Search for dissertations about: "effective collecting area"

Showing result 1 - 5 of 12 swedish dissertations containing the words effective collecting area.

2. 1. A Stacked Prism Lens Concept for Next-Generation Hard X-Ray Telescopes

   Author : Wujun Mi; Mats Danielsson; Peter Nillius; Ralf K. Heilmann; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; focusing X-ray telescopes; Wolter-I optics; stacked prism lens; focused UV lithography; grayscale e-beam lithography; proximity effect correction; angular resolution; effective collecting area; röntgenteleskop; Wolter-I-optik; staplade prismalinser; fokuserad UV-litografi; elektronstråle-litografi; Fysik; Physics;

   Abstract : Over the past half century, the focusing X-ray telescope has played a very prominent role in X-ray astronomy at the frontier of fundamental physics. The finer angular resolution and increased effective area have enabled more and more exciting discoveries and detailed studies of the high-energy universe, including the cosmic X-ray background (CXB) radiation, black holes in active galactic nuclei (AGN), galaxy clusters, supernova remnants, and so on. READ MORE

4. 2. Work-related stress among municipal employees in rural northern Sweden

   Author : Sofia Asplund; Britt-Marie Lindgren; Johan Åhlin; Mattias Hedlund; Magnus Åkerström; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; experiences; managers; municipal employees; occupational health; organisational and psychosocial work environment; rural area self-rated exhaustion disorder; work-related stress; omvårdnadsforskning med medicinsk inriktning; Caring Sciences; Occupational and Environmental Medicine; arbets- och miljömedicin;

   Abstract : Background: Many rural municipalities in Sweden are facing challenges like depopulation, decreased economy, and difficulties in recruiting staff. Living and working in rural areas may involve adverse working conditions and higher risks of ill-health. READ MORE

5. 3. Optimized processes in sawmills

   Author : Carl Gustav Lundahl; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Technology; Träteknik;

   Abstract : This work was initiated in order to show the potential for Swedish sawmills to achieve higher productivity by implementation of improved process control tools in breakdown and production flows. Accessible and reliable production data are crucial information concerning the area of process control; hence the objective in this study was to create a "toolbox" of suitable tools for decision support, surveys and analyses. READ MORE

6. 4. Organizational and economic aspects of housing management in deprived areas

   Author : Gunnar Blomé; Hans Lind; Christine Whitehead; KTH; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; large housing estates; deprived areas; housing policies; economic valuation and local management organisation models;

   Abstract : This dissertation consists of five papers with different objectives. The overall objective is to improve knowledge of effective policies regarding socially deprived large housing estates. All studies deal with the real estate context from a housing company decision-making perspective. READ MORE

7. 5. Impacts of Traffic Signal Control Strategies

   Author : Azhar Al-Mudhaffar; Karl-Lennart Bång; Nagui M. Rouphail; KTH; []
   Keywords : Driver behavior; Dilemma zone; Incident reduction; Signal control; Lhovra; Spot; Pribuss; Bus priority; Field measurement; Simulation; Calibration; Traffic performance; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : Traffic signals are very cost effective tools for urban traffic management in urban areas. The number of intersections in Sweden controlled by traffic signals has increased since the seventies, but efforts to study the traffic performance of the employed strategies are still lacking. READ MORE