Results 31 to 40 of about 164,476 (143)

Fractal Texture and Structure of Central Place Systems [PDF]

open access: yesFractals, 2020, 28(1): 2050008, 2017
The boundaries of central place models proved to be fractal lines, which compose fractal texture of central place networks. A textural fractal can be employed to explain the scale-free property of regional boundaries such as border lines, but it cannot be directly applied to spatial structure of real human settlement systems.
arxiv   +1 more source

A Novel Porous Media Permeability Model Based on Fractal Theory and Ideal Particle Pore-Space Geometry Assumption

open access: yesEnergies, 2020
In this paper, a novel porous media permeability model is established by using particle model, capillary bundle model and fractal theory. The three-dimensional irregular spatial characteristics composed of two ideal particles are considered in the model.
Yongquan Hu   +4 more
doaj   +1 more source

Fractal Dimension of Digital 3D Rock Models with Different Pore Structures

open access: yesEnergies, 2022
The macroscopic physical properties of rocks are profoundly determined by their microstructure, and the research of accurately characterizing rock pore structure has been extensively carried out in the fields of petroleum engineering and geoscience ...
Xiaobin Li   +3 more
doaj   +1 more source

From rock microstructure to macromechanical properties based on fractal dimensions

open access: yesAdvances in Mechanical Engineering, 2019
Basic rock mechanical parameters, that is, the uniaxial compressive strength σ c and elastic modulus E , have close relationships with the fractal dimension and inhomogeneity.
Dongmei Huang   +4 more
doaj   +1 more source

Influence of the Fractal Geometry on the Mechanical Resistance of Cantilever Beams Designed through Topology Optimization

open access: yesApplied Sciences, 2021
In this work, the complex geometry of beams obtained from topology optimization is characterized through the fractal dimension (FD). The fractal dimension is employed as an efficiency measure of the mass distribution in the beams, that is, the capacity ...
Pablo Pavón-Domínguez   +3 more
doaj   +1 more source

Fractal dimension of cortical functional connectivity networks & severity of disorders of consciousness.

open access: yesPLoS ONE, 2020
Recent evidence suggests that the quantity and quality of conscious experience may be a function of the complexity of activity in the brain and that consciousness emerges in a critical zone between low and high-entropy states.
Thomas F Varley   +8 more
doaj   +1 more source

Fractal Analysis on Asphalt Mixture Using a Two-Dimensional Imaging Technique

open access: yesAdvances in Materials Science and Engineering, 2016
Fractal is a mathematical set that has a fractal dimension which usually exceeds its topological dimension and may be nonintegral. Since the asphalt pavement texture has limitations of randomness and self-similarity, fractal theory has been explored to ...
Yue Hou   +3 more
doaj   +1 more source

What is the variant of fractal dimension under addition of functions with same dimension and related discussions

open access: yesAIMS Mathematics
This paper attempts to explore possible box dimension of two added fractal continuous functions with the same dimension. Two interesting and meaningful results are obtained.
Ruhua Zhang , Wei Xiao
doaj   +1 more source

On the dimension of arcs in mixed labyrinth fractals [PDF]

open access: yesarXiv, 2021
Mixed labyrinth fractals are dendrites in the unit square introduced by Cristea and Steinsky. They were studied recently by Cristea and Leobacher with respect to the lengths of arcs in the fractals. In this article we first give a construction method for mixed labyrinth fractals with the property that all arcs in the fractal have box counting dimension
arxiv  

Closed Contour Fractal Dimension Estimation by the Fourier Transform [PDF]

open access: yesChaos, Solitons and Fractals, Volume 44, Issue 10, October 2011, Pages 851--861, 2012
This work proposes a novel technique for the numerical calculus of the fractal dimension of fractal objects which can be represented as a closed contour. The proposed method maps the fractal contour onto a complex signal and calculates its fractal dimension using the Fourier transform.
arxiv   +1 more source

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