Search for dissertations about: "Mixture Theory"

Showing result 16 - 20 of 134 swedish dissertations containing the words Mixture Theory.

  2. 16. Methods for longitudinal brain imaging studies with dropout

    Author : Tetiana Gorbach; Xavier de Luna; Anders Lundquist; Martin A. Lindquist; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Missing data; nonignorable dropout; sensitivity analysis; uncertainty intervals; pattern-mixture models; aging; cognition; MRI; brain structure; resting-state functional connectivity; Statistics; statistik;

    Abstract : One of the challenges in aging research is to understand the brain mechanisms that underlie cognitive development in older adults. Such aging processes are investigated in longitudinal studies, where the within-individual changes over time are observed. However, several methodological issues exist in longitudinal analyses. READ MORE

  4. 17. Spatio-Temporal Estimation for Mixture Models and Gaussian Markov Random Fields - Applications to Video Analysis and Environmental Modelling

    Author : Johan Lindström; Matematisk statistik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; vegetation; time series analysis; video segmentation; spatio-temporal modelling; precipitation; Markov chain Monte Carlo; Gaussian Markov random fields; expectation maximisation; change point detection; Bayesian recursive estimation; African Sahel; adaptive Gaussian mixtures;

    Abstract : In this thesis computationally intensive methods are used to estimate models and to make inference for large, spatio-temporal data sets. The thesis is divided into two parts: the first two papers are concerned with video analysis, while the last three papers model and investigate environmental data from the Sahel area in northern Africa. READ MORE

  5. 18. Unpacking Sanitation Planning Comparing Theory and Practice

    Author : Jennifer R Mc Conville; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Participation; Sustainability; Urban; Procedural planning theory; Decision-making; Sanitation; Process; Planning practice;

    Abstract : Lack of proper sanitation is linked to significant negative impacts on environmental and public health, economy, and human dignity. Despite the efforts made to reach the United Nations Millennium Development Goals, the world will miss its target of halving the percentage of people without access to improved sanitation by 2015; and there is general agreement within the field of sanitation that the sector has failed to deliver substantial improvements to the most needy. READ MORE

  6. 19. Macroscopic modelling of coupled multiphysics in swelling cellulose based materials

    Author : Marcus Alexandersson; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiphysics; multiphase flow; mixture theory; porous media; cellulose based materials; paperboard;

    Abstract : Paperboard has been the basis for packaging materials used to aseptically store and protect food and beverages for a long time. To ensure that there are no bacteria that can spoil the product, sterilizing treatments are made. READ MORE

  7. 20. Continuum modeling of the coupled transport of mass, energy, and momentum in paperboard

    Author : Henrik Askfelt; Hållfasthetslära; []
    Keywords : Paperboard; Mixture theory; Porous media; Large strains;

    Abstract : This thesis investigates the coupling between moisture, heat, and deformation in paperboard. The presented investigations are primarily conducted via macroscale continuum modeling but experimental characterisations are also made. READ MORE