Showing 41 - 60 results of 114 for search '"wavelet analysis"', query time: 0.07s Refine Results
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    A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) by YU FangAi, ZHOU Bo, ZHANG XueYan, XIN Wen

    Published 2022-01-01
    “…Compared with the traditional wavelet analysis, the harmonic wavelet analysis can detect the different damage characteristics and damage modes of composite blade with delamination defects accurately. …”
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    Article
  8. 48

    Research on Mechanical Fault Diagnosis Scheme Based on Improved Wavelet Total Variation Denoising by Wentao He, Cancan Yi, Yourong Li, Han Xiao

    Published 2016-01-01
    “…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. …”
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    Article
  9. 49

    Structural Health Monitoring of Steel Pipes under Different Boundary Conditions and Choice of Signal Processing Techniques by Rais Ahmad, Tribikram Kundu

    Published 2012-01-01
    “…Fourier analysis and wavelet analysis are two popular signal processing techniques that provide a flexible set of tools for solving various fundamental problems in science and engineering. …”
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    Article
  10. 50

    An Integrative Approach to Understand the Climatic-Hydrological Process: A Case Study of Yarkand River, Northwest China by Jianhua Xu, Yiwen Xu, Chunan Song

    Published 2013-01-01
    “…Taking the Yarkand River as an example, this paper conducted an integrative approach combining the Durbin-Watson statistic test (DWST), multiple linear regression (MLR), wavelet analysis (WA), coefficient of determination (CD), and Akaike information criterion (AIC) to analyze the climatic-hydrological process of inland river, Northwest China from a multitime scale perspective. …”
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    Article
  11. 51

    Insights on Climate-Driven Fluctuations of Cave 222Rn and CO2 Concentrations Using Statistical and Wavelet Analyses by Concepcion Pla, Angel Fernandez-Cortes, Soledad Cuezva, Juan Jose Galiana-Merino, Juan Carlos Cañaveras, Sergio Sanchez-Moral, David Benavente

    Published 2020-01-01
    “…For this purpose, we combined a set of mathematical methods that included a statistical and wavelet analysis of a 6-year time series in Rull Cave (Spain). …”
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    Article
  12. 52

    Unveiling the future: Wavelet- ARIMAX analysis of climate and diarrhea dynamics in Bangladesh’s Urban centers by Md. Waliullah, Md. Jamal Hossain, Md. Raqibul Hasan, Abdul Hannan, Mohammad Mafizur Rahman

    Published 2025-01-01
    “…The Wavelet-ARIMAX method, which uses wavelet analysis within the ARIMAX structure, is better at forecasting performance and model fit than the standard ARIMAX model. …”
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  13. 53

    Monitoring of ball bearings via vibration analysis and envelope technique for predictive maintenance purposes by Adiel Pessoa, Paulo Cezar Büchner

    Published 2023-11-01
    “…Current techniques, such as envelope and wavelet analysis, are effective but have limitations. New technologies and methods, are being explored to improve fault detection and classification, providing early detection of faults and differentiation between different fault types, ultimately reducing the impact of ball bearing failures on machines and industries. …”
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    Article
  14. 54

    Temporal shifts in dengue epidemic in Guangdong Province before and during the COVID-19 pandemic: a Bayesian model study from 2012 to 2022. by Jiaqing Xu, Xiaohua Tan, Yi Quan, Dexin Gong, Hui Deng, Jianguo Zhao, Xing Huang, Yingtao Zhang, Zhoupeng Ren, Zuhua Rong, Weilin Zeng, Xing Li, Wenyuan Zheng, Shu Xiao, Jianpeng Xiao, Meng Zhang

    Published 2025-02-01
    “…<h4>Results</h4>Wavelet analysis showed that the local dengue incidence in Guangdong Province was in phase correlation with the dengue incidence of the prior month in relative SEA countries. …”
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    Article
  15. 55

    Study on Precipitation Change in Nanchang and Its Correlation with Global Climate Index by WU Bin, LIU Weilin, WAN Yifan, LIU Lina, ZHU Shengnan, HUANG Yipeng

    Published 2020-01-01
    “…In order to study the rules of precipitation change in Nanchang City under thebackground of global warming, based on the precipitation data of Nanchang Station from 1960 to2018, this paper analyzes the change trend, periodic characteristics and abrupt change ofprecipitation by the Mann-Kendall test and wavelet analysis, and discusses the correlation betweenannual precipitation and some global climate indexes. …”
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  16. 56

    Investigating uncertainty and parameter sensitivity in bedform analysis by using a Monte Carlo approach by J. Reich, A. Winterscheid

    Published 2025-02-01
    “…Here, however, the wavelet analysis offers orientation by providing a range of plausible input window sizes, and it thus allows for a reduction in uncertainty. …”
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    Article
  17. 57

    Chaotic Dynamics Analysis Based on Financial Time Series by Zheng Gu, Yuhua Xu

    Published 2021-01-01
    “…Firstly, the nonlinear characteristics of the data are discussed through the empirical analysis of agriculture index data; the daily agriculture index returns can be decomposed into the different scales based on wavelet analysis. Secondly, the dynamic system of some nonlinear characteristic data is established according to the Taylor series expansion form, and the corresponding dynamic characteristics are analyzed. …”
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    Article
  18. 58

    Image saliency detection in wavelet domain based on the contrast sensitivity function by Ying-chun GUO, Yan-hong FENG, Gang YAN, Ming YU

    Published 2015-10-01
    “…A method of high definition saliency detection based on contrast sensitive function and wavelet analysis was proposed in order to improve the resolution of saliency maps.Original image was filtered by contrast sensitive function in YCbCr space,which could simulate the contrast of human eyes; then wavelet decomposition was carried out in Y,Cb,and Cr three channels individually,low frequency and high frequency feature saliency maps were extracted and further combined to obtain saliency map in single channel; finally saliency maps in three channels were fused to the high resolution saliency map.Experiments result show that the saliency images have high resolution,well-defined boundaries,and whole highlight salient objects.…”
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  19. 59

    Transmission Accuracy Test Bed of Precision Gearbox with Small Modulus Gear by Qiao Yongqiang, Zheng Guoliang, Zhu Zhiyuan, Liu Xin, Chen Chao, Zhang Weiwei, Sun Zhiyang

    Published 2015-01-01
    “…By using the computer control,servo motor and precise angle measurement sensors,the test bed can control the circuits,the parameter detection of gearbox backlash,driving accuracy and efficiency can also be realized. By using the wavelet analysis in the single frequency filtering technology of its analysis software,the errors caused by all levels of the gearbox transmission chain can also be extracted by the test- bed.…”
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  20. 60

    Particle Size-Dependent Monthly Variation of Pollution Load, Ecological Risk, and Sources of Heavy Metals in Road Dust in Beijing, China by Cong Men, Donghui Li, Yunqi Jing, Ke Xiong, Jiayao Liu, Shikun Cheng, Zifu Li

    Published 2025-01-01
    “…The advanced three-way model and wavelet analysis were used in quantitative identification and time-series analysis of sources. …”
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    Article