Download or read book Mod lisation et analyse des interactions entre coulements surface libre et objets flottants written by Fabien Wahl and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse traite de la modélisation et de la résolution numérique d'écoulements en présence d'une structure à la surface. On considère la problématique d'un objet flottant sur un grand domaine. Les écoulements sous la banquise et la production d'énergie renouvelable grâce à des bouées sont des applications potentielles de ce travail. Nous dérivons un modèle de type Saint-Venant avec une contrainte de congestion supplémentaire. La contrainte de congestion est un défi pour la résolution numérique d'équations hyperboliques. Nous proposons alors un modèle unifié basé sur une relaxation pseudo-compressible pour la résolution. Nous identifions les propriétés nécessaires à la résolution numérique et décrivons l'adaptation d'un schéma volumes finis. La préservation de l'état d'équilibre du lac au repos ainsi qu'une loi de dissipation pour l'énergie mécanique sont démontrées sous une condition non-restrictive sur le pas de temps. Pour prendre en compte un objet flottant librement, nous introduisons un couplage entre le modèle de Saint-Venant congestionné et les équations du mouvement données par le principe fondamental de la dynamique en nous concentrant sur l'énergie du système couplé. Cet aspect est en effet d'un intérêt majeur dans la production d'énergie. Un schéma de Newmark est utilisé pour le solide et couplé à la résolution numérique pour le fluide. Nous proposons une correction entropique basée sur un choix de discrétisation particulier des termes de couplage pour assurer une loi de dissipation au niveau discret. La méthode est validée en dimension un sur des solutions analytiques stationnaires et non-stationnaires.
Download or read book The Concept of Negritude in the Poetry of Leopold Sedar Senghor written by Sylvia Washington Ba and published by Princeton University Press. This book was released on 2015-03-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Negritude has been defined by Léopold Sédar Senghor as "the sum of the cultural values of the black world as they are expressed in the life, the institutions, and the works of black men." Sylvia Washington Bâ analyzes Senghor's poetry to show how the concept of negritude infuses it at every level. A biographical sketch describes his childhood in Senegal, his distinguished academic career in France, and his election as President of Senegal. Themes of alienation and exile pervade Senghor's poetry, but it was by the opposition of his sensitivity and values to those of Europe that he was able to formulate his credo. Its key theme, and the supreme value of black African civilization, is the concept of life forces, which are not attributes or accidents of being, but the very essence of being. Life is an essentially dynamic mode of being for the black African, and it has been Senghor's achievement to communicate African intensity and vitality through his use of the nuances, subtleties, and sonorities of the French language. In the final chapter Sylvia Washington Bâ discusses the future of Senghor's belief that the black man's culture should be recognized as valid not simply as a matter of human justice, but because the values of negritude could be instrumental in the reintegration of positive values into western civilization and the reorientation of contemporary man toward life and love. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
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 Culture urban future written by UNESCO and published by UNESCO Publishing. This book was released on 2016-12-31 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report presents a series of analyses and recommendations for fostering the role of culture for sustainable development. Drawing on a global survey implemented with nine regional partners and insights from scholars, NGOs and urban thinkers, the report offers a global overview of urban heritage safeguarding, conservation and management, as well as the promotion of cultural and creative industries, highlighting their role as resources for sustainable urban development. Report is intended as a policy framework document to support governments in the implementation of the 2030 Agenda for Sustainable Urban Development and the New Urban Agenda.
Download or read book Agricultural Compendium for Rural Development in the Tropics and Subtropics written by and published by Elsevier Science & Technology. This book was released on 1985 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ilaco handbook
Download or read book Applications of the Theory of Plasticity in Soil Mechanics written by Jean Salençon and published by John Wiley & Sons. This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Continuum Mechanics written by Jean Salencon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outstanding approach to continuum mechanics. Its high mathematical level of teaching together with abstracts, summaries, boxes of essential formulae and numerous exercises with solutions, makes this handbook one of most complete books in the area. Students, lecturers, and practitioners will find this handbook a rich source for their studies or daily work.
Download or read book How to Design Wastewater Systems for Local Conditions in Developing Countries written by David M. Robbins and published by IWA Publishing. This book was released on 2014-03-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.
Download or read book Nature and Culture in the Democratic Republic of Congo written by and published by . This book was released on 2004 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Analog and Digital Computers in Hydrology Proceedings of the Tucson Symposium written by tucson Symposium on the use of analog and digital computers in hydrology and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compendium of Sanitation Systems and Technologies written by Elizabeth Tilley and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yield Design written by Jean Salençon and published by Wiley-ISTE. This book was released on 2013-05-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the middle of the 20th Century yield design approaches have been identified with the lower and upper bound theorem of limit analysis theory – a theory associated with perfect plasticity. This theory is very restrictive regarding the applicability of yield design approaches, which have been used for centuries for the stability of civil engineering structures. This book presents a theory of yield design within the original “equilibrium/resistance” framework rather than referring to the theories of plasticity or limit analysis; expressing the compatibility between the equilibrium of the considered structure and the resistance of its constituent material through simple mathematical arguments of duality and convex analysis results in a general formulation, which encompasses the many aspects of its implementation to various stability analysis problems. After a historic outline and an introductory example, the general theory is developed for the three-dimensional continuum model in a versatile form based upon simple arguments from the mathematical theory of convexity. It is then straightforwardly transposed to the one-dimensional curvilinear continuum, for the yield design analysis of beams, and the two-dimensional continuum model of plates and thin slabs subjected to bending. Field and laboratory observations of the collapse of mechanical systems are presented along with the defining concept of the multi-parameter loading mode. The compatibility of equilibrium and resistance is first expressed in its primal form, on the basis of the equilibrium equations and the strength domain of the material defined by a convex strength criterion along with the dual approach in the field of potentially safe loads, as is the highlighting of the role implicitly played by the theory of yield design as the fundamental basis of the implementation of the ultimate limit state design (ULSD) philosophy with the explicit introduction of resistance parameters. Contents 1. Origins and Topicality of a Concept. 2. An Introductory Example of the Yield Design Approach. 3. The Continuum Mechanics Framework. 4. Primal Approach of the Theory of Yield Design. 5. Dual Approach of the Theory of Yield Design. 6. Kinematic Exterior Approach. 7. Ultimate Limit State Design from the Theory of Yield Design. 8. Optimality and Probability Approaches of Yield Design. 9. Yield Design of Structures. 10. Yield Design of Plates: the Model. 11. Yield Design of Plates Subjected to Pure Bending. About the Authors Jean Salençon is Emeritus Professor at École polytechnique and École des ponts et chaussées, ParisTech, France. Since 2009 he has been a member of the Administrative Board of CNRS (Paris, France). He has received many awards including the Légion d’Honneur (Commander), Ordre National du Mérite (Officer) and Palmes Académiques (Commander). His research interests include structure analysis, soil mechanics and continuum mechanics.
Download or read book Water Saving in Agriculture written by and published by . This book was released on 2008 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
