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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. The proposed method maps the fractal contour onto a complex signal and calculates its…

数据分析、统计与概率 · 物理学 2012-01-17 João B. Florindo , Odemir M. Bruno

We study the scaling scenery of Gibbs measures for subshifts of finite type on self-conformal fractals and applications to Falconer's distance set problem and dimensions of projections. Our analysis includes hyperbolic Julia sets, limit…

动力系统 · 数学 2015-10-28 Jonathan M. Fraser , Mark Pollicott

Urbanization is a phenomenon of concern for planning and public health: projections are difficult because of policy changes and natural events, and indicators are multiple. There are previous studies of development that used fractals, but…

动力系统 · 数学 2023-10-31 Junze Yin

Fractal geometry provides a powerful tool for scale-free spatial analysis of cities, but the fractal dimension calculation results always depend on methods and scopes of study area. This phenomenon has been puzzling many researchers. This…

物理与社会 · 物理学 2019-05-07 Yanguang Chen

This paper serves as a complementary material to a poster presented at the XXXVI Dynamics Days Europe in Corfu, Greece, on June 6th-10th in 2016. In this study, fractal dimension ($D$) of two types of self-affine signals were estimated with…

动力系统 · 数学 2016-11-21 Hana Krakovská , Anna Krakovská

Flow in fractured porous media occurs in the earth's subsurface, in biological tissues, and in man-made materials. Fractures have a dominating influence on flow processes, and the last decade has seen an extensive development of models and…

We show a new method of estimating the Hausdorff measure (of the proper dimension) of a fractal set from below. The method requires computing the subsequent closest return times of a point to itself.

动力系统 · 数学 2023-08-10 Ł. Pawelec

We establish estimates for restrictions to certain curves in R^2 of the Fourier transforms of some fractal measures.

经典分析与常微分方程 · 数学 2010-09-28 M. Burak Erdogan , Daniel M. Oberlin

Quantum metrology holds the promise of an early practical application of quantum technologies, in which measurements of physical quantities can be made with much greater precision than what is achievable with classical technologies. In this…

量子物理 · 物理学 2021-01-27 Jasminder S. Sidhu , Pieter Kok

The development of algorithmic fractal dimensions in this century has had many fruitful interactions with geometric measure theory, especially fractal geometry in Euclidean spaces. We survey these developments, with emphasis on connections…

计算复杂性 · 计算机科学 2020-07-29 Jack H. Lutz , Elvira Mayordomo

Fractured metal fragments with rough and irregular surfaces are often found at crime scenes. Current forensic practice visually inspects the complex jagged trajectory of fractured surfaces to recognize a ``match'' using comparative…

We show that certain iteration systems lead to fractal measures admitting exact orthogonal harmonic analysis.

泛函分析 · 数学 2007-05-23 Palle E. T. Jorgensen , Steen Pedersen

Under the formalism of annealed averaging of the partition function, a type of random multifractal measures with their multipliers satisfying exponentially distributed is investigated in detail. Branching emerges in the curve of generalized…

适应与自组织系统 · 物理学 2009-10-31 Wei-Xing Zhou , Zun-Hong yu

We consider a magnetostatic problem in a 3D "cylindrical" domain of Koch type. We prove existence and uniqueness results for both the fractal and pre-fractal problems and we investigate the convergence of the pre-fractal solutions to the…

数学物理 · 物理学 2018-12-04 Simone Creo , Maria Rosaria Lancia , Paola Vernole , Michael Hinz , Alexander Teplyaev

If our aesthetic preferences are affected by fractal geometry of nature, scaling regularities would be expected to appear in all art forms, including music. While a variety of statistical tools have been proposed to analyze time series in…

斑图形成与孤子 · 物理学 2023-04-05 John McDonough , Andrzej Herczyński

Fractal geometry of critical curves appearing in 2D critical systems is characterized by their harmonic measure. For systems described by conformal field theories with central charge $c\leqslant 1$, scaling exponents of harmonic measure…

高能物理 - 理论 · 物理学 2008-11-26 E. Bettelheim , I. Rushkin , I. A. Gruzberg , P. Wiegmann

Quantum tomography approaches typically consider a set of observables which we wish to measure, design a measurement scheme which measures each of the observables and then repeats the measurements as many times as necessary. We show that…

量子物理 · 物理学 2025-01-28 Otto Veltheim , Esko Keski-Vakkuri

For a large class of self-similar sets F in R^d analogues of the higher order mean curvatures of differentiable submanifolds are introduced, in particular, the fractal Gauss-type curvature. They are shown to be the densities of associated…

度量几何 · 数学 2010-10-01 Jan Rataj , Martina Zähle

We explored the fractal and multifractal characteristics of breast mammogram micrographs to identify quantitative biomarkers associated with breast cancer progression. In addition to conventional fractal and multifractal analyses, we…

医学物理 · 物理学 2025-05-28 Santanu Maity , Mousa Alrubayan , Prabhakar Pradhan

A multifractal analysis is performed on a three-dimensional grayscale image associated with a complex system. First, a procedure for generating 3D synthetic images (2D image stacks) of a complex structure exhibiting multifractal behaviour…

统计力学 · 物理学 2013-10-11 Lorenzo Milazzo