Sökning: "Rickard Olsson"

Hittade 4 avhandlingar innehållade orden Rickard Olsson.

  1. 1. Signal processing and high speed imaging as monitoring tools for pulsed laser welding

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Rickard Olsson; Luleå tekniska universitet.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser welding; digital signal processing; High speed imaging; monitoring; Kalman filtering; Materials science - Other processing assembly; Teknisk materialvetenskap - Övrig bearbetning sammanfogning; Produktionsutveckling; Manufacturing Systems Engineering;

    Sammanfattning : In Laser Materials Processing there has always been a need for suitable methods to supervise and monitor the processes on line, to ensure correct production quality or to trigger alarms when failures are detected. Numerous investigations have been made in this field, including experimental and theoretical work. LÄS MER

  2. 2. Analysis and Monitoring of Laser Welding and Surface Texturing

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Rickard Olsson; Luleå tekniska universitet.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser welding; monitoring; Signal processing; laser texturing; texture analysis; Produktionsutveckling; Manufacturing Systems Engineering;

    Sammanfattning : This thesis can be conveniently divided into three sections as follows;Part I. Monitoring of laser welding In laser materials processing there has always been a need for suitable methods to supervise and monitor the processes on-line, to ensure correct production quality or to trigger alarms when failures are detected. LÄS MER

  3. 3. Portfolio management under transaction costs: Model development and Swedish evidence

    Detta är en avhandling från Umeå : Handelshögskolan

    Författare :Rickard Olsson; Umeå universitet.; [2005]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Business studies; Företagsekonomi; SOCIAL SCIENCES Business and economics Business studies; SAMHÄLLSVETENSKAP Ekonomi Företagsekonomi;

    Sammanfattning : Portfolio performance evaluations indicate that managed stock portfolios on average underperform relevant benchmarks. Transaction costs arise inevitably when stocks are bought and sold, but the majority of the research on portfolio management does not consider such costs, let alone transaction costs including price impact costs. LÄS MER

  4. 4. Surface reactions on mineral particles controlling the hydrolysis of glucose phosphates

    Detta är en avhandling från Umeå : Kemiska institutionen, Umeå universitet

    Författare :Rickard Olsson; Umeå universitet.; [2011]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE Chemistry; MEDICIN Kemi;

    Sammanfattning : Phosphorus (P) is an essential nutrient. A significant amount of soil P may be in the form of organophosphates. Due to the size of these compounds, hydrolysis is often required before P can be assimilated by organisms. Hydrolysis may be mediated by mineral surfaces, or catalyzed by extra cellular enzymes. LÄS MER