Sökning: "Stefan Larsson"

Visar resultat 16 - 20 av 66 avhandlingar innehållade orden Stefan Larsson.

  1. 16. Doing Things in Relation to Machines : Studies on Online Interactivity

    Författare :Anders Olof Larsson; Pär Ågerfalk; Stefan Hrastinski; Else Nygren; Mark Aakhus; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : The Internet is often discussed in conjunction with various notions of interactivity. Recently, conceptualizations of a “Web 2.0″, mainly focusing on harnessing user-generated content, have grown increasingly common in both public discourse and among researchers interested in the continued growth and transformation of the Internet. LÄS MER

  3. 17. Ashes to ashes : Applications of tephrochronology in Scandinavia

    Författare :Simon A. Larsson; Stefan Wastegård; Britta Sannel; Christine Lane; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tephrochronology; tephrostratigraphy; tephra; palaeoclimate; Last Glacial–Interglacial Transition; Scandinavia; naturgeografi; Physical Geography;

    Sammanfattning : The project presented in this thesis provides two examples of applications of tephrochronology in Scandinavia. The usage of tephra deposits preserved in sediments—i.e. LÄS MER

  4. 18. Discrete element technique for modeling high-speed railway tracks

    Författare :Alireza Ahmadi; Stefan Larsson; Carl Wersäll; Liang Cui; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polygonal particles; Direct shear test; Particle scaling; Bal- lasted track; DEM; Polygonala partiklar; direkt skjuvförsök; partikelskalning; ballastspår; DEM; Soil and Rock Mechanics; Jord- och bergmekanik;

    Sammanfattning : The Discrete element method (DEM) is a methodology to investigatethe interactions among granular materials. It analyzes the behavior of par-ticulate environments by solving force-displacement equations that adhereto Newton’s second law of motion. LÄS MER

  5. 19. Strength variability in lime-cement columns and its effect on the reliability of embankments

    Författare :Mohammed Salim Al-Naqshabandy; Stefan Larsson; Lars Olsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lime-cement; embankments;

    Sammanfattning : Ground improvement by deep mixing (DM) is a generic term used for a number of methods in which a binding agent, often lime and/or cement, is mechanically mixed with the soil to increase its engineering properties. The inherent variability with respect to the engineering properties of the improved soil is high due to the variations in geology and the complex mixing process. LÄS MER

  7. 20. X-ray variability in Galactic high-mass black hole binaries

    Författare :Magnus Axelsson; Stefan Larsson; Chris Done; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Accretion; high-energy astrophysics; temporal variability; X-ray binaries; Astronomy and astrophysics; Astronomi och astrofysik; Astronomy; astronomi;

    Sammanfattning : The stars of the night sky can to the naked eye appear to be steady and unchanging, apart from the twinkling created by air moving in the atmosphere. However, when viewed in X-rays, the sky is far from constant, with detectable changes occurring on very short timescales.Black hole X-ray binaries are strong sources of X-rays. LÄS MER