Results 21 to 30 of about 160,937 (210)

Dynamics of flight of the fragments with higher order Haar wavelet method [PDF]

open access: yesProceedings of the Estonian Academy of Sciences
Fragments that have an irregular shape and move at high speeds are difficult to assess since experiments require high-tech solutions, and the differential equations that describe the motion cannot be solved analytically.
Lenart Kivistik   +3 more
doaj   +1 more source

A Haar Wavelet Decision Feedback Channel Estimation Method in OFDM Systems

open access: yesApplied Sciences, 2018
Channel estimation is a key technology in improving the performance of the orthogonal frequency division multiplexing (OFDM) system. The pilot-based channel estimation method decreases the spectral efficiency and data transmission rate. Some conventional
Ruiguang Tang, Xiao Zhou, Chengyou Wang
doaj   +1 more source

Numerical solution of the second order linear and nonlinear integro-differential equations using Haar wavelet method

open access: yesArab Journal of Basic and Applied Sciences, 2021
In this paper, a numerical algorithm is developed for the solution of second order linear and nonlinear integro-differential equations. The Haar collocation technique is applied to second order linear and nonlinear integro-differential equations. In Haar
Rohul Amin   +4 more
semanticscholar   +1 more source

Non-dyadic Haar Wavelet Algorithm for the Approximated Solution of Higher order Integro-Differential Equations

open access: yesInternational 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
doaj   +1 more source

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

Numerical Investigation of Fractional-Order Differential Equations via φ -Haar-Wavelet Method

open access: yesJournal of Function Spaces, 2021
In this paper, we propose a novel and efficient numerical technique for solving linear and nonlinear fractional differential equations (FDEs) with the φ -Caputo fractional derivative.
F. M. Alharbi   +4 more
semanticscholar   +1 more source

Numerical solution of damped forced oscillator problem using Haar wavelets [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2015
We present here the numerical solution of damped forced oscillator problem using Haar wavelet and compare the numerical results obtained with some well-known numerical methods such as Runge-Kutta fourth order classical and Taylor Series methods ...
Inderdeep Singh, Sheo Kumar
doaj   +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

A Comparative Study using Scale-2 and Scale-3 Haar Wavelet for the Solution of Higher Order Differential Equation [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2023
A comparative study of scale-2 and scale-3 Haar wavelet has been presented to illustrate the level of accuracy attained by both the wavelets by applying on higher order differential equations known as Emden fowler equation, which has great importance in ...
Ratesh Kumar, Jaya Gupta
doaj   +1 more source

Feedback Control Method Using Haar Wavelet Operational Matrices for Solving Optimal Control Problems

open access: yesAbstract and Applied Analysis, 2013
Most of the direct methods solve optimal control problems with nonlinear programming solver. In this paper we propose a novel feedback control method for solving for solving affine control system, with quadratic cost functional, which makes use of only ...
Waleeda Swaidan, Amran Hussin
doaj   +1 more source

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