Search for dissertations about: "Informationsteknik - Datorteknik"

Showing result 11 - 14 of 14 swedish dissertations containing the words Informationsteknik - Datorteknik.

  1. 11. Architectures for Service Differentiation in Overloaded Internet Servers

    Author : Thiemo Voigt; Peter Druschel; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Internet; Web Servers; Operating Systems; Service Differentiation; Admission Control; Information technology; Informationsteknik; Computer Systems; Datorteknik;

    Abstract : Web servers become overloaded when one or several server resources such as network interface, CPU and disk become overutilized. Server overload leads to low server throughput and long response times experienced by the clients. Traditional server design includes only marginal or no support for overload protection. READ MORE

  2. 12. 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

  3. 13. Clocks, DBMs and States in Timed Systems

    Author : Johan Bengtsson; Joost-Pieter Katoen; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Information technology; Informationsteknik; Datavetenskap; Computer Science;

    Abstract : Today, computers are used to control various technical systems in our society. In many cases, time plays a crucial role in the operation of computers embedded in such systems. This thesis is about techniques and tools for the analysis of timing behaviours of computer systems. READ MORE

  4. 14. Efficient Web Services for End-To-End Interoperability of Embedded Systems

    Author : Rumen Kyusakov; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Web services; Embedded; EXIP; EXI; WSN; XML; Interoperability; SOA; Information technology - Computer engineering; Informationsteknik - Datorteknik; Industriell elektronik; Industrial Electronics; Intelligent industrial processes AERI ; Intelligenta industriella processer FOI ;

    Abstract : As the number of Internet-connected devices rapidly grows, it has become ever more challenging to develop and maintain purpose-made tightly integrated distributed embedded systems. Instead, the Internet of Things (IoT) approach, based on standardized interfaces and open communication protocols, enables support for various applications with the possibility of extension to provide additional services that were not necessarily available at the initial deployment. READ MORE