Sökning: "integral representations"

Visar resultat 6 - 10 av 40 avhandlingar innehållade orden integral representations.

  1. 6. On Herglotz-Nevanlinna functions in several variables

    Författare :Mitja Nedic; Annemarie Luger; B. L. G. Jonsson; Ragnar Sigurðsson; Pamela Gorkin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Herglotz-Nevanlinna functions; several complex variables; integral representations; Nevanlinna measures; Herglotz-Nevanlinnafunktioner; flera komplexa variabler; integralframställningar; Nevanlinnamått; Mathematics; matematik;

    Sammanfattning : In this thesis, we investigate different aspects of the class of Herglotz-Nevanlinna functions in several variables. These are holomorphic functions on the poly-upper half-plane having non-negative imaginary part. Our results are presented in the four research articles A1 - A4, which are included in this thesis. LÄS MER

  3. 7. Radome Diagnostics: utilizing Source Reconstruction based on Surface Integral Representations

    Författare :Kristin Persson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nondestructive testing; source reconstruction; diagnostics; radome; phase reconstruction; insertion phase delay IPD ; equivalent surface currents;

    Sammanfattning : In this thesis, an inverse source reconstruction method with great potential in radome diagnostics is presented. A radome is a cover that encloses an antenna in order to protect it from environmental influences. LÄS MER

  4. 8. Att tillaga en region : Den regionala maten i representationer och praktik - exemplet Skärgårdssmak

    Författare :Susanna Heldt Cassel; Göran Hoppe; Brita Hermelin; Per Olof Hallin; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social and economic geography; Kulturgeografi; Human geography; Kulturgeografi;

    Sammanfattning : The connection between specific foods and specific places has, over the course of the past decade or so, come to constitute an important instrument in regional development strategies. The objective of this thesis is to study how regions are created and communicated in discourses on regional food and to examine how representations of regions are interpreted, given meaning and materialised in social practice. LÄS MER

  5. 9. Counting solutions to Diophantine equations

    Författare :Oscar Marmon; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Integral points; rational points; counting function; exponential sums; Weyl differencing; van der Corput s method; determinant method; sum of k-th powers; counting function;

    Sammanfattning : This thesis presents various results concerning the density of rational and integral points on algebraic varieties. These results are proven with methods from analytic number theory as well as algebraic geometry. LÄS MER

  7. 10. Modeling of Scattering by Cracks in Anisotropic Solids - Application to Ultrasonic Detection

    Författare :Johan Mattsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; elastic wave; ultrasonics; crack; integral equations; transducer; anisotropy; scattering; nondestructive testing;

    Sammanfattning : Elastodynamic wave scattering in anisotropic solids with application to ultrasonic nondestructive testing (NDT) is treated and mathematically modeled in this thesis. The scatterers are infinite strip-like cracks and the solids are homogeneous and linearly elastic with negligible damping. LÄS MER