Results 21 to 30 of about 2,263,291 (335)

New analytical solution of the fractal anharmonic oscillator using an ancient Chinese algorithm: Investigating how plasma frequency changes with fractal parameter values

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
This paper uses the two-scale fractal dimension transform and He’s formula derived from the ancient Chinese algorithm Ying Bu Zu Shu to find the approximate frequency–amplitude expression of the fractal and forced anharmonic oscillator that can be used ...
Alex Elías-Zúñiga   +3 more
doaj   +1 more source

A new nonlinear fractal vibration of the Euler–Bernoulli beams in a microgravity space

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
Microgravity is an extreme physical environment, where many theories deduced on the earth’s surface become invalid. So a fractal vibration of Euler–Bernoulli beams in a microgravity space is presented in this paper via He’s fractal derivative.
Pei-Ling Zhang, Kang-Jia Wang
doaj   +1 more source

Fractal transforms and feature invariance [PDF]

open access: yesProceedings 15th International Conference on Pattern Recognition. ICPR-2000, 2002
In this paper, fractal transforms are employed with the aim of image recognition. It is known that such transforms are highly sensitive to distortions like a small shift of an image. However, by using features based on statistics kept during the actual decomposition we can derive features from fractal transforms, which are invariant to perturbations ...
Zeeuw, Paul M. de, Schouten, Ben
openaire   +1 more source

Wavelet-based 3D reconstruction of microcalcification clusters from two mammographic views: new evidence that fractal tumors are malignant and Euclidean tumors are benign. [PDF]

open access: yesPLoS ONE, 2014
The 2D Wavelet-Transform Modulus Maxima (WTMM) method was used to detect microcalcifications (MC) in human breast tissue seen in mammograms and to characterize the fractal geometry of benign and malignant MC clusters.
Kendra A Batchelder   +6 more
doaj   +1 more source

Analysis for pressure transient of coalbed methane reservoir based on Laplace transform finite difference method

open access: yesPetroleum, 2015
Based on fractal geometry, fractal medium of coalbed methane mathematical model is established by Langmuir isotherm adsorption formula, Fick's diffusion law, Laplace transform formula, considering the well bore storage effect and skin effect. The Laplace
Lei Wang   +4 more
doaj   +1 more source

Dynamics research of Fangzhu’s nanoscale surface

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
In this paper, we mainly focus on a fractal model of Fangzhu’s nanoscale surface for water collection which is established through He’s fractal derivative. Based on the fractal two-scale transform method, the approximate analytical solutions are obtained
Pinxia Wu   +4 more
doaj   +1 more source

Fractal Transformation of Krein–Feller Operators

open access: yesZurnal matematiceskoj fiziki, analiza, geometrii, 2023
Summary: We consider a fractal transformed doubly reflected Brownian motion with state space being a Cantor-like set. By applying the theory of fractal transformations as developped by Barnsley, et al., together with an application of a generalised Taylor expression we show that its infinitesimal generator is given in terms of a second order measure ...
Menzel, Max, Freiberg, Uta
openaire   +1 more source

An Efficient Computational Technique for Fractal Vehicular Traffic Flow

open access: yesEntropy, 2018
In this work, we examine a fractal vehicular traffic flow problem. The partial differential equations describing a fractal vehicular traffic flow are solved with the aid of the local fractional homotopy perturbation Sumudu transform scheme and the local ...
Devendra Kumar   +3 more
doaj   +1 more source

Fractal Analysis and Texture Classification of High-Frequency Multiplicative Noise in SAR Sea-Ice Images Based on a Transform- Domain Image Decomposition Method

open access: yesIEEE Access, 2020
Texture in synthetic aperture radar (SAR) images is a combination of the intrinsic texture of scene backscattering and the texture due to noncoherent high-frequency multiplicative noise (HMN) interactions that reflect erroneous information and lead to ...
Iman Heidarpour Shahrezaei   +1 more
semanticscholar   +1 more source

Fractal Dimensions and Random Transformations [PDF]

open access: yesTransactions of the American Mathematical Society, 1996
Summary: I start with random base expansions of numbers from the interval \([0,1]\) and, more generally, vectors from \([0,1]^d\), which leads to random expanding transformations on the \(d\)-dimensional torus \(\mathbb{T}^d\). As in the classical deterministic case of Besicovitch and Eggleston I find the Hausdorff dimension of random sets of numbers ...
openaire   +2 more sources

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