http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Equivalent Pre- Xenon-Oscillation Method for Core Transient Simulation
송재승,이창규,이정찬,유춘성,김용래,Song, J.S.,Lee, C.K.,Lee, C.C.,Yoo, C.S.,Kim, Y.R. Korean Nuclear Society 1995 Nuclear Engineering and Technology Vol.27 No.6
노심 천 이 현상의 모사계산을 위해서는 노심상태 의 초기조건을 실제노심과 일치시켜야 하는데 특히, 제논동특성이 관심의 대상이 되는 천이현상에 있어서는 직접적인 추정이 불가능한 노심내 제논분포의 초기상태가 천이현상의 해석결과에 커다란 영향을 미치게 된다 초기상태의 노심이 정확히 제논 평형상태에 있지 않는 경우 노심의 시간에 따른 변화를 잘 예측하기 위해서는 비평형 제논분포를 모사하는 초기화가 필수적이다. 본 연구에서는 천이현상 이전에 관측된 비평형 제논진동을 등가 제논진동으로 모사하여 천이현상을 보다 정확히 예측할 수 있는 제논 초기화 기법을 개발하였으며 영광 3, 4호기 시운전 시험에서 입수된 실측자료를 통하여 그 적용성을 입증 하였다. The initial condition of a core transient should be consistent with real core state for the simulation of the core tansient. The initial xenon distribution, which can not be measured in the core, has a significant effect on the transient with xenon dynamics. In the simulation of the transient starting from non-equilibrium xenon state, the accurate initialization of the non-equilibrium xenon distribution is essential for the prediction of the core transient behavior. In this study, a xenon initialization method to predict the core transient more accurately was developed through the equivalent pre-xenon-oscillation which represents the tenon oscillation before the transient and verified by the application of the simulation for a startup test of Yonggwang Unit 3.
송재승(Song, Jae-Seung),미야우치 히로유키(Miyauchi Hiroyuki),미야우치 카오리(Miyauchi Kaori),이준(Lee, Jun),윤용상(Youn, Yong-Sang),김규용(Kim, Gyu-Yong) 대한건축학회 2014 大韓建築學會論文集 : 構造系 Vol.30 No.1
Thermal insulation performance of a multi-layered waterproofing membrane system with sandwich type of polyethylene foam and aluminum film was evaluated by using small specimen in the indoor environmental test chamber, and was compared with the effect of insulation sheet layers, the heat load on concrete substrate or the correlation with outdoor test results. The test specimens were 6 types; only concrete, single urethane system and some multi-layered systems with thermal insulation sheet. The indoor test was carried out with temperature cycles of 20℃ to 80℃ and 20℃ to -20℃. The temperature of specimens were calculated by using the simplified calculation equation about the effect of season and specimen size, and the thermal insulation behavior between measurement value and the predicted value of had a good correlation. Also, the waterproofing system with multi-layered insulation sheets had a high insulation performance than that of existing systems, and can contribute to the reduction of heat load on concrete substrate and the saving energy.
송재승(Jaeseung Song),김민성(Minsung Kim),박수용(Sooyong Park) 한국정보과학회 2003 정보과학회논문지 : 소프트웨어 및 응용 Vol.30 No.11·12
빠르게 변화하는 시장의 요구에 대응하고자 특정 영역에 속하는 애플리케이션 간의 재사용을 높이려는 프로덕트 라인 개발 방법에 대한 연구가 활발하게 진행되고 있다. 프로덕트 라인 개발 방법에서 는 영역 내의 여러 애플리케이션들 간의 차이정과 공통점을 분류하는데 피쳐 모델링이라는 분석 방법을 주로 사용하고 있다. 기존 피쳐 모델링에서는 피쳐를 비정형적으로 명세화하기 때문에 모호성, 이해의 오류, 잘못된 해석 등의 문제가 발생하고 있다. 피쳐를 추상화하여 도메인에 독립적인 메타 모델로 나타내고 정형화 기법을 도입하여 명세화 한다면 기존의 피쳐 모델에서 발생하는 문제점들을 해결할 수 있을 것이다. 따라서 본 논문에서는 첫째, 메타 수준에서의 피쳐 모델링을 통하여 피쳐의 구조와 속성을 정의한 후 다중 패러다임 정형화 명세 언어를 사용하여 피쳐를 영세화하는 기법을 제시하였다. 둘째, 피쳐에 대한 정형화 명세 프로세스를 기술하였으며, 셋째, 명세화된 피쳐들 간에 발생할 수 있는 문제점들을 해결하기 위한 피쳐 상호 작용 관리기법을 정의하였다. 그리고 마지막으로, 제시된 피쳐의 정형화 명세 기법을 분산 미팅 스케줄러 시스템에 적용시켜보았다. In a feature modeling, problems such as ambiguities, interpretation errors, incompleteness, etc caused by informal specification occur in the modeling phase. Therefore, feature specification method and processes are suggested in this paper to resolve these problems. The structure and language of feature modeling is defined in this paper to specify various features First, this feature model is abstracted in the meta-level to get predicates and attributes. Formal feature model specification method is Proposed using multi-paradigm language. Second, Feature specification process is proposed to describe how to specify feature Connally. And third, Feature interaction management is defined to solve the problems caused between specified features. Finally, the proposed feature specification method is applied to Distributed Meeting Scheduler System domain.
지붕 단열성능에 영향을 미치는 방수재 표면 색채의 영향
송재승(Song, Jae-Seung),미야우치 히로유키(Miyauchi Hiroyuki),이준(Lee, Jun),미야우치 카오리(Miyauchi Kaori),전승식(Jeon, Seung-Shick),김규용(Kim, Gyu-Yong) 대한건축학회 2014 大韓建築學會論文集 : 構造系 Vol.30 No.6
For the purpose of improving saving energy of building from viewpoint of roofing system, we focused on the contribution of waterproofing system with thermal insulation performance, and the effect of color difference on waterproofing system were measured and evaluated by using test specimens exposed in the outdoor environment. The test specimens were 8 types with a various color of top coating. The outdoor temperature, solar radiation and the temperature between surface-inside of test specimen were measured in summer and winter season. In case of strong solar radiation, the surface temperature of waterproofing membrane increased in the dark color topcoating. In case of color effect between outside and inside of test specimen, the ratios of thermal insulation on outside-inside in the test specimen were no significant difference by color difference. On the other hand, the dark color top coating in inside-outside showed higher temperature difference more than that of light color. The surface temperature on waterproofing membrane and the surface-air temperature difference against solar radiation was calculated from brightness of color. It was concluded that the color on waterproofing membrane contribute to energy saving in the summer more than winter.