Download or read book Une nouvelle approche pour la modelisation et la gestion des contraintes en CAO written by Sandrine Leinen and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book UNE NOUVELLE APPROCHE POUR LA MODELISATION ET LA GESTION DES CONTRAINTES EN CAO written by SANDRINE.. LEINEN and published by . This book was released on 1997 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE SAVOIR-FAIRE DES LOGICIELS DE CAO (CONCEPTION ASSISTEE PAR ORDINATEUR) AINSI QUE LES TECHNIQUES D'IA (INTELLIGENCE ARTIFICIELLE) SONT SOUVENT ASSOCIES A LA RESOLUTION DE PROBLEMES DANS DES DOMAINES NOMBREUX ET VARIES. DE NOS JOURS, IL EST DEMANDE A TOUT LOGICIEL DE CAO DE FOURNIR A L'UTILISATEUR UNE REELLE ASSISTANCE ET D'ETRE CAPABLE DE REALISER DES RAISONNEMENTS. NOUS PRESENTONS LES PRINCIPALES FONCTIONNALITES REQUISES PAR LES SYSTEMES DE CAO ACTUELS AINSI QUE LES METHODES DE MISE EN UVRE POSSIBLES. LA PRESENTATION DE PROBLEMES CONTRAINTS DANS DES DOMAINES VARIES MONTRE QUE LEUR RESOLUTION PEUT SE FAIRE PAR DES LOGICIELS DE CAO. ON EVOQUERA EN PARTICULIER LES PROBLEMES DE CONCEPTION DE PIECES MECANIQUES, D'ORDONNANCEMENT DE TACHES OU ENCORE D'AMENAGEMENT SPATIAL. TOUT D'ABORD, NOUS NOUS INTERESSONS A LA GESTION DES CONTRAINTES GEOMETRIQUES ET TOPOLOGIQUES LORS DE LA CONCEPTION DE PIECES MECANIQUES ET PLUS PARTICULIEREMENT A L'ETUDE DE LA COMPARAISON DE MODELES DE CAO PAR NORMALISATION DE GRAPHES. CETTE COMPARAISON PERMET LORS DE LA CONCEPTION, LA REUTILISATION EN TOTALITE OU EN PARTIE DE PIECES EXISTANTES ET ISSUES DE BIBLIOTHEQUES. DEUX METHODES (L'UNE ALGORITHMIQUE, L'AUTRE UTILISANT LE FORMALISME CSP) SONT PRESENTEES ET PERMETTENT LA COMPARAISON DE MODELES DE CAO PAR NORMALISATION DE GRAPHES. NOUS NOUS INTERESSONS ENSUITE A UN TYPE PLUS PARTICULIER DE CONTRAINTES : LES CONTRAINTES FONCTIONNELLES. UN PROBLEME PARTICULIER D'AMENAGEMENT SPATIAL EST CONSIDERE : LA CONCEPTION DE CUISINES INTEGREES. LES METHODES DE MODELISATION MISES EN UVRE SONT ENSUITE PRESENTEES AINSI QUE DEUX METHODES DE RESOLUTION.
Download or read book APPLICATION DE LA PROGRAMMATION PAR CONTRAINTES AUX PROBLEMES DE CAO DES CIRCUITS INTEGRES written by Aïssam Mezhoud and published by . This book was released on 1996 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: AVEC L'INTEGRATION CROISSANTE DES CIRCUITS, ON ASSISTE A UNE COMPLEXIFICATION DE LA SYNTHESE DUE NON SEULEMENT A L'ASPECT COMBINATOIRE DE SES PROBLEMES MAIS AUSSI A LA NATURE DE LEURS FONCTIONS DE COUT (TEMPS D'EXECUTION, CONSOMMATION ...) QUI DEPEND DE CRITERES DE PLUS EN PLUS NOMBREUX. LES TECHNIQUES CLASSIQUES TELLES QUE LA PROGRAMMATION EN NOMBRE ENTIERS NE SONT PAS ADAPTEES A CES NOUVEAUX PROBLEMES DE CAO. D'OU NOTRE INTERET POUR LA PROGRAMMATION PAR CONTRAINTES QUI EST UNE NOUVELLE APPROCHE DE RESOLUTION DE PROBLEMES DIFFICILES, PERMETTANT D'UNE PART UNE EXPRESSIVITE SUFFISANTE POUR UNE MODELISATION COMPACTE DE PROBLEMES ET D'AUTRE PART, UNE MEILLEURE EFFICACITE DANS LA RESOLUTION. DANS LES TECHNOLOGIES SUPERIEURS A 1 M, LE RETARD EST ESSENTIELLEMENT DU AU TEMPS DE PROPAGATION DANS LES PORTES, ALORS QUE DANS LES TECHNOLOGIES SUB-MICRONIQUES, LES INTERCONNEXIONS SONT LES PRINCIPALES RESPONSABLES DU RETARD. CETTE INVERSION DE TENDANCE REMET EN CAUSE LES METHODES DE CONCEPTION UTILISEES ET REND LE PROBLEME D'INTERDEPENDANCE ENTRE LES TACHES D'ALLOCATION DES INTERCONNEXIONS ET DE PLACEMENT-ROUTAGE DE PLUS EN PLUS GENANT. POUR REMEDIER A CE PROBLEME D'INTERDEPENDANCE, NOUS AVONS PROPOSE DEUX APPROCHES COMPLEMENTAIRES BASEES SUR LE FLOORPLANNING ORIENTE COMMUNICATIONS. CELUI-CI S'EFFECUE AVANT L'ALLOCATION D'INTERCONNEXIONS ET A POUR OBJET DE PLACER DES COMPOSANTS SELON LEURS COMMUNICATIONS. L'ALLOCATION D'INTERCONNEXIONS PEUT DONC REDUIRE LE TEMPS DE CYCLE D'HORLOGE EN PRENANT EN COMPTE LA LONGUEUR DES BUS. DANS LA PREMIERE APPROCHE, LE FLOORPLANNING ORIENTE COMMUNICATIONS N'EST UTILISE QUE POUR ESTIMER LA LONGUEUR DES BUS. LE PLACEMENT FINAL DES COMPOSANTS S'ETABLIRA A UN NIVEAU INFERIEUR DU PROCESSUS DE SYNTHESE. DANS LA SECONDE APPROCHE, LE FLOORPLANNING ORIENTE COMMUNICATIONS EST CONSIDERE COMME UN PLACEMENT DEFINITIF AU NIVEAU ARCHITECTURAL DE LA SYNTHESE.
