Cyril Höschl, CV
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Army Acquisition Workforce Dependency on E-Mail for Formal
ARMY ACQUISITION WORKFORCE DEPENDENCY ON E-MAIL FOR FORMAL WORK COORDINATION: FINDINGS AND OPPORTUNITIES FOR WORKFORCE PERFORMANCE IMPROVEMENT THROUGH E-MAIL-BASED SOCIAL NETWORK ANALYSIS KENNETH A. LORENTZEN May 2013 PUBLISHED BY THE DEFENSE ACQUISITION UNIVERSITY PRESS PROJECT ADVISOR: BOB SKERTIC CAPITAL AND NORTHEAST REGION, DAU THE SENIOR SERVICE COLLEGE FELLOWSHIP PROGRAM ABERDEEN PROVING GROUND, MD PAGE LEFT BLANK INTENTIONALLY .ARMY ACQUISITION WORKFORCE DEPENDENCY ON E-MAIL FOR FORMAL WORK COORDINATION: FINDINGS AND OPPORTUNITIES FOR WORKFORCE PERFORMANCE IMPROVEMENT THROUGH E-MAIL-BASED SOCIAL NETWORK ANALYSIS KENNETH A. LORENTZEN May 2013 PUBLISHED BY THE DEFENSE ACQUISITION UNIVERSITY PRESS PROJECT ADVISOR: BOB SKERTIC CAPITAL AND NORTHEAST REGION, DAU THE SENIOR SERVICE COLLEGE FELLOWSHIP PROGRAM ABERDEEN PROVING GROUND, MD PAGE LEFT BLANK INTENTIONALLY ii Table of Contents Table of Contents ............................................................................................................................ ii List of Figures ................................................................................................................................ vi Abstract ......................................................................................................................................... vii Chapter 1—Introduction ................................................................................................................. 1 Background and Motivation ................................................................................................. -
Techniques for Visualization and Interaction in Software Architecture Optimization
Institute of Software Technology Reliable Software Systems University of Stuttgart Universitätsstraße 38 D–70569 Stuttgart Masterarbeit Techniques for Visualization and Interaction in Software Architecture Optimization Sebastian Frank Course of Study: Softwaretechnik Examiner: Dr.-Ing. André van Hoorn Supervisor: Dr.-Ing. André van Hoorn Dr. J. Andrés Díaz-Pace, UNICEN, ARG Dr. Santiago Vidal, UNICEN, ARG Commenced: March 25, 2019 Completed: September 25, 2019 CR-Classification: D.2.11, H.5.2, H.1.2 Abstract Software architecture optimization aims at improving the architecture of software systems with regard to a set of quality attributes, e.g., performance, reliability, and modifiability. However, particular tasks in the optimization process are hard to automate. For this reason, architects have to participate in the optimization process, e.g., by making trade-offs and selecting acceptable architectural proposals. The existing software architecture optimization approaches only offer limited support in assisting architects in the necessary tasks by visualizing the architectural proposals. In the best case, these approaches provide very basic visualizations, but often results are only delivered in textual form, which does not allow for an efficient assessment by humans. Hence, this work investigates strategies and techniques to assist architects in specific use cases of software architecture optimization through visualization and interaction. Based on this, an approach to assist architects in these use cases is proposed. A prototype of the proposed approach has been implemented. Domain experts solved tasks based on two case studies. The results show that the approach can assist architects in some of the typical use cases of the domain. Con- ducted time measurements indicate that several hundred architectural proposals can be handled. -
Multi-Touch Table User Interfaces for Co-Located Collaborative Software Visualization
Multi-touch Table User Interfaces for Co-located Collaborative Software Visualization Craig Anslow School of Engineering and Computer Science Victoria University of Wellington, New Zealand [email protected] ABSTRACT Integrated Development Environments (IDE) like Eclipse, Most software visualization systems and tools are designed and the web. These design decisions do not allow users in from a single-user perspective and are bound to the desktop, a co-located environment (within the same room) to easily IDEs, and the web. Few tools are designed with sufficient collaborate, communicate, or be aware of each others activi- support for the social aspects of understanding software such ties to analyse software [19]. Multi-touch user interfaces are as collaboration, communication, and awareness. This re- an interactive technique that allows single or multiple users search aims at supporting co-located collaborative software to collaboratively control graphical displays with more than analysis using software visualization techniques and multi- one finger, mouse pointer, or tangible object on various kinds touch tables. The research will be conducted via qualitative of surfaces and devices. user experiments which will inform the design of collabora- tive software visualization applications and further our un- The goal of this research is to investigate whether multi- derstanding of how software developers work together with touch interaction techniques are more effective for co-located multi-touch user interfaces. collaborative software visualization than existing single user desktop interaction techniques. The research will be con- ACM Classification: H1.2 [User/Machine Systems]: Hu- ducted by user experiments to observe how users interact man Factors; H5.2 [Information interfaces and presentation]: and collaborate with a multi-touch software visualization ap- User Interfaces. -
