La Gestion Dynamique De La Qualit De Service Dans Les R Seaux Ip Mobiles
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La Gestion Dynamique De La Qualit De Service Dans Les R Seaux Ip Mobiles
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Author : Badr Benmammar
language : fr
Publisher:
Release Date : 2006
La Gestion Dynamique De La Qualit De Service Dans Les R Seaux Ip Mobiles written by Badr Benmammar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Notre contribution dans le cadre de cette thèse est la proposition d'une nouvelle procédure de réservation de ressources à l'avance dans les réseaux IP mobiles et sans fil. Cette procédure fait appel à un nouvel objet nommé MSpec (Mobility Specification) qui représente lesfutures localisations du terminal mobile. Nous avons proposé un format pour cet objet ainsi qu'un profil de mobilité pour les utilisateurs mobiles qui inclut l'objet MSpec. Ce profil de mobilité découle de l'analyse du comportement de l'utilisateur durant une phase d'observation. Nous avons proposé, également, une extension de ce profil afin de pouvoir gérer le handover vertical (passage d'une technologie d'accès à une autre). Durant la phaase d'observation,l'utilisateur est nouveau et le sytme ne peut donc pas réserver de ressources à l'avance car il ne connaît pas le profil de mobilité de l'utilisateur, et par conséquent le contenu de l'objet MSpec. Sans réservation de ressources à l'avance, nous utilisons la technologie Agent afin d'améliorer la qualité de service demandée par l'utilisateur mobile. Le rôle des agents, dans cette phase, est d'adapter le handover horizontal (passage d'une cellule à une autre en utilisant la même technologie d'accès) et le hadover vertical aux besoins de qualité de service de l'utisateur.
Agriculture Urbaine En Afrique De L Ouest
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Author : O. B. Smith
language : en
Publisher: IDRC
Release Date : 1999
Agriculture Urbaine En Afrique De L Ouest written by O. B. Smith and has been published by IDRC this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Agriculture categories.
Urban Agriculture in West Africa: Contributing to Food Security and Ur
Design Of Survivable Networks With Bounded Rings
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Author : B. Fortz
language : en
Publisher: Springer Science & Business Media
Release Date : 2000-10-31
Design Of Survivable Networks With Bounded Rings written by B. Fortz and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-10-31 with Computers categories.
This book studies the problem of designing, at minimal cost, a two-connected network such that each edge belongs to a cycle of bounded length. This problem arises in the long-term planning of telecommunications networks. The book provides an in-depth study of the underlying polyhedron, proposing several classes of facet-defining inequalities that are used in a branch-and-cut algorithm. Several heuristics are also proposed in order to solve real-world instances of the problem, and extensive numerical results are reported. The polyhedral analysis is done in the best mathematical programming tradition. Results obtained here demonstrate how to use polyhedral theory for practical network design problems, and are therefore of interest for mathematical programming practitioners as an application of classical theoretical concepts. Moreover, telecommunications specialists can find practical solutions to real-world problems, as several heuristics are proposed that can be easily extended to related problems. Audience: Operations research and mathematical programming researchers, and telecommunications specialists.
Vehicular Networks
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Author : André-Luc Beylot
language : en
Publisher: John Wiley & Sons
Release Date : 2013-06-12
Vehicular Networks written by André-Luc Beylot and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-12 with Technology & Engineering categories.
Over the last few years vehicular networks have been receiving a lot of attention from academia, industry, standardization bodies, and the various transportation agencies and departments of many governments around the world. It is envisaged in the next decade that the Intelligent Transportation System (ITS) will become an essential part of our daily life. This book describes models and/or algorithms designed to investigate evolutionary solutions to overcome important issues such as congestion control, routing, clustering, interconnection with long-term evolution (LTE) and LTE advanced cellular networks, traffic signal control and analysis of performances through simulation tools and the generation of vehicular mobility traces for network simulations. It provides an up-to-date progress report on the most significant contributions carried out by the specialized research community in the various fields concerned, in terms of models and algorithms. The proposals and new directions explored by the authors are highly original, and a rather descriptive method has been chosen, which aims at drawing up complete states of the art as well as providing an overall presentation of the personal contributions brought by the authors and clearly illustrating the advantages and limitations as well as issues for future work. Contents 1. Introduction 2. Congestion Control for Safety Vehicular Ad-Hoc Networks 3. Inter-Vehicle Communication for the Next Generation of Intelligent Transport System: Trends in Geographic Ad Hoc Routing Techniques 4. CONVOY: A New Cluster-Based Routing Protocol for Vehicular Networks 5. Complementarity between Vehicular Networks and LTE Networks 6. Gateway Selection Algorithms in a Hybrid VANET-LTE Advanced Network 7. Synthetic Mobility Traces for Vehicular Networking 8. Traffic Signal Control Systems and Car-to-Car Communications About the Authors André-Luc Beylot is Professor in the Telecommunication and Network Department of the ENSEEIHT of IRIT-T, University of Toulouse in France. Houda Labiod is Associate Professor at Telecom ParisTech in the INFRES (Computer Science and Network) Department, France.
