Search for dissertations about: "urban atmosphere"

Showing result 1 - 5 of 44 swedish dissertations containing the words urban atmosphere.

  2. 1. Tribology of Metal-Graphite Composites : A Study of Sliding Electrical Contact Surfaces

    Author : Martina Grandin; Wiklund Urban; Staffan Jacobson; Ulf Jansson; Christian Holzapfel; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribology; tribofilm; surface analysis; wear; friction; electrical contacts; metal-graphite; contact resistance; cross-section; nanocomposite coating; copper; silver; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Abstract : An environmentally sustainable production of electrical power is important for preserving the earth’s natural resources. In order to utilize this power as efficiently as possible, it is of great importance to minimize the losses, for example in sliding electrical contacts. READ MORE

  4. 2. Building the city from the inside : architecture and urban transformation in Los Angeles, Porto, and Las Vegas

    Author : Hannes Frykholm; Daniel Koch; Catharina Gabrielsson; Roemer van Toorn; Albena Yaneva; KTH; []
    Keywords : HUMANIORA; HUMANITIES; Interior urbanism; architecture; urban transformation; threshold; lobby; temporality; labor; atmosphere; aesthetics; estetik; design; design; Stadsbyggnad;

    Abstract : Positioned in the research field of “interior urbanism” (Rice, 2016), this thesis considers entrance situations that occur between buildings and cities in order to develop new ways of investigating the relationship between architecture and urban transformation. From the main research question—How does architecture mediate urban transformation?—the thesis focuses on experience-driven narratives about the city (Pine & Gilmore, 2011). READ MORE

  5. 3. Dispersion and Transformation of Traffic Exhaust Particles in the Urban Atmosphere

    Author : Matthias Ketzel; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; condensation; deposition; dilution; particle size distribution; plume model; street canyon; traffic pollution; urban environment; turbulence; aerosol dynamics modelling; coagulation; Physics; Fysik; Fysicumarkivet A:2004:Ketzel;

    Abstract : Ultrafine particles, their sources and fate in the atmosphere are currently key issues in atmospheric research owing to concern about their effects on human health and global climate. Traffic emissions are a dominating source of ultrafine particles, especially in urban areas. READ MORE

  6. 4. Numerical modelling of sound propagation to closed urban courtyards

    Author : Maarten Hornikx; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; courtyard; urban noise abatement schemes; pseudospectral; road traffic noise; equivalent sources method; scale model study; urban canyon;

    Abstract : Because modern urban environments suffer from excessive levels of road traffic noise, access to closed courtyards is essential in order to offer urban sound environments of high quality with regard to health and perceived sound. To reach this quality, which is described by the quiet side definition, the 24-hour equivalent noise level should be below 45 dB(A). READ MORE

  7. 5. Urban microclimate and surface hydrometeorological processes

    Author : Christer Jansson; Per-Erik Jansson; David Gustafsson; Chen Delian; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CoupModel; ENVI-met; roughness sub-layer; urban heat island; Physical geography; Naturgeografi;

    Abstract : The urban near surface atmosphere is of great concern since it affects the climate to which an increasing amount of people are immediately exposed. This study investigated the microclimate in central Stockholm in terms of the thermal conditions in the 0-2. READ MORE