Results 11 to 20 of about 1,387 (185)
Nonlinear Engineering, 2015 In this paper, we propose a new operational matrix method of fractional order integration based on Haar wavelets to solve fractional order differential equations numerically. The properties of Haar wavelets are first presented.
Shah Firdous A., Abbas R.
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APLICAÇÃO DE WAVELETS PARA REMOÇÃO DE RUÍDOS EM SINAIS UNIDIMENSIONAIS
Holos, 2008 Este trabalho descreve uma investigação da filtragem de diferentes tipos de sinais utilizando Wavelets, através do estudo empírico do nível de Threshold. Foram utilizados sinais senoidais padrão e sinais de voz.
Aderson Cleber Pifer +2 more
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Numerical solution of nonlinear stochastic Itô–Volterra integral equations based on Haar wavelets
Advances in Difference Equations, 2019 In this paper, an efficient numerical method is presented for solving nonlinear stochastic Itô–Volterra integral equations based on Haar wavelets.
Jieheng Wu, Guo Jiang, Xiaoyan Sang
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Advances in Difference Equations, 2020 An effective and robust scheme is developed for solutions of two-dimensional time fractional heat flow problems. The proposed scheme is based on two-dimensional Haar wavelets coupled with finite differences. The time fractional derivative is approximated
Abdul Ghafoor +3 more
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Inpainting by Flexible Haar-Wavelet Shrinkage [PDF]
SIAM 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
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The special atom space and Haar wavelets in higher dimensions
Demonstratio Mathematica, 2020 In this note, we will revisit the special atom space introduced in the early 1980s by Geraldo De Souza and Richard O’Neil. In their introductory work and in later additions, the space was mostly studied on the real line.
Kwessi Eddy +3 more
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Haar Matrix Equations for Solving Time-Variant Linear-Quadratic Optimal Control Problems [PDF]
Control and Optimization in Applied Mathematics, 2017 In this paper, Haar wavelets are performed for solving continuous time-variant linear-quadratic optimal control problems. Firstly, using necessary conditions for optimality, the problem is changed into a two-boundary value problem (TBVP).
Saeed Nezhadhosein
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International Journal of Mathematical, Engineering and Management Sciences, 2023 The objective of this study is to explore non-dyadic Haar wavelets for higher order integro-differential equations. In this research article, non-dyadic collocation method is introduced by using Haar wavelet for approximating the solution of higher order
Ratesh Kumar, Sabiha Bakhtawar
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MUSCL reconstruction and Haar wavelets [PDF]
Communications 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).
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Optimal quadrature for Haar wavelet spaces [PDF]
Mathematics 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
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