Sökning: "repetitive behaviour"

Visar resultat 1 - 5 av 21 avhandlingar innehållade orden repetitive behaviour.

  1. 1. Partial Discharges at Repetitive Rapidly Changing Voltages

    Författare :Elisabeth Lindell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high dV dt; oil paper insulation.; repetitive voltages; short rise time; partial discharge measuring techniques; twisted pair; square-like voltages; corona; Partial discharges PDs ;

    Sammanfattning : Electrical insulation can today be exposed to voltages having considerably higherfrequency components than the conventional power frequency AC 50 Hz or 60 Hz,for example due to the increased use of power electronics in power systems. Thishas in a number of cases caused unexpected behaviour, including failures. LÄS MER

  3. 2. On the fracture behaviour of softwood : a combined experimental and computational study of the interaction between fracture behaviour and material anatomy

    Författare :Lars Olof Jernkvist; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : The propensity for fracture, i.e. failure through separation of the material, is a factor that must be regarded in the design of wooden structures, but also in wood machining operations and drying. LÄS MER

  4. 3. Asperger Syndrome: Social functioning in relation to behavioural and cognitive traits from infancy to young adulthood

    Författare :Petra Dewrang; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Asperger syndrome; attention; early diagnosis; executive function; parental concern; repetitive behaviour; self-perception; social cognition;

    Sammanfattning : Asperger syndrome: Social functioning in relation to behavioural and cognitive traits from infancy to young adulthood. Department of Psychology, University of Gothenburg, Sweden. Asperger syndrome (AS) is a disorder within the autism spectrum and it is a lifelong disability that affects life in an amount of aspects. LÄS MER

  5. 4. Measurement and Analysis of Partial Discharges at Semi-Square Voltages

    Författare :Elisabeth Lindell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; space charge; Partial discharges PDs ; short rise time; partial discharge measuring techniques; square-like voltages; repetitive voltages; corona;

    Sammanfattning : Insulation is today being exposed to voltages having considerably higher frequency components than the conventional power frequency AC 50 Hz or 60 Hz, for example in motors supplied by adjustable speed drives based on pulse width modulated converters. This has in many cases caused unexpected behaviour of the insulation systems. LÄS MER

  7. 5. Exploring the Shadows of Project Management

    Författare :Jan Wickenberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; informal organization; project management framework; project management; organization theory; formal organization; shadow system;

    Sammanfattning : The project has become a preferred way of organizing work. Two major reasons for this trend are demands for increased market responsiveness and the empowering of workgroups in order to improve employee commitment. LÄS MER