Results 11 to 20 of about 3,970,343 (282)

Assouad Dimension and Fractal Geometry [PDF]

, 2020
The Assouad dimension is a notion of dimension in fractal geometry that has been the subject of much interest in recent years. This book, written by a world expert on the topic, is the first thorough account of the Assouad dimension and its many variants
J. Fraser
semanticscholar   +1 more source

Improving the signal subtle feature extraction performance based on dual improved fractal box dimension eigenvectors [PDF]

Royal Society Open Science, 2018
Because of the limitations of the traditional fractal box-counting dimension algorithm in subtle feature extraction of radiation source signals, a dual improved generalized fractal box-counting dimension eigenvector algorithm is proposed.
Xiang Chen, Jingchao Li, Hui Han, Yulong Ying   +3 more
doaj   +1 more source

Study on fractal anisotropy characteristics of fracture surface topography of coal and rock under different loading and unloading conditions

Meikuang Anquan, 2021
In order to study the fractal anisotropy characteristics and size effect of coal rock fracture surface under typical failure modes, taking the fracture plane of coal and rock under complex failure load as the research object, laser scanning, CATIA3D ...
SONG Jinwang, LIU Yiting, GAO Mingzhong, XIE Jing, GUO Wanzhong, FU Maoquan, WANG Fei, LIU Guikang, YE Siqi   +8 more
doaj   +1 more source

Seepage–Fractal Model of Embankment Soil and Its Application

Fractal and Fractional, 2022
Over time and across space, the hydraulic conductivity, fractal dimension, and porosity of embankment soil have strong randomness, which makes analyzing seepage fields difficult, affecting embankment risk analysis and early disaster warning.
Xiaoming Zhao, Binbin Yang, Shichong Yuan, Zhenzhou Shen, Di Feng   +4 more
doaj   +1 more source

Trans-scale relationship analysis between the pore structure and macro parameters of backfill and slurry [PDF]

Royal Society Open Science, 2019
The characteristics of the porous structure of backfill are directly related to the macro parameters of the flowability of the filling slurry and the mechanical features of the backfill, which are fundamental to the study of multiscale mechanics of ...
Jianhua Hu, Qifan Ren, Xiaotian Ding, Quan Jiang   +3 more
doaj   +1 more source

Fractal Description of Rock Fracture Networks Based on the Space Syntax Metric

Fractal and Fractional, 2022
Fractal characteristics and the fractal dimension are widely used in the description and characterization of rock fracture networks. They are important tools for coal mining, oil and gas transportation, and other engineering problems. However, due to the
Lili Sui, Heyuan Wang, Jinsui Wu, Jiwei Zhang, Jian Yu, Xinyu Ma, Qiji Sun   +6 more
doaj   +1 more source

Stage division of urban growth based on logistic model of fractal dimension curves

Results in Physics, 2023
The time series of fractal dimension values of urban form always take on sigmoid curves. The basic model of these curves is logistic function. From the logistic model of fractal dimension curves, we can derive the speed formula and acceleration formula ...
Yanguang Chen
doaj   +1 more source

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

, 2011
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.
Beck, Bouligand, Brigham, Bruno, Chan, Chappard, Chen, Costa, Douady, Dougherty, Duvall, Fabbri, Falconer, Han, J.B. Florindo, Jones, Landini, Lapidus, Lebedev, Mandelbrot, O.M. Bruno, Oleschko, Plotze, Prusinkiewicz, Quevedo, Quevedo, Russ, Scarlat, Stoyan, Timbo, Tricot, Zhang   +31 more
core   +1 more source

Predictive modeling of low-temperature performance of SMA-13 cold-patching asphalt mixtures based on fractal theory [PDF]

E3S Web of Conferences
In order to study the relationship between the low-temperature performance of cold-patching asphalt mixtures and the fractal of gradation, 13 groups of SMA-13 gradations were designed, and then the low-temperature performance test of cold-patching ...
Sun Zhao-Hui, Xie Jie-Ru, Guo Ke
doaj   +1 more source

Quantification of Vessel Density in Retinal Optical Coherence Tomography Angiography Images Using Local Fractal Dimension.

Investigative Ophthalmology and Visual Science, 2016
PURPOSE To evaluate a fully automated local fractal dimension method to quantify vessel density and foveal avascular zone (FAZ) area in optical coherence tomography angiography (OCTA) images.
Rong Hu, Chun Ding
semanticscholar   +2 more sources