Results 61 to 70 of about 4,030,244 (281)

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
semanticscholar   +1 more source

An Investigation of Fractal Characteristics of Marine Shales in the Southern China from Nitrogen Adsorption Data

open access: yesJournal of Chemistry, 2015
We mainly focus on the Permian, Lower Cambrian, Lower Silurian, and Upper Ordovician Formation; the fractal dimensions of marine shales in southern China were calculated using the FHH fractal model based on the low-pressure nitrogen adsorption analysis ...
Jian Xiong, Xiangjun Liu, Lixi Liang
doaj   +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 universe and cosmic acceleration in a Lema\^itre-Tolman-Bondi scenario

open access: yes, 2018
In this paper we attempt to answer to the question: can cosmic acceleration of the Universe have a fractal solution? We give an exact solution of a Lema\^itre-Tolman-Bondi (LTB) Universe based on the assumption that such a smooth metric is able to ...
Cosmai, Leonardo   +4 more
core   +1 more source

Fractal Analysis of Particle Distribution and Scale Effect in a Soil–Rock Mixture

open access: yesFractal and Fractional, 2022
A soil–rock mixture (SRM) is a type of heterogeneous geomaterial, and the particle distribution of SRM can be described by fractal theory. At present, it is difficult to quantify the fractal dimension of a particle size distribution and understand the ...
Xiaodong Fu   +5 more
semanticscholar   +1 more source

Sudden drop of fractal dimension of electromagnetic emissions recorded prior to significant earthquake

open access: yes, 2013
The variation of fractal dimension and entropy during a damage evolution process, especially approaching critical failure, has been recently investigated.
A Olemskoy   +38 more
core   +1 more source

-variable fractals: dimension results

open access: yesForum Mathematicum, 2012
Summary: The families of \(V\)-variable fractals for \(V = 1,2,3, \ldots\), together with their natural probability distributions, interpolate between the corresponding families of random homogeneous fractals and of random recursive fractals. We investigate certain random \(V \times V\) matrices associated with these fractals and use them to compute ...
Barnsley, Michael   +2 more
openaire   +2 more sources

The Fractal Dimension of SAT Formulas [PDF]

open access: yesInternational Joint Conference on Automated Reasoning, 2013
Modern SAT solvers have experienced a remarkable progress on solving industrial instances. Most of the techniques have been developed after an intensive experimental process.
C. Ansótegui   +3 more
semanticscholar   +1 more source

fractal dimension

open access: yes, 2014
Citation: 'fractal dimension' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.FT07550 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

Detect Flame Fire Using Fractal Geometry in Color Digital Images [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2009
Pattern recognition, which takes features extraction as a basis for decision making, is considered as of the cutting-edge technologies. It is used in various useful applications such as tracking and monitoring objects.
Laheeb Ibrahim   +2 more
doaj   +1 more source

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