Showing 481 - 500 results of 610 for search '"wavelet"', query time: 0.04s Refine Results
  1. 481

    Research on the Estimation Model of Electrical Parameters of Silver-Based Contacts Based on Surface Morphology by Chao Wang, Xiancheng Wang, Chengjun Guo

    Published 2025-01-01
    “…Various original profile signals such as surface roughness, waviness, and surface form error are calculated using wavelet transformation, and a robust weight function is introduced to separate micro-textural features from macro-textural features. …”
    Get full text
    Article
  2. 482

    Identifying and Evaluating Chaotic Behavior in Hydro-Meteorological Processes by Soojun Kim, Yonsoo Kim, Jongso Lee, Hung Soo Kim

    Published 2015-01-01
    “…The time series in the period of approximately one year were extracted from the original series using the wavelet transform. The generated time series from summation of sine functions were fitted to each series and used for investigating the hypotheses. …”
    Get full text
    Article
  3. 483

    A Flexible UHF RFID Respiratory Sensor by Jéssyca I. L. Araujo, Georgina K. F. Serres, Simone Genovesi, Danilo F. S. Santos, Alexandre J. R. Serres

    Published 2025-01-01
    “…The RSSI data collected from the RFID tag readings were processed using the Daubechies wavelet of order 5 (db5) with three levels of signal decomposition, resulting in signals with reduced noise. …”
    Get full text
    Article
  4. 484

    Computational aerodynamics of insect flight using volume penalization by Engels, Thomas, Truong, Hung, Farge, Marie, Kolomenskiy, Dmitry, Schneider, Kai

    Published 2022-11-01
    “…Two open source codes, one based on Fourier, the other based on wavelet representation, are succinctly presented and a mass-spring flexible wing model is described. …”
    Get full text
    Article
  5. 485

    A bivariate multifractal analysis approach to understanding socio-spatial segregation dynamics by Janka Lengyel, Stéphane G. Roux, Olivier Bonin, Stéphane Jaffard, Patrice Abry

    Published 2025-02-01
    “…In this context, the proposed approach, which uses wavelet leaders for multifractal analysis of irregular point processes, estimates self-similarity and intermittency exponents as well as self-similar and multifractal cross-correlation by combining classical multifractal and geographic analysis methods. …”
    Get full text
    Article
  6. 486

    Climate Change and Fruit-Picking Tourism: Impact and Adaptation by Jun Liu, Fan Chen, Quansheng Ge, Yunyun Li

    Published 2016-01-01
    “…In this paper, phenological data on the FMD for 45 types of plants in 1980–2012, dates for more than 200 fruit-picking festivals, and data on monthly average air temperature in 1980–2013 were used to assess the impact of CC on FPTA by wavelet and correlation analyses. The findings indicated that the study area had been significantly affected by CC. …”
    Get full text
    Article
  7. 487

    Dynamic Response and Its Frequency Domain Characteristics of Lateritic Soil Subgrade under Traffic Load during Construction by Wei Bai, Kun Mu, Lingwei Kong, Wenbo Zhang, Xiu Yue

    Published 2020-01-01
    “…The distribution law of the dynamic response and its frequency domain characteristics obtained by wavelet analysis emerged. The vibration of the subgrade is clearly aggravated by the increase of speed and load. …”
    Get full text
    Article
  8. 488

    The Hybrid KICA-GDA-LSSVM Method Research on Rolling Bearing Fault Feature Extraction and Classification by Jiyong Li, Shunming Li, Xiaohong Chen, Lili Wang

    Published 2015-01-01
    “…A new method named sensitive subband feature set design (SSFD) based on wavelet packet is also presented; using proposed variance differential spectrum method, the sensitive subbands are selected. …”
    Get full text
    Article
  9. 489

    A Hybrid Process Monitoring and Fault Diagnosis Approach for Chemical Plants by Lijie Guo, Jianxin Kang

    Published 2015-01-01
    “…Based on hazard and operability (HAZOP) analysis, kernel principal component analysis (KPCA), wavelet neural network (WNN), and fault tree analysis (FTA), a hybrid process monitoring and fault diagnosis approach is proposed in this study. …”
    Get full text
    Article
  10. 490

    Market Power, NAIRU, and the Phillips Curve by Derek Zweig

    Published 2020-01-01
    “…We find weak evidence supporting the NAIRU theory from the simplistic model, but stronger evidence using BVAR. A wavelet analysis reveals that the short-run NAIRU theory and Phillips curve relationships may be time-dependent, while the long-run relationships are essentially vertical, suggesting instead that each relationship is primarily observed over the medium-term (2-10 years), though the economically significant medium-term region has narrowed in recent decades to roughly 4-7 years. …”
    Get full text
    Article
  11. 491

