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[This corrects the article on p. 840 in vol. 16, PMID: 28827999.].
We show that inserting pilot tones with frequency intervals inversely proportional to the subcarrier index exhibits greatly improved dispersion estimation performance when compared to the equal spacing design in optical fast orthogonal frequency division multiplexing (F-OFDM). With the proposed design, a 20-Gbit/s four amplitude shift keying optical F-OFDM system with 840-km transmission withou...
Male, born in 1964, Ph. D, Professor. His research interests mainly focus on the numerical simulation of mold filling and solidification, and optimal gating system design. The first author Quan-Zhi Dong is one of the master candidates supervised by him. E-mail: [email protected] Received: 2012-08-10; Accepted: 2012-09-10 *Ho-Young Hwang Quan-Zhi Dong , Young-Sim Choi , Jun-Ho Hong 2 and *Ho-...
در سال‌های اخیر، بخش زیادی از عرصه آبی دریاچه ارومیه خشک و بستری از رسوبات ریزدانه‌ی شور به وجود آمده که بسیار مستعد فرسایش بادی هستند. این پژوهش به منظور بررسی قابلیت برخی مدل‌های ریاضی در تشریح توزیع اندازه ذرات نهشته‌های بادی و پیش‌بینی حساسیت به فرسایش با استفاده از توزیع اندازه ذرات در تپه‌های ماسه‌ای بخشی از سواحل غربی دریاچه ارومیه صورت پذیرفت. در مجموع 48 نمونه از رئوس یک شبکه 500×500 م...
VISA (Visible to Infrared SASE Amplifier) is a high-gain self-amplified spontaneous emission FEL, which achieved saturation at 840 nm within a single-pass 4-m undulator. A gain length shorter than 18 cm has been obtained, yielding the gain of 2¥10 at saturation. The FEL performance, including spectral, angular, and statistical properties of SASE radiation, has been characterized for different e...
ral sources, it is important that relevant models of human liver toxicosis are used in order to identify agents with therapeutic potential. Liver toxicity induced by the chemicals and drugs has been recognized as a toxicological problem for a long time. Some of drugs are given for prolonged period of time and in high doses lead to the serious clinical concern. Therefore, it is valuable to use t...
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