Search for dissertations about: "Basis set"

Showing result 1 - 5 of 497 swedish dissertations containing the words Basis set.

  2. 1. Descriptive Set Theory and Applications

    Author : Joao Pedro Paulos; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sets of Uniqueness; Operator U-sets; Thin Sets; Descriptive Set Theory; ; Operator U0-sets; Point Spectrum; Reflexivity; Fourier Algebra; Jamison sequences; Harmonic Analysis;

    Abstract : The systematic study of Polish spaces within the scope of Descriptive Set Theory furnishes the working mathematician with powerful techniques and illuminating insights. In this thesis, we start with a concise recapitulation of some classical aspects of Descriptive Set Theory which is followed by a succint review of topological groups, measures and some of their associated algebras. READ MORE

  4. 2. Oversampled radial basis function methods for solving partial differential equations

    Author : Igor Tominec; Elisabeth Larsson; Bengt Fornberg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; radial basis function; PDE; oversampling; stability; RBF-FD; RBF-PUM; unfitted;

    Abstract : Partial differential equations (PDEs) describe complex real-world phenomena such as weather dynamics,  object deformations, financial trading prices, and fluid-structure interaction.  The solutions of PDEs are commonly used to enhance the understanding of these phenomena and also as leverage to make technological improvements to consumer products. READ MORE

  5. 3. Neuromechanical basis of airflow-dependent antennal positioning in hawkmoths

    Author : Dinesh Natesan; Örjan Ekeberg; Sanjay P. Sane; Volker Dürr; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; insect antennae; antennal positioning; antennal hair plates; Böhm’s bristles; Johnston’s organs; control theory; hierarchical neural circuits; tuneable feedback loop; flexible reflexes; Computer Science; Datalogi;

    Abstract : Fast behaviors, seen in varied life forms, are often considered to be stereotypic and reflexive and the control neural circuits to be hard-wired. However, many such reflexes have been shown to respond in a context-dependent manner. READ MORE

  6. 4. Cylindrical Waveguide Slot Antenna Analysis

    Author : Johan Wettergren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; basis function; mutual admittance; cylinder; MPIE; slot; integral equation; waveguide; antenna; mutual coupling; moment method; EFIE;

    Abstract : Waveguide slot antennas with longitudinal and transverse slots are analyzed using a rigorous method. The antennas are divided into regions, which are analyzed separately and matched by a moment method procedure. At the apertures between the regions, the electric fields are expanded in trigonometric basis functions. READ MORE

  7. 5. Genetic Control of Annual Growth Rhythm in the Conifer Norway Spruce (Picea Abies L. Karst)

    Author : Anna Karlgren; Ulf Lagercrantz; Niclas Gyllenstrand; Janice Cooke; Uppsala universitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bud set; circadian clock; Picea abies; growth cessation; phosphatidyl ethanolamine-binding protein PEBP genes; Biologi med inriktning mot evolutionär funktionsgenomik; Biology with specialization in Evolutionary Functional Genomics;

    Abstract : Norway spruce (Picea abies L. Karst) is a conifer belonging to the group gymnosperms and is an ecologically and economically important species in several parts of Europe. READ MORE