Results 1 to 10 of about 128,827 (147)

Box dimension of the border of Kingdom of Saudi Arabia [PDF]

open access: yesHeliyon, 2023
Fractal dimension unlike topological dimension is (usually) a non-integer number which measures complexity, roughness, or irregularity of an object with respect to the space in which the set lies.
Mohammad Sajid   +5 more
doaj   +2 more sources

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

open access: yesRoyal 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   +3 more
doaj   +2 more sources

An Improved 3D Box-Counting Dimension Computing Technology for Estimating the Complexity of 3D Models

open access: yesIEEE Access, 2022
The box-counting dimension, which can effectively reflect the complexity and self-similarity of models, is an important method for calculating the fractal dimension of models.
Chong Wang, Weiqiang An
doaj   +1 more source

On the Lower and Upper Box Dimensions of the Sum of Two Fractal Functions

open access: yesFractal and Fractional, 2022
Let f and g be two continuous functions. In the present paper, we put forward a method to calculate the lower and upper Box dimensions of the graph of f+g by classifying all the subsequences tending to zero into different sets.
Binyan Yu, Yongshun Liang
doaj   +1 more source

Partially Explore the Differences and Similarities between Riemann-Liouville Integral and Mellin Transform

open access: yesFractal and Fractional, 2022
At present many researchers devote themselves to studying the relationship between continuous fractal functions and their fractional integral. But little attention is paid to the relationship between Mellin transform and fractional integral.
Zhibiao Zhou, Wei Xiao, Yongshun Liang
doaj   +1 more source

Modulation Recognition of Low-SNR UAV Radar Signals Based on Bispectral Slices and GA-BP Neural Network

open access: yesDrones, 2023
In this paper, we address the challenge of low recognition rates in existing methods for radar signals from unmanned aerial vehicles (UAV) with low signal-to-noise ratios (SNRs).
Xuemin Liu   +5 more
doaj   +1 more source

The Second Generalization of the Hausdorff Dimension Theorem for Random Fractals

open access: yesMathematics, 2022
In this paper, we present a second partial solution for the problem of cardinality calculation of the set of fractals for its subcategory of the random virtual ones.
Mohsen Soltanifar
doaj   +1 more source

Hausdorff Dimension and Topological Entropies of a Solenoid

open access: yesEntropy, 2020
The purpose of this paper is to elucidate the interrelations between three essentially different concepts: solenoids, topological entropy, and Hausdorff dimension.
Andrzej Biś, Agnieszka Namiecińska
doaj   +1 more source

Understanding 3D structural complexity of individual Scots pine trees with different management history

open access: yesEcology and Evolution, 2021
Tree functional traits together with processes such as forest regeneration, growth, and mortality affect forest and tree structure. Forest management inherently impacts these processes.
Ninni Saarinen   +8 more
doaj   +1 more source

Determining method of multiscale fractal dimension of red bed sandstone pores based on CT scanning

open access: yes地质科技通报, 2022
The distribution of pore structure inside rock has fractal characteristics in statistical sense, the determination of itsfractal dimension is of great significance to characterize the distribution law of pore structure quantitatively and reveal various ...
Zihan Zhang   +3 more
doaj   +1 more source

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