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Utilisation De La Conduite Cooperative Pour La Regulation De Trafic Dans Une Intersection
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Book Synopsis Utilisation de la conduite coopérative pour la régulation de trafic dans une intersection by : Jia Wu
Download or read book Utilisation de la conduite coopérative pour la régulation de trafic dans une intersection written by Jia Wu and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de ce travail est d'exploiter les potentialités offertes par la conduite coopérative afin de fluidifier le trafic au niveau des intersections isolées. Pour ce faire, nous avons proposé un nouveau système de régulation au sein des intersections en s'inspirant du principe de l'intersection autonome. Nous avons appelé notre système : SVAC (système du véhicule-actionneur coopératif). Il repose sur la possibilité des échanges d'information entre le véhicule et son environnement de conduite.Le SVAC permet une régulation plus précise du trafic puisqu'il se base sur les requêtes de droit de passage envoyées par les véhicules réellement présents dans l'intersection. En outre, grâce à la signalisation à bord, la régulation consiste à définir les séquences de passage des véhicules, ce qui permet de personnaliser la signalisation. Le gain de précision soulève plusieurs obstacles. D'une part, nous nous heurtons systématiquement à l'absence de modèles mathématiques permettant d'aborder le problème. D'autre part, la simple énumération des séquences implique une explosion combinatoire, ce qui ne convient pas à l'application temps-réelle de la régulation des intersections. Pour s'affranchir des deux problématiques nous avons utilisé les réseaux de Petri P-temporisés. Le modèle nous a permis de décrire sous la forme d'équations mathématiques les compteurs des différents évènements observés par les véhicules. Deux objectifs de régulation ont été dégagés après avoir déduit le temps moyen d'attente basé sur la formule de Little. Le premier consiste à vider les intersections au plus tôt. Nous avons proposé un algorithme de programmation dynamique et deux heuristiques. La première heuristique est directement issue de l'analyse des propriétés du problème posé. La deuxième est basée sur l'algorithme de colonies de fourmis. En effet, le problème défini est un cas particulier du problème du voyageur de commerce. Le deuxième objectif de régulation consiste à minimiser instantanément la longueur de la file d'attente. Dans ce cadre, nous avons supposé le fonctionnement à vitesse maximale du réseau de Petri. L'utilisation des contraintes sur les ressources nous a permis de définir des règles simples de régulation en utilisant le mapping.Dans ce mémoire, nous avons utilisé la simulation microscopique basée sur les lois de poursuite pour s'approcher du comportement de conduite. La simulation a servi pour la comparaison des différentes approches proposées dans ce mémoire avec les régulateurs adaptatifs et les intersections autonomes. Dans tous les cas notre approche se distingue par un gain de capacité, ce qui nous a encouragé de reproduire le SVAC à travers un prototype de robots. Cette maquette montre la faisabilité du système au moins pour des applications industrielles.
Book Synopsis Régulation coopérative des intersections by : Florent Perronnet
Download or read book Régulation coopérative des intersections written by Florent Perronnet and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans ce travail, nous exploitons le potentiel offert par les véhicules autonomes coopératifs, pour fluidifier le trafic dans une intersection isolée puis dans un réseau d'intersections. Nous proposons le protocole SVAC (Système du Véhicule Actionneur Coopératif) permettant de réguler une intersection isolée. SVAC est basé sur une distribution individuelle du droit de passage qui respecte un ordre précis donné par une séquence de passage.Pour optimiser la séquence de passage, nous définissons la politique PED (Politique d'Evacuation Distribuée) permettant d'améliorer le temps d'évacuation total de l'intersection. La création de la séquence de passage est étudiée à travers deux modélisations. Une modélisation sous forme de graphes permettant le calcul de la solution optimale en connaissant les dates d'arrivée de tous les véhicules, et une modélisation de type réseaux de Petri avec dateurs pour traiter la régulation temps-réel. Des tests réels avec des véhicules équipés ont été réalisés pour étudier la faisabilité du protocole SVAC. Des simulations mettant en jeu un trafic réaliste permettent ensuite de montrer la capacité de fluidifier le trafic par rapport à une régulation classique par feux tricolores.La régulation d'un réseau d'intersections soulève les problèmes d'interblocage et de réorientation du trafic. Nous proposons le protocole SVACRI (Système du Véhicule Actionneur Coopératif pour les Réseaux d'Intersections) qui permet d'éliminer à priori les risques d'interblocage à travers la définition de contraintes d'occupation et de réservation de l'espace et du temps. Nous étudions également la possibilité d'améliorer la fluidité du trafic à travers le routage des véhicules, en tirant avantage du protocole SVACRI. Enfin, nous généralisons le système de régulation proposé pour la synchronisation des vitesses aux intersections.
