نتایج جستجو برای: channel

تعداد نتایج: 223934  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه هرمزگان - دانشکده کشاورزی و منابع طبیعی 1393

در تحقیق حال حاضر، با بهره گیری از این تکنولوژی به بررسی تغییرات کاربری اراضی و پوشش زمین و اثر آن بر دمای سطحی شهر گرگان استان گلستان، طی سال های 1986 و 2010 پرداخته شده است. بدین منظور از تصاویر tm و etm+ در این تحقیق استفاده گردید. پس از انجام عملیات پیش پردازش، با استفاده از الگوریتم حداکثر احتمال همانندی تصاویر به چهار کلاس کلی (1- جنگل، 2- منطقه شهری و ساخت و ساز ، 3- کشاورزی، 4- آب) طبقه...

Journal: :مدیریت بازرگانی 0
علی ملاحسینی دانشیار دانشگاه شهید باهنر کرمان، مدیریت، دانشگاه تهران، تهران، ایران فریده تاج الدینی کارشناس ارشد مدیریت بازرگانی، دانشگاه شهید باهنر کرمان، کرمان، ایران

the purpose of this research is to examine consumers’ brand value and brand loyalty toward luxury brands and current distribution channels for those brands (i.e. free standing, shopping center, specialty store, internet retailing). the population consisted of  the costumers, aged 19-39 years, who use branded apparel that is in kerman. about 200 questionnaires were distributed among the consumer...

Journal: :کشاورزی (منتشر نمی شود) 0
یاسر محمدی دانشجوی دکترا، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج حامد رفیعی دانشجوی دکترا، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج هوشنگ ایروانی دانشیار، گروه ترویج و آموزش کشاورزی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران نوید لقمانی کارشناس ارشد توسعه روستایی، دانشگاه آزاد اسلامی واحد علوم تحقیقات، تهران مهدی رحیمیان کارشناس ارشد توسعه روستایی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

in this research the activity of 75 producers, 55 wholesalers and 55 retailers, citrus market of jahrom county was investigated. the results indicated that margin of wholesale, retail and total margin of citrus in this county was 1461.1, 1480.3, and 2941.4 rs respectively. share of producer from marginal price was estimated to be 57.9 percent and share of wholesaler was more than retailer. in t...

The combined effects of nanoparticle and magnetic field on the nonlinear Jeffery-Hamel flow are analyzed in the present study. The basic governing equations are solved analytically to nonlinear ordinary differential equation using perturbation method together with a semi-numerical analytical technique called Hermite- Padé approximation. The obtained results are well agreed with that of the Adom...

Polar codes, that have been recently introduced by Arikan, are one of the first codes that achieved the capacity for vast numerous channels and they also have low complexity in symmetric memoryless channels. Polar codes are constructed based on a phenomenon called channel polarization. This paper discusses relay channel polarization in order to achieve the capacity and show that if inputs of tw...

زراعتکارمقدم, جواد , قاضی‌زاده, رضا , ناصر, ندا,

In this paper, required parameters for the spatial MIMO channel modeling are studied, and necessary steps for realization of the channel based on two different scenarios, called; “ un-polarized and cross-polarized antenna”, are introduced. We also consider the effect of cross correlations between important parameters like delay spread, shadow fading and angle spread in our study. Th...

Dong Zhang, Hui Chen, Jiang Hua Ren Sheng Ping Chao

The goal of this study was to determine the effects of the L-type calcium channel blockers verapamil and diltiazem on the currents of voltage-gated potassium channel (fKv1.4ΔN), an N-terminal-deleted mutant of the ferret Kv1.4 potassium channel. Measurements were made using a two electrode voltage clamp technique with channels expressed stably in Xenopus oocytes. The fKv1.4ΔN currents displayed...

Extensive researches on Wireless Sensor Networks (WSNs) have been performed and many techniques have been developed for the data link (MAC) layer. Most of them assume single-channel MAC protocols. In the usual dense deployment of the sensor networks, single-channel MAC protocols may be deficient because of radio collisions and limited bandwidth. Hence, using multiple channels can significantly ...

ژورنال: علوم آب و خاک 2006
منوچهر حیدرپور, , حسین افضلی مهر, , سید حسین فرشی, ,

Suitable stable channel design and optimization of river geometry can reduce cost of projects. The regime theory provides the possibility of empirical and semi-empirical investigations of stable channel design in which erosion and sediment transport are in equilibrium. The objective of this research is an investigation and a comparison of the influence of uniform and non-uniform flows on the pr...

Extensive researches on Wireless Sensor Networks (WSNs) have been performed and many techniques have been developed for the data link (MAC) layer. Most of them assume single-channel MAC protocols. In the usual dense deployment of the sensor networks, single-channel MAC protocols may be deficient because of radio collisions and limited bandwidth. Hence, using multiple channels can significantly ...

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