Sökning: "statistical coverage"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden statistical coverage.

1. 1. Supersymmetry vis-à-vis Observation : Dark Matter Constraints, Global Fits and Statistical Issues

   Författare :Yashar Akrami; Joakim Edsjö; Lars Bergström; Roberto Trotta; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; supersymmetry; cosmology of theories beyond the Standard Model; dark matter; gamma rays; dwarf galaxies; direct detection; statistical techniques; scanning algorithms; genetic algorithms; statistical coverage; Astroparticle physics; Astropartikelfysik; Cosmology; Kosmologi; Astroparticle physics; Astropartikelfysik; teoretisk fysik; Theoretical Physics;

   Sammanfattning : Weak-scale supersymmetry is one of the most favoured theories beyond the Standard Model of particle physics that elegantly solves various theoretical and observational problems in both particle physics and cosmology. In this thesis, I describe the theoretical foundations of supersymmetry, issues that it can address and concrete supersymmetric models that are widely used in phenomenological studies. LÄS MER

3. 2. Probabilistic treatment planning based on dose coverage : How to quantify and minimize the effects of geometric uncertainties in radiotherapy

   Författare :David Tilly; Anders Ahnesjö; Erik Grusell; Uwe Oelfke; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radiotherapy; treatment simulation; probabilistic planning; dose calculation; probabilistic optimization; statistical shape model; Medicinsk radiofysik; Medical Radiophysics;

   Sammanfattning : Traditionally, uncertainties are handled by expanding the irradiated volume to ensure target dose coverage to a certain probability. The uncertainties arise from e.g. the uncertainty in positioning of the patient at every fraction, organ motion and in defining the region of interests on the acquired images. LÄS MER

4. 3. Essays on spatial point processes and bioinformatics

   Författare :Jessica Fahlén; Patrik Rydén; Xavier de Luna; Yudi Pawitan; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coverage process; vacancy; microarray; pre-processing; sensitivity; bias; dye-normalization; FFPE; storage time effects; Statistics; Statistik; Statistics; statistik;

   Sammanfattning : This thesis consists of two separate parts. The first part consists of one paper and considers problems concerning spatial point processes and the second part includes three papers in the field of bioinformatics. LÄS MER

5. 4. Characterisation and Some Statistical Aspects of Univariate and Multivariate Generalised Pareto Distributions

   Författare :Nader Tajvidi; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; generalised Pareto distribution; multivariate extreme value theory; multivariate Pareto distribution; small sample properties; Bartlett s correction; maximum likelihood; statistical computations; simulation AMS 1991 subject classification: 62F11; 62E20; 60F17; 65U05; 62E20;

   Sammanfattning : Extreme value theory is about the distributions of very large or very small values in a time series or stochastic process. This has numerous applications connected with environmental science, civil engineering, materials science and insurance. LÄS MER

7. 5. Under the influence? Understanding media’s coverage of opinion polls and their effects on citizens and politicians

   Författare :Per Oleskog Tryggvason; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; opinion polls; public opinion; political coverage; political communication; mediatization; bandwagon effects;

   Sammanfattning : News media’s use of horse race polls is a defining feature of contemporary political reporting. This thesis investigates how the news media use these opinion polls and how this coverage can influence two of the most central actors in representative democracies: citizens and politicians. LÄS MER