http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dongmyung Kim,Seokjae Choi,Suhan Kim,Byungcho Choi 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper represents the digital current mode control for a multi-module bidirectional converter intended for battery charging/discharging applications. The digital current mode control is adapted to achieve equal current sharing and good dynamic performance. The predictive control is used for the digital current compensation and the direct method is adapted to the digital voltage compensation. The control parameters for the digital compensations are designed and fine-tuned using the SISO tool in MATLAB software. Theoretical predictions are confirmed with both MATLAB simulations and measurements on an experimental prototype converter.
A 20-Gb/s 8.4-㎽ Adaptive Equalizer for Backplane Applications
Dongmyung Lee,Gunhee Han,Sung Min Park 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
An inductorless adaptive equalizer is realized in a 0.13-㎛ CMOS technology. In order to enhance the bandwidth and high-frequency boosting of the equalization filter, the negative capacitance circuits and 4<SUP>th</SUP>-order active feedback technique are introduced instead of on-chip passive inductors. Post-layout simulation results demonstrate the data rate of 20 Gb/s for 34-inch FR4 trace while dissipating power of only 8.4 ㎽ from a single 1.2-V supply. The equalizer core occupies the extremely small area of 230 × 65 ㎛².
Price of Simplicity under Congestion
Dongmyung Lee,Jeonghoon Mo,Guang Jin,Jinwoo Park IEEE 2012 IEEE journal on selected areas in communications Vol.30 No.11
<P>In this paper, we consider revenues of the NSP (network service provider) when there exists a 'congestion externality.' In particular, we compare revenues obtained using a flat price and two-part tariff and analyze the effect of congestion on the revenue loss when using a simple entry fee in lieu of the two-part tariff. Previous study has shown that when there is no delay disutility the revenue loss is small, which leads to a low 'Price of Simplicity.' However, in this study, we show that in an extreme case where all users are identical, the price of simplicity is substantial. Then we consider a more practical scenario where users have different preferences, and show that even in this case, under congestion externality, the price can be extremely high.</P>
Evidence for accentless words in South Kyungsang Korean
Dongmyung Lee,Stuart Davis 한국음운론학회 2010 음성·음운·형태론 연구 Vol.16 No.2
Recent studies help to establish Kyungsang Korean as a pitch accent language, which differs from some traditional works that view it as a tone language. The purpose of the current paper is to discuss whether South Kyungsang (SK) Korean has an accentless class of words like other pitch accent languages i.e., Japanese. In an examination of SK words of different length, we maintain that SK Korean has accentless monosyllabic, disyllabic, and trisyllabic words. We hold that SK Korean is not only a pitch accent language but also one that has an accentless class of words.
An 8.5-Gb/s Fully Integrated CMOS Optoelectronic Receiver Using Slope-Detection Adaptive Equalizer
Dongmyung Lee,Jungwon Han,Gunhee Han,Sung Min Park IEEE 2010 IEEE journal of solid-state circuits Vol.45 No.12
<P>An 8.5-Gb/s single-chip optoelectronic integrated circuit (OEIC) for short-distance optical communications is realized in a 0.13-μm CMOS process. The OEIC consists of an on-chip silicon photodiode, a transimpedance amplifier with modified regulated cascode input configuration, an adaptive equalizer based upon slope-detection algorithm, and a limiting amplifier with merged negative impedance circuits. The proposed slope-detection adaptive equalizer compensates the limited bandwidth and the temperature variation of the integrated silicon photodiode. Measured results demonstrate 120-dB Ω transimpedance gain, 5.9-GHz bandwidth, -3.2-dBm optical sensitivity for 10<SUP>-12</SUP> BER, and 47-mW power dissipation from a single 1.5-V supply. The OEIC chip core occupies the area of 0.1 mm<SUP>2</SUP>.</P>
Tone patterns of loanword compounds in South Kyungsang Korean
Dongmyung Lee 한국음운론학회 2013 음성·음운·형태론 연구 Vol.19 No.1
The current study investigates the tone patterns of South Kyungsang Korean (SKK) loanword compounds consisting of two words [W1+W2]. Out of these two words, one has to be a non-native Korean word. In this paper, English, Sino-Korean, and Japanese words are used as non-native Korean words. The tonal interactions of the current study show the consistent results with the previous research (Lee and Davis 2009, 2010, Lee 2011a, b). That is, SKK has an accented H tone class as well as an unaccented H tone class, and SKK disprefers a word initial sequence starting with two Low tones. SKK does not prefer two pitch accents in a prosodic domain either. (Dong-A university)