Multimedia Over Ip And Wireless Networks
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Author : Mihaela van der Schaar
language : en
Publisher: Elsevier
Release Date : 2011-07-28
Multimedia Over Ip And Wireless Networks written by Mihaela van der Schaar and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-28 with Computers categories.
Multimedia over IP and Wireless Networks is an indispensable guide for professionals or researchers working in areas such as networking, communications, data compression, multimedia processing, streaming architectures, and computer graphics. Beginning with a concise overview of the fundamental principles and challenges of multimedia communication and networking, this book then branches off organically to tackle compression and networking next before moving on to systems, wireless multimedia and more advanced topics. The Compression section advises on the best means and methodology to ensure multimedia signal (images, text, audio and data) integrity for transmissions on wireless and wired systems. The Networking section addresses channel protection and performance. In the Systems section, the focus is on streaming media on demand, live broadcast and video and voice's role in real-time communication. Wireless multimedia transmission and Quality of Service issues are discussed in the Wireless Multimedia section. An Advanced Topics section concludes the book with an assortment of topics including Peer-to-Peer multimedia communication and multipath networks. Up-to-date coverage of existing standards for multimedia networking Synergistic tutorial approach reinforces knowledge gained in previous chapters Balanced treatment of audio and video with coverage of end-to-end systems
Marketing Management
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Author : Johanne Brunet
language : en
Publisher:
Release Date : 2013-08
Marketing Management written by Johanne Brunet and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08 with Marketing categories.
Unesco Culture For Development Indicators
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Author : UNESCO
language : en
Publisher: UNESCO Publishing
Release Date : 2014-12-31
Unesco Culture For Development Indicators written by UNESCO and has been published by UNESCO Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-31 with categories.
Blockchain Capabilities Economic Viability And The Socio Technical Environment
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Author : Nils Braun-Dubler
language : en
Publisher: vdf Hochschulverlag AG
Release Date : 2020-06-16
Blockchain Capabilities Economic Viability And The Socio Technical Environment written by Nils Braun-Dubler and has been published by vdf Hochschulverlag AG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-16 with Technology & Engineering categories.
Blockchain is widely considered a new key technology. The Foundation for Technology Assessment (TA-SWISS) has proposed a comprehensive assessment of blockchain technologies. With this publication, TA-SWISS provides the much-needed social contextualisation of blockchain. The first, more technical part of the study takes an in-depth look at how blockchain functions and examines the economic potential of this technology. By analysing multiple real-world applications, the study sheds light on where the blockchain has advantages over traditional applications and where existing technologies continue to be the better solution. The second part of the study examines how blockchain became mainstream. It explores the origins of blockchain in the early history of information technology and computer networks. The study also reveals the impact blockchain has on industrial and public spaces. Finally, it discusses the social implications and challenges of blockchain against the background of a new socio-technical environment.
Ict And Changing Mindsets In Education
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Author : Kathryn Toure
language : en
Publisher: African Books Collective
Release Date : 2008
Ict And Changing Mindsets In Education written by Kathryn Toure and has been published by African Books Collective this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Computer-assisted instruction categories.
The debate is no longer whether to use information and communication technologies (ICT) in education in Africa but how to do so, and how to ensure equitable access for teachers and learners, whether in urban or rural settings. This is a book about how Africans adopt and adapt ICT. It is also about how ICT shape African schools and classrooms. Why do we use ICT, or not? Do girls and boys use them in the same ways? How are teachers and students in primary and secondary schools in Africa using ICT in teaching and learning? How does the process transform relations among learners, educators and knowledge construction? This collection by 19 researchers from Africa, Europe, and North America, explores these questions from a pedagogical perspective and specific socio-cultural contexts. Many of the contributors draw on learning theory and survey data from 36 schools, 66000 students and 3000 teachers. The book is rich in empirical detail on the perceived importance and appropriation of ICT in the development of education in Africa. It critically examines the potential for creative use of ICT to question habits, change mindsets, and deepen practice. The contributions are in both English and French.
Dynamique Non Lin Aire Et Le Chaos
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Author :
language : en
Publisher:
Release Date : 1993
Dynamique Non Lin Aire Et Le Chaos written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Chaotic behavior in systems categories.