information Systems, Ljubljana, Slovenia, Oct. 10–14, 2005.

Prof. Dr. Tatjana Welzer Družovec: Programme committee chairman - session demos and posters, conference, 24th International Conference on Conceptual Modeling, Klagenfurt, Database Technologies Laboratory IN - 33

Austria, Oct. 24–28, 2005.

Prof. Dr. Tatjana Welzer Družovec: Reviewer for Uporabna informatika, reviewer and editor committee member.

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Tatjana Welzer Družovec: Presentation of study programs, working visit, City University London, London, United Kingdom, Jan. 20–26, 2005.

Prof. Dr. Tatjana Welzer Družovec: Visit through the project Partnership in science, working visit, Middelsex University, London, United Kingdom, Jan. 20–26, 2005.

Prof. Dr. Tatjana Welzer Družovec: Socrates-Erasmus teacher mobility, Marseille, France, June 26-28, 2005

Dr. Izidor Golob: Visit within the project "Perceiving And Enacting Social And Political Identities In Slovenia and United States – A view from globalization and European integration perspective", working visit, St. Louis, MO 63103, United States, Mar. 9–31, 2005.

Prof. Dr. Tatjana Welzer Družovec: Socrates-Erasmus teacher mobility programm, working visit, Avignon, France, June 28 to July 1, 2005.

Asst. Prof. Dr. Boštjan Brumen: Socrates-Erasmus teacher mobility, working visit, Pori, Finland, July 19–26, 2005.

Asst. Prof. Dr. Boštjan Brumen: Visit within the project »Data Mining - Its Assessment and Security«, working visit, Pori, Finland, July 19–26, 2005.

Prof. Dr. Tatjana Welzer Družovec: Visit within the project »Integration of Data Mining Techniques into Intelligent Systems«, working visit, Thessaloniki, Greece, Sept. 17–21, 2005.

Aida Kamišalić: Visit within the the project »Integration of Data Mining Techniques into Intelligent Systems«, IN - 34 Database Technologies Laboratory

working visit, Thessaloniki, Greece, Sept. 20–25, 2005.

Marko Hölbl: Socrates-Erasmus teacher mobility, working visit, Pori, Finland, Sept. 22–29, 2005.

Asst. Prof. Dr. Boštjan Brumen: Visit of the delegation of the University of Maribor, working visit, Rovaniemi, Finland, Dec. 14–18, 2005.

GUESTS AND VISITORS

Bernard Delahousse, Socrates-Erasmus working visit, working visit, Feb. Henri Bocquet, 26 to Mar. 2, 2005. Jean-Luc Demouliez (IUT A de Lille, Lille, France):

Jean-Francoise Bonastre Socrates-Erasmus teaching mobility, working visit, (University of Avignon, Avignon, Apr. 2–8, 2005. France):

David Riano Socrates-Erasmus teaching mobility, working visit, (Rovira i Virgili University, Taragona, Apr. 2–8, 2005. Spain):

John Alexander Bohada Visit within the project »Knowledge generation and (Rovira i Virgili University, Taragona, exploitation in wholistic medical Treatments«, Spain): working visit, Apr. 6–15, 2005.

Alain Magnan Presentation of the COROT project, working visit, (Laboratory of Space Astrophysics, Apr. 18–22, 2005. Marseille, France):

Myrna Magnan Working meeting for the Valuertech II project, (IUT Marseille St Jerome, Universite working visit, Apr. 20, 2005. Aix Marseille III, Marseille, France):

Peter Lah Visit within the project "Perceiving And Enacting (St. Louis University, ZDA, St. Louis, Social And Political Identities In Slovenia and MO 63103, United States): United States – A view from globalization and European integration perspective", working visit, Database Technologies Laboratory IN - 35

May 17 to June 17, 2005.

Orlando Belo Visit within the project "Improving Information (University of Minho, Braga, Portugal): Quality in Data Warehousing Environments", working visit, Sept. 24–29, 2005.

