Sökning: "E Wikström"

Visar resultat 6 - 10 av 37 avhandlingar innehållade orden E Wikström.

  1. 6. Electric vehicles in action

    Författare :Martina Wikström; Per Alvfors; Lisa Hansson; Gil Tal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electric vehicles; interdisciplinary approach; public fleets; public transport;

    Sammanfattning : This thesis analyses the political and practical conditions for introducing electric vehicles in Swedish public authorites and discusses the potential for using electric vehicles in public transport and public fleets. The work has been carried out using an interdisciplinary research approach. LÄS MER

  3. 7. The dynamics in harvested populations

    Författare :Anders Wikström; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluctuations; temporal; state-space; Harvest; cod; vendace; elasticity; stage-structured; stochastic; growth-rate; Baltic Sea; Bothnian Bay;

    Sammanfattning : We are interested in the effect of harvesting on population fluctuations and for that purpose we develop and analyze an age-structured model where recruitment is a stochastic process and the adult segment of the population is harvested. When a constant annual harvest is taken the coefficient of variation of the adult population increases for most parameter values due to the age truncation effect, i. LÄS MER

  4. 8. Reluctantly Virtual : Modelling Copyright Industry Dynamics

    Författare :Patrik Wikström; Robert Burnett; Will Straw; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Music industry dynamics; Internet; Media; Production of culture; Qualitative system dynamics modelling; Organisational adaptation; Copyright; Media and communication studies; Medie- och kommunikationsvetenskap; Media and Communication Studies; Medie- och kommunikationsvetenskap; Business studies;

    Sammanfattning : During the evolution of the music industry, developments in the media environment have required music firms to adapt in order to survive. Changes in broadcast radio programming during the 1950s; the Compact Cassette during the 1970s; and the deregulation of media ownership during the 1990s are all examples of changes which have heavily affected the music industry. LÄS MER

  5. 9. Ultrasound and molecular biomarkers for prediction of preterm delivery in different risk groups of singleton pregnancies

    Författare :Tove Wikström; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cervical length measurement; preterm birth; ; second trimester; screening; cost-effectiveness analyzes; progesterone; human microbiome; ; transcriptome; gene expression profiles; microRNA;

    Sammanfattning : Ultrasound and molecular biomarkers for prediction of preterm delivery in women with a singleton pregnancy Tove Wikström Department of Obstetrics and Gynecology, Institute of Clinical Sciences Sahlgrenska Academy, University of Gothenburg Gothenburg, Sweden Background: Preterm delivery (PTD) is the leading cause of death in children under five years of age. Spontaneous PTD (sPTD) might be partly preventable by treating asymptomatic women having a short cervical length (CL) with vaginal progesterone. LÄS MER

  7. 10. A search for solar dark matter with the IceCube neutrino telescope

    Författare :Gustav Wikström; Klas Hultqvist; John Carr; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dark matter; neutrinos; neutrino telescopes; IceCube; Astroparticle physics; Astropartikelfysik; fysik; Physics;

    Sammanfattning : Dark matter particles in the form of supersymmetric Weakly Interacting Massive Particles (WIMPs) could accumulate in the centre of the Sun because of gravitational trapping. Pair-wise annihilations of WIMPs could create standard model particles out of which neutrinos could reach the Earth. LÄS MER