Search for dissertations about: "common surface"

Showing result 1 - 5 of 891 swedish dissertations containing the words common surface.

2. 1. Perceptual Surface Reconstruction

   Author : Jens Månsson; Kognitionsvetenskap; []
   Keywords : HUMANIORA; HUMANITIES; system; kontroll; Psychology; Psykologi; numerisk analys; Datalogi; systems; control; numerical analysis; Surface; Contour; Depth; Vision; Binocular; Computer science;

   Abstract : How does the brain transform the 2-D light arrays in our eyes into a meaningful 3-D description of surfaces around us? What assumptions does the visual system make about the world when information is incomplete? And how are these assumptions computationally expressed in this perceptual reconstruction process? These questions, and other aspects of binocular depth perception are analysed from a theoretical and computational perspective, as well as through empirical investigations. In paper one, the fundamentals of stereopsis are briefly reviewed, and the difficulties related with resolving the (stereo) correspondence problem are particularly discussed. READ MORE

4. 2. Common Knowledge : lowland Maya urban farming at Xuch

   Author : Christian Isendahl; Luis Alberto Barba Pingarrón; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; Archaeology; Ecological settlement archaeology; Maya; urbanism; agriculture; architecture; ceramics; geochemistry; vegetation; soils; archaeoclimatic modelling; Preclassic; Classic; Postclassic; Colonial; Xuch; Puuc; Campeche; Arkeologi; Archaeology subjects; Arkeologiämnen; arkeologi; Archaeology;

   Abstract : During the second half of the first millennium AD, several large urban communities developed in the Puuc region of the northwest Yucatán Peninsula. Investigations of architecture and ceramics at Xuch provide a spatio-chronological framework demonstrating the rapid growth of an urban settlement culminating in the Terminal Classic, and its subsequent decline. READ MORE

5. 3. Cycle paths’ degradation processes and surface condition assessment

   Author : Martin Larsson; Sigurdur Erlingsson; Anna Niska; Inge Hoff; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; construction design; cycle paths; degradation; distress modes; maintenance; municipalities; survey; cycling comfort; road surface measurements; surface evenness; surface texture; Building Materials; Byggnadsmaterial;

   Abstract : A shift in modal share from car driving to cycling has many benefits, both from individual- and societal perspectives, e.g., better health from an increase in physical activity, lower levels of pollution and congestion. However, there are also some potential problems with such a shift. READ MORE

6. 4. Surface Chemical Characteristics of Chromium-alloyed Steel Powder and the Role of Process Parameters during Sintering

   Author : Dimitris Chasoglou; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbothermal reaction; sintering atmosphere; depth profiling; XPS AES; HR SEM EDX; water atomized powder; surface coverage; reduction oxidation; PM steels; sintering; Cr-Mn-spinel oxides; surface oxides;

   Abstract : Powder Metallurgy (PM) is a cost efficient method suitable for sustainable production of structural parts that have strict dimensional tolerances and complex geometries. It has been a common practice to utilize Ni and Cu as alloying elements in PM steels, but the high and fluctuating prices of Ni and the concerns around it associated with health hazards as well as the difficulty in recycling Cu lead the PM industry to search for effective alternatives such as Cr and Mn. READ MORE

7. 5. Surface Interactions in Powder Injection Moulding

   Author : Elisabeth Johansson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surfactants; powder injection moulding PIM ; rheology; steel powder; surface interactions; XPS; SIMS; adsorption; surface composition;

   Abstract : Powder Injection Moulding (PIM) is an attractive technique for producing complex components in large quantities my means of powder technology. The process includes mixing powder with a suitable binder, usually a thermoplastic polymer. Because of the large attractive forces between small particles the powder can be agglomerated in the binder. READ MORE