Sökning: "Evenness"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet Evenness.

1. 1. Measures of Freedom of Choice

   Författare :Karin Enflo; Erik Carlson; Thomas Anderberg; Martin van Hees; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Freedom of Choice; Measure; Choice Set; Diversity; Cardinality; Evenness; Decision Theory; Metric Space; Practical Philosophy; Praktisk filosofi;

   Sammanfattning : This thesis studies the problem of measuring freedom of choice. It analyzes the concept of freedom of choice, discusses conditions that a measure should satisfy, and introduces a new class of measures that uniquely satisfy ten proposed conditions. LÄS MER

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

   Författare :Martin Larsson; Sigurdur Erlingsson; Anna Niska; Inge Hoff; KTH; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

4. 3. Vegetationssuccessioner - med speciell referens till Kvikkjokkdeltat

   Författare :Lars-Erik Liljelund; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Växtgeografi; Sverige; Lappland; Kvikkjokk;

   Sammanfattning : Clement's holological and Gleason's mereological approach about plant successions are. discussed. Ecological succession is here defined as a directed change of the space in time and is identified by immigration and extinction of populations. Establishment is a central process in all plant successions. LÄS MER

5. 4. The impact of past land-use change on floristic diversity in southern Sweden : a quantitative approach based on high-resolution pollen data

   Författare :Daniel Fredh; Kvartärgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis explores the relationship between land-use and floristic diversity over the last three millennia in the uplands of southern Sweden. A quantitative approach based on high-resolution pollen data was applied, using the Landscape Reconstruction Algorithm (LRA), historical maps/aerial photographs, palynological richness and new ways to estimate past evenness at regional and local spatial scales, which enable estimates of the rate and degree of change in land-use and floristic diversity. LÄS MER

7. 5. Plant species diversity in semi-natural grasslands. Effects of scale, landscape structure and habitat history

   Författare :Triin Reitalu; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; habitat fragmentation; landscape diversity; habitat connectivity; historical maps; continuity; land-use history;

   Sammanfattning : The thesis examines the impact of present and past landscape structure, habitat history and management on different aspects of present-day plant species diversity in fragmented semi-natural grasslands in Sweden and in Estonia. Species diversity was significantly associated with present and/or past grassland connectivity in the majority of the studies in the thesis. LÄS MER