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Methodes Doptimisation Pour Levitement Aerien
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Book Synopsis METHODES D'OPTIMISATION POUR L'EVITEMENT AERIEN by : Frederic Medioni
Download or read book METHODES D'OPTIMISATION POUR L'EVITEMENT AERIEN written by Frederic Medioni and published by . This book was released on 1998 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE CONTROLE AERIEN DOIT ASSURER LA SEPARATION DES AVIONS EN MINIMISANT LES RETARDS. POUR DES RAISONS D'EFFICACITE, DES SYSTEMES D'EVITEMENT AUTOMATIQUES SONT ENVISAGES AVEC, LA OU LE TRAFIC EST LE MOINS DENSE, UN TRANSFERT DE RESPONSABILITES DES CONTROLEURS AUX AVIONS. UN SYSTEME D'EVITEMENT DOIT PROPOSER DES TRAJECTOIRES D'EVITEMENT (ASSURANT LA SEPARATION). IL PEUT ETRE CENTRALISE OU EMBARQUE (CHAQUE AVION GENERE SA TRAJECTOIRE). NOUS PRESENTONS DEUX METHODES POUR GENERER DES TRAJECTOIRES D'EVITEMENT NORMALISEES (DEFINIES PAR DES INSTANTS DE MANUVRES ET DES SENS DE DEVIATION) : UN ALGORITHME BRANCH AND BOUND UTILISANT DES METHODES D'INTERVALLES ET UN ALGORITHME A*. DEUX APPROCHES DIFFERENTES DE CHACUNE DE CES METHODES SONT DECRITES ET TESTEES SUR DES CAS-TESTS DE CONFLITS. L'APPROCHE GLOBALE GENERE SIMULTANEMENT LES TRAJECTOIRES DE TOUS LES AVIONS (SYSTEME CENTRALISE). L'APPROCHE SEQUENTIELLE LES GENERE SUCCESSIVEMENT, SELON UN ORDRE DE PRIORITE (FORME SEQUENTIELLE D'UN SYSTEME EMBARQUE). DES TRAJECTOIRES DE BONNE QUALITE SONT OBTENUES. CEPENDANT, L'APPROCHE GLOBALE DES METHODES D'INTERVALLES EST TRES COUTEUSE EN TEMPS DE CALCUL ET CELLE DE L'ALGORITHME A*, EN MEMOIRE. L'EFFICACITE DES APPROCHES SEQUENTIELLES DEPEND DE L'ORDRE DE PRIORITE. L'ALGORITHME A*, CONTRAIREMENT AUX METHODES D'INTERVALLES, PERMET DE CONSIDERER DES VITESSES VARIABLES (AVIONS EN MONTEE OU EN DESCENTE). TESTEE SUR UN SIMULATEUR DE TRAFIC REEL, SA VERSION SEQUENTIELLE DONNE DE BONS RESULTATS. UNE METHODE DE GENERATION DE TRAJECTOIRES PAR COMMANDE CONTINUE (FORME REACTIVE D'UN SYSTEME EMBARQUE) EST PRESENTEE ENSUITE. A CHAQUE INSTANT LE CAP DE L'AVION EST MODIFIE AU MOYEN D'UN RESEAU DE NEURONE. L'APPRENTISSAGE DES RESEAUX DE NEURONE SE FAIT PAR ALGORITHME GENETIQUE. TROIS MODES D'APPRENTISSAGES SONT COMPARES : UTILISATION DE BASES D'APPRENTISSAGE FIXES ET RENOUVELEES, ET COEVOLUTION. LES MEILLEURS RESULTATS SONT OBTENUS AVEC LES BASES RENOUVELEES.
