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Author: DOMINIQUE.. GRAD
Publisher:
ISBN:
Category :
Languages : fr
Pages : 180
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Book Description
LES COMMUNICATIONS DE GROUPE PRENNENT UNE IMPORTANCE CROISSANTE DANS LES COMMUNICATIONS ACTUELLES DE L'INTERNET. ELLES CONCERNENT DES PARTENAIRES MULTIPLES ET DYNAMIQUES DONT LE NOMBRE ET LA LOCALISATION PHYSIQUE OU LOGIQUE PEUVENT VARIER EN COURS DE COMMUNICATION. LES PROTOCOLES RESEAU, INITIALEMENT CONCUS ET DEPLOYES DANS L'INTERNET POUR DES COMMUNICATIONS POINT A POINT ENTRE PARTENAIRES FIXES, NECESSITENT DES EXTENSIONS POUR CES TYPES PARTICULIERS DE COMMUNICATIONS. LA COMPLEXITE DE CES PROTOCOLES ETENDUS ET LA CHARGE DES HOTES ET ROUTEURS ONT AINSI AUGMENTE DE MANIERE CONSIDERABLE. NOUS PROPOSONS UNE ARCHITECTURE, AU SEIN DE LAQUELLE UNE SOUS-COUCHE D'ADRESSAGE ET DE ROUTAGE LOGIQUES (LAR) PREND EN CHARGE LES COMMUNICATIONS DE GROUPES ET POUR CELA, UTILISE LES SERVICES DE LA COUCHE RESEAU CLASSIQUE. CETTE SOUS-COUCHE PERMET D'UNE PART UNE IDENTIFICATION DES PARTENAIRES DYNAMIQUES, ET D'AUTRE PART LA CONSTRUCTION D'UN ARBRE REDUIT, STRUCTURE DE COMMUNICATION EFFICACE ET DYNAMIQUE, QUI MAINTIENT UNE CONNECTIVITE LOGIQUE ENTRE LES PARTENAIRES. UN AUTRE REDUIT EST UN ARBRE DE DIFFUSION CONSTITUE UNIQUEMENT DES FEUILLES ET DES NOEUDS DE DEGRE SUPERIEUR A DEUX. NOUS PRESENTONS UN ALGORITHME DISTRIBUE DE ROUTAGE LOGIQUE PRENANT EN CHARGE LA CONSTRUCTION DYNAMIQUE D'ARBRES REDUITS. LES RESULTATS DE SIMULATIONS NOUS MONTRENT QUE LA MISE EN UVRE DE L'ARCHITECTURE LAR ET DE L'ALGORITHME DE CONSTRUCTION D'ARBRES REDUITS, PERMET UN ROUTAGE MULTIPOINT ECONOME ET EFFICACE DANS UNE INTERCONNEXION DE GRANDE ETENDUE.
Author: DOMINIQUE.. GRAD
Publisher:
ISBN:
Category :
Languages : fr
Pages : 180
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Book Description
LES COMMUNICATIONS DE GROUPE PRENNENT UNE IMPORTANCE CROISSANTE DANS LES COMMUNICATIONS ACTUELLES DE L'INTERNET. ELLES CONCERNENT DES PARTENAIRES MULTIPLES ET DYNAMIQUES DONT LE NOMBRE ET LA LOCALISATION PHYSIQUE OU LOGIQUE PEUVENT VARIER EN COURS DE COMMUNICATION. LES PROTOCOLES RESEAU, INITIALEMENT CONCUS ET DEPLOYES DANS L'INTERNET POUR DES COMMUNICATIONS POINT A POINT ENTRE PARTENAIRES FIXES, NECESSITENT DES EXTENSIONS POUR CES TYPES PARTICULIERS DE COMMUNICATIONS. LA COMPLEXITE DE CES PROTOCOLES ETENDUS ET LA CHARGE DES HOTES ET ROUTEURS ONT AINSI AUGMENTE DE MANIERE CONSIDERABLE. NOUS PROPOSONS UNE ARCHITECTURE, AU SEIN DE LAQUELLE UNE SOUS-COUCHE D'ADRESSAGE ET DE ROUTAGE LOGIQUES (LAR) PREND EN CHARGE LES COMMUNICATIONS DE GROUPES ET POUR CELA, UTILISE LES SERVICES DE LA COUCHE RESEAU CLASSIQUE. CETTE SOUS-COUCHE PERMET D'UNE PART UNE IDENTIFICATION DES PARTENAIRES DYNAMIQUES, ET D'AUTRE PART LA CONSTRUCTION D'UN ARBRE REDUIT, STRUCTURE DE COMMUNICATION EFFICACE ET DYNAMIQUE, QUI MAINTIENT UNE CONNECTIVITE LOGIQUE ENTRE LES PARTENAIRES. UN AUTRE REDUIT EST UN ARBRE DE DIFFUSION CONSTITUE UNIQUEMENT DES FEUILLES ET DES NOEUDS DE DEGRE SUPERIEUR A DEUX. NOUS PRESENTONS UN ALGORITHME DISTRIBUE DE ROUTAGE LOGIQUE PRENANT EN CHARGE LA CONSTRUCTION DYNAMIQUE D'ARBRES REDUITS. LES RESULTATS DE SIMULATIONS NOUS MONTRENT QUE LA MISE EN UVRE DE L'ARCHITECTURE LAR ET DE L'ALGORITHME DE CONSTRUCTION D'ARBRES REDUITS, PERMET UN ROUTAGE MULTIPOINT ECONOME ET EFFICACE DANS UNE INTERCONNEXION DE GRANDE ETENDUE.
Author:
Publisher:
ISBN:
Category : Computer programming
Languages : fr
Pages : 664
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Book Description
Author:
Publisher:
ISBN:
Category : Computers
Languages : en
Pages : 230
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Book Description
