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Author : Wafic Muhi-Eddine
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (3 download)
Download or read book Étude des algorithmes de routage adaptatif pour le réseau dédié de service written by Wafic Muhi-Eddine and published by . This book was released on 2008 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christian Glacet
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (87 download)
Download or read book Algorithmes de routage written by Christian Glacet and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Répondre à des requêtes de routage requiert que les entités du réseau, nommées routeurs, aient une connaissance à jour sur la topologie de celui-ci, cette connaissance est appelée table de routage. Le réseau est modélisé par un graphe dans lequel les noeuds représentent les routeurs, et les arêtes les liens de communication entre ceux ci.Cette thèse s'intéresse au calcul des tables de routage dans un modèle distribué.Dans ce modèle, les calculs sont effectués par un ensemble de processus placés sur les noeuds. Chaque processus a pour objectif de calculer la table de routage du noeud sur lequel il se trouve. Pour effectuer ce calcul les processus doivent communiquer entre eux. Dans des réseaux de grande taille, et dans le cadre d'un calcul distribué, le maintien à jour des tables de routage peut être coûteux en terme de communication. L'un des thèmes principaux abordés et celui de la réduction des coûts de communication lors de ce calcul. L'une des solutions apportées consisteà réduire la taille des tables de routage, permettant ainsi de réduire les coûts de communication. Cette stratégie classique dans le modèle centralisé est connue sous le nom de routage compact. Cette thèse présente notamment un algorithme de routage compact distribué permettant de réduire significativement les coûts de communication dans les réseaux tels que le réseau internet, i.e. le réseau des systèmes autonomes ainsi que dans des réseaux sans-échelle. Ce document contient également une étude expérimentale de différents algorithmes de routage compact distribués.Enfin, les problèmes liés à la dynamique du réseau sont également abordés. Plusprécisément le reste de l'étude porte sur un algorithme auto-stabilisant de calcul d'arbre de plus court chemin, ainsi que sur l'impact de la suppression de noeuds ou d'arêtes sur les tables de routage stockées aux routeurs.
Author : THIERRY.. CHICH
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (49 download)
Download or read book OPTIMISATION DU ROUTAGE A DEFLEXION POUR LES RESEAUX DE TELECOMMUNICATIONS METROPOLITAINS written by THIERRY.. CHICH and published by . This book was released on 1997 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS L'AVENIR, LES RESEAUX METROPOLITAINS DEVRONT RELIER DIFFERENTES RESSOURCES INFORMATIQUES A L'ECHELLE D'UNE VILLE. DANS CE CADRE, LA TECHNOLOGIE OPTIQUE, QUI PERMET L'OBTENTION D'UNE BANDE PASSANTE DE L'ORDRE DE LA DIZAINE DE TERABITS/S, EST PROMETTEUSE. CETTE THESE A POUR OBJECTIF DE PROPOSER UNE ETUDE D'UN ROUTAGE PARTICULIEREMENT ADAPTE AUX RESEAUX TOUT-OPTIQUES, LE ROUTAGE PAR DEFLEXION. NOUS NOUS SOMMES PARTICULIEREMENT INTERESSE A LA QUESTION DE LA SYNCHRONISATION DANS LES RESEAUX A DEFLEXION. EN EFFET, LA TRES GRANDE MAJORITE DES ETUDES FAITES SUR LE ROUTAGE PAR DEFLEXION SUPPOSE UNE SYNCHRONISATION DU RESEAU. OR, CELLE-CI IMPOSE QUE LES PAQUETS SOIENT DE TAILLES FIXES. DE PLUS, LES SYNCHRONISATEURS DANS LES RESEAUX TOUT-OPTIQUES SONT COUTEUX, DISSIPATEUR DE PUISSANCE, ET ABAISSE LA FIABILITE DU RESEAU. NOUS AVONS MONTRE QUE DESYNCHRONISER LE RESEAU NE CHANGEAIT PAS FONDAMENTALEMENT SON COMPORTEMENT, CONTRAIREMENT A CE QUI EST SOUVENT AFFIRME, MAIS SEULEMENT SON NIVEAU DE PERFORMANCE. QUI PLUS EST, NOUS AVONS MONTRE QUE LA BAISSE DES PERFORMANCES PROVENAIT MOINS DE L'ASYNCHRONISME EN TANT QUE TEL QUE DE L'ABSENCE D'OPTIMISATION LOCALE SUR LES PREFERENCES DES PAQUETS. UNE TELLE OPTIMISATION EST TOUT A FAIT NATURELLE DANS UN RESEAU SYNCHRONE. NOUS BASANT SUR CETTE PREMIERE ETUDE, NOUS AVONS PROPOSE DEUX METHODES DE NATURES TRES DIFFERENTES POUR OPTIMISER LE ROUTAGE PAR DEFLEXION ASYNCHRONE. LA PREMIERE CONSISTE EN UN ALGORITHME DE ROUTAGE ADAPTATIF QUI PERMET D'EVITER LES ZONES SURCHARGEES DU RESEAU LORSQUE LA TOPOLOGIE EST UNE GRILLE OU UN TORE. CET ALGORITHME A ETE TESTE SOUS DIVERSES CONDITIONS, ET S'EST MONTRE EFFICACE POUR LA DEFLEXION ASYNCHRONE. LA DEUXIEME METHODE EST UN DISPOSITIF PERMETTANT D'EFFECTUER UNE OPTIMISATION LOCALE SUR LES PREFERENCES DES PAQUETS EN MODE ASYNCHRONE. CE DISPOSITIF DONNE D'EXCELLENTS RESULTATS QUI SEMBLENT ETRE DE NATURE A REMETTRE RADICALEMENT EN QUESTION LA NECESSITE DE SYNCHRONISER LES RESEAUX A DEFLEXION.
