This text considers the problem of the dynamic fluid-structure interaction between a finite elastic structure and the acoustic field in an unbounded fluid-filled exterior domain. The exterior acoustic field is modelled through a boundary integral equation over the structure surface. However, the classical boundary integral equation formulations of this problem either have no solutions or do not have unique solutions at certain characteristic frequencies (which depend on the surface geometry) and it is necessary to employ modified boundary integral equation formulations which are valid for all frequencies. The particular approach adopted here involves an arbitrary coupling parameter and the effect that this parameter has on the stability and accuracy of the numerical method used to solve the integral equation is examined. The boundary integral analysis of the exterior acoustic problem is coupled with a finite element analysis of the elastic structure in order to investigate the interaction between the dynamic behaviour of the structure and the associated acoustic field. Recently there has been some controversy over whether or not the coupled problem also suffers from the non-uniqueness problems associated with the classical integral equation formulations of the exterior acoustic problem. This question is resolved by demonstrating that .the solution to the coupled problem is not unique at the characteristic frequencies and that it is necessary to employ an integral equation formulation valid for all frequencies.
Explains why it is important to sustain native plants & animals in agricultural landscapes, outlines issues in developing & implementing practical approaches to safeguard native biodiversity in rural areas. Considers ecological & agricultural issues that determine what native biodiversity occurs in farmland.--
Provides the essential framework for under-graduate and post-graduate courses in conservation biology and natural resource management by covering the complete array of topics central to these fields. Lindenmayer from ANU, ACT and Burgman from University of Melbourne, Vic.
An overview of relationships between landscape change, habitat fragmentation and biodiversity conservation, using key lessons from the Tumut Fragmentation Study.
Forest Pattern and Ecological Process is a major synthesis of 25 years of intensive research about the montane ash forests of Victoria, which support the world's tallest flowering plants and several of Australia's most high profile threatened and/or endangered species. It draws together major insights based on over 170 published scientific papers and books, offering a previously unrecognised set of perspectives of how forests function. The book combines key strands of research on wildfires, biodiversity conservation, logging, conservation management, climate change and basic forest ecology and management. It is divided into seven sections: introduction and background; forest cover and the composition of the forest; the structure of the forest; animal occurrence; disturbance regimes; forest management; and overview and future directions. Illustrated with more than 200 photographs and line drawings, Forest Pattern and Ecological Process is an essential reference for forest researchers, resource managers, conservation and wildlife biologists, ornithologists and mammalogists, and policy makers, as well as general readers with interests in wildlife and forests. Features: * The extent of synthesis at a range of key levels * The depth of new perspectives on forest processes and ecological patterns in one of the world's truly great forests - the montane ash forests * The breadth of past and very current research that is both pure and applied * The range of key topics and how they are inter-twined - wildfires, biodiversity conservation, logging, conservation management, climate change and basic forest ecology and management
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