Sökning: "four dimensions"

Visar resultat 1 - 5 av 616 avhandlingar innehållade orden four dimensions.

1. 1. Crystallography in Four Dimensions : Methods and Applications

   Författare :Gunilla Carlsson; Janos Hajdu; Dieter Oesterhelt; Vilmos Fülöp; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; horseradish peroxidase; redox reactions; X-ray crystallography; haem catalysis; molecular movies; radiation damage; Molekylär biofysik; Molecular biophysics; Molekylär biofysik;

   Sammanfattning : The four-electron reduction of dioxygen to water is the most exothermic non-photochemical reaction available to biology. A detailed molecular description of this reaction is needed to understand oxygen-based redox processes. Horseradish peroxidase (HRP) is a haem-containing redox enzyme capable of catalysing the reduction of dioxygen to water. LÄS MER

3. 2. Dimensions of validity : studies of the Swedish national tests in mathematics

   Författare :Anna Lind Pantzare; Christina Wikström; Per-Erik Lyrén; Gordon Stobart; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; national tests; validity; interrater reliability; standard setting; linking; subscores; test development; didactics of educational measurement; beteendevetenskapliga mätningar;

   Sammanfattning : The main purpose for the Swedish national tests was from the beginning to provide exemplary assessments in a subject and support teachers when interpreting the syllabus. Today, their main purpose is to provide an important basis for teachers when grading their students. LÄS MER

4. 3. Dimensions of Professionalism : A Study of Computer Science Teaching in Saudi Arabia

   Författare :Fayiq Alghamdi; Aletta Nylén; Arnold Pears; Erkki Sutinen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Datavetenskap med inriktning mot datavetenskapens didaktik; Computer Science with specialization in Computer Science Education Research;

   Sammanfattning : In Saudi Arabia, new computing education programs have been introduced in alignment with the Saudi Vision 2030, which is a plan launched in 2017 to reduce Saudi Arabia's reliance on oil, diversify its economy, and develop its health, education, recreation, infrastructure and tourism. Computer science is a rapidly changing area, which places high demands on teachers in the subject to develop both their subject and pedagogical competence. LÄS MER

5. 4. Maximally Supersymmetric Models in Four and Six Dimensions

   Författare :Fredrik Ohlsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Taub-NUT space; Flat connections; Topologically non-trivial connections; 0 theory; Maximal supersymmetry; 2; Circle fibrations; Yang-Mills theory;

   Sammanfattning : We consider two examples of maximally supersymmetric models; the N=4 Yang-Mills theory in four dimensions and the (2,0) theory in six dimensions. The first part of the thesis serves as an introduction to the topics covered in the appended research papers, and begins with a self-contained discussion of principal fibre bundles and symplectic geometry. LÄS MER

7. 5. Social action : Variations, dimensions and dilemmas

   Författare :Mohammadrafi Mahmoodian; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Sociologi; Sociology; Sociologi; Sociology; sociologi;

   Sammanfattning : This study focuses on several key dimensions and types of social action. It examines variousconceptions of action within sociology: in particular, Marx's labour, Durkheim's normativelyregulated action, Weber's typology of instrumentally rational, value-rational, affectual andtraditional action, as well as Goffman's dramaturgical and Habermas's communicative action. LÄS MER