Results 61 to 70 of about 33,160 (194)

Two-dimensional Haar Wavelet Method for Numerical Solution of Delay Partial Differential Equations

open access: yesJournal of Function Spaces, 2022
In this paper, a two-dimensional Haar wavelet collocation method is applied to obtain the numerical solution of delay and neutral delay partial differential equations. Both linear and nonlinear problems can be solved using this method. Some benchmark test problems are given to verify the efficiency and accuracy of the aforesaid method.
Rohul Amin   +4 more
openaire   +2 more sources

Comparative Analysis of Wavelet Bases for Solving First-Kind Fredholm Integral Equations

open access: yesComputation
This research presents a comparative analysis of numerical methods for solving first-kind Fredholm integral equations using the Bubnov–Galerkin method with various wavelet and orthogonal polynomial bases.
Nurlan Temirbekov   +3 more
doaj   +1 more source

A time-varying wavelet phase extraction method using the wavelet amplitude spectra

open access: yesSystems Science & Control Engineering, 2018
The vertical resolution of seismic data is greatly affected by time-varying seismic wavelets, and the phase extraction is the key topic for the accurate wavelet extraction.
Peng Zhang   +4 more
doaj   +1 more source

Numerical solution of volterra integral equations with weakly singular kernel using legendre wavelet method [PDF]

open access: yesMathematics and Computational Sciences
The presented paper investigates a new numerical method based on the characteristics of Legendre wavelet for solving Volterra Integral equations in this method,With the help of block-pulse functions and their characteristics, we obtain the fractional ...
Ali Khani, Nader Belalzadeh
doaj   +1 more source

Adaptive Multi-Rate Wavelet Method for Circuit Simulation [PDF]

open access: yes, 2014
In this paper a new adaptive algorithm for multi-rate circuit simulation encountered in the design of RF circuits based on spline wavelets is presented.
Bittner, K., Brachtendorf, H. G.
core   +1 more source

Introducing Legendre wavelet functions for damage detection in laminated composite beams

open access: yesComposites Part C: Open Access
This paper introduces Legendre wavelets as a novel wavelet type and explores their effectiveness in detecting damage in carbon-epoxy composite beams.
Morteza Saadatmorad   +2 more
doaj   +1 more source

Biorthogonal-Wavelet-Based Method for Numerical Solution of Volterra Integral Equations [PDF]

open access: yesEntropy, 2019
Framelets theory has been well studied in many applications in image processing, data recovery and computational analysis due to the key properties of framelets such as sparse representation and accuracy in coefficients recovery in the area of numerical and computational theory.
openaire   +2 more sources

Derivation of Eurocode 8 spectrum-compatible time-histories from recorded seismic accelerograms via harmonic wavelets [PDF]

open access: yes, 2010
A computationally efficient harmonic wavelet-based iterative procedure is proposed to modify suites of recorded accelerograms to be used in the aseismic design of critical structures regulated by the European code provisions (EC8).
Giaralis, A., Spanos, P. D.
core   +1 more source

Wavelet transforms and their applications to MHD and plasma turbulence: a review

open access: yes, 2015
Wavelet analysis and compression tools are reviewed and different applications to study MHD and plasma turbulence are presented. We introduce the continuous and the orthogonal wavelet transform and detail several statistical diagnostics based on the ...
Farge, Marie, Schneider, Kai
core   +3 more sources

Wavelet methods for the numerical analysis of oscillatory integrals

open access: yes, 2004
We have worked with three families of functions known for their localisation in space and in frequency: the wavelet basis, the wavelet packet basis, and the Malvar local cosine basis. We have constructed and implemented two algorithms: --- for the equation $\Delta(u)+\1e^(c*u)=f$ with $f$ having a tough singularity, we have proved sharp complexity ...
openaire   +2 more sources

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