Sökning: "södergren"

Visar resultat 1 - 5 av 27 avhandlingar innehållade ordet södergren.

  1. 1. Asymptotic Problems on Homogeneous Spaces

    Författare :Anders Södergren; Andreas Strömbergsson; Dennis Hejhal; Jens Marklof; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analysis on homogeneous spaces; hyperbolic manifolds; spectral theory; equidistribution; the space of lattices; length statistics; Poisson process; moments; Epstein zeta function; value distribution; height function.; MATHEMATICS; MATEMATIK; Mathematics; Matematik;

    Sammanfattning : This PhD thesis consists of a summary and five papers which all deal with asymptotic problems on certain homogeneous spaces. In Paper I we prove asymptotic equidistribution results for pieces of large closed horospheres in cofinite hyperbolic manifolds of arbitrary dimension. LÄS MER

  3. 2. On the Uniform Equidistribution of Closed Horospheres in Hyperbolic Manifolds

    Författare :Anders Södergren; Andreas Strömbergsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Sammanfattning : We prove equidistribution results for (pieces of) closed horospheres in cofinite hyperbolic manifolds of dimension n+1, using spectral methods. This extends earlier results by Hejhal [Hej2] and Str¨ombergsson [St1] in dimension 2... LÄS MER

  4. 3. Decentralisering : förändring i företag och arbetsliv

    Författare :Birgitta Södergren; Handelshögskolan i Stockholm; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : I denna avhandling presenteras resultaten från en empirisk undersökning med syfte att granska effekterna av decentralisering. Hur påverkas organisationen "bakom fasaden av ord"? Vilka positiva och negativa effekter kan urskiljas? Boken innehåller också en genomgång av tidigare teorier om decentralisering. LÄS MER

  5. 4. Öppna spisar : metod som förhindrar öppna spisar att ryka in

    Författare :David Södergren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering; Miljöteknik;

    Sammanfattning : The primary purpose of this thesis is to account for a new method of limiting the risk of smoke leaking out from the open fireplace into the room. The improved functionality is obtained by adding a turnplate to the open fireplace mounted horizontally inside the lower edge at the hood of the open fire. LÄS MER

  7. 5. Lipid peroxidation in vivo : Evaluation and application of methods for measurement

    Författare :Eva Södergren; Uppsala universitet; []
    Nyckelord :Medical sciences; lipid peroxidation; hydroperoxides; F2-isoprostanes; MDA; prostaglandins; measurement; carbon tetrachloride; vitamin E; dietary fat quality; rapeseed oil; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Geriatrics; geriatrik;

    Sammanfattning : Lipid peroxidation is thought to be an important factor in the pathophysiology of a number of diseases and in the process of ageing, but its measurement in vivo has been difficult. The aim of this thesis was to evaluate methods for measurement of lipid peroxidation in vivo that are suitable for clinical investigations, and to apply these methods in animal and human studies investigating basal conditions and situations associated with increased lipid peroxidation. LÄS MER