Results 21 to 30 of about 3,443,010 (236)

Novel QRS Detection Based on the Adaptive Improved Permutation Entropy

, 2022
we propose a novel QRS detection algorithm based on a new Permutation Entropy (PE) method that we developed and referred to as the Adaptive Improved Permutation Entropy (AIPE) method. The parameters of the AIPE method are determined based on the specific
Hung Cao (9078581), Sadaf Sarafan (12568120), Tadesse Ghirmai (12568134), Farah Torkamani Azar (11308815), Nastaran Mansourian (12565972)   +4 more
core   +1 more source

Multivariate improved weighted multi-scale permutation entropy and its application on EEG data [PDF]

, 2019
This paper introduces an entropy based method that measures complexity in non-stationary multivariate signals. This method, called Mutivariate Improved Weighted Multiscale Permutation Entropy (mvIWMPE), has two main advantages: (i) it shows lower ...
N. Jrad, A. Humeau-Heurtier, P. Van Bogaert, N.E. Kadish, N. Japaridze, M. Siniatchkin, M.A. Colominas, M. El Sayed Hussein Jomaa   +7 more
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Fault Diagnosis of Hydroelectric Units Based on a Novel Multiscale Fractional-Order Weighted Permutation Entropy

Fractal and Fractional, 2022
To improve the noise immunity, stability and sensitivity to different signal types in the hydroelectric unit fault diagnosis model, a hydroelectric unit fault diagnosis model based on improved multiscale fractional-order weighted permutation entropy ...
Wenjing Zhang, Yuanchen Gao, Shizhe Peng, Dongdong Zhou, Bin Wang   +4 more
doaj   +1 more source

Permutation Entropy for the Characterisation of Brain Activity Recorded with Magnetoencephalograms in Healthy Ageing [PDF]

, 2019
The characterisation of healthy ageing of the brain could help create a fingerprint of normal ageing that might assist in the early diagnosis of neurodegenerative conditions. This study examined changes in resting state MEG permutation entropy due to age
Shumbayawonda, Elizabeth, Fernández, A, Hughes, Michael, Abasolo, Daniel Emilio   +3 more
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Monitoring Autonomic and Central Nervous System Activity by Permutation Entropy during Short Sojourn in Antarctica

, 2019
The aim of this study was to monitor acute response patterns of autonomic and central nervous system activity during an encounter with Antarctica by synchronously recording heart rate variability (HRV) and electroencephalography (EEG). On three different
DURU, ADİL DENİZ, ÇOTUK, HASAN BİROL
core   +2 more sources

Biological Tissue Damage Monitoring Method Based on IMWPE and PNN during HIFU Treatment

Information, 2021
Biological tissue damage monitoring is an indispensable part of high-intensity focused ultrasound (HIFU) treatment. As a nonlinear method, multi-scale permutation entropy (MPE) is widely used in the monitoring of biological tissue.
Bei Liu, Xian Zhang, Xiao Zou, Jing Cao, Ziqi Peng   +4 more
doaj   +1 more source

Gearbox Fault Diagnosis Method Based on Improved Multi-Scale Mean Permutation Entropy and Parameter Optimization SVM

Jixie chuandong, 2023
When a gearbox transmission system fails, the multi-scale mean permutation entropy (MMPE) of different vibration signals corresponds to the fault state to a certain extent.
Guo Panpan, Zhang Wenbin, Cui Ben, Xu Han   +3 more
doaj  

Security Analysis and Improvement of an Image Encryption Cryptosystem Based on Bit Plane Extraction and Multi Chaos

Entropy, 2021
This paper analyzes the security of image encryption systems based on bit plane extraction and multi chaos. It includes a bit-level permutation for high, 4-bit planes and bit-wise XOR diffusion, and finds that the key streams in the permutation and ...
Shuqin Zhu, Congxu Zhu
doaj   +1 more source

Mechanical Fault Diagnosis of High Voltage Circuit Breakers Based on Phase Space Reconstruction and Improved GSA-SVM

Zhongguo dianli, 2021
The vibration signals generated by transmission and impact of circuit breaker mechanical components have chaotic characteristics, which are difficult to be analyzed with conventional signal processing methods.
Xiaofei XIA, Yufeng LU, Yi SU, Jian YANG
doaj   +1 more source

Permutation inference for the general linear model [PDF]

, 2014
Permutation methods can provide exact control of false positives and allow the use of non-standard statistics, making only weak assumptions about the data.
Winkler, Anderson, Ridgway, Gerard, Nichols, Thomas E, Smith, Stephen, Webster, Matthew A, Nichols, Thomas E., Smith, Stephen M, Smith, Stephen M., Ridgway, Gerard R, Winkler, Anderson M., Webster, Matthew A., Ridgway, Gerard R., Webster, MA, Nichols, TE   +13 more
core   +1 more source