Search for dissertations about: "fractal dimension"

Showing result 1 - 5 of 27 swedish dissertations containing the words fractal dimension.

  2. 1. Topics in multifractal measures, nonparametrics and biostatistics

    Author : Attila Frigyesi; Anestesiologi och intensivvård; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; confidence interval; mixed effects; Statistics; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik; operational model of pharmacological agonism; concentration-response curves; dose-response curves; ventilation perfusion scintigraphy; V Q-scan; pulmonary embolism; automated method; box counting; correlation dimension; Hentschel-Procaccia dimension; Rényi dimension; generalized dimensions; fractal dimension estimation; dimension spectrum; multifractal measures; kernel density estimates; absolute continuity; singular distribution functions;

    Abstract : This thesis consists of four papers. The first two papers, which comprise the main part of the thesis, deal with an unexpected connection between kernel density estimators and dimension spectra for multifractal measures. READ MORE

  4. 2. Dimensions and projections

    Author : Anders Nilsson; Peter Wingren; Fredrik Georgsson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fractals; Hausdorff dimension; box dimension; packing dimension; projections; MATHEMATICS; MATEMATIK;

    Abstract : This thesis concerns dimensions and projections of sets that could be described as fractals. The background is applied problems regarding analysis of human tissue. One way to characterize such complicated structures is to estimate the dimension. READ MORE

  5. 3. 3-D Characterization and Degradation Analysis of Rock aggregates

    Author : Pasi Tolppanen; KTH; []
    Keywords : 3-dimension; 3-D; laser scanning; aggregate; ballast; characterization; size; shape; volume; roughness; Fast Fourier analysis; fractal; degradation;

    Abstract : .... READ MORE

  6. 4. The role of Landau-Darrieus instability in flame dynamics and deflagration-to-detonation transition

    Author : Damir Valiev; Börje Johansson; Vladimir Karlin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flame; premixed; instability; front; Landau; Darrieus; fractal; freely; deflagration; detonation; transition; DDT; modeling; simulation; Other materials science; Övrig teknisk materialvetenskap;

    Abstract : The role of intrinsic hydrodynamic instability of the premixed flame (known as Landau-Darrieus instability) in various flame phenomena is studied by means of direct numerical simulations of the complete system of hydrodynamic equations. Rigorous study of flame dynamics and effect of Landau-Darrieus instability is essential for all premixed combustion problems where multidimensional effects cannot be disregarded. READ MORE

  7. 5. Electrical Properties of Carbon Black Polymer Composites: Filler Particle Rearrangement

    Author : Karl Michael Jäger; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conductivity; fractal; permittivity; carbon black; dielectric; electron tunnelling; polymer; image analysis; cluster; percolation;

    Abstract : The practical application of semi-conducting carbon black polymer composites often involves temperature variations resulting in changes in their electrical properties. Study of cross-linked ethylene butylacrylate copolymer (EBA) filled with acetylene black has shown that these changes are due to carbon black network re-arrangement. READ MORE