Results 21 to 30 of about 29,188 (209)

Evaluating Pore Structure of Shale Reservoirs through Pore Space Multifractal Characterization

open access: yesGeofluids, 2023
Characteristics of pore structure are crucial to oil exploration and development in shale reservoirs, but practical evaluation of shale pore structure remains a longstanding challenge.
Quanqi Dai   +9 more
doaj   +1 more source

Numerical Investigation on Effective Elastic Modulus of Multifractal Porous Materials

open access: yesFractal and Fractional, 2022
The design of a novel material necessitates a fundamental understanding of its structure–property relation. Inorganic porous materials (media) such as natural soil and rock, and artificial ceramic and cement, exhibit multifractal characteristics in view ...
Yanan Xi, Lijie Wang, Yun Gao, Dong Lei
doaj   +1 more source

A Multivariate Method for Dynamic System Analysis: Multivariate Detrended Fluctuation Analysis Using Generalized Variance

open access: yesTopics in Cognitive Science, EarlyView., 2023
Abstract Fractal fluctuations are a core concept for inquiries into human behavior and cognition from a dynamic systems perspective. Here, we present a generalized variance method for multivariate detrended fluctuation analysis (mvDFA). The advantage of this extension is that it can be applied to multivariate time series and considers intercorrelation ...
Sebastian Wallot   +5 more
wiley   +1 more source

Multifractal Characteristics Analysis Based on Slope Distribution Probability in the Yellow River Basin, China

open access: yesISPRS International Journal of Geo-Information, 2021
Multifractal theory provides a reliable method for the scientific quantification of the geomorphological features of basins. However, most of the existing research has investigated small and medium-sized basins rather than complex and large basins.
Zilong Qin, Jinxin Wang, Yan Lu
doaj   +1 more source

Abduction and Deduction in Dynamical Cognitive Science

open access: yesTopics in Cognitive Science, EarlyView., 2023
Abstract This paper reviews the recent history of a subset of research in dynamical cognitive science, in particular that subset that allies itself with the sciences of complexity and casts cognitive systems as interaction dominant, noncomputational, and nonmodular. I look at this history in the light of C.S.
Anthony Chemero
wiley   +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

Fractal Anatomy of Human Organs: A Narrative Review of Structure, Function, and Clinical Perspectives. [PDF]

open access: yesClin Anat
ABSTRACT Fractal geometry describes complex, self‐similar patterns that repeat across spatial scales and is increasingly recognized as relevant in anatomical research. Indeed, the fractal organization is consistently observed in respiratory, cardiovascular, gastrointestinal, nervous, renal, hepatic, and dermatological systems.
Belviso I   +7 more
europepmc   +2 more sources

Multifractal random walk [PDF]

open access: yesPhysical Review E, 2001
We introduce a class of multifractal processes, referred to as Multifractal Random Walks (MRWs). To our knowledge, it is the first multifractal processes with continuous dilation invariance properties and stationary increments. MRWs are very attractive alternative processes to classical cascade-like multifractal models since they do not involve any ...
Bacry, Emmanuel, Delour, J., Muzy, J. F.
openaire   +4 more sources

Theoretical and Experimental Designs of the Planetary Boundary Layer Dynamics through a Multifractal Theory of Motion

open access: yesFractal and Fractional, 2022
The accurate determination of atmospheric temperature with telemetric platforms is an active issue, one that can also be tackled with the aid of multifractal theory to extract fundamental behaviors of the lower atmosphere, which can then be used to ...
Marius Mihai Cazacu   +5 more
doaj   +1 more source

Introduction to multifractal wavelet and detrended fluctuation analyses

open access: yesFrontiers in Physiology, 2012
Physiological and behavioural phenomena are often complex, characterized by variations in time series. Variations in time series reflect how these phenomena organize into coherent structures by interactions that span multiple scales in both time and ...
Espen Alexander Fürst Ihlen
doaj   +1 more source

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