Results 51 to 60 of about 7,202 (214)

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

Percolation on a multifractal [PDF]

Physical Review E, 2004
We build a multifractal object and use it as a support to study percolation. We identify some differences between percolation in a multifractal and in a regular lattice. We use many samples of finite size lattices and draw the histogram of percolating lattices against site occupation probability. Depending on a parameter characterizing the multifractal
Corso, G., Freitas, J. E., Lucena, L. S., Soares, R. F.   +3 more
openaire   +3 more sources

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

MULTIFRACTIONAL STOCHASTIC VOLATILITY MODELS [PDF]

Mathematical Finance, 2013
The aim of this work is to advocate the use of multifractional Brownian motion (mBm) as a relevant model in financial mathematics. mBm is an extension of fractional Brownian motion where the Hurst parameter is allowed to vary in time. This enables the possibility to accommodate for varying local regularity, and to decouple it from long‐range dependence
Corlay, Sylvain, Lebovits, Joachim, Lévy Véhel, Jacques   +2 more
openaire   +3 more sources

The role of cardiac acoustic biomarkers in monitoring patients with heart failure: A systematic literature review

ESC Heart Failure, Volume 12, Issue 2, Page 980-997, April 2025.
Abstract Heart failure (HF) creates a considerable clinical, humanistic and economic burden on patients and caregivers as well as on healthcare systems. To attenuate the significant burden of HF, there is a need for enhanced management of patients with HF.
Javed Butler, Malcolm Brown, Philippe Prokocimer, Ashley C. Humphries, Sophie Pope, Olivia Wright, Jun Su, Osama Elnawasany, Bogdan Muresan   +8 more
wiley   +1 more source

Financial dynamics and interconnectedness between layer-1 and layer-2 blockchains

International Review of Economics & Finance
This study investigates the financial dynamics and interdependencies between Layer-1 (L1) blockchains (Bitcoin and Ethereum) and their respective Layer-2 (L2) solutions through the lens of multifractal analysis.
Turker Acikgoz
doaj   +1 more source

Multifractal Analysis of Hydrologic Data Using Wavelet Methods and Fluctuation Analysis

Discrete Dynamics in Nature and Society, 2017
We study the multifractal properties of water level with a high-frequency and massive time series using wavelet methods (estimation of Hurst exponents, multiscale diagram, and wavelet leaders for multifractal analysis (WLMF)) and multifractal detrended ...
Tongzhou Zhao, Liang Wu, Dehua Li, Yiming Ding   +3 more
doaj   +1 more source

Fast Hand Movements Unveil Multifractal Roots of Adaptation in the Visuomotor Cognitive System

Frontiers in Physiology, 2021
Beyond apparent simplicity, visuomotor dexterity actually requires the coordination of multiple interactions across a complex system that links the brain, the body and the environment.
Yvan Pratviel, Yvan Pratviel, Veronique Deschodt-Arsac, Florian Larrue, Laurent M. Arsac   +4 more
doaj   +1 more source

Towards Multifractional Calculus [PDF]

Frontiers in Physics, 2018
After motivating the need of a multiscale version of fractional calculus in quantum gravity, we review current proposals and the program to be carried out in order to reach a viable definition of scale-dependent fractional operators. We present different types of multifractional Laplacians and comment on their known or expected properties.
openaire   +4 more sources

Donor‐acceptor fractal synergy: Decoding self‐similarity for stable organic photovoltaics

FlexMat, EarlyView.
Morphological congruence between donor and acceptor refines the fractal structure of bulk heterojunction films and enhances their self‐similarity. This optimized multiscale morphology preserves charge‐transport pathways against external disturbances, suppresses structural degradation, and improves the operational stability of organic solar cells while ...
Runzheng Gu, Zhongwei Ge, Yiyun Li, Fengzhe Cui, Zhen Fu, Mingxu Zhou, Dongcheng Jiang, Jiangkai Sun, Jianqiang Liu, Kangning Zhang, Feng Chen, Hang Yin, Yanming Sun, Xiaotao Hao   +13 more
wiley   +1 more source