Search for dissertations about: "divergence times"

Showing result 6 - 10 of 33 swedish dissertations containing the words divergence times.

  2. 6. Rough starts and tough times : geographies of workers and firms in transition

    Author : Therese Danley; Rikard Eriksson; Urban Lindgren; Emma Lundholm; Neil Lee; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; agglomerations; job matching; human capital; plant closure; firm survival;

    Abstract : Economic change can lead to multiple and sometimes conflicting outcomes for workers, employers, and regions. At the center of economic change are the dynamic interactions among diverse workers and firms in specific labor market contexts. READ MORE

  4. 7. Semi Markov chain Monte Carlo

    Author : Håkan Ljung; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Adaptive simulation; error-in-the-variables; Kullback-Leibler divergence; Markov chain simulation; Markov chain Monte Carlo; semi-regenerative; MATEMATIK; MATHEMATICS; MATEMATIK; matematisk statistik; Mathematical Statistics;

    Abstract : The first paper introduces a new simulation technique, called semi Markov chain Monte Carlo, suitable for estimating the expectation of a fixed function over a distribution π, Eπf(χ). Given a Markov chain with stationary distribution p, for example a Markov chain corresponding to a Markov chain Monte Carlo algorithm, an embedded Markov renewal process is used to divide the trajectory into different parts. READ MORE

  5. 8. Human demographic history : Insights on the human past based on genomes from Southern through Central Africa

    Author : Gwenna Breton; Mattias Jakobsson; Carina Schlebusch; Per Sjödin; Paul Verdu; David Comas; Uppsala universitet; []
    Keywords : high-coverage genomes; Sub-Saharan Africa; demography; genetic admixture; population genetics; human evolutionary genetics; Khoe-San; rainforest hunter-gatherers; Biology with Specialisation in Human Evolution and Genetics; Biologi med inriktning mot människans evolution och genetik;

    Abstract : Evidence from paleontology, archaeology and population genetics support that modern humans originated in Africa. While the out-of-Africa event and subsequent colonization of all continents are well documented, human history in Africa at that time and before is less studied. READ MORE

  6. 9. Evolution of Lycopodiaceae (Lycopsida) : Relationships and Patterns of Diversification

    Author : Niklas Wikström; Anders Tehler; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; systematisk botanik; Systematic Botany;

    Abstract : A series of phylogenetic analyses using nucleotide sequence data resolves many aspects of the relationships in a group of land plants that until now have received comparatively little attention, the homosporous lycopsids or Lycopodiaceae. Although the group has evolved as an isolated lineage ever since the Late Devonian (more than 470 Myr ago), little is known about how modern species diversity relate to this ancient history. READ MORE

  7. 10. Genomic Diversity and Evolution of Parasitism in Nematode-trapping Fungi

    Author : Dag Ahrén; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; nematode-trapping fungi; expressed sequence tags; functional genomics; bioinformatics; parasitism; Genomic diversity; Evolution; Ekologi; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Abstract : Nematode-trapping fungi are soil-living organisms that have the ability to form infection structures, traps to capture nematodes. Many nematode species are parasites on plants and animals, which have resulted in an interest to use the nematode-trapping fungi as biological control agents. READ MORE