Sökning: "hastighet"

Visar resultat 1 - 5 av 245 avhandlingar innehållade ordet hastighet.

  1. 1. Sociala normer och regelefterlevnad : Trafiksäkerhetsfrågor ur ett rättssociologiskt perspektiv

    Författare :Måns Svensson; Rättssociologiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; regelefterlevnad; efterlevnadskontroll; juridik; trafikbestämmelser; hastighet; bilbälte; rattfylleri; nykterhet; accidens; TPB; essens; social kontroll; prevention; normer; trafik; nollvision; Rättssociologi;

    Sammanfattning : The thesis aims to: (a) broaden the knowledge base that makes up the foundation for decisions with regard to how traffic law enforcement is best outlined, as well as increasing the understanding of how the shaping of different public instruments of control affects the chances of success; and (b) contribute to the development of theory and methodology within sociology of law. The relationship between legal rules and social norms play a crucial part in the analysis. LÄS MER

  3. 2. Bilars hastighet längs gator med gupp: metod för framställning av hastighetsprofiler och analys av hastighetsförlopp

    Författare :Joachim Karlgren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; road hump; speed reducing effect; traffic calming; speed measurement; speed profile;

    Sammanfattning : There is a well-documented relationship between motorists speed and the number, respectively severity, of accidents in urban streets. Also, studies have shown that vehicle emissions can increase on streets where speed reducing measures are installed, if the driving pattern of the motorists becomes more jerky. LÄS MER

  4. 3. The tempo and mode of evolution : a neontological reappraisal

    Författare :Melanie Monroe; Folmer Bokma; Pär Ingvarsson; Mikael Fortelius; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; birds; extinction; macroevolution; mammals; microevolution; punctuated equilibrium; speciation;

    Sammanfattning : The theory of “punctuated equilibrium” suggests that species evolve rapidly during or immediately upon speciation, “punctuating” long periods of little or no morphological evolution. Here I confirm that body size differences within clades of birds and mammals are best explained using a model of punctuated evolution. LÄS MER

  5. 4. Effective Charges Near 56Ni and Production of Anti-Nuclei Studied with Heavy-Ion Reactions

    Författare :Rickard du Rietz; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RDDS; Nuclear physics; Kärnfysik; PHENIX; RHIC; mirror nuclei; shell-model calculations; fusion-evaporation reactions; effective charges; anti-deuteron; Heavy-ion reactions; Fysicumarkivet A:000;

    Sammanfattning : This thesis presents the research performed within two different research groups using heavy-ion induced nuclear reactions. They offer the opportunity to investigate different properties of nuclear matter. The results are based on measurements using a variety of different experimental techniques. LÄS MER

  7. 5. Numerical Studies of Mixing in Pipes and Static Mixers

    Författare :Mårten Regner; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulent mixing; Secondary flow; Viscosity ratio; Computational fluid dynamics; Food and drink technology; Livsmedelsteknik; Rate of striation thinning; Static mixer; Laminar mixing;

    Sammanfattning : The objective of the present work was to investigate the mixing process in static mixers under laminar flow conditions, and in pipes during the displacement of dissimilar liquids. A numerical scheme and a method of characterizing static mixers were developed. LÄS MER