Search for dissertations about: "mathematical simulations"

Showing result 1 - 5 of 230 swedish dissertations containing the words mathematical simulations.

  1. 1. Weld Pool Simulations

    University dissertation from Göteborg : Department of Mathematical Sciences

    Author : Marcus Edstorp; Högskolan Väst.; Göteborgs universitet.; Gothenburg University.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MATHEMATICS Applied mathematics; MATEMATIK Tillämpad matematik; TECHNOLOGY Industrial engineering and economy Manufacturing engineering and work sciences Manufacturing engineering; TEKNIKVETENSKAP Industriell teknik och ekonomi Produktion och arbetsvetenskap Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik; Arc Welding; Weld Pool; Multiphysics Simulations; Moving Boundaries; Free Surfaces; Mesh Motion; Two-Phase Flow; Incompressible Flow; Electromagnetics; Finite Element Methods;

    Abstract : This investigation is devoted to the study of welding and its effect on the workpiece, focusing on the thermo and fluid dynamical phenomena occuring during a autogenous or nonautogenous arc fusion welding process. Its aim is to simulate the behaviour of the weld pool and analyze the consequence of the solid-liquid phase change, thus obtaining a methodology for predicting the appearance of weld defects related to solidification and cooling. READ MORE

  2. 2. Mathematical Models in Cellular Biophysics

    University dissertation from Stockholm : KTH

    Author : Jacob Kowalewski; KTH.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Calcium oscillations; Diffusion; Dopamine receptors; Mathematical models; Computer simulations; FRAP; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : Cellular biophysics deals with, among other things, transport processes within cells. This thesis presents two studies where mathematical models have been used to explain how two of these processes occur.Cellular membranes separate cells from their exterior environment and also divide a cell into several subcellular regions. READ MORE

  3. 3. Mathematical and Physical Simulations of BOF Converters

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Xiaobin Zhou; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BOF; physical model; mathematical model; mixing time; kinetic enregy; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : The purpose of this study is to develop mathematical models to explore the mixing and its related phenomena in converter bath. Specifically, first, a mathematical model of a physical model converter, which was scaled down to 1/6th of a 30 t vessel, was developed in this study. READ MORE

  4. 4. Derivative Prices for Models using Levy Processes and Markov Switching

    University dissertation from Mathematical Statistics, Centre for Mathematical Sciences, Lund University

    Author : Sebastian Rasmus; Lund University.; Lunds universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; programming; operations research; Statistics; Regime switching; Levy processes; Derivative pricing; Computer simulations; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik;

    Abstract : This thesis contributes to mathematics, finance and computer simulations. In terms of mathematics this thesis concerns applied probability and Lévy processes and from the financial point of view the thesis concerns derivative pricing. Within these two areas several simulation techniques are investigated. The thesis is organized as follows. READ MORE

  5. 5. Regression Analysis of Censored Data with Applications in Perimetry

    University dissertation from Mathematical Statistics, Centre for Mathematical Sciences, Lund University

    Author : Anna Lindgren; Lund University.; Lunds universitet.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; censored covariate; L_1 minimization; right-censoring; Quantile regression;

    Abstract : This thesis treats regression analysis when either the dependent or the independent variable is censored. We deal with quantile regression when the dependent variable is censored. READ MORE