Results 231 to 240 of about 26,251 (266)

FRACTAL GEOMETRIES IN DECAY MODELS

Journal of Physics A: Mathematical and General, 1984
Results of computer studies of the geometries produced by two distinct decay models are present. While one of the models (diffusion-limited decay) results in compact clusters, the other (random-walk decay) produces ramified clusters with the Hausdorf dimension (df) equal to 1.75+or-0.03 and 2.34+or-0.03 in two and three dimensions respectively.
J R Banavar, M Muthukumar, J F Willemsen
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Fractal Ohm’s law and the Drude model in fractal time

Physica B: Condensed Matter
Classical electrical conduction theories, including Ohm's law and the Drude model, assume charge transport in smooth Euclidean time. However, many disordered and glassy materials exhibit anomalous conduction and relaxation that classical models cannot fully explain. In this work, we present a generalized electrical conduction framework based on fractal
Jørgensen, Palle E.T., Khalili Golmankhaneh, Alireza, Deppman, Airton, Banchuin, Rawid   +3 more
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Video Textures Fractal Modeling

IEEE Signal Processing Letters, 2007
In this paper we propose a new method for natural video textures synthesis, using a three-dimensional (3-D) extended self-similar (ESS) fractal model. The autocorrelation functions (ACFs) of original texture increments are estimated, and a synthetic 3-D-ESS process whose increments have the same ACFs of the corresponding given ones is generated using a
Patrizio Campisi, Emanuele Maiorana, Alessandro Neri 0001   +2 more
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Fractal modelling of turbulent mixing

Combustion Theory and Modelling, 1999
The aim of this work is to propose a new model for turbulent flows, called the fractal model (FM), applicable both in a Reynolds averaged Navier–Stokes (RANS) and a large-eddy simulation (LES) formulation, with the ultimate goal of applying it to simulate turbulent combustion irrelevant of its mode (premixed or non-premixed).
GIACOMAZZI E., BRUNO, Claudio, FAVINI, Bernardo   +2 more
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A fractal network model with tunable fractal dimension

2008 International Conference on Neural Networks and Signal Processing, 2008
We propose a model for growing fractal networks based on the mechanisms learned from the diffusion-limited aggregation (DLA) model in fractal geometries in the viewpoint of network. By studying the DLA network, our model introduces multiplicative growth, aging and geographical preferential attachment mechanisms, whereby featuring topological self ...
null Lei Yang, null Wenjiang Pei, null Tao Li, null Yanfei Cao, null Yi Shen, null Shaoping Wang, null Zhenya He   +6 more
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Catalysis on a fractal lattice: A model for poisoning

Physical Review E, 1992
AbstractWe present theoretical calculations and Monte-Carlo simulations of a surface reaction model proposed by Fichthorn, Gulari and Ziff (1), on a geometrically disordered lattice. Here we look at this model on a percolation cluster in euclidean dimensions d=2 and d=3.
, Clément, , Leroux-Hugon, , Argyrakis
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Fractal based Modeling of Altimeter Data

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
This paper presents a new systematic simulation procedure to compute the altimeter signal return, thus showing the correlation of the signal return shape with height, slope, sub-surface layers and different scales of roughness of the surface of interest. For the first time, and as appropriate to natural surfaces, the scene is fully modelled by means of
G. Bernardi, FRANCESCHETTI, GIORGIO, IODICE, ANTONIO, RICCIO, DANIELE   +3 more
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Fractals and model catalysts

Journal of Porous Materials, 1995
A brief outline of the application of fractals to porous solids is given. The variation of porosity and surface area as functions of particle size and pore size are discussed. For F-20 Alcoa alumina most of the surface is contained in pores of radius near 20 A.
Carroll O. Bennett, W. Curtis Conner
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Regular fractal models of snowflakes and critical dynamics of the kinetic Ising model on fractals

Physical Review B, 1990
A group of regular fractal models for real snowflakes is proposed on a triangular lattice. The scaling form of the dynamics exponent of the kinetic Ising model on this group of fractal models, Z=${\mathit{D}}_{\mathit{f}}$+3/\ensuremath{\nu}, is found by the exact time-dependent renormalization-group method.
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A fractal model of effective mechanical properties of porous composites

Composites Science and Technology, 2021
Xujiang Chao, Wenlong Tian, Dahua Shou   +2 more
exaly