Results 31 to 40 of about 389,267 (294)

Fault Diagnosis of Hydraulic Pumps Using PSO-VMD and Refined Composite Multiscale Fluctuation Dispersion Entropy

open access: yesShock and Vibration, 2020
Multiscale fluctuation dispersion entropy (MFDE) has been proposed to measure the dynamic features of complex signals recently. Compared with multiscale sample entropy (MSE) and multiscale fuzzy entropy (MFE), MFDE has higher calculation efficiency and ...
Fuming Zhou   +3 more
doaj   +1 more source

Multiscale permutation entropy for two-dimensional patterns

open access: yesPattern Recognition Letters, 2021
Abstract Complexity measures are important to understand and analyze systems with one dimensional data. However, extension of these methods to images (two dimensional data) are much less usual. Bidimensional multiscale sample entropy ( M S E 2 D ) has recently been proposed as a new complexity measure for texture evaluation. However,
Morel, Cristina, Humeau-Heurtier, Anne
openaire   +2 more sources

Bearing Fault Diagnosis Using Refined Composite Generalized Multiscale Dispersion Entropy-Based Skewness and Variance and Multiclass FCM-ANFIS

open access: yesEntropy, 2021
Bearing vibration signals typically have nonlinear components due to their interaction and coupling effects, friction, damping, and nonlinear stiffness. Bearing faults affect the signal complexity at various scales.
Mostafa Rostaghi   +3 more
doaj   +1 more source

Entropy of Proteins Using Multiscale Cell Correlation [PDF]

open access: yesJournal of Chemical Information and Modeling, 2020
A new multiscale method is presented to calculate the entropy of proteins from molecular dynamics simulations. Termed Multiscale Cell Correlation (MCC), the method decomposes the protein into sets of rigid-body units based on their covalent-bond connectivity at three levels of hierarchy: molecule, residue, and united atom.
Arghya Chakravorty   +2 more
openaire   +4 more sources

Analysis of electroencephalograms in Alzheimer's disease patients with multiscale entropy [PDF]

open access: yes, 2006
The aim of this study was to analyse the electroencephalogram ( EEG) background activity of Alzheimer's disease ( AD) patients using multiscale entropy (MSE). MSE is a recently developed method that quantifies the regularity of a signal on different time
Escudero, J.; id_orcid   +9 more
core   +1 more source

Multiscale entropy algorithms and their applications in cardiac disease discrimination

open access: yes, 2020
In recent years, the number of cardiac disease patients has been increasing. Modern medical research has shown that the complexity of electrocardiogram (ECG) signals is related to cardiovascular diseases.
Jin, Zhiyao   +4 more
core   +1 more source

Approximate entropy and auto mutual information analysis of the electroencephalogram in Alzheimer's disease patients [PDF]

open access: yes, 2008
We analysed the electroencephalogram (EEG) from Alzheimer's disease (AD) patients with two nonlinear methods: approximate entropy (ApEn) and auto mutual information (AMI).
Gomez, C.   +4 more
core   +1 more source

Image-based Multiscale Shape Description using Gaussian Filter [PDF]

open access: yes, 2008
In shape recognition, a multiscale description provides more information about the object, increases discrimination power and immunity to noise. In this paper, we develop a new multiscale Fourier-based object description in 2-D space using a low-pass ...
Cem Direkoglu   +3 more
core   +2 more sources

Changes in the Complexity of Heart Rate Variability with Exercise Training Measured by Multiscale Entropy-Based Measurements

open access: yesEntropy, 2018
Quantifying complexity from heart rate variability (HRV) series is a challenging task, and multiscale entropy (MSE), along with its variants, has been demonstrated to be one of the most robust approaches to achieve this goal.
Frederico Sassoli Fazan   +4 more
doaj   +1 more source

Multiscale based nonlinear dynamics analysis of heart rate variability signals.

open access: yesPLoS 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
doaj   +1 more source

Home - About - Disclaimer - Privacy