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Visar resultat 1 - 5 av 6 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Quest for quantum signatures in Axion Dark Matter and Gravity

    Författare :Vasileios Fragkos; Igor Pikovski; Ingemar Bengtsson; Stockholms universitet; []
    Nyckelord :Axion Dark Matter; Gravity; Quantum mechanics; Theoretical Physics; teoretisk fysik;

    Sammanfattning : This licentiate thesis in theoretical physics focuses on the existence of quantum features in physical systems such as axion dark matter and gravity. Our focus is mostly on effects which appear at low energies, a regime in which our models can be confronted with current experiments or within the foreseeable future. LÄS MER

  3. 2. Spatial analysis and modeling of urban transportation networks

    Författare :Jingyi Lin; Yifang Ban; Sten Henning Hansen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Complex networks; transportation systems; network growth; Evolving networks; centrality; urban systems; topology; space syntax; spatial networks; distance effects; gravity laws; planarity; street network patterns; US airline system; China’s aviation system; network efficiency; cellular structure; hierarchy; network representations; Geodesy and Geoinformatics; Geodesi och geoinformatik;

    Sammanfattning : Transport systems in general, and urban transportation systems in particular, are the backbone of a country or a city, therefore play an intrinsic role in the socio-economic development. There have been numerous studies on real transportation systems from multiple fileds, including geography, urban planning, and engineering. LÄS MER

  4. 3. Modelling and Simulation of Turbulent Gas-Solid Flows applied to Fluidization

    Författare :Eric Peirano; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eulerian models; fluidization; two-fluid model; two-phase flow; granular flow theory; turbulence; fluidized beds; gas-solid flows;

    Sammanfattning : Modelling of gas-solid suspensions has been studied with emphasis on suitable closure laws. A study of characteristic time scales and energy dissipation mechanisms is made for the case of a simple shear flow. Applications of the modelling are presented in the form of simulation and validation of experiments in fluidized beds. LÄS MER

  5. 4. Analysis of Dynamic Flight Loads

    Författare :Natascha Jansson; Ulf Ringertz; David Eller; Peter Linde; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the determination of loads on an aircraft struc- ture during flight. The focus is on flight conditions where the loads are significantly time-dependent. Analysis of flight loads is primarily motivated to ensure that structural failure is avoided. LÄS MER

  7. 5. Defining rape : emerging obligations for states under international law?

    Författare :Maria Eriksson; Joakim Nergelius; Ola Engdahl; Helen Durham; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Prohibition of rape; definition of rape; women s rights; armed conflict; state obligations; fragmentation; humanisation; LAW JURISPRUDENCE; RÄTTSVETENSKAP JURIDIK; Juridik; Law;

    Sammanfattning : The prevalence of rape and its widespread impunity, whether committed during armed conflict or peacetime, has been firmly condemned by the UN and its prohibition has been consistently recognised in international law. This development, however, is a rather novel endeavour. LÄS MER