Results 41 to 50 of about 10,422 (231)

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

Study on Multiple Fractal Analysis and Response Characteristics of Acoustic Emission Signals from Goaf Rock Bodies

open access: yesSensors, 2022
Based on the actual monitoring data of the acoustic emission (AE) ground pressure monitoring and positioning system, this paper introduces fractal theory and the multifractal detrended fluctuation analysis (MF-DFA) method to estimate the waveform ...
Xuebin Xie, Shaoqian Li, Jiang Guo
doaj   +1 more source

Fractal scaling analysis of groundwater dynamics in confined aquifers [PDF]

open access: yesEarth System Dynamics, 2017
Groundwater closely interacts with surface water and even climate systems in most hydroclimatic settings. Fractal scaling analysis of groundwater dynamics is of significance in modeling hydrological processes by considering potential temporal long ...
T. Tu   +4 more
doaj   +1 more source

Dollar’s Influence on Crude Oil and Gold Based on MF-DPCCA Method

open access: yesDiscrete Dynamics in Nature and Society, 2021
This paper analyzed the influence of dollar on crude oil and gold based on the multifractal detrended partial cross-correlation analysis method. It showed that affected by the dollar, the crude oil and gold markets have a partial cross-correlation ...
Zhonghui Ding, Kai Shi, Bin Wang
doaj   +1 more source

A New Look at Calendar Anomalies: Multifractality and Day-of-the-Week Effect

open access: yesEntropy, 2022
Stock markets can become inefficient due to calendar anomalies known as the day-of-the-week effect. Calendar anomalies are well known in the financial literature, but the phenomena remain to be explored in econophysics.
Darko Stosic   +4 more
doaj   +1 more source

Multiscale Adaptive Multifractal Detrended Fluctuation Analysis-Based Source Identification of Synchrophasor Data

open access: yesIEEE Transactions on Smart Grid, 2022
As a typical cyber-physical system, dispersed Phasor Measurement Units (PMUs) are networked together with advanced communication infrastructures to record the Distribution Synchrophasor (DS) which represents the states and dynamics of distribution power ...
Yi Cui   +6 more
semanticscholar   +1 more source

Multifractal Characterization and Modeling of Blood Pressure Signals

open access: yesAlgorithms, 2022
In this paper, a multi-fractal analysis on a diastolic blood pressure signal is conducted. The signal is measured in a time span of circa one day through the multifractal detrended fluctuation analysis framework.
Enrico De Santis   +4 more
doaj   +1 more source

A Multifractal Description of Wind Speed Records [PDF]

open access: yes, 2004
In this paper, a systematic analysis of hourly wind speed data obtained from four potential wind generation sites in North Dakota is conducted. The power spectra of the data exhibited a power law decay characteristic of $1/f^{\alpha}$ processes with ...
Kavasseri, Rajesh G.   +1 more
core   +3 more sources

Multifractal Detrended Fluctuation Analysis (MF-DFA) of Stock Market Indexes. Empirical Evidence from Seven Central and Eastern European Markets

open access: yesSustainability, 2020
In this paper, we present a comparative investigation of the multifractal properties of seven Central and Eastern European (CEE) stock markets using recent financial data up to August 2018 by employing seasonal and trend decompositions before applying ...
L. Miloș   +4 more
semanticscholar   +1 more source

A probe into the behaviour of total ozone time series through multifractal detrended fluctuation analysis

open access: yesTheoretical and Applied Climatology, 2022
The present study reports a multifractal detrended fluctuation analysis (MF-DFA) of total ozone time series. Considering daily total ozone concentration (TOC) data ranging from 2015 to 2019, derived from Ozone Monitoring Instrument (OMI)/Aura ...
Sombit Chakraborty   +1 more
semanticscholar   +1 more source

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