Search for dissertations about: "Harmonic analysis"

Showing result 1 - 5 of 119 swedish dissertations containing the words Harmonic analysis.

  1. 1. On some topics in operator theory : An unfinished story about mathematical control

    University dissertation from Lund University, Faculty of Science, Centre for Mathematical Sciences

    Author : Eskil Rydhe; Lunds universitet.; Lund University.; Lund University.; [2017-05]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carleson embeddings; complex analysis; control theory; functional models; Hankel operators; harmonic analysis; operator theory; Triebel–Lizorkin spaces; vector-valued analytic functions;

    Abstract : Vi föreställer oss en metallstav som hettats upp till en, låt oss säga inhomogen,temperatur. Vi föreställer oss också att staven är isolerad runtom, men inte iändpunkterna. Om vi sänker ned staven i en stor bassäng med nollgradigt vattenså kommer termisk energi att lämna staven genom dess ändar. READ MORE

  2. 2. Harmonic measures

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Jonatan Vasilis; Göteborgs universitet.; Gothenburg University.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; harmonic measure; square root of the Poisson kernel; Hardy space; p-Laplace operator; random walk; regular tree; discrete minimal thinness;

    Abstract : This thesis uses both analytic and probabilistic methods to study continuous and discrete problems. The main areas of study are the asymptotic properties of p-harmonic measure, and various aspects of the square root of the Poisson kernel.Fix a domain and a boundary point, subject to certain regularity conditions. READ MORE

  3. 3. Topics in Potential Theory: Quadrature Domains, Balayage and Harmonic Measure

    University dissertation from Stockholm : KTH

    Author : Tomas Sjödin; KTH.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematical analysis; Quadrature Domain; Balayage; Harmonic measure; Martin boundary; Matematisk analys; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical analysis; MATEMATIK Algebra; geometri och analys Analys;

    Abstract : In this thesis, which consists of five papers (A,B,C,D,E), we are interested in questions related to quadrature domains. Among the problems studied are the possibility of changing the type of measure in a quadrature identity (from complex to real and from real signed to positive), properties of partial balayage, which in a sense can be used to generate quadrature domains, and mother bodies which are closely related to inversion of partial balayage. READ MORE

  4. 4. Control and Analysis of Pulse-Modulated Systems

    University dissertation from Stockholm : KTH

    Author : Stefan Almér; KTH.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pulse-width modulation; Periodic systems; Stability analysis; Harmonic analysis; Lyapunov methods; Dynamic phasors; Harmonic transfer function; Switched mode power converters; Sampled data modeling; H-infinity synthesis; MATHEMATICS Applied mathematics Optimization; systems theory; MATEMATIK Tillämpad matematik Optimeringslära; systemteori;

    Abstract : The thesis consists of an introduction and four appended papers. In the introduction we give an overview of pulse-modulated systems and provide a few examples of such systems. Furthermore, we introduce the so-called dynamic phasor model which is used as a basis for analysis in two of the appended papers. READ MORE

  5. 5. On the Benefit of Harmonic Measurements in Power Systems

    University dissertation from Stockholm : Elektrotekniska system

    Author : Erik Thunberg; KTH.; [2001]
    Keywords : Power Quality; Power System Harmonics; Harmonic Distortion; Harmonic Measurement; Harmonic Analysis; Power Distribution;

    Abstract : .... READ MORE