http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김건년(Kim, Gun-Nyeon),이명식(Lee, Myeong-Sik) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
Currently, due to the lack of manpower and workers’ construction experience at the construction site, it is difficult to clearly review the drawing specification and construction problems frequently occur during the progress. Not only that, clear management of materials used in the field is also difficult. For this reason, more than 10 years after BIM was introduced, many construction companies are making various attempts to introduce BIM. However, applying the construction BIM to date is a big burden to them in terms of time and cost. So they are loo king for an operation plan to obtain the desired effect at a minimum cost. Therefore, this study analyzed the use and effect of BIM in the field based on practical cases, and through this, it is intended to help construction companies establish BIM application processes.
바이폴라 공정을 이용한 압력센서용 출력전압 보상회로의 설계
이보나,김건년,박효덕 ( Bo Na Lee,Kun Nyun Kim,Hyo Derk Park ) 한국센서학회 1998 센서학회지 Vol.7 No.5
In this paper, integrated pressure sensor with calibration of offset voltage and full scale output and temperature compensation of offset voltage and full scale output were designed. The signal conditioning circuitry are designed that calibrate the offset voltage and full scale output to desired values and minimize the temperature drift of offset voltage and full scale output. Designed circuits are simulated using SPICE in a bipolar technology. The ion implanted resistor of different temperature coefficient were used to trimming the desired values. As a results, offset voltage was calibrated to 0.133V and the temperature drift of offset voltage was reduced to 42 ppm/℃. Also, the full scale output was calibrated to 4.65V and the temperature coefficient of full scale output was reduced to 40ppm℃ after temperature compensation.
박효덕,이재석,김건년,박종완,신상모 ( HyoDerk Park,jae Suk lee,Kun Nyun Kim,Jong Wan Park,Sang Mo Shin ) 한국센서학회 1994 센서학회지 Vol.3 No.3
Catalytic combustible gas sensors were fabricated by using γ-Al₂O₃ with large surface area and noble metal catalysts. The optimum conditions for γ-Al₂O₃ fabrication were investigated by DT/TGA and XRD analyses and it was found that fabricated γ-Al₂O₃ had superior value as surface area of 215.5㎡/g. Gas sensors were manufactured and tested to inflammable gases by using Pt coil as a heater and temperature sensing part, fine γ-Al₂O₃ powder as a bead material and Pt, Pd noble metal powder as a catalyst. From the results, fabricated sensor showed good sensitivity to LPG and LNG of 20mV/1000ppm, 6.5mV/1000ppm