Sökning: "lens shaping"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden lens shaping.

1. 1. Design and Performance of Some Components for a Millimeter Wave Imaging Receiver

   Författare :Guillermo F. Delgado Gunckel; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nipi MQW; imaging receiver; lens shaping; diplexer; kinoform; opto-electronic quasi-optical modulation; dielectric lenses; sideband filter; diffractive optics;

   Sammanfattning : This thesis deals with the design and performance of some novel devices for an imaging receiver, operating in the frequency band centered at 100 GHz, to be used in radio astronomy research. The emphasis is given on simple, small and reliable devices in order to reduce the complexity of an already complex receiver. LÄS MER

3. 2. Bridging Local Constraints and Global Priorities : The Shaping of Swedish Biogas Markets

   Författare :Nancy Brett; Kristina Trygg; Stefan Andersson; Harald Rohracher; Tomas Moe Skjølsvold; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Biofertiliser; Marketisation; Valuation; Regional studies; Sweden; Biogas; Biogödsel; Marknadisering; Värdering; Regionala studier; Sverige;

   Sammanfattning : Biogas offers a sustainable alternative to fossil fuels, promoting circularity and local economic growth. It is, therefore, increasingly prioritised by decision-makers within Sweden and the EU. Despite its advantages, the Swedish market is perceived as underachieving in terms of scale and penetration. LÄS MER

4. 3. Public Sector Open Data : Shaping an arena for innovation and value creation

   Författare :Josefin Lassinantti; Debra Howcroft; Luleå tekniska universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Informationssystem; Information Systems; Informatik; Social Informatics;

   Sammanfattning : This research initially sprung out of a natural curiosity for the emerging phenomenon of open data with its combination of democratic perspectives, since it is based on freedom of information legislation, and its potential for a multitude of citizen driven innovations. Research showed that while open data repeatedly was being envisioned for having immense potential of leading to a multitude of innovations and societal impacts, most of the attention still remained on challenges related to enable a broad realisation of open data, that is, putting more data on the web. LÄS MER

5. 4. The use of global data to uncover how humans shape flood and drought risk

   Författare :Sara Lindersson; Giuliano Di Baldassarre; Johanna Mård; Luigia Brandimarte; Brett Sanders; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; natural hazards; hydrological disasters; environmental geography; global geospatial data; international databases; disaster losses; disaster consequences; water management; dams and reservoirs; floodplains; hydrological drought; social vulnerability; economic inequality; Anthropocene; Geovetenskap med inriktning mot miljöanalys; Earth Science with specialization in Environmental Analysis;

   Sammanfattning : The human consequences of flood and drought disasters are widespread and detrimental. Large-scale studies, drawing on global geodata products and international databases, can systematically examine how anthropogenic megatrends shape disaster risk and test the generalisability of findings from other scientific methodologies. LÄS MER

7. 5. När arbetet blev farligt : arbetarskyddet och det medicinska tänkandet 1884-1919

   Författare :Maria Arvidsson; Bengt-Erik Eriksson; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Health hazards; factory work; history of occupational health; occupational hygiene; occupational diseese; causes of disease; prevention; responsibility; Sweden; turn of the 20th century; Arbetarskydd; medicinska aspekter; industriarbete; yrkesmedicin; Sverige; sekelskiftet; 1900-talet; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : In the end of the1940's Occupational Medicine was institutionalised in Sweden. Health hazilards in the work place was not a new field for the Swedish physicians. They had been preocrcupied with these problems for a long time. LÄS MER