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박상찬(Sang-Chan Park),이상철(Sang-Chul Lee),박영배(Young-Bae Park),임광혁(Kwang Hyuk Im) 한국콘텐츠학회 2013 한국콘텐츠학회논문지 Vol.13 No.3
본 연구는 한방에서 사용되는 설문데이터와 생체신호데이터를 활용한 분석을 통하여 설문데이터와 생체신호 간의 연관성을 탐색하여 고객 개개인마다 적합한 고객 맞춤형 한방 생체신호 측정을 가능케 하는데 목적이 있다. 먼저, 기 개발된 설문을 통해 수집된 설문데이터를 분석하여 변증을 판단할 수 있는 설문 문항만을 선발하여 최적화하였고, 이렇게 최적화된 설문데이터를 데이터마이닝 기법을 이용하여 변증이 있는 그룹과 없는 그룹으로 구분하였다. 각 그룹에 속한 고객들의 위전도 측정데이터를 수집·분석하여 설문과 생체신호 간 연관성을 분석하였고, 아울러 변증과의 연관성을 분석하였다. The purpose of this research is to analyze the questionnaire of oriental medicine and bio-signal data and to identify the correlation between symptoms of oriental medicine and bio-signal in order to develop the customization model for individual patients. First, this research analyzes the questionnaire data using the developed questionnaire for oriental medicine symptoms and selects the optimized questionnaires for identifying the symptoms. Using data mining technologies with the selected questionnaires, this research divides the normal group and the group with symptoms. Finally, this research identifies the correlation between the questionnaire for oriental medicine symptoms and electrogastrogram signal.
프리쿨러를 적용한 케스케이드 줄-톰슨 냉동기의 성능특성
박상찬(Sang-Chan Park),윤지훈(Ji-Hoon Yoon),설성훈(Sung-Hoon Seol),손창효(Chang-Hyo Son),윤정인(Jung-In Yoon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The purpose of this study is to investigate the effect of application of precooler on the performance of the cascade Joule-Thomson cycle. The refrigerants used were zeotropic mixture: blened with R-218, R-23 and R-14, which are non-flammable refrigerants. In addition, the evaporation temperature was set to –110℃ considering the semiconductor process cooling. The results show that the precooler can reduce the capacity of the compressor, condensor and evaporator which was the cascade heat exchanger in the high stage cycle. Furthermore, application of precooler can increase overall COP, although the COP decreased each cycle.
프리쿨러를 적용한 케스케이드 줄-톰슨 냉동기의 성능특성
박상찬(Sang-Chan Park),윤지훈(Ji-Hoon Yoon),설성훈(Sung-Hoon Seol),손창효(Chang-Hyo Son),윤정인(Jung-In Yoon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The purpose of this study is to investigate the effect of application of precooler on the performance of the cascade Joule-Thomson cycle. The refrigerants used were zeotropic mixture: blened with R-218, R-23 and R-14, which are non-flammable refrigerants. In addition, the evaporation temperature was set to –110℃ considering the semiconductor process cooling. The results show that the precooler can reduce the capacity of the compressor, condensor and evaporator which was the cascade heat exchanger in the high stage cycle. Furthermore, application of precooler can increase overall COP, although the COP decreased each cycle.
박상찬,조병렬 충주대 산업과학기술연구소 1997 産業科學論文集 Vol.5 No.-
In this investigation, the mixing of solid particles in vibration of solid collection system was studied. The system consisted of two particles such that fine particles were located on the top of the coarse particles before vibratory mixing had started. Effect of particle size, particle density, vibration amplitude and vibration frequency were experimentally obtained.
朴相瓚,延翼俊,周素榮 충주대학교 산업대학원 1999 大學院論文輯 Vol.1 No.-
According to the fact that algae, which is usually used as a biosorbent contains chlorophyll, we used chlorophyll as an absorbent. In this study,chlorophyll was immobilized with agar, which was made of Platane, Oak, Ginkgo, and Pine. And the removing capacity of toxic heavy metal,Cd in the single ion solution,was investigated under pH, reaction time and concentration of heavy metal ion. The optimum conditions for the absorption of heavy metal was as follows : pH range was 4∼5, reaction time was 40 min, and the highest ratio of the removing rate was 50∼70 ppm. The order of the amount of Cd removed was specified as Oak > Ginkgo > Pine > Platane in these conditions, and the ratio of desorption was 66∼69%.
분산모델을 이용한 진동 공급기내에서 고체 입자 혼합특성
朴相瓚,趙炳烈 충주대 2000 한국교통대학교 논문집 Vol.35 No.2
This work has been carried out to study the mixing characteristics of solid in vibrating feeder by dispersion model.The experimental variables were particle size, particle densities, vibration amplitude and vibration frequency etc.The system consisted of two particles such that fine particles were located on the top of the coarse particles before vibratory mixing had started.It was found from this study that dispersion model can effectively explain the mixing characteristics of solid in vibrating feeder.
박상찬,전태성 忠州大學校 2002 한국교통대학교 논문집 Vol.37 No.2
We have many foggy days around Chungju region. So we have studied effects of fog and foggy days with statistics year book. Especially we have analyzed the changes of foggy days before and after construction of Chungju dam. According to the results in 1990-2000, foggy days showed 81.3 days a year, average value of acid rain indicated pH 5.1 in Chungju on 1999, highest temperature and lowest temp. were 20.05℃ and 6.59℃, value of highest relative humidity was 76.6% in Sep., and longest frosty days were 25.0 days in Dec..