Download or read book Ordonnancement avance retard sur machines parall les written by Yasmin A. Rios Solis and published by . This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ordonnancement avance-retard sur machines parallèles La problématique de cette thèse est ``l'ordonnancement avance-retard’’ : les tâches doivent s'exécuter sur des machines, de telle sorte à minimiser la somme des coûts d'avance et de retard. Ce type de problème est souvent NP-difficile. Nous définissons un nouveau voisinage de taille exponentielle et proposons un algorithme de programmation dynamique pour déterminer le meilleur ordonnancement du voisinage. Ainsi, une borne supérieure est obtenue pour le cas à une seule date d'échéance commune restrictive. En résolvant en temps polynomial un problème d'ordonnancement pour lequel les tâches ont des coûts de position, nous proposons une borne inférieure au problème d'ordonnancement juste-à-temps sur machines parallèles identiques. Finalement, nous proposons une méthode exacte basée sur la relaxation continue de reformulations convexes d'un programme quadratique en 0-1 sous contraintes linéaires.
Download or read book Probl mes d ordonnancement avance retard avec et sans pr emption written by Nina Runge and published by . This book was released on 2008 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les problèmes d'ordonnancement juste-à-temps sur une machine modélisent des problèmes rencontrés dans beaucoup de domaines différents comme la fabrication industrielle ou les processus informatiques. Comme la problématique de ces problèmes est fortement inspirée des besoins de l'industrie, nous proposons des extensions qui permettent de prendre encore mieux en compte les caractéristiques spécifiques de certains problèmes. Plus précisément, dans un premier temps, nous examinons les problèmes dans lesquels les interruptions des tâches sont permises et ensuite, nous introduisons la notion de livraison. Comme les problèmes que nous considérons sont NP-difficiles, nous proposons des algorithmes exacts et des heuristiques. Pour les problèmes préemptifs, la fonction objectif non-préemptif ne peut pas être appliquée. Dans ce contexte, nous étudions un modèle préemptif existant et proposons une borne inférieure, une heuristique ainsi qu'un algorithme exact. Le cas particulier du problème ordonnancement préemptif autour d'une date d'échéance commune est examiné séparément. Nous présentons également un nouveau modèle préemptif avec dates d'échéance distinctes pour lequel un nouvel algorithme de timing et un algorithme de recherche locale permettent de calculer des solutions pour des instances de grande taille plus rapidement. Finalement, nous considérons une extension qui consiste à introduire la notion de dates de livraison. Pour ce nouveau modèle, nous présentons deux bornes inférieures et un algorithme de recherche locale.
Download or read book M taheuristiques pour l ordonnancement multicrit re et les probl mes de transport written by JARBOUI Bassem and published by Lavoisier. This book was released on 2013-05-01 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pour assurer une production de biens de qualité, de manière fiable et dans des délais maîtrisés, les organisations ont besoin d’outils d'exécution optimale de tâches tels que l’ordonnancement. Le succès des méthodologies de résolution des problèmes d’ordonnancement de production basées sur les métaheuristiques s’explique par leur capacité à fournir des solutions proches de l’optimum, dans des temps raisonnables. Cet ouvrage se consacre, dans un premier temps, aux métaheuristiques appliquées aux problèmes d’ordonnancement multicritère, qui sont des cas particuliers des problèmes d’optimisation combinatoire multicritère, généralement NP-difficiles. Puis, il s’intéresse aux préoccupations d’ordonnancement dans le secteur du transport qui suscitent également de multiples problèmes d’optimisation. Deux grands domaines d’application se distinguent, celui des systèmes de transport et celui des ressources de transport intervenant dans un atelier.
Download or read book Ordonnancement sur machines parall les written by David Savourey and published by . This book was released on 2006 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nous étudions quatre problèmes d'ordonnancement sur machines parallèles. Ces quatre problèmes diffèrent par le critère que l'on cherche à minimiser: la somme des dates de fin, la somme pondérée des dates de fin, le retard total ou le retard total pondéré. Les jobs à ordonnancer sont soumis à des dates de disponibilité. Nous avons proposé pour ces quatre problèmes plusieurs règles de dominance. Une étude des bornes inférieures a également été réalisée. Enfin, nous avons proposé une méthode de résolution exacte utilisant les règles de dominance ainsi que les bornes inférieures.
Download or read book Demand Driven Material Requirements Planning DDMRP written by Carol Ptak and published by Industrial Press. This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An intuitive proven planning and execution method for today's complex and volatile supply chains"--Cover.
Download or read book RAIRO written by and published by . This book was released on 2001 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt: International journal devoted to pure and applied research on the use of scientific methods and information processing in business and industry. Articles may be in English or French.
Download or read book Max Weber and Karl Marx written by Karl Lowith and published by Routledge. This book was released on 2002-11-01 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2004. Lowith's study of Max Weber and Karl Marx is a key text in modem interpretations of the theme of alienation in Marxist theory and rationalisation in Weber's sociology. It remains the best short student introduction to the differences and comparisons between these essential thinkers. This new edition includes a Preface by Professor Bryan S. Turner which demonstrates the relevance of the book for contemporary sociology.
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.
Download or read book In Vessel Melt Retention and Ex Vessel Corium Cooling IAEA Tecdoc No 1906 written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2020-08-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.
Download or read book The Artificial and the Natural written by Bernadette Bensaude-Vincent and published by MIT Press. This book was released on 2007 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: These essays - written by specialists of different periods and various disciplines - reveal that the division between nature and art has been continually challenged and reassesed in Western thought. Nature and art, the essays suggest, are mutually constructed, defining and redifining themselves.