Timo Mäkinen, Visit within the project »Data Mining - Its Timo Varkoi, Assessment and Security«, working visit, Nov. 2–8, Hannu Jaakkola 2005. (Tampere University of Technology, Pori, Finland):

Klaus Dieter Lectures for students and for ACM-Slovenija, (Massey University, Palmerston North, working visit Nov. 17–20, 2005. New Zealand):

DECORATIONS, AWARDS, AND HONOURS

Prof. Dr. Tatjana Welzer Družovec, Aida Kamišalić, Aleš Vrabič: Nomination for World Summit Award (sponsorship of UN) for the best e-content in category e-science (Slovenian selection/winner), Nov. 16, 2005.

IN - 36 Computer Mediated Communication Laboratory

COMPUTER MEDIATED COMMUNICATION LABORATORY

Head: Prof. Dr. Jozsef Györkös Phone: +386 2 235 51 25 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Basic research project

CRP-3311-03- Metodologija razvoja integriranih informacijskih rešitev v 828898 konvergenčnem okolju (Methodology for the development of integrated information solutions in a convergent environment) Leader: Prof. Dr. Ivan Rozman (Faculty of Electrical Engineering and Computer Science) Participants: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Vili Podgorelec; Aleš Živkovič, MSc; Boštjan Kežmah, MSc; Simon Beloglavec; Regina Polutnik, MSc; Boštjan Šumak; Maja Pušnik; Marko Tekavc; Miha Strehar; Boris Lahovnik Financed by: Ministry of the Information Society, Ministry of Education, Science and Sport of the Republic of Slovenia

The basic goal of the project is to introduce a unified methodology for the development of integrated information solutions in a convergent environment, which will consist of the methodological framework incorporating patterns, and the mechanisms for applying the methodology to real information systems according to several pilot implementations provided for particular approaches and methods. The following aspects will be covered: - Scientific: the design of a methodology for the development of integrated solutions representing a theoretical foundation within the form of the framework, which specifies a technology and platform-independent approach to information systems integration, and Computer Mediated Communication Laboratory IN - 37

covers both the development of new solutions, as well as the integration of existing applications. - Strategic: the application of solution patterns provides definitions of certain restrictions, and thereby ensures concordance of resulting solutions with accepted technological and semantic standards, as are the Single European Electronic Market standards (SEEM). - Practical: processes of methodology application to real information systems and pilot implementations offer organizations ways to quickly implement integration concepts, and to consequently gain practical value from projects without making too high investments. - Comparative: by defining the integrability index, it is possible to compare, using a unified, quantitative metric, the level of integration which is achieved by the information system of an organization and is expressed in the form of a multi-criteria vector.

International projects

GREAT-IST GREAT-IST: 6th Framework Programme (EU IST) Participants: Prof. Dr. Jozsef Györkös; Andrej Bregar, MSc; Boris Lahovnik GREAT-IST is a strategic project involving the target countries of Central and Eastern Europe, namely the Western Balkans, the Newly Independent States and the Associated Candidate Countries. GREAT-IST aims at fulfilling the strong need of "Great European East" to become a more integrated area in research and technology in Information Society Technology in particular with the European Union Countries. Each country shows different stages of IST uptake and research infrastructure. Therefore, the project aims at solving these priorities, by providing a wide co-operation platform open to several categories of stakeholders (science and research centres, universities and other relevant actors in IST and research community, governments, institutional levels, industrial associations and companies)

PUBLICATIONS

Andrej Bregar, “Extension of the aggregation/disaggregation principle to computer-guided convergent group decision-making processes,” Joint Workshop on Decision Support Systems, Experimental Economics & e-Participation, Graz, Austria, Jun. 2005, pp. 95-107.

Andrej Bregar, “Združitveno-razdružitveni pristop: nadgradnja strojnega učenja kot osnova konstruktivni specifikaciji kvantitativnih odločitvenih modelov,” Informatika kot temelj povezovanja: zbornik posvetovanja, DSI - Dnevi slovenske informatike 2005, Portorož, Slovenia, Apr. 2005, pp. 151-157. IN - 38 Computer Mediated Communication Laboratory

PRESENTATIONS BY THE LABORATORY MEMBERS

Goran Radman, Jože Gričar, József Györkös: “Current trends in the ICT markets in South Central Europe”, panel at Business expansion & funding opportunities workshop, Ljubljana, Slovenia, June 9, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Boris Lahovnik: Organising committee member, conference, Object technology in Slovenia, Maribor, Slovenia, June 15–16, 2005.

