Sökning: "climatic theory"

Visar resultat 11 - 15 av 19 avhandlingar innehållade orden climatic theory.

  1. 11. Effects of Post-Glacial Range Expansions and Population Bottlenecks on Species Richness

    Författare :Anders Ödeen; Godfrey Hewitt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Peripatric speciation; bottlenecks; mating asymmetries; Kaneshiro model; Quaternary ice-ages; phylogeny; Motacilla; Motacilla flava; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Animal Ecology; zooekologi;

    Sammanfattning : This thesis relates modern speciation theory to the effects of sudden changes in the range and size of populations. Special reference is made to the climatic oscillations during the Quaternary ice ages. LÄS MER

  3. 12. Microclimate Load: Transformed Weather Observations for Use in Durable Building Design

    Författare :Anneli Högberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microclimate load; weather observations; natural degradation conditions; durable design; transformation;

    Sammanfattning : This study investigates the microclimate load, i.e. conditions prevailing in the immediate atmospheric environment of a building, to establish the natural conditions of degradation for a building surface at a specific location. LÄS MER

  4. 13. Outdoor Comfort in Cold Climates : Integrating Microclimate Factors in Urban Design

    Författare :Saeed Ebrahimabadi; Sigrid Reiter; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Architecture; Arkitektur;

    Sammanfattning : Designing urban spaces that provide outdoor comfort is an important but challenging goal in subarctic climates. An approach to urban design that is sensitive to subarctic climatic conditions is essential, but this requires effective incorporation of urban climate knowledge into urban design, which presently is impeded by several barriers. LÄS MER

  5. 14. Investigation of the structural response of pavements in cold region using instrumented test site data

    Författare :Denis Saliko; Sigurdur Erlingsson; Pauli Kolisoja; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flexible pavement; environmental impact; seasonal variation; heavy loading; non-destructive testing; instrumented section; Flexibla vägkonstruktioner; Omgivningspåverkan; Säsongvariation; Tung trafikbelastning; Oförstörande provning; Instrumenterade teststräckor; Byggvetenskap; Civil and Architectural Engineering; Building Materials; Byggnadsmaterial;

    Sammanfattning : The structural behaviour of pavement structures is known to be affected by the traffic-related loading and by the ambient factors to which the structure is subjected. A new mechanistic-empirical (M-E) pavement design method is under development in Sweden with the main purpose to adequately predict pavement structural response and performance. LÄS MER

  7. 15. Dust from mining area and proposal of dust emission factors

    Författare :Qi Jia; John McManus; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Sammanfattning : Mining generates great deal of particulate matter, especially for surface mining. The principle of dust generation is based on the theory of soil wind erosion. This thesis theoretically and experimentally dealt with mining dust. In chapter 1 the development of study on soil erosion by wind and mining dust were introduced. LÄS MER