نتایج جستجو برای: fractal elements

تعداد نتایج: 304687  

Journal: :Journal of Quantitative Spectroscopy & Radiative Transfer 2021

Atmospheric ice crystals scatter sunlight, affecting Earth’s climate through the radiation properties of cirrus clouds. Naturally occurring surface roughness and its effect on scattering remain largely unknown. Scattering by with rough surfaces is studied placing a finite, thin surface-roughness element an infinitely large, planar vacuum-ice boundary. The elements are generated using statistica...

Journal: :Springer proceedings in complexity 2021

By the method of numerical simulation, behavior deformation field both separated and related model fractal structures a cylindrical type was investigated. It is shown, that for considered structures, essentially depends on choice stochastic processes (realized during iterations) states qubit in perpendicular plane to axis cylinder. shown structure complex circular (elliptical) cylinder initial ...

Journal: :journal of advanced materials and processing 0
maryam shojaie bahaabad department of chemical and materialas engineering, shahrood university of technology, shahrood, iran

in this work, sio2 –zro2 mixed oxides was prepared by the polymeric sol–gel route. the characterization of pore structure, which determines the permeation process of membrane, is of great importance. so far, most investigations have focused on such pore structure as specific surface area and pore size distribution, but the surface fractal, the important parameter reflecting the roughness of por...

Journal: :زمین شناسی اقتصادی 0
مهدی بمانی سید حسین مجتهدزاده امیر حسین کوهساری

introduction mohammad-abad oryan is the only potential source of borate in the north-east of iran located in 50 km south of sabzevar. the area is located in tuff marl, tuffaceous marl, volcanic braccia and tuff braccia structures. remote sensing techniques, geological studies and integration of this data in gis were applied in an area of about 600 square kilometers to locate the promising areas...

2001
Frederick U. Diaz Dwight L. Jaggard Aaron D. Jaggard

This research project is based on previous work done by Dwight L. Jaggard and Aaron D. Jaggard on fractal ring arrays. We utilize fractals in the fabrication of a class of Cantor ring arrays. Fractal descriptors such as dimension, stage of growth, and lacunarity are applied in designing and characterizing these Cantor rings. Using the continuous arrays developed by Jaggard and Jaggard as a poin...

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,...

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...

2005
Gerard L. Gebber Hakan S. Orer Susan M. Barman

We used Allan factor analysis to classify time series of the discharges of single presympathetic neurons in the cat medullary lateral tegmental field (LTF) and rostral ventrolateral medulla (RVLM) and of the postganglionic vertebral sympathetic nerve. These time series fell into two classes of fractal-based point processes characterized by statistically self-similar behavior reflecting long-ran...

Journal: :Journal of neurophysiology 2006
Gerard L Gebber Hakan S Orer Susan M Barman

We used Allan factor analysis to classify time series of the discharges of single presympathetic neurons in the cat medullary lateral tegmental field (LTF) and rostral ventrolateral medulla (RVLM) and of the postganglionic vertebral sympathetic nerve. These time series fell into two classes of fractal-based point processes characterized by statistically self-similar behavior reflecting long-ran...

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