Results 11 to 20 of about 257,540 (280)

Damage Identification in Reinforced Concrete Beams Using Wavelet Transform of Modal Excitation Responses

open access: yesBuildings, 2023
This study focuses on identifying damage in reinforced concrete (RC) beams using time-domain modal testing and wavelet analysis. A numerical model of an RC beam was used to generate various damage scenarios with different severities and locations ...
Atefeh Soleymani   +5 more
doaj   +1 more source

Wavelets: a powerful tool for studying rotation, activity, and pulsation in Kepler and CoRoT stellar light curves [PDF]

open access: yes, 2014
Aims. The wavelet transform has been used as a powerful tool for treating several problems in astrophysics. In this work, we show that the time-frequency analysis of stellar light curves using the wavelet transform is a practical tool for identifying ...
Bravo, J. P.   +4 more
core   +1 more source

Research on Mechanical Fault Diagnosis Scheme Based on Improved Wavelet Total Variation Denoising

open access: yesShock and Vibration, 2016
Wavelet analysis is a powerful tool for signal processing and mechanical equipment fault diagnosis due to the advantages of multiresolution analysis and excellent local characteristics in time-frequency domain. Wavelet total variation (WATV) was recently
Wentao He   +3 more
doaj   +1 more source

Structural Damage Diagnosis of Reinforced Concrete Moment-Resisting Frame using Wavelet Based-Damage Sensitive Feature [PDF]

open access: yesNumerical Methods in Civil Engineering
This paper describes the derivation of a wavelet-based damage-sensitive feature for structural damage diagnosis in a reinforced concrete moment-resisting frame.
Minoo Panahi Boroujeni   +3 more
doaj   +1 more source

Joint Time-Frequency And Wavelet Analysis - An Introduction

open access: yesMetrology and Measurement Systems, 2014
A traditional frequency analysis is not appropriate for observation of properties of non-stationary signals. This stems from the fact that the time resolution is not defined in the Fourier spectrum.
Majkowski Andrzej   +2 more
doaj   +1 more source

MULTIFRACTAL CROSS WAVELET ANALYSIS [PDF]

open access: yesFractals, 2017
Complex systems are composed of mutually interacting components and the output values of these components usually exhibit long-range cross-correlations. Using wavelet analysis, we propose a method of characterizing the joint multifractal nature of these long-range cross correlations, a method we call multifractal cross wavelet analysis (MFXWT).
ZHI-QIANG JIANG   +3 more
openaire   +2 more sources

Timeline analysis and wavelet multiscale analysis of the AKARI All-Sky Survey at 90 micron [PDF]

open access: yes, 2008
We present a careful analysis of the point source detection limit of the AKARI All-Sky Survey in the WIDE-S 90 $\mu$m band near the North Ecliptic Pole (NEP).
Clements, Dave   +19 more
core   +2 more sources

WAVELET ANALYSIS OF PROTEIN MOTION [PDF]

open access: yesInternational Journal of Wavelets, Multiresolution and Information Processing, 2012
As high-throughput molecular dynamics simulations of proteins become more common and the databases housing the results become larger and more prevalent, more sophisticated methods to quickly and accurately mine large numbers of trajectories for relevant information will have to be developed.
Benson, Noah C., Daggett, Valerie
openaire   +3 more sources

Signal Extraction from GNSS Position Time Series Using Weighted Wavelet Analysis

open access: yesRemote Sensing, 2020
The daily position time series derived by Global Navigation Satellite System (GNSS) contain nonlinear signals which are suitably extracted by using wavelet analysis.
Kunpu Ji, Yunzhong Shen, Fengwei Wang
doaj   +1 more source

Local appearance-based face recognition using adaptive directional wavelet transform

open access: yesJournal of King Saud University: Computer and Information Sciences, 2019
The latest research has shown that adaptive directional wavelet transform can constitute edges and textures in images efficiently due to the adaptive directional selectivity.
Mohd. Abdul Muqeet, Raghunath S. Holambe
doaj   +1 more source

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