Results 31 to 40 of about 807,113 (273)

Hierarchical Multiscale Fluctuation Dispersion Entropy for Fuel Injection System Fault Diagnosis

open access: yesPolish Maritime Research, 2023
Marine electronically controlled (ME) two-stroke diesel engines occupy the highest market share in newly-built ships and its fuel injection system is quite different and important.
Shi Qingguo, Hu Yihuai, Yan Guohua
doaj   +1 more source

Single Feature Extraction Method of Bearing Fault Signals Based on Slope Entropy

open access: yesShock and Vibration, 2022
As an entropy representing the complexity of sequence, slope entropy (SloE) is applied to feature extraction of bearing signal for the first time. With the advantage of slope entropy in feature extraction, the effectiveness of bearing fault signal ...
Erna Shi
doaj   +1 more source

Comparative Study on Feature Extraction of Marine Background Noise Based on Nonlinear Dynamic Features

open access: yesEntropy, 2023
Marine background noise (MBN) is the background noise of the marine environment, which can be used to invert the parameters of the marine environment. However, due to the complexity of the marine environment, it is difficult to extract the features of ...
Guanni Ji, Yu Wang, Fei Wang
doaj   +1 more source

Hierarchical dispersion entropy and its application in fault diagnosis of rolling bearing [PDF]

open access: yes, 2022
Aiming at the disadvantage that multi-scale entropy only analyzes the low-frequency components of time series, this paper proposes a rolling bearing fault feature extraction method based on hierarchical dispersion entropy (HDE).
Chen, Yang, Chen, Yongqi, Zhang, Tao
core   +1 more source

Multi-Abnormal ECG Signal Classification using Dispersion Entropy and Statistic Feature

open access: yesJurnal Elkomika, 2022
ABSTRAK Elektrokardiogram (EKG) adalah salah satu perangkat medis yang paling banyak digunakan untuk mendiagnosis masalah jantung. Sinyal abnorma EKG mempunyai variasi dan beberapa mirip antara yang satu dengan lainnya.
ERVIN MASITA DEWI   +2 more
doaj   +1 more source

On the dispersion of entropy waves in turbulent flows [PDF]

open access: yesJournal of Fluid Mechanics, 2020
Abstract
Markus Weilenmann   +2 more
openaire   +2 more sources

Transplanckian dispersion relation and entanglement entropy of blackhole [PDF]

open access: yesFortschritte der Physik, 2004
AbstractThe quantum correction to the entanglement entropy of the event horizon is plagued by the UV divergence due to the infinitely blue‐shifted near horizon modes. The resolution of this UV divergence provides an excellent window to a better understanding and control of the quantum gravity effects.
Chang, Darwin   +2 more
openaire   +2 more sources

Normal Cumulative Distribution Function and Dispersion Entropy Based EMG Classification

open access: yesSakarya University Journal of Computer and Information Sciences, 2020
Electromyography (EMG) is used to measure muscle activity. EMG signals are widely used in many biomedical practices such as motion recognition, prosthetic control, physical rehabilitation, and human-computer interfaces.
Muzaffer Aslan
doaj   +1 more source

Application of Dispersion Entropy for the Detection of Emotions With Electroencephalographic Signals

open access: yesIEEE Transactions on Cognitive and Developmental Systems, 2022
The interest in the application of nonlinear method ologies for the analysis of EEG signals for automatic recognition of emotions has increased notably. A vast number of studies in the research field of emotions detection have focused on the identification of the four quadrants of the valence-arousal emotional model.
Beatriz Garcia-Martinez   +3 more
openaire   +2 more sources

Insights into Entropy as a Measure of Multivariate Variability

open access: yesEntropy, 2016
Entropy has been widely employed as a measure of variability for problems, such as machine learning and signal processing. In this paper, we provide some new insights into the behaviors of entropy as a measure of multivariate variability.
Badong Chen   +3 more
doaj   +1 more source

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