搜索结果: 1-15 共查到“物理学 fractal”相关记录22条 . 查询时间(0.078 秒)
Texture Analysis And Characterization Using Probability Fractal Descriptors
Pattern Recognition Fractal Dimension Fractal Descriptors
2012/5/31
A gray-level image texture descriptors based on fractal dimension estimation is proposed in this work. The proposed method estimates the fractal dimension using probability (Voss) method. The descript...
Characterisation of Low Frequency Gravitational Waves from Dual RF Coaxial-Cable Detector: Fractal Textured Dynamical 3-Space
Low Frequency Gravitational Waves Dual RF Coaxial-Cable Detector Fractal Textured Dynamical 3-Space
2012/5/17
Experiments have revealed that the Fresnel drag effect is not present in RF coaxial cables, contrary to a previous report. This enables a very sensitive, robust and compact detector, that is 1st order...
Optimal box-covering algorithm for fractal dimension of complex networks
Optimal box-covering algorithm fractal dimension complex networks Computational Physics
2012/4/24
The self-similarity of complex networks is typically investigated through computational algorithms the primary task of which is to cover the structure with a minimal number of boxes. Here we introduce...
A generalized model for Yang-Fourier transforms in fractal space
local fractional calculus Yang-Fourier transforms fractal
2011/7/26
Abstract: Yang-Fourier transform is derived from local fractional calculus. This paper presents a generalized model for Yang-Fourier transform in fractal space and some results are investigated in det...
Applications of local fractional calculus to engineering in fractal time-space: Local fractional differential equations with local fractional derivative
local fractional calculus fractal time-space local fractional derivative local fractional differential equation
2011/7/26
Abstract: This paper presents a better approach to model an engineering problem in fractal-time space based on local fractional calculus. Some examples are given to elucidate to establish governing eq...
Fractal dimension evolution and spatial replacement dynamics of urban growth
bifurcation chaos fractal dimension Boltzmann’s equation logistical map spatial replacement nonlinear dynamics urban form urban growth
2011/8/29
This paper presents a new perspective of looking at the relation between fractals and chaos by means of cities. Especially, a principle of space filling and spatial replacement is proposed to explain ...
The fractal structure of cellular automata on Abelian groups
Discrete Mathematics (cs.DM) Quantum Physics (quant-ph)
2010/11/8
It is well-known that the spacetime diagrams of some cellular automata have a fractal structure: for instance Pascal's triangle modulo 2 generates a Sierpinski triangle. Explaining the fractal structu...
High-energy long-lived resonance of electrons in fractal-like semiconductor heterostructures
High-energy long-lived resonance electrons fractal-like semiconductor heterostructures
2010/11/9
A fractal-like alignment of quantum wells is shown to accommodate resonant states with long lifetimes. For the parameters of the semiconductor heterostructure GaAs/Al$_{0.4}$Ga$_{0.6}$As with the wel...
A procedure to Estimate the Fractal Dimension of Waveforms
Fractal Dimension of Waveforms time zero
2010/4/6
A method is described for calculating the approximate fractal dimension from a set of N values y sampled from a waveform between time zero and t. The waveform was subjected to a double linear transfor...
From thunderous mountain landscapes viewed from above to the erratic trajectories of Brownian motion, fractal patterns exist at many scales in nature. Physicists believe that fractals also exist in th...
Phase space structure and fractal trajectories in 1½ degree of freedom Hamiltonian systems whose time dependence is quasiperiodic
Phase space structure fractal trajectories freedom Hamiltonian systems time dependence
2009/11/13
We consider particle motion in nonautonomous 1 degree of freedom Hamiltonian systems for which H(p,q,t) depends on N periodic functions of t with incommensurable frequencies. It is shown that in near-...
Influence of a discontinuity on the spectral and fractal analysis of one-dimensional data
Influence of a discontinuity spectral and fractal analysis one-dimensional data
2009/11/11
The analysis of a data area or segment containing steep transitions between regions with different textures (for example a cloud and its background) leads to addressing the problem of discontinuities ...
A Fractal Model for the Effective Thermal Conductivity of
Granular Flow with Non-uniform Particles
fractal effective thermal conductivity granular flow
2007/8/15
2002Vol.37No.2pp.231-236DOI:
A Fractal Model for the Effective Thermal Conductivity of
Granular Flow with Non-uniform Particles
ZHANG Duan-Ming, LEI Ya-Jie, YU Bo-Ming, ZHANG Mei-...
Study of the Electromagnetic
Scattering from the Very Rough Fractal Sea Surface
very rough fractal sea surface electromagnetic
scattering second-order Kirchhoff approximation backscattering
enhancement
2007/8/15
2003Vol.40No.1pp.95-100DOI:
Study of the Electromagnetic
Scattering from the Very Rough Fractal Sea Surface
GUO Li-Xin, CHEN Jian-Jun, and WU Zhen-Sen
School of Science,...
Localized Coherent Structures with Chaotic and Fractal Behaviors in a
(2+1)-Dimensional Modified Dispersive Water-Wave System
variable separation approach dispersive
water-wave system fractal chaos
2007/8/15
2003Vol.40No.1pp.25-32DOI:
Localized Coherent Structures with Chaotic and Fractal Behaviors in a
(2+1)-Dimensional Modified Dispersive Water-Wave System
ZHENG Chun-Long
...