Search for dissertations about: "Jonas Hallgren"

Found 3 swedish dissertations containing the words Jonas Hallgren.

2. 1. Continuous time Graphical Models and Decomposition Sampling

   Author : Jonas Hallgren; Timo Koski; Blazej Miasojedow; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Two topics in temporal graphical probabilistic models are studied. The topics are treated in separate papers, both with applications in finance. The first paper study inference in dynamic Bayesian networks using Monte Carlo methods. A new method for sampling random variables is proposed. READ MORE

4. 2. Inference in Temporal Graphical Models

   Author : Jonas Hallgren; Timo Koski; Dubhashi Devdatt; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

   Abstract : This thesis develops mathematical tools used to model and forecast different economic phenomena. The primary starting point is the temporal graphical model. Four main topics, all with applications in finance, are studied. READ MORE

5. 3. Effect of swirling blade on flow pattern in nozzle for up-hill teeming

   Author : Line Hallgren; Pär Jönsson; Jonas Alexis; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirling flow; up-hill teeming; nozzle; casting; fluid flow; modelling; CFD; LDA.; Metallurgical process engineering; Metallurgisk processteknik;

   Abstract : The fluid flow in the mold during up-hill teeming is of great importance for the quality of the cast ingot and therefore the quality of the final steel products. At the early stage of the filling of an up-hill teeming mold, liquid steel enters, with high velocity, from the runner into the mold and the turbulence on the meniscus could lead to entrainment of mold flux. READ MORE