A Systematic Literature Review of Software Visualization Evaluation T ⁎ L
The Journal of Systems & Software 144 (2018) 165–180 Contents lists available at ScienceDirect The Journal of Systems & Software journal homepage: www.elsevier.com/locate/jss A systematic literature review of software visualization evaluation T ⁎ L. Merino ,a, M. Ghafaria, C. Anslowb, O. Nierstrasza a Software Composition Group, University of Bern, Switzerland b School of Engineering and Computer Science, Victoria University of Wellington, New Zealand ARTICLE INFO ABSTRACT Keywords: Context:Software visualizations can help developers to analyze multiple aspects of complex software systems, but Software visualisation their effectiveness is often uncertain due to the lack of evaluation guidelines. Evaluation Objective: We identify common problems in the evaluation of software visualizations with the goal of for- Literature review mulating guidelines to improve future evaluations. Method:We review the complete literature body of 387 full papers published in the SOFTVIS/VISSOFT con- ferences, and study 181 of those from which we could extract evaluation strategies, data collection methods, and other aspects of the evaluation. Results:Of the proposed software visualization approaches, 62% lack a strong evaluation. We argue that an effective software visualization should not only boost time and correctness but also recollection, usability, en- gagement, and other emotions. Conclusion:We call on researchers proposing new software visualizations to provide evidence of their effec- tiveness by conducting thorough (i) case studies for approaches that must be studied in situ, and when variables can be controlled, (ii) experiments with randomly selected participants of the target audience and real-world open source software systems to promote reproducibility and replicability. We present guidelines to increase the evidence of the effectiveness of software visualization approaches, thus improving their adoption rate. -
The Vessel Schedule Recovery Problem Disruption Management in Liner Shipping
Downloaded from orbit.dtu.dk on: Oct 05, 2021 The Vessel Schedule Recovery Problem Disruption management in liner shipping Brouer, Berit Dangaard; Plum, Christian Edinger Munk; Vaaben, Bo; Pisinger, David; Dirksen, Jakob Publication date: 2012 Link back to DTU Orbit Citation (APA): Brouer, B. D., Plum, C. E. M., Vaaben, B., Pisinger, D., & Dirksen, J. (2012). The Vessel Schedule Recovery Problem: Disruption management in liner shipping. Abstract from 25th European Conference on Operations Research, Vilnius, Lithuania. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. TECHNICAL SESSIONS model and give an algorithm for scheduling multilayer divisible com- Monday, 8:30-10:00 putations. The algorithm is tested experimentally. Structures of the obtained schedules and performance of such applications are studied. MA-01 2 - Scheduling malleable tasks with arbitrary processing Monday, 8:30-10:00 speed functions RB-Alfa Maciej Machowiak, Poznan University of Technology, Poland, [email protected], Mikhail Y. -
Visualization of the Static Aspects of Software: a Survey Pierre Caserta, Olivier Zendra
Visualization of the Static aspects of Software: a survey Pierre Caserta, Olivier Zendra To cite this version: Pierre Caserta, Olivier Zendra. Visualization of the Static aspects of Software: a survey. IEEE Trans- actions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2011, 17 (7), pp.913-933. 10.1109/TVCG.2010.110. inria-00546158v2 HAL Id: inria-00546158 https://hal.inria.fr/inria-00546158v2 Submitted on 28 Oct 2011 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS, VOL. 17, NO. 7, JULY 2011 913 Visualization of the Static Aspects of Software: A Survey Pierre Caserta and Olivier Zendra Abstract—Software is usually complex and always intangible. In practice, the development and maintenance processes are time- consuming activities mainly because software complexity is difficult to manage. Graphical visualization of software has the potential to result in a better and faster understanding of its design and functionality, thus saving time and providing valuable information to improve its quality. However, visualizing software is not an easy task because of the huge amount of information comprised in the software. -
Evocells - a Treemap Layout Algorithm for Evolving Tree Data
