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Ordonnancement Automatique Dapplications Presentant Des Contraintes De Qualite De Service Temporelles
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Book Synopsis ORDONNANCEMENT AUTOMATIQUE D'APPLICATIONS PRESENTANT DES CONTRAINTES DE QUALITE DE SERVICE TEMPORELLES by : JOCELYNE.. GISSLER FARHAT
Download or read book ORDONNANCEMENT AUTOMATIQUE D'APPLICATIONS PRESENTANT DES CONTRAINTES DE QUALITE DE SERVICE TEMPORELLES written by JOCELYNE.. GISSLER FARHAT and published by . This book was released on 1996 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CETTE THESE NOUS NOUS INTERESSONS AU SUPPORT DES APPLICATIONS PRESENTANT DES CONTRAINTES DE QUALITE DE SERVICE (QOS) TEMPORELLES. LA PRISE EN COMPTE DE CES CONTRAINTES EST AJOURD'HUI FAITE MANUELLEMENT PAR LE DEVELOPPEUR D'APPLICATIONS QUI DOIT LES TRADUIRE EN DIRECTIVES D'ORDONNANCEMENT. NOUS PROPOSONS UNE APPROCHE DANS LAQUELLE LES CONTRAINTES DE QOS TEMPORELLES SONT AUTOMATIQUEMENT TRADUITES EN DIRECTIVES D'ORDONNANCEMENT. DANS CETTE APPROCHE, LE DEVELOPPEUR D'APPLICATIONS SPECIFIE DES CONTRAINTES TEMPORELLES ENTRE LES EVENEMENTS IMPORTANTS DE SON APPLICATION (SOUS FORME D'EQUATIONS DE QOS SIMPLES). CES CONTRAINTES TEMPORELLES SONT ALORS AUTOMATIQUEMENT TRADUITES EN DIRECTIVES D'ORDONNACEMENT. POUR CE FAIRE, LES FILS DE CONTROLE DE L'APPLICATION SONT DECOUPES EN BRINS AUXQUELS ON ASSOCIE DES ECHEANCES DERIVEES DES CONTRAINTES TEMPORELLES SPECIFIEES. LA DECOMPOSITION EN BRINS GUIDE L'ORDONNANCEMENT DES FILS DE CONTROLE APPLICATIFS ASSOCIES. LE SYSTEME SUPPORT MET EN UVRE UN MECANISME D'ORDONNANCEMENT COOPERATIF BASE SUR UN DIALOGUE ENTRE L'ORDONNANCEUR DU SYSTEME D'EXPLOITATION ET L'ORDONNANCEUR APPLICATIF. LES DEUX ORDONNANCEURS APPLIQUENT UNE POLITIQUE D'ORDONNANCEMENT EDF (ECHEANCE LA PLUS PROCHE D'ABORD). ILS ORDONNANCENT AU MIEUX EN TENANT COMPTE DES CONTRAINTES IMPOSEES. ETANT DONNE QUE CETTE APPROCHE NE PERMET PAS DE GARANTIR LE RESPECT DES CONTRAINTES DE QOS TEMPORELLES, LES APPLICATIONS DOIVENT ETRE CAPABLES D'ADAPTER CES CONTRAINTES A L'ENVIRONNEMENT D'EXECUTION ET PAR LA-MEME AUX VARIATIONS DE LA CHARGE DU SYSTEME. POUR CETTE RAISON, L'ORDONNANCEUR APPLICATIF MET EN UVRE UNE POLITIQUE DE GESTION DES VARIATIONS DE LA CHARGE BASEE SUR LES SPECIFICATIONS DU DEVELOPPEUR D'APPLICATIONS. UN PROTOCOLE DE PARTAGE DES RESSOURCES EST EGALEMENT PROPOSE POUR PERMETTRE AUX FILS DE CONTROLE APPLICATIFS DE PARTAGER DES RESSOURCES SANS RISQUE D'INTER-BLOCAGE. DES MESURES DU COUT ADDITIONNEL ENGENDRE PAR L'ORDONNANCEMENT AUTOMATIQUE SONT EFFECTUEES GRACE A UN DEMONSTRATEUR QUE NOUS AVONS DEVELOPPE. LES MESURES SONT ENCOURAGEANTES. ELLES SONT, CEPENDANT TRES DEPENDANTES DE LA STRUCTURE DU GRAPHE DE DEPENDANCES GENERE A PARTIR DES PORTIONS DE CODE DE L'APPLICATION.
