Search for dissertations about: "Sampling Studies"

Showing result 1 - 5 of 728 swedish dissertations containing the words Sampling Studies.

2. 1. Techniques to Calculate Exact Inclusion Probabilities for Conditional Poisson Sampling and Pareto .pi.ps Sampling Designs

   Author : Nibia Aires; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; sampling theory; conditional Poisson sampling; Pareto pips sampling; order sampling; numerical integration; algorithms; sampling theory;

   Abstract : This thesis consists of five papers and treats two finite population sampling methods, viz. the Conditional Poisson and the Pareto .pi.ps sampling schemes. READ MORE

4. 2. Unequal Probability Sampling in Active Learning and Traffic Safety

   Author : Henrik Imberg; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; naturalistic driving; active learning; sampling weighing; optimal design; sequential sampling; probability sampling;

   Abstract : This thesis addresses a problem arising in large and expensive experiments where incomplete data come in abundance but statistical analyses require collection of additional information, which is costly. Out of practical and economical considerations, it is necessary to restrict the analysis to a subset of the original database, which inevitably will cause a loss of valuable information; thus, choosing this subset in a manner that captures as much of the available information as possible is essential. READ MORE

5. 3. Studies in respondent-driven sampling : Directed networks, epidemics, and random walks

   Author : Jens Malmros; Tom Britton; Fredrik Liljeros; Erik Volz; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematical Statistics; matematisk statistik;

   Abstract : Respondent-driven sampling (RDS) is a link-tracing sampling methodology especially suitable for sampling hidden populations. A clever sampling mechanism and inferential procedures that facilitate asymptotically unbiased population estimates has contributed to the rising popularity of the method. READ MORE

6. 4. Computational Studies of Protein-ligand Systems Using Enhanced Sampling Methods

   Author : Rongfeng Zou; Yaoquan Tu; Leif Eriksson; KTH; []
   Keywords : molecular dynamics; enhanced sampling; protein-ligand interactions; umbrella sampling; metadynamics; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

   Abstract : This thesis focuses on studies of protein-ligand systems using enhanced sampling methods. In chapter I, I give a brief introduction to the time-scale problem and some enhanced sampling methods. In chapter II, the basics of MD simulation are reviewed. READ MORE

7. 5. Non-Uniform Sampling in Statistical Signal Processing

   Author : Frida Eng; Fredrik Gustafsson; Paulo Ferreira; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; signal processing; sampling; stochastic analysis; frequency transform; Automatic control; Reglerteknik;

   Abstract : Non-uniform sampling comes natural in many applications, due to for example imperfect sensors, mismatched clocks or event-triggered phenomena. Examples can be found in automotive industry and data communication as well as medicine and astronomy. READ MORE