Author : Christine Charbonnier
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (689 download)
Download or read book LE ROUTAGE DYNAMIQUE DES VEHICULES written by Christine Charbonnier and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL DEVELOPPE DANS CETTE THESE PORTE SUR L'ELABORATION D'ALGORITHMES DE ROUTAGE DYNAMIQUE DES VEHICULES. LES VEHICULES GUIDES SONT EQUIPES D'UN MICROPROCESSEUR EMBARQUE CAPABLE DE COMMUNIQUER AVEC UN CENTRE DE COMMANDE. CES VEHICULES SONT SUFFISAMMENT NOMBREUX POUR QUE L'INTERACTION DU ROUTAGE SUR LE TRAFIC NE SOIT PAS NEGLIGEABLE. L'AUTEUR PRESENTE AVANT TOUT UN BREF HISTORIQUE DES SYSTEMES DE ROUTAGE EXISTANTS PUIS EXPOSE LE PRINCIPE DES ALGORITHMES DE ROUTAGE ACTUELS EN SOULIGNANT LEURS LIMITES. EN SE PLACANT SOUS UNE HYPOTHESE DE NON-SATURATION DU RESEAU, L'AUTEUR UTILISE UN MODELE DE TEMPS DE PARCOURS EN FONCTION DES DEBITS. LA MINIMISATION DU TEMPS DE PARCOURS GLOBAL DES VEHICULES GUIDES DANS LE RESEAU SE FORMULE ALORS COMME UN PROBLEME DE PROGRAMMATION NON LINEAIRE DE GRANDE DIMENSION ET CONDUIT A UN ROUTAGE QUASI-STATIQUE. QUATRE ALGORITHMES SONT PROPOSES ET COMPARES SUR PLUSIEURS RESEAUX TESTS. UN ALGORITHME BASE SUR LA RECHERCHE DE PLUS COURT CHEMIN EST RETENU. L'AUTEUR TRAITE ENSUITE LE PROBLEME DU ROUTAGE DYNAMIQUE DES VEHICULES DANS LE CAS GENERAL (RESEAU SATURE OU NON). L'UTILISATION D'UN MODELE D'ETAT DISCRET DU TRAFIC PERMET DE POSER LE PROBLEME EN TERME DE COMMANDE OPTIMALE. UNE PREMIERE ETUDE REALISEE SUR UN RESEAU SIMPLE MONTRE QUE LE DOMAINE DES COMMANDES ADMISSIBLES NE CONTIENT QUE QUATRE VALEURS; CECI PERMET L'UTILISATION DE LA PROGRAMMATION DYNAMIQUE DIRECTE. POUR DES RESEAUX PLUS COMPLEXES, UNE METHODE DE DECOMPOSITION-COORDINATION EST UTILISEE. LES PERFORMANCES DES DEUX ALGORITHMES PROPOSES SONT ANALYSEES SUR PLUSIEURS RESEAUX TESTS. L'AUTEUR SOULIGNE AINSI LES LIMITES DE VALIDITE DES ALGORITHMES RETENUS. LES GAINS EN TEMPS DE PARCOURS GLOBAL FOURNIS PAR LE ROUTAGE SONT LES SUIVANTS: GAIN TOUJOURS SUPERIEUR A 20% DANS LE CAS QUASI-STATIQUE ET TOUJOURS SUPERIEUR A 7% DANS LE CAS DYNAMIQUE.