Initial State EvoCells - A Treemap Layout Algorithm for Evolving Tree Data Willy Scheibel, Christopher Weyand and Jurgen¨ Dollner¨ NextHasso State Plattner Institute Faculty of Digital Engineering, University of Potsdam, Potsdam, Germany Initial | State Keywords: Treemap Layout Algorithm, Time-varying Tree-structured Data, Treemap Layout Metrics. Abstract: We propose the rectangular treemap layout algorithm EvoCells that maps changes in tree-structured data onto an initial treemap layout. Changes in topology and node weights are mapped to insertion, removal, growth, and shrinkage of the layout rectangles. Thereby, rectangles displace their neighbors and stretche their enclosing rectangles with a run-time complexity of O(nlogn). An evaluation using layout stability metrics on the open source ElasticSearch software system suggests EvoCells as a valid alternative for stable treemap layouting. 1 INTRODUCTION regard to algorithmic complexity and layout stability, together with a case-study in the domain of software Tree-structured data is subject to constant change. analytics based on the software system ElasticSearch. In order to manage change, understanding the evo- lution is important. An often used tool to commu- Initial State nicate structure and characteristics of tree-structured data is the treemap (Shneiderman, 1992). Most lay- outs are based on a recursive partition of a given ini- tial 2D rectangular area proportional to the summed weights of the nodes. Besides topology and associ- ated weights, additional visual variables can be used (Carpendale, 2003), including extrusion of the 2D layout to 3D cuboids. The restricted use of the third dimension is reflected by the term 2.5D treemaps (Limberger et al., 2017b). When used over time, treemap layouts are faced Next State by their inherent instability regarding even minor changes to the nodes’ weights used for the spatial layouting, impeding the creation and use of a mental map (Misue et al., 1995). -
Storytelling and Visualization: a Survey
Storytelling and Visualization: A Survey Chao Tong1, Richard Roberts1, Robert S.Laramee1,Kodzo Wegba2, Aidong Lu2, Yun Wang3, Huamin Qu3, Qiong Luo3 and Xiaojuan Ma3 1Visual and Interactive Computing Group, Swansea University 2Department of Computer Science, University of North Carolina at Charlotte 3Department of Computer Science and Engineering, Hong Kong University of Science and Technology Keywords: Storytelling, Narrative, Information visualization, Scientific visualization Abstract: Throughout history, storytelling has been an effective way of conveying information and knowledge. In the field of visualization, storytelling is rapidly gaining momentum and evolving cutting-edge techniques that enhance understanding. Many communities have commented on the importance of storytelling in data visual- ization. Storytellers tend to be integrating complex visualizations into their narratives in growing numbers. In this paper, we present a survey of storytelling literature in visualization and present an overview of the com- mon and important elements in storytelling visualization. We also describe the challenges in this field as well as a novel classification of the literature on storytelling in visualization. Our classification scheme highlights the open and unsolved problems in this field as well as the more mature storytelling sub-fields. The benefits offer a concise overview and a starting point into this rapidly evolving research trend and provide a deeper understanding of this topic. 1 MOTIVATION cation of the literature on storytelling in visualiza- tion. Our classification highlights both mature and “We believe in the power of science, exploration, unsolved problems in this area. The benefit is a con- and storytelling to change the world” - Susan Gold- cise overview and valuable starting point into this berg, Editor in Chief of National Geographic Maga- rapidly growing and evolving research trend. -
Analyzing Feature Implementation by Visual Exploration of Architecturally
Analyzing Feature Implementation by Visual Exploration of Architecturally-Embedded Call-Graphs Johannes Bohnet Jürgen Döllner University of Potsdam University of Potsdam Hasso-Plattner-Institute Hasso-Plattner-Institute Prof.-Dr.-Helmert-Str. 2-3 Prof.-Dr.-Helmert-Str. 2-3 14482 Potsdam, Germany 14482 Potsdam, Germany [email protected] [email protected] ABSTRACT 1. INTRODUCTION Maintenance, reengineering, and refactoring of large and complex As stated in [32] “year after year the lion's share of effort goes software systems are commonly based on modifications and into modifying and extending preexisting systems, about which enhancements related to features. Before developers can modify we know very little”. Requests for software changes are often feature functionality they have to locate the relevant code expressed by end users in terms of features, i.e. an observable components and understand the components’ interaction. In this behavior that is triggered by user interaction. Requesting feature paper, we present a prototype tool for analyzing feature changes concerns bug fixes or enhancements of feature functiona- implementation of large C/C++ software systems by visual lity and is a key concept for maintaining, reengineering, and exploration of dynamically extracted call relations between code refactoring large and complex software systems. To implement components. The component interaction can be analyzed on these new requirements, software developers have to translate the various abstraction levels ranging from function interaction up to feature change requests to changes in code components and their interaction of the system with shared libraries of the operating interaction behavior. The term component is used here in a more system. -
A Dynamic Multidimensional Visualization Method for Social Networks