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.
Download or read book Orlicky s Material Requirements Planning Third Edition written by Carol A. Ptak and published by McGraw Hill Professional. This book was released on 2011-06-05 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classic MRP work up-to-date with new information on supply chain synchronization Thoroughly revised, Orlicky’s Material Requirements Planning, Third Edition reviews the poor business results embedded in most of today’s business systems; discusses the core problems causing the results; presents and discusses an alternative pull structure for planning and controlling materials flow; and presents initial results from actual implementations. This new edition reveals the next evolutionary step for materials and supply chain synchronization in the modern manufacturing landscape. This update describes: A solution to a chronic MRP-related problem that plagues many manufacturers: shortages of materials, components that block the smooth flow of work through the plant A competitive edge through strategic lead time reductions Significant reductions in total inventory investment Significant increases in service levels This new edition helps companies tackle three pervasive problems: unacceptable inventory performance; unacceptable service level performance; and high related expenses and waste. New to This Edition: New section on manufacturing as the heart of the supply chain management, and specific challenges in the 21st century Covers supply chain management (SCM) and distribution requirements planning (DRP) Discusses the impact of Lean and the Toyota Production System Update of integration software Reviews the emergence of demand-driven strategies and the MRP “conflict” Introduces the new concept of ASR (Actively Synchronized Replenishment) and explains how to incorporate it into business processes Explains positioning and how Six Sigma can help achieve results In-depth discussion of buffers – how to size, maintain, and adjust them New chapter on using MRP tools across the supply chain to enable pull-based approaches New case studies which illustrating the techniques described in the book Comprehensive coverage: The Whole and Its Parts; Manufacturing as a Process; Inventory Management; Prerequisites of MRP 3.0; Traditional Methodology; MRP Logic; Keeping MRP Up to Date; Lot Sizing and Safety Stock; Data Requirements and Management; MRP 3.0; Traditional MRP in Today’s Environment; MRP 3.0 Component 1—Strategic Inventory Positioning; Component 2—Buffer Level Profiling; Component 3—Dynamic Buffer Maintenance; Component 4—Pull-Based Demand Generation; Component 5—Highly Visible and Collaborative Execution; Dynamic Buffer Level Profiling; ASR Demand Generation; Applications; Developing Valid Inputs; Making Outputs Useful; Demand Driven Philosophies and MRP; Engineer to Order Environments; Lessons of the Past; Present State; The Future of MRP 3.0
Download or read book A Phonetic Dictionary of the English Language written by Hermann Michaelis and published by . This book was released on 1913 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diary of an Oxygen Thief written by Anonymous and published by Simon and Schuster. This book was released on 2016-05-23 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hurt people hurt people. Say there was a novel in which Holden Caulfield was an alcoholic and Lolita was a photographer’s assistant and, somehow, they met in Bright Lights, Big City. He’s blinded by love. She by ambition. Diary of an Oxygen Thief is an honest, hilarious, and heartrending novel, but above all, a very realistic account of what we do to each other and what we allow to have done to us.
Download or read book Blasphemy Immorality and Anarchy written by Jerome Friedman and published by . This book was released on 1987 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics of Information Technology written by Neil Gershenfeld and published by Cambridge University Press. This book was released on 2000-10-16 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Information Technology explores the familiar devices that we use to collect, transform, transmit, and interact with electronic information. Many such devices operate surprisingly close to very many fundamental physical limits. Understanding how such devices work, and how they can (and cannot) be improved, requires deep insight into the character of physical law as well as engineering practice. The book starts with an introduction to units, forces, and the probabilistic foundations of noise and signalling, then progresses through the electromagnetics of wired and wireless communications, and the quantum mechanics of electronic, optical, and magnetic materials, to discussions of mechanisms for computation, storage, sensing, and display. This self-contained volume will help both physical scientists and computer scientists see beyond the conventional division between hardware and software to understand the implications of physical theory for information manipulation.
Download or read book The Mark of the Sacred written by Jean-Pierre Dupuy and published by Stanford University Press. This book was released on 2013-10-30 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study of religion and violence “forces us to reexamine some of our most cherished self-images of modern liberal democratic societies” (Charles Taylor). Jean-Pierre Dupuy, prophet of what he calls “enlightened doomsaying,” has long warned that modern society is on a path to self-destruction. In this book, he pleads for a subversion of this crisis from within, arguing that it is our lopsided view of religion and reason that has set us on this course. In denial of our sacred origins and hubristically convinced of the powers of human reason, we cease to know our own limits: our disenchanted world leaves us defenseless against a headlong rush into the abyss of global warming, nuclear holocaust, and the other catastrophes that loom on our horizon. Reviving the religious anthropology of Max Weber, Emile Durkheim, and Marcel Mauss and in dialogue with the work of René Girard, Dupuy shows that we must remember the world’s sacredness in order to keep human violence in check. A metaphysical and theological detective, he tracks the sacred in the very fields where human reason considers itself most free from everything it judges irrational: science, technology, economics, political and strategic thought. In making such claims, The Mark of the Sacred takes on religion bashers, secularists, and fundamentalists at once. Written by one of the deepest and most versatile thinkers of our time, it militates for a world where reason is no longer an enemy of faith. “The Mark of the Sacred is one of those rare books . . . which, in an enlightened well-organized state, should be printed and freely distributed in all schools!” —Slavoj Žižek
