Sökning: "Phenomenological Models"

Visar resultat 21 - 25 av 100 avhandlingar innehållade orden Phenomenological Models.

  1. 21. Ab initio and phenomenological modeling of materials related to CVD hard coatings

    Författare :Axel Forslund; Andrei V. Ruban; Paul Erhart; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : This thesis describes the work based on two different tools in computational materials science: a first-principles approach, namely that of density functional theory, and the CALPHAD approach.These two methods were used in this work to calculate properties of materials related to hard coatings, in particular coatings produced with chemical vapor deposition for the purpose of wear protection in cutting tools. LÄS MER

  3. 22. Extreme points of the Vandermonde determinant and phenomenological modelling with power exponential functions

    Författare :Karl Lundengård; Sergei Silvestrov; Milica Rancic; Anatoliy Malyarenko; Palle Jorgensen; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics Applied Mathematics; matematik tillämpad matematik;

    Sammanfattning : This thesis discusses two topics, finding the extreme points of the Vandermonde determinant on various surfaces and phenomenological modelling using power-exponential functions. The relation between these two problems is that they are both related to methods for curve-fitting. LÄS MER

  4. 23. Dynamics of Fluid Particles in Turbulent Flows; CFD simulations, Model Development and Phenomenological Studies

    Författare :Ronnie Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Particle Image Velocimetry; Coalescence; Breakup; Multiphase Flow; Computational Fluid Dynamics; Planar laser induced fluorescence; Population Balance Modelling; Turbulence; High speed imaging technique; Mass Transfer; Refractive index matching;

    Sammanfattning : The thesis investigates the dynamics of fluid particles in turbulent flows, which plays an important role in the chemical, pharmaceutical, food and petroleum industries. Phenomenological studies, new mathematical models for the breakup phenomena, and development of a simulation method for chemical reactors constitute the main parts of this thesis. LÄS MER

  5. 24. Characteristic properties of two-dimensional superconductors close to the phase transition in zero magnetic field

    Författare :Kateryna Medvedyeva; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; superconductor; two dimensions; phase transition; vortex; currentvoltage characteristics; complex conductivity; scaling; critical exponents; XY-type models; dynamics; Physics; Fysik; fysik; Physics;

    Sammanfattning : The main focus of this thesis lies on the critical properties of twodimensional (2D) superconductors in zero magnetic field. Simulations based on variants of the 2D XY model are shown to give characteristic features close to the phase transition which agree qualitatively with experimental data. LÄS MER

  7. 25. Grus i maskineriet? : Några kommunala tjänstemäns, politikers, föräldrars och lärares syn på en skola för alla

    Författare :Inga-Lill Matson; Lise Roll Pettersson; Rolf Helldin; Inge Johansson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; a school for all; inclusion; inclusive education; parents´attitudes; teachers´ attitudes; special education; Interpretative Phenomenological Analysis; specialpedagogik; Special Education;

    Sammanfattning : The overall aim of this thesis is to investigate experiences, perceptions and experiences of "a school for all" in one municipality by means of a case study. The municipality is medium-sized and, for many years, has had a clearly expressed intention of providing "a school for all". LÄS MER