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Visar resultat 6 - 10 av 88 avhandlingar som matchar ovanstående sökkriterier.

  1. 6. Interprocess communication utilising special purpose hardware

    Författare :Johan Furunäs Åkesson; Hans Hansson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Systems; Datorteknik;

    Sammanfattning : Real-Time Systems are computer systems with constraints on the timing of actions. To ease the development and maintenance of application software, Real-time Systems often make use of a Real-Time Operating System (RTOS). Its main task is scheduling of application processes (tasks). LÄS MER

  3. 7. Chemical Vapor Depositionof Si and SiGe Films for High-Speed Bipolar Transistors

    Författare :Johan Pejnefors; KTH; []
    Nyckelord :chemical vapor deposition CVD ; bipolar junction transistor BJT ; heterojunction bipolar transistor HBT ; silicon-germanium SiGe ; epitaxy; poly-Si emitter; in situ doping; non-selective epitaxy NSEG ; loading effect; emissivity effect;

    Sammanfattning : This thesis deals with the main aspects in chemical vapordeposition (CVD) of silicon (Si) and silicon-germanium (Si1-xGex) films for high-speed bipolar transistors.In situdoping of polycrystalline silicon (poly-Si)using phosphine (PH3) and disilane (Si2H6) in a low-pressure CVD reactor was investigated toestablish a poly-Si emitter fabrication process. LÄS MER

  4. 8. Destinationsmarknadsföring : en studie av turism ur ett producentperspektiv

    Författare :Yvonne von Friedrichs Grängsjö; Lars-Johan Lindqvist; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; tourism; destination marketing; relationships; network; co-operation; competition; norms; Marknadsundersökning; turism; marknadsföring; företagssamarbete; marknadsanalys; marknadsforskning; platsmarknadsföring; Business Administration; företagsekonomi; Business studies;

    Sammanfattning : The analysis of the marketing of a tourist destination brings into question quite different issues than those that apply to a single company. The marketing of a tourist destination demands the participation of many stakeholders, because of the complexity of the tourist product and the fact that the production and the consumption of the product both take place at the destination. LÄS MER

  5. 9. Galactic Structure Revealed by Space Astrometry

    Författare :Johan Holmberg; Astronomi - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomi; cosmic chemistry; Galactic structure; Milky Way Galaxy; Galactic kinematics and dynamics; Galactic chemical evolution; moving groups; solar neighbourhood; dark matter; astrometry; Hipparcos; space research; Astronomy; rymdvetenskap; kosmisk kemi; Space technology; Rymdteknik; Fysicumarkivet A:2001:Holmberg;

    Sammanfattning : This work demonstrates how the structure of our Galaxy, the Milky Way, can be unveiled with the use of space astrometry. It consists of two parts, of which the first is a brief introduction to the fields of Galactic structure, covering the Galaxy's stellar constituents, how the Galaxy was formed and how it has evolved over time, both chemically and kinematically. LÄS MER

  7. 10. Atopy in children : association to life style

    Författare :Johan Alm; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Anthroposophy; atopy; BCG; children; life style; microflora NRAMP1;

    Sammanfattning : The prevalence of allergic diseases has risen; in some countries nearly half the children suffer from some type of hypersensitivity. The reason for this increase is obscure, but one explanation is suggested to be a changing panorama of microbial stimulation early in life. LÄS MER