Results 61 to 70 of about 15,236 (179)

Estimation of Delay Time in Linear Dynamic Systems Using Wavelets [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية
 This research explores the use of wavelets in estimating delay time in stochastic linear dynamic systems, as delay time plays a crucial role in diagnosing the system by determining the time interval between inputs and outputs.
Reem Taha   +2 more
doaj   +1 more source

Optimizing pantograph fractional differential equations: A Haar wavelet operational matrix method

open access: yesPartial Differential Equations in Applied Mathematics
In this study, we developed an operational matrix method of integration using Haar wavelets to solve both linear and nonlinear pantograph fractional differential equations by taking Atangana's beta derivative.
Najeeb Alam Khan   +5 more
doaj   +1 more source

Generalized Haar wavelet operational matrix method for solving hyperbolic heat conduction in thin surface layers

open access: yesResults in Physics, 2018
It is remarkably known that one of the difficulties encountered in a numerical method for hyperbolic heat conduction equation is the numerical oscillation within the vicinity of jump discontinuities at the wave front.
Suazlan Mt Aznam, M.S.H. Chowdhury
doaj   +1 more source

Multi-Resolution Wavelet-Transformed Image Analysis of Histological Sections of Breast Carcinomas

open access: yesCellular Oncology, 2005
Multi-resolution images of histological sections of breast cancer tissue were analyzed using texture features of Haar- and Daubechies transform wavelets.
Hae-Gil Hwang   +5 more
doaj   +1 more source

ABOUT MULTISCALE MODELING WITH THE USE OF HAAR DISCRETE WAVELETS FOR TARGETED DATA EXTRACTION IN PROBLEMS OF STRUCTURAL MECHANICS

open access: yesInternational Journal for Computational Civil and Structural Engineering
The distinctive paper is devoted to multiscale modelling of functions with the use of Haar discrete wavelets. Numerical implementation is realized with the use of “Fortran” programming language (“Intel Visual Fortran” software).
Mojtaba Aslami , Pavel Akimov
doaj   +1 more source

Implementing Fast-Haar Wavelet transform on original Ikonos images to perform image fusion: qualitative assessment

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
This article presents the Fast Haar Wavelet Transform (FHWT) algorithm applied to satellite-images fusion. FHWT is applied to both a multispectral image and a panchromatic Ikonos image using the digital image processing toolbox and wavelet toolbox ...
Javier Medina   +2 more
doaj   +1 more source

WARP: Wavelets with adaptive recursive partitioning for multi-dimensional data

open access: yes, 2019
Effective identification of asymmetric and local features in images and other data observed on multi-dimensional grids plays a critical role in a wide range of applications including biomedical and natural image processing.
Li, Meng, Ma, Li
core  

HAAR WAVELET ANALYSIS OF CLIMATIC TIME SERIES

open access: yesInternational Journal of Wavelets, Multiresolution and Information Processing, 2014
In order to extract the intrinsic information of climatic time series from background red noise, in this paper, we will first give an analytic formula on the distribution of Haar wavelet power spectra of red noise in a rigorous statistical framework. After that, by comparing the difference of wavelet power spectra of real climatic time series and red ...
Zhang, Zhihua   +2 more
openaire   +2 more sources

Delamination identification using machine learning methods and Haar wavelets

open access: yesComputer Assisted Methods in Engineering and Science, 2017
The present paper focuses on the identification of delamination size and location in homogeneous and composite laminates. The modal analysis methods are employed to calculate the data patterns.
Ljubov Feklistova, Helle Hein
doaj   +1 more source

The Effectiveness of two Dimensional Haar Wavelet Image De-noising performance using Soft or Hard Thresholding Approach

open access: yesTikrit Journal of Pure Science
Image de-noising and restoration represent basic problems in image processing with many different applications including engineering, reconstruction of missing data during their transmission and enhancement ..etc.
Wesam Hujab Saood, Khamees Khalaf Hasan
doaj   +1 more source

Home - About - Disclaimer - Privacy