Download or read book Un m canisme d ordonnancement distribue de taches temps r el written by Leila Baccouche and published by . This book was released on 1995 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le cadre du contrôle de l'exécution d'applications temps réel, un mécanisme d'ordonnancement de tâches basé sur le critère du temps est indispensable. Le mécanisme se doit de garantir en priorité les tâches périodiques et de maximiser le nombre de celles apériodiques. Le mécanisme d'ordonnancement distribué que nous proposons, traite d'abord l'allocation statique de tâches temps réel, car les tâches périodiques doivent être allouées et ordonnancées avant l'exécution. Nous avons développé un algorithme d'allocation parallèle basé sur l'approche des algorithmes génétiques. Il permet d'obtenir des allocations correctes ou le respect des contraintes temporelles qui portent sur les tâches est assure, en effet l'ordonnancement est pris en compte lors de la construction du placement. Dans le cas de systèmes temps réel souples, le mécanisme d'ordonnancement distribué met en oeuvre deux algorithmes afin de gérer l'ordonnancement et l'allocation des tâches durant l'exécution. Le premier est un algorithme d'ordonnancement local en-ligne, simple et peu coûteux. Le second est un algorithme d'allocation dynamique, indépendant de la taille et de la topologie du réseau. Il se distingue par une heuristique visant à donner davantage de garantie aux tâches apériodiques par l'acceptation de celles-ci et par le transfert de tâches moins urgentes. Une réservation de l'emplacement des tâches sur le processeur désigné pour l'allocation permet de ne pas remettre en cause l'ordonnancement auparavant établi. La mise en oeuvre de ces algorithmes dans le noyau ParX du système d'exploitation parallèle Paros, nous a permis de montrer qu'un mécanisme d'ordonnancement distribué améliore les performances d'une application temps réel.

Download or read book Un m canisme d Ordonnancement distribu de Taches temps r els A distributed scheduling mechanism of real time tasks written by L. Baccouche and published by . This book was released on 1995 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ordonnancement distribu temps r el s rialisable de t ches written by Soumaya Kamoun and published by . This book was released on 2000 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse traite du problème odits : ordonnancement distribué temps réel sérialisable. Son objectif est d'établir la faisabilité d'un jeu de tâches sporadiques distribuées soumises a des contraintes temps réel et partageant des objets modifiables persistants. Un jeu de tâches odits est dit faisable ssi il existe un ordonnancement satisfaisant les contraintes de cohérence des objets et les contraintes temps réel. Le problème est d'autant plus difficile que les tâches ont une structure en graphe. Cette thèse propose une approche générale de résolution du problème odits. Cette approche consiste, d'abord, a concevoir un ordonnancement en-ligne imposant une exécution sérialisable des tâches. Elle consiste, ensuite, a établir hors-ligne les conditions de faisabilité d'un jeu de tâches donné pour cet ordonnancement. Pour ce faire, cette thèse préconise une méthode novatrice basée sur (i) la caractérisation de l'ensemble des scénarios pires cas possibles et (ii) la modélisation de l'exécution de ces scénarios sous forme d'un graphe orienté value. Les temps de réponse pires cas sont obtenus par le calcul des plus longs chemins dans ce graphe. Les conditions de faisabilité en découlent. Deux solutions particulières sont dérivées de cette approche : l'une basée sur un ordonnancement périodique selon une séquence prédéfinie et l'autre basée sur un ordonnancement fifo. Pour chacune de ces solutions, les conditions de faisabilité nécessaires et suffisantes du jeu de tâches considéré sont établies. La complexité de ces conditions de faisabilité étant élevée, nous proposons des conditions de faisabilité de moindre complexité qui ne sont généralement que suffisantes. Cette thèse permet également d'aider le concepteur dans son choix du meilleur ordonnancement pour un jeu de tâches donné. Les résultats établis sont concrétisés par la réalisation de l'outil oodits qui se prononce sur la faisabilité d'un jeu de tâches pour les deux ordonnancements étudiés.

Download or read book Proceedings written by and published by . This book was released on 2000 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Treaty Series Recueil Des Traites written by United Nations and published by UN. This book was released on 2007-11-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modern Enterprise Data Pipelines written by Mike Bachman and published by . This book was released on 2021-06-25 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A Dell Technologies perspective on today's data landscape and the key ingredients for planning a modern, distributed data pipeline for your multicloud data-driven enterprise

Download or read book Real time Systems and Their Programming Languages written by Alan Burns and published by Addison Wesley Publishing Company. This book was released on 1990 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of real-time systems and the programming languages used in their development. Shows how modern real-time programming techniques are used in a wide variety of applications, including robotics, factory automation, and control. A critical requirement for such systems is that the software must

Download or read book United Nations Yearbook of the International Law Commission written by United Nations. International Law Commission and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

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.

Download or read book After Lean Production written by Thomas A. Kochan and published by Cornell University Press. This book was released on 1997 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial relations experts from eleven countries consider the state of the automobile industry worldwide.

Download or read book Complex Systems Engineering written by Shannon Flumerfelt and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art thought leadership on system complexity for aerospace and aviation, where breakthrough paradigms and strategies are sorely needed. The breadth of topics covered provide an enriched view of all types of systems-technical, machine, and human systems - to both practitioners and academics.

Download or read book How to Design Wastewater Systems for Local Conditions in Developing Countries written by David M. Robbins and published by IWA Publishing. This book was released on 2014-03-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.

Download or read book Statistical Inference for Ergodic Diffusion Processes written by Yury A. Kutoyants and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book in inference for stochastic processes from a statistical, rather than a probabilistic, perspective. It provides a systematic exposition of theoretical results from over ten years of mathematical literature and presents, for the first time in book form, many new techniques and approaches.

Download or read book The British Year Book of International Law written by and published by . This book was released on 1920 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semiparametric Theory and Missing Data written by Anastasios Tsiatis and published by Springer Science & Business Media. This book was released on 2007-01-15 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes current knowledge regarding the theory of estimation for semiparametric models with missing data, in an organized and comprehensive manner. It starts with the study of semiparametric methods when there are no missing data. The description of the theory of estimation for semiparametric models is both rigorous and intuitive, relying on geometric ideas to reinforce the intuition and understanding of the theory. These methods are then applied to problems with missing, censored, and coarsened data with the goal of deriving estimators that are as robust and efficient as possible.