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Contribution A Loptimisation Hierarchisee Des Grands Systemes Complexes
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Book Synopsis Contribution à l'optimisation hiérarchisée des grands systèmes complexes by : Assann Sidaoui
Download or read book Contribution à l'optimisation hiérarchisée des grands systèmes complexes written by Assann Sidaoui and published by . This book was released on 1992 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE PORTE SUR LA RESOLUTION DE PROBLEMES D'OPTIMISATION DES GRANDS SYSTEMES COMPLEXES. DEUX TYPES DE DIFFICULTES SONT ABORDES: DIFFICULTES DE CALCUL, ET DIFFICULTES LIEES A L'IMPRECISION DES MODELES QUI DECRIVENT LES SYSTEMES A OPTIMISER. ADOPTANT DES STRUCTURES HIERARCHISEES DE RESOLUTION, ON RAPPELLE TOUT D'ABORD LES PRINCIPES GENERAUX DE LA COMMANDE HIERARCHISEE. ENSUITE, ON PRESENTE UNE SYNTHESE DES PRINCIPALES METHODES DE DECOMPOSITION-COORDINATION EN UTILISANT L'APPROCHE POURSUITE D'OBJECTIFS. DES NOUVEAUX DEVELOPPEMENTS ALGORITHMIQUES QUI ENTRAINENT UNE AMELIORATION SENSIBLE DE L'EFFICACITE DES STRUCTURES DE RESOLUTION SONT EGALEMENT PRESENTES. CES DEVELOPPEMENTS SONT VALIDES EN ASSOCIATION AVEC DES STRUCTURES MULTI-NIVEAUX DE COORDINATION SUR UN PROBLEME DE GESTION D'UN SYSTEME HYDROTHERMIQUE. DANS LA SECONDE PARTIE DE L'ETUDE, ON DEVELOPPE DES STRUCTURES D'OPTIMISATION HIERARCHISEE QUI PRENNENT EN COMPTE L'IMPRECISION DES MODELES MATHEMATIQUES. UN NOUVEL ALGORITHME DE POURSUITE D'OBJECTIFS INTRODUISANT LA TECHNIQUE DE RETOURS D'INFORMATIONS A PARTIR DU SYSTEME REEL EST DEVELOPPE. ENSUITE, LES OUTILS DE LA LOGIQUE FLOUE SONT EMPLOYES POUR ELABORER UNE METHODOLOGIE D'OPTIMISATION DES SYSTEMES REPRESENTES PAR DES MODELES FLOUS
Book Synopsis Application des techniques avancées pour l'optimisation des systèmes complexes et incertains by : Slim Hammadi
Download or read book Application des techniques avancées pour l'optimisation des systèmes complexes et incertains written by Slim Hammadi and published by . This book was released on 1999 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contribution à l'optimisation des systèmes dynamiques by : Anton Mitsiouk
Download or read book Contribution à l'optimisation des systèmes dynamiques written by Anton Mitsiouk and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ces travaux présentent une méthode d'optimisation dynamique pour le contrôle optimal en génie des procédés. Plus généralement, ils s'inscrivent dans une thématique plus vaste, concernant l'optimisation des systèmes dynamiques hybrides. La méthode développée repose sur une méthode hybride entre deux méthodes directes : approches séquentielles et simultanées. Cette méthode nommée Méthode directe a tirs multiples, se caractérise par un découpage de l'horizon de temps en sous intervalles d'intégration et par une réduction de l'espace de recherche des fonctions de contrôle par une paramétrisation de ces dernières. Contrairement aux méthodes séquentielles, la méthode présentée permet de prendre en compte facilement des contraintes sur les variables d'état, ce qui représente une classe importante de problème en Génie des Procédés. De plus, la taille du problème d'optimisation reste acceptable car seules les fonctions de contrôle sont paramétrisées. Toutefois, ce problème d'optimisation est plus complexe que celui des approches séquentielles, à cause de la mise en oeuvre de contraintes de continuité (sur les variables d'état et de contrôle) entre les différents sous intervalles issus de la subdivisons du temps. Cette méthode est intégrée dans le noyau numérique de la plate forme PrODHyS. Son utilisation est illustrée au travers de trois exemples en génie des procédés
Book Synopsis Quelques Contributions À Des Systèmes Dynamiques Et Algorithmes Appliqués À L'optimisation by : Julien Munier
Download or read book Quelques Contributions À Des Systèmes Dynamiques Et Algorithmes Appliqués À L'optimisation written by Julien Munier and published by . This book was released on 2005 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contributions au domaine de l'optimisation (globale) non linéaire by : Mina Ouabiba
