Sökning: "air transportation"

Visar resultat 6 - 10 av 103 avhandlingar innehållade orden air transportation.

  1. 6. ELM: Environmental Assessment of Fuel Supply Systems for Vehicle Fleets

    Författare :Magnus Blinge; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; exergy; biomass; alternative motor fuel; wnvironment; transportation; renewable; energy; Life Cycle Assessment; logistics; emission;

    Sammanfattning : This thesis is based on the idea of applying a logistics approach to fuel supply systems. The complete supply chain from energy raw material to end use in the vehicle is analysed while keeping track of energy conversion efficiency, exergy consumption and emissions to air. LÄS MER

  3. 7. Exploring patterns of empirical networks

    Författare :Luis E C Rocha; Petter Holme; Kimmo Kaski; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; complex systems; complex networks; network analysis; empirical networks; air transportation; consumer complaints; information technology; sexual contacts; epidemics; vaccination; Statistical physics; Statistisk fysik; Computational physics; Beräkningsfysik; Technology and social change; Teknik och social förändring; Epidemiology; Epidemiologi; Information technology; Informationsteknik; fysik; Physics; Statistics; statistik; Epidemiology; epidemiologi; Economics; nationalekonomi;

    Sammanfattning : We are constantly struggling to understand how nature works, trying to identify recurrent events and looking for analogies and relations between objects or individuals. Knowing patterns of behavior is powerful and fundamental for survival of any species. LÄS MER

  4. 8. Om framtida bärkraftiga transporter

    Författare :Ingrid Råde; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; land use; energy use; high-speed rail; air transport; sustainable transportation;

    Sammanfattning : .... LÄS MER

  5. 9. Public Transportation in a Systems Perspective A Conceptual Model and an Analytical Framework for Design and Evaluation

    Författare :Stig Franzén; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control theory; systems design; cybernetics; passenger transport; urban transport; systems perspective; conceptual model; systems engineering; human-machine system; public transportation;

    Sammanfattning : Today urban areas are faced with problems like traffic congestion, air pollution, and limited accessibility and transport policy issues are focused on the "sustainable city of the future". For decision-makers the crucial question is how, with limited financial resources, a system for public transportation should be designed and developed to provide attractive travel and transport services. LÄS MER

  7. 10. Ambient air pollution and transportation noise : how they affect mental health in older adults

    Författare :Jing Wu; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Whether environmental factors are associated with mental health issues among older adults remains unclear. This doctoral thesis aimed to determine the extent to which air pollution and transportation noise affect mental health in older adults. We used data from the Swedish National study on Aging and Care-Kungsholmen (SNAC-K). Study I PM2. LÄS MER