Author: International Association of Science and Technology for Development
Publisher: Anaheim [Calif.] ; Calgary : Acta Press
ISBN:
Category : Computers
Languages : en
Pages : 222
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Book Description
Author: Harald Naunheimer
Publisher: Springer Science & Business Media
ISBN: 3642162142
Category : Technology & Engineering
Languages : en
Pages : 740
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Book Description
This book gives a full account of the development process for automotive transmissions. Main topics: - Overview of the traffic – vehicle – transmission system - Mediating the power flow in vehicles - Selecting the ratios - Vehicle transmission systems - basic design principles - Typical designs of vehicle transmissions - Layout and design of important components, e.g. gearshifting mechanisms, moving-off elements, pumps, retarders - Transmission control units - Product development process, Manufacturing technology of vehicle transmissions, Reliability and testing The book covers manual, automated manual and automatic transmissions as well as continuously variable transmissions and hybrid drives for passenger cars and commercial vehicles. Furthermore, final drives, power take-offs and transfer gearboxes for 4-WD-vehicles are considered. Since the release of the first edition in 1999 there have been a lot of changes in the field of vehicles and transmissions. About 40% of the second edition’s content is new or revised with new data.
Author: Joseph Sifakis
Publisher:
ISBN: 9781601986603
Category : Computers
Languages : en
Pages : 84
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Book Description
Deals with the formalization of the design of mixed hardware/software systems. It advocates rigorous system design as a model-based process leading from requirements to correct implementations and presents the current state of the art in system design, discusses its limitations and identifies possible avenues for overcoming them.
Author:
Publisher: Lulu.com
ISBN: 9163199769
Category :
Languages : en
Pages : 461
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Book Description
Author: Karine Altisen
Publisher: Morgan & Claypool Publishers
ISBN: 1681735377
Category : Computers
Languages : en
Pages : 167
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Book Description
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.
Author: Leonard J Lickorish
Publisher: Routledge
ISBN: 1136391924
Category : Business & Economics
Languages : en
Pages : 257
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Book Description
An Introduction to Tourism is the essential guide to the tourism industry. It provides a comprehensive and authoritative introduction to all facets of tourism including: the history of tourism; factors influencing the tourism industry; tourism in developing countries; sustainable tourism; forecasting future trends. Tourism has changed radically in recent years with the onset of many technological and economic changes and an ever increasing concern for the environment. This book provides a down-to-earth introduction to this complex and multi-faceted industry. This invaluable introduction is written for all students of tourism and all those involved in the industry who want to know more about the structure, component activities and environment within which they work.
Author: Rob Flickenger
Publisher: "O'Reilly Media, Inc."
ISBN: 9780596005023
Category : Computers
Languages : en
Pages : 190
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Book Description
Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.