Book Synopsis Safeguarding Traditional Cultures by : Peter Seitel
Download or read book Safeguarding Traditional Cultures written by Peter Seitel and published by . This book was released on 2001 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings from a conference "A global assessment of the 1989 recommendation on the safeguarding of traditional culture and folklore" held at the Smithsonian Institution June 27-30 1999. The purpose of the conference was to assess the implementation of the Recommendation (an international normative instrument adopted by UNESCO in 1989), to bring together points of view and perspectives on the Recommendaion from around the world, and suggest ways in which the Recommendation might develop in the future so that its purpose, the safeguarding of traditional culture and folklore, might be achieved.
Book Synopsis Aiding Decisions with Multiple Criteria by : Denis Bouyssou
Download or read book Aiding Decisions with Multiple Criteria written by Denis Bouyssou and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiding Decisions With Multiple Criteria: Essays in Honor of Bernard Roy is organized around two broad themes: Graph Theory with path-breaking contributions on the theory of flows in networks and project scheduling, Multiple Criteria Decision Aiding with the invention of the family of ELECTRE methods and methodological contribution to decision-aiding which lead to the creation of Multi-Criteria Decision Analysis (MCDA). Professor Bernard Roy has had considerable influence on the development of these two broad areas. £/LIST£ Part one contains papers by Jacques Lesourne, and Dominique de Werra & Pierre Hansen related to the early career of Bernard Roy when he developed many new techniques and concepts in Graph Theory in order to cope with complex real-world problems. Part two of the book is devoted to Philosophy and Epistemology of Decision-Aiding with contributions from Valerie Belton & Jacques Pictet and Jean-Luis Genard & Marc Pirlot. Part three includes contributions based on Theory and Methodology of Multi-Criteria Decision-Aiding based on a general framework for conjoint measurement that allows intrasitive preferences. Denis Bouyssou & Marc Pirlot; Alexis Tsoukiàs, Patrice Perny & Philippe Vincke; Luis Dias & João Clímaco; Daniel Vanderpooten; Michael Doumpos & Constantin Zopounidis; and Marc Roubens offer a considerable range of examinations of this aspect of MCDA. Part four is devoted to Perference Modeling with contributions from Peter Fishburn; Salvatore Greco, Benedetto Matarazzo & Roman Slowinski; Salem Benferhat, Didier Dubois & Henri Prade; Oscar Franzese & Mark McCord; Bertrand Munier; and Raymond Bisdorff. Part five groups Applications of Multi-Criteria Decision-Aiding, and Carlos Henggeler Antunes, Carla Oliveira & João Clímaco; Carlos Bana e Costa, Manuel da Costa-Lobo, Isabel Ramos & Jean-Claude Vansnick; Yannis Siskos & Evangelos Grigoroudis; Jean-Pierre Brans, Pierre Kunsch & Bertrand Mareschal offer a wide variety of application problems. Finally, Part six includes contributions on Multi-Objective Mathematical Programming from Jacques Teghem, Walter Habenicht and Pekka Korhonen.
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.
Book Synopsis 2nd Pan-African Symposium on the Sustainable Use of Natural Resources in Africa by : Bihini won wa Musiti
Download or read book 2nd Pan-African Symposium on the Sustainable Use of Natural Resources in Africa written by Bihini won wa Musiti and published by IUCN. This book was released on 2003 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bilingual publication results from a four-day symposium aimed at capturing the general directions and analytical issues that characterize approaches to sustainable use in Africa. The papers included in this work are organized under four major headings: modes of use, devolution, scale issues and external issues. Authors explore these themes through the use of case studies and the description of specific regional experiences. External issues are further explored in a series of commissioned policy papers which have also been included.
Book Synopsis Neighbourhoods in Transition by : Emmanuel Rey
Download or read book Neighbourhoods in Transition written by Emmanuel Rey and published by Springer Nature. This book was released on 2021-09-25 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book is focused on the intersection between urban brownfields and the sustainability transitions of metreopolitan areas, cities and neighbourhoods. It provides both a theoretical and practical approach to the topic, offering a thorough introduction to urban brownfields and regeneration projects as well as an operational monitoring tool. Neighbourhoods in Transition begins with an overview of historic urban development and strategic areas in the hearts of towns to be developed. It then defines several key issues related to the topic, including urban brownfields, regeneration projects, and sustainability issues related to neighbourhood development. The second part of this book is focused on support tools, explaining the challenges faced, the steps involved in a regeneration process, and offering an operational monitoring tool. It applies the unique tool to case studies in three selected neighbourhoods and the outcomes of one case study are also presented and discussed, highlighting its benefits. The audience for this book will be both professional and academic. It will support researchers as an up-to-date reference book on urban brownfield regeneration projects, and also the work of architects, urban designers, urban planners and engineers involved in sustainability transitions of the built environment.