Book Synopsis Metaheuristics for Hard Optimization by : Johann Dréo
Download or read book Metaheuristics for Hard Optimization written by Johann Dréo and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains case studies from engineering and operations research Includes commented literature for each chapter
Book Synopsis Evitement de conflits aériens par une régulation subliminale en vitesse by : Loïc Cellier
Download or read book Evitement de conflits aériens par une régulation subliminale en vitesse written by Loïc Cellier and published by . This book was released on 2015 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: À travers une approche de contrôle optimal, cette thèse de doctorat propose une étude des modèles et des techniques de résolution dans un domaine d'application propre à la gestion du trafic aérien. Motivés par la croissance des flux aériens d'une part, et les développements en théorie du contrôle optimal d'autre part, ces travaux portent sur l'analyse du problème d'évitement de conflits aériens. Cette étude permet le développement de nouvelles approches et algorithmes en vue d'aider les contrôleurs aériens dans leur tâche. Ainsi, dans le cadre du trafic aérien, afin de préserver des distances minimales de sécurité entre avions, lors de phases tactiques et de configurations des vols en-route, notre recherche se focalise sur une stratégie de régulation subliminale en vitesse (variations très réduites), pour assurer la séparation entre avions, tout en conservant leur trajectoire prédéfinie. D'une part, une méthode de résolution numérique en contrôle optimal telle que la méthode directe de tir, impliquant une discrétisation totale ou partielle du problème, transforme le problème initial en un problème en programmation non linéaire de grande taille. Ce type de méthodes peut générer des problèmes d'optimisation de grande taille numériquement di_ciles à résoudre. Suivant le nombre de variables du problème, elles peuvent s'avérer trop coûteuse en termes de temps de calculs. D'autre part, les contraintes sur les variables d'états du problème posent des di_cultés de résolution, par exemple, pour l'usage d'une méthode numérique indirecte de tir. Développant les informations caractéristiques des conflits aériens, une détection et une détermination a priori des zones de conflits permettent alors la décomposition du problème présenté de contrôle optimal en sous-problèmes plus aisés à résoudre. La résolution des sous-problèmes hors-zones peut être abordée en utilisant les conditions du principe du maximum de Pontryagin, ce qui en permet une résolution e_cace. Une combinaison de méthodes numériques directes de tir et d'application des conditions du principe du maximum de Pontryagin est proposée, et des implémentations numériques valident ce type d'approche.
Book Synopsis On-line Handling of Air Traffic by : André Benoît
Download or read book On-line Handling of Air Traffic written by André Benoît and published by . This book was released on 1994 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimal Control Theory by : Suresh P. Sethi
Download or read book Optimal Control Theory written by Suresh P. Sethi and published by Taylor & Francis US. This book was released on 2006 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal control methods are used to determine optimal ways to control a dynamic system. The theoretical work in this field serves as a foundation for the book, which the authors have applied to business management problems developed from their research and classroom instruction. Sethi and Thompson have provided management science and economics communities with a thoroughly revised edition of their classic text on Optimal Control Theory. The new edition has been completely refined with careful attention to the text and graphic material presentation. Chapters cover a range of topics including finance, production and inventory problems, marketing problems, machine maintenance and replacement, problems of optimal consumption of natural resources, and applications of control theory to economics. The book contains new results that were not available when the first edition was published, as well as an expansion of the material on stochastic optimal control theory.
Download or read book Geomarketing written by Gérard Cliquet and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title describes the state of the art in all areas of spatial marketing, discussing the various constituents which make up the geography of markets. Demand varies according to location and can be measured according to revenue, the number of households, spending patterns and lifestyles. Supply is also dependent on position, because prices, services, products and available shops rely on location, while the difference between supply and demand is the rationale for the role of the trader. The book also covers the way geographic techniques help to solve marketing problems and contains chapters written by contributors with extensive experience in this field; given that it is crucial for companies to direct their marketing correctly at their target audience, this will be indispensable reading for those involved in this area.
Book Synopsis Faecal Sludge Management by : Linda Strande
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 IHM-HCI 2001 written by Jean Vanderdonckt and published by Editions Cépaduès. This book was released on 2001 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Disaster risk reduction in school curricula: case studies from thirty countries by :
Download or read book Disaster risk reduction in school curricula: case studies from thirty countries written by and published by UNESCO. This book was released on 2012 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Parliamentary Oversight of the Security Sector by : Philipp Fluri
Download or read book Parliamentary Oversight of the Security Sector written by Philipp Fluri and published by DCAF. This book was released on 2003 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bananas and Food Security by : Claudine Picq
Download or read book Bananas and Food Security written by Claudine Picq and published by Bioversity International. This book was released on 1999 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: Importance de la banane sur les plans economique et alimentaire; Diversite et dynamique des filieres; Organisation des marches et commercialisation; Systemes de productions/production systems.
