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401
Improved Method for Predicting the Performance of the Physical Links in Telecommunications Access Networks
Published 2018-01-01“…The basis of the operable and tested method will be introduced, then an improved version is shown, in which the problems derived from sampling of continuous functions of electrical parameters are eliminated by wavelet transformation. Also possibilities for simplification of the problem and a way of reducing the dimensions of the applied rule bases are presented. …”
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402
Detection of Two-Level Inverter Open-Circuit Fault Using a Combined DWT-NN Approach
Published 2018-01-01“…This paper work addresses a diagnostic technique based on the discrete wavelet transform (DWT) algorithm and the approach of neural network (NN), for the detection of an inverter IGBT open-circuit switch fault. …”
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403
A Method Combining Fractal Analysis and Single Channel ICA for Vibration Noise Reduction
Published 2021-01-01“…Noisy component signals are then processed by wavelet denoising. Finally, the output signal after noise reduction is reconstructed using the filtered “right” component signals. …”
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404
A Nonparametric Method for Automatic Denoising of Microseismic Data
Published 2018-01-01“…The results of the proposed method are compared against ensemble empirical mode decomposition (EEMD) and wavelet denoising methods, which shows the effectiveness of the method for denoising and improving the SNR of microseismic data.…”
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405
Efficient Prediction of Network Traffic for Real-Time Applications
Published 2019-01-01“…Many predictors from three different classes, including classic time series, artificial neural networks, and wavelet transform-based predictors, are compared. …”
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406
IT diagnostics of Parkinson's disease based on voice markers and decreased motor activity
Published 2024-01-01“…The time-frequency function, (the wavelet function) and the Meyer kepstral coefficient function are used. …”
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407
Do Local and World COVID-19 Media Coverage Drive Stock Markets? Time-Frequency Analysis of BRICS
Published 2022-01-01“…With datasets covering January 2020 to March 2022, we employ the wavelet coherence technique on two major subsamples, viz. initial outbreak year sample and the “new normal” era sample. …”
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408
Application of Variational Mode Decomposition and k-Nearest Neighbor Algorithm in the Quantitative Nondestructive Testing of Wire Ropes
Published 2019-01-01“…Our design implements variational mode decomposition (VMD) and a wavelet transformation to remove noise from the raw MFL signals. …”
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409
3D Automatic Segmentation of Brain Tumor Based on Deep Neural Network and Multimodal MRI Images
Published 2022-01-01“…In addition, this paper constructs an automatic diagnosis system for brain tumors, uses GLCM and discrete wavelet transform (DWT) to extract features from MRI images, and then uses a convolutional neural network (CNN) for final diagnosis; finally, through four. …”
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410
An Improved AAM Method for Extracting Human Facial Features
Published 2012-01-01“…Firstly, translation invariant wavelet transform is performed on face images and then image structure is represented using the measure which is obtained by fusing the low-frequency coefficients with edge intensity. …”
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411
Compressed sensing for electrocardiogram acquisition in wireless body sensor network: A comparative analysis
Published 2019-07-01“…The performances of involved important factors, such as wavelet basis, overcomplete dictionaries, and the reconstruction algorithms, are comparatively illustrated, with the purpose to give data reference for practical applications. …”
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412
Screw Remaining Life Prediction Based on Quantum Genetic Algorithm and Support Vector Machine
Published 2017-01-01“…Accelerometers are installed to monitor the performance degradation of ball screw. Combined with wavelet packet decomposition and isometric mapping (Isomap), the sensitive feature vectors are obtained and stored in database. …”
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413
The Role of Sustainable Competitiveness Indicator in Malaysian Tourism and Economic Growth
Published 2024-12-01“…Through the implementation of bivariate wavelet coherence analysis, the empirical results indicated that the constructed indicator has a positive leading role in Malaysian tourism development and economic growth. …”
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414
Research on Small Sample Nonlinear Cointegration Test and Modeling Based on the LS-SVM Optimized by PSO
Published 2022-01-01“…We also compare the prediction results with the wavelet neural network algorithm, and the results show that the generalization ability of LS-SVM Optimized by PSO is better, and the prediction accuracy of small samples is higher.…”
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415
An Eigenpoint Based Multiscale Method for Validating Quantitative Remote Sensing Products
Published 2014-01-01“…The eigenpoints are located according to the á trous wavelet planes of the QRSP. Based on these concepts, this letter proposes an eigenpoint based multiscale method for validating the QRSPs. …”
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416
A New Improved Kurtogram and Its Application to Bearing Fault Diagnosis
Published 2015-01-01“…Instead of Kurtosis, correlated Kurtosis of envelope signal extracted from the wavelet packet node was used as an indicator to determine the optimal frequency band. …”
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417
Fatigue Damage Evolution and Monitoring of Carbon Fiber Reinforced Polymer Bridge Cable by Acoustic Emission Technique
Published 2012-10-01“…Finally, the failure types of AE waveform are extracted and analyzed using wavelet transformation. The AE technique proved to be a potential means for evaluating the fatigue damage characteristics of CFRP cables.…”
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418
DCA-Based Real-Time Residual Useful Life Prediction for Critical Faulty Component
Published 2017-01-01“…The innovation of this paper is as follows: (1) Wavelet filtering based method is developed for early detection of slowly varying fault. (2) Designated component analysis is introduced as a feature extraction tool to define the fault precursor of a specific component. (3) Exponential life prediction model is established by nonlinear fitting of the historical RUL and the fault size characterized by the statistics used. …”
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419
Compressed Sensing Based Fingerprint Identification for Wireless Transmitters
Published 2014-01-01“…A data acquisition system is designed to capture the wireless transmitter signals. Complex analytical wavelet transform is used to obtain the envelope of the transient signal, and the corresponding features are extracted by using the compressed sensing theory. …”
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420
The Partial Inner Product Space Method: A Quick Overview
Published 2010-01-01“…Many families of function spaces play a central role in analysis, in particular, in signal processing (e.g., wavelet or Gabor analysis). Typical are 𝐿𝑝 spaces, Besov spaces, amalgam spaces, or modulation spaces. …”
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