Sökning: "Transport mode"

Visar resultat 1 - 5 av 246 avhandlingar innehållade orden Transport mode.

  1. 1. Collisional transport in edge transport barriers and stellarators

    Författare :Stefan Buller; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; plasma physics; stellarator; impurity transport; collisional transport; transport; pedestal;

    Sammanfattning : Nuclear fusion has the potential to generate abundant and clean energy. In magnetic confinement fusion, the temperatures needed to achieve fusion are obtained by confining a hot plasma with magnetic fields. LÄS MER

  3. 2. Welfare Effects of Transport Policies : an analysis of congestion pricing and infrastructure investments

    Författare :Jonas Westin; Lars-Göran Mattsson; Lars Hultkrantz; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; congestion charge; cost-benefit analysis; tax distortions; transport investment; transport policies; welfare effects; Economics; Nationalekonomi; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur; SRA - Transport; SRA - Transport;

    Sammanfattning : Interactions between the transport market and other distorted markets, such as the labor market, can have a large impact on the overall welfare effect of a road pricing policy or a congestion charge. Many road pricing studies therefore try to incorporate effects from other distorted markets in the analysis. LÄS MER

  4. 3. Human mobility behavior : Transport mode detection by GPS data

    Författare :Paria Sadeghian; Johan Håkansson; Xiaoyun Zhao; Kenneth Carling; Gyözö Gidofalvi; Högskolan Dalarna; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Transport mode detection; Machine learning; Statistical learning; Rule-based method; Data labeling;

    Sammanfattning : GPS tracking data are widely used to understand human travel behavior and to evaluate the impact of travel. A major advantage with the usage of GPS tracking devices for collecting data is that it enables the researcher to collect large amounts of highly accurate and detailed human mobility data. LÄS MER

  5. 4. The Tragedy of Ordinarity : Culture Constraints on Sustainable Development Based on Public Transport

    Författare :Stephan Bösch; Gerhard Gustafsson; Reinhold Castensson; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; culture; transport culture; public transport; geography; transport geography; sustainable development; sustainable transport; kultur; transportkultur; kollektivtrafik; geografi; transportgeografi; hållbar utveckling; hållbara transporter; Human geography; Kulturgeografi; Kulturgeografi; Human Geography;

    Sammanfattning : This licentiate thesis consists of two free-standing papers and a linking essay that links the papers by articulating an overall research aim and common theoretical background. The research aim is kept general and focuses on the role public transport can play in sustainable development. LÄS MER

  7. 5. Resonant magnetic perturbation effect on the tearing mode dynamics : Novel measurements and modeling of magnetic fluctuation induced momentum transport in the reversed-field pinch

    Författare :Richard Fridström; Per Brunsell; Lorenzo Frassinetti; Tommaso Bolzonella; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RFP; reversed-field pinch; tokamak; tearing mode; RMP; fusion; plasma; resonant magnetic perturbation; stochastic; magnetic; field; viscosity; mode; locking; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The tearing mode (TM) is a resistive instability that can arise in magnetically confined plasmas. The TM can be driven unstable by the gradient of the plasma current. When the mode grows it destroys the magnetic field symmetry and reconnects the magnetic field in the form of a so-called magnetic island. LÄS MER