Results 21 to 30 of about 22,685,320 (370)
FREQUENCY ANALYSIS OF DELTA SCUTI VARIABLE STARS. I.
Odessa Astronomical Publications, 2017 The Fourier analyses are performed for photoelectric observations of two δ Scuti stars V567 Oph and KU Cen. It is shown that V567 Oph is a multiperiodic star and KU Cen has one main period.
V. P. Bezdenezhnyi
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Krawtchouk transforms and convolutions
Bulletin of Mathematical Sciences, 2020 We present an operator calculus based on Krawtchouk polynomials, including Krawtchouk transforms and corresponding convolution structure which provides an inherently discrete alternative to Fourier analysis.
Philip Feinsilver, René Schott
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On the use of windows for harmonic analysis with the discrete Fourier transform
Proceedings of the IEEE, 1978 This paper makes available a concise review of data windows and their affect on the detection of harmonic signals in the presence of broad-band noise, and in the presence of nearby strong harmonic interference.
F. Harris
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Fusion bialgebras and Fourier analysis [PDF]
Advances in Mathematics, 2021 We introduce fusion bialgebras and their duals and systematically study their Fourier analysis. As an application, we discover new efficient analytic obstructions on the unitary categorification of fusion rings. We prove the Hausdorff-Young inequality, uncertainty principles for fusion bialgebras and their duals. We show that the Schur product property,
Jinsong Wu +2 more
openaire +3 more sources
Peak Fitting Applied to Fourier Transform Infrared and Raman Spectroscopic Analysis of Proteins
Applied Sciences, 2020 FTIR and Raman spectroscopy are often used to investigate the secondary structure of proteins. Focus is then often laid on the different features that can be distinguished in the Amide I band (1600–1700 cm−1) and, to a lesser extent, the Amide II band ...
A. Sadat, I. Joye
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Spectral analysis and the death of value investing
Cogent Economics & Finance, 2021 This study explores the redundancy of the value premium by conducting a Fourier analysis. The results illustrate periodicity in the value premium and merges the Adaptive Market Hypothesis with the Efficient Market hypothesis.
John-Morgan Bezuidenhout +1 more
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Uncertainty Principles for the Fourier and the Short-Time Fourier Transforms [PDF]
J. Math. Phys. 62(11): Paper No. 113501, 9 pp. (2021), 2020 The aim of this paper is to establish a few uncertainty principles for the Fourier and the short-time Fourier transforms. Also, we discuss an analogue of Donoho--Stark uncertainty principle and provide some estimates for the size of the essential support of the short-time Fourier transform.
arxiv +1 more source
Journal of Medical Physics, 2022 Purpose: Many artificial intelligence-based computational procedures are developed to diagnose COVID-19 infection from chest X-ray (CXR) images, as diagnosis by CXR imaging is less time consuming and economically cheap compared to other detection ...
Durjoy Majumder
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Dynamic impedance modeling of an alkaline electrolyzer for hydrogen production
Zhejiang dianli, 2023 Modeling of the hydrogen production systerm is of great significance to energy consumption reduction and the study of the interaction characteristics of different flows in integrated energy systems.
ZHANG Hanbing +6 more
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Ophthalmic Bioengineering. Review
Oftalʹmologiâ, 2023 This article published the materials of the round table “Bioengineering in ophthalmology” (OphthalmicBioengineering), held on May 13, 2021 as part of the international conference Ural Symposium on Biomedical Engineering, Radioelectronics and Information ...
V. O. Ponomarev +11 more
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