Sökning: "David Eklund"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden David Eklund.

  1. 1. Algebraic C*-actions and homotopy continuation

    Författare :David Eklund; Sandra Di Rocco; Chris Peterson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; torus actions; homotopy continuation; MATHEMATICS; MATEMATIK;

    Sammanfattning : Let X be a smooth projective variety over C equipped with a C*-action whose fixed points are isolated. Let Y and Z be subvarieties of complementary dimentions in X which intersect properly. LÄS MER

  3. 2. Topics in computation, numerical methods and algebraic  geometry

    Författare :David Eklund; Sandra di Rocco; Wolfram Decker; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Algebra och geometri;

    Sammanfattning : This thesis concerns computation and algebraic geometry. On the computational side we have focused on numerical homotopy methods. These procedures may be used to numerically solve systems of polynomial equations. The thesis contains four papers. LÄS MER

  4. 3. Modern multimodal methods in brain MRI

    Författare :David Abramian; Anders Eklund; Evren Özarslan; Ida Blystad; Hamid Behjat; Jesper Andersson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MRI; Functional MRI; Diffusion MRI; Graph signal processing; Deep learning;

    Sammanfattning : Magnetic resonance imaging (MRI) is one of the pillars of modern medical imaging, providing a non-invasive means to generate 3D images of the body with high soft-tissue contrast. Furthermore, the possibilities afforded by the design of MRI sequences enable the signal to be sensitized to a multitude of physiological tissue properties, resulting in a wide variety of distinct MRI modalities for clinical and research use. LÄS MER

  5. 4. Adolescents at risk of persistent antisocial behaviour and alcohol problems : The role of behaviour, personality and biological factors

    Författare :Jenny M. Eklund; Britt af Klinteberg; Per-Anders Rydelius; David P. Farrington; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; adolescence; gender; hyperactive behaviour; biological vulnerability; personality; norm breaking behaviour; criminality; violence; alcohol problems; Psychology; Psykologi;

    Sammanfattning : Antisocial behaviour and alcohol problems are areas of great concern to society, not only associated with personal and emotional costs for the affected individuals and their victims, but also with major societal financial costs. What makes some individuals more likely than others to develop these kinds of problems? The general aim of this thesis was to explore the role of individual characteristics in the development of antisocial behaviour and alcohol problems. LÄS MER

  7. 5. Kulturgeografin tar plats i välfärdsstaten : Vetenskapliga modeller och politiska reformer under efterkrigstidens första decennier

    Författare :Pär Wikman; Per Lundin; Niklas Stenlås; Magnus Eklund; David Larsson Heidenblad; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Postwar social science; history of geography; history of planning; central place theory; Torsten Hägerstrand; municipal reforms; reform technocrats;

    Sammanfattning : The aim of this study is to explain why human geography in Sweden became a planning science during the postwar period. Human geography had developed a sophisticated use of abstract models. The proliferation of models within in the social sciences was an international phenomenon during the postwar period. LÄS MER