Sökning: "Karl Nilsson"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Karl Nilsson.

  1. 1. Numerical computations of wind turbine wakes and wake interaction

    Författare :Karl Nilsson; Dan Henningson; Stefan Ivanell; Thorsten Lutz; KTH; []
    Nyckelord :;

    Sammanfattning : When wind turbines are placed in farms, wake effects reduce the overall power production. Also, turbine loads are significantly increased since turbulence levels are high within the wake flow. LÄS MER

  3. 2. Numerical computations of wind turbine wakes and wake interaction : Optimization and control

    Författare :Karl Nilsson; Dan Henningson; Stefan Ivanell; Martin O. L. Hansen; KTH; []
    Nyckelord :Actuator disc method; Actuator line method; Blade element momentum method; Wind turbine wake; Wake interaction; CFD; LES; EllipSys3D;

    Sammanfattning : In the present thesis the wake flow behind wind turbines is analyzed numerically using large-eddy simulations. The wind turbine rotors are modeled by using either the actuator disc method or the actuator line method in which the blades are represented by body forces computed with airfoil data. LÄS MER

  4. 3. Mechanisms involved in macrophage phagocytosis of apoptotic cells

    Författare :Anna Nilsson; Per-Arne Oldenborg; Karl-Eric Magnusson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; macrophages; dendritic cells; phagocytosis; apoptotic cells; senescent erythrocytes; CD47; SIRPalpha; LRP1; calreticulin; Immunology; Immunologi; immunologi; Immunology;

    Sammanfattning : Efficient removal of apoptotic cells is critical for development, tissue remodelling, maintenance of homeostasis, and response to injury. Phagocytosis of apoptotic cells is mediated by many phagocytic receptors, soluble bridging molecules, and pro-phagocytic ligands on the surface of apoptotic cells. LÄS MER

  5. 4. In Search of Prototypes and Feminist Bank-Tellers: Exploring the Representativeness Heuristic

    Författare :Håkan Nilsson; Peter Juslin; Karl Halvor Teigen; Uppsala universitet; []
    Nyckelord :Psychology; Cognitive psychology; Subjective probability; Representativeness heuristic; PROBEX; Category learning; Cognitive modeling; Conjunction fallacy; Psykologi;

    Sammanfattning : According to the heuristics and biases approach, the representativeness heuristic (RH) is one of the heuristics available for assessing subjective probabilities (A. Tversky & D. Kahneman, 1974). A subjective probability assessed by the RH is determined by how representative the target object is of the target category. LÄS MER

  7. 5. Equality of opportunity, heterogeneity and poverty

    Författare :William Nilsson; Karl-Gustaf Löfgren; Tomas Sjögren; Anders Björklund; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Equality of opportunity; Semiparametric; Poverty; Heterogeneity; State dependence; Twins; Unemployment; Divorce; Spousal response; Selection; Panel data; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : Paper [I] studies equality of opportunity in Sweden. The distinction between circumstances that constrain an individual’s opportunities and the individual choices also affecting a particular outcome is the main idea of theories of equality of opportunity. LÄS MER