Sökning: "wake survey"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden wake survey.

  1. 1. Computational hydrodynamics applied to an America's Cup class keel - best practice and validation of methods

    Författare :Sofia Werner; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; America s Cup; induced drag; wind tunnel; winglet; validation; keel; vortex drag; wake survey;

    Sammanfattning : Numerical predictions of the flow around yacht keels can be performed with various types of methods. In this work computational fluid dynamic (CFD) computations are validated against wind tunnel studies of an America's Cup Class keel with the purpose of investigating the accuracy that can be achieved with CFD, which methods that are suitable and how they should be used in the best way. LÄS MER

  3. 2. Nighttime sleep and daytime behavior in children : Studies based on parents' perseptions of five to eight year old children

    Författare :Hans Smedje; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Behaviour; Children; Course; Parents; Persistence; Prevalence; Sleep; Strengths and Difficulties; Survey; Neurovetenskap; Neurology; Neurologi; barn- och ungdomspsykiatri; Child and Youth Psychiatry;

    Sammanfattning : The aim of this thesis is to survey sleep-wake characteristics and their associations with other factors, especially behavioural and emotional difficulties, in children. Parents' reports showed that various sleep disturbances were fairly common phenomena among 5-6-year-olds. LÄS MER

  4. 3. De små båtarna och den stora flykten : Arkeologi i spåren av andra världskrigets baltiska flyktbåtar

    Författare :Mirja Arnshav; Mats Burström; Simon Ekström; Björn Magnusson Staaf; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Archaeology of the contemporary past; materiality; Second World War; object biography; material culture; memory; cultural heritage; boats; escape; boat refugees; Estonian Swedes; Coastal Swedes; Estonia; the Baltic states; Samtidsarkeologi; arkeologi; andra världskriget; objektbiografi; Materiell kultur; minne; kulturarv; materialitet; båtar; flykt; båtflyktingar; estlandssvenskar; Estland; Baltikum; Archaeology with General Specialisation; arkeologi med inriktning mot allmän arkeologi;

    Sammanfattning : The Baltic states, Estonia, Latvia and Lithuania, were occupied no less than three times during the Second World War. Faced with a reign of terror, the threat of deportation, and compulsory conscription, over 30,000 people fled over the Baltic Sea to Sweden. LÄS MER

  5. 4. The Lattice Boltzmann Method for Wind Farm Simulations: Validation and Application

    Författare :Henry Korb; Stefan Ivanell; Joakim Widén; Hugo Olivares-Espinosa; Martin Hansen; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Many new challenges in wind energy require the use of large eddy simulation for accurate modeling of wind farm flows. However, the immense computational cost hinders its use in research and industry. LÄS MER

  7. 5. Europafacklig samverkan. Problem och möjligheter

    Författare :Kristina Lovén Seldén; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; EU; industrial relations; meta-organizations; minimum wages; regime comparision; trade unions; transnational union cooperation; working time;

    Sammanfattning : The overarching aim of this thesis is to examine the conditions for cooperation among trade unions in Europe, and to identify factors making it easier or more difficult. The dissertation centers on two crucial areas: wage determination and working-time regulation. LÄS MER