Results 11 to 20 of about 1,681 (208)

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

open access: yesIEEE 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   +4 more
doaj   +3 more sources

EEG-ChTABNet: A Dual-Branch Channel-Wise Transformer with Gated Attention-Branch Network for EEG-Based Classification of Dementia [PDF]

open access: yesBiomedicines
Background/Objectives: Early and accurate discrimination of neurological conditions, dementia, stroke and healthy aging, remains a critical clinical challenge.
Noor Kamal Al-Qazzaz   +2 more
doaj   +2 more sources

Entropy-Based Uncertainty-Aware Exploratory Factor Analysis for Ordinal Data: Application to Tramway Cultural Tourism Evaluation [PDF]

open access: yesEntropy
Background: Perception-based evaluation using Likert-scale survey data is widely applied in tourism and transport research, yet conventional point-valued encoding imposes artificial precision and overlooks ambiguity between adjacent ordinal categories ...
Jiaozi Pu, Yaxin Shi
doaj   +2 more sources

Enhancing the LEACH protocol and lightweight chaotic cryptography for secure data transmission in wireless sensor networks [PDF]

open access: yesScientific Reports
Wireless sensor networks face significant challenges in achieving energy efficiency, prolonged network lifespan, and secure data transmission due to resource-constrained nodes and vulnerable wireless channels.
Mohsen Zarei   +3 more
doaj   +2 more sources

Forecasting of interval carbon price in China based on decomposition-reconstruction-ensemble framework [PDF]

open access: yesCarbon Balance and Management
Accurate prediction of carbon prices is imperative for the effective management of carbon markets and the facilitation of a global transition to green energy.
Beibei Hu, Yunhe Cheng
doaj   +2 more sources

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

open access: yesSensors, 2023
The utilization of multiscale entropy methods to characterize vibration signals has proven to be promising in intelligent diagnosis of mechanical equipment.
Zhengkun Xue   +4 more
doaj   +1 more source

A new fractional fuzzy dispersion entropy and its application in muscle fatigue detection

open access: yesMathematical Biosciences and Engineering, 2023
Abstract Background The complexity analysis of neuroelectrophysiological signals has been widely applied in the field of biomedical engineering and muscle fatigue detection using the complexity analysis of surface electromyographic (sEMG) signals is one of the hot research topics.
Baohua Hu, Yong Wang, Jingsong Mu
openaire   +3 more sources

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

A Robust and High-Dimensional Clustering Algorithm Based on Feature Weight and Entropy

open access: yesEntropy, 2023
Since the Fuzzy C-Means algorithm is incapable of considering the influence of different features and exponential constraints on high-dimensional and complex data, a fuzzy clustering algorithm based on non-Euclidean distance combining feature weights and
Xinzhi Du
doaj   +1 more source

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