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Visar resultat 6 - 10 av 74 avhandlingar som matchar ovanstående sökkriterier.

  1. 6. High order difference approximations for the linearized Euler equations

    Författare :Stefan Johansson; Bernhard Müller; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : The computers of today make it possible to do direct simulation of aeroacoustics, which is very computational demanding since a very high resolution is needed.In the present thesis we study issues of relevance for aeroacoustic simulations. Paper A considers standard high order difference methods. LÄS MER

  3. 7. Micromechanical properties of silicon

    Författare :Stefan Johansson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  4. 8. Very preterm birth : etiological aspects and short and long term outcomes

    Författare :Stefan Johansson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Very preterm birth, occurring before 32 completed weeks of gestation, is an often unexplained pregnancy complication affecting approximately 1 to 2 percent of all births. This thesis includes four studies regarding the etiology, and short and long term outcomes of very preterm birth, using Swedish population-based data. LÄS MER

  5. 9. Voltage collapse in power systems : the influence of generator current limiters, on-load tap changers and load dynamics

    Författare :Stefan Johansson; Fredrik Sjögren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; voltage collapse; field current limiter; current-voltage trajectory; armature current limiter; load dunamics; voltage instability;

    Sammanfattning : .... LÄS MER

  7. 10. Design for Participation and Inclusion will Follow : Disabled People and the Digital Society

    Författare :Stefan Johansson; Jan Gulliksen; Per-Olof Hedvall; Bodil Jönsson; Katarina Lindblad-Gidlund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Design; Accessibility; Universal Design; Participation; Disability Digital Divide; Inclusion; Människa-datorinteraktion; Human-computer Interaction;

    Sammanfattning : Digitalization is rapidly taking over all aspects of society, but still there are parts of the population who have to struggle for access to, and to be able to use, the digital resources. Design processes and outcomes in the form of artefacts, that takes accessibility into account, is key to participation. LÄS MER