http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정창규 ( Chang-gyu Jung ),양은미 ( Eun-mi Yang ),이지호 ( Ji-ho Lee ),김현미 ( Hyun Mi Kim ),박해심 ( Hae-sim Park ) 대한천식알레르기학회(구 대한알레르기학회) 2017 Allergy Asthma & Respiratory Disease Vol.5 No.4
Purpose: Humulus japonicus pollen (Hop J) is a major cause of inhalant allergy in autumn of the Far East countries, and its allergenic potency has been increasing with climate changes. Allergen immunotherapy has been considered in Hop J-sensitized allergic patients; however, Hop J allergen extracts for immunotherapy are not commercially available. We speculate that Humulus lupulus pollen (Hop L) belonged to the same genus may share cross-reacting allergens with Hop J and evaluated allergenic relationships between these 2 pollens. Methods: Thirteen patients with allergic rhinitis and/or asthma sensitive to Hop J pollens were enrolled in Ajou University Hospital, Suwon, Korea. Hop J pollens were collected locally and lyophilized extracts were prepared, while lyophilized Hop L extracts were provided by Lofarma S.p.A. IgE-ELISA/enzyme-linked immunosorbent assay (ELISA) inhibition tests, sodium dodecyl sulphate-polyacrylamide gel electrophoresis and IgE-immunoblot/immunoblot inhibition analysis using sera from the enrolled subjects were performed. Results: All patients had high serum specific IgE to both Hop J and Hop L extracts by ELISA, but no significant correlation was found between these 2 extracts. ELISA inhibition tests showed significant dose-dependent inhibitions on IgE-bindings to Hop L with serial additions of Hop J extracts in a dose-dependent manner, while minimal inhibitions of IgE binding to Hop J were noted with additions of Hop L. IgE-immunoblot analysis demonstrated that the major allergenic component of Hop J at 12 kDa was inhibited by Hop J, while no inhibitions were noted by Hop L extracts on IgE-immunoblot inhibition analysis. Conclusion: These findings suggest that there may not be a significant cross-allergenicity between Hop J and Hop L. (Allergy Asthma Respir Dis 2017;5:217-222)
가동원전에서 공정모델링을 통한 PID 튜닝 시뮬레이션 방법
민문기(Moon-Gi Min),정창규(Chang-Gyu Jung),이광현(Kwang-Hyun Lee),이재기(Jae-Ki Lee),김희제(Hee-Je Kim) 대한전기학회 2014 전기학회논문지 P Vol.63 No.4
PID(Proportional, Integral, Derivative) controller is the most popular process controllers in nuclear power plants. The optimized parameter setting of the process controller contributes to the stable operation and the efficiency of the operating nuclear power plants. PID parameter setting is tuned when new process control systems are installed or current process control systems are changed. When the nuclear plant is shut down, a lot of PID tuning methods such as the Trial and Error method, Ultimate Oscillation method operation, Ziegler-Nichols method, frequency method are used to tune the PID values. But inadequate PID parameter setting can be the cause of the unstable process of the operating nuclear power plant. Therefore the results of PID parameter setting should be simulated, optimized and finally verified. This paper introduces the simulation method of PID tuning to optimize the PID parameter setting and confirms them of the actual PID controller in the operating nuclear power plants. The simulation method provides the accurate process modeling and optimized PID parameter setting of the multi-loop control process in particular.
정창규(Chang-Gyu Jung),최용구(Yong-goo Choi),이재기(Jae-Ki Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
원자력발전소의 금속파편감시설비는 원자로냉각 재계통에서 발생되는 충격신호에 대한 정보를 운영자에게 제공하여, 금속이물질로 인한 관련 구조물 파손을 미연에 방지하기 위한 설비이다. 운전 중에 발생되는 충격신호 중 대부분을 차지하는 거짓경보는 열팽창이나 구조물마찰에 의한 신호이나, 국내외에 설치되어 운전 중인 금속파편감시설비에는 열팽창과 구조물마찰에 의한 충격신호를 판단할 수 있는 알고리즘이 탑재되어 있지 않다. 따라서 본 연구에서는 대부분의 거짓 경보를 발생시키는 열팽창 및 구조물마찰에 의한 충격신호를 신호 검출단계에서 배제할 수 있는 알고리즘을 제시하고자 한다.
정창규(Chang-Gyu Jung),이광현(Kwnag-Hyun Lee),이재기(Jae-Ki Lee) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10
Loose Parts Monitoring System(LPMS) monitors loosened or detached parts and foreign parts inside the pressure boundary of a reactor coolant system (RCS). It is difficult to discriminate valid signal from LPMS alarms at full power since the signal pattern by thermal shocks and structure friction are similar to those by loose metal impacts. In addition, It is more difficult to discriminate the impact signals induced by the rod driving, sensor hard-line movement and loosened component since they have similar frequency characteristics with valid signals. This paper classifies the signal patterns by analyzing actual LPMS signal captured during nuclear power plant operation.
최용구(Yong-Goo Choi),정창규(Chang-Gyu Jung),조성한(Sung-han Jo) 대한전기학회 2010 정보 및 제어 심포지엄 논문집 Vol.2010 No.10
산업 플랜트의 운전변수를 측정, 전송하여 프로세스 제어 및 보호를 위해 사용되는 현장 계측기기는 플랜트의 신경망을 담당하는 핵심기기다. 그러나 현장 계측기기는 사용 년 수 증가에 따른 기기노화로 그 특성이 변화되어 불필요한 플랜트 운전정지를 발생시킬 수 있으나, 계측기기 노화 및 특성변화를 정확하게 진단하는 수단이 없어 플랜트의 제어성 및 안전성 확보가 어렵다. 따라서 본 문에서는 계측기기 노회 및 특성변화 진단을 위한 과학적인 기법을 제안하고, 성능평가 및 근본고장원인을 분석할 수 있는 다목적 현장계측기기 성능진단 시스템과 분석기술에 대해 고찰하고자 한다.