Search for dissertations about: "natural experiments"

Showing result 1 - 5 of 3094 swedish dissertations containing the words natural experiments.

  2. 1. Spatial heterogeneity and biotic interactions : scaling from experiments to natural systems

    Author : Ulf Bergström; Göran Englund; Erik Bonsdorff; Sebastian Diehl; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; zooekologi; Animal Ecology;

    Abstract : Much of current ecological theory stems from experimental studies. These studies have often been conducted in closed systems, at spatial scales that are much smaller than the systems of interest. READ MORE

  4. 2. High Power Microwave Sources : design and experiments

    Author : Cecilia Möller; Nils Brenning; Stefan Silfverskiöld; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space physics; Rymdfysik; Plasma physics; Plasmafysik;

    Abstract : High-Power Microwaves (HPM) can be used to intentionally disturb or destroy electronic equipment at a distance by inducing high voltages and currents. This thesis presents results from experiments with a narrow band HPM source, the vircator. READ MORE

  5. 3. Molecular structure and dynamics of liquid water : Simulations complementing experiments

    Author : Daniel Schlesinger; Lars G. M. Pettersson; Paola Gallo; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; liquid water; supercooled water; molecular simulation; evaporative cooling; teoretisk fysik; Theoretical Physics;

    Abstract : Water is abundant on earth and in the atmosphere and the most crucial liquid for life as we know it. It has been subject to rather intense research since more than a century and still holds secrets about its molecular structure and dynamics, particularly in the supercooled state, i. e. the metastable liquid below its melting point. READ MORE

  6. 4. Sensor Platform for 3D Microwave Interferometry Imaging : Theory and Experiments

    Author : Emil Nilsson; Högskolan i Halmstad; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Microwave Interferometry Imaging; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE

  7. 5. Modelling of the Fletcher-Gent effect and obtaining hyperelastic parameters for filled elastomers

    Author : Rickard Österlöf; Leif Kari; Per-Erik Austrell; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; filled elastomers; natural rubber; carbon black; Fletcher-Gent effect; Payne-effect; finite strain; hyperelastic;

    Abstract : The strain amplitude dependency , i.e. the Fletcher-Gent effect and Payne effect, and the strain rate dependency of rubber with reinforcing fillers is modelled using a modified boundary surface model and implemented uniaxially. READ MORE