Results 21 to 30 of about 167,061 (255)

ON THE SUMMABILITY OF THE DISCRETE HILBERT TRANSFORM

open access: yesUral Mathematical Journal, 2018
In this paper, we study the asymptotic behavior of the distribution function of the discrete Hilbert transform of  sequences from the class \(l_{1} \) and find a necessary condition and a sufficient condition for the summability of the discrete Hilbert ...
Rashid A. Aliev, Aynur F. Amrahova
doaj   +1 more source

Alternating Sunspot Area and Hilbert Transform Analysis [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
We investigate the sunspot area data spanning from solar cycles 1 (March 1755) to 23 (December 2010) in time domain. For this purpose, we employ the Hilbert transform analysis method, which is used in the field of information theory.
Bang-Yeop Kim, Heon-Young Chang
doaj   +1 more source

Generalized multidimensional Hilbert transforms in Clifford analysis

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Two specific generalizations of the multidimensional Hilbert transform in Clifford analysis are constructed. It is shown that though in each of these generalizations some traditional properties of the Hilbert transform are inevitably lost, new bounded ...
Fred Brackx   +2 more
doaj   +1 more source

Critical Assessment Of The Issues In The Application Of Hilbert Transform To Compute The Logarithmic Decrement

open access: yesArchives of Metallurgy and Materials, 2015
The parametric OMI (Optimization in Multiple Intervals), the Yoshida-Magalas (YM) and a novel Hilbert-twin (H-twin) methods are advocated for computing the logarithmic decrement in the field of internal friction and mechanical spectroscopy of solids.
Majewski M., Magalas L.B.
doaj   +1 more source

SPECTRAL ESTIMATION OF TIME SERIES

open access: yesСовременная наука и инновации, 2022
As a result of spectral analysis, namely, the fast Fourier transform (FFT) method, the wavelet transform method, the Hilbert-Huang transform method, certain periods of the time series representing the monthly average values of the sunspot numbers were ...
L. N. Dzhimbeeva   +5 more
doaj   +1 more source

Numerical Hilbert Transform Algorithm for Causal Interpolation of Functions Represented by Cubic and Exponential Splines

open access: yesIEEE Access, 2021
This paper presents an algorithm for numerical Hilbert transform of functions represented by cubic and exponential splines, which is suitable for causal interpolation of data spanning several frequency decades. It does not suffer from excessive number of
Dusan N. Grujic
doaj   +1 more source

Extended Hilbert Transform and Application for Seismic Attributes

open access: yesEarth and Space Science, 2019
The Hilbert transform (HT) has been widely used in seismic data processing and interpretation. However, HT results exhibit lower noise robustness and resolution.
Gulan Zhang   +5 more
doaj   +1 more source

An Algorithm for Recognition of Fault Conditions in the Utility Grid with Renewable Energy Penetration

open access: yesEnergies, 2020
Penetration level of renewable energy (RE) in the utility grid is continuously increasing to minimize the environmental concerns, risk of energy security, and depletion of fossil fuels.
Govind Sahay Yogee   +6 more
doaj   +1 more source

Fuzzy Hilbert Transform of Fuzzy Functions

open access: yesMathematics
This paper studies the properties of the Fourier transform of the fuzzy function, and extends the classical Poisson integral formula on the half plane to the fuzzy case, obtaining the composition of the fuzzy set generated by a point in the complex field
Zhibo Yan
doaj   +1 more source

Fault Identification in Membrane Structures Using the Hilbert Transforms

open access: yesSensors, 2022
Fault diagnostics present a crucial technical issue in the areas of both the condition monitoring of machines and the monitoring of structural health. The identification of faults at an early stage in their development has an immense effect on the safety
Aleksandra Waszczuk-Młyńska   +2 more
doaj   +1 more source

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