Book Synopsis Ordonnancement temps réel avec contraintes de qualité de service by : Audrey Marchand
Download or read book Ordonnancement temps réel avec contraintes de qualité de service written by Audrey Marchand and published by . This book was released on 2006 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail de thèse présenté dans ce rapport a pour finalité de proposer des solutions à l'ordonnancement dans les systèmes informatiques temps-réel à contraintes fermes (TRCF). Le système est supposé assurer l'ordonnancement de tâches périodiques définies sous des contraintes de Qualité de Service (QoS). Il doit aussi être capable de gérer l'occurrence de tâches apériodiques pouvant induire une surcharge temporaire de traitement. Dans un premier temps, une introduction à l'ordonnancement dans les systèmes temps-réel et une synthèse bibliographique sur l'ordonnancement en présence de surcharge, sont présentées. En second lieu, deux nouvelles stratégies d'ordonnancement de tâches périodiques définies sous des contraintes de QoS utilisant le modèle Skip-Over, sont proposées. Nous consacrons ensuite notre étude à la problématique de l'ordonnancement d'un ensemble hybride de tâches constitué de tâches périodiques définies sous des contraintes de QoS et de tâches apériodiques. La contribution des travaux de thèse se focalise sur l'utilisation du serveur optimal EDL (Earliest Deadline as Late as possible) avec des tâches périodiques présentant des contraintes de QoS. Puis, nous nous intéressons à l'évaluation des stratégies d'ordonnancement proposées sur la base d, la stabilité et la robustesse. S'appuyant sur des travaux précédents relatifs à la tolérance aux fautes, nous présentons deux nouveaux algorithmes d'ordonnancement pour le modèle Skip-Over, qui améliorent le comportement d'un système avec des contraintes de QoS. En dernier lieu, nous présentons l'intégration, sous Linux temps-réel, des différentes stratégies d'ordonnancement sous contraintes de QoS.
Book Synopsis ORDONNANCEMENT DU CPU INTEGRANT LA GESTION DE LA SYNCHRONISATION ET DE L'ADAPTATION DE FLOTS MULTIMEDIA by : DANIELA.. BOURGES WALDEGG
Download or read book ORDONNANCEMENT DU CPU INTEGRANT LA GESTION DE LA SYNCHRONISATION ET DE L'ADAPTATION DE FLOTS MULTIMEDIA written by DANIELA.. BOURGES WALDEGG and published by . This book was released on 1998 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE S'INTERESSE A L'ORDONNANCEMENT DU CPU POUR DES APPLICATIONS DE PRESENTATION MULTIMEDIA REPARTIES, DANS LE CADRE DES SYSTEMES D'EXPLOITATION A BUT GENERAL OU LA QUALITE DES APPLICATIONS PEUT S'ADAPTER AUX CONDITIONS D'EXECUTION. LES FLOTS MULTIMEDIA PRESENTENT DES CONTRAINTES TEMPORELLES QUI DOIVENT ETRE PRISES EN COMPTE LORS DE L'ALLOCATION DE RESSOURCES, AUSSI BIEN DANS LES RESEAUX QUE DANS LES SYSTEMES, AFIN DE SATISFAIRE LA QUALITE DE SERVICE (QOS) DEMANDEE PAR L'UTILISATEUR. CES CONTRAINTES TEMPORELLES SE REFERENT A LA CONTINUITE DES FLOTS INDIVIDUELS, AUSSI APPELEE SYNCHRONISATION INTRA-FLOT, AINSI QU'AUX RELATIONS TEMPORELLES ENTRE FLOTS DIFFERENTS, OU SYNCHRONISATION INTER-FLOTS. L'ALLOCATION DU CPU DANS DES SYSTEMES UNIX TRADITIONNELLES NE PERMET PAS D'OFFRIR AUX APPLICATIONS MULTIMEDIA UN SERVICE CAPABLE DE SATISFAIRE CES CONTRAINTES. LES APPROCHES EXISTANTES VISANT A RESOUDRE CE PROBLEME