Results 41 to 50 of about 19,320 (310)

Consistency of detrended fluctuation analysis [PDF]

Physical 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

The 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, Cong Wang, Chuangye Li, Wei Dai   +3 more
doaj   +1 more source

Early Warning Signals for Bearing Failure Using Detrended Fluctuation Analysis

Applied 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]

Nonlinear 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, M. V. M. Mata, L. S. Lucena, U. L. Fulco, G. Corso   +4 more
doaj   +1 more source

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

International 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, César Silva, Paulo Ferreira   +2 more
doaj   +1 more source

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

Fractal 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, Nicodemo Abate, Farid Faridani, Michele Lovallo, Rosa Lasaponara   +4 more
doaj   +1 more source

A new method for abrupt change detection in dynamic structures [PDF]

Nonlinear Processes in Geophysics, 2008
Based on Detrended Fluctuation Analysis (DFA), we propose a new method – Moving Detrended Fluctuation Analysis (MDFA) – to detect abrupt change in dynamic structures.
W. P. He, G. L. Feng, Q. Wu, S. Q. Wan, J. F. Chou   +4 more
doaj  

Fractal Analysis of River Flow Fluctuations (with Erratum) [PDF]

, 2006
We use some fractal analysis methods to study river flow fluctuations. The result of the Multifractal Detrended Fluctuation Analysis (MF-DFA) shows that there are two crossover timescales at $s_{1\times}\sim12$ and $s_{2\times}\sim130$ months in the ...
Alados, Ashkenazy, Ashkenazy, Ashkenazy, Ashkenazy, Bacry, Bahar, Barabási, Barbosa, Barmes, Blesic, Buldyrev, Buldyrev, Buldyrev, Bunde, Bunde, Burlando, Burlando, Chen, Chen, Chianca, Eke, Evalds Hermanis, Fano, Feder, Feder, Fraedrich, Hausdorff, Hu, Hurst, Hurst, Ivanov, Ivanov, Ivanova, Ivanova, Kantelhardt, Kantelhardt, Kantelhardt, Kantelhardt, Koscielny-Bunde, Koscielny-Bunde, Koscielny-Bunde, Koscielny-Bunde, Koscielny-Bunde, Kroll, Liu, Livina, Livina, Loboda, M. Sadegh Movahed, Malamud, Mandelbrot, Mantegna, Matsoukas, Murdock, Muzy, Nagarajan, Ossadnik, Oświȩcimka, Pandey, Peitgen, Pelletier, Peng, Peng, Sadegh Movahed, Sadegh Movahed, Schmitt, Talkner, Taqqu, Tessier, Vandewalle, Vandewalle, Xu   +72 more
core   +2 more sources

Detrended fluctuation analysis for fractals and multifractals in higher dimensions

, 2006
One-dimensional detrended fluctuation analysis (1D DFA) and multifractal detrended fluctuation analysis (1D MF-DFA) are widely used in the scaling analysis of fractal and multifractal time series because of being accurate and easy to implement.
B. B. Mandelbrot, D. Maraun, E. Alessio, Gao-Feng Gu, H. E. Hurst, J. W. Kantelhardt, M. Holschneider, P. Grassberger, Wei-Xing Zhou   +8 more
core   +1 more source

Scaler mode of the Auger Observatory and Sunspots [PDF]

, 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, Bertou, Bray, Carlos A. García Canal, Carlos Hojvat, Hamilton, Jensen, MacDonald, Neutron Monitor APTY, Neutron Monitor Database, Neutron Monitor JUNG, Pierre Auger Observatory Collaboration, Press, SIDC-Team, Storini, Tatiana Tarutina   +15 more
core   +2 more sources