Boris Lahovnik: Organising committee member, conference, Information science and law, Maribor, Slovenia, June 16–16, 2006.

Prof. Dr. Jozsef Györkös: Programme committee member, conference, Development and re-engineering of Information Systems, Ljubljana, Slovenia, Oct. 10–14, 2005.

Prof. Dr. Jozsef Györkös: Vice-chairman, international conference, Information society 2005, Ljubljana, Slovenia, Oct. 10–17, 2005.

Prof. Dr. Jozsef Györkös: Programme committee member, conference, Education in Information Society, Ljubljana, Slovenia, Oct. 14, 2005.

Prof. Dr. Jozsef Györkös: Reviewer for Uporabna informatika.

Prof. Dr. Jozsef Györkös: 6th Framework Programme EU (IST - Information Socity Technologies) reviewer.

Real-Time Systems Laboratory IN - 39

REAL-TIME SYSTEMS LABORATORY

Head: Prof. Dr. Matjaž Colnarič Phone: +386 2 220 74 30 E-mail: [email protected]

RESEARCH PROJECTS

Current research projects

Research and development projects

3311-04-855022 CO ICT RR6 Center odličnosti Informacijske in komunikacijske tehnologije: Verifikacija pravilnosti delovanja komunikacijskih sistemov (CO ICT RR6 Centre of excellence Information and communication technologies: Correctness verification of communication system functioning) Leader: Prof. Dr. Zmago Brezočnik (Faculty of Electrical Engineering and Computer Science) Participants: Prof. Dr. Matjaž Colnarič; Filip Samo Balan, MSc; Dr. Robert Meolic; Assoc. Prof. Dr. Tatjana Kapus; Prof. Dr. Zmago Brezočnik; Aleksander Vreže; Dr. Boštjan Vlaovič Project partners: Iskratel Ltd., Inštitut Jožef Stefan, Institute for Economic Research Financed by: Iskratel Ltd., Ministry of Higher Education, Science and Technology of the Republic of Slovenia

The basic objective of this research and development project is to obtain new knowledge in the area of communication system verification and to transfer the existing knowledge in this area to the industry. The planned activities are divided into seven phases: analysis of the existing verification methods and tools, choice of formal verification examples, model generation, formal verification, supplementation of the tools and methods, analysis of the results and knowledge transfer. IN - 40 Real-Time Systems Laboratory

Z2-6398-0796 Uporaba evolucijskih modelov za zagotavljanje robustnosti vgrajenih sistemov (Application of evolutionary models to assure fault-tolerance in embedded systems) Leader: Prof. Dr. Ivan Rozman (Faculty of Electrical Engineering and Computer Science) Participants: Dr. Matej Šprogar Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

This year the analysis of existing techniques for fault-tolerance in embedded systems was completed. Several deficiencies in existing approaches were detected and isolated. According to project' goals the target platform was selected - a prototype of the Ifatis project with good testing and learning capabilities, capable of testing intelligent control modules in both software and hardware. Evolutionary learning was chosen as a learning concept, in particular genetic programming as the most generic form of all evolutionary methods. Next an object-oriented library for evolutionary computing was created, which makes porterage of the evolutionary FTC to other platforms easy. Currently the research is concentrated on how to combine genetic programming with the concepts of fault-tolerance. For this an appropriate programming interface was developed, which allows for relatively comfortable coding of the FTC operations in evolutionary computing. An open question is how to execute the learning module on the testing platform: either the platform autonomously learns by executing the learning module and takes immediate advantage of the new knowledge (the most powerful option, but also almost impossible to implement due to HW and SW limitations), or it executes an off-line FTC algorithm, which is unable to learn while on-line (a weaker option, but it can be implemented and tested more easily).

