Sökning: "Stig Larsson"

Visar resultat 6 - 10 av 19 avhandlingar innehållade orden Stig Larsson.

  1. 6. Exponential integrators for stochastic partial differential equations

    Författare :Rikard Anton; David Cohen; Christian Engström; Stig Larsson; Annika Lang; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Stochastic partial differential equations; numerical methods; stochastic exponential integrator; strong convergence; trace formulas;

    Sammanfattning : Stochastic partial differential equations (SPDEs) have during the past decades become an important tool for modeling systems which are influenced by randomness. Because of the complex nature of SPDEs, knowledge of efficient numerical methods with good convergence and geometric properties is of considerable importance. LÄS MER

  3. 7. Från ingenjörskonst till informatörskonst : studier av PR och riskkommunikation

    Författare :Mats Eriksson; Stig Arne Nohrstedt; Larsåke Larsson; Rolf Lidskog; Ragnar Löfstedt; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Public relations; Risk communication; Organisational learning; Nuclear waste; Case studies; SKB; Rohm and Haas; Preem raffinaderi; Scanraff; medie- och kommunikationsvetenskap; Media and communication studies; Medie- och kommunikationsvetenskap; Media and Communication Studies; Medie- och kommunikationsvetenskap;

    Sammanfattning : This thesis discusses the external risk communication of industrial companies. Such risk communication is here viewed as a division of the companies’ PR operations. There are some central weak points in current risk communication research. LÄS MER

  4. 8. Supported employment i en svensk kontext : förutsättningarnär personer med funktionsnedsättning når,får och behåller ett arbete

    Författare :Johanna Gustafsson; Berth Danermark; Julia Peralta; Stig Larsson; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; supported employment; people with disabilities; vocational rehabilitation; employment; social inclusion; trust; Handikappvetenskap; Disability Research;

    Sammanfattning : The overall aim of this thesis is to discover, to value and to explain, if and why Supported Employment functions in a Swedish context and to also highlight those mechanisms which provide meaningful conditions within that context, when a person with a disability reaches, procures and retains employment. The empirical part consists of four studies that examine (1) whether SE has an effect on the employment rate, disposable income and sum of allowances, (2) the employer´s perspective of employing people with disabilities, (3) how employers perceive support from SE in the employment process and (4) how employees with disabilities perceive their work situation and social inclusion in the workplace. LÄS MER

  5. 9. Solution to boundary-contact problems of elasticity in mathematical models of the printing-plate contact system for flexographic printing

    Författare :Nikolai Kotik; Yury Shestopalov; Stig Larsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; boundary-contact problem; elasticity; integral equation; approximate decomposition; Applied mathematics; Tillämpad matematik; Matematik; Mathematics;

    Sammanfattning : Boundary-contact problems (BCPs) are studied within the frames ofclassical mathematical theory of elasticity and plasticityelaborated by Landau, Kupradze, Timoshenko, Goodier, Fichera andmany others on the basis of analysis of two- and three-dimensionalboundary value problems for linear partial differential equations.A great attention is traditionally paid both to theoreticalinvestigations using variational methods and boundary singularintegral equations (Muskhelishvili) and construction of solutionsin the form that admit efficient numerical evaluation (Kupradze). LÄS MER

  7. 10. Lp-contractivity of Semigroups Generated by Linear Partial Differential Operators

    Författare :Mikael Langer; Stig Larsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is devoted to the study of contraction semigroups generated by linear partial differential operators. It is shown that linear partial differential operators of order higher than two cannot generate contraction semigroups on (LP)N for p ∈ [1, oo) unless p = 2. LÄS MER