Results 21 to 30 of about 51,149 (311)

Persistent fluctuations in stride intervals under fractal auditory stimulation [PDF]

open access: yes, 2014
Copyright @ 2014 Marmelat et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and ...
Beek, P.J.   +25 more
core   +1 more source

A Fractal Statistical Analysis of Enron Stock Prices

open access: yesRecoletos Multidisciplinary Research Journal, 2014
This study examined the stock prices of Enron for the periods 1997 to 2002 with the use of fractal statistical analysis. The researchers posited that, since stock prices are products of human decisions, it should follow a fractal distribution.
Kristine June D. Uy   +1 more
doaj   +1 more source

Fractal Derivatives, Fractional Derivatives and q-Deformed Calculus

open access: yesEntropy, 2023
This work presents an analysis of fractional derivatives and fractal derivatives, discussing their differences and similarities. The fractal derivative is closely connected to Haussdorff’s concepts of fractional dimension geometry.
Airton Deppman   +2 more
doaj   +1 more source

Fractal Analysis on Surface Topography of Thin Films: A Review

open access: yesFractal and Fractional, 2022
The topographies of various surfaces have been studied in many fields due to the significant influence that surfaces have on the practical performance of a given sample.
Wenmeng Zhou   +5 more
doaj   +1 more source

Applications of fractal analysis to physiology [PDF]

open access: yesJournal of Applied Physiology, 1991
This review describes approaches to the analysis of fractal properties of physiological observations. Fractals are useful to describe the natural irregularity of physiological systems because their irregularity is not truly random and can be demonstrated to have spatial or temporal correlation.
R W, Glenny   +3 more
openaire   +2 more sources

Lacunarity of Fractal Superlattices: a Remote Estimation using Wavelets [PDF]

open access: yes, 2005
The lacunarity provides a useful parameter for describing the distribution of gap sizes in discrete self-similar (fractal) superlattices and is used in addition to the similarity dimension to describe fractals.
Jaggard, Dwight L.   +3 more
core   +1 more source

On the Lebesgue measure of one generalised set of subsums of geometric series

open access: yesМатематичні Студії
In the present paper, we study a set that can be treated as a generalised set of subsums for a geometric series. This object was discovered independently in various mathematical aspects.
O. P. Makarchuk, D. M. Karvatskyi
doaj   +1 more source

Optimal spinneret layout in Von Koch curves of fractal theory based needleless electrospinning process

open access: yesAIP Advances, 2016
Needleless electrospinning technology is considered as a better avenue to produce nanofibrous materials at large scale, and electric field intensity and its distribution play an important role in controlling nanofiber diameter and quality of the ...
Wenxiu Yang   +5 more
doaj   +1 more source

Determination of the Fractal Dimension of CO2 Adsorption Isotherms on Shale Samples

open access: yesGeofluids, 2022
The fractal theory has been widely applied to the analysis of gas adsorption isotherms, which are used for the pore structure characterization in unconventional reservoirs. Fractal dimension is a key parameter that can indicate the complexity of the pore
Hongyan Qi   +4 more
doaj   +1 more source

A Finite Element Approach to Modelling Fractal Ultrasonic Transducers [PDF]

open access: yes, 2014
Piezoelectric ultrasonic transducers usually employ composite structures to improve their transmission and reception sensitivities. The geometry of the composite is regular with one dominant length scale and, since these are resonant devices, this ...
Algehyne, Ebrahem A.   +3 more
core   +1 more source

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