Sökning: "Turbulent exchange"

Visar resultat 16 - 20 av 25 avhandlingar innehållade orden Turbulent exchange.

  1. 16. Essays in Empirical Finance: Volatility, Interdependencies, and Risk in Emerging Markets

    Författare :Anders C Johansson; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Emerging markets; Asia; China; Stock markets; Bond markets; Exchange rates; Causality; Cointegration; Multivariate GARCH; Dynamic correlation; Timescales; Wavelet analysis; Heterogeneous markets; Multivariate stochastic volatility; Markov chain Monte Carlo; Country risk; Conditional beta;

    Sammanfattning : The four essays in this thesis deal with emerging markets and their empirical characteristics. They mainly explore the relationship among different markets and the thesis cover several asset classes, including stocks, bonds, and exchange rates. LÄS MER

  3. 17. Fluxes and Mixing Processes in the Marine Atmospheric Boundary Layer

    Författare :Erik Olof Nilsson; Anna Rutgersson; Harm Jonker; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Waves; Growing sea; Swell; Marine boundary layer; Air-sea interaction; Mixing; Momentum flux; Wind stress; Flux attenuation; Sensor separation; Large eddy simulation; Multiresolution analysis; Coupling; Wave model; Climate model; Wave age; Meteorology; Meteorologi;

    Sammanfattning : Atmospheric models are strongly dependent on the turbulent exchange of momentum, sensible heat and moisture (latent heat) at the surface. Oceans cover about 70% of the Earth’s surface and understanding the processes that control air-sea exchange is of great importance in order to predict weather and climate. LÄS MER

  4. 18. On the Arctic Boundary Layer : From Turbulence to Climate

    Författare :Thorsten Mauritsen; Gunilla Svensson; Joao Teixeira; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atmospheric boundary layers; Turbulence; Stable stratification; Gravity waves; Mesoscale motion; Arctic climate; Meteorology; Meteorologi; atmosfärvetenskap; Atmospheric Sciences;

    Sammanfattning : The boundary layer is the part of the atmosphere that is in direct contact with the ground via turbulent motion. At mid-latitudes the boundary layer is usually one or a few kilometers deep, while in the Arctic it is much more shallow, typically a few hundred meters or less. LÄS MER

  5. 19. Modeling flow and sediment transport in water bodies and watersheds

    Författare :Muluneh Admass Mekonnen; Bijan Dargahi; Anders Wörman; Hans Bergh; Edward Buchak; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bed load transport model; ECOMSED; Hydrology; Hydrodynamics; Spectral Analysis; SWAT; Water engineering; Vattenteknik;

    Sammanfattning : The research focus is on the various modeling aspects of flow and sediment transport in water bodies and watersheds. The interaction of flow with a mobile bed involves a complex process in which various turbulent scales characterized by coherent structures cause a chaotic sediment motion. LÄS MER

  7. 20. Modeling of Flame Propagation in Spark Ignition Engines

    Författare :Johan Wallesten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Developers and manufacturers of gasoline engines are struggling to improve fuel economy and minimize negative environmental effects. Hence, lean burn and direct injection (DI), in particular stratified charge (SC), spark ignition (SI) engines are of special interest. LÄS MER