Search for dissertations about: "calculation model"

Showing result 1 - 5 of 463 swedish dissertations containing the words calculation model.

  1. 1. Cluster model of disordered systems : application to doped semiconductors and a simple model polymer

    University dissertation from Vimmerby : VTT-Grafiska

    Author : Rolf G. Riklund; [1982]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis we study with an extended cluster model calculation the combined effect of disorder and electron-electron interaction on the electronic structure of doped semiconductors and a simple model polymer chain. First a one-band model using a Hartree calculation is compared to other authors result for the impurity band using less realistic Hamiltonians. READ MORE

  2. 2. Modeling pavement performance based on data from the Swedish LTPP database predicting cracking and rutting

    University dissertation from Stockholm : Kungliga tekniska högskolan. Institutionen för transportvetenskap

    Author : Markus Svensson; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cracking; Rutting wheel ; Prediction; Calculation; Mathematical model; Flexible pavement; Performance; Sprickbildning; Spårbildning; Förutsägelser; Beräkning; Matematiska modeller; Flexibla överbyggnader; Prestanda; 32 Road: Pavement design; 32 Road: Pavement design;

    Abstract : The roads in our society are in a state of constant degradation. The reasons for this are many, and therefore constructed to have a certain lifetime before being reconstructed. To minimize the cost of maintaining the important transport road network high quality prediction models are needed. READ MORE

  3. 3. A phenomenological model of turbulence in steady two-dimensional separated flows

    University dissertation from Stockholm : Kungliga tekniska högskolan. Institutionen för transportvetenskap

    Author : Roy Holmberg; [1971]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Calculation; Turbulent flow; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : .... READ MORE

  4. 4. On Probability in Geotechnics. Random Calculation Models Exemplified on Slope Stability Analysis and Ground-Superstructure Interaction

    University dissertation from Stockholm : Kungliga tekniska högskolan. Institutionen för transportvetenskap

    Author : Claes Alén; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; random; creep; slope stability; calculation; interaction; design; limit state; probability; statistics; geotechnics;

    Abstract : The thesis deals with uncertainty in calculation modelling. Emphasis is put on the design state. Design is a chain of decisions under uncertainty. A probabilistic approach is used to describe the uncertainty and calculations as a way to reveal the uncertainty. READ MORE

  5. 5. Developing and evaluating dose calculation models for verification of advanced radiotherapy

    University dissertation from Umeå : Umeå universitet

    Author : Jörgen Olofsson; Mikael Karlsson; Anders Ahnesjö; Crister Ceberg; [2006]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation therapy; high-energy photons; dose calculation; multi-source model; pencil kernel; uncertainties; action levels; MEDICINE Physiology and pharmacology Radiological research Radiological physics; MEDICIN Fysiologi och farmakologi Radiologisk forskning Radiofysik;

    Abstract : A prerequisite for modern radiotherapy is the ability to accurately determine the absorbed dose (D) that is given to the patient. The subject of this thesis has been to develop and evaluate efficient dose calculation models for high-energy photon beams delivered by linear accelerators. READ MORE