Book Synopsis Reef Restoration Concepts & Guidelines by : Alasdair J. Edwards
Download or read book Reef Restoration Concepts & Guidelines written by Alasdair J. Edwards and published by . This book was released on 2007 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tissue Engineering for Artificial Organs, 2 Volume Set by : Anwarul Hasan
Download or read book Tissue Engineering for Artificial Organs, 2 Volume Set written by Anwarul Hasan and published by John Wiley & Sons. This book was released on 2017-06-19 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the latest achievements, trends, and the current state of the art of this important and rapidly expanding field. Clearly and logically structured, the first part of the book explores the fundamentals of tissue engineering, providing a separate chapter on each of the basic topics, including biomaterials stem cells, biosensors and bioreactors. The second part then follows a more applied approach, discussing various applications of tissue engineering, such as the replacement or repairing of skins, cartilages, livers and blood vessels, to trachea, lungs and cardiac tissues, to musculoskeletal tissue engineering used for bones and ligaments as well as pancreas, kidney and neural tissue engineering for the brain. The book concludes with a look at future technological advances. An invaluable reading for entrants to the field in biomedical engineering as well as expert researchers and developers in industry.
Book Synopsis Application of the Single Failure Criterion by : International Atomic Energy Agency
Download or read book Application of the Single Failure Criterion written by International Atomic Energy Agency and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Short-range FM Radar by : Igor V. Komarov
Download or read book Fundamentals of Short-range FM Radar written by Igor V. Komarov and published by Artech House. This book was released on 2003 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here's a unique new resource that offers you a solid understanding of the fundamental theory, operation principles and applications of short-range frequency modulated continuous wave (FM CW) radar. You learn how to choose the structural scheme of short-range FM radar, and determine the optimal algorithm of useful signal processing necessary for ensuring the technical characteristic of radar. Moreover, this practical reference shows you how to ensure the minimum level of radar signal parasitic amplitude, calculate modulation signal distortion, and compensate for nonlinear distortion.
Book Synopsis Handbook of Pricing Research in Marketing by : Vithala R. Rao
Download or read book Handbook of Pricing Research in Marketing written by Vithala R. Rao and published by Edward Elgar Publishing. This book was released on 2009 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pricing is an essential aspect of the marketing mix for brands and products. Further, pricing research in marketing is interdisciplinary, utilizing economic and psychological concepts with special emphasis on measurement and estimation. This unique Handbook provides current knowledge of pricing in a single, authoritative volume and brings together new cutting-edge research by established marketing scholars on a range of topics in the area. The environment in which pricing decisions and transactions are implemented has changed dramatically, mainly due to the advent of the Internet and the practices of advance selling and yield management. Over the years, marketing scholars have incorporated developments in game theory and microeconomics, behavioral decision theory, psychological and social dimensions and newer market mechanisms of auctions in their contributions to pricing research. These chapters, specifically written for this Handbook, cover these various developments and concepts as applied to tackling pricing problems. Academics and doctoral students in marketing and applied economics, as well as pricing-focused business practitioners and consultants, will appreciate the state-of-the-art research herein.
Book Synopsis Plant Behaviour and Intelligence by : A. J. Trewavas
Download or read book Plant Behaviour and Intelligence written by A. J. Trewavas and published by . This book was released on 2014 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a convincing argument for the view that whole cells and whole plants growing in competitive wild conditions show aspects of plant behaviour that can be accurately described as 'intelligent'. Trewavas argues that behaviour, like intelligence, must be assessed within the constraints of the anatomical and physiological framework of the organism in question. The fact that plants do not have centralized nervous systems for example, does not exclude intelligent behaviour. Outside the human dimension, culture is thought largely absent and fitness is the biological property of value. Thus, solving environmental problems that threaten to reduce fitness is another way of viewing intelligent behaviour and has a similar meaning to adaptively variable behaviour. The capacity to solve these problems might be considered to vary in different organisms, but variation does not mean absence. By extending these ideas into a book that allows a critical and amplified discussion, the author hopes to raise an awareness of the concept of purposive behaviour in plants.
