Sökning: "scale model study"

Visar resultat 11 - 15 av 1321 avhandlingar innehållade orden scale model study.

1. 11. Distribution of Ventilation Air and Heat by Buoyancy Forces inside Buildings : An Experimental Study

   Författare :Claes Blomqvist; Mats Sandberg; Per Heiselberg; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; building ventilation; thermal forces; buoyancy; gravity currents; large openings; heating; air quality; forced convection; free convection; Building engineering; Byggnadsteknik;

   Sammanfattning : The main task of the ventilation system in a building is to maintain the air quality and (together with the heating or cooling system) the thermal climate at an acceptable level within the building. This means that a sufficient amount of ventilation air at the appropriate temperature and quality must be supplied to satisfy thermal comfort and air quality demands and that this air is distributed to the parts of the building where people reside. LÄS MER

3. 12. Large-scale releases of native species : the mallard as a predictive model system

   Författare :Pär Söderquist; Högskolan Kristianstad; Sveriges lantbruksuniversitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; NATURVETENSKAP; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Anas platyrhynchos; Farmed; Hunting; Introgression; Longevity; Mallard; Migration; Morphology; Population genetic; Restocking; SNPs; Sweden;

   Sammanfattning : Human alteration of natural systems, and its consequences are of great concern and the impact on global ecosystems is one of the biggest threats that biodiversity stands before. Translocations of invasive species, as well as intraspecific contingents with non-native genotypes, whether they are deliberate or unintentional, are one such alteration and its consequences are continuously being assessed. LÄS MER

4. 13. Model Reduction Using Semidefinite Programming

   Författare :Aivar Sootla; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; semidefinite programming; model reduction; convex optimization;

   Sammanfattning : In this thesis model reduction methods for linear time invariant systems are investigated. The reduced models are computed using semidefinite programming. Two ways of imposing the stability constraint are considered. However, both approaches add a positivity constraint to the program. LÄS MER

5. 14. Sustainability of the Swedish Sugar Sector : Assessment Tool Development and Case Study Appraisal

   Författare :Barry Ness; LUCSUS; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; integrated assessment; DPSIR; scale; sugar beet; sugar; Sustainability science; sustainability assessment; proximity analysis; Scania; Sweden;

   Sammanfattning : This thesis contributes to the development of tools and methods for assessing sustainability and applies them to an assessment of the Swedish sugar production system. The thesis’ aims are to compile an overview of the existing approaches for assessing sustainability, to suggest a method(s) for structuring and analyzing complex sustainability issues, and to appraise sustainability impacts from Swedish sugar production. LÄS MER

7. 15. Att forma sitt rum : fullskalemodellering i participatoriska designprocesser

   Författare :Elisabeth Dalholm Hornyánszky; Institutioner vid LTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dwelling; work environment; user; space; language game; reflection in action; tacit knowledge; full-scale modeling; design process; design tool; participation; participatory design; case study; mock-up; Architecture; interior design; Arkitektur; inredningsarkitektur;

   Sammanfattning : Architects design work sometimes originates from a simplified view of human demands and needs, which may result in environments that do not fulfill the users requirements. This thesis refers to five different case studies where the affected users were involved in the creation of their dwellings or working environment. LÄS MER