Results 41 to 50 of about 323,816 (153)

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

PLoS 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, Michael Craig, Ram Adapa, Paola Finoia, Guy Williams, Judith Allanson, John Pickard, David K Menon, Emmanuel A Stamatakis   +8 more
doaj   +1 more source

Fractal Dimension of Coastal Soil Aggregates and Its Relationship with Physical and Chemical Soil Properties

Guan'gai paishui xuebao, 2021
【Objective and objective】 Soil aggregate is a function unit commonly used to describe the impact of soil structure on soil fertility and quality. It is temporally dynamic, modulated by a myriad of biotic and abiotic factors such as wetting-drying cycles ...
HAN Xiao, SHE Dongli, WANG Hongde, ZHENG Yipeng   +3 more
doaj   +1 more source

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

Journal 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

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

Energies, 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, Wei Wei, Lei Wang, Jianchao Cai   +3 more
doaj   +1 more source

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

Energies, 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, Qiang Wang, Jinzhou Zhao, Shouchang Xie, Hong Jiang   +4 more
doaj   +1 more source

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

Applied 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, Guillermo Portillo-García, Alejandro Rincón-Casado, Lucía Rodríguez-Parada   +3 more
doaj   +1 more source

Sucesiones y la dimensión fractal [PDF]

, 2012
A través de una serie de problemas, cuya solución nos sumerge en el mundo matemático de los procesos infinitos, en forma natural se llega a la idea de sucesión y límite de una sucesión. En algunos de los problemas planteados aparecen objetos geométricos,
Hernández, Luis
core  

Fractal analysis of leaves: are all leaves self-similar along the cane?

Ekológia (Bratislava), 2013
The fractal dimension can be used to quantify the shape of a natural curve. Curves with similar degrees of irregularity will tend to have the same fractal dimension.
Gazda Anna
doaj   +1 more source

Roughness signature of tribological contact calculated by a new method of peaks curvature radius estimation on fractal surfaces [PDF]

, 2013
This paper proposes a new method of roughness peaks curvature radii calculation and its application to tribological contact analysis as characteristic signature of tribological contact.
Bigerelle, M., Bigerelle, M, Najjar, D, Nianga, J.M., Kubiak, KJ, NAJJAR, D., NIANGA, J. M., IOST, Alain, BIGERELLE, Maxence, HUBERT, C., KUBIAK, K. J., Hubert, Cédric, Iost, A., Kubiak, Krzysztof, NIANGA, Jean-Marie, Nianga, JM, Najjar, Denis, Iost, A, Hubert, C   +18 more
core   +1 more source

Fractal analysis of topography and reflectance surfaces

, 1998
The definition of a fractal has been successfully deduced from constructing the Koch curve and the Cantor set. Principles of seven methods (the ruler, box-counting, spectral structure function, intersection methods, cube-counting, and triangular prism ...
Jiang, Xinxia
core   +1 more source