Download or read book Optimisation du temps de transport dans un atelier flexible de fabrication written by Karem Dhouib and published by . This book was released on 1990 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mod les math matiques pour une gestion efficace des ateliers flexibles written by Marino Widmer and published by EPFL Press. This book was released on 1991-01-01 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book tude sur l optimisation dynamique du calendrier des op rations dans un atelier flexible de fabrication written by Riadh Azouzi and published by . This book was released on 1990 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution la conception et l optimisation des syst mes de transport et de production written by Ouajdi Korbaa and published by . This book was released on 2003 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nous nous intéressons dans ce travail aux systèmes à événements discrets en général et aux systèmes de production flexible plus particulièrement. Dans ce contexte, nous parcourons l'ensemble des phases nécessaires pour son exploitation depuis la planification jusqu'à la commande finale. Nous avons opté pour une commande cyclique afin de réduire la combinatoire inhérente à l'ordonnancement de l'ensemble des opérations à réaliser. De plus, grâce à des travaux en colJaboration avec l'équipe de surveillance, nous nous sommes intéressés à l'observation de cette commande cyclique. Cette opération à été choisie de manière à ne pas instrumentaliser le système (pas d'ajout de capteur dans l'atelier). Dans ce cas, nous réalisons une surveillance indirecte par le flux qui prend toute son efficacité dans le choix de l'ordonnancement cyclique (périodes courtes) et pennet de diagnostiquer les causes des retards dans les sorties des pièces. Par la suite, nous avons souhaité justifier, a posteriori, certaines hypothèses émises lors de J'optimisation du systèmes (systèmes de transport non critique et en-cours illimité). Ceci nous a poussé à étudier la phase de conception des ateliers de production afin d'obtenir des configurations adaptées aux productions à réaliser. Ces champs d'étude de la conception et l'optimisation des systèmes de production ont, par la suite, été élargis aux systèmes de transport et logistique à travers des contrats industriels avec des partenaires régionaux.
Download or read book Conception et exploitation des syst mes flexibles de production manufacturi re written by Imen Chaieb and published by . This book was released on 2002 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deux parties sont développées dans ce mémoire : primo, la conception de systèmes de transport, et plus particulièrement, une étape intermédiaire du processus de conception, qui porte le nom d'agencement intracellulaire des machines, secundo, l'exploitation des SFPM avec prise en compte des tâches de transport. Le but de la première partie est de fournir un agencement de machines qui soit approprié à une production donnée et qui minimise les temps de transport. Nous avons ensuite pris en compte différents types de flexibilité du système de transport et du système de production : flexibilité des gammes opératoires, multiplicité des ressources de transformation, et installation de raccourcis dans les cellules de fabrication. Nous avons fourni, pour chaque type de flexibilité, une méthode de résolution, et développé un algorithme dans le but de résoudre le problème d'agencement pour des systèmes de production et de transports flexibles. La deuxième partie a pour objectif d'élaborer une commande prévisionnelle, déterministe et cyclique des SFPM. D'abord, nous fournissons une approche de résolution hiérarchisée afin de résoudre le problème de planification fine dont une formulation théorique a été fournie par H. Camus. En transformant le problème multicritères en un problème mono-critère, il devient possible de le résoudre. Le critère retenu pendant cette étape consiste en une minimisation du temps total de production. Puis, nous introduisons les durées des opérations de transport lors de la linéarisation des gammes et la formation des regroupements cycliques. Sous la contrainte du respect du temps de cycle déjà optimisé pendant la planification fine de la production, le critère de la minimisation de la borne inférieure d'en-cours est retenu est celui de la minimisation de la borne inférieure d'en-cours. Nous présentons à la fin une heuristique d'ordonnancement des tâches de transport. Le critère étant le nombre d'en-cours dans le système.
Download or read book Gestion en temps r el d atelier flexible written by Bernard Froment and published by . This book was released on 1988 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proposition d'un modèle capable d'optimiser le fonctionnement d'un système de production en respectant les contraintes organisationnelles imposées par la fonction gestion, dans le cadre des ateliers flexibles de mécanique générale
Download or read book Production of Yellow Cake and Uranium Fluorides written by International Atomic Energy Agency and published by . This book was released on 1980 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hierarchy in Natural and Social Sciences written by Denise Pumain and published by Springer Science & Business Media. This book was released on 2006-02-09 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hierarchy is a form of organisation of complex systems that rely on or produce a strong differentiation in capacity (power and size) between the parts of the system. It is frequently observed within the natural living world as well as in social institutions. According to the authors, hierarchy results from random processes, follows an intentional design, or is the result of the organisation which ensures an optimal circulation of energy for information. This book reviews ancient and modern representations and explanations of hierarchies, and compares their relevance in a variety of fields, such as language, societies, cities, and living species. It throws light on concepts and models such as scaling laws, fractals and self-organisation that are fundamental in the dynamics and morphology of complex systems. At a time when networks are celebrated for their efficiency, flexibility and better social acceptance, much can be learned about the persistent universality and adaptability of hierarchies, and from the analogies and differences between biological and social organisation and processes. This book addresses a wide audience of biologists and social scientists, as well as managers and executives in a variety of institutions.
Download or read book Recent Advances in Integrated Design and Manufacturing in Mechanical Engineering written by Grigore Gogu and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent advances in the integration and the optimization of product design and manufacturing systems. The book is divided into 3 chapters corresponding to the following three main topics : - optimization of product design process (mechanical design process, mass customization, modeling the product representation, computer support for engineering design, support systems for tolerancing, simulation and optimization tools for structures and for mechanisms and robots), -optimization of manufacturing systems (multi-criteria optimization and fuzzy volumes, tooth path generation, machine-tools behavior, surface integrity and precision, process simulation), - methodological aspects of integrated design and manufacturing (solid modeling, collaborative tools and knowledge formalization, integrating product and process design and innovation, robust and reliable design, multi-agent approach in VR environment). The present book is of interest to engineers, researchers, academic staff, and postgraduate students interested in integrated design and manufacturing in mechanical engineering.