Author : United States. Government Accountability Office
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (8 download)
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:
Author : Norbert Streitz
Publisher : Springer
ISBN 13 : 3540727272
Total Pages : 314 pages
Book Rating : 4.5/5 (47 download)
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.
Author : Fritz Machlup
Publisher : Princeton University Press
ISBN 13 : 9780691003566
Total Pages : 440 pages
Book Rating : 4.0/5 (35 download)
Download or read book The Production and Distribution of Knowledge in the United States written by Fritz Machlup and published by Princeton University Press. This book was released on 1962 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Production and Distribution of Knowledge in the United States marked the beginning of the study of our postindustrial information society. Austrian-born economist Fritz Machlup had focused his research on the patent system, but he came to realize that patents were simply one part of a much bigger "knowledge economy." He then expanded the scope of his work to evaluate everything from stationery and typewriters to advertising to presidential addresses--anything that involved the activity of telling anyone anything. The Production and Distribution of Knowledge in the United States then revealed the new and startling shape of the U.S. economy. Machlup's cool appraisal of the data showed that the knowledge industry accounted for nearly 29 percent of the U.S. gross national product, and that 43 percent of the civilian labor force consisted of knowledge transmitters or full-time knowledge receivers. Indeed, the proportion of the labor force involved in the knowledge economy increased from 11 to 32 percent between 1900 and 1959--a monumental shift. Beyond documenting this revolution, Machlup founded the wholly new field of information economics. The transformation to a knowledge economy has resonated throughout the rest of the century, especially with the rise of the Internet. As two recent observers noted, "Information goods--from movies and music to software code and stock quotes--have supplanted industrial goods as the key drivers of world markets." Continued study of this change and its effects is testament to Fritz Machlup's pioneering work.
Author :
Publisher : Lulu.com
ISBN 13 : 9163199769
Total Pages : 461 pages
Book Rating : 4.1/5 (631 download)
Download or read book Iptables Tutorial 1.2.2 written by and published by Lulu.com. This book was released on with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Anna Maria Vegni
Publisher : CRC Press
ISBN 13 : 1498749208
Total Pages : 192 pages
Book Rating : 4.4/5 (987 download)
Download or read book Vehicular Social Networks written by Anna Maria Vegni and published by CRC Press. This book was released on 2017-03-31 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive guide to vehicular social networks. The book focuses on a new class of mobile ad hoc networks that exploits social aspects applied to vehicular environments. Selected topics are related to social networking techniques, social-based routing techniques applied to vehicular networks, data dissemination in VSNs, architectures for VSNs, and novel trends and challenges in VSNs. It provides significant technical and practical insights in different aspects from a basic background on social networking, the inter-related technologies and applications to vehicular ad-hoc networks, the technical challenges, implementation and future trends.
Author : Carl Shapiro
Publisher : Harvard Business Press
ISBN 13 : 9780875848631
Total Pages : 374 pages
Book Rating : 4.8/5 (486 download)
Download or read book Information Rules written by Carl Shapiro and published by Harvard Business Press. This book was released on 1999 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: As one of the first books to distill the economics of information and networks into practical business strategies, this is a guide to the winning moves that can help business leaders--from writers, lawyers and finance professional to executives in the entertainment, publishing and hardware and software industries-- navigate successfully through the information economy.
Author : Angela Bonifati
Publisher : Springer Nature
ISBN 13 : 3031018648
Total Pages : 166 pages
Book Rating : 4.0/5 (31 download)
Download or read book Querying Graphs written by Angela Bonifati and published by Springer Nature. This book was released on 2022-06-01 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graph data modeling and querying arises in many practical application domains such as social and biological networks where the primary focus is on concepts and their relationships and the rich patterns in these complex webs of interconnectivity. In this book, we present a concise unified view on the basic challenges which arise over the complete life cycle of formulating and processing queries on graph databases. To that purpose, we present all major concepts relevant to this life cycle, formulated in terms of a common and unifying ground: the property graph data model—the pre-dominant data model adopted by modern graph database systems. We aim especially to give a coherent and in-depth perspective on current graph querying and an outlook for future developments. Our presentation is self-contained, covering the relevant topics from: graph data models, graph query languages and graph query specification, graph constraints, and graph query processing. We conclude by indicating major open research challenges towards the next generation of graph data management systems.
Author : Rob Flickenger
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 9780596005023
Total Pages : 190 pages
Book Rating : 4.0/5 (5 download)
Download or read book Building Wireless Community Networks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Rob Flickenger
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 9780596005597
Total Pages : 310 pages
Book Rating : 4.0/5 (55 download)
Download or read book Wireless Hacks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuing with the successful Hack Series, this title provides real-world working examples of how to make useful things happen with wireless equipment.
