Conception Dalgorithmes Distribues De Routage Tolerants Aux Fautes

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ETUDE ANALYTIQUE D'ALGORITHMES DISTRIBUES DE ROUTAGE

Author : Alain Bui
Publisher :
ISBN 13 :
Total Pages : 193 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis ETUDE ANALYTIQUE D'ALGORITHMES DISTRIBUES DE ROUTAGE by : Alain Bui

Download or read book ETUDE ANALYTIQUE D'ALGORITHMES DISTRIBUES DE ROUTAGE written by Alain Bui and published by . This book was released on 1994 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE SE PROPOSE D'ETUDIER LE FONCTIONNEMENT D'UN CERTAIN TYPE D'ALGORITHMES DISTRIBUES DE ROUTAGE TOLERANT AUX DEFAILLANCES SIMPLES VU SOUS L'ANGLE DE L'OPTIMISATION. L'ANALYSE DE CES ALGORITHMES MONTRE QUE CHAQUE SITE (POUR UN RESEAU QUELCONQUE EN COMPORTANT N) PEUT SE TROUVER DANS DIFFERENTS ETATS DETERMINES. SUITE A LA CLASSIFICATION DE CES ETATS, NOTRE BUT EST D'ETUDIER LE COMPORTEMENT LOCAL DE CHAQUE SITE A TRAVERS UN MODELE BASE SUR UN TYPE DE RESEAU DE CHAINES DE MARKOV HOMOGENES EN FONCTION DE RELATIONS GLOBALES LES LIANT. A L'AIDE D'UNE FONCTION DE CHOIX BASEE SUR LES TEMPS MOYENS DE RETOUR A CERTAINS ETATS, NOUS ETABLISSONS DES CRITERES D'OPTIMALITE TRADUISANT LES CONDITIONS POUR UN FONCTIONNEMENT OPTIMAL. LE PROBLEME SE RAMENE AINSI A UN PROBLEME D'OPTIMISATION SOUS CONTRAINTES. LA RESOLUTION DE CE PROBLEME NOUS AMENE A INTRODUIRE LA NOTION DE BRIDAGE, QUI CORRESPOND A UNE FERMETURE PARTIELLE DU DOMAINE DES VARIABLES. A PARTIR DE LA, UNE ETUDE MATHEMATIQUE A ETE ENTREPRISE AFIN DE DEFINIR LES CONDITIONS NECESSAIRES ET SUFFISANTES D'EXISTENCE ET LES PROPRIETES DU BRIDAGE. NOUS COMPLETONS L'ETUDE PAR LA CONSTRUCTION D'UN OUTIL D'EVALUATION CONDUISANT A UN ENSEMBLE FLOU DE SOLUTIONS. CET ENSEMBLE PERMET DE DETERMINER LE DEGRE DE PROXIMITE D'UNE SOLUTION QUELCONQUE PAR RAPPORT A LA SOLUTION OPTIMALE. ON OBTIENT UNE VUE GLOBALE DE L'ENSEMBLE DES SOLUTIONS. AINSI, NOUS AVONS ETABLI UNE HIERARCHIE SUR LES SOLUTIONS. NOUS L'APPELONS HIERARCHIE DU PREMIER ORDRE CAR LA FONCTION DE CHOIX FAIT INTERVENIR LES MOMENTS D'ORDRE 1. AFIN DE DEPARTAGER DES SOLUTIONS EQUIVALENTES DANS CETTE HIERARCHIE, NOUS DEFINISSONS UNE METHODE QUE NOUS APPELONS HIERARCHISATION DU SECOND ORDRE QUI EST BASEE SUR LA COMPARAISON DES MOMENTS D'ORDRE 2. ENFIN, NOUS ETABLISSONS UN ALGORITHME DE CALCULS A PARTIR DES RESULTATS THEORIQUES DEMONTRES TOUT AU LONG DE L'ETUDE: ENUMERATION DES BRIDAGES ADEQUATS, CALCUL DES SOLUTIONS OPTIMALES, ETC, C'EST A DIRE QUE L'ON PROCEDE A UNE RESOLUTION COMPLETE

Contribution à la tolérance aux fautes dans les applications distribuées

Author : Nassireddine Yahfoufi
Publisher :
ISBN 13 :
Total Pages : 326 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis Contribution à la tolérance aux fautes dans les applications distribuées by : Nassireddine Yahfoufi

