Essays about: "Spectral decomposition method"

Showing result 6 - 10 of 15 essays containing the words Spectral decomposition method.

  1. 6. Comparative Analysis of Adaptive Domain Decomposition Algorithms for a Time-Spectral Method

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

    Author : Vilhelm Dinevik; [2020]
    Keywords : ;

    Abstract : Time-spectral solvers for partial differential equations (PDE) have been explored in various forms during the last few decades. The generalized weighted residual method (GWRM) is one such method with a high accuracy and efficiency. The GWRM has so far been implemented almost exclusively with a uniform grid of subdomains in the spatial domain. READ MORE

  3. 7. Image Processing using Graph Laplacian Operator

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

    Author : David Wobrock; [2019]
    Keywords : ;

    Abstract : The latest image processing methods are based on global data-dependent filters. These methods involve huge affinity matrices which cannot fit in memory and need to be approximated using spectral decomposition. READ MORE

  4. 8. Iodine Quantification Using Dual Energy Computed Tomography and applications in Brain Imaging

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Veronica Fransson; [2019]
    Keywords : Physics and Astronomy;

    Abstract : Purpose/Background Dual Energy Computed Tomography (DECT) have been clinically available for over ten years. Two such systems are currently used at Skane University Hospital (SUS) in Lund. By utilizing materials different attenuating properties at different energies, material decomposition and iodine quantification is possible. READ MORE

  5. 9. Koopman mode analysis of the side-by-side cylinder wake

    University essay from KTH/Mekanik

    Author : Jimmy Röjsel; [2017]
    Keywords : Bluff body; wake flow; Side-by-side cylinder wake; Flip-op instability; Modal analysis; Koopman operator; Koopman mode decomposition;

    Abstract : In many situations, fluid flows can exhibit a wide range of temporal and spatial phenomena. It has become common to extract physically important features, called modes, as a first step in the analysis of flows with high complexity. READ MORE

  6. 10. Detecting clear-cut deforestation using Landsat data : a time series analysis of remote sensing data in Covasna County, Romania between 2005 and 2015

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Tudor Buhalau; [2016]
    Keywords : Landsat; BFAST; Covasna; Physical Geography and Ecosystem Analysis; deforestation; time series; NDVI; NDMI; Earth and Environmental Sciences;

    Abstract : Forested areas represent a fundamental component of the environment. Deforestation and forest fragmentation represent a global issue mostly caused by human influence and Romania is not an exception. Nowadays forests cover approximately a third of Romania’s surface, meaning that the deforestation is a national issue. READ MORE