Results 1 to 10 of about 1,251,037 (325)

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   +6 more sources

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

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

Extracted features of national and continental daily biweekly growth rates of confirmed COVID-19 cases and deaths via Fourier analysis

open access: yesMathematical Biosciences and Engineering, 2021
Aims: By associating features with orthonormal bases, we analyse the values of the extracted features for the daily biweekly growth rates of COVID-19 confirmed cases and deaths on national and continental levels.
Ray-Ming Chen
doaj   +1 more source

Analysis of Dynamic Response Characteristics for 5 MW Jacket-type Fixed Offshore Wind Turbine

open access: yes한국해양공학회지, 2021
This study aims to evaluate the dynamic responses of the jacket-type offshore wind turbine using FAST software (Fatigue, Aerodynamics, Structures, and Turbulence).
Jaewook Kim, Sanghwan Heo, WeonCheol Koo
doaj   +1 more source

Tutorial on Empirical Mode Decomposition: Basis Decomposition and Frequency Adaptive Graduation in Non-Stationary Time Series

open access: yesIEEE Access, 2023
This tutorial explores the class of non-parametric time series basis decomposition methods particularly suited for nonstationary time series known as Empirical Mode Decomposition (EMD). In outlining a statistical perspective of the EMD method, it will be
Cole van Jaarsveldt   +3 more
doaj   +1 more source

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

Application of Spatio-Temporal Spectral Analysis for Detection of Seismic Waves in Gravitational-Wave Interferometer

open access: yesGalaxies, 2021
Mixed spatio–temporal spectral analysis was applied for the detection of seismic waves passing through the west–end building of the Virgo interferometer.
Robert Szymko   +6 more
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

Dynamic impedance modeling of an alkaline electrolyzer for hydrogen production

open access: yesZhejiang 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
doaj   +1 more source

Home - About - Disclaimer - Privacy