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Showing result 1 - 5 of 49 essays matching the above criteria.

1. 1. Self-Supervised Learning for Tabular Data: Analysing VIME and introducing Mix Encoder

   University essay from Lunds universitet/Fysiska institutionen

   Author : Max Svensson; [2024]
   Keywords : Machine Learning; Self-supervised learning; AI; Physics; Medicine; Physics and Astronomy;

   Abstract : We introduce Mix Encoder, a novel self-supervised learning framework for deep tabular data models based on Mixup [1]. Mix Encoder uses linear interpolations of samples with associated pretext tasks to form useful pre-trained representations. READ MORE

3. 2. Quality enhancement of time-resolved computed tomography scans with cycleGAN

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Johannes Stubbe; [2023]
   Keywords : carbon fibers; carbon fibres; microfibers; tomography; deep learning; cycleGAN; time-resolved tomography; Physics and Astronomy;

   Abstract : Time-resolved x-ray tomography enables us to dynamically and non-destructively study the interior of a specimen. The obtainable temporal resolution is limited by the x-ray flux and the desired spatial resolution. READ MORE

4. 3. SubKluster: Novel method to bin scaffolds from cereal genomes into subgenomes using substring frequency analysis

   University essay from Lunds universitet/Examensarbeten i bioinformatik

   Author : Victor Kalbskopf; [2023]
   Keywords : Biology and Life Sciences;

   Abstract : The genome of the Belinda variety of the hexaploid oat (Avena sativa) has recently been sequenced and assembled. This project aims to improve the assembly by clustering the thousands of scaffolds into their three ancestral subgenomes using Principle Component Analysis (PCA) of kmer and repeat-element frequencies. READ MORE

5. 4. 3D CFD Simulations of Hydrogen Engine Combustion

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Hao Liu; [2023]
   Keywords : Technology and Engineering;

   Abstract : With the trend of decarbonization, the transport sector is exploring possibilities of fossil fuel free solutions. Hydrogen can be a potential fuel for future engine applications. In this work, the concept of H2 HPDI is investigated, where a pilot diesel injection ignites the hydrogen jet. READ MORE

6. 5. Beyond Traditional Tomography: X-ray Multi-projection Imaging for Additive Manufacturing

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Maria Esther Vilar Alvarez; [2023]
   Keywords : X-ray tomography; X-ray multiprojection-imaging; deep learning; additive manufacturing; synchrotron radiation; Physics and Astronomy;

   Abstract : The main aim of this bachelor thesis is to push the limits of 3D X-ray imaging by studying the minimum number of projections required to retrieve high-quality reconstructions for additive manufacturing processes. This project first focuses on understanding how X-ray tomography works, by reconstructing additive manufacturing data already obtained (from PSI, TOMCAT beamline) using two standard reconstruction algorithms, GRIDREC and SIRT. READ MORE