Sökning: "Johan Linden"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Johan Linden.

  1. 1. TV-ledning i konkurrens : En studie av Sveriges Television publicistiska ledning 1997-2000

    Författare :Johan Lindén; Sigurd Allern; Jesper Strömbäck; Knut Helland; Stockholms universitet; []
    Nyckelord :journalism; television; public service; creative industries; management; strategy; competition; market; journalistik; Journalism;

    Sammanfattning : In the years around the turn of the century, the media landscape changed. This thesis studies how these challenges were met by Sveriges Television. The aim is to describe and analyse how SVT was managed and organized, between 1997 and 2000, and to describe how new strategies for the 2000s were developed. LÄS MER

  3. 2. On Safe and Secure Communication in Process Automation

    Författare :Johan Åkerberg; Mats Björkman; Maria Lindén; Mikael Gidlund; Lutz Rauchhaupt; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Science; datavetenskap;

    Sammanfattning : In the process industry, network and system security have become important since the introduction of Ethernet-based fieldbus protocols. As an example, a successful attack on a power plant, supporting large cities with energy, could result in a temporal but total power loss. Such attacks could be devastating for the society. LÄS MER

  4. 3. On Security in Safety-Critical Process Control

    Författare :Johan Åkerberg; Mats Björkman; Maria Lindén; Bengt Ahlgren; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer and systems science; Data- och systemvetenskap; Computer Science; datavetenskap;

    Sammanfattning : This Licentiate thesis is about security in automation networks with emphasis on fieldbus communication. In the process industry, network and system security have become even more important since the introduction of Ethernet-based fieldbus protocols. LÄS MER

  5. 4. Circumpolar impacts of herbivores on Arctic tundra vegetation

    Författare :Elin Lindén; Johan Olofsson; Maja K. Sundqvist; Mariska te Beest; Elisabeth S. Bakker; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; herbivores; grazing; Arctic; circumpolar; tundra; vegetation; plant defence; secondary metabolites; shrub birch; exclosures; vegetation; species diversity; biology; biologi;

    Sammanfattning : Arctic tundra vegetation provides many ecological services that have implications for the global climate. However, the tundra biome is currently changing in response to increasing temperatures. Herbivores may mitigate some of these responses to warming through their impact on Arctic vegetation. LÄS MER

  7. 5. Mössbauer Spectroscopy of Meteoritic and Synthetic Fe-Ni Alloys

    Författare :Yassir Ahmed Mohamed Abdu; Hans Annersten; Tore Ericsson; Johan Linden; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Meteorites; Tetrataenite; Antitaenite; Mössbauer spectroscopy; Mechanical alloying; Fe-Ni alloys; High pressure; Geovetenskap; Earth sciences; Geovetenskap; mineralogi; petrologi och tektonik; Mineral Chemistry; Petrology and Tectonics;

    Sammanfattning : This thesis reports on the results of investigating Fe-containing minerals in meteorites, with focus on Fe-Ni minerals and their magnetic properties, along with some synthetic Fe-Ni analogues. The New Halfa meteorite, which fell in Sudan 1994, has been studied using Mössbauer spectroscopy, X-ray diffraction, and electron microprobe analysis techniques, and classified as an ordinary L-type chondrite of petrologic type 4. LÄS MER