Search for dissertations about: "Erik Lundgren"

Showing result 1 - 5 of 18 swedish dissertations containing the words Erik Lundgren.

  2. 1. Exploring and modeling response process data from PISA : inferences related to motivation and problem-solving

    Author : Erik Lundgren; Hanna Eklöf; Inga Laukaityte; Per-Erik Lyrén; Samuel Greiff; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; response processes; large-scale assessments; motivation; problem-solving; computational modeling; Bayesian modeling; didactics of educational measurement; beteendevetenskapliga mätningar;

    Abstract : This thesis explores and models response process data from large-scale assessments, focusing on test-taking motivation, problem-solving strategies, and questionnaire response validity. It consists of four studies, all using data from PISA (Programme for International Student Assessment) data. READ MORE

  4. 2. Internal Cooling Design Using Multiphysics Topology Optimization

    Author : Jonas Lundgren; Carl-Johan Thore; Anders Klarbring; Jan-Erik Lundgren; Joe Alexandersen; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis investigates topology optimization (TO) as a tool for designing optimal internal cooling configurations in components subjected to external hot gas streams. The work is motivated by the challenge of simultaneously considering objectives from multiple physics domains, and the rapid development of additive manufacturing (AM) in the industry, which makes it possible to realize highly complex TO designs. READ MORE

  5. 3. Interactions between Yersinia pseudotuberculosis and host cells - role of invasin and YopH

    Author : Nivia Hamid; Erik Lundgren; Erik Kihlström; Umeå universitet; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 4. Amino acid naphthylamidase isozymes in human cells grown in vitro : Hormonal regulation and isozyme differentiation in cancer cells and normal cells

    Author : Erik Lundgren; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The elucidation of regulatory mechanisms in higher organisms represents a front line problem in biochemical genetics. In Man the only material available for experimental studies of regulatory mechanisms is cells cultured in vitro. READ MORE

  7. 5. Damage dependent moisture absorption in composite laminates

    Author : Jan-Erik Lundgren; KTH; []
    Keywords : ;

    Abstract : .... READ MORE