Sökning: "road transportation"

Visar resultat 1 - 5 av 164 avhandlingar innehållade orden road transportation.

  1. 1. Intermodal Road-Rail Transportation for Express Transport Services

    Författare :Sofia Ohnell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transport services; Intermodal transportation; transport systems; modelling; express transportation;

    Sammanfattning : Express transport services are produced in highly modularised transport systems, a fact that implies that one subsystem can be exchanged for another without causing a need for major changes in other parts of the system. Express goods are not common on a large scale in freight railway transport systems, as those are often not considered reliable enough for time-critical goods. LÄS MER

  2. 2. Transportation asset management : Quality related accounting, measurements and use in road management processes

    Författare :Berth Jonsson; Hans Lind; Lars Westin; KTH; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Sammanfattning : Today there are shortcomings in monitoring, control, analyses, learning and reporting of the results of activities and operations in the road management processes. There are also shortcomings in transparency and verifiability, in knowledge of road management’s costs and life cycle costs, of the road capital’s standard and condition and in measures of quality deficiency costs, productivity and maintenance backlog. LÄS MER

  3. 3. Energy Efficiency in Winter Road Maintenance - A Road Climatological Perspective

    Författare :Lina Nordin; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Road climate; RWIS; frost; snow; fuel consumption; heavy-duty vehicles; route optimisation programme; energy efficiency; winter road maintenance;

    Sammanfattning : Practices in winter road maintenance are dependent on the climate and weather impacting roads and the road users’ requirements. As in many other fields of transportation, it is of interest to investigate fuel efficiency potentials in the different aspects of the road maintenance area. LÄS MER

  4. 4. Prometheus at the wheel : Representations of road transport informatics

    Författare :Oskar Juhlin; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ethnography; engineering; representational practice; testing; technical demonstration; constructivism; road transport informatics; intelligent transportation systems; situated practice; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : The dissertation deals with the challenge of developing information technology for road transport, a field often referred to as Road Transport Informatics. Oskar Juhlin studies in particular how engineers cope with the contingent and social aspects of the design process and of road use. LÄS MER

  5. 5. On the road : Social aspects of commuting long distances to work

    Författare :Erika Sandow; Kerstin Westin; Örjan Pettersson; Susan Hanson; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Long-distance commuting; social aspects; households; gender differences; sparsely populated areas; longitudinal study; register data; Sweden; Human geography; economic geography; Kulturgeografi; ekonomisk geografi; Social and Economic Geography; kulturgeografi;

    Sammanfattning : With its point of departure of increasing numbers of people being engaged in commuting, the aim of this thesis is to reveal prerequisites for and consequences of long-distance commuting in Sweden for the individual and his or her partner. Special attention has been given to prerequisites for long-distance commuting in sparsely populated areas, and to social consequences related to long-distance commuting in terms of gender differences in commuting patterns, earnings and separation. LÄS MER