Evaluation de performances temporelles et optimisation de l'ordonnancement de taches et messages

Evaluation de performances temporelles et optimisation de l'ordonnancement de taches et messages PDF Author: Nicolas Navet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

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Evaluation de performances temporelles et optimisation de l'ordonnancement de taches et messages

Evaluation de performances temporelles et optimisation de l'ordonnancement de taches et messages PDF Author: Nicolas Navet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

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Book Description


Évaluation de performances temporelles et optimisation de l'ordonnancement de tâches et messages

Évaluation de performances temporelles et optimisation de l'ordonnancement de tâches et messages PDF Author: Nicolas Navet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 213

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Book Description
Notre premier objectif est de proposer des méthodes et des outils de vérification du respect des contraintes temporelles d'une application temps réel. Le principal cadre d'application de nos travaux est celui des applications embarquées dans l'automobile distribuées autour d'un réseau CAN. La validation est menée en couplant les techniques de vérification : simulation, analyse et observation sur prototypes. L’apport principal de cette thèse réside en la conception de modèles analytiques qui fournissent des bornes sur les métriques de performance considérées (temps de réponse, probabilité de non-respect des échéances) ou permettant d'évaluer l'occurrence d'événements rares (temps d'atteinte de l'état bus-off d'une station CAN). Nous proposons également une analyse d'ordonnancabilité des applications s'exécutant sur des systèmes d'exploitation se conformant au standard posix1003.1b. Ensuite, considérant qu'il existe généralement plusieurs solutions d'ordonnancement faisables à un même problème, nous avons défini des critères de choix et avons expérimenté une approche, utilisant un algorithme génétique, pour parcourir l'espace des solutions. Notre second objectif est d'étudier des mécanismes d'ordonnancement qui garantissent le respect des échéances du trafic a contraintes strictes tout en minimisant les temps de réponse du trafic a contraintes souples. Nous évaluons les performances de la politique dual-priority pour l'ordonnancement de messages. Pour son utilisation dans des environnements bruites, nous proposons un mécanisme simple donnant des garanties sur la qualité de service exprimée en termes de probabilité de respect des échéances et s'adaptant en-ligne a des conditions de perturbations variables. Nous proposons également une politique concurrente, basée sur une technique de lissage de flux, qui est d'une mise en oeuvre plus aisée. Cette politique préserve la faisabilité du système et sa faible complexité algorithmique permet son utilisation en-ligne.

Fieldbus Systems and Their Applications 2005

Fieldbus Systems and Their Applications 2005 PDF Author: Miguel Leon Chavez
Publisher: Elsevier
ISBN: 0080467636
Category : Technology & Engineering
Languages : en
Pages : 283

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Book Description
The FeT series – Fieldbus Systems and their Applications Conferences started in 1995 in Vienna, Austria. Since FeT'2001 in Nancy, France, the conference became an IFAC – International Federation of Automatic Control sponsored event. These proceedings focus on 13 sessions, covering, fieldbus based systems, services, protocols and profiles, system integration with heterogeneous networks, management, real-time, safety, dependability and security, distributed embedded systems, wireless networking for field applications, education and emerging trends. Two keynote speeches from experts outside Europe are featured. The first one entitled "Bandwidth Allocation Scheme in Fieldbuses" by Prof. Seung Ho, Hanyang University, Korea. The second by, Prof. I.F. Akyildiz, Georgia Institute of Technology, USA, "Key Technologies for Wireless Networking in the Next Decade". - Featuring 36 high quality papers from 13 countries - Keynote speech reflecting the current interest of wireless communications for industrial applications - FeT'2005 was supported by a International Program Committee of around 40 members from 15 countries, 6 from Europe

Building Parallel, Embedded, and Real-Time Applications with Ada

Building Parallel, Embedded, and Real-Time Applications with Ada PDF Author: John W. McCormick
Publisher: Cambridge University Press
ISBN: 1139500007
Category : Computers
Languages : en
Pages : 387

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Book Description
The arrival and popularity of multi-core processors has sparked a renewed interest in the development of parallel programs. Similarly, the availability of low-cost microprocessors and sensors has generated a great interest in embedded real-time programs. This book provides students and programmers whose backgrounds are in traditional sequential programming with the opportunity to expand their capabilities into parallel, embedded, real-time and distributed computing. It also addresses the theoretical foundation of real-time scheduling analysis, focusing on theory that is useful for actual applications. Written by award-winning educators at a level suitable for undergraduates and beginning graduate students, this book is the first truly entry-level textbook in the subject. Complete examples allow readers to understand the context in which a new concept is used, and enable them to build and run the examples, make changes, and observe the results.