    Digital Rebirth of Dongba Pattern: An Improved Active Contour Model for Pattern Contour Extraction by Yuan Li, Tao Wu, Rongbing Fu, En Lu

    Published 2025-01-01
    “…The improved active contour method adds discrete wavelet transform for energy minimization. Moreover, the minimization formula assigns greater weight to foreground pixels. …”
    Get full text
    Article
  12. 492

    Graph-Based Analysis of RNA Secondary Structure Similarity Comparison by Lina Yang, Yang Liu, Xiaochun Hu, Patrick Wang, Xichun Li, Jun Wu

    Published 2021-01-01
    “…A combinational method involving a discrete wavelet transform (DWT) and fractal dimension with sliding window is introduced to analyze and compare the graphs derived from feature extraction; after that, the distance matrix is generated. …”
    Get full text
    Article
  13. 493

    Fault Diagnosis of Subway Traction Motor Bearing Based on Information Fusion under Variable Working Conditions by Yanwei Xu, Weiwei Cai, Tancheng Xie

    Published 2021-01-01
    “…Then, the original signal is processed and extracted by the wavelet packet decomposition, and the normalized feature information is fused by the convolution neural network. …”
    Get full text
    Article
  14. 494

    Research on Coal-Rock Fracture Image Edge Detection Based on Tikhonov Regularization and Fractional Order Differential Operator by Chunsheng Liu, Chunping Ren

    Published 2019-01-01
    “…In addition, the proposed method is compared with Canny algorithm, B-spline wavelet transform, and multidirection fuzzy morphological edge detection method, can detect more coal-rock fracture infrared image edge details, and is more robust to noise.…”
    Get full text
    Article
  15. 495

    Spatial and Temporal Variability of Sea Surface Temperature in Eastern Marginal Seas of China by Renhao Wu, Jianmin Lin, Bo Li

    Published 2016-01-01
    “…In order to investigate the interannual variation of SST, the EMSC SST interannual index was constructed. Based on wavelet analysis, a significant peak around 3.3 years was found in the EMSC SST interannual index. …”
    Get full text
    Article
  16. 496

    Diagnosis experience of traction engines of locomotives by Ngoulou-A-Ndzeli, V. Yu. Tetter, V. G. Shakhov

    Published 2019-03-01
    “…Authors propose a method and algorithms for the rapid diagnosis of locomotives traction engines based on duplication of main frequency channel by additional wavelet analysis and decision — making on the methodology of fuzzy logic. …”
    Get full text
    Article
  17. 497

    Blind Source Parameters for Performance Evaluation of Despeckling Filters by Nagashettappa Biradar, M. L. Dewal, ManojKumar Rohit, Sanjaykumar Gowre, Yogesh Gundge

    Published 2016-01-01
    “…The SMPI is three times more effective compared to the wavelet based generalized likelihood estimation approach. …”
    Get full text
    Article
  18. 498

    Shockwave-Based Automated Vehicle Longitudinal Control Algorithm for Nonrecurrent Congestion Mitigation by Liuhui Zhao, Joyoung Lee, Steven Chien, Cheol Oh

    Published 2017-01-01
    “…In the advent of Connected/Automated Vehicle (C/AV) environment, the proposed algorithm can be applied to capture instantaneous shockwaves constructed from vehicular speed profiles shared by individual equipped vehicles. With a continuous wavelet transform (CWT) method, the algorithm detects abnormal speed drops in real-time and optimizes speed to prevent the shockwave propagating to the upstream traffic. …”
    Get full text
    Article
  19. 499

    Exploring the role of ICT adoption technologies and renewable energy consumption in achieving a sustainable environment in the United States: an SDGs-based policy framework by Tomiwa Sunday Adebayo, Oktay Özkan, Dilber Uzun Ozsahin, Babatunde Sunday Eweade, Bright Akwasi Gyamfi

    Published 2025-01-01
    “…This study, therefore, investigates the key drivers of CO2 emissions (CO2) in the United States using data from 1990Q1 to 2021Q4. The study employs wavelet quantile-on-quantile regression along with quantile cointegration to analyze these dynamics across different quantiles and timeframes. …”
    Get full text
    Article
  20. 500

    Maximum Entropy Threshold Segmentation for Target Matching Using Speeded-Up Robust Features by Mu Zhou, Xia Hong, Zengshan Tian, Huining Dong, Mingchun Wang, Kunjie Xu

    Published 2014-01-01
    “…Third, from the 2D Haar wavelet responses, we generate the 64-dimensional (64D) feature point descriptor vectors. …”
    Get full text
    Article