Search for dissertations about: "Anders T Johansson"
Found 3 swedish dissertations containing the words Anders T Johansson.
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1. Optimal and Hereditarily Optimal Realizations of Metric Spaces
Abstract : This PhD thesis, consisting of an introduction, four papers, and some supplementary results, studies the problem of finding an optimal realization of a given finite metric space: a weighted graph which preserves the metric's distances and has minimal total edge weight. This problem is known to be NP-hard, and solutions are not necessarily unique. READ MORE
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2. Sex differences in immune response and sex hormone receptor expression in healthy individuals and during viral infection
Abstract : There is sex-bias in morbidity and mortality from infectious diseases. Infections kill more men than women and several studies have pointed out differences in the immune system as a reason. The sex hormones estrogen, progesterone and testosterone all shape the effect of the immune response on multiple levels. READ MORE
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3. Analyses of shotcrete stress states due to varying lining thickness and irregular rock surfaces
Abstract : Shotcrete is sprayed concrete applied pneumatically under high pressure and was invented in the beginning of the 1900's. This new technique decreased the construction time and since steel fibres were introduced in the shotcrete during the 1970's, shotcrete has been the primary support method for tunnels. READ MORE