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골격성 II급 성장기 환자에서 과개교합 개선 후 하악의 자발적인 성장
송근수,이협수,최동순,장인산,차봉근 대한치과교정학회 2019 대한치과교정학회 임상저널 Vol.9 No.2
A 9-year-old boy presented a skeletal Class Ⅱ facial type, an uprighted upper incisors, and anterior deep bite. He received an interceptive orthodontic treatment using removable active plate with anterior bite block. After 8 months of treatment, the expansion of upper dental arch, labioversion of the upper incisors, decrease of anterior overbite was achieved. The forward growth of the mandible was spontaneously occurred, improving the skeletal Class Ⅱ facial type and large anterior overjet. This case report presents and discusses the effect of anterior bite block applied in mixed dentition patient.
정전효과가 있는 100mm보다 큰 반도체 웨이퍼로의 입자침착
송근수,유경훈,이건형 한국입자에어로졸학회 2009 Particle and Aerosol Research Vol.5 No.1
Particle deposition on a semiconductor wafer larger than 100 mm was studied experimentally and numerically. Particularly the electrostatic effect on particle deposition velocity was investigated. The experimental apparatus consisted of a particle generation system, a particle deposition chamber and a wafer surface scanner. Experimental data of particle deposition velocity were obtained for a semiconductor wafer of 200 mm diameter with the applied voltage of 5,000 V and PSL particles of the sizes between 83 and 495 nm. The experimental data of particle deposition velocity were compared with the present numerical results and the existing experimental data for a 100 mm wafer by Ye et al. (1991) and Opiolka et al. (1994). The present numerical method took into consideration the particle transport mechanisms of convection, Brownian diffusion, gravitational settling and electrostatic attraction in an Eulerian frame of reference. Based on the comparison of the present experimental and numerical results with the existing experimental results the present experimental method for a 200 mm semiconductor wafer was found to be able to present reasonable data.
송근수(Geun-Soo Song),김춘식(Chun-Sik Kim),손범수(Beom-Soo Son),양지석(Ji-Seok Yang),한종우(Jong-Woo Han),박형진(Hyung-Jin Park),이건형(Kun-Hyung Lee),유경훈(Kyung-Hoon Yoo) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
This paper presents the measured water droplet size distributions and their humidification-related parameters of various water spraying nozzles for the development of a fully electric cleanroom. It was observed in the case of the present single-fluid nozzle models that contrary to the existing two-fluid nozzle, the single-fluid nozzles were not suitable as water humidification nozzles customized for the return shaft of the electric cleanroom. It is expected that the humidification performance of the single-fluid nozzles can be further improved based on the swirling effect inside the nozzle body.
반도체 클린룸의 피드백 제어방식에 따른 실내온도 과도응답 및 에너지소비 평가
송근수(Geun-Soo Song),정준수(Jun-Soo Jung),정동호(Dong-Ho Jeong),김영규(Young-Gyu Kim),양지석(Ji-Seok Yang),김춘식(Chun-Sik Kim),박형진(Hyung-Jin Park),이건형(Kun-Hyung Lee),유경훈(Kyung-Hoon Yoo) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
This paper presents the transient responses of indoor temperature and the energy consumptions of various feedback control schemes for a typical semiconductor cleanroom. The control schemes include ON/OFF, PID, ANN and MPC controls with saturation capabilities. Control block diagrams with the platform of MATLAB/Simulink are developed for an indoor temperature control with constant humidity ratio in the cleanroom. The simulation results showed that the properly tuned PID control scheme with saturation was more energy efficient than the other schemes were. However using ANN and MPC controllers would give the faster response with comparison to PID controllers and give the zero overshoot output.
송근수(Geun-Soo Song),김춘식(Chun-Sik Kim),손범수(Beom-Soo Son),양지석(Ji-Seok Yang),한종우(Jong-Woo Han),박형진(Hyung-Jin Park),이건형(Kun-Hyung Lee),유경훈(Kyung-Hoon Yoo) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
This paper presents the measured water droplet size distributions and their humidification-related parameters of various water spraying nozzles for the development of a fully electric cleanroom. It was observed in the case of the present single-fluid nozzle models that contrary to the existing two-fluid nozzle, the single-fluid nozzles were not suitable as water humidification nozzles customized for the return shaft of the electric cleanroom. It is expected that the humidification performance of the single-fluid nozzles can be further improved based on the swirling effect inside the nozzle body.
반도체 클린룸의 피드백 제어방식에 따른 실내온도 과도응답 및 에너지소비 평가
송근수(Geun-Soo Song),정준수(Jun-Soo Jung),정동호(Dong-Ho Jeong),김영규(Young-Gyu Kim),양지석(Ji-Seok Yang),김춘식(Chun-Sik Kim),박형진(Hyung-Jin Park),이건형(Kun-Hyung Lee),유경훈(Kyung-Hoon Yoo) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
This paper presents the transient responses of indoor temperature and the energy consumptions of various feedback control schemes for a typical semiconductor cleanroom. The control schemes include ON/OFF, PID, ANN and MPC controls with saturation capabilities. Control block diagrams with the platform of MATLAB/Simulink are developed for an indoor temperature control with constant humidity ratio in the cleanroom. The simulation results showed that the properly tuned PID control scheme with saturation was more energy efficient than the other schemes were. However using ANN and MPC controllers would give the faster response with comparison to PID controllers and give the zero overshoot output.