Download or read book APPORT DE L ANALYSE DE PERTURBATION POUR LE DIMENSIONNEMENT ET LE PILOTAGE DES SYSTEMES DE PRODUCTION written by NAOUFEL.. CHEIKHROUHOU and published by . This book was released on 2001 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TRAVAUX PRESENTES DANS CETTE THESE PORTENT SUR LE DIMENSIONNEMENT ET LE PILOTAGE DES SYSTEMES DE PRODUCTION A TRAVERS L'APPROCHE D'ANALYSE DE PERTURBATION. CONTRAIREMENT AUX TECHNIQUES USUELLES D'OPTIMISATION DES PERFORMANCES, QUI SE BASENT SUR DES HYPOTHESES SIMPLIFICATRICES ET AUTRES TECHNIQUES NUMERIQUES, GOURMANDES EN TEMPS DE CALCUL, LES DIFFERENTES APPROCHES D'ANALYSE DE PERTURBATION DEVELOPPEES DANS CETTE THESE REPOSENT SUR LA PREDICTION DES EVENEMENTS FUTURS DANS DES SYSTEMES PERTURBES PAR SIMPLE OBSERVATION D'UNE SEULE SIMULATION DU SYSTEME DYNAMIQUE A EVENEMENTS DISCRETS INITIAL. A TRAVERS CETTE PREDICTION, NOUS PROPOSONS UNE APPROCHE METHODOLOGIQUE D'OPTIMISATION STOCHASTIQUE. ELLE EST VALIDEE POUR LES LIGNES DE TRANSFERT ET LES SYSTEMES D'ASSEMBLAGE/DESASSEMBLAGE, D'UNE PART PAR DES ALGORITHMES DE DIMENSIONNEMENT DES CAPACITES DE STOCKAGE TAMPON ET D'AUTRE PART PAR DES ALGORITHMES D'ALLOCATION DES TEMPS DE SERVICE SUR LES RESSOURCES. DANS UNE DEUXIEME OPTIQUE, UNE POLITIQUE GENERALISEE DE PILOTAGE TEMPS REEL DES CELLULES DE PRODUCTION EST MISE EN UVRE A TRAVERS L'ANALYSE DE SENSIBILITE DE LA MESURE DE PERFORMANCE PAR L'ANALYSE DE PERTURBATION. LES PREUVES DE CONVERGENCE ET LES PROPRIETES STATISTIQUES DES ESTIMATEURS SONT DONNEES, SOUTENUES PAR LES DIFFERENTS RESULTATS NUMERIQUES.
Download or read book Intelligent Systems for Smart Cities written by Anand J. Kulkarni and published by Springer Nature. This book was released on 2024-01-02 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the 2nd International Conference on Intelligent Systems and Applications 2023. The theme of this conference is ‘Intelligent Systems for Smart Cities'. It covers the topics of intelligent systems in multiple aspects such as healthcare, supply chain and logistics, smart homes and smart structures, banking and finance, a sustainable environment, social media and cyber security, crime prevention, and disaster management. The book will be useful for researchers and professionals interested in the broad field of artificial intelligence and machine learning.
