• Journal of Korea Water Resources Association
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• v.33 no.S1
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• pp.640-645
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• 2000

• Journal of Korea Water Resources Association
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• v.33 no.S1
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• pp.535-540
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• 2000

• Proceedings of the Korea Water Resources Association Conference
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• 1997.05a
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• pp.409-413
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• 1997

• Journal of Korean Society of Transportation
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• v.8 no.2
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• pp.67-75
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• 1990

This paper treats the problem to schedule for trains with how transit priority so as to maximizing the number that can be sent during given time periods without interfering with the fixed schedule for train with high transit priority in a track. We transform the this problem into Time Expanded Network without traverse time through application of Ford and Fulkerson Model and construct the Enumeration Algorithm for solutions using TENET Generator (TENETGEN). Finally, we compare our algorithm with Dinic's Maximal-Flow Algorithm and examine the avaliability of our procedures in personal computer.

• Journal of Korean Society for Quality Management
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• v.17 no.2
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• pp.149-157
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• 1989

A one-upper warehouse n-lower retailer inventory model is discussed. The probability distribution of demand for a given perod is independent. The inventory holding cost is proportional to the number of unsold units and the cost of shortages is proportional to the number of shortages. In the event of a shortage, units are redistributed with a cost proportional to the number of units from the retailers which are a surplus at the end of the period. The optimum stock levels are obtained and the effects of redistribution are analized.

• Journal of Korean Institute of Industrial Engineers
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• v.15 no.2
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• pp.109-116
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• 1989

In many cases, production-inventory systems involves significant demand variations. Actual demand is probabilistic and the production capacity is also limited. Finding the proper production lot sizes to this problem usually requires heavy computational procedures. Therefore a heuristic approach were under various assumptions is highly recommended. In this paper, an approach with consideration of probabilistic demand and limited production capacity is proposed.

• IE interfaces
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• v.6 no.1
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• pp.7-18
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• 1993

Since scientific management techniques are introduced into Korea about 1958, the backwardness of Korea companies and the ignorant owners of the companies had been main obstacles in aboriginality of those techniques. With the activation of industry in 1970s, however, the adaptation of IE is also activated. This paper, although it may be slipshod, describes the present situation as well as the adaptation history of IE techniques. This is for the expected necessity of memorizing the introduction of IE in the future.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.467-468
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• 2011

하천에서의 친수활동은 하천의 경관, 생태계, 물 등을 이용하여 이루어지는 인간활동과 심리적 만족감으로 하천어메니티의 한 요소로서 매우 중요하다. 그중 도시하천은 이용에 대한 요구와 자연환경보전이란 관심이 고조되고 있어 본 연구에서는 설문지 조사를 통한 전문가 의견을 토대로 다기준의사결정 기법을 이용하여 하천이용지수를 개발하였다.

• Journal of the KSME
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• v.32 no.10
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• pp.858-866
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• 1992

지난 십여 년 전부터 자동차 연비에 관한 법적 규제가 강화되고 소비자의 자동 변속기에 대한 기대치가 증가하면서, 오랜 역사를 가지면서도 신뢰성의 부족 등의 이유로 그 동안 유단 자동 변속기에 가리어 빛을 보지 못하던 무단 변속기가 관련 소재 및 가공 기술의 발달에 힘입어 점차 주목을 받고 있다. 여기서는 자동차용으로 사용될 수 있는 무단 변속기의 핵심 요소인 무단 변 속기구 몇 가지에 대하여 소개하고 최근의 무단 변속기 개발 동향에 대하여 소개하기로 한다. 그리고 여러 가지 무단 변속기 중에서 무단 변속 기구와 유성 기어를 사용하여 구성할 수 있는 무단 변속기의 구조와 특성에 대하여 논하고 이러한 특성을 이용하여 구성할 수 있는 무단 변 속기의 시스템 구성 원리와 작동 원리에 대하여 소개하기로 한다

• Journal of Korean Society for Quality Management
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• v.13 no.1
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• pp.41-50
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• 1985

The purpose of this study is to consider the criteria for decision-making of industrial location in view of substituting production factors through maximizing profit instead of minimizing transportation cost. This paper makes use of mutual relationship between spatial economy in Euclidean distance and substituting production factors in production theory. Therefore, this paper will develop weak points in classical theory of industrial location by introducing production theory which has conception of substituting production factors.