Sökning: "Group 3"

Visar resultat 1 - 5 av 4665 avhandlingar innehållade orden Group 3.

  1. 1. Problemlösning i grupp : betydelsen av gruppstorlek, gruppsammansättning, gruppnorm och problemtyp för grupprodukt och individuell kunskapsbehållning

    Författare :Sture Sjödin; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Group problem solving; group size; group composition; group norm; problem type; group productivity;

    Sammanfattning : The purpose of this dissertation was to, from the point of view of interaction, study how the factors group size, group composition, group norm and problem type influenced group problem solving. Three classroom studies were performed in grades four and five of the Swedish nine-year compulsory school. LÄS MER

  3. 2. On the Picard Group of Integer Group Rings

    Författare :Ola Helenius; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Picard group; Grothendieck group; integer group ring; cyclic group; cyclotomic field; class group; Kummer´s lemma; semi-regular prime; Picard group;

    Sammanfattning : .... LÄS MER

  4. 3. The structure of epsilon-strongly group graded rings

    Författare :Daniel Lännström; Johan Öinert; Stefan Wagner; Patrik Lundström; Gene Abrams; Blekinge Tekniska Högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; group graded ring; Leavitt path algebra; partial crossedproduct; Cuntz-Pimsner ring; von Neumann regular ring; non-unital ring; Mathematics and applications; Matematik med tillämpningar;

    Sammanfattning : The development of a general theory of strongly group graded rings was initiated by Dade, Năstăsescu and Van Oystaeyen in the 1980s, and since then numerous structural results have been established.  In this thesis we develop a general theory of so-called (nearly) epsilon-strongly group graded rings which were recently introduced by Nystedt, Öinert and Pinedo and which generalize strongly group graded rings. LÄS MER

  5. 4. Effectiveness and process in experiential group learning : comparing a process-directive encounter group (PEG) and a self-directive study group (SSG)

    Författare :Anders Wendelheim; Siv Boalt-Boëthius; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Experiential group learning; group effectiveness; change skills; group awareness; action ability; process competence; Psychology; Psykologi;

    Sammanfattning : The present thesis examines experiential group learning phenomena. The aim of the empirical study was to evaluate the impacts of two experiential group learning conditions (Process-directive Encounter Group, PEG; Self-directive Study Group, SSG) on group processes and outcomes. LÄS MER

  7. 5. Studies towards a method for incorporation of 3'-deoxy-3'-C-methylenephosphonate linkages into oligonucleotides

    Författare :Anna Winqvist; Colin B. Reese; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic Chemistry; organisk kemi;

    Sammanfattning : Synthetic strategies towards 3’-deoxy-3’-C-methylenephosphinate building blocks were explored. The key transformations involved stereoselective hydroboration of 1-[2-O-(tert-butyldimethylsilyl-5-O-(4-methoxytrityl)-3-deoxy-3-C-methylene- ß -D-erythro-pentofuranosyl]uracil to give the corresponding 3’-deoxy-3’-C- hydroxymethyl derivative with ribo-configuration, as well as the further conversion into a precursor with a suitable leaving group, e. LÄS MER