Download or read book ENVIRONNEMENT ORIENTE OBJET DE MODELISATION ET DE SIMULATION A EVENEMENTS DISCRETS DE SYSTEMES COMPLEXES written by ANTOINE.. AIELLO and published by . This book was released on 1997 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: UNE ETAPE MAJEURE DANS L'ANALYSE ET LA CONCEPTION DE SYSTEMES CONCERNE L'ELABORATION DE MODELES. UN MODELE EST UNE REPRESENTATION SIMPLIFIEE DE LA STRUCTURE ET DU COMPORTEMENT D'UN SYSTEME, QUI PERMET D'ANTICIPER ET D'ANALYSER LES REACTIONS DE SYSTEMES EXISTANTS, MAIS AUSSI DE CONCEVOIR ET DE TESTER DES SYSTEMES EN COURS DE CONCEPTION. L'ANALYSE, LA CONCEPTION ET LE TEST DE CES SYSTEMES REPOSENT SUR UN PROCESSUS DE SIMULATION QUI A POUR OBJECTIF LA GENERATION DE RESULTATS DEVANT SE RAPPROCHER LE PLUS POSSIBLE DES REPONSES DU SYSTEME ETUDIE. DIFFERENTS TRAVAUX DE RECHERCHE ONT PERMIS DE DEVELOPPER DES OUTILS DE MODELISATION ET DE SIMULATION PERFORMANTS MAIS NEANMOINS LIES A DES DOMAINES D'APPLICATION SPECIFIQUES. AU TERME DE CE CONSTAT NOUS AVONS DECIDE D'APPORTER UNE CONTRIBUTION A L'ELABORATION D'UN ENVIRONNEMENT GENERAL DE MODELISATION ET DE SIMULATION DESTINE A PRENDRE EN COMPTE DES SYSTEMES ISSUS DE DOMAINES DIFFERENTS. CE MEMOIRE PRESENTE UNE APPROCHE BASEE SUR UNE SEPARATION EXPLICITE ENTRE LES PHASES DE MODELISATION ET DE SIMULATION. LA PHASE DE MODELISATION EST ELABOREE A PARTIR DES NOTIONS DE HIERARCHISATION ET DE MODELES MULTIVUES PERMETTANT D'INTRODUIRE LA COMPLEXITE D'UN SYSTEME DE FACON PROGRESSIVE. LA PHASE DE SIMULATION REPOSE POUR SA PART SUR UNE METHODOLOGIE A EVENEMENTS DISCRETS GENERIQUE, OFFRANT LA POSSIBILITE DE CREER AUTOMATIQUEMENT LES SIMULATEURS CORRESPONDANT AUX MODELES ETUDIES. CES TRAVAUX ONT ETE REALISES A PARTIR DE CONCEPTS ISSUS DE LA THEORIE DES OBJETS, OFFRANT AINSI LA POSSIBILITE D'ELABORER UN ENVIRONNEMENT EVOLUTIF. LA VALIDATION DE NOTRE APPROCHE EST MISE EN OEUVRE A TRAVERS L'ETUDE DE DEUX PROBLEMES APPARTENANT A DES DOMAINES D'APPLICATION DIFFERENTS.

Download or read book Approche de mod lisation et de simulation orient e objet de syst mes complexes written by Paul-Antoine Bisgambiglia and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book METHODE ET OUTILS LOGICIELS DE MODELISATION PAR OBJETS POUR LA SIMULATION ET L ANIMATION DE SYSTEMES COMPLEXES written by DAVID.. HILL and published by . This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE DANS CE MEMOIRE CONCERNE A LA FOIS LE GENIE LOGICIEL ET LA MODELISATION. L'OUTIL DE MODELISATION UTILISE EST LA SIMULATION A EVENEMENTS DISCRETS. LE PREMIER AXE DE RECHERCHE DE NOTRE TRAVAIL ABOUTIT A LA PROPOSITION D'UNE METHODE D'ANALYSE ET DE CONCEPTION PAR OBJETS POUR LA MODELISATION DE SYSTEMES A FLUX DISCRETS. CETTE METHODE DE MODELISATION PAR OBJETS APPELEE M2PO REPREND LES INVARIANTS ELEMENTAIRES DES METHODES EXISTANTES ASSOCIES AUX TACHES PROPRES A UNE ETUDE PAR SIMULATION D'UN SYSTEME COMPLEXE. LE DEUXIEME AXE DE RECHERCHE UTILISE LA METHODE M2PO POUR ABORDER LES TECHNIQUES GRAPHIQUES DE VERIFICATION ET DE VALIDATION DES MODELES DE SIMULATION. PARMI TOUTES LES TECHNIQUES EXISTANTES NOUS INVESTISSONS DANS LES TECHNIQUES D'ANIMATION GRAPHIQUE DE MODELES PAR OBJETS QUI PEUVENT ETRE UTILISEES AVEC EFFICACITE POUR LA MISE AU POINT DES MODELES ET DES PROGRAMMES DE SIMULATION. NOUS ABORDONS EGALEMENT LA PROGRAMMATION VISUELLE EN AUTORISANT LA GENERATION AUTOMATIQUE DE CODE DE SIMULATION A PARTIR D'UNE SAISIE D'OBJETS GRAPHIQUES. LES TECHNIQUES PROPOSEES SONT SUPPORTEES PAR UNE BOITE A OUTILS MULTI-DOMAINES NOMMEE GIGA ECRITE EN C++