NE CONSIDERENT QUE LES BESOINS DES FLOTS INDIVIDUELS, LA SYNCHRONISATION INTER-FLOTS N'ETANT DONC PAS ASSUREE. NOUS PROPOSONS UN MODELE D'ORDONNANCEMENT QUI PERMET DE GERER L'ALLOCATION DU CPU EN RESPECTANT AUSSI BIEN LA CONTINUITE QUE LA SYNCHRONISATION INTER-FLOTS. DANS LE CADRE DE CE MODELE, NOUS DEFINISSONS UNE STRUCTURE D'APPLICATION GENERIQUE QUI PERMET DE PROJETER LES BESOINS DES FLOTS CONTINUS SUR DES UNITES D'EXECUTION DU SYSTEME, ET DE TRANSMETTRE LES BESOINS DE QOS DE SYNCHRONISATION A L'ORDONNANCEUR SOUS FORME DE TSPN (TIME STREAMS PETRI NETS). NOUS DEFINISSONS UN ALGORITHME D'ORDONNANCEMENT DONT LE BUT EST DE RESPECTER LES CONTRAINTES TEMPORELLES DES FLOTS LES PLUS SENSIBLES, TOUT EN MINIMISANT LA DEGRADATION POUR LES FLOTS ADAPTATIFS POUR UNE CAPACITE DE CPU DONNEE, ET EN PRESERVANT LES RELATIONS TEMPORELLES ENTRE LES FLOTS. L'ADAPTATION EST DONC CONTROLEE PAR LE BIAIS DE L'ORDONNANCEUR, ELIMINANT UNE COUCHE DE DECISION QUI PEUT PROVOQUER DES DEGRADATIONS PLUS IMPORTANTES QUE NECESSAIRE.
Book Synopsis Supply Chain Management by : John T. Mentzer
Download or read book Supply Chain Management written by John T. Mentzer and published by SAGE. This book was released on 2001 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a comprehensive model of supply chain management. Experienced executives from 20 companies clearly define supply chain management, identifying those factors that contribute to its effective implementation. They provide practical guidelines on how companies can manage supply chains, addressing the role of all the traditional business functions in supply chain management and suggest how the adoption of a supply chain management approach can affect business strategy and corporate performance.
Book Synopsis Human Performance in Planning and Scheduling by : B L MacCarthy
Download or read book Human Performance in Planning and Scheduling written by B L MacCarthy and published by CRC Press. This book was released on 2003-09-02 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding how to make the best of human skills and knowledge is essential in the design of technology and jobs, particularly where these involve decision-making and uncertainty. Recent developments have been made in naturalistic decision-making, distributed cognition and situational awareness, particularly with respect to aviation, transport and strategic planning, the nuclear industry and other high-risk industries. Despite the integration of computer-based support systems in production scheduling in recent years, the reality is that most enterprises consist of reactive re-scheduling, involving a high degree of human involvement. It is often with the insight, knowledge and skills of people that scheduling skills can function with any degree of success. Human Performance in Planning and Scheduling covers many industries, including clothing, steel, machine tools, paper/board, and the automobile industry. Using international case studies from various manufacturing industries, they highlight the fact that the human scheduler is a pivotal element in the scheduling process. Each section of the book includes an introduction with an overview of the material to follow, clearly identifying themes, discussion points and highlights inter-connections between the authors' work.