International projects

IST-2001-32122 IFATIS - Intelligent Fault Tolerant Control in Integrated Systems, WP4: Fault Tolerance in Computer Systems Leader: Prof. Dr. Matjaž Colnarič (Faculty of Electrical Engineering and Computer Science), Steven X Ding (University Duisburg - Essen, The Gerhard Mercator University) Participants: Dr. Roman Gumzej, Milan Čurkovič, Asst. Prof. Dr. Domen Verber, Stanislav Moraus, Dr. Matej Šprogar, Bojan Hadjar, Rok Ostrovršnik Project partners: University Duisburg - Essen, The Gerhard Mercator University, Centre de Recherche en Automatique de Nancy, Universite Henri Real-Time Systems Laboratory IN - 41

Poincare Nancy 1, Université Libre de Bruxelles, Department of Electronics, Computer Science and Systems, University of Bologna, Universita degli Studi di Roma "La Sapienza", Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E.V., Yorkshire Water Services Limited, TNI, Robert Bosch Gmbh Financed by: European Union

One of the major goals of this project is to establish a framework of intelligent fault tolerant control (FTC) technology, which will provide control engineers and scientists with advanced methods to approach FTC problems in complex control systems in a systematic way. It will build a basis for the future development of user-specified FTC tools and systems in all kinds of industrial sectors. The second goal of the project is the development of a novel methodology and a software tool (IFATIS tool) for the integrated design of the real time, multilevel FTC systems. The IFATIS tool will be platform independent and constructed in two levels. The final goal for practical prototype implementation is the customisation of the achieved results to automotive systems, to a water treatment process and to the construction of an FTC platform for robotic systems.

PUBLICATIONS

Roman Gumzej, “Elektronski arhivi in priročne mobilne računalniške naprave: dostop do elektronskih arhivov z dlančnikov,” Organ. znanja (Tisk. izd.), Vol. 10, No. 1, pp. 29-31, 2005.

Matej Šprogar, Miha Šprogar, Matjaž Colnarič, “Autonomous evolutionary algorithm in medical data analysis,” Comput. methods programs biomed., Vol. 80, Suppl. 1, pp. S29-S38, 2005.

Matjaž Colnarič, “IFATIS platform: a fault tolerant embedded control system,” MIPRO 2005: 28. međunarodni skup, Opatija, Croatia, Jun. 2005, pp. 68-73.

Matjaž Colnarič, Domen Verber, “Data access in distributed control systems,” Preprints of the 16th IFAC World Congress, Praga, Češka, Jul. 2005.

Roman Gumzej, Shourong Lu, Wolfgang A. Halang, “Dynamic (Re-) configuration expressed in RT-UML,” MIPRO 2005: 28. međunarodni skup, Opatija, Croatia, Jun. 2005, pp. 179-184.

Roman Gumzej, Shourong Lu, Wolfgang A. Halang, “MDA profile for configuration management in embaded distributed systems,” Proceedings, The 3rd International Conference on Computer, Communication and Control Technologies, CCCT'05, Austin, Texas, USA, Jul. 2005, pp. 299-304. IN - 42 Real-Time Systems Laboratory

Shourong Lu, Wolfgang A. Halang, Heinz W. Schmidt, Roman Gumzej, “A component-based approach to specify hazards in the design of safety-critical systems,” Frontier technologies for the future of industry and business, 3rd International conference on industrial informatics INDIN2005, Perth, Western Australia, aug. 2005.

Matej Šprogar, “Excluding fitness helps improve robustness of evolutionary algorithms,” Knowledge-based intelligent information and engineering systems: 9th international conference, KES 2005, Melbourne, Australia, Sep. 2005, pp. 8-14.

CONGRESSES, MEETINGS, AND COMMITTEES

Prof. Dr. Matjaž Colnarič: Programme committee member, conference, Object technology in Slovenia, Maribor, Slovenia, June 15–16, 2005.

Prof. Dr. Matjaž Colnarič: Reviewer for Journal of Computing and Information Technology, editor.

Prof. Dr. Matjaž Colnarič: Reviewer for Real-Time Systems, The International Journal of Time-Critical Computing Systems, associate editor.

Prof. Dr. Matjaž Colnarič: Reviewer for ATP International, Automation Technology in Practice, associate editor.