Download or read book Contribution à la tolérance aux fautes dans les applications distribuées written by Nassireddine Yahfoufi and published by . This book was released on 1999 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette@ thèse traite des méthodes de tolérance aux fautes pour des applications distribuées, principalement celles de type recherche arborescente comme le branch & bound en optimisation combinatoire. En spécifiant l'application à travers les structures des données utilisées (file de priorité) et les opérations portant sur ces structures, la tolérance aux fautes devient possible au niveau des applications. Après l'introduction (chapitre 1) de la classe d'applications étudiées et du domaine de la tolérance aux fautes, cette étude propose trois approches du problème. _ La première approche présente un algorithme distribué écrit sous forme d'ensemble de règles (chapitre 2). Il s'est inspiré de la démarche de conception d'algorithmes auto-stabilisants. _ La deuxième décrit le modèle coordinateur-travailleur qui est implémente concrètement sur une architecture distribuée de type réseau de stations de travail (chapitre 3). Une généralisation de ce modèle, décrite au chapitre 4, permet à la communauté de recherche opérationnelle de développer facilement des algorithmes branch & bound tolérant aux fautes. _ La troisième approche propose une tolérance aux fautes liée à un équilibrage de charge dynamique (chapitre 5). Elle est fondée sur un protocole inspiré des techniques utilisées dans les bases de données

Graph Colouring and the Probabilistic Method

Author : Michael Molloy
Publisher : Springer Science & Business Media
ISBN 13 : 3642040160
Total Pages : 320 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Graph Colouring and the Probabilistic Method by : Michael Molloy

Download or read book Graph Colouring and the Probabilistic Method written by Michael Molloy and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, many major advances have been made in the field of graph coloring via the probabilistic method. This monograph, by two of the best on the topic, provides an accessible and unified treatment of these results, using tools such as the Lovasz Local Lemma and Talagrand's concentration inequality.

The Disappearing Computer

Author : Norbert Streitz
Publisher : Springer
ISBN 13 : 3540727272
Total Pages : 314 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis The Disappearing Computer by : Norbert Streitz

Download or read book The Disappearing Computer written by Norbert Streitz and published by Springer. This book was released on 2007-07-20 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines how the computer, as we currently know it, will be replaced by a new generation of technologies, moving computing off the desktop and ultimately integrating it with real world objects and everyday environments. It provides a unique combination of concepts, methods and prototypes of ubiquitous and pervasive computing reflecting the current interest in smart environments and ambient intelligence.

Introduction to Distributed Self-Stabilizing Algorithms

Author : Karine Altisen
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1681735377
Total Pages : 167 pages
Book Rating : 4.6/5 (817 download)

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Book Synopsis Introduction to Distributed Self-Stabilizing Algorithms by : Karine Altisen

Download or read book Introduction to Distributed Self-Stabilizing Algorithms written by Karine Altisen and published by Morgan & Claypool Publishers. This book was released on 2019-04-15 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims at being a comprehensive and pedagogical introduction to the concept of self-stabilization, introduced by Edsger Wybe Dijkstra in 1973. Self-stabilization characterizes the ability of a distributed algorithm to converge within finite time to a configuration from which its behavior is correct (i.e., satisfies a given specification), regardless the arbitrary initial configuration of the system. This arbitrary initial configuration may be the result of the occurrence of a finite number of transient faults. Hence, self-stabilization is actually considered as a versatile non-masking fault tolerance approach, since it recovers from the effect of any finite number of such faults in a unified manner. Another major interest of such an automatic recovery method comes from the difficulty of resetting malfunctioning devices in a large-scale (and so, geographically spread) distributed system (the Internet, Pair-to-Pair networks, and Delay Tolerant Networks are examples of such distributed systems). Furthermore, self-stabilization is usually recognized as a lightweight property to achieve fault tolerance as compared to other classical fault tolerance approaches. Indeed, the overhead, both in terms of time and space, of state-of-the-art self-stabilizing algorithms is commonly small. This makes self-stabilization very attractive for distributed systems equipped of processes with low computational and memory capabilities, such as wireless sensor networks. After more than 40 years of existence, self-stabilization is now sufficiently established as an important field of research in theoretical distributed computing to justify its teaching in advanced research-oriented graduate courses. This book is an initiation course, which consists of the formal definition of self-stabilization and its related concepts, followed by a deep review and study of classical (simple) algorithms, commonly used proof schemes and design patterns, as well as premium results issued from the self-stabilizing community. As often happens in the self-stabilizing area, in this book we focus on the proof of correctness and the analytical complexity of the studied distributed self-stabilizing algorithms. Finally, we underline that most of the algorithms studied in this book are actually dedicated to the high-level atomic-state model, which is the most commonly used computational model in the self-stabilizing area. However, in the last chapter, we present general techniques to achieve self-stabilization in the low-level message passing model, as well as example algorithms.

