Sökning: "teknisk system"

Visar resultat 1 - 5 av 762 avhandlingar innehållade orden teknisk system.

  1. 1. Enhancing UV-protection of clear coated wood by utilizing reactive UV-absorber and epoxyfunctionalized soybean oil

    Författare :Sara Olsson; Mats KG Johansson; Emma Östmark; Mats Westin; Philip Evans; Minna Hakkarainen; Peter Weissenborn; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; UV-protaction; wood; clear coating; UV absorber; epoxy functionalized soybean oil; grafting;

    Sammanfattning : This work presents the development of a new pretreatment for clear coated wood, that aims to increase the photoprotection of exterior wood products, and at the same time make the system more environmentally friendly. The pretreatment comprises the reactive UV absorber 2-hydroxy-4(2,3-epoxy­propoxy)-benzophenone (HEPBP), which has a primary epoxy group that can be covalently attached to the hydroxyl groups of the wood substrate. LÄS MER

  3. 2. Double Poling Incross-Country Skiing : Biomechanical and Physiological Analysis of Sitting and Standing Positions

    Författare :Marie Lund Ohlsson; Marko Laaksonen; Jonas Danvind; L. Joakim Holmberg; Anders Eriksson; Mittuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; blood lactate concentration; cross-country sit-skiing; impairment; internal kinetics; inverse dynamics simulations; joint reaction forces; kinematics; metabolic rate; musculoskeletal modelling; musculoskeletal efficiency; nordic skiing; oxygen uptake; para-skiing; respiration; skiing efficiency.;

    Sammanfattning : Double poling (DP) is a sub-technique in cross-country skiing that has increased in interest over the last decades, e.g. athletes in cross-country skiing have increased their utilisation of double poling during competitions. LÄS MER

  4. 3. Combined Digital Holography and Speckle Correlation for Rapid Shape Evaluation

    Författare :Davood Khodadad; Anna Runnemalm; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik; Maskinteknik;

    Sammanfattning : In manufacturing industry there is a high demand for on line quality control to minimize the risk of incorrectly produced objects. Conventional contact measurement methods are usually slow and invasive, meaning that they cannot be used for soft materials and for complex shapes without influencing thecontrolled parts. LÄS MER

  5. 4. Att urskilja tekniska system : didaktiska dimensioner i grundskolan

    Författare :Maria Svensson; Jan-Erik Hagberg; Ann Zetterqvist; Åke Ingerman; Berit Bungum; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Technological systems; pedagogical possibilities; technological literacy; critical aspects; phenomenography; Tekniska system; ämnesdidaktik; teknisk bildning; kritiska aspekter; fenomenografi; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Teknikdidaktik; tekniska system; teknisk bildning; fenomenografi; kritiska aspekter;

    Sammanfattning : Syftet med avhandlingen är att bidra till den ämnesdidaktiska kunskapsbasen för undervisning och lärande om tekniska system i grundskolan. Dagens teknikkomplexa samhälle är uppbyggt av system som vi människor interagerar med. Informations-, energi- och kommunikationssystem är exempel på tekniska system som vi kommer i kontakt med dagligen. LÄS MER

  7. 5. Intelligent System Designs : Data-driven Sensor Calibration & Smart Meter Privacy

    Författare :Yang You; Tobias J. Oechtering; Olga Fink; KTH; []
    Nyckelord :Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Nowadays, the intelligent system has gained high popularity in successful implementation of real-time tasks due to its capability of providing efficient and powerful decision making in real applications. In this thesis, we aim for exploring and exploiting different concepts or methods to handle different tasks towards the intelligent system design. LÄS MER