نتایج جستجو برای: fractal patch
تعداد نتایج: 70260 فیلتر نتایج به سال:
In this research, fractal relationships were used to evaluate the particle size distribution of the check dam. Three check dams with height of 2, 2 and 2.6 meters were selected and the hole was drilled same the height of the check dam at the sediment deposits. Then, depending on the color of the deposited layers, the thickness of the layers was determined and sampling was down from each layer t...
Every phenomena in the nature, despite the complexity of the subject, has certain rules and regulations. River pattern and behavior as one of the most complex natural phenomena to this is not an exception. Depending on geomorphologic, climatic, topographic and erosive conditions, the waterways exhibit different patterns and behaviors. One of the parameters which can be achieved using the comple...
Fractal analyzing of continuous processes have recently emerged in literatures in various domains. Existence of long memory in many processes including financial time series have been evidenced via different methodologies in many literatures in past decade, which has inspired many recent literatures on quantifying the fractional Brownian motion (fBm) characteristics of financial time series. Th...
The Pinglu Canal is the first artificial canal since founding of People’s Republic China following Beijing-Hangzhou Grand Canal. It a major pioneer project for many national strategies, and bears great construction significance. Attractive natural landscape ecological environment, abundant tourism cultural resources along have raised higher environmental requirement its construction. In this st...
For microwave imaging applications, a design for an ultra-wideband (UWB) fractal antenna is presented. The composed of pentagonal patch radiator fed by modified co-planar waveguide (CPW) ground plane. It built on low-loss Rogers RT/Duroid 5880 dielectric substrate with dimensions 24 × 30 0.787 mm3. According to the measurements, designed offers fractional bandwidth 123.56% ranging from 3 GHz 12...
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...
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