Download or read book Mod lisation de l adaptation s mantique entre mod les de calcul written by Ayman Dogui and published by Presses Academiques Francophones. This book was released on 2014-03-12 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail traite de la modelisation de systemes complexes constitues de plusieurs composants impliquant des domaines techniques differents. Il se place dans le contexte de la modelisation heterogene hierarchique, selon l'approche a base de modeles de calcul. Chaque composant faisant appel a un domaine technique particulier, son comportement peut etre modelise selon un paradigme de modelisation approprie, avec une semantique differente de celle des autres composants. La modelisation du systeme global, qui integre les modeles heterogenes de ces composants, necessite donc une adaptation semantique permettant l'echange entre les divers sous-modeles. Ce travail propose une approche de modelisation de l'adaptation semantique ou les semantiques du temps et du controle sont explicitement specifiees par le concepteur en definissant des relations sur les occurrences d'evenements d'une part et sur les etiquettes temporelles de ces occurrences d'autre part. Cette approche est integree dans la plateforme ModHel'X et testee sur un cas d'etude: un modele de leve-vitre electrique.

Download or read book L APPROCHE ORIENTEE OBJET POUR LA MODELISATION DE SYSTEMES MATERIELS written by Bachir Djafri and published by . This book was released on 1999 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: DURANT CETTE DERNIERE DECENNIE, LES LANGAGES DE DESCRIPTION DE MATERIEL OU HDL (HARDWARE DESCRIPTION LANGUAGES), DONT LE LANGAGE STANDARD VHDL, ONT JOUE UN ROLE IMPORTANT DANS L'EXPLOSION DE LA CAO DANS L'INDUSTRIE ELECTRONIQUE ; ILS SONT AUJOURD'HUI LARGEMENT UTILISES PAR LES CONCEPTEURS DE SYSTEMES MATERIELS. DE NOUVELLES METHODES DE CONCEPTION DOIVENT CEPENDANT ETRE DEVELOPPEES POUR FAIRE FACE A LA COMPLEXITE CROISSANTE DES SYSTEMES MATERIELS, PERMETTRE UNE REUTILISATION DES MODELES ET REDUIRE LE TEMPS ET LE COUT DE CONCEPTION. PLUSIEURS TRAVAUX ET PUBLICATIONS ONT PROPOSE D'ETENDRE LE LANGAGE VHDL ET D'AJOUTER LES CONCEPTS OBJET POUR MAITRISER CETTE COMPLEXITE CROISSANTE ET AUGMENTER LE POUVOIR D'EXPRESSION DU LANGAGE. CETTE THESE PROPOSE D'INTRODUIRE LES TECHNIQUES OBJET DANS LA DESCRIPTION DE SYSTEMES MATERIELS EN ETUDIANT DEUX APPROCHES DIFFERENTES. LA PREMIERE CONSISTE A ETENDRE LE LANGAGE VHDL VERS UN LANGAGE ORIENTE OBJET. ELLE INTEGRE DANS LE LANGAGE LES CONCEPTS DE LA PROGRAMMATION OBJET TELS QUE LA NOTION DE CLASSE, L'HERITAGE, LE POLYMORPHISME ET LA COMMUNICATION PAR ENVOI DE MESSAGES. LA SECONDE VISE A ETENDRE UN LANGAGE ORIENTE OBJET (JAVA) VERS UN LANGAGE DE DESCRIPTION MATERIELLE. ELLE PERMET AINSI DE BENEFICIER DE TOUS LES OUTILS ET DE TOUTES LES METHODES OBJET DANS UNE PERSPECTIVE DE CONCEPTION MATERIELLE OU MATERIEL/LOGICIEL (CO-DESIGN).