PsychNology Journal, 2008 Volume 6, Number 3, 291 – 320 SIM: A dynamic multidimensional visualization method for social networks Maria Chiara Caschera*¨, Fernando Ferri¨ and Patrizia Grifoni¨ ¨CNR-IRPPS, National Research Council, Institute of Research on Population and Social Policies, Rome (Italy) ABSTRACT Visualization plays an important role in social networks analysis to explore and investigate individual and groups behaviours. Therefore, different approaches have been proposed for managing networks patterns and structures according to the visualization purposes. This paper presents a method of social networks visualization devoted not only to analyse individual and group social networking but also aimed to stimulate the second-one. This method provides (using a hybrid visualization approach) both an egocentric as well as a global point of view. Indeed, it is devoted to explore the social network structure, to analyse social aggregations and/or individuals and their evolution. Moreover, it considers and integrates features such as real-time social network elements locations in local areas. Multidimensionality consists of social phenomena, their evolution during the time, their individual characterization, the elements social position, and their spatial location. The proposed method was evaluated using the Social Interaction Map (SIM) software module in the scenario of planning and managing a scientific seminars cycle. This method enables the analysis of the topics evolution and the participants’ scientific interests changes using a temporal layers sequence for topics. This knowledge provides information for planning next conference and events, to extend and modify main topics and to analyse research interests trends. Keywords: Social network visualization, Spatial representation of social information, Map based visualization. -
Visual Techniques for Exploring Databases Overview
Visual Techniques for Exploring Databases Daniel A. Keim Institute for Computer Science, University of Halle-Wittenberg Overview 1. Introduction .........................................................................2 2. Data Preprocessing Techniques ...........................................9 3. Visual Data Exploration Techniques .................................11 • Geometric Techniques ..............................................................11 • Icon-based Techniques ..............................................................21 • Pixel-Oriented Techniques ........................................................31 • Hierarchical Techniques ...........................................................51 • Graph-based Techniques ...........................................................60 • Hybrid Techniques.....................................................................72 4. Distortion Techniques .......................................................73 5. Dynamic / Interaction Techniques .....................................81 6. Comparison of the Techniques ..........................................96 7. Database Exploration and Visualization Systems .............98 8. Summary and Conclusion ...............................................103 Daniel A. Keim Page T6 - 1 Visual Techniques for Exploring Databases Introduction Goals of Visualization Techniques ❑ Explorative Analysis • starting point: data without hypotheses about the data • process: interactive, usually undirected search for structures, trends, etc. • result: -
Informacijska Družba Information Society
Zbornik 22. mednarodne multikonference IS INFORMACIJSKA DRUŽBA Zvezek E 20 Proceedings of the 22nd International Multiconference INFORMATION SOCIETY 19 Volume E Kognitonika International Conference on Cognitonics Uredila / Edited by Vladimir A. Fomichov, Olga S. Fomichova http://is.ijs.si 7.–8. oktober 2019 / 7–8 October 2019 Ljubljana, Slovenia Zbornik 22. mednarodne multikonference INFORMACIJSKA DRUŽBA – IS 2019 Zvezek E Proceedings of the 22nd International Multiconference INFORMATION SOCIETY – IS 2019 Volume E Kognitonika International Conference on Cognitonics Uredila / Edited by Vladimir A. Fomichov, Olga S. Fomichova http://is.ijs.si 7.-8. oktober 2019 / 7-8 October 2019 Ljubljana, Slovenia Urednika: Vladimir A. Fomichov Department of Intelligent Monitoring Systems, Institute No. 3 Control Systems, Informatics and Electric Power Industry, Moscow Aviation Institute (National Research University), Orshanskaya street 3, 121552 Moscow, Russia Olga S. Fomichova Centre of Social Competences "Dialogue of Sciences", State Budget Professional Educational Institution “Sparrow Hills”, Universitetsky prospect 5, 119296 Moscow, Russia Založnik: Institut »Jožef Stefan«, Ljubljana Priprava zbornika: Mitja Lasič, Vesna Lasič, Lana Zemljak Oblikovanje naslovnice: Vesna Lasič Na naslovnici je uporabljena slika robota podjetja Dostop do e-publikacije: http://library.ijs.si/Stacks/Proceedings/InformationSociety Ljubljana, oktober 2019 Informacijska družba ISSN 2630-371X Kataložni zapis o publikaciji (CIP) pripravili v Narodni in univerzitetni knjižnici v Ljubljani COBISS.SI-ID=302466048 ISBN 978-961-264-163-4 (epub) ISBN 978-961-264-164-1 (pdf) PREDGOVOR MULTIKONFERENCI INFORMACIJSKA DRUŽBA 2019 Multikonferenca Informaci družba (http://is.ijs.si) je z dvaindvajseto zaporedno prireditvijo tradicionalni osrednji srednjeevropski dogodek na področju informacijske družbe, računalništva in informatike. Informacijska družba, znanje in umetna inteligenca so - in to čedalje bolj – nosilci razvoja človeške civilizacije.