Self-Stabilizing Systems

Author : Sukumar Ghosh
Publisher : Carleton University Press
ISBN 13 : 9780886293338
Total Pages : 228 pages
Book Rating : 4.2/5 (933 download)

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Book Synopsis Self-Stabilizing Systems by : Sukumar Ghosh

Download or read book Self-Stabilizing Systems written by Sukumar Ghosh and published by Carleton University Press. This book was released on 1997 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self- governing control is a defining characteristic of autonomous computing machinery. Autonomy implies some degree of independence, and when a system's ability to achieve its mission is independent of how it is initialized, the system is self-stabilizing. Application of self-stabilization to system and network components is motivated by core concerns of fault-tolerance in distributed systems. Self-stabilization is a solution to problems of transient memory faults and systems with dynamic reconfigurations. Research in self-stabilization explores many of the classic themes of distributed computing (distributed graph algorithms, mutual exclusion, distributed agreement). Recent papers combine self-stabilization with traditional forms of fault-tolerance, consider methodological issues for the design of self-stabilizing systems, investigate randomized techniques, and apply stabilization to new networking models. The workshop brings together concerns from theory and practice of self-stabilization.

Ultra Wide Band Antennas

Author : Xavier Begaud
Publisher : John Wiley & Sons
ISBN 13 : 1118586573
Total Pages : 217 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Ultra Wide Band Antennas by : Xavier Begaud

Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.

MIMO

Author : Alain Sibille
Publisher : Academic Press
ISBN 13 : 0123821959
Total Pages : 385 pages
Book Rating : 4.1/5 (238 download)

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Book Synopsis MIMO by : Alain Sibille

Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)

Test and Diagnosis of Analogue, Mixed-signal and RF Integrated Circuits

Author : Yichuang Sun
Publisher : IET
ISBN 13 : 0863417450
Total Pages : 411 pages
Book Rating : 4.8/5 (634 download)

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Book Synopsis Test and Diagnosis of Analogue, Mixed-signal and RF Integrated Circuits by : Yichuang Sun

Download or read book Test and Diagnosis of Analogue, Mixed-signal and RF Integrated Circuits written by Yichuang Sun and published by IET. This book was released on 2008-05-30 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive discussion of automatic testing, diagnosis and tuning of analogue, mixed-signal and RF integrated circuits, and systems in a single source. As well as fundamental concepts and techniques, the book reports systematically the state of the arts and future research directions of those areas. A complete range of circuit components are covered and test issues from the SoC perspective. An essential reference for researchers and engineers in mixed signal testing, postgraduate and senior undergraduate students.

Polar-orbiting environmental satellites

Author : United States. Government Accountability Office
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (8 download)

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Book Synopsis Polar-orbiting environmental satellites by : United States. Government Accountability Office

Download or read book Polar-orbiting environmental satellites written by United States. Government Accountability Office and published by . This book was released on 2012 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proof Theory and Automated Deduction

Author : Jean Goubault-Larrecq
Publisher : Springer Science & Business Media
ISBN 13 : 9781402003684
Total Pages : 448 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Proof Theory and Automated Deduction by : Jean Goubault-Larrecq

Download or read book Proof Theory and Automated Deduction written by Jean Goubault-Larrecq and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in computer applications has led to a new attitude to applied logic in which researchers tailor a logic in the same way they define a computer language. In response to this attitude, this text for undergraduate and graduate students discusses major algorithmic methodologies, and tableaux and resolution methods. The authors focus on first-order logic, the use of proof theory, and the computer application of automated searches for proofs of mathematical propositions. Annotation copyrighted by Book News, Inc., Portland, OR

Pervasive Mobile and Ambient Wireless Communications

Author : Roberto Verdone
Publisher : Springer Science & Business Media
ISBN 13 : 144712314X
Total Pages : 696 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Pervasive Mobile and Ambient Wireless Communications by : Roberto Verdone

Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.