Author : Yichuang Sun
Publisher : IET
ISBN 13 : 0863417450
Total Pages : 411 pages
Book Rating : 4.8/5 (634 download)
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.
Author : Arnaud Banos
Publisher : Elsevier
ISBN 13 : 0081010648
Total Pages : 234 pages
Book Rating : 4.0/5 (81 download)
Download or read book Agent-based Spatial Simulation with NetLogo, Volume 2 written by Arnaud Banos and published by Elsevier. This book was released on 2016-11-26 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whereas Volume 1 introduced the NetLogo platform as a means of prototyping simple models, this second volume focuses on the advanced use of NetLogo to connect both data and theories, making it ideal for the majority of scientific communities. The authors focus on agent-based modeling of spatialized phenomena with a methodological and practical orientation, demonstrating how advanced agent-based spatial simulation methods and technics can be implemented. This book provides theoretical and conceptual backgrounds, as well as algorithmic and technical insights, including code and applets, so that readers can test and re-use most of its content. - Illustrates advanced concepts and methods in agent-based spatial simulation - Features practical examples developed, and commented on, in a unique platform - Provides theoretical and conceptual backgrounds, as well as algorithmic and technical insights, including code and applets, so that readers can test and re-use most of its content
Author : Claudio Scardovi
Publisher : Springer
ISBN 13 : 3319669451
Total Pages : 242 pages
Book Rating : 4.3/5 (196 download)
Download or read book Digital Transformation in Financial Services written by Claudio Scardovi and published by Springer. This book was released on 2017-09-04 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes the set of forces driving the global financial system toward a period of radical transformation and explores the transformational challenges that lie ahead for global and regional or local banks and other financial intermediaries. It is explained how these challenges derive from the newly emerging post-crisis structure of the market and from shadow and digital players across all banking operations. Detailed attention is focused on the impacts of digitalization on the main functions of the financial system, and particularly the banking sector. The author elaborates how an alternative model of banking will enable banks to predict, understand, navigate, and change the external ecosystem in which they compete. The five critical components of this model are data and information mastering; effective use of applied analytics; interconnectivity and “junction playing”; development of new business solutions; and trust and credibility assurance. The analysis is supported by a number of informative case studies. The book will be of interest especially to top and middle managers and employees of banks and financial institutions but also to FinTech players and their advisers and others.
Author : Thomas J. Allen
Publisher : Oxford University Press
ISBN 13 : 0195361784
Total Pages : 545 pages
Book Rating : 4.1/5 (953 download)
Download or read book Information Technology and the Corporation of the 1990s written by Thomas J. Allen and published by Oxford University Press. This book was released on 1994-01-06 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most pathbreaking and influential business books of the 1990s is The Corporation of the 1990s by Michael Scott Morton. Its expert view of how information technology would influence organizations and their ability to survive and prosper in the 1990s has become the benchmark of thinking about information technology. Now, in a supporting companion volume, Information Technology and the Corporation of the 1990s makes available the research on which The Corporation of the 1990s was based. The research was conducted at the Sloan School of Management at MIT by the Management in the 1990s program. The program was funded by a group of 12 industrial and government sponsors from the United States and Britain which included American Express, Digital Equipment Corporation, Eastman Kodak, British Petroleum, MCI Communications, General Motors, U.S. Army, ICL Ltd., Internal Revenue Service, Ernst & Young, BellSouth, and CIGNA Corporation. Information Technology and the Corporation of the 1990s aims to disseminate ideas on how organizations can manage the impact of information technology, and also to raise issues and stimulate further thought by both academics and professionals. The book is divided into three sections which cover the information technology revolution, strategic options, and organization and management responses. It incorporates the work of many important scholars including Charles Jonscher, Michael J. Piore, Thomas W. Malone. JoAnne Yates, Robert I. Benjamin, Gary W. Loveman, Eric von Hippel, Edgar H. Schein, Stanley M. Besen, Garth Saloner, N. Venkatraman, Akbar Zaheer, John C. Henderson, Jay C. Cooprider, Kevin Crowston, Jeongsuk Koh, Gordon Walker, Laura Poppo, John S. Carroll, Constance Perin, Brian T. Pentland, John Chalykoff, Lotte Bailyn, D. Eleanor Westney, Sumantra Ghoshal, John D.C. Little, Thomas J. Allen, Oscar Hauptman, Lisa M. Lynch, Paul Osterman, Thomas A. Kochan, and John Paul MacDuffie.
