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Sistemi Operativi Real-Time Marco Cesati Lezione R13 Sistemi Operativi Real-Time – II Schema Della Lezione
Sistemi operativi real-time Marco Cesati Lezione R13 Sistemi operativi real-time – II Schema della lezione Caratteristiche comuni VxWorks LynxOS Sistemi embedded e real-time QNX eCos Windows Linux come RTOS 15 gennaio 2013 Marco Cesati Dipartimento di Ingegneria Civile e Ingegneria Informatica Università degli Studi di Roma Tor Vergata SERT’13 R13.1 Sistemi operativi Di cosa parliamo in questa lezione? real-time Marco Cesati In questa lezione descriviamo brevemente alcuni dei più diffusi sistemi operativi real-time Schema della lezione Caratteristiche comuni VxWorks LynxOS 1 Caratteristiche comuni degli RTOS QNX 2 VxWorks eCos 3 LynxOS Windows Linux come RTOS 4 QNX Neutrino 5 eCos 6 Windows Embedded CE 7 Linux come RTOS SERT’13 R13.2 Sistemi operativi Caratteristiche comuni dei principali RTOS real-time Marco Cesati Corrispondenza agli standard: generalmente le API sono proprietarie, ma gli RTOS offrono anche compatibilità (compliancy) o conformità (conformancy) allo standard Real-Time POSIX Modularità e Scalabilità: il kernel ha una dimensione Schema della lezione Caratteristiche comuni (footprint) ridotta e le sue funzionalità sono configurabili VxWorks Dimensione del codice: spesso basati su microkernel LynxOS QNX Velocità e Efficienza: basso overhead per cambi di eCos contesto, latenza delle interruzioni e primitive di Windows sincronizzazione Linux come RTOS Porzioni di codice non interrompibile: generalmente molto corte e di durata predicibile Gestione delle interruzioni “separata”: interrupt handler corto e predicibile, ISR lunga -
POLITECNICO DI MILANO DEPARTMENT of CIVIL and ENVIRONMENTAL ENGINEERING – Environmental Section
POLITECNICO DI MILANO DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING – Environmental Section AWARE – Assessment on Waste and Resources – Research group LITERATURE REVIEW ON THE ASSESSMENT OF THE CARBONATION POTENTIAL OF LIME IN DIFFERENT MARKETS AND BEYOND Customer: EuLA – the European Lime Association Authors: Prof. Mario Grosso (Principal Investigator) Eng. Laura Biganzoli, Francesco Pietro Campo, Sara Pantini, Camilla Tua July 2020 Report n. 845.0202.70.02 To refer to this report, please use the following reference: Grosso M., Biganzoli L., Campo F. P., Pantini S., Tua C. 2020. Literature review on the assessment of the carbonation potential of lime in different markets and beyond. Report prepared by Assessment on Waste and Resources (AWARE) Research Group at Politecnico di Milano (PoliMI), for the European Lime Association (EuLA). Pp. 333. CHAPTER AUTHORS 1 EXECUTIVE SUMMARY F. P. Campo, C. Tua, M. Grosso 2 METHODOLOGY AND SCOPE OF THE WORK F. P. Campo, M. Grosso 3 INTRODUCTION: LIME USE AND APPLICATIONS F. P. Campo, M. Grosso 3.1 USE OF LIME IN IRON AND STEEL INDUSTRY L. Biganzoli, M. Grosso 3.2.1 USE OF LIME IN SAND LIME BRICK C. Tua, M. Grosso APPLICATION 3.2.2 USE OF LIME IN LIGHT-WEIGHT LIME C. Tua, M. Grosso CONCRETE 3.2.3 USE OF LIME IN MORTARS F. P. Campo, M. Grosso 3.2.4 USE OF LIME IN HEMP LIME F. P. Campo, M. Grosso 3.2.5 USE OF LIME IN OTHER CONSTRUCTION F. P. Campo, M. Grosso MATERIALS 3.3.1 USE OF LIME IN SOIL STABILISATION F. P. Campo, C. -
Soft Tools for Robotics and Controls Implementations
