Sökning: "the zero article"

Visar resultat 6 - 10 av 20 avhandlingar innehållade orden the zero article.

  1. 6. The Potential of Driver Education to Reduce Traffic Crashes Involving Young Drivers

    Författare :Anders Nyberg; Nils Petter Gregersen; Lars Åberg; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Driver education; Young drivers; Public health; Traffic safety. Attitudes; Questionnnaires; Crashes; Social medicine; Socialmedicin;

    Sammanfattning : Traffic fatalities and injuries among young drivers as a result of road crashes constitute a serious public health problem. The ultimate goal of traffic safety work in Sweden has been formulated in Vision Zero, which includes an image of a future in which no one will be killed or seriously injured in traffic crashes. LÄS MER

  3. 7. Contributions to the Theory of Measures of Association for Ordinal Variables

    Författare :Joakim Ekström; Rolf Larsson; Albert Satorra; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistics; Statistik; Statistics; statistik;

    Sammanfattning : In this thesis, we consider measures of association for ordinal variables from a theoretical perspective. In particular, we study the phi-coefficient, the tetrachoric correlation coefficient and the polychoric correlation coefficient. LÄS MER

  4. 8. Studies of MISiC-FET sensors for car exhaust gas monitoring

    Författare :Helena Wingbrant; Anita Lloyd Spetz; Martin Eickhoff; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; field effect sensor; gas detection; selective catalytic reduction; lambda; cold start; ammonia; silicon carbide; engine exhaust; Physics; Fysik;

    Sammanfattning : The increasing size of the car fleet makes it important to find ways of lowering the amounts of pollutants from each individual diesel or gasoline engine to almost zero levels. The pollutants from these engines predominantly originate from emissions at cold start, in the case when gasoline is utilized, and high NOx emissions and particulates from diesel engines. LÄS MER

  5. 9. Ethical Aspects of Radiation Risk Management

    Författare :Per Wikman-Svahn; John Cantwell; Carl F. Cranor; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; radiation protection; radiological protection; nuclear power; nuclear energy; social issues; ethical issues; ethics; risk; uncertainty; value judgments; precautionary principle; distributive issues; justice; limits; prioritarianism; responsibility; egalitarianism; black swan; black elephant; risk management;

    Sammanfattning : This thesis is based on the assumption that the intersection of moral philosophy and practical risk management is a rewarding area to study. In particular, the thesis assumes that concepts, ideas, and methods that are used in moral philosophy can be of great benefit for risk analysis, but also that practices in risk regulation provide a useful testing ground for moral philosophical theories. LÄS MER

  7. 10. Development of high temperature SiC based field effect sensors for internal combustion engine exhaust gas monitoring

    Författare :Helena Wingbrant; Anita Lloyd-Spetz; Karin Larsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; field effect sensor; gas detection; selective catalytic reduction; lambda; cold start; ammonia; silicon carbide; engine exhaust.; Physics; Fysik;

    Sammanfattning : While the car fleet becomes increasingly larger it is important to lower the amounts of pollutants from each individual diesel or gasoline engine to almost zero levels. The pollutants from these engines predominantly originate from high NOx emissions and particulates, in the case when diesel is utilized, and emissions at cold start from gasoline engines. LÄS MER