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Influence De Linfrastructure Routiere Sur Loccurrence Des Pertes De Controle Des Vehicules Legers En Virage
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Book Synopsis Influence de l'infrastructure routière sur l'occurrence des pertes de contrôle des véhicules légers en virage by : Olivier Orfila
Download or read book Influence de l'infrastructure routière sur l'occurrence des pertes de contrôle des véhicules légers en virage written by Olivier Orfila and published by . This book was released on 2009 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’infrastructure routière joue un rôle très important dans l’occurrence des pertes de contrôle des véhicules légers en virage. Dans le but d’évaluer le niveau de risque associé à une infrastructure, les gestionnaires routiers utilisent actuellement des méthodes reposant sur des études statistiques ou empiriques, sachant que leur validité peut évoluer au cours temps. Le but de ces travaux est donc de compléter ces méthodes par une évaluation physique des tracés routiers basée sur la dynamique des véhicules. Tout d’abord, le problème a été abordé de manière théorique par une écriture de critères issus des modèles de la dynamique des véhicules (modèles point et bicyclette) visant à identifier et quantifier l’impact des paramètres routiers sur l’occurrence des pertes de contrôle. Ensuite, pour représenter avec plus de précision le comportement du conducteur, une modélisation numérique complète de contrôle du système véhicule-infrastructure-conducteur, basée sur un algorithme génétique, a été mise en œuvre. Enfin, ces deux approches ont été validées expérimentalement pour différentes adhérences, rayons de courbure et véhicules sur la piste de référence du LCPC de Nantes et sur routes interurbaines et urbaines. Ces travaux de thèse ont permis d’approfondir la connaissance du rôle de l’infrastructure et de développer deux méthodes (analytique et numérique) d’évaluation des tracés routiers. En perspectives à cette étude, un logiciel basé sur ces méthodes sera développé.
Book Synopsis Contribution à la modélisation et à la régulation du trafic aux intersections by : Fei Yan
Download or read book Contribution à la modélisation et à la régulation du trafic aux intersections written by Fei Yan and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans ce mémoire de thèse, nous avons étudié le problème de régulation du trafic en considérant les nouvelles technologies dans le cadre des Systèmes de Transport Intelligent (STI). Une nouvelle stratégie de contrôle est introduite afin d'exploiter le potentiel des infrastructures de la circulation à un niveau maximum. Plus précisément, basée sur la technologie VII « Intégration Véhicule-Infrastructure », l'infrastructure routière aux carrefours (considérée aussi comme contrôleur) peut communiquer avec les véhicules autonomes qui arrivent à un carrefour de manière continue. Les données importantes sur les véhicules telles que la vitesse, la position et la destination sont alors reçues par des capteurs avancés et envoyées au contrôleur en temps réel. Par conséquent, il est possible d'élaborer une stratégie de contrôle du trafic en considérant chaque véhicule comme une entité indépendante. En d'autres termes, le droit de passage est attribué à chaque véhicule en fonction de son état et en fonction de l'état global du trafic au carrefour. Seuls les véhicules qui ont reçu le droit de passage peuvent traverser le carrefour. Le contrôle du trafic au niveau d'un carrefour vise donc à déterminer les séquences de passage des véhicules, c'est-à-dire les séquences de distribution des droits de passage.Cependant, la plus grande difficulté pour appliquer cette nouvelle stratégie est la contradiction entre l'optimisation des séquences de passages des véhicules et la complexité temporelle. Pour résoudre cette contradiction, nous avons d'abord formulé mathématiquement la problématique de régulation et nous avons ensuite étudié sa complexité. Nous avons prouvé dans un premier temps que le problème de régulation du trafic formulé à l'intersection isolée est NP-hard sous certaines conditions (nombre arbitraire de groupes de flux compatibles GFC,...) et ceci en se basant sur la réduction au problème de 3-Partition. Dans un deuxième temps, nous avons appliqué les méthodes de résolutions exactes sur un carrefour isolé pour proposer des algorithmes exacts (Branch and Bound et Programmation dynamique) permettant de trouver une séquence de passage optimale. Plusieurs propriétés du problème ont été introduites et prouvées et ceci afin qu'elles soient exploitées par ces algorithmes. Ces propriétés ont pour objectif de réduire considérablement l'espace de recherche et par conséquent le temps d'exécution de ces algorithmes exacts.Par ailleurs, nous n'avons pas limité nos recherches sur des carrefours isolées mais nous avons appliqué l'approche de contrôle proposée sur un réseau de carrefours tout en considérant un seul contrôleur. Cependant, un algorithme exact appliqué sur plusieurs carrefours ne peut pas être assez rapide surtout lorsqu'on a besoin de communiquer presque instantanément des informations aux véhicules (en temps réel). Nous avons proposé donc des méthodes de résolutions approchées afin de trouver en un temps raisonnable une séquence de passage satisfaisante pour chaque carrefour. Ces algorithmes (Algorithmes génétiques) ont en effet, besoin de moins de temps de calcul tout en assurant une bonne qualité de solution.Enfin, nous illustrons la mise en œuvre des déférentes approches proposées à travers des résultats de simulation afin d'évaluer leurs performances.