Soft Tools for Robotics and Controls Implementations A Thesis Submitted to the Faculty of Drexel University by Robert M. Sherbert in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering June 2011 c Copyright 2011 Robert M. Sherbert. All rights reserved. ii Dedications To the parents who placed me on my path, to the mentors who guided me along its many turns, and to the friends who made the long journey swift. iii Acknowledgments There are a number of people to whom I owe a great deal of thanks in completing this document. While the labor has been my own, the inspiration for it and the support to finish it have come from the community around me. In creating this work I have taken on the role of toolsmith and, as tools are worthless without their users, it is to these individuals that I am especially indebted. I would like to thank Dr. Oh for lending his vision of robotics testing and prototyping which inspired this work. You have taught me more than I realized there was to know about the modern practice of science. I would also like to thank Dr. Chmielewski for lending his experience, insight, and enthusiasm to the project. Having these ideas weighed against and improved by your practical knowledge has provided a very important validation for me. Above all I would like to thank my friends at DASL, without whom the entirety of this project would have been consigned to the dust bin long ago. You have given me not only critical feedback and suggestions but also the support and encouragement that has helped me carry this to completion. -
CSE I Sem Question Bank
M.Tech (Computer Science and Engineering) R-15 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) Sponsored by CMR Educational Society (Affiliated to JNTU, Hyderabad, Approved by AICTE - Accredited by NBA & NAAC – ‘A’ Grade - ISO 9001:2008 Certified) Maisammaguda, Dhulapally (Post Via Hakimpet), Secunderabad – 500100, Telangana State, India. Contact Number: 040-23792146/64634237, E-Mail ID: [email protected], website: www.mrcet.ac.in MASTER OF TECHNOLOGY COMPUTER SCIENCE AND ENGINEERING DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING ACADEMIC REGULATIONS COURSE STRUCTURE AND SYLLABUS (Batches admitted from the academic year 2016 - 2017) Note: The regulations hereunder are subject to amendments as may be made by the Academic Council of the College from time to time. Any or all such amendments will be effective from such date and to such batches of candidates (including those already pursuing the program) as may be decided by the Academic Council. Malla Reddy College of Engineering & Technology Page 0 M.Tech (Computer Science and Engineering) R-15 CONTENTS S.No Name of the Subject Page no 1 Advanced Data Structures and Algorithms 7 2 Course Coverage 9 3 Question Bank 10 4 Advanced Operating System 19 5 Course Coverage 20 6 Question Bank 21 7 Computer System Design 31 8 Course Coverage 33 9 Question Bank 34 10 Software Process And Project Management 39 11 Course Coverage 41 12 Question Bank 42 13 Natural Language Processing 49 14 Internet of Things 51 15 Machine Learning 52 16 Software Architecture -
Firmware Pro Robotické Vozítko
VYSOKÉ UČENÍ TECHNICKÉ V BRNĚ BRNO UNIVERSITY OF TECHNOLOGY FAKULTA ELEKTROTECHNIKY A KOMUNIKAČNÍCH TECHNOLOGIÍ ÚSTAV AUTOMATIZACE A MĚŘICÍ TECHNIKY FACULTY OF ELECTRICAL ENGINEERING AND COMMUNICATION DEPARTMENT OF CONTROL AND INSTRUMENTATION FIRMWARE PRO ROBOTICKÉ VOZÍTKO FIRMWARE FOR THE ROBOTIC VEHICLE DIPLOMOVÁ PRÁCE MASTER'S THESIS AUTOR PRÁCE Bc. LUKÁŠ OTAVA AUTHOR VEDOUCÍ PRÁCE Ing. PAVEL KUČERA, Ph.D. SUPERVISOR BRNO 2013 ABSTRAKT Tato práce je zaměřena na vytvoření firmware pro robotické vozítko, založené na ar- chitektuře ARM Cortex-M3, který využívá operační systém reálného času. Úvodní část obsahuje informace o dostupných operačních systémech reálného času pro malé vestavné systémy, popis architektury ARM Cortex-M3 a hardwarového řešení řídicího systému. Praktická část se zabývá výběrem a měřením zvolených operačních systémů reálného času. Výsledkem práce je firmware složený z programových modulů, které slouží kovlá- dání jednotlivých HW prvků. Je vytvořena také ukázková aplikace, která umožňuje na dálku ovládat pohyb robota a ukládat provozní data robota. KLÍČOVÁ SLOVA ARM, Cortex M3, LM3S8962, reálný čas, RTOS, FreeRTOS, CooCox, CoOS, uC/OSIII, absolutní