Sökning: "Spot"

Visar resultat 1 - 5 av 322 avhandlingar innehållade ordet Spot.

1. 1. Environing Technology : Swedish Satellite Remote Sensing in the Making of Environment 1969–2001

   Författare :Johan Gärdebo; Nina Wormbs; Sabine Höhler; Edward Jones-Imhotep; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; COPUOS; environing; environmental diplomacy; infrastructure; satellite remote sensing; SPOT; Spot Image; sustainable development; Sweden; Swedish Space Corporation; History of Science; Technology and Environment; Historiska studier av teknik; vetenskap och miljö;

   Sammanfattning : The state-owned Swedish Space Corporation established a satellite remote sensing infrastructure and defined uses for the technology both within and beyond Sweden during the latter part of the twentieth century. This thesis studies Swedish satellite remote sensing as an environing technology – a technology that environs, that produces environments and our perceptions of the environment. LÄS MER

3. 2. Fatigue of Spot Welded Joints: Experiments and Life Predictions

   Författare :Hans-Fredrik Henrysson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crack closure; crack propagation; crack initiation; finite element method; damage accumulation; variable amplitude; fracture mechanics; fatigue; spot welds;

   Sammanfattning : Methods to assess the fatigue strength of spot welds in built-up structures are used on a daily basis in the automotive industry. Efficient and reliable numerical methods make it possible to achieve designs with low weight, low manufacturing costs and good durability within short development cycles, since the number of prototypes built can be reduced. LÄS MER

4. 3. Mechanical Properties of Resistance Spot Welds in Lightweight Applications

   Författare :Davood Afshari; Zuheir Barsoum; Arne Melander; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spot Weld; Aluminum alloy; Mechanical Properties; Finite Element; SRA - Production; SRA - Produktion;

   Sammanfattning : This licentiate thesis is concerned with residual stresses in aluminum alloy 6061-T6 resistance spot welded joint. Several topics related to mechanical strength of welded structures are treated such as; nugget size and microhardness and microstructures of weld zone and their influence on mechanical strength of welded structure, failure load measurement using tensile-shear test, resistance spot welding simulation, residual stress measurement by X-ray diffraction method and analysis effect of welding parameters on the mechanical strength and the residual stresses. LÄS MER

5. 4. Impacts of Traffic Signal Control Strategies

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

   Sammanfattning : 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. LÄS MER

7. 5. Segmentation of 2D electrophoresis gel images for protein expression analysis

   Författare :Martin Persson; Högskolan i Halmstad; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Two-dimensional gel electrophoresis; Image analysis; Image segmentation; Proteomics; Structure tensors; Spot detection; Spot segmentation; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : .... LÄS MER