Sökning: "SRA - ICT"

Visar resultat 11 - 15 av 83 avhandlingar innehållade orden SRA - ICT.

  1. 11. Simulation and Characterization of Silicon Carbide Power Bipolar Junction Transistors

    Författare :Benedetto Buono; Mikael Östling; Gunnar Malm; Martin Domeij; Lothar Frey; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide; power device; BJT; diode; simulation; characterization; current gain; on-resistance; breakdown voltage; forward voltage drop; degradation; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : The superior characteristics of silicon carbide, compared with silicon, have suggested considering this material for the next generation of power semiconductor devices. Among the different power switches, the bipolar junction transistor (BJT) can provide a very low forward voltage drop, a high current capability and a fast switching speed. LÄS MER

  3. 12. IT Service Delivery in Nicaraguan Internet Service Providers : analysis and Assessment

    Författare :Will Johnny Flores Delgadillo; Paul Johannesson; Lazar Rusu; Eva Söderström; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; IT; service delivery; Internet service provider; Information technology; Informationsteknik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning :   The thesis addresses the research question: How to describe, understand, and explain IT service delivery? Based on the research question, the following research questions were derived:  How to analyse IT service delivery based on ITIL in order to determine its current situation? How to formalize elements of IT service delivery in maturity level that can be used to assess its current status? These research questions are answered by two IT artefacts: an analysis method and a maturity model for IT service delivery. Both of them are constructed by design-science research guidelines. LÄS MER

  4. 13. Hybrid Integration of Active Bio-signal Cable with Intelligent Electrode : Steps toward Wearable Pervasive-Healthcare Applications

    Författare :Yang Geng; Tenhunen Hannu; Zhang Yuan-Ting; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Personalized and pervasive healthcare help seamlessly integrate healthcare and wellness into people’s daily life, independent of time and space. With the developments in biomedical sensing technologies nowadays, silicon based integrated circuits have shown great advantages in terms of tiny physical size, and low power consumption. LÄS MER

  5. 14. Type-II interband quantum dot photodetectors

    Författare :Oscar Gustafsson; Mattias Hammar; Wenquan Ma; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photodetector; quantum dot; infrared; MOVPE; thermal imaging; type-II; photoluminescence; III V; InSb; InGaSb; InAs; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Photon detectors based on single-crystalline materials are of great interest for high performance imaging applications due to their low noise and fast response. The major detector materials for sensing in the long-wavelength infrared (LWIR) band (8-14 µm) are currently HgCdTe (MCT) and AlGaAs/GaAs quantum wells (QW) used in intraband-based quantum-well infrared photodetectors (QWIPs). LÄS MER

  7. 15. Security System for Mobile Commerce Applications

    Författare :Ioannis Kounelis; Sead Muftic; Fisseha Mekuria; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; security; privacy; mobile applications; mobile commerce; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : .... LÄS MER