نتایج جستجو برای: fractal radiation condition

تعداد نتایج: 574149  

Journal: :JCS 2015
K. Thamizhchelvy G. Geetha

Corresponding Author: Thamizhchelvy, K. Faculty of Computing, Sathyabama University, Chennai, India Email: [email protected] Abstract: An Efficient Image Generation Algorithm is proposed. It generates Message Authentication Image (MAI) by using Fractals and chaos theory. The fractal images are generated by using Iterated Function System (IFS) techniques. We implemented and generated the f...

2010
Yanguang Chen

The Fourier transform and spectral analysis are employed to estimate the fractal dimension and explore the fractal parameter relations of urban growth and form using mathematical experiments and empirical analyses. Based on the models of urban density, two kinds of fractal dimensions of urban form can be evaluated with the scaling relations between the wave number and the spectral density. One ...

Journal: :Computer Physics Communications 2012
J. Avellar L. G. S. Duarte L. A. C. P. da Mota N. de Melo J. E. F. Skea

A set of MapleV R.4/5 software routines for calculating the numerical evolution of dynamical systems and flexibly plotting the results is presented. The package consists of an initial condition generator (on which the user can impose quite general constraints), a numerical solving manager, plotting commands that allow the user to locate and focus in on regions of possible interest and, finally,...

1998
E. Abdalla R. Mohayaee

We write a non-relativistic Lagrangian for a hierarchical universe. The equations of motion are solved numerically and the evolution of the fractal dimension is obtained for different initial conditions. We show that our model is homogeneous at the time of the last scattering, but evolves into a self-similar universe with a remarkably constant fractal dimension. We also show that the Hubble law...

Journal: :آب و خاک 0
الناز رضائی آباجلو کامران زینال زاده

introduction: soil hydraulic conductivity is considered as one of the most important hydraulic properties in water and solutionmovement in porous media. in recent years, variousmodels as pedo-transfer functions, fractal models and scaling technique are used to estimate the soil saturated hydraulic conductivity (ks). fractal models with two subset of two (solid and pore) and three phases (solid,...

Journal: :Computers & Mathematics with Applications 2009
E. M. Elabbasy H. N. Agiza A. A. Elsadany

The paper considers a nonlinear duopoly game with heterogeneous players, boundely rational and naive expectations. A duopoly game is modelled by two nonlinear difference equations. The existence and stability of the equilibria of this system are studied. The complex dynamics, bifurcations and chaos are displayed by computing numerically the largest Lyapunov exponents, sensitive dependence on in...

Abstract Purpose - The aim of this paper is to describe the population ecology theory through fractal thinking, an emergent human operating system that is creative, adaptive, healthy, and evolutionary; furthermore, a parallel is drawn between the population ecology model and the fractal structure. Top-down hierarchies are typically characterized by command and control systems of the authority t...

2007
J S Kim K-I Goh D Kim

Fractal scaling and self-similar connectivity behaviour of scale-free (SF) networks are reviewed and investigated in diverse aspects. We first recall an algorithm of box-covering that is useful and easy to implement in SF networks, the so-called random sequential box-covering. Next, to understand the origin of the fractal scaling, fractal networks are viewed as comprising of a skeleton and shor...

2012
T. Holden G. Tremberger E. Cheung R. Subramaniam R. Sullivan N. Gadura P. Schneider P. Marchese A. Flamholz T. Cheung D. Lieberman

A nucleotide sequence can be expressed as a numerical sequence when each nucleotide is assigned its proton number. A resulting gene numerical sequence can be investigated for its fractal dimension in terms of evolution and chemical properties for comparative studies. We have investigated such nucleotide fluctuation in the 16S rRNA gene of archaea thermophiles. The studied archaea thermophiles w...

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