časování, přepnutí kontextu, DC motor, akcelerometr, FreeRTOS+TRACE, synchronizace, regulátor, SLIP, diagnostika RTOS ABSTRACT This thesis is focused on a firmware for robotic vehicle based on the ARM Cortex- M3 architecture that is running a real-time operating system (RTOS). Theoretical part describes available solutions of embedded RTOS and concrete HW implementation of the robotic vehicle. There is also comparison of the three selected RTOS with their measurements. Result of this thesis is base firmware compounded by a program modules that controls HW parts. There is also a sample PC and firmware application that extends base firmware. -
Business Informatics 2 (PWIN) SS 2021 Lecture 04
Lecture 04 Business Informatics 2 (PWIN) SS 2021 Information Systems III Mobile Information Systems Prof. Dr. Kai Rannenberg Chair of Mobile Business & Multilateral Security Johann Wolfgang Goethe University Frankfurt a. M. Special of the day . “Heads in the Clouds: Measuring the Implications of Universities Migrating to Public Clouds”, v2 (2021-04- 20) . By Tobias Fiebig, Seda Gürses, Carlos H. Gañán, Erna Kotkamp, Fernando Kuipers, Martina Lindorfer, Menghua Prisse, Taritha Sari (TU Delft, TU Wien) . https://arxiv.org/abs/2104.09462 . Typical IS article in general topic and structure . Topic: analysis of information systems of organisations and strategic considerations (in this case universities) . Structure: Introduction, Background, Methodology overview (focus, data set), Data analysis of case(s), Discussion, Limitations, Related work, Conclusion(s), Acknowledgements 2 Agenda . What is Mobility? . Mobile Infrastructure and Ecosystem . Mobile Information Systems . Conclusion on Challenges / Benefits of Mobile IS 3 Mobility What is mobility? Lat. mobilitas: (1) Flexibility, velocity, motion; and as “mobilitas animi”: (mental) fitness (2) But also (and quite ambivalent to (1)) changeability, inconstancy, unstableness [SkuStowPets1998] 4 Mobility . Social implications Mobility not just “humans’ independence from geographical constraints” . Spatial mobility . Temporal mobility . Contextual mobility [KakihaSorens2001] 5 Agenda . What is Mobility? . Mobile Infrastructure & Ecosystem . Mobile Voice & Data Communication Services . Mobile Devices . Smartcards and Subscriber Identity Module (SIM) . Mobile Operating Systems . Mobile Web Apps vs. Mobile Apps . App Markets . Mobile Infrastructure and Ecosystem . Conclusion on Challenges / Benefits of Mobile IS 6 Mobile Voice & Data Communication Services . Mobile device . Base station/mobile station/cell . Connection to the Internet User terminal 7 Mobile Voice & Data Communication Services Fundamental mobile communication services . -
Järjestelmä Multikopterin Lennonohjaustietokoneessa
REAALIAIKAKÄYTTÖ- JÄRJESTELMÄ MULTIKOPTERIN LENNONOHJAUSTIETOKONEESSA Olli Paloniemi Opinnäytetyö Toukokuu 2015 Tietotekniikka Sulautetut järjestelmät ja elektroniikka TIIVISTELMÄ Tampereen ammattikorkeakoulu Tietotekniikka Sulautetut järjestelmät ja elektroniikka PALONIEMI, OLLI: Reaaliaikakäyttöjärjestelmä multikopterin lennonohjaustietokoneessa Opinnäytetyö 48 sivua, joista liitteitä 9 sivua Toukokuu 2015 Tämän opinnäytetyön tarkoituksena oli tarkastella multikopterin lennonohjaustietoko- neelle tehdyn laiteohjelmiston suunnitteluun liittyviä asioita. Laiteohjelmiston pohjana toimi avoimen lähdekoodin FreeRTOS-reaaliaikakäyttöjärjestelmä. Laiteohjelmiston testaus tapahtui tarkoitusta varten rakennetussa lennonohjaustietokoneessa, joka asen- nettiin neliroottoriseen multikopteriin. Työssä tutkittiin multikopterien ohjausmenetelmiä. Radio-ohjauselektroniikasta tuttua pulssinleveyden modulaatioon perustuvaa signaalia käytettiin yhdistämään lennonoh- jaustietokone multikopterin muihin komponentteihin. Lennonohjaustietokoneen anturei- ta ja radiovastaanottimelta tulevaa ohjausta hyödynnettiin PID-säätimissä, joiden on tarkoitus vakauttaa multikopterin lento. Antureiden mittaustulokset yhdistettiin anturi- fuusiolla käyttäen Complementary-suodinta. Säätimiä ja anturifuusiota käytettiin eri ohjaustiloissa, jotka määrittävät sen, miten multikopterin lennonohjausjärjestelmä toi- mii. Lennonohjausjärjestelmän toiminnan reaaliaikaisuus todettiin mittaamalla käyttö- järjestelmän suoritus- ja vasteajat. Opinnäytetyön avulla saatiin tietoa muun -
