Results 11 to 20 of about 629 (156)
Neuronal oscillatory imbalances in GNAO1-related disorders associated with disease severity. [PDF]
EpilepsiaAbstract Objective This study investigates excitatory/inhibitory (E/I) imbalances in GNAO1‐related disorders (GNAO1‐RD), linking neuronal dysfunction to clinical severity using E/I‐sensitive electroencephalography (EEG) analyses. Methods We conducted an observational study involving 12 children with GNAO1‐RD caused by pathogenic variants and 36 age ...
Wang T +8 more
europepmc +2 more sources
Asymmetric market efficiency of the Eurozone using the MF-DFA: a comparison between global financial crisis and COVID-19 era [PDF]
European Journal of Management and Business Economics, 2023 PurposeThis research paper aims to explore asymmetric market efficiency of the 13 Euro countries, i.e. Austria, Belgium, Finland, France, Germany, Greece, Ireland, Italy, Netherland, Portugal, Slovakia, Slovenia and Spain, concerning the period before ...
Sajid Ali +2 more
doaj +1 more source
Jixie chuandong, 2014 The fault signal of the gearbox is the complex signal of the non-stationary and nonlinear characteristics,by using the multifractal detrended fluctuation analysis（MF-DFA）and the support vector machine（SVM）to diagnose the fault of the gearbox.The ...
刘春林 +3 more
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Influence of Sub-Daily Variation on Multi-Fractal Detrended Fluctuation Analysis of Wind Speed Time Series. [PDF]
PLoS ONE, 2016 Using multi-fractal detrended fluctuation analysis (MF-DFA), the scaling features of wind speed time series (WSTS) could be explored. In this paper, we discuss the influence of sub-daily variation, which is a natural feature of wind, in MF-DFA of WSTS ...
Xianxun Wang +4 more
doaj +1 more source
Entropy, 2021 Estimates suggest that more than 70% of the world’s rangelands are degraded. The Normalized Difference Vegetation Index (NDVI) is commonly used by ecologists and agriculturalists to monitor vegetation and contribute to more sustainable rangeland ...
Ernesto Sanz +8 more
doaj +1 more source
Time-Varying Fractal Analysis of Exchange Rates
Chaos Theory and Applications, 2023 The foreign exchange (forex) market is a dynamic and complex financial arena where the exchange rates of various currency pairs fluctuate continuously. Among these currency pairs, EUR/TRY and USD/TRY hold significant economic relevance due to their roles
Baki Ünal
doaj +1 more source
Robust detection of ionospheric scintillations using MF-DFA technique [PDF]
Earth, Planets and Space, 2015 The performance of Global Navigation Satellite System (GNSS) receivers is limited by the ionospheric scintillation effects that cause signal degradation due to refraction, reflection and scattering of the signals. Hence, there is a need to develop an ionospheric scintillation detection technique for robust GNSS receivers. In this paper, a new algorithm
Miriyala, Sridhar +2 more
openaire +1 more source
Fractal scaling analysis of groundwater dynamics in confined aquifers [PDF]
Earth 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
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Objective differentiation of neonatal EEG background grades using detrended fluctuation analysis
Frontiers in Human Neuroscience, 2015 A quantitative and objective assessment of background electroencephalograph (EEG) in sick neonates remains an everyday clinical challenge. We studied whether long range temporal correlations quantified by detrended fluctuation analysis (DFA) could be ...
Vladimir eMatic +12 more
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Complexity, 2022 We empirically analyze the impact of economic uncertainty due to the COVID-19 pandemic on the trading volume of each sector in the S&P 500 index. Wavelet coherence analysis is carried out using economic policy uncertainty data and the trading volume of ...
Dohyun Pak, Sun-Yong Choi
doaj +1 more source