Sökning: "Anders Bergman"

Visar resultat 21 - 25 av 32 avhandlingar innehållade orden Anders Bergman.

  1. 21. First-principles Studies of Local Structure Effects in Magnetic Materials

    Författare :Marcio Costa; Anders Bergman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnetic anisotropy; DMFT; magnetism; DFT; Materialvetenskap; Materials Science;

    Sammanfattning : This thesis focus on the magnetic behavior, from single atoms to bulk materials. The materials considered in this thesis have been studied by computational methods based on ab initio theory, density functional theory (DFT), including treatment of the spin-orbit coupling, non-collinear magnetism, and methods capable of treating discorded systems. LÄS MER

  3. 22. Fine stream wood : effects on drift and brown trout (Salmo trutta) growth and behaviour

    Författare :Åsa Enefalk; Eva Bergman; Anders Nilsson; Stanley Gregory; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stream fish; wood; salmonid; trout; aquatic invertebrates; behaviour; sheltering; Biology; Biologi;

    Sammanfattning : Stream ecosystems and their riparian zones have previously been regarded as two different ecosystems, linked through numerous reciprocal subsidies. Today, ecologists agree that the stream and the riparian zone should be regarded as one system, the stream-riparian ecosystem, which is characterised largely by the subsidies between land and water. LÄS MER

  4. 23. Atomistic spin dynamics and relativistic effects in chiral nanomagnets

    Författare :Konstantinos Koumpouras; Anders Bergman; Olle Eriksson; Manuel Pereiro; Elena Vedmenenko; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis, studies based on magnetization dynamics on atomic length scales are presented for a number of magnetic systems, where Dzyaloshinskii-Moriya (DM) interaction is present. First-principle methods, based on density functional theory (DFT), have been used to study the pairwise magnetic interactions, such as Heisenberg exchange and DM interaction, which are the crucial parameters for the helimagnetic systems. LÄS MER

  5. 24. Population ecology of perch (Perca fluviatilis) in boreal lakes

    Författare :Arne Linløkken; Eva Bergman; Larry Greenberg; Anders Hargeby; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; perch; growth; size; mortality; temperature; acidification; density; roach; competition; Biology; Biologi; Biology; Biologi;

    Sammanfattning : I studied the effects of temperature, pH, competition and predation on Eurasian perch (Perca fluviatilis) in 30 lakes in Norway during 1981-2001. The study lakes were situated in two different areas in southern Norway; four lakes in Aust-Agder county in southernmost Norway were explored during 1981-1984 and 26 lakes in Hedmark county in south-eastern Norway were investigated during 1992-2001. LÄS MER

  7. 25. The Leader of the Pack : A Service Perspective on Packaging and Customer Satisfaction

    Författare :Martin Löfgren; Anders Gustafsson; Lars Witell; Bo Edvardsson; Bo Bergman; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Customer satisfaction; Kano; Packaging; Business studies; Företagsekonomi; Business Administration; Företagsekonomi;

    Sammanfattning : Almost everything we as consumers buy in a store has a package. Packages have many functions – some, if not all, present marketers with the opportunity to gain competitive advantages. LÄS MER