Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Oswiecimka, P."'
Publikováno v:
CHAOS: An Interdisciplinary Journal of Nonlinear Science; in print, October 2024
An efficient method of exploring the effects of anisotropy in the fractal properties of 2D surfaces and images is proposed. It can be viewed as a direction-sensitive generalization of the multifractal detrended fluctuation analysis (MFDFA) into 2D. I
Externí odkaz:
http://arxiv.org/abs/2410.03541
Autor:
Wątorek, Marcin, Tomczyk, Wojciech, Gawłowska, Magda, Golonka-Afek, Natalia, Żyrkowska, Aleksandra, Marona, Monika, Wnuk, Marcin, Słowik, Agnieszka, Ochab, Jeremi K., Fafrowicz, Magdalena, Marek, Tadeusz, Oświęcimka, Paweł
Publikováno v:
Biomedical Signal Processing and Control 91, 105916 (2024)
Quantifying the complex/multifractal organization of the brain signals is crucial to fully understanding the brain processes and structure. In this contribution, we performed the multifractal analysis of the electroencephalographic (EEG) data obtaine
Externí odkaz:
http://arxiv.org/abs/2401.08321
Publikováno v:
Scientific Reports 13: 12341 (2023)
This paper addresses the question of the brain's critical dynamics after an injury such as a stroke. It is hypothesized that the healthy brain operates near a phase transition (critical point), which provides optimal conditions for information transm
Externí odkaz:
http://arxiv.org/abs/2307.14099
Publikováno v:
Physical Review E 107, 034139 (2023)
Based on the mathematical arguments formulated within the Multifractal Detrended Fluctuation Analysis (MFDFA) approach it is shown that in the uncorrelated time series from the Gaussian basin of attraction the effects resembling multifractality asymp
Externí odkaz:
http://arxiv.org/abs/2211.00728
Autor:
Ochab, Jeremi K., Wątorek, Marcin, Ceglarek, Anna, Fąfrowicz, Magdalena, Lewandowska, Koryna, Marek, Tadeusz, Sikora-Wachowicz, Barbara, Oświęcimka, Paweł
Publikováno v:
Sci Rep 12, 17866 (2022)
We applied detrended fluctuation analysis, power spectral density, and eigenanalysis of detrended cross-correlations to investigate fMRI data representing a diurnal variation of working memory in four visual tasks: two verbal and two nonverbal. We sh
Externí odkaz:
http://arxiv.org/abs/2209.13297
Autor:
Wątorek, Marcin, Drożdż, Stanisław, Kwapień, Jarosław, Minati, Ludovico, Oświęcimka, Paweł, Stanuszek, Marek
Publikováno v:
Physics Reports 901 1-82 (2021)
The review introduces the history of cryptocurrencies, offering a description of the blockchain technology behind them. Differences between cryptocurrencies and the exchanges on which they are traded have been shown. The central part surveys the anal
Externí odkaz:
http://arxiv.org/abs/2010.15403
Publikováno v:
Entropy 22, 1043 (2020)
Social systems are characterized by an enormous network of connections and factors that can influence the structure and dynamics of these systems. All financial markets, including the cryptocurrency market, belong to the economical sphere of human ac
Externí odkaz:
http://arxiv.org/abs/2009.10030
Autor:
Oświęcimka, Paweł, Drożdż, Stanisław, Frasca, Mattia, Gębarowski, Robert, Yoshimura, Natsue, Zunino, Luciano, Minati, Ludovico
The robustness of two widespread multifractal analysis methods, one based on detrended fluctuation analysis and one on wavelet leaders, is discussed in the context of time-series containing non-uniform structures with only isolated singularities. Sig
Externí odkaz:
http://arxiv.org/abs/2004.03319
Publikováno v:
Chaos 30, 023122 (2020)
Cross-correlations in fluctuations of the daily exchange rates within the basket of the 100 highest-capitalization cryptocurrencies over the period October 1, 2015, through March 31, 2019, are studied. The corresponding dynamics predominantly involve
Externí odkaz:
http://arxiv.org/abs/1911.08944
Publikováno v:
Nonlinear Dynamics 98, 2349-2364 (2019)
Multifractal detrended cross-correlation methodology is described and applied to Foreign exchange (Forex) market time series. Fluctuations of high frequency exchange rates of eight major world currencies over 2010-2018 period are used to study cross-
Externí odkaz:
http://arxiv.org/abs/1906.07491