Sökning: "commuters"

Visar resultat 6 - 10 av 28 avhandlingar innehållade ordet commuters.

  1. 6. Studies on bikeability in a metropolitan area using the active commuting route environment scale (ACRES)

    Författare :Lina Wahlgren; Peter Schantz; Henrik Gustafsson; Pekka Oja; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; active transport; bicycle commuting; bikeability; multiple linear regression analysis; perception; reliability; route environment; validity; Sports; Idrott; Sports Science; Idrottsvetenskap; Samhällsvetenskap Humaniora;

    Sammanfattning : Background: The Active Commuting Route Environment Scale (ACRES) was developed to study active commuters’ perceptions of their route environments. The overall aims were to assess the measuring properties of the ACRES and study active bicycle commuters’ perceptions of their commuting route environments. LÄS MER

  3. 7. The heart rate method for estimating oxygen uptake in walking and cycle commuting : Evaluations based on reproducibility and validity studies of the heart rate method and a portable metabolic system

    Författare :Jane Salier Eriksson; Peter Schantz; Hans Rosdahl; Jostein Hallén; Gymnastik- och idrottshögskolan; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Heart rate; Oxygen consumption; Validity; Reproducibility; Oxycon Mobile; Douglas Bag Method; Cycle commuting; Walking commuting; Medicin Teknik; Medicine Technology;

    Sammanfattning : Walking and cycling to work can contribute to population health, but more objective knowledge concerning exercise intensities, oxygen uptake and the metabolic demands of this physical activity is needed for this and other evaluations. To attain this, valid and reliable instruments are a requirement. LÄS MER

  4. 8. Volatile Hydrocarbons in Ambient Air. Gas Chromatographic Assessment, Emissions and Human Exposure

    Författare :Gunnar Barrefors; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; adsorbent sampling; 1; gas chromatography; biomass burning; Benzene; ethene; vehicle emissions; urban air; tobacco smoke; 3-butadiene;

    Sammanfattning : Hydrocarbons in ambient air constitute a potential health risk for a large number of individuals. The work reported in this thesis focusses on human exposure to volatile hydrocarbons in ambient air. The analytical determinations were made by adsorbent sampling followed by thermal desorption and gas chromatography. LÄS MER

  5. 9. Is time money? Philosophical perspectives on the monetary valuation of travel time

    Författare :Maria Nordström; Karin Edvardsson Björnberg; Erik Angner; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; value of travel time; value of time; travel time; mobil- ity; urban transportation; Filosofi; Philosophy;

    Sammanfattning : This licentiate thesis consists of an introduction (‘kappa’) and three papers discussing various aspects of time as a commodity and the practice of valuing travel time.The first paper is an analysis of the properties of time as an economic resource taking into account literature on behavior with regard to time. LÄS MER

  7. 10. Assessment of PHEV potential to reduce fuel use in Sweden using GPS data for car movements

    Författare :Lars Henrik Björnsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PHEV potential; battery size; GPS-logging; PHEV viability; PHEV; Sweden; electrification; Individual movement pattern;

    Sammanfattning : Roughly 30% of Sweden’s total greenhouse gas emissions originate from transport. These emissions need to be reduced to be able to reach the by The Swedish parliament adopted goal of a carbon neutral society in 2050. LÄS MER