Search for dissertations about: "TEKNIKVETENSKAP Informationsteknik Telekommunikation"

Found 2 swedish dissertations containing the words TEKNIKVETENSKAP Informationsteknik Telekommunikation.

  1. 1. 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; Technology - Electrical engineering; electronics and photonics; Information technology - Telecommunication; Information technology - Computer engineering; Technology - Engineering physics; Information technology - Systems engineering; Teknikvetenskap - Elektroteknik; elektronik och fotonik; Informationsteknik - Telekommunikation; Informationsteknik - Datorteknik; Teknikvetenskap - Teknisk fysik; Informationsteknik - Systemteknik; 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

  2. 2. Secure and scalable roaming support in heterogeneous access networks

    Author : Daniel Granlund; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Information technology - Telecommunication; Informationsteknik - Telekommunikation; Distribuerade datorsystem; Mobile and Pervasive Computing;

    Abstract : Mobility support for users connecting to the Internet is an increasing trend. Different types of access networks like WiFi, CDMA, and UMTS are available, creating a heterogeneous access network environment. In the Internet today, there are a number of providers of various sizes supporting different technologies. READ MORE