Results 1 to 10 of about 106,984 (281)

Osiris wavelets and Set wavelets [PDF]

open access: yesJournal of Applied Mathematics, 2004
An alternative to Osiris wavelet systems is introduced in two dimensions. The basic building blocks are continuous piecewise linear functions supported on equilateral triangles instead of on squares.
Guy Battle
doaj   +4 more sources

Hermite wavelets operational matrix of integration for the numerical solution of nonlinear singular initial value problems

open access: yesAlexandria Engineering Journal, 2018
In this paper, new operational matrix of integration is generated by using Hermite wavelets. By aid of these matrices, Hermite wavelets operational matrix method (HWOMM) is developed for second ordered nonlinear singular initial value problems ...
S.C. Shiralashetti, S. Kumbinarasaiah
doaj   +3 more sources

Design of Biorthogonal Wavelets based on Spline and Spline-like Functions for Image Compression

open access: yesInternational Journal of Emerging Research in Engineering, Science, and Management, 2022
Wavelet theory inspired from Fourier analysis is based on the basis function and its properties. Different wavelets use different basis functions which may better suit to some applications.
K Subramanyam, T Ramasri
doaj   +1 more source

Lifting scheme‐based matched wavelet design for effective characterisation of different types of voltage sag

open access: yesIET Science, Measurement & Technology, 2021
This study presents a novel scheme for designing biorthogonal wavelets matched to the voltage sag (VS) signals. Instead of using standard wavelets, matched wavelets designed in this study can extract more distinguishing features for better ...
Akanksha Aggarwal, Manish Kumar Saini
doaj   +1 more source

A Comparative Study of Wavelets Methods for Solving Non-Linear Two-Dimensional Boussinesq System of Type BBM-BBM [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2014
In this paper, numerical techniques based on the wavelets methods are proposed for the numerical solution of non-linear two-dimensional BBM-BBM system and we compared between them.
Ekhlass Al-Rawi, Ahmed Qasim
doaj   +1 more source

Gaussian and Golden Wavelets: A Comparative Study and their Applications in Structural Health Monitoring

open access: yesTrends in Computational and Applied Mathematics, 2021
In this work, a comparative analysis between Gaussian and Golden wavelets is presented. These wavelets are generated by the derivative of specific base functions.
F. E. Gossler   +5 more
doaj   +1 more source

Estimation of the regression function by Legendre wavelets [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2022
We estimate a function f with N independent observations by using Leg-endre wavelets operational matrices. The function f is approximated with the solution of a special minimization problem.
M. Hamzehnejad, M.M. Hosseini, A. Salemi
doaj   +1 more source

Wavelet-induced renormalization group for the Landau-Ginzburg model [PDF]

open access: yes, 1999
The scale hierarchy of wavelets provides a natural frame for renormalization. Expanding the order parameter of the Landau-Ginzburg/$\Phi^4$ model in a basis of compact orthonormal wavelets explicitly exhibits the coupling between scales that leads to non-
C. Best, Chui, Daubechies, Goldenfeld
core   +4 more sources

Wavelet deconvolution

open access: yesIEEE Transactions on Information Theory, 2002
Summary: This paper studies the issue of optimal deconvolution density estimation using wavelets. The approach taken here can be considered as orthogonal series estimation in the more general context of the density estimation. We explore the asymptotic properties of estimators based on thresholding of estimated wavelet coefficients.
Jianqing Fan, Ja-Yong Koo
openaire   +3 more sources

Construction of Hilbert Transform Pairs of Wavelet Bases and Gabor-like Transforms [PDF]

open access: yes, 2009
We propose a novel method for constructing Hilbert transform (HT) pairs of wavelet bases based on a fundamental approximation-theoretic characterization of scaling functions--the B-spline factorization theorem. In particular, starting from well-localized
Chaudhury, Kunal Narayan, Unser, Michael
core   +4 more sources

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