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Visar resultat 1 - 5 av 7 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Newton systems of cofactor type in Euclidean and Riemannian spaces

    Författare :Hans Lundmark; Franco Magri; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : We study second order ordinary differential equations of Newton type with integrals of motion that depend quadratically on the velocity. In particular, we introduce the class of cofactor pair systems, which admit two quadratic integrals of motion of a special form. LÄS MER

  3. 2. Religiositet och coping : religionspsykologiska studier av kristna med cancer

    Författare :Mikael Lundmark; Tomas Lindgren; Ruard Ganzevoort; Hans Stifoss-Hanssen; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; psychology of religion; religious studies; coping; coping process; coping theosy; Christians; religiosity; cancer; religionspsykologi; religionsvetenskap; coping; copingprocess; copingteori; kristna; religiositet; cancer; religionspsykologi; psychology of religion;

    Sammanfattning : This thesis investigates the interdependence of religiosity and a life situation changed by cancer, focusing especially on the coping process. This implies analyses of a number of identified expressions of religiosity regarding prerequisites and functions in the coping process. LÄS MER

  4. 3. Contributions to the theory of peaked solitons

    Författare :Marcus Kardell; Hans Lundmark; Helge Holden; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The aim of this work is to present some new contributions to the theory of peaked solitons. The thesis contains two papers, named "Lie symmetry analysis of the Novikov and Geng-Xue equations, and new peakon-like unbounded solutions to the Camassa-Holm, Degasperis-Procesi and Novikov equations'' and "Peakon-antipeakon solutions of the Novikov equation'' respectively. LÄS MER

  5. 4. New Phenomena in the World of Peaked Solitons

    Författare :Marcus Kardell; Hans Lundmark; Stefan Rauch; Joakim Arnlind; Jonatan Lenells; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The aim of this work is to present new contributions to the theory of peaked solitons. The thesis consists of two papers,which are named “Newsolutionswith peakon creation in the Camassa–HolmandNovikov equations” and “Peakon-antipeakon solutions of the Novikov equation” respectively. LÄS MER

  7. 5. Analysis of Dynamics of the Tippe Top

    Författare :Nils Rutstam; Stefan Rauch; Hans Lundmark; Tudor Ratiu; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The Tippe Top is a toy that has the form of a truncated sphere with a small peg. When spun on its spherical part on a flat supporting surface it will start to turn upside down to spin on its peg. LÄS MER