Search for dissertations about: "Sampling design"
Showing result 1 - 5 of
340 swedish dissertations containing the words Sampling design.
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Author : Anton Grafström; Lennart Bondesson; Sara De Luna; Imbi Traat; Umeå universitet; []
Keywords : NATURVETENSKAP; NATURAL SCIENCES; conditional Poisson sampling; correlated Poisson sampling; entropy; extended Sampford sampling; Horvitz-Thompson estimator; inclusion probabilities; list-sequential sampling; non-rejective implementation; Pareto sampling; Poisson sampling; probability functions; ratio estimator; real-time sampling; repeated Poisson sampling; Sampford sampling; sampling designs; splitting method; unequal probability sampling; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;
Abstract :
The main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. When the units in the population do not have the same probability of being included in a sample, it is called unequal probability sampling. READ MORE
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Author : Edgar Bueno; Per Gösta Andersson; Maria Giovanna Ranalli; Stockholms universitet; []
Keywords : NATURVETENSKAP; NATURAL SCIENCES; GREG estimator; mixture distribution; probability proportional to size sampling; sampling algorithms; sampling design; sampling strategy; survey sampling; stratified sampling; Statistics; statistik;
Abstract :
Sampling is a core stage in every survey. A sampling design carefully elaborated may imply not only a more accurate estimation of the parameters of interest, but also a reduction in the required sample size in a study. In this thesis we consider two particular but connected subjects. READ MORE
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Author : Alex Nowitz; Rolf Hughes; Sten Sandell; Åse Tone; Stockholms konstnärliga högskola; []
Keywords : HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; Music; acousmatic and disembodied voice; æsthetics of uncertainty and in-between; composer-performer; contemporary vocal performance art; custom musical instrument DIY ; digital musical instrument DMI ; electronic and electroacoustic music; expanding the field of vocal performance art; extended vocal techniques; extending the voice; gesture-controlled live electronics; improvisation and real-time composition; inclusive vocal performance practises; interactive sound and music; multidirectional listening; multivocality; multivocal voice; new vocality; sampling practises for vocal and musical improvisation; schizophonic practices; sensor-based and computer-based technology; singer-composer; sound art; sound technology; STEIM; strophonion; vocal materiality and liminality; vocal personas; vocal sound dance; wireless technology; Performativa och mediala praktiker; Performative and media based practices; Degree of Doctor of Philosophy in Fine Arts in Performative and Media Based Practices with Specialisation in Opera; Degree of Doctor of Philosophy in Fine Arts in Performative and Media Based Practices with Specialisation in Opera;
Abstract :
Proposing a ‘multivocal practice’ in the vocal arts, this exposition (documented artistic research project) embodies an inclusive approach to four core categories for the contemporary performance voice: the singing, speaking, extended and disembodied voice. The culmination of a four-year PhD project in the Performative and mediated practices, with specializations in choreography/film and media/opera /performing arts, it documents artistic research sub-projects through the presentation of multimedia material, interweaving performance recordings with reflection and informative threads. READ MORE
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Author : Rune Nordqvist; Uppsala universitet; []
Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Sampling design; design robustness; D-optimality; groundwater models; parameter estimation; model discrimination; Geovetenskap; Earth sciences; Geovetenskap; Hydrology; hydrologi;
Abstract :
Model reliability is important when groundwater models are used for evaluation of environmental impact and water resource management. Model attributes such as geohydrologic units and parameter values need to be quantified in order to obtain reliable results. READ MORE
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Author : Anders Lundquist; Lennart Bondesson; Aleksandras Plikusas; Umeå universitet; []
Keywords : NATURVETENSKAP; NATURAL SCIENCES; balanced sampling; conditional Poisson sampling; inclusion probabilities; maximum entropy; Markov chain Monte Carlo; Pareto sampling; Sampford sampling; unequal probability sampling.; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;
Abstract :
This thesis consists of five papers related to the theory of unequal probability sampling from a finite population. Generally, it is assumed that we wish to make modelassisted inference, i.e. the inclusion probability for each unit in the population is prescribed before the sample is selected. READ MORE
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