Book Synopsis FiWi Access Networks by : Martin Maier
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.
Book Synopsis Philosophy manual: a South-South perspective by : Chanthalangsy, Phinith
Download or read book Philosophy manual: a South-South perspective written by Chanthalangsy, Phinith and published by UNESCO Publishing. This book was released on 2014-12-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Stream Mining by : Albert Bifet
Download or read book Adaptive Stream Mining written by Albert Bifet and published by IOS Press. This book was released on 2010 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a significant contribution to the subject of mining time-changing data streams and addresses the design of learning algorithms for this purpose. It introduces new contributions on several different aspects of the problem, identifying research opportunities and increasing the scope for applications. It also includes an in-depth study of stream mining and a theoretical analysis of proposed methods and algorithms. The first section is concerned with the use of an adaptive sliding window algorithm (ADWIN). Since this has rigorous performance guarantees, using it in place of counters or accumulators, it offers the possibility of extending such guarantees to learning and mining algorithms not initially designed for drifting data. Testing with several methods, including Naïve Bayes, clustering, decision trees and ensemble methods, is discussed as well. The second part of the book describes a formal study of connected acyclic graphs, or 'trees', from the point of view of closure-based mining, presenting efficient algorithms for subtree testing and for mining ordered and unordered frequent closed trees. Lastly, a general methodology to identify closed patterns in a data stream is outlined. This is applied to develop an incremental method, a sliding-window based method, and a method that mines closed trees adaptively from data streams. These are used to introduce classification methods for tree data streams.
Book Synopsis Arctic Shipping by : Frédéric Lasserre
Download or read book Arctic Shipping written by Frédéric Lasserre and published by Routledge. This book was released on 2019-09-05 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book considers both the present state of Arctic shipping and possible future trends with reference to the various sectors of maritime transportation: cruise tourism, container traffic and bulk shipping. Ports are analysed as tools that support the strategies of coastal states to foster the development of resource extraction, enhance the attractiveness of Arctic shipping lanes and enable the control of maritime activities through coast guard deployment. The aim of this book is to draw a picture of the trends of Arctic shipping. How is traffic evolving in Canada’s Arctic, or along the Northern Sea Route? Are there significant differences between bulk and container shipping segments when considering the Arctic market? How are the ports and the hinterland developing and what are the strategies behind those? How is the legal framework shaping the evolution of maritime transportation? The contributors to this book consider all of these questions, and more, as they map out the prospects for Arctic shipping and analyse in detail the development of Arctic shipping as a result of multi-variable interactions. This book will be key reading for industry professionals and post-graduate students alike.
Book Synopsis Internet Histories by : Niels Brügger
Download or read book Internet Histories written by Niels Brügger and published by Routledge. This book was released on 2018-12-07 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2017, the new journal Internet Histories was founded. As part of the process of defining a new field, the journal editors approached leading scholars in this dynamic, interdisciplinary area. This book is thus a collection of eighteen short thought-provoking pieces, inviting discussion about Internet histories. They raise and suggest current and future issues in the scholarship, as well as exploring the challenges, opportunities, and tensions that underpin the research terrain. The book explores cultural, political, social, economic, and industrial dynamics, all part of a distinctive historiographical and theoretical approach which underpins this emerging field. The international specialists reflect upon the scholarly scene, laying out the field’s research successes to date, as well as suggest the future possibilities that lie ahead in the field of Internet histories. While the emphasis is on researcher perspectives, interviews with leading luminaries of the Internet’s development are also provided. As histories of the Internet become increasingly important, Internet Histories is a useful roadmap for those contemplating how we can write such works. One cannot write many histories of the 1990s or later without thinking of digital media – and we hope that Internet Histories will be an invaluable resource for such studies. This book was originally published as the first issue of the Internet Histories journal.
