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Showing result 1 - 5 of 6 essays matching the above criteria.
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1. Subgrid finite volume preconditioner for Discontinuous Galerkin implemented in the DUNE framework
University essay from Lunds universitet/Matematik LTHAbstract : A Jacobian free multigrid preconditioner for linear problems arising from Implicit Discontinuous Galerkin (DG) discretizations is implemented. The preconditioner is based on a multigrid method for a low order Finite volume (FV) discretization on a subcellgrid. L2-projections are introduced as a strategy to translate between the discretizations. READ MORE
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2. Reconstruction of Hyperspectral Images Using Generative Adversarial Networks
University essay from Linköpings universitet/ReglerteknikAbstract : Fast detection and identification of unknown substances is an area of interest for many parties. Raman spectroscopy is a laser-based method allowing for long range no contact investigation of substances. READ MORE
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3. Computation of Stationary States for Rotating Bose-Einstein Condensates using Spectral Methods
University essay from KTH/Skolan för teknikvetenskap (SCI)Abstract : The Bose-Einstein condensate is a phase of matter that arises when cooling gases of bosons to extremely low temperatures. When studying these condensates one may use the Gross-Pitaevskii equation, which is a non-linear variant of the Schrödinger equation. READ MORE
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4. Analytical Investigation of Planetary Gears Instabilities and the Impact of Micro-Macro Geometry Modifications
University essay from KTH/Farkostteknik och SolidmekanikAbstract : Due to their large torque-speed ratio and transmission efficiency, planetary gears are widely used in the automotive industry. However, high amplitude vibrations remain their critical weakness, which limits their usage especially when new strict noise legislations come into action. READ MORE
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5. Blood Velocities Estimation using Ultrasound
University essay from Lunds universitet/Matematisk statistikAbstract : This thesis consists of two parts. In the rst part, the iterative data-adaptive BIAA spectral estimation technique was extended to estimate lateral blood velocities using ultrasound scanners. The BIAA method makes no assumption on samples depth or sampling pattern, and therefore allows for transmission in duplex mode imaging. READ MORE