Download or read book International Journal of Production Economics written by and published by . This book was released on 2004 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pilotage des cellules adaptatives de production written by Christophe Sohier and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: La recherche d'adaptativité et de réactivité dans le pilotage des cellules de production implique la répartition de l'intelligence décisionnelle. Une corollaire en est la difficulté à maitriser et à optimiser la prise de décision en temps réel. Le but de ces travaux est d'étudier l'apport des systèmes multi-agents pour le pilotage des cellules adaptatives de production. L'intérêt de modéliser le système de pilotage par un systeme multi-agents est d'une part de construire le comportement de la cellule non plus par une approche fonctionnelle descendante, mais par un assemblage de comportements locaux, ce qui permet de décrire le fonctionnement d'un systeme complexe, alors qu'une description globale n'est pas forcement possible. Cela permet d'autre part de décrire le scenario de production sous la forme d'une succession d'états a obtenir, et non plus comme une séquence d'actions a réaliser, ce qui permet a la cellule de s'auto organiser en fonction des objectifs a obtenir et de l'état actuel de la cellule. Une population d'agents réactifs modélisant les comportements locaux est confrontée a des décisions multiplaces et conflictuelles et s'organise grâce a l'interaction de leur comportement afin d'obtenir un comportement global cohérent. Pour valider notre approche, nous l'avons applique au contrôleur de la cellule expérimentale de fraisage de LURPA. Deux exemples de production sur la cellule sont traités, une production dite normale permet de mettre en évidence le séquencement en temps réel des taches de la cellule et une production à statut prioritaire permet de mettre en évidence la capacité du contrôleur de cellule à réagir à cette perturbation, qu'est le lancement de cette production
Download or read book Contribution la gestion des perturbations dans les syst mes manufacturiers contraintes de temps written by Anis M'halla and published by . This book was released on 2010 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les travaux proposés dans cette thèse s'intéressent à la commande et la surveillance d'une classe particulière de systèmes de production : les systèmes manufacturiers à contraintes de temps de séjour. Nous supposons dans l'étude que les ressources ont déjà été affectées et que l'ordre des opérations est déjà fixé par le module de planification/ordonnancement. Les hypothèses de fonctionnement répétitif avec et sans postes d'assemblage sont adoptées. De manière assez classique pour ce type de problématique, le formalisme utilisé est celui des Réseaux de Petri P-temporels pour l'étude des instants de débuts et de fins des opérations.Une étude de la robustesse des ateliers manufacturiers à contraintes de temps a été développée. La robustesse est abordée avec et sans modification de la commande relative à la robustesse active et à la robustesse passive respectivement, face aux perturbations temporelles. Un algorithme de calcul d'une borne supérieure de la robustesse passive est présenté. De plus, trois stratégies de commande robuste face aux perturbations temporelles ont été développées.Par ailleurs, l'incertitude dans les systèmes de production manufacturière à été étudié. Notre contribution dans ce cadre porte sur l'intégration des résultats concernant la robustesse dans la génération de symptômes et la classification des comptes rendus associés aux différentes opérations en utilisant la logique floue.Partant d'un système commandé, nous avons présenté en détail une démarche à suivre pour la mise en œuvre d'un modèle de surveillance en se basant sur les chroniques et les arbres de défaillance flous. Cette démarche est appliquée à un atelier de production laitière.
Download or read book Evolutionary Algorithms in Engineering and Computer Science written by K. Miettinen and published by John Wiley & Sons. This book was released on 1999-07-09 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary Algorithms in Engineering and Computer Science Edited by K. Miettinen, University of Jyväskylä, Finland M. M. Mäkelä, University of Jyväskylä, Finland P. Neittaanmäki, University of Jyväskylä, Finland J. Périaux, Dassault Aviation, France What is Evolutionary Computing? Based on the genetic message encoded in DNA, and digitalized algorithms inspired by the Darwinian framework of evolution by natural selection, Evolutionary Computing is one of the most important information technologies of our times. Evolutionary algorithms encompass all adaptive and computational models of natural evolutionary systems - genetic algorithms, evolution strategies, evolutionary programming and genetic programming. In addition, they work well in the search for global solutions to optimization problems, allowing the production of optimization software that is robust and easy to implement. Furthermore, these algorithms can easily be hybridized with traditional optimization techniques. This book presents state-of-the-art lectures delivered by international academic and industrial experts in the field of evolutionary computing. It bridges artificial intelligence and scientific computing with a particular emphasis on real-life problems encountered in application-oriented sectors, such as aerospace, electronics, telecommunications, energy and economics. This rapidly growing field, with its deep understanding and assesssment of complex problems in current practice, provides an effective, modern engineering tool. This book will therefore be of significant interest and value to all postgraduates, research scientists and practitioners facing complex optimization problems.