Communication and Agreement Abstractions for Fault-Tolerant Asynchronous Distributed Systems

Author : Michel Raynal
Publisher : Springer Nature
ISBN 13 : 3031020006
Total Pages : 251 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Communication and Agreement Abstractions for Fault-Tolerant Asynchronous Distributed Systems by : Michel Raynal

Download or read book Communication and Agreement Abstractions for Fault-Tolerant Asynchronous Distributed Systems written by Michel Raynal and published by Springer Nature. This book was released on 2022-06-01 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding distributed computing is not an easy task. This is due to the many facets of uncertainty one has to cope with and master in order to produce correct distributed software. Considering the uncertainty created by asynchrony and process crash failures in the context of message-passing systems, the book focuses on the main abstractions that one has to understand and master in order to be able to produce software with guaranteed properties. These fundamental abstractions are communication abstractions that allow the processes to communicate consistently (namely the register abstraction and the reliable broadcast abstraction), and the consensus agreement abstractions that allows them to cooperate despite failures. As they give a precise meaning to the words "communicate" and "agree" despite asynchrony and failures, these abstractions allow distributed programs to be designed with properties that can be stated and proved. Impossibility results are associated with these abstractions. Hence, in order to circumvent these impossibilities, the book relies on the failure detector approach, and, consequently, that approach to fault-tolerance is central to the book. Table of Contents: List of Figures / The Atomic Register Abstraction / Implementing an Atomic Register in a Crash-Prone Asynchronous System / The Uniform Reliable Broadcast Abstraction / Uniform Reliable Broadcast Abstraction Despite Unreliable Channels / The Consensus Abstraction / Consensus Algorithms for Asynchronous Systems Enriched with Various Failure Detectors / Constructing Failure Detectors

Fault-Tolerant Message-Passing Distributed Systems

Author : Michel Raynal
Publisher : Springer
ISBN 13 : 3319941410
Total Pages : 468 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Fault-Tolerant Message-Passing Distributed Systems by : Michel Raynal

Download or read book Fault-Tolerant Message-Passing Distributed Systems written by Michel Raynal and published by Springer. This book was released on 2018-09-08 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most important fault-tolerant distributed programming abstractions and their associated distributed algorithms, in particular in terms of reliable communication and agreement, which lie at the heart of nearly all distributed applications. These programming abstractions, distributed objects or services, allow software designers and programmers to cope with asynchrony and the most important types of failures such as process crashes, message losses, and malicious behaviors of computing entities, widely known under the term "Byzantine fault-tolerance". The author introduces these notions in an incremental manner, starting from a clear specification, followed by algorithms which are first described intuitively and then proved correct. The book also presents impossibility results in classic distributed computing models, along with strategies, mainly failure detectors and randomization, that allow us to enrich these models. In this sense, the book constitutes an introduction to the science of distributed computing, with applications in all domains of distributed systems, such as cloud computing and blockchains. Each chapter comes with exercises and bibliographic notes to help the reader approach, understand, and master the fascinating field of fault-tolerant distributed computing.

Elements of Distributed Computing

Author : Vijay K. Garg
Publisher : John Wiley & Sons
ISBN 13 : 9780471036005
Total Pages : 448 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Elements of Distributed Computing by : Vijay K. Garg

Download or read book Elements of Distributed Computing written by Vijay K. Garg and published by John Wiley & Sons. This book was released on 2002-05-23 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mit der Verfügbarkeit verteilter Systeme wächst der Bedarf an einer fundamentalen Diskussion dieses Gebiets. Hier ist sie! Abgedeckt werden die grundlegenden Konzepte wie Zeit, Zustand, Gleichzeitigkeit, Reihenfolge, Kenntnis, Fehler und Übereinstimmung. Die Betonung liegt auf der Entwicklung allgemeiner Mechanismen, die auf eine Vielzahl von Problemen angewendet werden können. Sorgfältig ausgewählte Beispiele (Taktgeber, Sperren, Kameras, Sensoren, Controller, Slicer und Syncronizer) dienen gleichzeitig der Vertiefung theoretischer Aspekte und deren Umsetzung in die Praxis. Alle vorgestellten Algorithmen werden mit durchschaubaren, induktionsbasierten Verfahren bewiesen.

Advanced Circuits for Emerging Technologies

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Advanced Circuits for Emerging Technologies by :

Download or read book Advanced Circuits for Emerging Technologies written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Global Warming and Climate Change

Author : Emma Carlson Berne
Publisher : Referencepoint Press
ISBN 13 : 9781601520197
Total Pages : 118 pages
Book Rating : 4.5/5 (21 download)

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Book Synopsis Global Warming and Climate Change by : Emma Carlson Berne

Download or read book Global Warming and Climate Change written by Emma Carlson Berne and published by Referencepoint Press. This book was released on 2008 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world, the cause and impact of global warming and climate change is being passionately debated. While many claim that a climate crisis is imminent if greenhouse gases are not curbed, others argue that the effects have been overblown. Through objective overviews, primary sources, and full-color illustrations, this title will examine What Is Global Warming and Climate Change? What Are the Consequences of Global Warming? What Are the Controversies Surrounding Global Warming? What Are the Solutions for Global Warming?