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Showing result 1 - 5 of 21 essays matching the above criteria.

  1. 1. Nanoscale characterisation of model Ni-Mo catalyst active phases

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Jonas Elmroth Nordlander; [2022]
    Keywords : Ni-Mo catalysts; Hydrodeoxygenation; TEM; PXRD; Materials chemistry; Chemistry;

    Abstract : An important stepping stone in transitioning from a fossil-fuel based transportation system is the production of bio-fuels such as bio-oils. For bio-oils to be commercially viable, catalytic upgrading via hydrodeoxygenation is required, typically using Ni-Mo oxide or sulfide catalysts. READ MORE

  3. 2. Viewership forecast on a Twitch broadcast : Using machine learning to predict viewers on sponsored Twitch streams

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Jonas Malm; Martin Friberg; [2022]
    Keywords : twitch; viewership; prediction; regression; machine learning; XGBoost; streaming; distance metrics; feature selection; cross-validation; feature engineering; pre-processing;

    Abstract : Today, the video game industry is larger than the sports and film industries combined, and the largest streaming platform Twitch with an average of 2.8 million concurrent viewers offers the possibility for gaming and non-gaming brands to market their products. READ MORE

  4. 3. Designing k-Space Filters to Improve Spatiotemporal Resolution with Sector-Wise Golden Angle (SWIG)

    University essay from KTH/Medicinteknik och hälsosystem

    Author : Jonas Ström Seez; [2022]
    Keywords : Cardiovascular Magnetic Resonance Imaging CMR ; k-Space Filter; Sector Wise Golden-angle SWIG ; Kardiovaskulär Magnetisk Resonans Tomografi CMR ; k-rumsfilter; Sektorsvis Gyllene Vinkel SWIG ;

    Abstract : The aim of this thesis is to design and evaluate k-space weighting filters for simultaneously improving the spatial and temporal resolution of cardiovascular MRI, with the ultimate goal of improving the accuracy of quantitative flow measurements, which are important for diagnosis and follow-up of heart dysfunction. Two different k-space filters were implemented and evaluated retrospectively to already acquired data. READ MORE

  5. 4. Query By Example Keyword Spotting

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jonas Sunde Valfridsson; [2021]
    Keywords : Keyword Spotting; Automatic Speech Recognition; ASR; Query By Example; Deep Distance Learning; Dynamic Time Warping; Few- Shot Learning; Nyckelords igenkänning; automatisk taligenkänning; fåförsöksinlärning;

    Abstract : Voice user interfaces have been growing in popularity and with them an interest for open vocabulary keyword spotting. In this thesis we focus on one particular approach to open vocabulary keyword spotting, query by example keyword spotting. READ MORE

  6. 5. Counting Double-Descents and Double-Inversions in Permutations

    University essay from Mälardalens högskola/Akademin för utbildning, kultur och kommunikation

    Author : Jonas Boberg; [2021]
    Keywords : Combinatorics; Permutations; Permutation Statistics; Descent; Inversion;

    Abstract : In this paper, new variations of some well-known permutation statistics are introduced and studied. Firstly, a double-descent of a permutation π is defined as a position i where πi ≥ 2πi+1. By proofs by induction and direct proofs, recursive and explicit expressions for the number of n-permutations with k double-descents are presented. READ MORE