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Matjaž Colnarič, Presentation of the IFATIS project, scientific Bojan Hadjar, collaboration, Ljubljana, Slovenia, Feb. 14, 2005. Stanislav Moraus, Rok Ostrovršnik:

Prof. Dr. Matjaž Colnarič, Final presentation and assesment of the IFATIS Bojan Hadjar, project, project meeting participation, Stuttgart, Stanislav Moraus, Germany, Mar. 21–23, 2005. Rok Ostrovršnik, Asst. Prof. Dr. Domen Verber:

Dr. Roman Gumzej, IFAC summer school, seminar participation, Praha Bojan Hadjar, 2, Czech Republic, June 27 to July 1, 2005. Real-Time Systems Laboratory IN - 43

Dr. Matej Šprogar, Asst. Prof. Dr. Domen Verber:

GUESTS AND VISITORS

Christian Madritsch Invited lecture for the Real-time systems course, (Fachhochschule technikum Kärnten scientific collaboration, Jan. 20, 2005. FH, Spittal, Austria):

Nenad Markovič Assesment of computer contents in Croatian (Ministry of Science and Technologyt of curricula, visit, Apr. 20, 2005. the Republic of Croatia, Zagreb, Croatia):

Wolfgang A. Halang Working visit, visit, May 28 to June 2, 2005. (Fernuniversitaet Hagen, Hagen, Germany):

Institute of Media Communications MC – 1

INSTITUTE OF MEDIA COMMUNICATIONS

Head: Prof. Dr. Tatjana Welzer Družovec Phone: +386 2 235 51 30 E-mail: [email protected] URL: http://www.in.feri.uni-mb.si

University undergraduate Media Communication Studies is a multidisciplinary study programme that integrates knowledge from the areas of radio- and TV-production, information systems, graphical communication and telecommunication. The multidisciplinary programme provides students with all the technological and organizational knowledge they need for their professional work and further professional and academic development. Having in mind the development of press- and electronic-media in the future, the university level of studies in Media Communication provides the foundation not only for performing work in radio, TV and production houses, but prepares students for a career in marketing companies, in interactive media publishing companies, in Internet-service providers, in industry, especially in developing company marketing material and selling products or services on the Internet. In the first years of studies emphasis is given to the theoretical part, while the practical work is carried out in the final years. The programme is, in part, carried out in media houses and similar environments to gain experience with specific working areas. The programme has been developed carefully, taking into account the development in disciplines, covered by the programme, considering the specifics of Slovenia and the regions. The curriculum is harmonized with similar programmes from all over the world. The knowledge, gained through leading and carrying out various projects by the institutes members in the above mentioned areas, is, therefore, directly incorporated into the educational process. MC – 2 Institute of Media Communications

Employees: Asst. Prof. Dr. Marjan Družovec; Asst. Prof. Dr.Melita Zajec; Dr. Szuana Žilič - Fišer; Dr. Marko Ivanišin, Mag. Tina Tomažič, Katja Udir - Mišič, BSc

RESEARCH PROJECTS

Current research projects

Industrial projects

EIM Spletne strani EIM (EIM web pages) Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Zoran Kancler, Dr. Marko Ivanišin, Dr. Izidor Golob, Katja Udir-Mišič Project partners: Economic Insttitute Maribor Ltd. Financed by: Economic Insttitute Maribor Ltd.

Project includes analysis of customer requests, the preparation of a proposed solution, the realization of the chosen solution and user training. Part of the activities is done, upgrade is in preparation.

International projects

NATO Former Yugoslavia/Slovenia: The Role Of The Mass Media In The Peace-Building Process Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science) Participants: Andrew Calabrese, Zala Volčič Project partners: NATO Public Diplomacy Division Financed by: NATO Public Diplomacy Division

This project is concerned with contemporary information and communication technologies’ transformations in the former Yugoslav countries. The specific focus is on media, culture and communication, in terms of both security and policy activities. The central hypothesis is that new media developments - information and communication technologies - are creating a new Institute of Media Communications MC – 3

transnational cultural order that is of specific importance in the countries of the former Yugoslavia after the end of wars and changes. However, political, economic and cultural rebuilding can take place only in an environment where civil relationships are subjected to a democratization process. But first, one has to create a space where information and communication technologies are contributing constructively to the rebuilding of society. The project investigates the human, national and regional dimensions of post-conflict peace- building challenges; civil relations in war-torn societies; democratization processes and the role of the media; and the role of local and external actors in meeting the challenge of sustainable post-conflict security sector reform. First results already confirm some hypotheses.