Palm OS Cobalt 6.1 in February 2004 6.1 in February Cobalt Palm OS Release: Last 11.2 Ios Release: Latest
…… Lecture 11 Market Overview of Mobile Operating Systems and Security Aspects Mobile Business I (WS 2017/18) Prof. Dr. Kai Rannenberg . Deutsche Telekom Chair of Mobile Business & Multilateral Security . Johann Wolfgang Goethe University Frankfurt a. M. Overview …… . The market for mobile devices and mobile OS . Mobile OS unavailable to other device manufacturers . Overview . Palm OS . Apple iOS (Unix-based) . Manufacturer-independent mobile OS . Overview . Symbian platform (by Symbian Foundation) . Embedded Linux . Android (by Open Handset Alliance) . Microsoft Windows CE, Pocket PC, Pocket PC Phone Edition, Mobile . Microsoft Windows Phone 10 . Firefox OS . Attacks and Attacks and security features of selected . mobile OS 2 100% 20% 40% 60% 80% 0% Q1 '09 Q2 '09 Q3 '09 Q1 '10 Android Q2 '10 Q3 '10 Q4 '10 u Q1 '11 sers by operating sers by operating iOS Q2 '11 Worldwide smartphone Worldwide smartphone Q3 '11 Q4 '11 Microsoft Q1 '12 Q2 '12 Q3 '12 OS Q4 '12 RIM Q1 '13 Q2 '13 Q3 '13 Bada Q4' 13** Q1 '14 Q2 '14 s ystem ystem (2009 Q3 '14 Symbian Q4 '14 Q1 '15 [ Q2 '15 Statista2017a] Q3 '15 s ales ales to end Others Q4 '15 Q1 '16 Q2 '16 Q3 '16 - 2017) Q4 '16 Q1 '17 Q2 '17 3 . …… Worldwide smartphone sales to end …… users by operating system (Q2 2013) Android 79,0% Others 0,2% Symbian 0,3% Bada 0,4% BlackBerry OS 2,7% Windows 3,3% iOS 14,2% [Gartner2013] . Android iOS Windows BlackBerry OS Bada Symbian Others 4 Worldwide smartphone sales to end …… users by operating system (Q2 2014) Android 84,7% Others 0,6% BlackBerry OS 0,5% Windows 2,5% iOS 11,7% . -
Mobile OS and Security Aspects
…… Lecture 11 Market Overview of Mobile Operating Systems and Security Aspects Mobile Business I (WS 2015/16) Prof. Dr. Kai Rannenberg . Deutsche Telekom Chair of Mobile Business & Multilateral Security . Johann Wolfgang Goethe University Frankfurt a. M. Overview - Market Overview of Mobile Operating …… Systems and Security Aspects § The Market for mobile devices and mobile OS § Mobile OS unavailable to other device manufacturers § Overview § Palm OS § Apple iOS (Unix-based) § Manufacturer-independent mobile OS § Overview § Symbian platform (by Symbian Foundation) § Embedded Linux § Android (by Open Handset Alliance) § Microsoft Windows CE, Pocket PC, Pocket PC Phone Edition, Mobile § Microsoft Windows Phone 10 . § Firefox OS . § Security features of selected mobile OS . 2 Worldwide Smartphone Sales to End …… Users by Operating System (2009-2015) Market share Market . OS [Statista 2015a] 3 Worldwide Smartphone Sales to End …… Users by Operating System (Q2 2012) Android 64,2% Others 0,6% Symbian 5,9% Bada 2,7% BlackBerry OS 5,2% [Gartner2013] Windows 2,6% . iOS 18,8% . Android iOS Windows BlackBerry OS Bada Symbian Others 4 Worldwide Smartphone Sales to End …… Users by Operating System (Q2 2013) Android 79,0% Others 0,2% Symbian 0,3% Bada 0,4% BlackBerry OS 2,7% Windows 3,3% iOS 14,2% [Gartner2013] . Android iOS Windows BlackBerry OS Bada Symbian Others 5 Worldwide Smartphone Sales to End …… Users by Operating System (Q2 2014) Android 84,7% Others 0,6% BlackBerry OS 0,5% Windows 2,5% iOS 11,7% . Android iOS Windows BlackBerryBlackBerry OS Symbian Bada Others [Statista 2014a] 6 Worldwide Smartphone Sales to End …… Users by Operating System (Q2 2015) Android 82,8% Others 0,4% BlackBerry OS 0,3% Windows 2,6% iOS 13,9% . -