Download or read book Gestion int gr e de donn es CAO et EF written by Sébastien Charles and published by . This book was released on 2005 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ces dernières années, l’utilisation de la simulation numérique s’est généralisée dans le processus de développement des produits. Auparavant, les simulations étaient réalisées séquentiellement et n’intervenaient qu’en phase avale de l’activité de conception dans une optique de validation. Les approches actuelles tendent vers une simulation concourante avec l’intégration de paramètres multiples telles que les analyses stochastiques (statistiques), les simulations d’optimisation multi-physiques ou les analyses multi-scénarios. L’impact direct de ces approches et l’augmentation du nombre de simulations et de variantes de simulation, la croissance de la complexité des modèles de simulation, et l’augmentation du volume de données. Ceci a généré un fort besoin de gestion, de traçabilité, d’échange et de synchronisation des données de simulation pour garantir l’obtention des résultats indispensables aux prises de décision. Ces préoccupations sont à l’origine des travaux présentés dans ce mémoire, lequel spécifie un environnement de gestion de données de simulation dans une approche PLM. Ce dernier a été défini dans l’optique de favoriser l’intégration des données de CAO et d’analyse par éléments finis. Cet environnement, nommé EGDS, propose une modélisation novatrice des cycles de simulation à travers l’adaptation et l’enrichissement des méthodes de gestion des données issues des PLM. Afin de garantir son interopérabilité, un format neutre d’échange de données de gestion de simulation s’appuyant sur la norme STEP est également spécifié
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.
Download or read book Hubert Curien pour une politique internationale de la science written by and published by Rue d'Ulm. This book was released on 1994 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1989 2nd European Conference on Architecture written by T.C. Steemers and published by Springer. This book was released on 1990-04-30 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of an International Conference held at Paris, France, December 4-8, 1989
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 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 Integrated Design and Manufacturing in Mechanical Engineering written by Patrick Chedmail and published by Springer. This book was released on 2012-11-05 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the selected papers of the first I.D.M.M.E. conference on 'Integrated Design and Manufacturing in Mechanical Engineering', held in Nantes from 15-17 April 1996. Its objective was to discuss the questions related to the definition of the optimal design and manufacturing processes and to their integration through coherent methodologies in adapted environments. The initiative of the Conference and the organization thereof, is mainly due to the efforts of the french PRIMECA group (Pool of Computer Resources for Mechanics) started eight years ago. We were able to attract the internationru community with the support of the International Institution for Production Engineering Research (C.I.R.P.). The conference brought together two hundred and fifty specialists from around the world. About ninety papers and twenty posters were presented covering three main topics : optimization and evaluation of the product design process, optimization and evaluation of the manufacturing systems and methodological aspects.