PUBLICATIONS

Boštjan Brumen, Tatjana Welzer-Družovec, Marjan Družovec, Izidor Golob, Hannu Jaakkola, Ivan Rozman, Jiři Kubalík, “Protecting medical data for decision-making analyses,” J. med. syst., Vol. 29, No. 1, pp. 65-80, Feb. 2005.

Marjan Družovec, Tatjana Welzer-Družovec, Boštjan Brumen, “Agent oriented approach to handling medical data,” J. med. syst., Vol. 29, No. 1, pp. 45-57, Feb. 2005.

Tatjana Welzer-Družovec, Boštjan Brumen, Izidor Golob, José Luis Sánchez, Marjan Družovec, “Diagnostic process from the data quality point of view,” J. med. syst., Vol. 29, No. 1, pp. 59-63, Feb. 2005.

Rok Lampe, “"Von Hannover proti Nemčiji": primer medijskega prava par excellence,” Dialogi (Maribor), Vol. 41, 5/6, pp. 52-63, 2005.

Marko Ivanišin, “Technological development for society's needs,” IDIMT-2005: proceedings (Schriftenreihe Informatik, Bd. 16), pp. 295-301.

Tatjana Welzer-Družovec, Marjan Družovec, Izidor Golob, Aida Kamišalić, “Internationalization as a part of the database development,” Proceedings, IEEE 3rd International conference on computational cybernetics, Mauritius, Apr. 2005, pp. 145-147.

Tatjana Welzer-Družovec, Marjan Družovec, Katja Udir Mišič, Marko Hölbl, “Media communication study an integration of technical and sociological studies,” New horizons in industry, business and education: proceedings of the Forth International Conference, Corfu, Greece, aug. 2005, pp. 90-95.

Rok Lampe, “Legal aspects of determination of life on request,” Bioetika i palijativna medicina: potrebe i mogućnosti grada Rijeke i PGŽ za osnivanjem hospicija: sažeci: needs and MC – 4 Institute of Media Communications

possibilities of the town of Rijeka and Primorsko-goranska county for the foundation of hospice: paper abstracts, pp. 13-14.

Rok Lampe, “Mednarodni, evropski in nacionalni pravni vidiki kulturnih pravic,” Glas. ZRS Koper, Vol. 10, No. 4, pp. 119-121, 2005.

Rok Lampe, “The protection of personality rights against invasions by mass media in Slovenia,” Persönlichkeitsschutz gegenüber Massenmedien (Tort and insurance law, Vol. 13), pp. 243-259.

Rok Lampe, “Slovenia. XXI.,” European tort law 2004 (Tort and insurance law yearbook), pp. 522-537.

Melita Zajc, Digitalne podobe: vidnost, vednost in digitalni mediji.: Ljubljana, Institutum Studiorum Humanitatis - Fakulteta za podiplomski humanistični študij, Slovenia, 2005.

Rok Lampe, Evropsko pravo človekovih pravic: učno gradivo za udeležence seminarja, Ljubljana, Ministrstvo za notranje zadeve, Direktorat za javno upravo, Upravna akademija.

Rok Lampe, Inšpekcijski nadzor in ekologija: priročnik za udeležence seminarja, Ljubljana, Ministrstvo za notranje zadeve, Direktorat za javno upravo, Upravna akademija.

PRESENTATIONS BY THE LABORATORY MEMBERS

Marjan Družovec: “Modern Communication - technological support”, Socrates/Erasmus teaching mobility at the IUT Marseille, Université Paul Cézanne, Aix-Marseille III, Marseille, France, (8 hours lectures),from June 27 to June 30, 2005.

Melita Zajc: “New material culture of remembering,” conference Kaj storiti z AV arhivi, Ljubljana, Slovenia, Jan. 28, 2005.

Melita Zajc: “project HEROJ,” lecture, Ljubljana, Slovenia, Feb. 1, 2005.

