Sökning: "anna winter"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden anna winter.

1. 1. Winter maintenance and cycleways

   Författare :Anna Bergström; KTH; []
   Nyckelord :cycleways; winter maintenance; maintenance service level; mode choice; winter cycling frequency; winter road condition assessment; bicycle measurements; friction measurement; winter maintenance equipment;

   Sammanfattning : Increasing cycling as a means of personal travel couldgenerate environmental benefits if associated with acorresponding decrease in car-based transport. In seeking topromote cycling in wintertime, it is desirable to understandhow important the road surface condition is compared to otherfactors in people's decision to cycle or not. LÄS MER

3. 2. Indirect effects of unemployment and low earnings : Crime and children's school performance

   Författare :Anna Nilsson; Jonas Agell; Rudolf Winter-Ebmer; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

   Sammanfattning : This thesis consists of three self-contained essays that consider indirect effects of unemployment and low earnings on crime and children’s school performance. The first essay, Crime, unemployment and labor market programs in turbulent times (joint with Jonas Agell), investigates the effect of unemployment and participation in labor market programs, in general and among youth, on Swedish crime rates using a new panel data set for Swedish municipalities for the period 1996-2000. LÄS MER

4. 3. Winter maintenance service levels on cycleways

   Författare :Anna Bergström; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

5. 4. Winter Road Conditions and Traffic Accidents in Sweden and UK - Present and Future Climate Scenarios

   Författare :Anna K Andersson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Winter road condition; Slipperiness; Traffic accident; Winter road maintenance; Climate change;

   Sammanfattning : This thesis investigates the distribution of slippery roads in Sweden and the UK for the present climate and how this may be affected by climate change for the rest of the century. It also addresses future scenarios for traffic accidents and winter road maintenance. LÄS MER

7. 5. The potential of wetlands for mitigation of eutrophication and brownification

   Författare :Anna Borgström; Akvatisk ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Brownification; Constructed wetlands; Cyanobacteria; Eutrophication; Filamentous algae; Green algae; Macrophytes; Multifunctionality; Nitrogen; Phosphorus; Total organic carbon; Water color;

   Sammanfattning : Increasing nutrient concentrations (eutrophication) and water color due to dissolved organic matter (brownification) pose continuous threats to freshwater ecosystems worldwide, threatening ecosystem services like drinking water supply. Changing the increasing trends of eutrophication and brownification on our aquatic ecosystems is challenging. LÄS MER