Sökning: "operator model"
Visar resultat 11 - 15 av 237 avhandlingar innehållade orden operator model.
11. Model reduction for diffusion systems
Sammanfattning : Diffusion phenomena has been studied with a lot of interest, for a long time, due to its historical and practical significance. In the recent days it has thrown a lot of interest among control engineers, as more and more practical systems, varying from stock markets to environmental pollution, have been observed to involve diffusion. LÄS MER
12. Models in Neutrino Physics : Numerical and Statistical Studies
Sammanfattning : The standard model of particle physics can excellently describe the vast majorityof data of particle physics experiments. However, in its simplest form, it cannot account for the fact that the neutrinos are massive particles and lepton flavorsmixed, as required by the observation of neutrino oscillations. LÄS MER
13. Hydro-mechanical optimization of a wave energy converter
Sammanfattning : Wave energy conversion technology has gained popularity due to its potential to be-come one of the most preferred energy sources. Its high energy density and low car-bon footprint have inspired the development of many wave energy converter (WEC) technologies, few of which have made their way to commercialisation, and many are progressing. LÄS MER
14. Some Markov Processes in Finance and Kinetics : Markov Processes
Sammanfattning : This thesis consists of four papers. The first two papers treat extremes for L\'evy processes, while papers three and four treat the Kac model with unbounded collision kernel. LÄS MER
15. Predicting mortality by comorbidity for patients with hip arthroplasty: Prospective observational register studies of a nationwide Swedish cohort : Prediktion av död baserat på samsjuklighet efter höftprotesoperation: Prospektiva registerstudier utifrån en nationell svensk kohort
Sammanfattning : INTRODUCTION: Patients with total hip arthroplasty (THA) due to osteoarthritis (OA) are usually healthy, some with a remaining lifetime of several decades after surgery. Patients with hip arthroplasty due to a femoral neck fracture (FNF) are often old and frail with 13 % mortality within 90 days of surgery. LÄS MER