Search for dissertations about: "borrvall"

Found 5 swedish dissertations containing the word borrvall.

  1. 1. Biodiversity and Species Extinctions in Model Food Webs

    Author : Charlotte Borrvall; Bo Ebenman; Owen Petchey; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; biodiversity; food webs; redundancy; relaxation time; stability; stochasticity; species deletion; species extinction; Biology; Biologi;

    Abstract : Many of the earth’s ecosystems are experiencing large species losses due to human impacts such as habitat destruction and fragmentation, climate change, species invasions, pollution, and overfishing. Due to the complex interactions between species in food webs the extinction of one species could lead to a cascade of further extinctions and hence cause dramatic changes in species composition and ecosystem processes. READ MORE

  2. 2. The response of model food webs to species loss : secondary extinctions and relaxation times

    Author : Charlotte Borrvall; Richard Law; Linköpings universitet; []
    Keywords : ;

    Abstract : Current destruction and fragmentation of natural habitats is predicted to cause great future losses in biodiversity (Pimm et al. 1995; Hughes et al. 1997; Sala et al. 2000). READ MORE

  3. 3. Computational topology optimization in continuum mechanics

    Author : Thomas Borrvall; Martin P. Bendsøe; Linköpings universitet; []
    Keywords : ;

    Abstract : This dissertation concerns theoretical and computational methodologies in topology optimization in continuum mechanics.A general procedure for treating problems of this kind starts with the establishment of a well-posed continuum problem formulation, in the sense that one can prove existence of at least one solution to the problem. READ MORE

  4. 4. Computational topology optimization of elastic continua by design restriction

    Author : Thomas Borrvall; Linköpings universitet; []
    Keywords : ;

    Abstract : This thesis is concerned with theoretical and computational approaches in topology optimization of elastic continua. It consists of three papers.Paper I is a review of existing approaches for formulating and solving problems in topology optimization. READ MORE

  5. 5. Optimization in Continuum Flow Problems

    Author : Niclas Wiker; Anders Klarbring; Thomas Borrvall; Ole Sigmund; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; Continuum flow problem; Fluid mechanics; Strömningsmekanik;

    Abstract : The work presented in this dissertation was carried out at the Division ofMechanics, Department of Management and Engineering at Link¨oping University,between 2003 and 2008. It was supervised by Prof. READ MORE