Search for dissertations about: "time-dependence"

Showing result 6 - 10 of 41 swedish dissertations containing the word time-dependence.

  2. 6. Linear and non-linear dynamics of non-autonomous flows

    Author : J. Simon Kern; Dan S. Henningson; Ardeshir Hanifi; Peter J. Schmid; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Time-dependent flows; linear stability; non-linear dynamics; Floquet analysis; optimally time-dependent modes; Teknisk mekanik; Engineering Mechanics;

    Abstract : Fluid flows subject to time-dependent external forces or boundary conditions are ubiquitous in biology and technical applications. Whether one considers birds flying by flapping their wings or the gust response of wind turbines, the flow is non-autonomous. READ MORE

  4. 7. Lumbar muscle fatigue : analysis of electromyography, endurance time and subjective factors in patients with lumbar disc herniation and healthy subjects

    Author : Åsa Dedering; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Disability; electromyography; endurance; gender; healthy subjects; lumbar disc herniation; lumbar extensor muscles; muscle fatigue; non-linear regression; recovery; subjective ratings;

    Abstract : The overall aim of the thesis was to investigate the relation between objectively and subjectively assessed lumbar muscle fatigue and subjective factors in patients with lumbar disc herniation and in healthy subjects. Eighty healthy subjects and 43 patients undergoing surgery for lumbar disc herniation and selected consecutively for the study participated. READ MORE

  5. 8. Mathematical modeling of fluid and solute transport in peritoneal dialysis

    Author : Jacek Waniewski; Karolinska Institutet; Karolinska Institutet; []
    Keywords : diffusion; convective transport; perfusion; lymphatic absorption; ultrafiltration; osmosis; continuous ambulatory peritoneal dialysis;

    Abstract : Optimization of peritoneal dialysis schedule and dialysis fluid composition needs, among others, methods for quantitative assessment of fluid and solute transport. Furthermore, an integrative quantitative description of physiological processes within the tissue, which contribute to the net transfer of fluid and solutes, is necessary for interpretation of the data and for predictions of the outcome of possible intervention into the peritoneal transport system. READ MORE

  6. 9. Development and Investigation of Reactivity Measurement Methods in Subcritical Cores

    Author : Johanna Wright; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; source modulation method; point kinetics; core loading; reactivity measurement; Feynman-alpha formulae; Accelerator Driven Systems ADS ; subcritical cores;

    Abstract : Subcriticality measurements during core loading and in future accelerator driven systems have a clear safety relevance. In this thesis two subcriticality methods are treated: the Feynman-alpha and the source modulation method. READ MORE

  7. 10. Electrochemical Switching in Conducting Polymers – Printing Paper Electronics

    Author : Payman Tehrani; Magnus Berggren; Ghassan Jabbour; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electrochemistry; Elektrokemi;

    Abstract : During the last 30 years a new research and technology field of organic electronic materials has grown thanks to a groundbreaking discovery made during the late 70’s. This new field is today a worldwide research effort focusing on exploring a new class of materials that also enable many new areas of electronics applications. READ MORE