• 한국시조학회지:시조학논총
• /
• 제19권1호
• /
• pp.235-260
• /
• 2003

최근, 필자는 가곡 가집 $\boxDr$영언$\boxUl$을 학계에 처음 소개한 바 있다. 이 $\boxDr$영언$\boxUl$은 그 동안 19세기초반을 대표해온 (육당본)$\boxDr$청구영언$\boxUl$과 높은 친연성을 지니며, $\boxDr$청육$\boxUl$과 동 시기 또는 그보다 조금 앞선 시기의 문화적 도상을 나타낸다. 이 글은 $\boxDr$영언$\boxUl$과 $\boxDr$청육$\boxUl$이 ‘이삭대엽 우ㆍ계면’ 배분방식이 상당히 큰 차이를 보인다는 점에 주목하고, $\boxDr$청육$\boxUl$의 ‘이삭대엽’이 18세기 가집의 특징인 이삭대엽 내의 ‘유명씨+무명씨’ 수록방식을 19세기 가집들이 취하는 ‘우ㆍ계면’의 양조배분에 그대로 덧씌운 것임을 밝혀, $\boxDr$청육$\boxUl$의 ‘이삭대엽’수록 방식이 우ㆍ계면 양조가 정착되는 19세기 초반의 가창실상에 위배된다는 사실을 논증해보았다. 반면 $\boxDr$영언$\boxUl$에는 작가표기가 전혀 없으나 역추적 해보면 ‘이삭대엽 우ㆍ계면’ 양조에 유ㆍ무명씨 작품이 골고루 배분되어 있다는 사실이 드러나는데, 이로써 $\boxDr$영언$\boxUl$이 당대 가창의 실질에 충실한 가집이라는 사실을 밝힐 수 있었다. 아울러 가집들 사이에는 악조나 악곡 배분에 갈등을 일으키는 작품들이 적지 않은데, 이들 작품들에 대한 곡해석 문제가 2세기에 걸쳐 지속적으로 가집이 편찬되었던 구체적 동인이었을 것임을 진단해 보았다. 특정시기 가곡향유의 실질은 곧 가곡의 곡 해석방식에 직결될 것이기 때문이다.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
• /
• pp.65-67
• /
• 2003

LCD TV market is rapidly growing. It is forecasted that the main size of the LCD TV will be about 20" to 52". The IPS mode is going to lead the large TFT LCD technology for TV application among other LC modes which are VA mode, WVTN mode and so on, because the display image quality of the IPS mode is superior to others.

• 전기학회논문지
• /
• 제56권3호
• /
• pp.623-628
• /
• 2007

This paper presents the new power line coupler which is applicable to spread spectrum power line communications. The proposed coupler maintains the adequate value of a capacitor between the transmitter mode and the receiver mode using a switch. In the transmit mode, the relatively high value of the capacitor is chosen to minimize the attenuation of transmitted signals. In the receiver mode, the value of the capacitor is chosen to be small enough so that the coupler attenuates power line noises. This coupler reduced the magnitude distortion due to having a high Q value and the power consumption caused by the AC current flowing into the capacitor. The simulation and measurement results show the improved performance in the transmitter and receiver mode, respectively.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1999년도 하계학술대회 논문집 A
• /
• pp.474-476
• /
• 1999

This paper presents the vector control of induction motor for traction drives. Especially, the PWM mode control method is well described to be selected as the change of speed to meet the wide speed range of the traction motor. Asynchronous space vector PWM mode and synchronous one pulse mode are basically used under the full speed range with the overmodulation PWM mode for the soft transfer between them. The validity of this proposed control scheme is verified with the simulation results.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2008년도 추계종합학술대회 B
• /
• pp.199-202
• /
• 2008

본 논문은 Fuzzy Slide Mode Control 및 BLDC모터를 이용하여 공기의 부하를 모사한 Actuator System에 관한 연구이다. 모터를 제어하기 위한 알고리즘으로 PID, PD, fuzzy Slide Mode Control의 특징을 비교 분석하였고 외란의 영향에 강한 Fuzzy Slide Mode Control을 적용하였다. 모터의 토크를 제어하여 실제 공기 부하에 맞는 토크를 모사함으로써 최대 2.3Nm의 토크와 50Hz의 응답 특성을 얻었다.

• 한국물환경학회지
• /
• 제25권6호
• /
• pp.872-878
• /
• 2009

Advanced Phase Isolation Ditch (APID) process was studied to develop economic retrofitting technology, for the plants where retrofitting of common activated sludge process is required. In this study, to develop and apply the modified intermittently aeration mode as process control conditions for treating municipal wastewater, a demonstration plant was installed and operated in the existing sewage treatment plant of P city. During this study, the average effluent $BOD_5$, SS, T-N, and T-P concentrations were 6.3, 4.5, 10.0, and 1.3 mg/L. The modified mode decreased the nitrification capability more than the conventional mode in the application period. Nitrate in the anaerobic condition can have a negative effect on biological phosphorus removal. In the decreasing nitrate levels, the modified mode increased the biological ability of removal phosphorus more than the conventional mode in this study. Therefore, newly developed APID process with modified intermittent aeration mode can be one of the useful processes for stable organic matter and nutrients removal.

• 한국지능시스템학회:학술대회논문집
• /
• 한국퍼지및지능시스템학회 2000년도 춘계학술대회 학술발표 논문집
• /
• pp.51-54
• /
• 2000

In variable structure control algorithm, sliding mode makes the closed loop system insensitive to modelling uncertainties and external disturbances. However due to imperfections in switching, the system trajectory chatters, which is very undesirable. And the insensitivity property of a sliding mode controller is present only when the system is in the sliding mode. To overcome these shortcomings, in this paper, new sliding mode control algorithm using time-varying sliding surface and fuzzy PI structrue is proposed.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1994년도 추계학술대회 논문집 학회본부
• /
• pp.83-85
• /
• 1994

This paper describes the dual mode control of the LDM(Linear DC motor) for carrier. The dual mode control consists of seek and analogue control. In seek mode, LDM is moved in the shortest time by switching line, and in analogue mode keeps at origion with high accuracy. We proposed different switching line method according to driving direction.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 2001년도 춘계학술대회 논문집 유기절연재료 전자세라믹 방전플라즈마 연구회
• /
• pp.110-113
• /
• 2001

In this paper, vibration mode of Windmill type Ultrasonic Motors was analysed. We used the ANSYS program to analysis by FEM. Vibration Mode express 20 modes as each resonance frequency. We bind nearly same modes and compress 5 modes. Windmill type Ultrasonic Motor's rotation is generated the friction of rotor at top endcap. Thus, We will find the best driving frequency that generating large friction at top endcap.

• 전기학회논문지P
• /
• 제57권3호
• /
• pp.260-264
• /
• 2008

In this paper, a dual mode baseband analog channel selection filter is described which is designed for the Bluetooth and WCDMA wireless communications. Using the presented current-mode integrator, a dual mode channel selection filter is designed. To verify the current-mode integrator circuit, Hspice simulation using 1.8V Hynix $0.18{\mu}m$ standard CMOS technology was performed and achieved $50.0{\sim}4.3dB$ gain, $2.29{\sim}10.3MHz$ unity gain frequency. The described third-order dual mode analog channel selection filter is composed of the current-mode integrator, and used SFG(Signal Flow Graph) method. The simulated results show 0.51, 2.40MHz cutoff frequency which is suitable for the Bluetooth and WCDMA baseband block each.