Openmoko Neo1973 User Manual
www.openmoko.com OpenMoko Neo1973 user manual 1 www.openmoko.com Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to providereasonable protection against harmful interference in a residential installation. Thisequipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio/TV technician for help This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. IMPORTANT NOTE: FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. -
“3D Routing with Context Awareness”
Universidade Federal de Pernambuco Centro de Informática Pós-Graduação em Ciência da Computação “3D Routing with Context Awareness” Breno Jacinto Duarte da Costa Advisor: Dr. Djamel Sadok Co-advisor: Dr. Eduardo Souto Recife, march 2009 UNIVERSIDADE FEDERAL DE PERNAMBUCO CENTRO DE INFORMÁTICA PÓS-GRADUAÇÃO EM CIÊNCIA DA COMPUTAÇÃO BRENO JACINTO DUARTE DA COSTA “3D routing with context awareness” THIS DISSERTATION HAS BEEN SUBMITTED TO THE COMPUTER SCIENCE CENTER OF THE FEDERAL UNIVERSITY OF PERNAMBUCO AS A PARTIAL REQUIREMENT TO OBTAIN THE DEGREE OF MASTER IN COMPUTER SCIENCE. ADVISOR: DR. DJAMEL SADOK CO- ADVISOR: DR. EDUARDO SOUTO RECIFE, MARCH/2009 ii 1 2 To my father and mother for creating me. To their parents for creating them. And so on. 3 Acknowledgments There’s a lot to thank for that words can never be enough. I know that there’s a tremendous force behind all this – the existence – and I also know that we are all here for a reason. So, in the deepest level, I’m writing this because of this bigger force, for which I can only feel but not fully understand, but that I’m thankful. Thankful for the chance of being here and learn, improving my spirit. I’m also thankful for everyone else that exists with me: they are a great source of learning as well. My parents are the first ones I should thank, since they created and raised me with care and responsibility. Especially my mother, she was a heroin for raising me and my brothers after my father was gone. Thank you mom, it’s a privilege to be your son. -
Computer Engineering Subject
DIRECTORATE OF TECHNICAL EDUCATION, CHENNAI-25 DIPLOMA EXAMINATIONS-APRIL-2019 DEPT : COMPUTER ENGINEERING SUBJECT : MOBILE COMPUTING QCODE/SUB CODE : 915/35262 PART -A 1. Define LAN.[ 2 marks] A local-area network (LAN) is a computer network that spans a relatively small area. Most often, LAN is confined to a single room, building or group of buildings, however, one LAN can be connected to other LANs over any distance via telephone lines and radio waves. 2. What is meant by Adhoc? [ 2 marks] An ad hoc network is a network that is composed of individual devices communicating with each other directly. The term implies spontaneous or impromptu construction because these networks often bypass the gatekeeping hardware or central access point such as a router 3. What is GSM network? [ 2 marks] GSM stands for Global System for Mobile Communication. GSM is the most widely accepted standard in telecommunications and it is implemented globally. It is a digital cellular technology used for transmitting mobile voice and data services. 4. Write the limitation of GPRS. [ 2 marks] Although GPRS will provide better data rates than is currently available, there are some limitations. • Speeds of 177.2kbps would require a user to use all eight timeslots without any error protection - which simply won't happen. Initial terminals are likely to use only 1-3 timeslots anyway, limiting the available bandwidth to a GPRS user. • When GPRS packets are sent to a destination they are sent in all different directions - allowing for the potential for one or some of those packets to be corrupted or even lost altogether during the data transmission over the radio link.