Download or read book Optimisation des ressources pour reseaux mobiles a haut debit written by Khaldoun Al Agha and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gestion des ressources et qualit de service dans les r seaux mobiles multim dias written by Tarek Bejaoui and published by . This book was released on 2005 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans les réseaux mobiles cellulaires, l'intégration des services multimédia sur l'interface radio pose un certain nombre de problèmes, dont le plus important est au niveau de la bande passante, plus limitée que celle offerte dans les réseaux filaires. La gestion de la ressource radio est donc de loin le problème critique de ces réseaux et l'optimisation de l'allocation de ressources s'avère cruciale pour pouvoir y intégrer le support haut débit. Cette thèse s'est donc proposée de développer de nouvelles politiques d'allocation de ressources dans le but de satisfaire les demandes croissantes des abonnées multimédia en termes de qualité de service (QoS), caractérisée par les seuils d'appréciation du service considéré. Ces protocoles, proposés pour des réseaux multiservices de types GPRS (General Packet Radio Service) et UMTS (Universal Mobile Telecommunication System), prennent en considération l'environnement de propagation et la mobilité des utilisateurs et leurs effets sur la QoS qui leur sont offerte.Pour ces deux types de réseaux, de nouvelles fonctions de contrôle d'admission de sessions (CAC) ont également été proposées. Leur rôle est de fournir un meilleur service aux appels acceptés, en limitant la quantité de trafic dans le réseau. Ces nouvelles fonctions tiennent compte des temps d'attente maximaux tolérés pour chaque classe de service et des interférences générées dans le système.En les comparant à certains protocoles de référence adaptés aux multiservices, nos algorithmes d'allocation de ressources proposés fournissent les meilleurs résultats.
Download or read book Forces of Production written by David Noble and published by Routledge. This book was released on 2017-07-12 with total page 749 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on the design and implementation of computer-based automatic machine tools, David F. Noble challenges the idea that technology has a life of its own. Technology has been both a convenient scapegoat and a universal solution, serving to disarm critics, divert attention, depoliticize debate, and dismiss discussion of the fundamental antagonisms and inequalities that continue to beset America. This provocative study of the postwar automation of the American metal-working industry—the heart of a modern industrial economy—explains how dominant institutions like the great corporations, the universities, and the military, along with the ideology of modern engineering shape, the development of technology. Noble shows how the system of "numerical control," perfected at the Massachusetts Institute of Technology (MIT) and put into general industrial use, was chosen over competing systems for reasons other than the technical and economic superiority typically advanced by its promoters. Numerical control took shape at an MIT laboratory rather than in a manufacturing setting, and a market for the new technology was created, not by cost-minded producers, but instead by the U. S. Air Force. Competing methods, equally promising, were rejected because they left control of production in the hands of skilled workers, rather than in those of management or programmers. Noble demonstrates that engineering design is influenced by political, economic, managerial, and sociological considerations, while the deployment of equipment—illustrated by a detailed case history of a large General Electric plant in Massachusetts—can become entangled with such matters as labor classification, shop organization, managerial responsibility, and patterns of authority. In its examination of technology as a human, social process, Forces of Production is a path-breaking contribution to the understanding of this phenomenon in American society.
Download or read book Falling Through the Net written by United States. National Telecommunications and Information Administration and published by . This book was released on 1999 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Expanding the Lexicon written by Sabine Arndt-Lappe and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-01-22 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The creation of new lexical units and patterns has been studied in different research frameworks, focusing on either system-internal or system-external aspects, from which no comprehensive view has emerged. The volume aims to fill this gap by studying dynamic processes in the lexicon – understood in a wide sense as not being necessarily limited to the word level – by bringing together approaches directed to morphological productivity as well as approaches analyzing general types of lexical innovation and the role of discourse-related factors. The papers deal with ongoing changes as well as with historical processes of change in different languages and reflect on patterns and specific subtypes of lexical innovation as well as on their external conditions and the speakers’ motivations for innovating. Moreover, the diffusion and conventionalization of innovations will be addressed. In this way, the volume contributes to understanding the complex interplay of structural, cognitive and functional factors in the lexicon as a highly dynamic domain.
Download or read book UNESCO s Internet universality indicators written by Souter, David and published by UNESCO Publishing. This book was released on 2019-04-23 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annales des t l communications written by and published by . This book was released on 2005 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Efficiency and Productivity Analysis written by Timothy J. Coelli and published by Springer Science & Business Media. This book was released on 2005-07-22 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Softcover version of the second edition Hardcover. Incorporates a new author, Dr. Chris O'Donnell, who brings considerable expertise to the project in the area of performance measurement. Numerous topics are being added and more applications using real data, as well as exercises at the end of the chapters. Data sets, computer codes and software will be available for download from the web to accompany the volume.