Book Synopsis A Frequency Dictionary of French by : Deryle Lonsdale
Download or read book A Frequency Dictionary of French written by Deryle Lonsdale and published by Routledge. This book was released on 2009-03-25 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Frequency Dictionary of French is an invaluable tool for all learners of French, providing a list of the 5000 most frequently used words in the language. Based on a 23-million-word corpus of French which includes written and spoken material both from France and overseas, this dictionary provides the user with detailed information for each of the 5000 entries, including English equivalents, a sample sentence, its English translation, usage statistics, and an indication of register variation. Users can access the top 5000 words either through the main frequency listing or through an alphabetical index. Throughout the frequency listing there are thematically-organized lists of the top words from a variety of key topics such as sports, weather, clothing, and family terms. An engaging and highly useful resource, the Frequency Dictionary of French will enable students of all levels to get the most out of their study of French vocabulary. Former CD content is now available to access at www.routledge.com/9780415775311 as support material. Designed for use by corpus and computational linguists it provides the full text in a format that researchers can process and turn into suitable lists for their own research work. Deryle Lonsdale is Associate Professor in the Linguistics and English Language Department at Brigham Young University (Provo, Utah). Yvon Le Bras is Associate Professor of French and Department Chair of the French and Italian Department at Brigham Young University (Provo, Utah).
Book Synopsis Technocratic Dreaming by : Paul James
Download or read book Technocratic Dreaming written by Paul James and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technocratic dreaming of very fast trains and Japanese designer cities.
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?
Download or read book Managing Epidemics written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Architecture for the Dead : Cairo's Medieval Necropolis by : Galila El Kadi
Download or read book Architecture for the Dead : Cairo's Medieval Necropolis written by Galila El Kadi and published by American Univ in Cairo Press. This book was released on 2007 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The great medieval necropolis of Cairo, comprising two main areas that together stretch twelve kilometers from north to south, constitutes a major feature of the city's urban landscape. With monumental and smaller-scale mausolea dating from all eras since early medieval times, and boasting some of the finest examples of Mamluk architecture not just in the city but in the region, the necropolis is an unparalleled--and until now largely undocumented--architectural treasure trove. In Architecture for the Dead, architect Galila El Kadi and photographer Alain Bonnamy have produced a comprehensive and visually stunning survey of all areas of the necropolis. Through detailed and painstaking research and remarkable photography, in text, maps, plans, and pictures, they describe and illustrate the astonishing variety of architectural styles in the necropolis: from Mamluk to neo-Mamluk via baroque and neo-pharaonic, from the grandest stone buildings with their decorative domes and minarets to the humblest--but elaborately decorated--wooden structures. The book also documents the modern settlement of the necropolis by families creating a space for the living in and among the tombs and architecture for the dead.