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 Recent Advances in Computational Terminology written by Didier Bourigault and published by John Benjamins Publishing. This book was released on 2001-06-15 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first collection of selected articles from researchers in automatic analysis, storage, and use of terminology, and specialists in applied linguistics, computational linguistics, information retrieval, and artificial intelligence offers new insights on computational terminology. The recent needs for intelligent information access, automatic query translation, cross-lingual information retrieval, knowledge management, and document handling have led practitioners and engineers to focus on automated term handling. This book offers new perspectives on their expectations. It will be of interest to terminologists, translators, language or knowledge engineers, librarians and all others dependent on the automation of terminology processing in professional practices. The articles cover themes such as automatic thesaurus construction, automatic term acquisition, automatic term translation, automatic indexing and abstracting, and computer-aided knowledge acquisition. The high academic standing of the contributors together with their experience in terminology management results in a set of contributions that tackle original and unique scientific issues in correlation with genuine applications of terminology processing.
Download or read book Computer Integrated Manufacturing written by Kiyoji Asai and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Current state of expectations is that Computer Integrated Manufacturing (CIM) will ulti mately determine the industrial growth of world nations within the next few decades. Computer Aided Design (CAD), Computer Aided Manufacturing (CAM), Flexible Manufacturing Systems (FMS), Robotics together with Knowledge and Information Based Systems (KIBS) and Com munication Networks are expected to develop to a mature state to respond effectively to the managerial requirements of the factories of the future that are becoming highly integrated and complex. CIM represents a new production approach which will allow the factories to deliver a high variety of products at a low cost and with short production cycles. The new technologies for CIM are needed to develop manufacturing environments that are smarter, faster, close-cou pled, integrated, optimized, and flexible. Sophistication and a high degree of specialization in materials science, artificial intelligence, communications technology and knowledge-information science techniques are needed among others for the development of realizable and workable CIM systems that are capable of adjusting to volatile markets. CIM factories are to allow the production of a wide variety of similar products in small batches through standard but multi mission oriented designs that accommodate flexibility with specialized software.
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 Decomposition Methods for Complex Factory Scheduling Problems written by Irfan M. Ovacik and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The factory scheduling problem, that of allocating machines to competing jobs in manufacturing facilities to optimize or at least improve system performance, is encountered in many different manufacturing environments. Given the competitive pressures faced by many companies in today's rapidly changing global markets, improved factory scheduling should contribute to a flrm's success. However, even though an extensive body of research on scheduling models has been in existence for at least the last three decades, most of the techniques currently in use in industry are relatively simplistic, and have not made use of this body of knowledge. In this book we describe a systematic, long-term research effort aimed at developing effective scheduling algorithms for complex manufacturing facilities. We focus on a speciflc industrial context, that of semiconductor manufacturing, and try to combine knowledge of the physical production system with the methods and results of scheduling research to develop effective approximate solution procedures for these problems. The class of methods we suggest, decomposition methods, constitute a broad family of heuristic approaches to large, NP-hard scheduling problems which can be applied in other environments in addition to those studied in this book.
Download or read book Le Nouvel automatisme written by and published by . This book was released on 1983 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neural Networks written by Gérard Dreyfus and published by Springer Science & Business Media. This book was released on 2005-11-25 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural networks represent a powerful data processing technique that has reached maturity and broad application. When clearly understood and appropriately used, they are a mandatory component in the toolbox of any engineer who wants make the best use of the available data, in order to build models, make predictions, mine data, recognize shapes or signals, etc. Ranging from theoretical foundations to real-life applications, this book is intended to provide engineers and researchers with clear methodologies for taking advantage of neural networks in industrial, financial or banking applications, many instances of which are presented in the book. For the benefit of readers wishing to gain deeper knowledge of the topics, the book features appendices that provide theoretical details for greater insight, and algorithmic details for efficient programming and implementation. The chapters have been written by experts and edited to present a coherent and comprehensive, yet not redundant, practically oriented introduction.
Download or read book Making Strategies in Spatial Planning written by Maria Cerreta and published by Springer Science & Business Media. This book was released on 2010-09-11 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This provocative collection of essays challenges traditional ideas of strategic s- tial planning and opens up new avenues of analysis and research. The diversity of contributions here suggests that we need to rethink spatial planning in several f- reaching ways. Let me suggest several avenues of such rethinking that can have both theoretical and practical consequences. First, we need to overcome simplistic bifurcations or dichotomies of assessing outcomes and processes separately from one another. To lapse into the nostalgia of imagining that outcome analysis can exhaust strategic planners’ work might appeal to academics content to study ‘what should be’, but it will doom itself to further irrelevance, ignorance of politics, and rationalistic, technocratic fantasies. But to lapse into an optimism that ‘good process’ is all that strategic planning requires, similarly, rests upon a ction that no credible planning analyst believes: that enough talk will miraculously transcend con ict and produce agreement. Neither sing- minded approach can work, for both avoid dealing with con ict and power, and both too easily avoid dealing with the messiness and the practicalities of negotiating out con icting interests and values – and doing so in ethically and politically critical ways, far from resting content with mere ‘compromise’. Second, we must rethink the sanctity of expertise. By considering analyses of planning outcomes as inseparable from planning processes, these accounts help us to see expertise and substantive analysis as being ‘on tap’, ready to put into use, rather than being particularly and technocratically ‘on top’.