Download or read book Research traditions in marketing written by Gilles Laurent and published by Springer Science & Business Media. This book was released on 1994-01-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divergence: A Source of Creative Thinking The outstanding job accomplished by Bernard, Gary, and Gilles is really praiseworthy: not only did they succeed in completing within a remark ably short span of time the editing of the contributions to the conference that marked the 20th Anniversary of the European Institute for Ad vanced Studies in Management; they have also managed to elicit numerous insightful comments from a host of dashing young scholars as well as from the fortunate few established authorities whose findings have long be come leading articles in the best academic journals, who now chair those journals' editorial boards, and after whom great scientific awards have been named. In so doing, our dedicated triumvirate has blended together pieces of diverse research traditions-some of them quite puzzling-and mixed significantly differentiated styles of expression. The controversial display of self-confidence by some distinguished colleagues, the amazingly emo tional "good old" memories revived by their peers, the scapegoat-finding and moralizing confessions produced by some of their disciples together with the detached systematic rigidity of some others all combine to pro duce a multivarious patchwork that may well prove the existence of a marketing scholar lifecycle. This cartoon-like four-class typology might even make it worth the reader's while to indulge in some guesswork to discover the sequence of the four stages as an exercise and then partition the author population accordingly.
Download or read book Multimedia over IP and Wireless Networks written by Mihaela van der Schaar and published by Elsevier. This book was released on 2011-07-28 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Innovate Bristol written by Sven Boermeester and published by . This book was released on 2019-12 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovate Bristol highlights and celebrates those companies and individuals that are actively working at building a better tomorrow for all. Innovation Ecosystems thrive through the involvement and support of companies and individuals from all industries, which is why the Innovate series not only focuses on the innovators but also those people whom the Innovation Ecosystem, would not be able to thrive without.
Download or read book Database Anonymization written by Josep Domingo-Ferrer and published by Morgan & Claypool Publishers. This book was released on 2016-01-01 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current social and economic context increasingly demands open data to improve scientific research and decision making. However, when published data refer to individual respondents, disclosure risk limitation techniques must be implemented to anonymize the data and guarantee by design the fundamental right to privacy of the subjects the data refer to. Disclosure risk limitation has a long record in the statistical and computer science research communities, who have developed a variety of privacy-preserving solutions for data releases. This Synthesis Lecture provides a comprehensive overview of the fundamentals of privacy in data releases focusing on the computer science perspective. Specifically, we detail the privacy models, anonymization methods, and utility and risk metrics that have been proposed so far in the literature. Besides, as a more advanced topic, we identify and discuss in detail connections between several privacy models (i.e., how to accumulate the privacy guarantees they offer to achieve more robust protection and when such guarantees are equivalent or complementary); we also explore the links between anonymization methods and privacy models (how anonymization methods can be used to enforce privacy models and thereby offer ex ante privacy guarantees). These latter topics are relevant to researchers and advanced practitioners, who will gain a deeper understanding on the available data anonymization solutions and the privacy guarantees they can offer.
Download or read book FiWi Access Networks written by Martin Maier and published by Cambridge University Press. This book was released on 2011-12-15 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of broadband access networks toward bimodal fiber-wireless (FiWi) access networks, described in this book, may be viewed as the endgame of broadband access. After discussing the economic impact of broadband access and current worldwide deployment statistics, all the major legacy wireline and wireless broadband access technologies are reviewed. State-of-the-art GPON and EPON fiber access networks are described, including their migration to next-generation systems such as OCDMA and OFDMA PONs. The latest developments of wireless access networks are covered, including VHT WLAN, Gigabit WiMAX, LTE and WMN. The advantages of FiWi access networks are demonstrated by applying powerful network coding, heterogeneous optical and wireless protection, hierarchical frame aggregation, hybrid routing and QoS continuity techniques across the optical-wireless interface. The book is an essential reference for anyone working on optical fiber access networks, wireless access networks or converged FiWi systems.
Download or read book Agroclimatology written by Jerry L. Hatfield and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can we unlock resilience to climate stress by better understanding linkages between the environment and biological systems? Agroclimatology allows us to explore how different processes determine plant response to climate and how climate drives the distribution of crops and their productivity. Editors Jerry L. Hatfield, Mannava V.K. Sivakumar, and John H. Prueger have taken a comprehensive view of agroclimatology to assist and challenge researchers in this important area of study. Major themes include: principles of energy exchange and climatology, understanding climate change and agriculture, linkages of specific biological systems to climatology, the context of pests and diseases, methods of agroclimatology, and the application of agroclimatic principles to problem-solving in agriculture.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Politics Property and Production in the West African Sahel written by Tor Arve Benjaminsen and published by Nordic Africa Institute. This book was released on 2001 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through a number of case studies from the West African Sahel, this book links and explores natural resources management from the perspectives of politics, property and production.
