Results 1 to 10 of about 26,810,428 (304)

Quantum Fourier analysis. [PDF]

open access: yesProc Natl Acad Sci U S A, 2020
SignificanceClassical Fourier analysis, discovered over 200 years ago, remains a cornerstone in understanding almost every field of pure mathematics. Its applications in physics range from classical electromagnetism to the formulation of quantum theory.
Jaffe A, Jiang C, Liu Z, Ren Y, Wu J.
europepmc   +8 more sources

Pulse shape discrimination of CLYC, CLLBC and EJ-276 with SiPM readout [PDF]

open access: yesEPJ Web of Conferences, 2023
Solid state detectors for the detection of thermal and fast neutrons find widespread applications. They often operate in a high gamma-radiation field or are required to discriminate between gamma-radiation and neutrons.
Seitz Bjoern   +2 more
doaj   +1 more source

Clinical Gait Analysis: Characterizing Normal Gait and Pathological Deviations Due to Neurological Diseases

open access: yesSensors, 2023
This study addresses the characterization of normal gait and pathological deviations induced by neurological diseases, considering knee angular kinematics in the sagittal plane.
Lorenzo Hermez   +5 more
doaj   +1 more source

QUANTITATIVE ASPECTS OF THE CURRENT ECONOMIC CRISIS IN UKRAINE [PDF]

open access: yesAkademičnij Oglâd, 2021
The article attempts to quantify the main parameters that characterize the economic crisis in Ukraine. Historical and systemic approaches are used as a basis of research methodology.
Stanislav Yu. Berzon
doaj   +1 more source

A Review on The Relationship between Oil Prices and Stock Prices in Turkey: New Evidences from Fourier Approach

open access: yesEkonomi, Politika & Finans Araştırmaları Dergisi, 2021
Oil is one of the most important energy resources in production and consumption processes. Therefore, shocks from oil prices can affect many macroeconomic variables. One of these macroeconomic variables is stock prices, and it is important to investigate
Mehmet Songur
doaj   +1 more source

Fourier Analysis [PDF]

open access: yesGraduate Texts in Mathematics, 2019
S. Axler
openaire   +2 more sources

New approach for the determination of the characteristics of signals containing fluctuating harmonics [PDF]

open access: yesInternational Journal of Metrology and Quality Engineering, 2011
This paper describes a new approach for the analysis of signals containing fluctuating harmonics. It is based on the Fourier transform, using windowing to reduce the error arising from analysing the signal over a non integer number of signal periods and ...
Poletaeff A., Espel P.
doaj   +1 more source

Development of a fast fourier transform-based analytical method for COVID-19 diagnosis from chest X-ray images using GNU octave

open access: yesJournal 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
doaj   +1 more source

Krawtchouk transforms and convolutions

open access: yesBulletin 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
doaj   +1 more source

Propagation of shock wave of nitrogen gas in Titan stratosphere

open access: yesJournal of Taibah University for Science, 2021
Nitrogen gas is considered one of the significant standard gases in stratosphere of Titan, Saturn's largest moon, which represents almost 98.4% of Titan atmosphere chemical composites.
H. G. Abdelwahed, Abeer A. Mahmoud
doaj   +1 more source

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