Download or read book Contributions au domaine de l'optimisation (globale) non linéaire written by Mina Ouabiba and published by . This book was released on 2005 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse aborde la résolution de problèmes d'optimisation sous contraintes et systèmes de contraintes non linéaires sur les réels. Dans un premier temps, nous sommes intéressés à l'optimisation de problèmes dont les données sont connues de façon implicite (résultats d'une simulation informatique), en particulier, dans le cas des systèmes à événements discrets. Les contraintes de la simulation nécessitent de choisir judicieusement les méthodes d'optimisation adaptées à cette démarche de simulation-optimisation. Il est nécessaire d'utiliser des méthodes d'optimisation itératives où la fonction objectif est calculée point par point. Cette étude a donné naissance à l’environnement SimOpt qui consiste à coopérer entre un environnement de simulation et un environnement d’optimisation mathématique constitué d’un ensemble de méthodes d’analyse numérique et de recherche opérationnelle. Ensuite, Nous avons étudié les problèmes d'optimisation globale non linéaires continus basés sur la satisfaction de contraintes et l'arithmétique des intervalles. Dans ce cas, le résultat du calcul est un intervalle qui contient les solutions. Notre contribution consiste d'abord à classifier les techniques de résolution et établir les différentes relations de décomposition et transformation d'un problème d'optimisation dans un processus de résolution. Finalement, la dernière partie est consacrée à la résolution de systèmes de contraintes non linéaires. Nous avons proposé une méthode basée sur une approche symbolique numérique qui permet de limiter le problème de localité des raisonnements dans le processus de résolution basé sur les techniques de consistance locale.
Book Synopsis Hierarchy in Natural and Social Sciences by : Denise Pumain
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.
Book Synopsis Mathematical and Intelligent Models in System Simulation by :
Download or read book Mathematical and Intelligent Models in System Simulation written by and published by . This book was released on 1991 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Duality of Technology: Rethinking the Concept of Technology in Organizations by : Wanda J. Orlikowski
Download or read book The Duality of Technology: Rethinking the Concept of Technology in Organizations written by Wanda J. Orlikowski and published by . This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis System Architecture and Complexity by : Jacques Printz
Download or read book System Architecture and Complexity written by Jacques Printz and published by John Wiley & Sons. This book was released on 2020-07-16 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emergence of a true systemic science - the systemic one - capable of rigorously addressing the many problems posed by the design and management of the evolution of modern complex systems is therefore urgently needed if wants to be able to provide satisfactory answers to the many profoundly systemic challenges that humanity will have to face at the dawn of the third millennium. This emergence is of course not easy because one can easily understand that the development of the systemic is mechanically confronted with all the classical disciplines which can all pretend to bring part of the explanations necessary to the understanding of a system and which do not naturally see a good eye a new discipline claim to encompass them in a holistic approach ... The book of Jacques Printz is therefore an extremely important contribution to this new emerging scientific and technical discipline: it is indeed first of all one of the very few "serious" works published in French and offering a good introduction to the systemic. It gives an extremely broad vision of this field, taking a thread given by the architecture of systems, in other words by the part of the systemic that is interested in the structure of systems and their design processes, which allows everyone to fully understand the issues and issues of the systemic. We can only encourage the reader to draw all the quintessence of the masterful work of Jacques Printz which mixes historical reminders explaining how the systemic emerged, introduction to key concepts of the systemic and practical examples to understand the nature and the scope of the ideas introduced.
