Sökning: "semiparametric"

Visar resultat 16 - 19 av 19 avhandlingar innehållade ordet semiparametric.

  1. 16. Nutrient loads to the Baltic Sea

    Författare :Per Stålnacke; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : Nutrient enrichment is generally regarded as the greatest threat to the ecosystems of the Baltic Sea. This thesis demonstrates that the loads of nitrogen and phosphorus in the rivers in the Baltic Sea drainage basin are larger than previously assumed and by far exceed the size of the loads that reach the sea by way of other pathways, i.e. LÄS MER

  3. 17. Thyroid cancer : studies on etiology and prognosis

    Författare :Arne Hallquist; Lennart Hardell; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Thyroid cancer; prognostic factors; etiology; occupation; medical ionizing radiation; reproductive; and family factors;

    Sammanfattning : Thyroid cancer constitutes about 1% of all malignant tumours and the incidence is increasing in Sweden. It is rare in children before the age of 10. During puberty the female to male ratio increases to be two to three times more common in females. The ratio remains constant until menopause and thereafter declines. LÄS MER

  4. 18. Essays on Energy Demand and Household Energy Choice

    Författare :Amin Karimu; Runar Brännlund; Jonas Nordström; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Choice Probability; derivatives; energy policy; gasoline demand; propensity score; tax simulation; unobserved trend; nationalekonomi; Economics;

    Sammanfattning : This thesis consists of four self-contained papers related to energydemand and household cooking energy.Paper [I] examine the impact of price, income and non-economicfactors on gasoline demand using a structural time series model. LÄS MER

  5. 19. Essays on Time Series Analysis : With Applications to Financial Econometrics

    Författare :Daniel Preve; Rolf Larsson; Bent Nielsen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; non-Gaussian time series; nonnegative autoregression; robust estimation; strong convergence; realized volatility; volatility forecast; forecast comparison; Diebold-Mariano test; Statistics; Statistik;

    Sammanfattning : This doctoral thesis is comprised of four papers that all relate to the subject of Time Series Analysis.The first paper of the thesis considers point estimation in a nonnegative, hence non-Gaussian, AR(1) model. The parameter estimation is carried out using a type of extreme value estimators (EVEs). LÄS MER