Results 21 to 30 of about 695 (126)

Recurrence quantification analysis provides the link between age-related decline in motor brain response and complexity of the baseline EEG [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2021
The goal of the present study is to investigate the effect of healthy aging on the neuronal mechanisms supporting human brain activity during motor task performance. Such biomarkers of the age-related changes can be detected using mathematical methods of
Pitsik, Elena N
doaj   +1 more source

Nondestructive evaluation on fatigue damage of pure iron based on critically refracted longitudinal wave combined with recurrence quantification analysis

open access: yesCailiao gongcheng, 2022
Nondestructive evaluation on fatigue damage of metallic materials with ultrasound is important to ensure the load-bearing capability and in-service reliability of high-performance components.The fatigue damage of industrial pure iron was studied, and a ...
MENG Yiyuan   +4 more
doaj   +1 more source

A Nonlinear Method for Characterizing Discrete Defects in Thick Multilayer Composites

open access: yesApplied Sciences, 2019
Discrete defects in thick composites are difficult to detect for the small size and the structure noise that appears in multilayer composites. In this paper, a nonlinear method, called recurrence analysis, has been used for characterizing discrete ...
Guoyang Teng   +3 more
doaj   +1 more source

RCOVID19: Recurrence-based SARS-CoV-2 features using chaos game representation

open access: yesData in Brief, 2020
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the COVID-19 pandemic. It was first detected in China and was rapidly spread to other countries.
Mohammad Hossein Olyaee   +3 more
doaj   +1 more source

A Differential Biomarker Based on Recurrence Quantification Analysis of EEG Signal and Genetic Algorithm for Epilepsy Diagnosis [PDF]

open access: yesJournal of Artificial Intelligence and System Modelling
Selecting features with strong discriminatory capabilities is crucial for data classification challenges. Recurrence Quantification Analysis (RQA) is a promising technique for detecting seizures without assuming stationary conditions, accommodating ...
Vanithamani Palanisamy   +2 more
doaj   +1 more source

Improving the understanding of sleep apnea characterization using Recurrence Quantification Analysis by defining overall acceptable values for the dimensionality of the system, the delay, and the distance threshold. [PDF]

open access: yesPLoS ONE, 2018
Our contribution focuses on the characterization of sleep apnea from a cardiac rate point of view, using Recurrence Quantification Analysis (RQA), based on a Heart Rate Variability (HRV) feature selection process.
Sofía Martín-González   +4 more
doaj   +1 more source

A New Process Monitoring Method Based on Waveform Signal by Using Recurrence Plot

open access: yesEntropy, 2015
Process monitoring is an important research problem in numerous areas. This paper proposes a novel process monitoring scheme by integrating the recurrence plot (RP) method and the control chart technique.
Cheng Zhou, Weidong Zhang
doaj   +1 more source

Nonlinear analysis of gravitational wave signals based on recurrence quantification analysis

open access: yesMATEC Web of Conferences, 2018
Recurrence plot and recurrence quantification analysis are used to analyze different features of gravitational wave signals. Firstly, the appropriate delay time and embedding dimension are respectively estimated by methods of the C_C method.
Fan Zhenyan   +4 more
doaj   +1 more source

Analyzing Multivariate Dynamics Using Cross-Recurrence Quantification Analysis (CRQA), Diagonal-Cross-Recurrence Profiles (DCRP), and Multidimensional Recurrence Quantification Analysis (MdRQA) – A Tutorial in R

open access: yesFrontiers in Psychology, 2018
This paper provides a practical, hands-on introduction to cross-recurrence quantification analysis (CRQA), diagonal cross-recurrence profiles (DCRP), and multidimensional recurrence quantification analysis (MdRQA) in R.
Sebastian Wallot, Giuseppe Leonardi
doaj   +1 more source

Recurrence quantification analysis for fine-scale characterisation of arrhythmic patterns in cardiac tissue

open access: yesScientific Reports, 2023
This paper uses recurrence quantification analysis (RQA) combined with entropy measures and organization indices to characterize arrhythmic patterns and dynamics in computer simulations of cardiac tissue.
Radek Halfar   +3 more
doaj   +1 more source

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