Book Synopsis Recent Advances in Global Optimization by : Christodoulos A. Floudas
Download or read book Recent Advances in Global Optimization written by Christodoulos A. Floudas and published by Princeton University Press. This book was released on 2014-07-14 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will present the papers delivered at the first U.S. conference devoted exclusively to global optimization and will thus provide valuable insights into the significant research on the topic that has been emerging during recent years. Held at Princeton University in May 1991, the conference brought together an interdisciplinary group of the most active developers of algorithms for global optimization in order to focus the attention of the mathematical programming community on the unsolved problems and diverse applications of this field. The main subjects addressed at the conference were advances in deterministic and stochastic methods for global optimization, parallel algorithms for global optimization problems, and applications of global optimization. Although global optimization is primarily a mathematical problem, it is relevant to several other disciplines, including computer science, applied mathematics, physical chemistry, molecular biology, statistics, physics, engineering, operations research, communication theory, and economics. Global optimization problems originate from a wide variety of mathematical models of real-world systems. Some of its applications are allocation and location problems and VLSI and data-base design problems. Originally published in 1991. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis African Doctorates in Mathematics by :
Download or read book African Doctorates in Mathematics written by and published by Lulu.com. This book was released on 2007 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a catalogue of over 2000 doctoral theses by Africans in all fields of mathematics, including applied mathematics, mathematics education and history of mathematics. The introduction contains information about distribution by country, institutions, period, and by gender, about mathematical density, and mobility of mathematicians. Several appendices are included (female doctorate holders, doctorates in mathematics education, doctorates awarded by African universities to non-Africans, doctoral theses by non-Africans about mathematics in Africa, activities of African mathematicians at the service of their communities). Paulus Gerdes compiled the information in his capacity of Chairman of the African Mathematical Union Commission for the History of Mathematics in Africa (AMUCHMA). The book contains a preface by Mohamed Hassan, President of the African Academy of Sciences (AAS) and Executive Director of the Academy of Sciences for the Developing World (TWAS). (383 pp.)
Download or read book Metaheuristics written by Patrick Siarry and published by Springer. This book was released on 2016-12-24 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metaheuristics exhibit desirable properties like simplicity, easy parallelizability, and ready applicability to different types of optimization problems. After a comprehensive introduction to the field, the contributed chapters in this book include explanations of the main metaheuristics techniques, including simulated annealing, tabu search, evolutionary algorithms, artificial ants, and particle swarms, followed by chapters that demonstrate their applications to problems such as multiobjective optimization, logistics, vehicle routing, and air traffic management. The authors are leading researchers in this domain, with considerable teaching and applications experience, and the book will be of value to industrial practitioners, graduate students, and research academics.