Download or read book Une approche orient e objet dans la simulation des syst mes dynamiques semi continus written by SIRIKI.. TRAORE and published by . This book was released on 1994 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE ICI CONCERNE LA SIMULATION DES SYSTEMES HYBRIDES. IL S'AGIT PRINCIPALEMENT D'ETUDIER LA FAISABILITE D'UNE APPROCHE ORIENTEE OBJET A TRAVERS: 1) UNE REVUE DE L'ETAT DE L'ART, 2) UNE ETUDE APPROFONDIE DES DIFFERENTS PROBLEMES QUI SE POSENT DANS CETTE APPROCHE, 3) UNE PROPOSITION DE REALISATION, BASEE SUR UNE MAQUETTE COMPOSEE D'UN INTERPRETEUR DE DIALOGUE ORIENTE OBJET, RELIE AU SOLVEUR SIRENA. LA PREMIERE PARTIE EXPLICITE LA NOTION DE SYSTEMES DYNAMIQUES SEMI-CONTINUS EN REPLACANT CES SYSTEMES DANS LE CONTEXTE DES MODELES HABITUELLEMENT MANIPULES PAR LES AUTOMATICIENS (EQUATIONS DIFFERENTIELLES, TRANSFORMEES DE LAPLACE OU EN Z, GRAPHES D'ETAT, RESEAUX DE PETRI OU GRAFCET). LA SECONDE PARTIE ABORDE LES PROBLEMES DE FOND QU'IL EST NECESSAIRE DE RESOUDRE POUR ATTEINDRE L'OBJECTIF FIXE, A SAVOIR: 1) LES PROBLEMES DE STRUCTURATION DU MODELE DANS L'APPROCHE OBJET, 2) LES PROBLEMES LIES A L'ASPECT HYBRIDE ET EN PARTICULIER AUX CHANGEMENTS DE STRUCTURE DU MODELE CONTINU, INDUITS PAR L'EVOLUTION DE LA PARTIE DISCRETE. ON S'INTERESSE ALORS AUX PROBLEMES DE CAUSALITE ET AU CALCUL DES CONDITIONS INITIALES. LA REPRESENTATION PAR BOND GRAPH UTILISEE POUR SERVIR DE BASE AU RAISONNEMENT PERMET DE PROPOSER DES SOLUTIONS. LA TROISIEME PARTIE PRESENTE LA PARTIE APPLICATIVE, D'UNE PART A TRAVERS UNE LARGE ETUDE DES ALGORITHMES UTILISES DANS LES SOLVEURS EXISTANT ET D'AUTRE PART A TRAVERS LA PRESENTATION DE L'OUTIL PROPOSE ET DE SON APPLICATION

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 Design Theory written by Pascal Le Masson and published by Springer. This book was released on 2017-04-06 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents the core of recent advances in design theory and its implications for design methods and design organization. Providing a unified perspective on different design methods and approaches, from the most classic (systematic design) to the most advanced (C-K theory), it offers a unique and integrated presentation of traditional and contemporary theories in the field. Examining the principles of each theory, this guide utilizes numerous real life industrial applications, with clear links to engineering design, industrial design, management, economics, psychology and creativity. Containing a section of exams with detailed answers, it is useful for courses in design theory, engineering design and advanced innovation management. "Students and professors, practitioners and researchers in diverse disciplines, interested in design, will find in this book a rich and vital source for studying fundamental design methods and tools as well as the most advanced design theories that work in practice". Professor Yoram Reich, Tel Aviv University, Editor-in-Chief, Research In Engineering Design. "Twenty years of research in design theory and engineering have shown that training in creative design is indeed possible and offers remarkably operational methods - this book is indispensable for all leaders and practitioners who wish to strengthen theinnovation capacity of their company." Pascal Daloz, Executive Vice President, Dassault Systèmes

Download or read book Groundwater Modelling in Arid and Semi Arid Areas written by Howard S. Wheater and published by Cambridge University Press. This book was released on 2010-09-09 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Arid and semi-arid regions face major challenges in the management of scarce freshwater resources under pressures of population, economic development, climate change, pollution and over-abstraction. Groundwater is commonly the most important water resource in these areas. Groundwater models are widely used globally to understand groundwater systems and to guide decisions on management. However, the hydrology of arid and semi-arid areas is very different from that of humid regions, and there is little guidance on the special challenges of groundwater modelling for these areas. This book brings together the experience of internationally leading experts to fill a gap in the scientific and technical literature. It introduces state-of-the-art methods for modelling groundwater resources, illustrated with a wide-ranging set of illustrative examples from around the world. The book is valuable for researchers, practitioners in developed and developing countries, and graduate students in hydrology, hydrogeology, water resources management, environmental engineering and geography.

Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.

Download or read book The Pleistocene Old World written by Olga Soffer and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regional approaches to past human adaptations have generated much new knowledge and understanding. Researchers working on problems of adaptations in the Holocene, from those of simple hunter-gatherers to those of complex sociopolitical entities like the state, have found this approach suitable for comprehension of both ecological and social aspects of human behavior. This research focus has, however, until recently left virtually un touched a major spatial and temporaI segment of prehistory-the Old World during the Pleistocene. Extant literature on this period, by and large, presents either detailed site speeific accounts or offers continental or even global syntheses that tend to compile site speeific information but do not integrate it into whole c~nstructs of funetioning so ciocuhural entities. This volume presents our current state of knowledge about a variety of regional adaptations that charaeterized prehistoric groups in the Old World before 10,000 B. P. The authors of the chapters consider the behavior of humans rather than that of objects or features and present data and models for variaus aspects of past cultures and for culture change. These presentations integrate findings and understandings derived from a number of related disciplines actively involved in researching the past. Data and interpretations are offered on a range of Old \yorld regions during the PaIeolithic, induding Africa, Asia, Australia, and Europe, and chronological coverage spans from the Early to Late PIeisto cene.

Download or read book Cover Crops in West Africa written by International Development Research Centre (Canada) and published by IDRC. This book was released on 1998 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover Crops in West Africa Contributing to Sustainable Agriculture

Download or read book Urban Development written by J. Vernon Henderson and published by Oxford University Press on Demand. This book was released on 1991 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This in-depth study of the economics of urbanization and development explores the key characteristics of urban-rural patterns of production and consumption in developing countries--particularly Brazil, China, and India--as well as government policies affecting urbanization. Drawing on awealth of theoretical and empirical research, Henderson investigates rural-urban migration, changes in the production patterns in cities, the drain of skilled workers from small towns, individual city restrictions on growth and entry, and other phenomena.

Download or read book Four Decades of Scientific Explanation written by Wesley C. Salmon and published by University of Pittsburgh Press. This book was released on 2006-06-15 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: As Aristotle stated, scientific explanation is based on deductive argument-yet, Wesley C. Salmon points out, not all deductive arguments are qualified explanations. The validity of the explanation must itself be examined. Four Decades of Scientific Explanation provides a comprehensive account of the developments in scientific explanation that transpired in the last four decades of the twentieth century. It continues to stand as the most comprehensive treatment of the writings on the subject during these years.Building on the historic 1948 essay by Carl G. Hempel and Paul Oppenheim, "Studies in the Logic of Explanation," which introduced the deductive-nomological (D-N) model on which most work on scientific explanation was based for the following four decades, Salmon goes beyond this model's inherent basis of describing empirical knowledge to tells us "not only what, but also why." Salmon examines the predominant models in chronological order and describes their development, refinement, and criticism or rejection.Four Decades of Scientific Explanation underscores the need for a consensus of approach and ongoing evaluations of methodology in scientific explanation, with the goal of providing a better understanding of natural phenomena.

Download or read book Conservation Regeneration the Modernist Neighbourhood written by and published by . This book was released on 2012 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mis Behaviour of Markets written by Benoit B. Mandelbrot and published by Profile Books. This book was released on 2010-10-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This international bestseller, which foreshadowed a market crash, explains why it could happen again if we don't act now. Fractal geometry is the mathematics of roughness: how to reduce the outline of a jagged leaf or static in a computer connection to a few simple mathematical properties. With his fractal tools, Mandelbrot has got to the bottom of how financial markets really work. He finds they have a shifting sense of time and wild behaviour that makes them volatile, dangerous - and beautiful. In his models, the complex gyrations of the FTSE 100 and exchange rates can be reduced to straightforward formulae that yield a much more accurate description of the risks involved.

Download or read book Philosophy manual a South South perspective written by Chanthalangsy, Phinith and published by UNESCO Publishing. This book was released on 2014-12-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: