Sökning: "causal models"

Visar resultat 31 - 35 av 162 avhandlingar innehållade orden causal models.

  1. 31. Modelling Stiffness and Damping by Use of Fractional Calculus with Application to Railpads

    Författare :Åsa Fenander; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stiffness; initial conditions; modal synthesis; time integration; measurements; fractional calculus; railway tracks; fractional integrals; damping; railpads; structural dynamics; fractional derivatives; mathematical models;

    Sammanfattning : When studying the dynamic behaviour of a structure, e g a railway track, it is important for the analyst to model both stiffness and damping accurately. Mathematical models including fractional derivatives have been found to work well for many materials. Such models are linear and causal. LÄS MER

  3. 32. Hypothalamic and Metabolic Dysfunction in Genetic Models of Huntington’s Disease

    Författare :Rana Soylu Kucharz; Translationell neuroendokrinologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Huntington’s Disease; Huntingtin; Hypothalamus; Metabolism; Obesity; orexin; PVN; BAT; TH; neuroendocrinology;

    Sammanfattning : Huntington’s disease (HD) is caused by a CAG trinucleotide repeat expansion in the huntingtin (HTT) gene. HD is an inherited progressive neurodegenerative disorder manifested by the wide array of motor dysfunctions, as well as non-motor symptoms. LÄS MER

  4. 33. Mind & Well-being : The relationships between personality and health related pathology

    Författare :Markus J. T. de Ruijter; Helgi B. Schiöth; Gull Rukh; Hui Xin Wang; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; personality; epidemiology; cardiovascular disease; well-being; job satisfaction; autism spectrum disorder; animal models;

    Sammanfattning : The study of the associations between personality, lifestyle and health related pathology has revealed important associations. These include associations with physical health such as the onset of cardiovascular disease, but also with mental and emotional health such as depression or life satisfaction. LÄS MER

  5. 34. Estimation of hazard ratios from observational data with applications related to stroke

    Författare :Guilherme Barros; Jenny Häggström; Marie Eriksson; Daniel Nevo; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; survival analysis; causal inference; hazard ratios; marginal hazard ratio; stroke; balancing; Statistics; statistik;

    Sammanfattning : The objective of this thesis is to examine some challenges that may emerge when conducting time-to-event studies based on observational data. Time-to-event (also called survival) is a setting that involves analyzing how different factors may influence the length of time until an individual experiences the event of interest. LÄS MER

  7. 35. Decomposing the Option Pricing Problem : Estimating the Causal Factors: Interest Rates, Dividends, and Risk-Neutral Probabilities

    Författare :Pontus Söderbäck; Jörgen Blomvall; Martin Singull; Stein-Erik Fleten; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : The financial markets have an essential role in society. Further, these markets are constantly evolving. Therefore, models and methods have to be developed and adapted to the new market conditions to be useful for decisions. LÄS MER