Search for dissertations about: "matrix completion"

Showing result 1 - 5 of 13 swedish dissertations containing the words matrix completion.

  2. 1. Rank Reduction with Convex Constraints

    Author : Christian Grussler; Institutionen för reglerteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-rank approximation; model reduction; non-convex optimization; Douglas-Rachford; matrix completion; overlapping norm; k-support norm; atomic norm;

    Abstract : This thesis addresses problems which require low-rank solutions under convex constraints. In particular, the focus lies on model reduction of positive systems, as well as finite dimensional optimization problems that are convex, apart from a low-rank constraint. READ MORE

  4. 2. Regulation of Renal Hyaluronan in Water Handling : Studies in vivo and in vitro

    Author : Sara Stridh; Peter Hansell; Mats Rundgren; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Kidney; water balance; fluid handling; diabetes; nephropathy; ACE fetopathy; reabsorption; hyaluronic acid; glycosaminoglycan; GAG; extracellular matrix; mTOR; rapamycin; streptozotocin;

    Abstract : Hyaluronan (HA) is a negatively charged extracellular matrix (ECM) component with water-attracting properties. It is the dominating ECM component in the renal medullary interstitium, where the amount changes in relation to hydration status: it increases during hydration and decreases during dehydration. READ MORE

  5. 3. On some sparsity related problems and the randomized Kaczmarz algorithm

    Author : Liang Dai; Kristiaan Pelckmans; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering with specialization in Signal Processing; Elektroteknik med inriktning mot signalbehandling;

    Abstract : This thesis studies several problems related to recovery and estimation. Specifically, these problems are about sparsity and low-rankness, and the randomized Kaczmarz algorithm. This thesis includes four papers referred to as Paper A, Paper B, Paper C, and Paper D. READ MORE

  6. 4. Empirical Essays in Public and Political Economics

    Author : Jonas Klarin; Eva Mörk; Luca Repetto; Francesco Sobbrio; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Abstract : Essay I: This paper proposes a novel approach to the issue of size, cost-efficiency and economies of scale by focusing on the break-up of municipalities. Municipal break-ups are an understudied phenomenon that nevertheless has been recurrent not only in parts of eastern Europe, but also in Spain and Sweden. READ MORE

  7. 5. Studies on genetic hemochromatosis and the hepatotoxicity of iron

    Author : Karin Hagen; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The aim of this study was to investigate the mutations and clinical expression of genetic hemochromatosis in patients and mechanisms involved in the hepatotoxicity of iron in animal and cell- culture models. In Swedish patients with a clinical diagnosis of genetic hemochromatosis, the C282Y mutation of the HFE gene was present in 94. READ MORE