Arctic Shipping

Arctic Shipping PDF Author: Frédéric Lasserre
Publisher: Routledge
ISBN: 1351037447
Category : Business & Economics
Languages : en
Pages : 217

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Book Description
This book considers both the present state of Arctic shipping and possible future trends with reference to the various sectors of maritime transportation: cruise tourism, container traffic and bulk shipping. Ports are analysed as tools that support the strategies of coastal states to foster the development of resource extraction, enhance the attractiveness of Arctic shipping lanes and enable the control of maritime activities through coast guard deployment. The aim of this book is to draw a picture of the trends of Arctic shipping. How is traffic evolving in Canada’s Arctic, or along the Northern Sea Route? Are there significant differences between bulk and container shipping segments when considering the Arctic market? How are the ports and the hinterland developing and what are the strategies behind those? How is the legal framework shaping the evolution of maritime transportation? The contributors to this book consider all of these questions, and more, as they map out the prospects for Arctic shipping and analyse in detail the development of Arctic shipping as a result of multi-variable interactions. This book will be key reading for industry professionals and post-graduate students alike.

CIKM'13

CIKM'13 PDF Author: CIKM 13 Conference Committee
Publisher:
ISBN: 9781450326964
Category : Computers
Languages : en
Pages : 938

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Book Description
CIKM'13: 22nd ACM International Conference on Information and Knowledge Management Oct 27, 2013-Nov 01, 2013 San Francisco, USA. You can view more information about this proceeding and all of ACM�s other published conference proceedings from the ACM Digital Library: http://www.acm.org/dl.

Handbook for Integrating Risk Analysis in the Economic Analysis of Projects

Handbook for Integrating Risk Analysis in the Economic Analysis of Projects PDF Author: Asian Development Bank
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 124

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Book Description
Aiming to support the development of a framework for the analysis of risk in project design and economic analysis, this handbook outlines technical approaches to modeling risk. Also summarized is the nature and practice of sensitivity analysis in dealing with uncertain outcomes as well as the principles to consider in typical risk analysis situations sector by sector. Case studies are included to demonstrate the application of quantitative risk analysis using actual Asian Development Bank projects to help improve project design and quality. Handbook users will learn to identify factors that are the key determinants of project outcomes, determine the likelihood of an individual project's returns being unacceptable, and design measures to mitigate the risks arising from the identified key factors.

Energy Technology Perspectives 2010

Energy Technology Perspectives 2010 PDF Author: International Energy Agency
Publisher: Organization for Economic Co-Operation & Development
ISBN:
Category : Business & Economics
Languages : en
Pages : 720

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Book Description
This 2010 edition of Energy Technology Perspectives examines the extent to which an energy technology revolution is taking place, the key technologies that are emerging, the costs and benefits of these technologies, and policies needed to foster their use. ETP 2010 presents updated scenarios from the present to 2050 that show which new technologies will be most important in key sectors and in different regions of the world. It highlights the importance of finance to achieve change, examines the implications of the scenarios for energy security and looks at how to accelerate the deployment of low-carbon technologies in major developing countries. It presents roadmaps and transition pathways for spurring deployment of the most important clean technologies and for overcoming existing barriers. With extensive data, projections and analysis, Energy Technology Perspectives 2010 provides decision makers with the detailed information and insights needed to accelerate the switch to a more secure, low-carbon energy future.

Good Governance and the European Union

Good Governance and the European Union PDF Author: Deirdre Curtin
Publisher: Intersentia nv
ISBN: 9050953816
Category : Administrative law
Languages : en
Pages : 290

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Book Description
This book approaches the notion of good governance from three different angles. First it establishes whether it is a meaningful notion at all by taking a closer look at the parameters of good governance. Secondly, the authors look at the institutional translation of the criteria of good governance. In a third dimension, the concept may be analysed in relation to a number of substantive issues.

Handbook for Synthesizing Qualitative Research

Handbook for Synthesizing Qualitative Research PDF Author: Margarete Sandelowski
Publisher: Springer Publishing Company
ISBN: 0826156940
Category : Medical
Languages : en
Pages : 311

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Book Description
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