Search for dissertations about: "multiple events"

Showing result 1 - 5 of 273 swedish dissertations containing the words multiple events.

  1. 1. Geochemical and sedimentary signatures of Phanerozoic events

    University dissertation from Department of Geology, Lund University

    Author : Jane Wigforss-Lange; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; geokemi; Sedimentology; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; Carbon and oxygen isotopes; Jurassic-Cretaceous boundary; K-T boundary; Late Silurian; Events; Trace elements; Sedimentologi;

    Abstract : Popular Abstract in Swedish Populärvetenskaplig sammanfattning Dramatiska händelser har inträffat regelbundet under jordens historia. Primära, kortvariga katastrofer som t ex asteroidnedslag, omfattande vulkanism eller kraftiga jordskalv kan ge långvariga miljöeffekter, som t ex global uppvärmning eller nedkylning, förändringar i havsnivå och cirkulationsmönster, syrefria oceanbottnar mm. READ MORE

  2. 2. Multiple Time Scales and Longitudinal Measurements in Event History Analysis

    University dissertation from Umeå : Statistik

    Author : Danardono; Umeå universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; Cox regression; multiple events; proportiona hazards; random effects; survival analysis; time-dependent covariates; time origin; Statistik; SOCIAL SCIENCES Statistics; computer and systems science Statistics; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap Statistik; Statistics; statistik;

    Abstract : A general time-to-event data analysis known as event history analysis is considered. The focus is on the analysis of time-to-event data using Cox's regression model when the time to the event may be measured from different origins giving several observable time scales and when longitudinal measurements are involved. READ MORE

  3. 3. Multiple Parton Interactions in Deep Inelastic ep-scattering at HERA

    University dissertation from Umeå : Statistik

    Author : Sakar Osman; Lunds universitet.; Lund University.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Jet Calibration; H1; Jets; Mini-jets; MPI; Low-x; Multiple; Dijets; Parton Dynamics; HERA; Fysicumarkivet A:2008:Osman;

    Abstract : The production of jets with low transverse momenta (mini-jets) in deep inelastic electron-proton scattering is studied. The analyses uses data taken with the H1 detector at HERA during the years 1999 to 2000. READ MORE

  4. 4. Environmental risk factors for multiple sclerosis

    University dissertation from Umeå : Umeå Universitet

    Author : Jonatan Salzer; Umeå universitet.; [2013]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Multiple sclerosis; risk factors in epidemiology; prospective; month of birth; vitamin D; vitamin A; C-reactive protein; hygiene hypothesis; smoking; cotinine; Epstein-Barr virus; epidemiologi; Epidemiology;

    Abstract : Background Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system. It usually strikes during young adulthood, and 2.5 million individuals are estimated to have the disease worldwide. READ MORE

  5. 5. Computational problems in evolution Multiple alignment, genome rearrangements, and tree reconstruction

    University dissertation from Stockholm : KTH

    Author : Isaac Elias; KTH.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Distance Methods; Tree reconstruction; Sorting by Transpositions; multiple alignment; ancestral sequences; TECHNOLOGY Information technology Computer science; TEKNIKVETENSKAP Informationsteknik Datavetenskap;

    Abstract : Reconstructing the evolutionary history of a set of species is a fundamental problem in biology. This thesis concerns computational problems that arise in different settings and stages of phylogenetic tree reconstruction, but also in other contexts. READ MORE