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Improving snow removal plans through task reassignmentThomas, Erik January 2022 (has links)
The planning of snow removal routes is complicated by the fact that the amount it snows, and thus the amount of resources, that is, vehicles, needed to clear it, varies from year to year. This variation has created a demand for a way to quickly generate efficient snow removal plans that take the resources that are available into account. In this report we describe the development of an ad hoc heuristic algorithm that improves already existing feasible solutions to the snow removal problem. It accomplishes this by reassigning tasks from the vehicles with the longest tours to those with the shortest tours, followed by reordering their tasks to ensure that the solution remains feasible. This algorithm is meant to be implemented in a larger piece of software and it is tested on a set of pre-generated solutions for a given network and number of vehicles, including the best known ones. Over half of the previously best known solutions were improved by this algorithm.
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I began to be free : A study on two trans-active Finnish men / Jag började vara fri : En studie av två trans-aktiva finska mänVahlroos, Riikka January 2008 (has links)
<p>This study focuses on Finnish transmen and their life stories. It goes through the practical reality of the gender re-assignment process, but focuses on the personal experiences of two individual men. The study is based on in-depth interviews with informants, material which has been analyzed with the help of Judith Butler’s theory on gender.</p> / <p>Den här uppsatsen handlar om två finska transmän och deras livshistorier. Studien går igenom den praktiska realiteten av könskorrigeringsprocessen, men fokuserar på de personliga erfarenheterna av dessa två individuella män. Den är baserad på djupintervjuer med informanter, material som har analyserats med hjälp av Judith Butlers teori om genus.</p>
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I began to be free : A study on two trans-active Finnish men / Jag började vara fri : En studie av två trans-aktiva finska mänVahlroos, Riikka January 2008 (has links)
This study focuses on Finnish transmen and their life stories. It goes through the practical reality of the gender re-assignment process, but focuses on the personal experiences of two individual men. The study is based on in-depth interviews with informants, material which has been analyzed with the help of Judith Butler’s theory on gender. / Den här uppsatsen handlar om två finska transmän och deras livshistorier. Studien går igenom den praktiska realiteten av könskorrigeringsprocessen, men fokuserar på de personliga erfarenheterna av dessa två individuella män. Den är baserad på djupintervjuer med informanter, material som har analyserats med hjälp av Judith Butlers teori om genus.
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Audio editing in the time-frequency domain using the Gabor Wavelet TransformHammarqvist, Ulf January 2011 (has links)
Visualization, processing and editing of audio, directly on a time-frequency surface, is the scope of this thesis. More precisely the scalogram produced by a Gabor Wavelet transform is used, which is a powerful alternative to traditional techinques where the wave form is the main visual aid and editting is performed by parametric filters. Reconstruction properties, scalogram design and enhancements as well audio manipulation algorithms are investigated for this audio representation.The scalogram is designed to allow a flexible choice of time-frequency ratio, while maintaining high quality reconstruction. For this mean, the Loglet is used, which is observed to be the most suitable filter choice. Re-assignmentare tested, and a novel weighting function using partial derivatives of phase is proposed. An audio interpolation procedure is developed and shown to perform well in listening tests.The feasibility to use the transform coefficients directly for various purposes is investigated. It is concluded that Pitch shifts are hard to describe in the framework while noise thresh holding works well. A downsampling scheme is suggested that saves on operations and memory consumption as well as it speeds up real world implementations significantly. Finally, a Scalogram 'compression' procedure is developed, allowing the caching of an approximate scalogram.
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