Book Synopsis Don't Let It Happen by : Eric L. Adams
Download or read book Don't Let It Happen written by Eric L. Adams and published by Xulon Press. This book was released on 2009-08 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Don't Let It Happen is a life saving resource, designed to assist parents in detecting when their children are involved in an activity that can be harmful to themselves and/or other family members. Far too often, we take note when a young adult engages in harmful behavior, but we may not realize the broader impact their actions can have. As I will point out throughout this book, a young adult's actions can mean the difference between life and death for an entire family. This book is primarily for law-abiding citizens trying to raise their children and support their families. I hope it acts as a life raft in a sea of confusion. Read it and take the first steps toward personal safety for you and your children. After completing a distinguished 22-year career in the NYPD, Captain Eric Adams retired and was elected to the New York State Senate by the residents of the 20th Senatorial District in Brooklyn, NY. As a Captain in the NYPD, Eric Adams became well-known to New Yorkers as a thoughtful and tireless advocate. Currently, Senator Eric Adams serves as Chairman of the Veterans, Homeland Security, and Military Affairs Committee and Chairman of the Racing, Gaming, and Wagering Committee. He is a member of the Finance, Judiciary, Banks, Consumer Protection, and Energy and Telecommunications Committees. Eric Adams is also a co founder of 100 Blacks in Law Enforcement Who Care. A civil rights organization made up of law enforcement officials who dedicated their own time and resources to address issues such as: child abuse, gang awareness, police misconduct, racial profiling, youth violence and domestic violence. He received his Masters Degree in Public Administration from Marist College, and is a graduate of New York City Technical College and John Jay College of Criminal Justice
Book Synopsis Watsuji Tetsuro's Rinrigaku by : Tetsur? Watsuji
Download or read book Watsuji Tetsuro's Rinrigaku written by Tetsur? Watsuji and published by SUNY Press. This book was released on 1996-01-01 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Watsuji Tetsuro's Rinrigaku (literally, the principles that allow us to live in friendly community) has been regarded as the definitive study of Japanese ethics for half a century. In Japan, ethics is the study of human being or ningen. As an ethical being, one negates individuality by abandoning one's independence from others. This selflessness is the true meaning of goodness.
Book Synopsis Earth Surface Processes, Landforms and Sediment Deposits by : John Bridge
Download or read book Earth Surface Processes, Landforms and Sediment Deposits written by John Bridge and published by Cambridge University Press. This book was released on 2008-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique, advanced textbook combining sedimentology and geomorphology in a comprehensive and integrated way.
Author :Donald R. Jansiewicz Publisher :Addison-Wesley Educational Publishers ISBN 13 :9780063733404 Total Pages :108 pages Book Rating :4.7/5 (334 download)
Book Synopsis The New Alexandria Simulation by : Donald R. Jansiewicz
Download or read book The New Alexandria Simulation written by Donald R. Jansiewicz and published by Addison-Wesley Educational Publishers. This book was released on 1973-01-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cities at Risk written by Helene Joffe and published by Springer Science & Business Media. This book was released on 2013-03-27 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the major growth of the world’s population over the past century, as well as rapid urbanisation, people increasingly live in crowded cities. This trend is often accompanied by proliferation of poorly built housing, uncontrolled use of land, occupation of unsafe environments and overstretched services. When a natural hazard strikes such a city many people are vulnerable to loss of life and property. This book explores what these people think and feel about the threats that they face. How do they live with perils ranging from earthquakes to monsoons, from floods to hurricanes, in the 21st century? The authors are drawn from a large range of disciplines: Psychology, Engineering, Geography, Anthropology and Urban Planning. They also reflect on how perils are represented in multiple cultures: the United States, Japan, Turkey, Bangladesh, the United Kingdom and New Zealand. The book therefore not only brings to light the ways that different cultures represent natural hazards but also the different ways in which various disciplines write about living with perils in the 21st century. The book is addressed both to researchers and to organizations involved with risk management and risk mitigation.
Download or read book Beirut 1920-1940 written by Robert Saliba and published by . This book was released on 1998 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Author :ASSISTANT PROFESSOR OF URBAN PLANNING CLARA. IRAZABAL Publisher :Routledge ISBN 13 :9781138266650 Total Pages :352 pages Book Rating :4.2/5 (666 download)
Book Synopsis City Making and Urban Governance in the Americas by : ASSISTANT PROFESSOR OF URBAN PLANNING CLARA. IRAZABAL
Download or read book City Making and Urban Governance in the Americas written by ASSISTANT PROFESSOR OF URBAN PLANNING CLARA. IRAZABAL and published by Routledge. This book was released on 2016-11-15 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities in both North and South America are confronting tremendous challenges in urban growth and management as they enter the new century. Curitiba in Brazil and Portland in Oregon, US are cities that have achieved recognition for exemplary urban planning programmes over the past three decades. As such, they provide particularly useful illustrations of the intense development pressures that many urban areas currently face. This book explores the dynamics of their urban governance, arguing that, in general, there has been a unique synergy derived from the combination of visionary leadership, innovative urban plans and effective citizen involvement. The book argues that, while urban design and architecture are key to the success in making cities livable and in augmenting the global reputations, such sensitive, innovative urban planning and design projects first need to be governed effectively and grounded within the specifics of their local cultures and existing built environments.
