Results 11 to 20 of about 90,794 (290)

Wavelet packet analysis for rotor bar breakage in an inverter induction motor

open access: yesElectrical engineering & Electromechanics, 2023
Introduction. In various industrial processes, squirrel cage induction motors are widely employed. These motors can be used in harsh situations, such as non-ventilated spaces, due to their high strength and longevity.
O. Z. I. Abu Ibaid   +5 more
doaj   +1 more source

Time-frequency analysis of HD 174936 and HD 174966 using the synchrosqueezed wavelet transform

open access: yesFrontiers in Astronomy and Space Sciences, 2022
δ Scuti stars are intermediate-mass pulsators located in the classical Cepheid instability strip with spectral types ranging from A to F. In the last years, some authors found an amplitude and frequency modulation in some of these stars.
A. Ramón-Ballesta   +2 more
doaj   +1 more source

Inversion of the Dual Dunkl-Sonine Transform on R Using Dunkl Wavelets [PDF]

open access: yes, 2009
We prove a Calder\'on reproducing formula for the Dunkl continuous wavelet transform on $\mathbb{R}$.
Mourou, Mohamed Ali
core   +5 more sources

Left-invariant evolutions of wavelet transforms on the Similitude Group [PDF]

open access: yes, 2013
Enhancement of multiple-scale elongated structures in noisy image data is relevant for many biomedical applications but commonly used PDE-based enhancement techniques often fail at crossings in an image.
Duits, R., Sharma, U.
core   +4 more sources

Reseaech on identification of caving coal and rock traits

open access: yesGong-kuang zidonghua, 2017
In order to recognize caving coal and rock traits in fully mechanized caving face, an identification method based on continuous wavelet transform and improved singular value decomposition (SVD) was proposed.
LI Yiming, FU Shichen, LI Rui, WU Miao
doaj   +1 more source

Application of wavelet transform for evaluation of hydrocarbon reservoirs: example from Iranian oil fields in the north of the Persian Gulf [PDF]

open access: yesNonlinear Processes in Geophysics, 2013
The Persian Gulf and its surrounding area are some of the biggest basins and have a very important role in producing huge amounts of hydrocarbon, and this potential was evaluated in order to explore the target for geoscientists and petroleum engineers ...
M. R. Saadatinejad, H. Hassani
doaj   +1 more source

Continuous wavelet transform on local fields [PDF]

open access: yes, 2015
The main objective of this paper is to define the mother wavelet on local fields and study the continuous wavelet transform (CWT) and some of their basic properties.
Pathak, Ashish
core   +4 more sources

Wavelet-Based Algorithm for Signal Analysis

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper presents a computational algorithm for identifying power frequency variations and integer harmonics by using wavelet-based transform. The continuous wavelet transform (CWT) using the complex Morlet wavelet (CMW) is adopted to detect the ...
Lai LL, Tse Norman CF
doaj   +2 more sources

Generalized Continuous Integral Wavelet Transform and Its Properties

open access: yesRatio Mathematica, 2022
In this paper, the generalized admissibility condition has been obtained and corresponding generalized continuous integral wavelet transforms have been defined. Two new theorems on generalized continuous integral wavelet transforms are established.
Manoj Kumar
doaj   +1 more source

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