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조현숙 한국관광정보학회 1997 觀光情報硏究 Vol.- No.1
Development of theme parks on new concept tourism attraction is the best tourism development business for refional tourism pormotion. Wide studies about them, however, are not enough still now. So this study has purpose on the show development process of theme parks, to build up future development stratefies of rigonal theme parks through it.
한국어 대용량 음성인식에서의 효율적인 시간 감축에 관한 연구
장춘서,이기수,신윤식,임은기,김병만,김현수 금오공과대학교 산업기술개발연구원 2000 産業技術開發硏究 Vol.16 No.-
In this paper a time reduction algorithm for large vocabulary speech recognition system has been studied. TDNN(Time Delay Neural Network) was used to classify vowel using phonetical fetures. To increase performance of vowel classification, modular TDNN architecture associated with 2 states input layer has been suggested.
DC-DC buck converter using hopping technique and DTMOS Schmitt Trigger logic gates for EMC
Huyn HaiAu,박상혁,김소영 한국과학기술원 반도체설계교육센터 2016 IDEC Journal of Integrated Circuits and Systems Vol.2 No.2
A few circuits for Electromagnetic Compatibility (EMC) were designed through IDEC’s last MPW (MS180-15030) process. One is DC-DC buck converter, and the other is Dynamic Threshold MOSFET (DTMOS) Schmitt Trigger (S. T.) logic gates. In this project, an EMI reduction technique is applied to the DC-DC converter. The frequency hopping technique is applied to reduce the power spectrum of the switching node of DC-DC converter which is the most dominant node generates EMI. The DC-DC converter with hopping frequency techniques is taped-out using 180nm CMOS process. The test results of the chip shows a significant improvement of the voltage spectrum at both output node and switching node of the DC-DC converter. Thus, the EMI generated by DC-DC converter is reduced by applying the frequency hopping technique. Meanwhile, DTMOS S. T. logic gates are designed and fabricated using 180nm CMOS process. Especially, Deep N-well was used to get the separated NMOS body potential. These S. T. gates can be used for low power applications to increase noise immunity of the digital circuit. The proposed gates are verified with a simple example digital circuit.
A LATERAL CONTROL ALGORITHM FOE ROLL-TO-ROLL WEB SYSTEM BASED ON BACK-STEPPING APPROACH
Kyung-Huyn Choi,Tran Trung Thanh,Jeong-Beom Ko,Su-Jin Kim,Yang-Hoi Doh,Dong-Soo Kim 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
Roll-to-roll based manufacturing plays an important role in producing devices at high speed with lower production cost in printed electronics and publishing industry. Web lateral control is one of the most important factors in improving the quality of product and contributes a considerable point in making devices at micrometer-level accuracy. In recent years, most algorithms proposed for web lateral control base on the Shelton’s model for designing the feedback control system using the PI controller. Experimental results showed that the existing models do not fully describe the characteristics of the lateral dynamics for some typical operating conditions and so result in poor control algorithms. In this paper, a new lateral control algorithm is proposed for web lateral control system based on back-stepping approach. The outcome of this study proves the reliability throughout simulation results in Matlab/Simulink and comparison with the algorithms based on the existing results.
조현경(Huyn kyung Cho),김재철(Jae-Chul Kim),정승복(Seung-Bock Jung),임상국(Sang Kug IM) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
This paper analyzes the effect of the energy saving and evaluates the economics using High Efficiency lighting. About 18 percent (17,000GWh) of total power demands in Korea are consumed in the lighting field. There isa lot of energy potential that can be saved because the power demand islower relatively than the others parts. The existing lighting that its length and electric energy are 32[mm] and 40[w] can alternate with high efficiency lighting which its length and electric energy are 26[mm] and 32[w]. Two Lightings is measuring the illumination and the electric energy and then are analyzed into the effect of the lighting saving by measurement.