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Showing result 1 - 5 of 215 essays matching the above criteria.

  1. 1. Effectiveness of Iterative Algorithms for Recovering Phase in the Presence of Noise for Coherent Diffractive Imaging

    University essay from Göteborgs universitet / Institutionen för fysik

    Author : Henry Wittler; [2023-11-29]
    Keywords : ;

    Abstract : Methods of coherent diffractive imaging (CDI) rely on iterative algorithms to reconstruct the complex exit-surface wave (ESW) of the object being imaged from the measured diffraction intensity only. In this thesis we investigate by simulation the artifacts on reconstruction when noise are present in the measurement. READ MORE

  3. 2. Labyrinth routes around the Middle Age Baltic Sea

    University essay from

    Author : Christina Fagerström; [2023-08-17]
    Keywords : The labyrinth-symbol; labyrinth monuments; Trojaborg; Jerusalem; Middle Age Catholic Europe; pilgrimages; the Baltic Sea; the Northern crusades; navigatio; mission; the mendicant friars; the Fourth Lateran Church Council; fish markets;

    Abstract : Stone labyrinths are archaeological monuments found predominantly in the Nordic countries around the Baltic Sea, some 500 specimens are noted in Sweden and Finland. The abundance of smaller stones has provided the building material for lasting monuments around the Baltic Sea, the Swedish west coast and Norway, Iceland, the Scilly islands in England, the Barents Sea and the White Sea’s shores and rivers. READ MORE

  4. 3. "I am the opposite of progress” – A discussion about Bauman’s Liquid Modernity through the lens of Yellowstone

    University essay from Göteborgs universitet / Institutionen för sociologi och arbetsvetenskap

    Author : Marianne Gabrielsson; [2023-07-06]
    Keywords : conservatism; liquid modernity; Bauman; Yellowstone; sociology through literature;

    Abstract : Purpose: The purpose is to problematize how to use conservatism as counterforce to Liquid Modernity by answering two research questions. - What critique against liquid modernity can be identified in Yellowstone? - How does Yellowstone articulate conservatism as counterforce against monetary interests and profit. READ MORE

  5. 4. Effects of Ultrafast Ionization in X-ray Coherent Diffraction Imaging

    University essay from KTH/Kemi

    Author : Arezu Sehati; [2023]
    Keywords : Coherent Diffraction Imaging; X-ray Free Electron Lasers; Refractive index; Core-shell nanoclusters; Rare-gas ionization; Koherent Diffraktionsavbildning; Röntgenfrielektronlaser; Brytningsindex; Core-shell-nanokluster; Ädelgasjonisering;

    Abstract : Koherent Diffraktionsavbildning med en intensiv röntgenpuls från en Frielektronlaser har möjliggjort strukturbestämning av isolerade nanopartiklar som inte går att studera med hjälp av konventionella metoder, så som elektronmikroskopi. En mycket kort pulslängd tillsammans med spridningssignalens beroende av objektets elektroniska struktur medför också möjligheten att studera inducerad ultrasnabb dynamik med denna teknik. READ MORE

  6. 5. Using Machine Learning to Optimize Near-Earth Object Sighting Data at the Golden Ears Observatory

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

    Author : Laura Murphy; [2023]
    Keywords : Near-Earth Object Detection; Machine Learning; Deep Learning; Visual Transformers;

    Abstract : This research project focuses on improving Near-Earth Object (NEO) detection using advanced machine learning techniques, particularly Vision Transformers (ViTs). The study addresses challenges such as noise, limited data, and class imbalance. READ MORE