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대기확산 모델링 Software, AirMaster 개발
구윤서,윤희영,김성태,전경석,박성순,권희용,황주현,김종화,최종근,이임학,Koo, Youn-Seo,Yoon, Hee-Young,Kim, Sung-Tae,Jeon, Kyung-Seok,Park, Sung-Soon,Kweon, Hee-Yong,Hwang, Ju-Hyun,Kim, Jong-Hwa,Choi, Jong-Keun,Lee, Im-Hak 한국환경영향평가학회 2000 환경영향평가 Vol.9 No.4
A Korean air dispersion modeling software, AirMaster, was developed on a basis of dispersion theories adopted in U.S. EPA's ISC3 (Industrial Source Complex - version 3) model to assess the air quality impact from the stacks. Key characteristics of AirMaster are as follows: 1) The building downwash effect can be easily simulated; 2) The screen, long term, and short term models can be run independently; 3) The input data to run the model such as meteorological and terrain data are supplied automatically from the databases in AirMaster; and 4) The modeling procedure is easy and simple under the GUI window environment. In order to validate AirMaster, comparisons with ISC3 model and Indianapolis tracer experiment were carried out. It was shown that AirMaster was identical to ISCST3 and ISCLT3 models in predicting the 1 hr to annual concentrations from the stack under various stack emission and meteorological conditions. The 1 hr concentrations predicted by AirMaster also showed a good agreement with the Indianapolis tracer measurements.
최문석(Moon-suk Choi),김충효(Chung-hyo Kim),임유석(You-seok Lim),주성호(Seong-ho Ju),임용훈(Yong-hun Lim),전경석(Kyung-seok Jeon) 한국정보보호학회 2013 정보보호학회논문지 Vol.23 No.2
SCADA시스템에 대한 보안 필요성이 대두됨에 따라 최근 제어 프로토콜 보안기술에 대한 연구가 활발히 진행중이다. 그러나 성능, 가격 및 키 관리 등의 문제로 보안 솔루션이 legacy SCADA 시스템에 적용된 사례는 전무하다. 본 논문에서는 이러한 문제점을 해결하기 위해 low latency, 저가의 DNP 보안 솔루션을 제안한다. 본 논문에서 제안한 보안 솔루션은 데이터링크 계층에서 보안기능을 수행하고 보안을 위해 추가되는 데이터량을 최소화하여 전송시간 증가를 최소화하였을 뿐만 아니라 체계적인 키 구조와 키 분배방식을 제공하여 키 관리의 어려움을 해결하고자 노력하였다. As the need for security of SCADA systems is increasing, significant progress has been made in research on security of control protocol. However, very few security solutions were adapted to legacy SCADA system. The reasons for non-adoption are latency, cost and key management problem. We propose a low latency, economic security Solution to solve these issues. The proposed solution performs security function in data link layer and has minimum overhead to minimize latency. Furthermore, we try to solve the key management problem by providing systematic security keys and key distribution method.
대기확산 모델링 Software, AirMaster 개발
김종화,김성태,박성순,구윤서,윤희영,전경석,권희용,황주현,최종근,이임화 한국환경영향평가학회 2000 환경영향평가 Vol.9 No.4
A Korean air dispersion modeling software, AirMaster, was developed on a basis of dispersion theories adopted in U.S. EPA's ISC3 (Industrial Source Complex - version 3) model to assess the air quality impact from the stacks. Key characteristics of AirMaster are as follows: 1) The building downwash effect can be easily simulated; 2) The screen, long term, and short term models can be run independently; 3) The input data to run the model such as meteorological and terrain data are supplied automatically from the databases in AirMaster; and 4) The modeling procedure is easy and simple under the GUI window environment. In order to validate AirMaster, comparisons with ISC3 model and Indianapolis tracer experiment were carried out. It was shown that AirMaster was identical to ISCST3 and ISCLT3 models in predicting the 1 hr to annual concentrations from the stack under various stack emission and meteorological conditions. The 1 hr concentrations predicted by AirMaster also showed a good agreement with the Indianapolis tracer measurements.