نتایج جستجو برای: fractal shaped

تعداد نتایج: 100129  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده علوم 1391

چکیده : به منظورشناسایی وتفکیک مناطق دارای فعالیت تکتونیکی بیش تردرکوهستان داوران واقع درجنوب غرب شهرستان زرندوشمال غرب شهرستان رفسنجان،تحلیل فرکتالی بااستفاده از روش مربع شمارانجام گردید. بدین منظور با استفاده از عکسهای هوایی و نقشه های توپوگرافی منطقه، نقشه گسلها و آبراهه های منطقه ترسیم گردید. پس ازآن منطقه مورد مطالعه توسط 60 مربع به ابعاد 4کیلومتر، 240 کیلومترباابعاد 2کیلومتر، 960 مربع با...

ببرنژاد زیارت, هانیه, ذوالفقاری, علی اصغر, هاشمی, علی اصغر, کیانیان, محمدکیا, یزدانی, محمدرضا,

The objective of current study was to invstigate the accuracy of Tyler and Wheatcraft, Bird et al. and Kravchenko and Zhang fractal models in describing particle size distribution (PSD) of sediment in 14 successive check dams for two depths of 0-15 and 15-30 cm. Sediment PSD were determined in 28 samples using hydrometer method . The referred fractal models were fitted on sediments PSD data. Re...

Journal: :Wireless Personal Communications 2022

A unique dual hexagonal-shaped radiating patch design with hybrid fractal curves (Meander and Koch) is presented for quad-band wireless applications. Initially, the antenna from 0th to 2nd iteration of PGP (Partial Ground Plane) designed investigated. Further, get better results in respect Bandwidth (BW) coefficient reflection these are superimposed on limited ground plane 1st generated antenna...

Journal: :Applied Computational Electromagnetics Society Journal 2023

A novel ‘T’ square wideband fractal antenna is proposed for satellite communication. The Wideband achieved through the design and CPW feed. At first, a conventional square-shaped patch designed. Then replaced by Type-I to achieve wideband. Finally, Type-II with an L-Shaped boundary used enhance bandwidth greater extent. gain of ranges from 4 dB 6.3 entire frequency range 6.2 GHz 14 GHz. radiati...

Journal: :Thermal Science 2023

The distribution of fractures in the underground rock mass is complex, so it great significance to study parameter characteristics fracture seepage for geothermal exploitation, land subsidence, and other fields. Based on Weierstrass-Mandelbrot function, several X-shaped models with different roughness are established, law under inlet pressure studied. At same time, center (cross-region) selecte...

Journal: :International Journal of Electronics and Communication Engineering 2019

Journal: :International Journal of Communication Systems 2022

A novel multi-band clover leaf-shaped fractal antenna with integrated filtering to reduce higher order harmonics has been proposed. Existing microstrip antennas endure limited gain, narrow impedance bandwidth, and undesired frequency radiations. The proposed is designated operate simultaneously in following operating bands: 3.35–3.6 GHz for WiMAX, 5.156–5.825 WLAN, 5.7–6.4 Intelligent Transport...

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