Results 21 to 30 of about 3,308 (181)

Method of Lines With Haar Wavelet For Solving Parabolic Differential Equation [PDF]

open access: yesمجلة التربية والعلم, 2006
In this paper we present a theoretical framework and numerical comparisons for a wavelet-based algorithm associated with both method of lines and wavelets for solving some partial differential equations.
Kais Ismail Ibraheem
doaj   +1 more source

Wavelets in Combination with Stochastic and Machine Learning Models to Predict Agricultural Prices

open access: yesMathematics, 2023
Wavelet decomposition in signal processing has been widely used in the literature. The popularity of machine learning (ML) algorithms is increasing day by day in agriculture, from irrigation scheduling and yield prediction to price prediction.
Sandip Garai   +6 more
doaj   +1 more source

Inpainting by Flexible Haar-Wavelet Shrinkage [PDF]

open access: yesSIAM Journal on Imaging Sciences, 2008
We present novel wavelet-based inpainting algorithms. Applying ideas from anisotropic regularization and diffusion, our models can better handle degraded pixels at edges. We interpret our algorithms within the framework of forward-backward splitting methods in convex analysis and prove that the conditions for ensuring their convergence are fulfilled ...
Raymond H. Chan   +2 more
openaire   +1 more source

Approximations to linear Klein–Gordon Equations using Haar wavelet

open access: yesAin Shams Engineering Journal, 2021
In this research article, two Haar wavelet collocation methods (HWCMs) (namely one dimensional HWCM and two dimensional HWCM) are adapted to approximate linear homogeneous and linear non-homogeneous Klein–Gordon equations.
Sana Ikram   +2 more
doaj   +1 more source

MUSCL reconstruction and Haar wavelets [PDF]

open access: yesCommunications in Mathematical Sciences, 2015
MUSCL extensions (Monotone Upstream-centered Schemes for Conservation Laws) of the Godunov numerical scheme for scalar conservation laws are shown to admit a rather simple reformulation when recast in the formalism of the Haar multi-resolution analysis of L2(R).
openaire   +1 more source

Optimal quadrature for Haar wavelet spaces [PDF]

open access: yesMathematics of Computation, 2003
This article considers the error of the scrambled equidistribution quadrature rules in the worst-case, random-case, and average-case settings. The underlying space of integrands is a Hilbert space of multidimensional Haar wavelet series,
Stefan Heinrich   +2 more
openaire   +2 more sources

Assessment of Haar Wavelet-Quasilinearization Technique in Heat Convection-Radiation Equations

open access: yesApplied Computational Intelligence and Soft Computing, 2014
We showed that solutions by the Haar wavelet-quasilinearization technique for the two problems, namely, (i) temperature distribution equation in lumped system of combined convection-radiation in a slab made of materials with variable thermal conductivity
Umer Saeed, Mujeeb ur Rehman
doaj   +1 more source

Discrete differential operators in multidimensional Haar wavelet spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We consider a class of discrete differential operators acting on multidimensional Haar wavelet basis with the aim of finding wavelet approximate solutions of partial differential problems.
Carlo Cattani, Luis M. Sánchez Ruiz
doaj   +1 more source

Image Compression using Haar and Modified Haar Wavelet Transform

open access: yesTikrit Journal of Engineering Sciences, 2011
Efficient image compression approaches can provide the best solutions to the recent growth of the data intensive and multimedia based applications. As presented in many papers the Haar matrix–based methods and wavelet analysis can be used in various ...
Mohannad Abid Shehab Ahmed   +2 more
doaj   +1 more source

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