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7,311 papers
A BEMD-Based Quaternion Filtering Approach Sharp-to-Soft Kernel CT Image Conversion
Mahmoud Nasr, Jan K. Argasinski, Krzysztof Brzostowski +1
The quality of computed tomography (CT) images is significantly affected by the selection of reconstruction kernels: sharp kernels improve spatial resolution but increase noise, wh…
Decomposition-Guided Curvelet Thresholding for Sharp-to-Soft CT Kernel Conversion
Mahmoud Nasr, Jan K. Argasinski, Krzysztof Brzostowski +1
Image denoising is a crucial task in image processing, focused on improving image quality by minimizing noise while maintaining essential structural elements. This study presents a…
Iterative Single-Loop Coordination of Transmission and Distribution Systems and DER Aggregators with Limited Information Sharing
Robert Sosnowski, Yury Dvorkin, Marcin Baszynski +1
The growing integration of DERs underscores the importance of unified coordination across TSO, DSO, and aggregator levels. This paper proposes a coordination method between TSO, DS…
Linking Speakers of the German Parliament to Wikidata: Scope and Coverage of Metadata
Thomas Haider, Arne Cypionka, Maximilian Teich
This paper links all individuals who spoke in the German Bundestag between 1949 and 2021 to Wikidata, creating a longitudinal dataset that connects parliamentary speech transcripts…
Common Excitation Patterns of Star Formation, Active Galactic Nuclei, and Shocks in Seyfert Galaxies
Peixin Zhu, Lisa J. Kewley, Dominika Ł. Król +6
The growth of galaxies and their central supermassive black holes is closely connected, yet the net effect of active galactic nuclei (AGN) feedback on host-galaxy star formation re…
Minimal null control time of some 1D linear hyperbolic balance laws with constant coefficients and properties of related kernel equations
Long Hu, Guillaume Olive
In this work, we study the null controllability by one-sided boundary controls of one-dimensional hyperbolic balance laws with constant coefficients. Our first result shows that, w…