Results 21 to 30 of about 411,209 (289)

Entropy and Entropy Production in Multiscale Dynamics [PDF]

Journal of Non-Equilibrium Thermodynamics, 2019
Abstract Heat conduction is investigated on three levels: equilibrium, Fourier, and Cattaneo. The Fourier level is either the point of departure for investigating the approach to equilibrium or the final stage in the investigation of the approach from the Cattaneo level.
Grmela, Miroslav, Pavelka, Michal, Klika, Vaclav, Cao, Bing-Yang, Bendian, Nie   +4 more
openaire   +2 more sources

Refined Composite Multivariate Multiscale Fractional Fuzzy Entropy: Measuring the Dynamical Complexity of Multichannel Financial Data

Complexity, 2021
Refined composite multivariate multiscale fractional fuzzy entropy (RCmvMFFE), which aims to sensitively discriminate different short noisy multichannel financial data, is proposed as a new measure to quantify the complexity dynamics of multichannel time
Huiqin Chu, Zhiyong Wu, Wei Zhang
doaj   +1 more source

High complexity measured by multiscale entropy.

, 2022
High complexity measured by multiscale entropy.
E. R. Anirudh (12769992), R. Sivakumar (9265), Sai Viswanth Reddy Y. (12769995), Rahul Soangra (12769989), Emmanuel B. John (12769998)   +4 more
core   +1 more source

Application of Generalized Composite Multiscale Lempel–Ziv Complexity in Identifying Wind Turbine Gearbox Faults

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, Daoming She, Yadong Xu, Minping Jia   +3 more
doaj   +1 more source

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, Jiang, BC, Shieh, J-S, Sue, PD, Maysam F. Abbod, Bernard Jiang, Jiann-Shing Shieh, Huang, CW, Maysam Abbod, Pei-Der Sue, Shieh, JS, Abbod, MF, Bernard C. Jiang, Cheng-Wei Huang, Sue, P-D   +14 more
core   +1 more source

Gearbox Fault Diagnosis Based on Refined Time-Shift Multiscale Reverse Dispersion Entropy and Optimised Support Vector Machine

Machines, 2023
The fault diagnosis of a gearbox is crucial to ensure its safe operation. Entropy has become a common tool for measuring the complexity of time series. However, entropy bias may occur when the data are not long enough or the scale becomes larger.
Xiang Wang, Han Jiang
doaj   +1 more source

Multiscale Mesoscopic Entropy of Driven Macroscopic Systems [PDF]

Entropy, 2013
How do macroscopic systems react to imposed external forces? Attempts to answer this question by a general principle have a long history. The general feeling is that the macroscopic systems in their reaction to imposed external forces follow some kind of optimization strategy in which their internal structure is changed so that they offer the least ...
Miroslav Grmela, Giuseppe Grazzini, Umberto Lucia, L'Hocine Yahia   +3 more
openaire   +2 more sources

Variable-Step Multiscale Fuzzy Dispersion Entropy: A Novel Metric for Signal Analysis

Entropy, 2023
Fuzzy dispersion entropy (FuzDE) is a newly proposed entropy metric, which combines the superior characteristics of fuzzy entropy (FE) and dispersion entropy (DE) in signal analysis.
Yuxing Li, Junxian Wu, Shuai Zhang, Bingzhao Tang, Yilan Lou   +4 more
doaj   +1 more source

Multivariate refined composite multiscale entropy analysis [PDF]

, 2016
Multiscale entropy (MSE) has become a prevailing method to quantify signals complexity. MSE relies on sample entropy. However, MSE may yield imprecise complexity estimation at large scales, because sample entropy does not give precise estimation of ...
A. Humeau-Heurtier, Humeau-Heurtier, Anne   +1 more
core   +1 more source

List of base, cross, bidimensional, multiscale and multiscale cross-entropy functions available in version 0.1 of the EntropyHub toolkit.

, 2021
List of base, cross, bidimensional, multiscale and multiscale cross-entropy functions available in version 0.1 of the EntropyHub toolkit.
Bernd Grimm (11648640), Matthew W. Flood (11648637)   +1 more
core   +1 more source