Search for dissertations about: "signalling system maintenance"

Showing result 1 - 5 of 22 swedish dissertations containing the words signalling system maintenance.

  2. 1. Dependability and maintenance analysis of railway signalling systems

    Author : Amparo Morant; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Railway signalling systems are composed of several different systems; each has its own purpose, but the main functionality of the overall system is determined by the interoperability between them. Railway signalling systems ensure the safe operation of the railway network, and their reliability and maintainability directly affect the capacity and availability of the railway network, in terms of both infrastructure and trains. READ MORE

  4. 2. Megalin, an Endocytotic Receptor with Signalling Potential

    Author : Mårten Larsson; Lars Rask; Bo Åkerström; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Megalin; LRP-2; Postsynaptic density-95; Retinol-binding protein; Oligodendrocytes; Central nervous system; Biokemi; Biochemistry; Biokemi;

    Abstract : Megalin is an endocytotic receptor belonging to the low-density lipoprotein family. It has often been viewed only as merely a scavenger receptor of absorptive and secretory epithelia. Recent work has revealed that the megalin intracellular domain contains several motifs potentially binding proteins involved in signal transduction. READ MORE

  5. 3. Maintenance decision support models for railway infrastructure using RAMS & LCC analyses

    Author : Ambika Prasad Patra; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Today's railway sector is imposing high demands for service quality on railway infrastructure managers. Since railway infrastructure has a long asset life, it requires efficient maintenance planning to perform effectively throughout its life cycle to meet these high demands. READ MORE

  6. 4. Dependability and safety evaluation of railway signalling systems based on field data

    Author : Amparo Morant; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Railway signalling systems can be considered a group of complex systems that together provide control, supervision and protection of railway operation. When a failure occurs in the railway signalling system, other safety mitigation measures are put into place to continue railway operation, e.g. READ MORE

  7. 5. Track circuits’ robustness : Modeling, measurement and simulation

    Author : Emilio Rodriguez; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Track circuit; Relay; False positive signals; Signalling in railway; Modelling; Simulation; Testing; Robustness; Interoperability; Reliability; Railway Infrastructure; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : In countries with rough weather conditions, frequent delays cause railway companies to waste time and money. Many of these delays are related to the train detection systems, as the old DC track circuits are still used in some countries, including Sweden, our case study. READ MORE