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An Interplay between Gabor and Wilson Frames
Published 2013-01-01“…Also, sufficient conditions for a Wilson system to be a Wilson Bessel sequence are obtained. Under the assumption that the window functions w0 and w-1 for odd and even indices of j are the same, we obtain sufficient conditions for a Wilson system to be a Wilson frame (Wilson Bessel sequence). …”
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Synthesis of shared aperture thinned interleaved arrays with elements in concentric rings
Published 2023-02-01“…Among planar array antennas, concentric ring array (CRA) antennas have received considerable interest since it is symmetric and provides invariant beam pattern for 360° azimuthal coverage.In case of limited antenna aperture, there is great value to thinned interleaved CRA with low peak side lobe levels and a narrow main beam.The application of the cubic interpolation and density-weighting method in shared aperture array design was demonstrated by the low peak side lobe level synthesis of CRA.By adopting the Fourier-Bessel transform the relationship between the element’s excitation and array pattern, thinned interleaved problems were formulated as time-frequency synthesis problems.On the basis of the density-weighting method, element excitations of interleaved sub-array were carefully selected in an odd-even manner, which ensured the pattern matching of the generated sub-array.The iterative FFT algo rithm was adopted to thin the concentric ring array.Simulation results show that the proposed algorithm can achieve a favorable thinned and interleaved concentric ring array design with matched power patterns and low peak sidelobe levels.The problem of thinned and interleaved concentric ring arrays is solved, and the design of multi-function shared aperture thinned interleaved arrays with elements in concentric rings is realized.…”
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Postoperative Analgesic Effects of Quadratus Lumborum Block Versus Transversus Abdominis Plane Block in Pediatric Lower Abdominal Surgeries: A Systematic Review and Meta-Analysis
Published 2025-02-01“…Pooled mean difference (MD), standardized mean difference (SMD), and odds ratio (OR) were calculated by a random effect model using RevMan 5.4.Results: Nine studies met the pre-defined inclusion criteria. …”
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Against Futility Judgments for Patients with Prolonged Disorders of Consciousness
Published 2022-07-01“… [17] Quill, Timothy E., Christine K. Cassel, and Ann Intern Med. 1995. “Nonabandonment: A Central Obligation for Physicians.” …”
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Late Miocene Tapiridae from Vallès-Penedès Basin (NE Iberian Peninsula): taxonomic and paleoenvironmental implications
Published 2025-01-01“…In contrast, the occurrence of Tapirus is at odds with previous paleoenvironmental inferences for CCN20, which indicated a more open and arid environment, suggesting that the earliest Vallesian in this basin was characterized by more humid and forested conditions than previously assumed (in further agreement with the roughly coeval site of Castell de Barberà).…”
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