Melita Zajc: “International symposium through International festival digital art Pixxelpoint,” lecture I-reversible, Nova Gorica, Slovenia, Dec. 14, 2005.

CONGRESSES, MEETINGS, AND COMMITTEES

Dr. Melita Zajc: Programme committee member, expert consultation, World Summit Award for the best e- Institute of Media Communications MC – 5

contents with sponsorship of UN, Ljubljana, Slovenia, Jan. 1 to Aug. 1, 2005.

Asst. Prof. Dr. Marjan Družovec: Programme committee member, conference, 9th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida, United States, July 10–13, 2005.

Asst. Prof. Dr. Marjan Družovec: Programme committee member, conference, 5th IBIMA International Conference on Internet & Information Technology in Modern Organizations, Cairo, Egypt, Dec. 13–15, 2005.

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Tatjana Welzer Družovec, Presentation of study program, working visit, City Asst. Prof. Dr. Marjan Družovec: University London, London, United Kingdom, Jan. 20–26, 2005.

Asst. Prof. Dr. Marjan Družovec, Presentation of study program, working visit, Prof. Dr. Tatjana Welzer Družovec: Zagreb, Croatia, Mar. 24, 2005.

Asst. Prof. Dr. Marjan Družovec, Socrates-Erasmus teacher mobility, working visit, Prof. Dr. Tatjana Welzer Družovec: Marseille, France, June 26–28, 2005.

GUESTS AND VISITORS

Bernard Delahousse, Socrates-Erasmus working visit, working visit,, Feb. Henri Bocquet, 26 to Mar. 2, 2005. Jean-Luc Demouliez (IUT A de Lille, Lille, France):

Alain Magnan Presentation of the COROT project, working visit, (Laboratory of Space Astrophysics, Apr. 18–22, 2005. Marseille, France):

Myrna Magnan Socrates-Erasmus teacher mobility, working visit, (IUT Marseille St Jerome, Universite Apr. 18–22, 2005. Aix Marseille III, Marseille, France): MC – 6 Institute of Media Communications

Peter Lah Lectures for the Study programm Media (St. Louis University, ZDA, St. Louis, Communications and work on the bilateral project, MO 63103, United States): working visit, May 17 to June 17, 2005.

Veysel Silindir, Socrates-Erasmus teacher mobility, working visit, Irfan Karagoc, May 23 to June 5, 2005. Nursel Akcam, Cengiz M. Taplamacioglu (Gazi University Ankara, Ankara, Turkey):

Andrew Calabrese Closing lectures for the students of Media (University of Colorado Boulder, Comunications, working visit, June 12 to July 2, Boulder, United States): 2005.

DECORATIONS, AWARDS, AND HONOURS

Franja Pižmoht: Recognition of the Ministry of Higher Education, Science and Technology for achievement at the international festival Memfest, Oct. 10, 2005.

Franja Pižmoht: 1st prize at the international festival Memfest for the communication field, June 24, 2005.

Franja Pižmoht: Recognition at FERI day for achievement at the international festival Memfest, Dec. 8, 2005.

Katja Udir: Nomination for World Summit Award (sponsorship of UN) for the best e-content in category e-science (Slovenian selection/winner), Nov. 16, 2005

Institute of Telecommunications TC – 1

INSTITUTE OF TELECOMMUNICATIONS

Head: Prof. Dr. Bogomir Horvat Phone: +386 2 220 72 00 E-mail: [email protected] URL: http://www.elektronika.uni-mb.si

The Faculty of Electrical Engineering and Computer Science, University of Maribor, started the academic-degree study programme in Telecommunications in the academic year 2001/2002. The programme has been prepared within the Institute of Electronics. In order to ensure a teaching and research base for this new academic-degree programme and the existing study option of Telecommunications within the professional higher education programme in Electrical Engineering, we set up the Institute of Telecommunications. It is still in the formation phase. The research and development work in the field of telecommunications has been carried out by many members already in the framework of the Institute of Electronics, from where the majority of teachers come for the new programme. In 2005, they were active in the development of concurrent telecommunication services and protocol stacks and in the transfer of these results to the next generation networks in the Slovene telecommunication industry. These activities are described in the section, presented by the Institute of Electronics.