Search for dissertations about: "calculation model"

Showing result 1 - 5 of 404 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; Linköpings universitet.; Linköpings universitet.; [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; KTH.; Statens väg- och transportforskningsinstitut.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; performance predictions; LTPP; rut; crack; statistical modeling; 32 Road: Pavement design; 32 Road: Pavement design; Cracking; Rutting wheel ; Prediction; Calculation; Mathematical model; Flexible pavement; Performance; Sprickbildning; Spårbildning; Förutsägelser; Beräkning; Matematiska modeller; Flexibla överbyggnader; Prestanda;

    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; Högskolan i Jönköping.; [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. Developing and evaluating dose calculation models for verification of advanced radiotherapy

    University dissertation from Umeå : Umeå universitet

    Author : Jörgen Olofsson; Umeå universitet.; [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

  5. 5. Calculation and Measurement Methods for the Performance of Solar Collectors. Models of Flat Plate Collectors, Transparent Insulation and Efficiency Factors

    University dissertation from Lund University, Lund Institute of Technology, Div. of Energy and Building Design, P.O. Box 118, SE-221 00 LUND, Sweden

    Author : Bengt Hellström; Lund University.; Lunds universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transparent insulation; Test method; Calculation method; Concentrating collector; Efficiency factor; Fin efficiency; Flat plate collector; Heat conductivity; Honeycomb; Measurement method; Performance; Solar transmittance; Solar collector; Collector model; Energy research; Energiforskning;

    Abstract : This thesis deals with models of flat plate collectors, transparent insulation and efficiency factors. An equation for the energy output from a glazed flat plate collector is derived by modelling the collector efficiency factor, F´ as the sum of a constant and a temperature dependent part. READ MORE