Results 31 to 40 of about 456,367 (154)
Ensemble Improved Permutation Entropy: A New Approach for Time Series Analysis
Entropy, 2023 Entropy quantification approaches have gained considerable attention in engineering applications. However, certain limitations persist, including the strong dependence on parameter selection, limited discriminating power, and low robustness to noise.
Zhe Chen +3 more
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A noise-robust Multivariate Multiscale Permutation Entropy for two-phase flow characterisation [PDF]
, 2022 Using a graph-based approach, we propose a multiscale permutation entropy to explore the complexity of multivariate time series over multiple time scales.
Fabila-Carrasco, John Stewart +2 more
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Multivariate improved weighted multi-scale permutation entropy and its application on EEG data [PDF]
, 2019 International audienceThis paper introduces an entropy based method that measures complexity in non-stationary multivariate signals. This method, called Mutivariate Improved Weighted Multiscale Permutation Entropy (mvIWMPE), has two main advantages: (i ...
Siniatchkin, M. +7 more
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Measuring center of pressure signals to quantify human balance using multivariate multiscale entropy by designing a force platform [PDF]
, 2013 Copyright © 2013 by the authors. To assess the improvement of human body balance, a low cost and portable measuring device of center of pressure (COP), known as center of pressure and complexity monitoring system (CPCMS), has been developed for data ...
Huang, C-W +14 more
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Multiscale permutation entropy analysis of electroencephalogram
Acta Physica Sinica, 2014 We carried out a detailed analysis and a comparison between normal and epileptic electroencephalogram (EEG) based on multiscale permutation entropy. The relationship between multiscale permutation entropy values of EEG and age, and the effect of scale factor on multiscale permutation entropy value were also discussed.
null Yao Wen-Po +3 more
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Multiscale based nonlinear dynamics analysis of heart rate variability signals.
PLoS ONE, 2020 Acceleration change index (ACI) is a fast and easy to understand heart rate variability (HRV) analysis approach used for assessing cardiac autonomic control of the nervous systems.
Syed Zaki Hassan Kazmi +5 more
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Multiscale permutation entropy analysis of laser beam wandering in isotropic turbulence [PDF]
Physical Review E, 2017 We have experimentally quantified the temporal structural diversity from the coordinate fluctuations of a laser beam propagating through isotropic optical turbulence. The main focus here is on the characterization of the long-range correlations in the wandering of a thin Gaussian laser beam over a screen after propagating through a turbulent medium. To
Olivares, Felipe +4 more
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Entropy, 2021 Wind turbine gearboxes operate in harsh environments; therefore, the resulting gear vibration signal has characteristics of strong nonlinearity, is non-stationary, and has a low signal-to-noise ratio, which indicates that it is difficult to identify wind
Xiaoan Yan +3 more
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Shock and Vibration, 2019 The cracking of piezoelectric ceramics is the main reason of failure of an ultrasonic motor. Since the fault information is too weak to reflect the condition of piezoelectric ceramics especially in the early degradation stage, a fault feature extraction ...
Guoqing An, Hongru Li
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IET Science, Measurement & Technology, 2023 Faults in rolling bearings are usually observed through pulses in the vibration signals. However, due to the influence of complex background noise and interference from other machine components present in measurement equipment, vibration signals are ...
Li Liu, Zijin Liu, Xuefei Qian
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