Search for dissertations about: "Multiple scales"

Showing result 1 - 5 of 248 swedish dissertations containing the words Multiple scales.

2. 1. Searching for food in complex environments : Integrating processes at multiple spatial scales

   Author : Thomas Alexander Verschut; Peter Hambäck; Peter Anderson; Ring Cardé; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Associational effects; Natal experiences; Olfaction; Oviposition; Plant Ecology; växtekologi;

   Abstract : Resources are often unevenly distributed through the environment, resulting in a challenging task for insects to locate food, mates and oviposition sites. Consequently, there is an ongoing need to unravel how insects rely on behavioural and sensory traits while searching for resources in heterogeneous environments. READ MORE

4. 2. Multiple Time Scales and Longitudinal Measurements in Event History Analysis

   Author : Danardono; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; Cox regression; multiple events; proportiona hazards; random effects; survival analysis; time-dependent covariates; time origin; Statistik; Statistics; Statistik; Statistics; statistik;

   Abstract : A general time-to-event data analysis known as event history analysis is considered. The focus is on the analysis of time-to-event data using Cox's regression model when the time to the event may be measured from different origins giving several observable time scales and when longitudinal measurements are involved. READ MORE

5. 3. Treatment with the monoclonal antibody rituximab in Multiple Sclerosis : a study based on an academic clinical trial

   Author : Pierre de Flon; Anders Svenningsson; Martin Gunnarsson; Katarina Laurell; Sten Fredrikson; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Multiple sclerosis; Rituximab; Cytokines; Immunological profile; Neurofilament light; Treatment satisfaction; neurologi; Neurology;

   Abstract : Background: Multiple sclerosis (MS) is a chronic, inflammatory disease, affecting the central nervous system. A growing number of disease modifying treatment alternatives entails a need for an individualised risk-benefit- convenience analysis in the counselling of patients and methods to monitor the treatment effect, including markers for subclinical inflammation. READ MORE

6. 4. Reiterated homogenization and G-convergence for some sequences of monotone operators

   Author : Marianne Olsson; Mårten Gulliksson; Anders Holmbom; Nils Svanstedt; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Homogenization; G-convergence; Multiple scales; Monotone operators; MATHEMATICS; MATEMATIK;

   Abstract : In this thesis, the main focus is on G-convergence and homogenization of monotone parabolic equations with multiple scales. This kind of equation is examined with respect to existence and uniqueness of the solution, in view of the properties of some monotone operators. READ MORE

7. 5. Fire behaviour of upholstered furniture component materials at multiple scales

   Author : Konrad Wilkens Flecknoe-Brown; Avdelningen för Brandteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fire; upholstered furniture; Polyurethane; Scaling; Experimental; Modeling; fabric;

   Abstract : In this research, both experimental test methods and computer models were used to characterise the thermal decomposition processes of selected upholstered furniture component materials, namely; flexible polyurethane foam and a range of different fabric coverings. This was first done at some of the smallest, simplest levels available, and how these materials were tested and the methods chosen to investigate them, was examined. READ MORE