Sökning: "Transportinfrastruktur"

Hittade 4 avhandlingar innehållade ordet Transportinfrastruktur.

  1. 1. DEM Modelling of Unbound Granular Materials for Transport Infrastructures On soil fabric and rockfill embankments

    Författare :Ricardo de Frias Lopez; Johan Silfwerbrand; Leena Korkiala-Tanttu; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Discrete element method; granular materials; particle-scale behaviour; particle degradation; permanent deformation; resilient modulus; rockfill embankment; soil fabric; Diskreta elementmetoden; grusmaterial; verkningssätt på partikelnivå; nedbrytning; permanent deformation; styvhet; stenfylld bank; skelettstruktur; Transport Infrastructure; Transportinfrastruktur;

    Sammanfattning : Unbound granular materials (UGM) are widely used as load-bearing layers and for embankment construction within transport infrastructures. These play a significant role on operation and maintenance of transportation systems. However, pavement and railway engineering still today rely heavily on empirical models based on macroscopic observations. LÄS MER

  2. 2. Ny väg till nya vägar och järnvägar : Finanseringspragmatism och planeringsrationalism vid beslut om infrastrukturinvesteringar

    Detta är en avhandling från Lunds universitet

    Författare :John Hultén; [2012]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; pragmatism; rationalism; railway investments; road investments; transport infrastructure; co-financing; alternative financing; investment planning; planning; Decision-making process;

    Sammanfattning : Investment planning is a decision-making process with specific characteristics. It is often seen as a rational quest for solutions that are in the public interest, and the dominant discourse tends to be technical and economic. LÄS MER

  3. 3. Change in the cage Exploring an organisaitonal field: Sweden's biofuel region

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Christopher Nicol; Tommy Jensen; Kiflemariam Hamde; Stefan Jonsson; [2013]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Institutional theory; organisational field change; institutional forces; structuration processes; triggers for change; Institutionell teori; organisatorisk fält förändring; institutionella krafter; struktureringsteori; processer; utlösare av förändring; företagsekonomi; Business Studies;

    Sammanfattning : This Ph.D. thesis seeks to better understand how change occurs within a group of organisations. Aiming to make a contribution to institutional theory, it brings together three main schools, namely: old, new and neoinstitutionalism, in an integrative approach for understanding organisational field change. LÄS MER

  4. 4. Congestion Effects in Transport Modelling and Forecasting

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Jens West; Maria Börjesson; Carlo Giamoco Prato; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transportvetenskap; Transport Science;

    Sammanfattning : Transport investments and policies are increasingly turned towards dealing with transport congestion rather than with shortening the potential free flow travel time. However, appraisal methodologies for projects meant to reduce congestion are relatively less well developed compared to methodologies for projects aiming to reduce travel times. LÄS MER