Sökning: "population theory"
Visar resultat 1 - 5 av 416 avhandlingar innehållade orden population theory.
Sammanfattning : For the last thirty years or so, there has been a search underway for a theory that canaccommodate our intuitions in regard to moral duties to future generations. The object ofthis search has proved surprisingly elusive. The classical moral theories in the literature allhave perplexing implications in this area. LÄS MER
Sammanfattning : This thesis consists of four papers.In paper 1, we prove central limit theorems for Markov chains under (local) contraction conditions. As a corollary we obtain a central limit theorem for Markov chains associated with iterated function systems with contractive maps and place-dependent Dini-continuous probabilities. LÄS MER
Sammanfattning : A fundamental problem in multi agent systems is conflict resolution. A conflict occurs in general when the agents have to deal with inconsistent goals, such as a demand for shared resources. We investigate how a game theoretic approach may be a helpful and efficient tool in examining a class of conflicts in multi agent systems. LÄS MER
4. Inbreeding, Effective Population Sizes and Genetic Differentiation : A Mathematical Analysis of Structured Populations
Sammanfattning : This thesis consists of four papers on various aspects of inbreeding, effective population sizes and genetic differentiation in structured populations, that is, populations that consist of a number of subpopulations. Three of the papers concern age structured populations, where in the first paper we concentrate on calculating the variance effective population size (NeV) and how NeV depends on the time between measurements and the weighting scheme of age classes. LÄS MER
Sammanfattning : The doctoral thesis deals with the problems of (news) photographic representation in general, and is based on an empirical study ofVietnam War photography in four major Swedish daily newspapers. A more specific aim of the thesis is to investigate and ideologically evaluate the representational strategies of the press photographs. LÄS MER