Download or read book Radio Link Quality Estimation in Low Power Wireless Networks written by Nouha Baccour and published by Springer Science & Business Media. This book was released on 2013-07-18 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive survey on related work for radio link quality estimation, which covers the characteristics of low-power links, the fundamental concepts of link quality estimation in wireless sensor networks, a taxonomy of existing link quality estimators and their performance analysis. It then shows how link quality estimation can be used for designing protocols and mechanisms such as routing and hand-off. The final part is dedicated to radio interference estimation, generation and mitigation.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Decentralised Internet of Things written by Mohammad Ayoub Khan and published by Springer. This book was released on 2020-02-14 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents practical as well as conceptual insights into the latest trends, tools, techniques and methodologies of blockchains for the Internet of Things. The decentralised Internet of Things (IoT) not only reduces infrastructure costs, but also provides a standardised peer-to-peer communication model for billions of transactions. However, there are significant security challenges associated with peer-to-peer communication. The decentralised concept of blockchain technology ensures transparent interactions between different parties, which are more secure and reliable thanks to distributed ledger and proof-of-work consensus algorithms. Blockchains allow trustless, peer-to-peer communication and have already proven their worth in the world of financial services. The blockchain can be implanted in IoT systems to deal with the issues of scale, trustworthiness and decentralisation, allowing billions of devices to share the same network without the need for additional resources. This book discusses the latest tools and methodology and concepts in the decentralised Internet of Things. Each chapter presents an in-depth investigation of the potential of blockchains in the Internet of Things, addressing the state-of-the-art in and future perspectives of the decentralised Internet of Things. Further, industry experts, researchers and academicians share their ideas and experiences relating to frontier technologies, breakthrough and innovative solutions and applications.
Download or read book Classical Architecture written by Alexander Tzonis and published by MIT Press. This book was released on 1986-10-16 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fascinating introduction to classical art and architecture is the first book to investigate the way classical buildings are put together as formal structures. It researches the generative rules, the poetics of composition that classical architecture shares with classical music, poetry, and drama, and is enriched by a variety of examples and an extensive analysis of compositional rules. The 205 line drawings make up a discourse of their own, a pictorial text that serves as an introductory theory of composition or basic design aid. Drawing from Vitruvius, the poetics of Aristotle, the theories of classical architecture, music, and poetry since the Renaissance, and the poetics of the Russian formalists, the authors present classical architecture as a coherent system of architectural thinking that is capable of producing a tragic humanistic discourse, a public art with critical, moral, and philosophical meaning.
Download or read book Market Assessment Study of New Media Learning Materials written by Canada. Industry Canada and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delay Differential Equations written by Balakumar Balachandran and published by Springer Science & Business Media. This book was released on 2009-04-05 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delay Differential Equations: Recent Advances and New Directions cohesively presents contributions from leading experts on the theory and applications of functional and delay differential equations (DDEs). Students and researchers will benefit from a unique focus on theory, symbolic, and numerical methods, which illustrate how the concepts described can be applied to practical systems ranging from automotive engines to remote control over the Internet. Comprehensive coverage of recent advances, analytical contributions, computational techniques, and illustrative examples of the application of current results drawn from biology, physics, mechanics, and control theory. Students, engineers and researchers from various scientific fields will find Delay Differential Equations: Recent Advances and New Directions a valuable reference.
Download or read book Persistence Theory From Quiver Representations to Data Analysis written by Steve Y. Oudot and published by American Mathematical Soc.. This book was released on 2017-05-17 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Persistence theory emerged in the early 2000s as a new theory in the area of applied and computational topology. This book provides a broad and modern view of the subject, including its algebraic, topological, and algorithmic aspects. It also elaborates on applications in data analysis. The level of detail of the exposition has been set so as to keep a survey style, while providing sufficient insights into the proofs so the reader can understand the mechanisms at work. The book is organized into three parts. The first part is dedicated to the foundations of persistence and emphasizes its connection to quiver representation theory. The second part focuses on its connection to applications through a few selected topics. The third part provides perspectives for both the theory and its applications. The book can be used as a text for a course on applied topology or data analysis.
