Sökning: "Per Hansson KTH"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden Per Hansson KTH.

  1. 1. Technological knowledge and technology education

    Författare :Per Norström; Sven Ove Hansson; Per Sandin; Peter Kroes; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; philosophy of technology; epistemology of technology; technology education; technological knowledge; rule of thumb; explanation; Filosofi; Philosophy;

    Sammanfattning : Technological knowledge is of many different kinds, from experience-based know-how in the crafts to science-based knowledge in modern engineering. It is inherently oriented towards being useful in technological activities, such as manufacturing and engineering design. LÄS MER

  3. 2. Technology education and non-scientific technological knowledge

    Författare :Per Norström; Sven Ove Hansson; Per Sandin; Inga-Britt Skogh; Ibo van de Poel; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; rule of thumb; technical knowledge; technological knowledge; technology education; epistemology of technology; design process; modelling;

    Sammanfattning : This thesis consists of two essays and an introduction. The main theme is technological knowledge that is not based on the natural sciences.The first essay is about rules of thumb, which are simple instructions, used to guide actions toward a specific result, without need of advanced knowledge. LÄS MER

  4. 3. First determination of the electric charge of the top quark

    Författare :Per Hansson; Bengt Lund-Jensen; Peter Hansen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : In this thesis, the first determination of the electric charge of the top quark is presented using 370pb-1 of data recorded by the DØ detector at the Fermilab Tevatron accelerator. ttbar events are selected with one isolated electron or muon and at least four jets out of which two are b-tagged by reconstruction of a secondary decay vertex (SVT). LÄS MER

  5. 4. Control of weldability : Research leading to the development of two new quenched and tempered tool steels

    Författare :Per Hansson; Hannerz Nils Erik; Torsten Eriksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The understanding of the hardenability is important in steel development with respect to weldability of steels as well as to the design of quenched and tempered steels.The common way to judge if steel is suitability to welding is the use of a carbon equivalent, which reflects the alloy content to the hardenability of the heat affected zone (HAZ). LÄS MER

  7. 5. First Determination of the Electric Charge of the Top Quark and Studies of the Top Quark Pair Background to New Physics

    Författare :Per Hansson; Bengt Lund-Jensen; Jorgen D'Hondt; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; experimental particle physics; particle physics; standard model tests; dzero; fermilab; tevatron; top quark; top physics; electric charge; atlas; cern; lhc; large hadron collider; supersymmetry; Elementary particle physics; Elementarpartikelfysik; Physics; Fysik;

    Sammanfattning : This thesis is concerned with experimental investigations of properties of the top quark and processes involving this particle. In the first part of the thesis, the first determination of the electric charge of the top quark is presented. LÄS MER