Results 41 to 50 of about 18,134 (280)

Fractal Analysis of Power Grid Faults and Cross Correlation for the Faults and Meteorological Factors

open access: yesIEEE Access, 2020
Power-grid faults pose a great threat to the economy and to social stability. In this paper, the detrended fluctuation analysis method is used to investigate the scaling properties of power grid faults and the correlation between faults and ...
Tejun Zhou   +3 more
doaj   +1 more source

Consistency of detrended fluctuation analysis [PDF]

open access: yesPhysical Review E, 2017
The scaling function $F(s)$ in detrended fluctuation analysis (DFA) scales as $F(s)\sim s^{H}$ for stochastic processes with Hurst exponents $H$. We prove this scaling law for both stationary stochastic processes with $01$. As a final application of the new theory, we present an estimator $\hat F(s)$ that can handle missing data in regularly sampled ...
openaire   +3 more sources

Multi-fractal detrended fluctuation half-spectrum analysis of HRV

open access: yesThe Journal of Engineering, 2019
Electrocardiogram is a comprehensive reflection of cardiac electrical activity on the surface of the body. It is of great research value to analyse ECG signals and diagnose heart diseases.
Daoming Zhang   +3 more
doaj   +1 more source

Quantitative ECG based emotion state recognition using Detrended Fluctuation Analysis

open access: yesCurrent Directions in Biomedical Engineering, 2023
Wearable emotion recogniton system is essential in identifying mental health disorders by early detection and continuous monitoring of human emotions to provide proper treatment care.
Anandan Meena   +2 more
doaj   +1 more source

Early Warning Signals for Bearing Failure Using Detrended Fluctuation Analysis

open access: yesApplied Sciences, 2020
Prognostic techniques play a critical role in predicting upcoming faults and failures in machinery or a system by monitoring any deviation in the operation.
Laith Shalalfeh, Ashraf AlShalalfeh
doaj   +1 more source

Spatial analysis of oil reservoirs using detrended fluctuation analysis of geophysical data [PDF]

open access: yesNonlinear Processes in Geophysics, 2014
We employ the detrended fluctuation analysis (DFA) technique to investigate spatial properties of an oil reservoir. This reservoir is situated at Bacia de Namorados, RJ, Brazil.
R. A. Ribeiro   +4 more
doaj   +1 more source

Long-Range Behaviour and Correlation in DFA and DCCA Analysis of Cryptocurrencies

open access: yesInternational Journal of Financial Studies, 2019
In recent years, increasing attention has been devoted to cryptocurrencies, owing to their great development and valorization. In this study, we propose to analyse four of the major cryptocurrencies, based on their market capitalization and data ...
Natália Costa   +2 more
doaj   +1 more source

Multifractal detrended fluctuation analysis of nonstationary time series [PDF]

open access: yes, 2002
We develop a method for the multifractal characterization of nonstationary time series, which is based on a generalization of the detrended fluctuation analysis (DFA).
Alados   +50 more
core   +2 more sources

Discerning Xylella fastidiosa-Infected Olive Orchards in the Time Series of MODIS Terra Satellite Evapotranspiration Data by Using the Fisher–Shannon Analysis and the Multifractal Detrended Fluctuation Analysis

open access: yesFractal and Fractional, 2023
Xylella fastidiosa is a phytobacterium able to provoke severe diseases in many species. When it infects olive trees, it induces the olive quick decline syndrome that leads the tree to a rapid desiccation and then to the death.
Luciano Telesca   +4 more
doaj   +1 more source

Scaler mode of the Auger Observatory and Sunspots [PDF]

open access: yes, 2012
Recent data from the Auger Observatory on low energy secondary cosmic ray particles are analyzed to study temporal correlations together with data on the daily sunspot numbers and neutron monitor data.
Auger Scaler Data Online   +15 more
core   +2 more sources

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