Search for dissertations about: "random group"

Showing result 1 - 5 of 219 swedish dissertations containing the words random group.

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

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

    Abstract : 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. READ MORE

  4. 2. Random Geometry and Reinforced Jump Processes

    Author : Tuan-Minh Nguyen; Probability and Inference Theory Group; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; random polygons; products of random matrices; vertex-reinforced jump processes; pseudotrajectories; random walks in simplexes; Markov chains in a general state space;

    Abstract : This thesis comprises three papers studying several mathematical models related to geometric Markov processes and random processes with reinforcements. The main goal of these works is to investigate the dynamics as well as the limiting behaviour of the models as time goes to infinity, the existence of invariant measures and limiting distributions, the speed of convergence and other interesting relevant properties. READ MORE

  5. 3. Three applications of graph-theoretic methods

    Author : Dmitrii Zhelezov; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Product set; arithmetic progression; random orientations; percolation; square lattice; random group; commuting graph; diameter; arithmetic progression;

    Abstract : .... READ MORE

  6. 4. Limit Theorems for Ergodic Group Actions and Random Walks

    Author : Michael Björklund; Anders Karlsson; Yves Guivarc'h Irmar; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Abstract : This thesis consists of an introduction, a summary and 7 papers. The papers are devoted to problems in ergodic theory, equidistribution on compact manifolds and random walks on groups. In Papers A and B, we generalize two classical ergodic theorems for actions of abelian groups. READ MORE

  7. 5. Stochastic epidemics on random networks and competition in growth

    Author : Carolina Fransson; Pieter Trapman; Daniel Ahlberg; Julia Komjathy; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; random graphs; branching processes; SIR epidemics; malthusian parameter; urn model; matematisk statistik; Mathematical Statistics;

    Abstract : The COVID-19 pandemic has dramatically demonstrated the importance of epidemic models in understanding and predicting disease spread and in assessing the effectiveness of interventions. The overarching topic of this thesis is stochastic epidemic modelling, with the main focus on the role of the underlying social structure in infectious disease spread. READ MORE