Management of Natural Resources, Sustainable Development And Ecological Hazards
Author: C. A. Brebbia et al. | Size: 13.65 MB | Format:PDF | Publisher: WIT Press / Computational Mechanics | Year: 2006 | pages: 839 | ISBN: 1845640489
Product Description:
The state of our planet continues to deteriorate at an alarming rate. We have arrived at a situation where we need to determine urgent solutions before we reach a point of irreversible damage. This book contains papers presented at the International Conference on the Management of Natural Resources, Sustainable Development and Ecological Hazards, which was held in Patagonia, Argentina. The Conference name was shortened to A‘The Ravage of the PlanetA’ to emphasize the urgency of the problems under discussion. Much has been written in different contexts about attaining sustainability but the concept itself needs to be defined within a framework of many different disciplines in order to arrive at optimal solutions. This book is therefore essentially trans-disciplinary and it is hoped that it will encourage research into appropriate sustainable solutions, i.e. those involving collaboration across a wide range of disciplines. The following topic areas are discussed: The re-encounter; Political and social issues; Planning and development; Ecology; Design and sustainability; Safety; Water resources; Management of complex systems under extreme conditions; Air; Soil; Energy.
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Numerical methods in geotechnical engineering : Proceedings of the Sixth European Conference on Numerical Methods in Geotechnical Engineering, Graz, Austria, 6-8 September 2006
Author: Helmut F Schweiger | Size: 62.8 MB | Format:PDF | Publisher: Taylor & Francis | Year: 2006 | pages: 808 | ISBN: 0415408229 ; 978-0415408226
An overview of recent developments in constitutive modelling, numerical implementation issues, and coupled and dynamic analysis. There is a special section dedicated to the numerical modelling of ground improvement techniques, with applications of numerical methods for solving practical boundary value problems, such as deep excavations, tunnels, shallow and deep foundations, embankments and slopes. These proceedings not only contain the latest scientific research, but also give valuable insight into the applications of numerical methods in solving practical engineering problems, thus narrowing the gap between advanced academic research and practical application.
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The vast expansion of transportation systems on land, sea and in the air throughout the twentieth century has allowed for the development of economic, social and political connections across the globe undreamed of by our ancestors. However, this expansion has brought with it familiar problems such as airport delays and gridlock in our major cities. Fortunately, parallel progress in system science and information technology can provide us with the appropriate tools for rational and efficient solutions to our exponentially increasing transportation demands. This encyclopedia addresses the analysis, modelling and control of today's and tomorrow's traffic and transportation systems in a concise, comprehensive single volume. Well over 100 articles have been specially commissioned, or revised from the acclaimed Systems & Control Encyclopedia, to provide an overview of and first reference to models, control methods and practical aspects of all forms of traffic and transportation systems with a particular emphasis on efficient utilization of available infrastructure, plus a consideration of their historical, organizational, economic and social impacts. The Concise Encyclopedia of Traffic & Transportation Systems will be essential for professional and academic scientists and engineers in any discipline concerned with the movement of people and materials.
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Title: "Time-dependent deformations and stresses in prestressed concrete structures"
Author: Maher Khalil Tadros
Editor: University of Calgary, 1975
No. of pages: 330
To teach the discrete element method (DEM) for modelling discontinuum media, using the commercial code UDEC (Universal Distinct Element Code). To teach the use of UDEC in the analysis of underground excavations in fractured rock masses. To discuss case histories of application of UDEC to the design of caverns and tunnels in jointed rock, in reference to cavern support and reinforcement, and groundwater flow.
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A discrete numerical model for granular assemblies
Author: CUNDALL, P. A. & STRACK, 0. D. L. | Size: 1.328 MB | Format:PDF | Publisher: Géotechnique | Year: 1979 | pages: 19
The distinct element method is a numerical model capable of describing the mechanical behaviour of assemblies of discs and spheres. The method is based on the use of an explicit numerical scheme in which the interaction of the particles is monitored contact by contact and the motion of the particles modelled particle by particle. The main features of the distinct element method are described. The method is validated by comparing force vector plots obtained from the computer program BALL with the corresponding plots obtained from a photoelastic analysis. The photoelastic analysis used for the comparison is the one applied to an assembly of discs by De Josselin de Jong and Verruijt (1969). The force vector diagrams
obtained numerically closely resemble those obtained photoelastically. It is concluded from this comparison that the distinct element method and the program BALL are valid tools for research into the behaviour of granular assemblies.
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