Search for dissertations about: "calculation model"

Showing result 11 - 15 of 516 swedish dissertations containing the words calculation model.

  2. 11. Field Theories and Vortices with Nontrivial Geometry

    Author : Kristel Torokoff; Antti Niemi; Masud Chaichian; Uppsala universitet; []
    Keywords : Theoretical physics; theoretical physics; gauge field theory; knot theory; spontaneously broken symmetry; effective model; numerical calculation; soliton; vortex; electromagnetic plasma; Teoretisk fysik;

    Abstract : This thesis investigates aspects of field theories and soliton solutions with nontrivial topology. In particular we explore the following effective models: a limited sector of the scalar Electroweak theory called extended Abelian Higgs model, and a classical mechanics model derived from the low energy SU(2) Yang-Mills theory. READ MORE

  4. 12. Truck Tyre Vibration Behaviour. Measurements and High Frequency Modelling

    Author : Penka Dinkova; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration response; mobility measurements; truck tyre; heavy vehicle; tyre-road noise; tyre; driving point mobility; transfer mobility; tire; vibration prediction; model;

    Abstract : To facilitate tyre-road noise prediction, a computationally efficient high frequency tyre model is needed. Such models are always a compromise between the desired accuracy and the need for simplicity. In addition the accuracy of models is often limited by the quality of the input data available. READ MORE

  5. 13. k-space Models in MRI Using the Concept of Partitions, Applications with special reference to Overhauser-enhanced techniques

    Author : J Stefan Petersson; Malmö Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; model; Physics; k-space; magnetic resonance imaging; Overhauser; simulation; Fysik;

    Abstract : A new model describing the image formation in magnetic resonance imaging (MRI) has been developed. The k-space description of MRI pulse sequences is expanded by introducing new dimensions to describe the phase dispersion due to flow, acceleration, jerk, diffusion and magnetic field inhomogeneities. READ MORE

  6. 14. Mathematical and Physical Simulations of BOF Converters

    Author : Xiaobin Zhou; Mikael Ersson; Pär Jönsson; Hans-Jürgen Odenthal; KTH; []
    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

  7. 15. Transmission of structure-borne sound in ships : applications to a prediction model

    Author : Ulf Orrenius; KTH; []
    Keywords : ;

    Abstract : This thesis examines transmission of structure-borne soundin rib-stiffened plate structures. In particular, theapplication of a prediction model for ships is analysed. Thismodel is based on a waveguide description of the structure. READ MORE