Bøger udgivet af ISTE Press Ltd - Elsevier Inc

Failure in Geomaterials offers a unified view of material failure as an instability of deformation modes framed within the theory of bifurcation. Using mathematical rigor, logic, physical reasoning and basic principles of mechanics, the authors develop the fundamentals of failure in geomaterials based on the second-order work criterion. Various forms of rupture modes and material instabilities in granular materials are explored both analytically and numerically with lab experimental observations on sand as a backdrop. The authors provide a clear picture of inelastic deformations and failure of geomaterials under various loading conditions. A unique feature of the book is the systematic application of the developed theory to the failure analysis of some selected engineering problems such as soil nailing, landslides, energy resource extraction, and internal erosion in soils.

The book offers a particular methodology for using neural networks to solve control problems of nonlinear systems interacting directly (mobile robot exoskeleton type) or indirectly with human (redundant robot manipulators serial or parallel). In addition, they give novel perspectives and research ideas for further strengthening the presence of humans in the control loop (intention, thought, etc.). The robots used in our illustrations have been designed in collaboration with industry.

Despite the many benefits of RFID, deployment is still hindered by several factors, both economic and technological. The most limiting factor at this time is the cost of the unit tag. In this book, we focus on the development of chipless RFID tag, which represents a new family of low cost tags. In order to increase the coding capacity of the tag, a new design method based on RCS synthesis is proposed. Although this new approach has been developed in the simplified context of chipless RFID, it can be extended to other domains such as reflect arrays or Frequency selective surfaces. Includes a theoretical presentation of scattering phenomenon in electromagnetism regrouping elements from classical RFID, pulse radar and antenna theoryFeaturing a new coding technique based on magnitude level is presented and characterized for different kinds of tags.For the first time, RCS synthesis based on a physical approach is proposed for a wide frequency band

This book provides a review of the current understanding of the behavior of non-spherical particle suspensions providing experimental results, rheological models and numerical modeling. In recent years, new models have been developed for suspension rheology and as a result applications for nanocomposites have increased. The authors tackle issues within experimental, model and numerical simulations of the behavior of particle suspensions. Applications of non-spherical particle suspension rheology are widespread and can be found in organic matrix composites, nanocomposites, biocomposites, fiber-filled fresh concrete flow, blood and biologic fluids.Understand how to model and predict the final microstructure and properties of particle suspensionsExplores nano, micro, meso and macro scalesRheology, thermomechanical and electromagnetic physics are discussed

This book presents a crisis scenario generator with black swans, black butterflies and worst case scenarios. It is the most useful scenario generator that can be used to manage assets in a crisis-prone period, offering more reliable values for Value at Risk (VaR), Conditional Value at Risk (CVaR) and Tail Value at Risk (TVaR). Hazardous Forecasts and Crisis Scenario Generator questions how to manage assets when crisis probability increases, enabling you to adopt a process for using generators in order to be well prepared for handling crises.Evaluates risk-oriented philosophy, forecast risk-oriented philosophy and its processesFeatures scenario-building processes, with an emphasis on main and extreme scenariosDiscusses asset management processes using a generator methodology to avoid risk understatement and increase optimization.

This book addresses disaster risk reduction (DRR) policies, focusing on reducing the paradox that exists between the compulsory implementation of DRR policies and continuing limitationsThe authors use their knowledge of the ever-evolving threats associated with disasters and their prevention to investigate this famous paradox and propose solutions that will help readers understand and reconsider its existence.The authors also discuss conditionings behind this paradox, helping readers understand the existing solutions, also suggesting how to reduce the limitations of DRR policies.

Gravity hazards are a major concern to those living in mountainous areas. To protect infrastructure and human life in these areas, engineers require numerical tools for trajectory analysis, for application from fragmental rockfalls to large-scale avalanches or landslides.This book explores state-of-the-art methods to model the propagation (flows and stops) of masses, using the discrete element method (DEM) to study the evolution of kinetics during an event. Taking into account the shape of the blocks and the topology of the terrain provides an explicit and sophisticated consideration of geometries, eliminating the need for stochastic inputs to rockfall simulations. This method is validated experimentally, before the authors apply it to real case studies. The book ends with an introduction to and comparison with the material point method (MPM), a new and promising approach able to bridge the gap between cases dominated by discreteness and those involving a very large number of elements.Engineering consulting firms, researchers and students should find the approaches outlined in this book useful, whether designing prevention and protection systems for gravity hazards, or exploring new ways to model gravity hazards.