Results 21 to 30 of about 807,113 (273)

Refined Composite Multivariate Multiscale Dispersion Entropy and Its Application to Fault Diagnosis of Rolling Bearing

IEEE Access, 2019
Many nonlinear dynamic and statistic methods, including multiscale sample entropy (MSE) and multiscale fuzzy entropy (MFE), have been widely studied and employed to fault diagnosis of the rolling bearing. Multiscale dispersion entropy (MDE) is a powerful
Congzhi Li, Jinde Zheng, Haiyang Pan, Jinyu Tong, Yifang Zhang   +4 more
doaj   +3 more sources

Multiscale Fluctuation-Based Dispersion Entropy and Its Applications to Neurological Diseases

IEEE Access, 2019
Fluctuation-based dispersion entropy (FDispEn) is a new approach to estimate the dynamical variability of the fluctuations of signals. It is based on Shannon entropy and fluctuation-based dispersion patterns.
Hamed Azami, Steven E. Arnold, Saeid Sanei, Zhuoqing Chang, Guillermo Sapiro, Javier Escudero, Anoopum S. Gupta   +6 more
doaj   +3 more sources

Atomic Dispersion via High‐Entropy Liquid Metal Alloys [PDF]

Small Structures
Gallium‐based liquid metal alloys exhibit unconventional and intriguing properties as metallic solvents, demonstrating an exceptional potential to dissolve and reconfigure a vast array of elements within the liquid metal matrix.
Francois‐Marie Allioux, Sahar Nazari, Mohammad B. Ghasemian, Ali Zavabeti, Zengxia Pei, Josh Leverett, Somayeh Rafiezadeh, Amar K. Salih, Curtis P. Irvine, Mahroo Baharfar, Laetitia Bardet, Moonika S. Widjajana, Yuan Chi, Dorna Esrafilzadeh, Ali R. Jalili, Nima Haghdadi, Jianbo Tang, Kevin J. Laws, Cuong Ton‐That, Torben Daeneke, Rahman Daiyan, Md Arifur Rahim, Kourosh Kalantar‐Zadeh   +22 more
doaj   +5 more sources

Fault Diagnosis of Gearbox Multi-channel Vibration Signal based on Improved Multivariate Multiscale Dispersion Entropy

Jixie chuandong, 2021
When the gearbox fails， its vibration signal is unstable and nonlinear. The commonly applied gearbox fault diagnosis methods are almost all based on the single-channel vibration signal analysis，which is easy to cause the loss of fault information，so the ...
Fuming Zhou, Jinxing Shen, Xiaoqiang Yang, Wuqiang Liu, Xiaolin Liu   +4 more
doaj   +2 more sources

Intelligent Fault Diagnosis of Rolling Bearings Based on a Complete Frequency Range Feature Extraction and Combined Feature Selection Methodology

Sensors, 2023
The utilization of multiscale entropy methods to characterize vibration signals has proven to be promising in intelligent diagnosis of mechanical equipment.
Zhengkun Xue, Yukun Huang, Wanyang Zhang, Jinchuan Shi, Huageng Luo   +4 more
doaj   +1 more source

Reverse Dispersion Entropy: A New Complexity Measure for Sensor Signal [PDF]

Sensors, 2019
Yuxing Li
exaly   +2 more sources

NC MACHINE FAULT DIGNOSIS BADED ON LCD MULTI DISPERSION ENTROPY

Jixie qiangdu, 2019
In order to improve fault diagnosis effect of bearing used in NC machine, a fault feature extraction and diagnosis method of bearing based on LCD multi dispersion entropy was proposed.
LI MeiHong
doaj   +2 more sources

Double Feature Extraction Method of Ship-Radiated Noise Signal Based on Slope Entropy and Permutation Entropy

Entropy, 2021
In order to accurately identify various types of ships and develop coastal defenses, a single feature extraction method based on slope entropy (SlEn) and a double feature extraction method based on SlEn combined with permutation entropy (SlEn&PE) are ...
Yuxing Li, Peiyuan Gao, Bingzhao Tang, Yingmin Yi, Jianjun Zhang   +4 more
doaj   +1 more source

Information Entropy as a Reliable Measure of Nanoparticle Dispersity [PDF]

Chemistry of Materials, 2020
Abstract Nanoparticle size impacts properties vital to applications ranging from drug delivery to diagnostics and catalysis. As such, evaluating nanoparticle size dispersity is of fundamental importance. Conventional approaches, such as standard deviation, usually require the nanoparticle population to follow a known distribution and ...
Niamh Mac Fhionnlaoich, Stefan Guldin
openaire   +4 more sources

Text Entropy as Dispersion of Meaning

Vestnik of Northern (Arctic) Federal University. Series Humanitarian and Social Sciences, 2023
This article analyses the entropy of the language system in general and text entropy in particular. Based on the study of entropy in linguistics, the authors aim to substantiate the concept of text entropy and describe the process of chronotopic translation.
Larisa E. Il’ina, Ol’ga E. Pavlovskaya   +1 more
openaire   +1 more source