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book The Use of Pilot Rating in the Evaluation of Aircraft Handling Qualities written by George E. Cooper and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Product Life Cycle Management written by Max Giordano and published by John Wiley & Sons. This book was released on 2012-12-17 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.
Download or read book Multi Objective Memetic Algorithms written by Chi-Keong Goh and published by Springer Science & Business Media. This book was released on 2009-02-26 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of sophisticated evolutionary computing approaches for solving complex problems with multiple conflicting objectives in science and engineering have increased steadily in the recent years. Within this growing trend, Memetic algorithms are, perhaps, one of the most successful stories, having demonstrated better efficacy in dealing with multi-objective problems as compared to its conventional counterparts. Nonetheless, researchers are only beginning to realize the vast potential of multi-objective Memetic algorithm and there remain many open topics in its design. This book presents a very first comprehensive collection of works, written by leading researchers in the field, and reflects the current state-of-the-art in the theory and practice of multi-objective Memetic algorithms. "Multi-Objective Memetic algorithms" is organized for a wide readership and will be a valuable reference for engineers, researchers, senior undergraduates and graduate students who are interested in the areas of Memetic algorithms and multi-objective optimization.
Download or read book Aircraft Handling Qualities written by MS. John Hodgkinson and published by Wiley-Blackwell. This book was released on 1999 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a readable introduction to handling qualities, the combination of pilot acceptability and piloted performance with stability and control. It adopts the analytical and qualitative standpoints needed for handling qualities analysis and design of fixed-wing aircraft. Although there are several texts on stability and control, until now none has provided insight into the piloting concerns that have affected the success of recent fly-by-wire aircraft developments.
Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
Download or read book Water Resources in the Mediterranean Region written by Mehrez Zribi and published by Elsevier. This book was released on 2020-06-14 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Resources in the Mediterranean Region summarizes and collates scientific developments around water resources in the Mediterranean socio-economic environment through a multidisciplinary framework synthesizing hydrology, hydrogeology, climate, bioclimatology, economics, and geography. As such, it provides essential information for any reader looking to learn more about the Mediterranean which is experiencing the impact of climate change and concurrent complex issues of anthropogenic effects, especially in agriculture and other resource uses. Water Resources in the Mediterranean Region covers different challenges in the issue of the evolution of water resources in the Mediterranean. It is intended for PhD students, research scientists, and managers interested in new solutions and approaches for water management and in the forecast of future water dynamics. Offers multidisciplinary content providing global visions of the challenges faced in the Mediterranean region Presents fundamental and operational studies, providing the reader with information on how to implement these actions and results themselves Written in a pedagogical manner, allowing for ease of reading for both researchers and water managers
Download or read book Fundamentals of Fighter Design written by Ray Whitford and published by Crowood Press (UK). This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traces the development of fighter design from World War One to the present day. Covers aerodynamics, stability and control, propulsion, structures and materials, avoinics, armaments and tactics. The drawings and charts make this an informative book for enthusiasts and those with a professional interest in aircraft design.
Download or read book Introduction to Tourism written by Leonard J Lickorish and published by Routledge. This book was released on 2007-06-01 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Tourism is the essential guide to the tourism industry. It provides a comprehensive and authoritative introduction to all facets of tourism including: the history of tourism; factors influencing the tourism industry; tourism in developing countries; sustainable tourism; forecasting future trends. Tourism has changed radically in recent years with the onset of many technological and economic changes and an ever increasing concern for the environment. This book provides a down-to-earth introduction to this complex and multi-faceted industry. This invaluable introduction is written for all students of tourism and all those involved in the industry who want to know more about the structure, component activities and environment within which they work.
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Download or read book Project Scheduling written by Erik Leuven Demeulemeester and published by Springer Science & Business Media. This book was released on 2002-06-30 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: Project management can be broadly defined as the process of managing, allocating and timing resources to achieve given objectives in an efficient and expedient manner. The objectives of the book cover three areas: classification; procedures; and problems.