Book Synopsis Systems Engineering with SysML/UML by : Tim Weilkiens
Download or read book Systems Engineering with SysML/UML written by Tim Weilkiens and published by Elsevier. This book was released on 2011-08-29 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: UML, the Universal Modeling Language, was the first programming language designed to fulfill the requirement for "universality." However, it is a software-specific language, and does not support the needs of engineers designing from the broader systems-based perspective. Therefore, SysML was created. It has been steadily gaining popularity, and many companies, especially in the heavily-regulated Defense, Automotive, Aerospace, Medical Device and Telecomms industries, are already using SysML, or are plannning to switch over to it in the near future. However, little information is currently available on the market regarding SysML. Its use is just on the crest of becoming a widespread phenomenon, and so thousands of software engineers are now beginning to look for training and resources. This book will serve as the one-stop, definitive guide that provide an introduction to SysML, and instruction on how to implement it, for all these new users. SysML is the latest emerging programming language--250,000 estimated software systems engineers are using it in the US alone! The first available book on SysML in English Insider information! The author is a member of the SysML working group and has written sections of the specification Special focus comparing SysML and UML, and explaining how both can work together
Book Synopsis A Practical Guide to SysML by : Sanford Friedenthal
Download or read book A Practical Guide to SysML written by Sanford Friedenthal and published by Morgan Kaufmann. This book was released on 2009-08-25 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide to SysML: The Systems Modeling Language is a comprehensive guide to SysML for systems and software engineers. It provides an advanced and practical resource for modeling systems with SysML. The source describes the modeling language and offers information about employing SysML in transitioning an organization or project to model-based systems engineering. The book also presents various examples to help readers understand the OMG Systems Modeling Professional (OCSMP) Certification Program. The text is organized into four parts. The first part provides an overview of systems engineering. It explains the model-based approach by comparing it with the document-based approach and providing the modeling principles. The overview of SYsML is also discussed. The second part of the book covers a comprehensive description of the language. It discusses the main concepts of model organization, parametrics, blocks, use cases, interactions, requirements, allocations, and profiles. The third part presents examples that illustrate how SysML supports different model-based procedures. The last part discusses how to transition and deploy SysML into an organization or project. It explains the integration of SysML into a systems development environment. Furthermore, it describes the category of data that are exchanged between a SysML tool and other types of tools, and the types of exchange mechanisms that can be used. It also covers the criteria that must be considered when selecting a SysML. Software and systems engineers, programmers, IT practitioners, experts, and non-experts will find this book useful. *The authoritative guide for understanding and applying SysML *Authored by the foremost experts on the language *Language description, examples, and quick reference guide included
Book Synopsis The Origin of Clay Minerals in Soils and Weathered Rocks by : Bruce B. Velde
Download or read book The Origin of Clay Minerals in Soils and Weathered Rocks written by Bruce B. Velde and published by Springer Science & Business Media. This book was released on 2008-07-18 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of huge relevance in a number of fields, this is a survey of the different processes of soil clay mineral formation and the consequences of these processes concerning the soil ecosystem, especially plant and mineral. Two independent systems form soil materials. The first is the interaction of rocks and water, unstable minerals adjusting to surface conditions. The second is the interaction of the biosphere with clays in the upper parts of alteration profiles.
Book Synopsis Faecal Sludge Management by : Linda Strande
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Book Synopsis Embedded System Design by : Peter Marwedel
Download or read book Embedded System Design written by Peter Marwedel and published by Springer Science & Business Media. This book was released on 2010-11-16 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until the late 1980s, information processing was associated with large mainframe computers and huge tape drives. During the 1990s, this trend shifted toward information processing with personal computers, or PCs. The trend toward miniaturization continues and in the future the majority of information processing systems will be small mobile computers, many of which will be embedded into larger products and interfaced to the physical environment. Hence, these kinds of systems are called embedded systems. Embedded systems together with their physical environment are called cyber-physical systems. Examples include systems such as transportation and fabrication equipment. It is expected that the total market volume of embedded systems will be significantly larger than that of traditional information processing systems such as PCs and mainframes. Embedded systems share a number of common characteristics. For example, they must be dependable, efficient, meet real-time constraints and require customized user interfaces (instead of generic keyboard and mouse interfaces). Therefore, it makes sense to consider common principles of embedded system design. Embedded System Design starts with an introduction into the area and a survey of specification models and languages for embedded and cyber-physical systems. It provides a brief overview of hardware devices used for such systems and presents the essentials of system software for embedded systems, like real-time operating systems. The book also discusses evaluation and validation techniques for embedded systems. Furthermore, the book presents an overview of techniques for mapping applications to execution platforms. Due to the importance of resource efficiency, the book also contains a selected set of optimization techniques for embedded systems, including special compilation techniques. The book closes with a brief survey on testing. Embedded System Design can be used as a text book for courses on embedded systems and as a source which provides pointers to relevant material in the area for PhD students and teachers. It assumes a basic knowledge of information processing hardware and software. Courseware related to this book is available at http://ls12-www.cs.tu-dortmund.de/~marwedel.