Book Synopsis Multi-party Elections in Africa by : Michael Cowen
Download or read book Multi-party Elections in Africa written by Michael Cowen and published by . This book was released on 2002 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains electoral studies of multiparty politics in 14 African countries during the 1990s. Most are about national elections in Anglophone Africa. There are also less well-known examples from Sudan, Ethiopia and Guinea Bissau. The collection also features studies of the local elections in Namibia and of a significant by-election in Malawi. The multiparty period had been put, wherever possible, within the historical context of earlier elections in Africa. Questions addressed include: how did incumbent governing regimes learn to live with multiparty politics? Why have some elections been so closely fought and others have suffered from apathy? Why has there been relatively open political expression and activity when the elections have increased the political and economic manipulation by incumbent governments? Why have the elections of the 1990s been so marked by local and ethnic variations? To what extent did this wave of democracy result from pressure from donor countries?
Book Synopsis Orchids by : IUCN/SSC Orchid Specialist Group
Download or read book Orchids written by IUCN/SSC Orchid Specialist Group and published by IUCN. This book was released on 1996 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This action plan chronicles the threats faced by wild orchids, but more importantly to critical habitats that host extraordinarily high orchid diversity and endemicity. It explores and recommends specific ways that national and local government, legislators, scientists and orchid conservationists as well as growers can all help to reverse present trends. The facts and viewpoints presented in this comprehensive document update and supplement the information available to conservation organizations and agencies through the world so that they can lobby their appropriate government offices more effectively.
Book Synopsis The International Law of the Sea by : Yoshifumi Tanaka
Download or read book The International Law of the Sea written by Yoshifumi Tanaka and published by Cambridge University Press. This book was released on 2012-04-05 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook on the law of the sea sets the subject in the context of public international law. It comprehensively covers the principal topics of the course, from the legal regimes governing the different jurisdictional zones, to international co-operation for protection of the marine environment and marine living resources.
Book Synopsis The Cambridge Aerospace Dictionary by : Bill Gunston
Download or read book The Cambridge Aerospace Dictionary written by Bill Gunston and published by Cambridge University Press. This book was released on 2011-02-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Aerospace Dictionary is an authoritative and accessible reference useful to scholars and enthusiasts alike. This dictionary is an essential tool for professionals involved in the aerospace industry and flight, and for anyone who must read and understand the technical literature of the aerospace industry and about specific air and space craft. It is also an ideal reference for engineering and physics students encountering a subject replete with technical jargon and acronyms. Bill Gunston, one of the most widely read and respected aviation writers, has added more than 5,000 new terms and acronyms to this carefully updated volume. Terms used in the dictionary reflect the diverse and international nature of the aerospace industry and include brief explanations of aerospace materials and organizations. Gunston has scrupulously avoided terms specific to manufacturers, airlines, and armed forces in an effort to encourage clear communication and understanding among professionals.
Book Synopsis Planning, Connecting, and Financing Cities — Now by : Somik V. Lall
Download or read book Planning, Connecting, and Financing Cities — Now written by Somik V. Lall and published by World Bank Publications. This book was released on 2013-01-21 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report was written by a team led by Somik V. Lall"--P. xi.
Author :University of Pennsylvania. Middle East Center Publisher :Carbondale : Southern Illinois University Press ISBN 13 : Total Pages :472 pages Book Rating :4.3/5 (91 download)
Book Synopsis Studies in Eighteenth Century Islamic History by : University of Pennsylvania. Middle East Center
Download or read book Studies in Eighteenth Century Islamic History written by University of Pennsylvania. Middle East Center and published by Carbondale : Southern Illinois University Press. This book was released on 1977 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interdisciplinary in conception, this cooperative study by the world's leading Islamists consists of sixteen chapters and three general introductions tracing in historical perspective the administrative, economic, and cultural aspects of various regions of the Ottoman Empire as well as the overall structure of the Empire itself. A complete glossary of Arabic, Turkish, and Persian terms is provided, as well as a bibliography of major works in European and non-European languages. More than forty photographs illustrate changing tastes in Islamic architecture and art. The fourth in a series of biennial colloquia sponsored by and published as Papers on Islamic History, under the auspices of the Near Eastern History Group, Oxford, and the Middle East Center, University of Pennsylvania.
Download or read book Japanese Railway Engineering written by and published by . This book was released on 1993 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Explaining Monetary and Financial Innovation by : Peter Bernholz
Download or read book Explaining Monetary and Financial Innovation written by Peter Bernholz and published by Springer. This book was released on 2014-06-26 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses theories of monetary and financial innovation and applies them to key monetary and financial innovations in history – starting with the use of silver bars in Mesopotamia and ending with the emergence of the Eurodollar market in London. The key monetary innovations are coinage (Asia minor, China, India), the payment of interest on loans, the bill of exchange and deposit banking (Venice, Antwerp, Amsterdam, London). The main financial innovation is the emergence of bond markets (also starting in Venice). Episodes of innovation are contrasted with relatively stagnant environments (the Persian Empire, the Roman Empire, the Spanish Empire). The comparisons suggest that small, open and competing jurisdictions have been more innovative than large empires – as has been suggested by David Hume in 1742.
Book Synopsis Making the Difference! by : Claudia Haarmann
Download or read book Making the Difference! written by Claudia Haarmann and published by . This book was released on 2009 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