Book Synopsis CIKM'13 by : CIKM 13 Conference Committee
Download or read book CIKM'13 written by CIKM 13 Conference Committee and published by . This book was released on 2013-10-27 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: CIKM'13: 22nd ACM International Conference on Information and Knowledge Management Oct 27, 2013-Nov 01, 2013 San Francisco, USA. You can view more information about this proceeding and all of ACM�s other published conference proceedings from the ACM Digital Library: http://www.acm.org/dl.
Book Synopsis Signal Processing for Communications by : Paolo Prandoni
Download or read book Signal Processing for Communications written by Paolo Prandoni and published by Collection Savoir suisse. This book was released on 2008-06-17 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a novel, less classical approach to the subject, the authors have written a book with the conviction that signal processing should be taught to be fun. The treatment is therefore less focused on the mathematics and more on the conceptual aspects, the idea being to allow the readers to think about the subject at a higher conceptual level, thus building the foundations for more advanced topics. The book remains an engineering text, with the goal of helping students solve real-world problems. In this vein, the last chapter pulls together the individual topics as discussed throughout the book into an in-depth look at the development of an end-to-end communication system, namely, a modem for communicating digital information over an analog channel.
Author :International Energy Agency Publisher :Organization for Economic Co-Operation & Development ISBN 13 : Total Pages :720 pages Book Rating :4.:/5 (334 download)
Book Synopsis Energy Technology Perspectives 2010 by : International Energy Agency
Download or read book Energy Technology Perspectives 2010 written by International Energy Agency and published by Organization for Economic Co-Operation & Development. This book was released on 2010 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2010 edition of Energy Technology Perspectives examines the extent to which an energy technology revolution is taking place, the key technologies that are emerging, the costs and benefits of these technologies, and policies needed to foster their use. ETP 2010 presents updated scenarios from the present to 2050 that show which new technologies will be most important in key sectors and in different regions of the world. It highlights the importance of finance to achieve change, examines the implications of the scenarios for energy security and looks at how to accelerate the deployment of low-carbon technologies in major developing countries. It presents roadmaps and transition pathways for spurring deployment of the most important clean technologies and for overcoming existing barriers. With extensive data, projections and analysis, Energy Technology Perspectives 2010 provides decision makers with the detailed information and insights needed to accelerate the switch to a more secure, low-carbon energy future.
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:
Book Synopsis Handbook for Integrating Risk Analysis in the Economic Analysis of Projects by : Asian Development Bank
Download or read book Handbook for Integrating Risk Analysis in the Economic Analysis of Projects written by Asian Development Bank and published by . This book was released on 2002 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiming to support the development of a framework for the analysis of risk in project design and economic analysis, this handbook outlines technical approaches to modeling risk. Also summarized is the nature and practice of sensitivity analysis in dealing with uncertain outcomes as well as the principles to consider in typical risk analysis situations sector by sector. Case studies are included to demonstrate the application of quantitative risk analysis using actual Asian Development Bank projects to help improve project design and quality. Handbook users will learn to identify factors that are the key determinants of project outcomes, determine the likelihood of an individual project's returns being unacceptable, and design measures to mitigate the risks arising from the identified key factors.
Book Synopsis Good Governance and the European Union by : Deirdre Curtin
Download or read book Good Governance and the European Union written by Deirdre Curtin and published by Intersentia nv. This book was released on 2005 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book approaches the notion of good governance from three different angles. First it establishes whether it is a meaningful notion at all by taking a closer look at the parameters of good governance. Secondly, the authors look at the institutional translation of the criteria of good governance. In a third dimension, the concept may be analysed in relation to a number of substantive issues.
Book Synopsis The Second Century by : Matthias Holweg
Download or read book The Second Century written by Matthias Holweg and published by MIT Press (MA). This book was released on 2004 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the auto industry can replace obsolete strategies dating to Henry Ford's era with a system that reconnects customers to the value chain: a build-to-order model centered on process, product, and volume flexibility.
