• Proceedings of the Korean Operations and Management Science Society Conference
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• 1994.04a
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• pp.506-506
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• 1994

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1991.10a
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• pp.336-336
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• 1991

• Proceedings of the Korean Society of Potoscience Conference
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• spring
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• pp.3-3
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• 1995

• Nuclear Engineering and Technology
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• v.53 no.8
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• pp.2477-2487
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• 2021

To improve safety analysis technology for a nuclear reactor containment considering an interaction between a reactor coolant system (RCS) and containment, this study aims at an experimental investigation on the integrated simulation of the RCS and containment, with an integral effect test facility, ATLAS-CUBE. For a realistic simulation of a pressure and temperature (P/T) transient, the containment simulation vessel was designed to preserve a volumetric scale equivalently to the RCS volume scale of ATLAS. Three test cases for a steam line break (SLB) transient were conducted with variation of the initial condition of the passive heat sink or the steam flow direction. The test results indicated a stratified behavior of the steam-gas mixture in the containment following a high-temperature steam injection in prior to the spray injection. The test case with a reduced heat transfer on the passive heat sink showed a faster increase of the P/T inside the containment. The effect of the steam flow direction was also investigated with respect to a multi-dimensional distribution of the local heat transfer on the passive heat sink. The integral effect test data obtained in this study will contribute to validating the evaluation methodology for mass and energy (M/E) and P/T transient of the containment.

• Journal of the Korean Operations Research and Management Science Society
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• v.13 no.2
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• pp.47-58
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• 1988

The dynamic uncapacitated facility location model is formulated by a mixed integer programming. It has the objective of minimizing total discounted costs for meeting demands specified in different time periods at various demand centers. Costs include those for operation of facilities to demand centers and a fixed cost associated with the capital investment. The problem is decomposed into two simple Lagrangian relaxed subproblems which are coordinated by Lagrangian multipliers. We explored the effect of using the subgradient optimization procedure and a viable solution approach is proposed. Computational results are presented and further research directions are discussed.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2006.05a
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• pp.119-124
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• 2006

The purpose of this study is to provide basic guidelines for qualitatively advanced children's facilities and spaces in grand bookstores. The main concept is considered with a situation that grand bookstores of large corporations are increasing in quantity, but their social missions for the user are often being connived. The study is performed by research of current six domestic grand bookstores, two branches of each three large corporations, larger than 2,500py in Seoul, and the research is applied to Murtha's User Benefit Criteria as a basic format. As a result of the research, some problems to be improved are detected in ways of behavioral facilitation, physiological maintenance, perceptual maintenance, and social facilitation, therefore findings in survey turned out to be parents' dissatisfaction in many aspects. Finally, with this result, it is desirable for interior designers to reflect the indicated insufficient elements to their following children's bookstore space design for the user, children and their parents.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.29-30
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• 2011

원자력시설의 해체를 수행하는데 있어서 해체 대상 시설의 성격을 파악하는 것은 매우 중요하다. 해체 대상 원자력시설의 특성 자료 조사 결과는 해체 시 발생되는 폐기물의 양을 예측하고, 해체사업의 비용 산정에 크게 활용이 되며, 특성들의 그루핑을 통하여 일련의 예측 활동에서 훈련 집합으로 사용될 수 있다. 이를 목적으로 해체사업 대상 시설의 특성자료를 관리하는 시스템, DEFACS(DEcommissioning FAcility Characterization DB System)를 개발하였다. 이는 웹브라우저상에서 동작하며, 크게 특성에 따른 데이터의 입출력, 가공처리 등의 기능을 수행한다.

• Korean Management Science Review
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• v.14 no.1
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• pp.67-76
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• 1997

The most research on facility layout problems ignored the actual shapes of activity spaces and the aisles between activities. In many cases, the research also ignored the actual shape of building where the activities are to be arranged. In this paper, We present a block based layout technique that applies a genetic algorithm to search for a very good facility layout with horizontal aisles. From the extensive experiments for two different cases with respect to the shape of activity space, it was found that the proposed method generated better layouts than the ones obtained by applying Tam's algorithm in all test problems. The proposed algorithm showed about 10% improvement of performance on the average. We determined the best combination of the reproduction rule and the genetic operators with their probabilities for each test problem through the experiment.

• Journal of Korean Academy of Nursing
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• v.31 no.6
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• pp.1109-1118
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• 2001

The purpose of this study was to analyze the appraising frame and the accreditation system of universities in both Korea and the United Sates, as well as developing a standard plan to appraise 4 year nursing education institutions in Korea. Research design of this study was descriptive comparative research. The results of the research can be divided into six fields, educational purposes, educational courses, students, faculty, facility .equipments and administration.finance in Korea. Then the results were further categorized into seven fields : mission and governance, faculty, students, curriculum and instruction, resources, educational effectiveness and integrity. Thus Korean appraising frames were suggested to have eight fields of standard. The fields are philosophy and purposes of educational institution, educational courses and instruction, students, faculty, facility .equipments, adminstration.finance, educational effectiveness and integrity.

• Carbon letters
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• v.2 no.1
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• pp.9-14
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• 2001

Adsorption and desorption characteristics of methyl iodide at high temperature conditions up to $250^{\circ}C$ by TEDA-impregnated activated carbon, which is used for radioiodine retention in nuclear facility, was experimentally evaluated. In the range of temperature from $30^{\circ}C$ to $250^{\circ}C$, the adsorption capacity of base activated carbon decreased sharply with increasing temperature but that of TEDA-impregnated activated carbon showed higher value even at high temperature ranges. Especially, the desorption amount of methyl iodide on TEDA-impregnated carbon represented lower value than that on unimpregnated carbon. The breakthrough curves of methyl iodide in the fixed bed packed with base carbon and TEDA-impregnated activated carbon at high temperature were compared. TEDA-impregnated activated carbon would be applicable to adsorption process up to $150^{\circ}C$ for the removal of radioiodine in a nuclear facility.