Search for dissertations about: "random walks"
Showing result 1 - 5 of 30 swedish dissertations containing the words random walks.
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1. Critical Scaling in Particle Systems and Random Graphs
Abstract : The purpose of this thesis is to study the behavior of macro-systems through their micro-parameters. In particular, we are interested in finding critical scaling in various models.Paper I investigates the influence of discrete-time collisions on particle dynamics. READ MORE
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2. Random Geometry and Reinforced Jump Processes
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
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3. Studies in respondent-driven sampling : Directed networks, epidemics, and random walks
Abstract : Respondent-driven sampling (RDS) is a link-tracing sampling methodology especially suitable for sampling hidden populations. A clever sampling mechanism and inferential procedures that facilitate asymptotically unbiased population estimates has contributed to the rising popularity of the method. READ MORE
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4. On Directed Random Graphs and Greedy Walks on Point Processes
Abstract : This thesis consists of an introduction and five papers, of which two contribute to the theory of directed random graphs and three to the theory of greedy walks on point processes. We consider a directed random graph on a partially ordered vertex set, with an edge between any two comparable vertices present with probability p, independently of all other edges, and each edge is directed from the vertex with smaller label to the vertex with larger label. READ MORE
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5. Cover Times, Sign-dependent Random Walks, and Maxima
Abstract : .... READ MORE