• 대한조선학회논문집
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• 제45권2호
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• pp.202-212
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• 2008

In recent days, global shipbuilding companies have been increasing their productivity or expanding their shipyards for a large amount of orders. Though, few researches about the shipyard layout designs have been studied. This research presents a simulation-based shipyard layout design framework to resolve the problems of the shipyard layout design. The shipyard layout design framework was developed on the basis of systems engineering method. The disciplined system engineering technique was guided by ISO/IEC 15288 during the planning phase of the shipyard layout design framework development. This framework suggests that how efficient and effective shipyard layout design could be got, that can satisfy the stakeholder of the layout. Furthermore, it is recommended that how the proposed shipyard layout should be verified and validated by digital simulation model. It is expected that the framework will contribute to not only the improvement of the existing shipyard but also the construction of the new shipyard.

• 대한토목학회논문집
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• 제32권2D호
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• pp.95-101
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• 2012

본 연구에서는 복합환승센터 접근교통수단의 정류장시설 배치기준을 개발하였다. 복합환승센터의 시설배치기준은 접근교통수단(Access Mode)의 승하차시설의 상대적인 위치선정에 관한 것으로 접근교통수단 하차 후 주교통수단(Main Mode)의 승하차 시설까지 이동거리를 최소화하도록 기준을 제시하였다. 이동거리 중 계단은 평면거리 보다 큰 가중치를 적용하였고 에스컬레이터는 평면거리 보다 적은 가중치를 적용하였다. 효과척도로서 접근교통수단별 이용자 가중평면환산거리를 채택하였다. 최종적으로는 본 연구에서 제시된 기준을 기존 김포공항에 적용하여 접근교통수단의 승하차 시설의 위치와 접근시설의 개선방안을 제시하였다.

• 경영과학
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• 제14권1호
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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.

• 한국건설관리학회논문집
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• 제23권5호
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• pp.34-42
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• 2022

건설현장배치는 프로젝트 공기와 비용에 큰 영향을 미치므로 이에 대한 최적화 및 자동화 연구가 수행되고 있다. 하지만, 이러한 연구의 목표변수인 건설현장배치의 수준을 평가하는 근거는 매우 제한적이다. 본 연구는 사용성평가 방법을 활용하여 건설현장배치의 수준을 평가하고 향후 건설현장배치 자동화 및 최적화 연구에서 초점을 맞추어야 하는 부분을 확인하고자 하였다. 설문결과 국내건설현장배치 사용성은 효과와 작업환경 항목에서 낮은 점수를 받았으며, 작업자가 관리자에 비해 낮게 평가하였다. 또한 작업환경 항목에서 낮은 점수를 받았으며 현장접근성과 시설 편의성이 낮음을 확인하였다. 이 연구는 건설현장배치 현황을 파악하고 개선방향을 제시함으로써 건설현장배치 자동화 및 최적화 연구의 진행을 위한 지식에 기여한다.

• 한국시뮬레이션학회논문지
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• 제12권3호
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• pp.41-53
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• 2003

The major components of an engine are engine block (or cylinder block), cylinder head, crank shaft, connecting rod and cam shaft. Thus the engine shop usually consists of six sub-lines, five machining lines and one assembly line. Flow line is the typical concept of layout for machining these parts, especially for engine block. In order to design an engine block machining line, several factors should be considered such as yearly production target, working hours, machines, tools, material handling equipments and so on. If the designers of manufacturing line were unaware of some factors those would be influenced on the system performance, it would make greater problems in the phase of mass production. Therefore the initial design of engine block machining line should be verified carefully. Simulation is the most powerful tool for analyzing the initial layout. This paper introduces the major factors those should be considered for designing the machining line and their effects on the system performance. 3D simulation models are developed with QUEST. Using the simulation model developed the initial layout is analyzed, and we suggest some ideas for improvement.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권9호
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• pp.776-786
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• 2006

본 논문은 제한된 디스플레이를 가지는 모바일 디바이스 상에서 XML로 작성된 정보를 사용자에게 효과적으로 보여주는 rectangle layout을 이용한 XML 기반의 모바일 정보 시각화 시스템을 제안한다. 먼저 트리 형태의 정보뿐만 아니라 사이클이 존재하는 그래프 정보까지 기술하도록 XML 스키마를 정의한다. XML로 기술된 정보에 대해 디스플레이 화면상에 배치할 때, 사각형의 형태를 가지는 디스플레이 화면의 특징을 고려하여 기존 radial layout을 개선한 rectangle layout 방식을 적용한다. 그 다음 전체 정보와 사용자가 관심을 가지는 정보를 동시에 표현하기 위해 어안 뷰(fisheye view)알고리즘의 DOI를 rectangle layout에 표현된 모든 정보에 적용한다. 또한 사용자가 새로운 관심 대상 정보를 선택하였을 때, 정보들의 화면 재배치에 따른 변화에 사용자 혼란을 줄이고 사용자의 인지력을 향상시키기 위한 방법을 모바일 디바이스의 능력을 고려하여 제안한다. 제안된 focus+context 방식의 정보 시각화 시스템은 데스크 탑에 비해 CPU 계산 능력과 디스플레이 화면, 메모리 제약이 심한 PDA, 셀룰라 폰, 스마트 폰과 같은 모바일 디바이스 상에서 정보 검색에 효과적인 인터페이스를 제공한다. 본 논문에서는 제안한 정보 시각화 시스템을 PDA상에 구현하고 제안된 rectangle layout을 이용한 정보 시각화 방식과 기존 radial layout을 이용한 정보 시각화 방식에 다양한 조건을 적용하여 실험 및 평가를 진행한다.

• International Journal of Industrial Entomology and Biomaterials
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• 제20권2호
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• pp.37-43
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• 2010

The wild silkworm, Antheraea mylitta Drury (Lepidoptera: Saturniidae) is a polyphagous silk producing insect that feeds on Terminalia arjuna, T. tomentosa and Shorea robusta and is distributed in the forest belts in different states of India. Phenotypically distinct populations of the A. mylitta are called "eco-race" or "ecotypes". Genetic improvement of this wild silkworm has not progressed much due to lack of adequate information on the factors that control the expression of most of the economically important traits. Considering the amazing technological advances taking place in molecular biology, it is envisaged that it is now possible to take greater control on these intractable traits if a combination of genetic, molecular and bioinformatics tools are used. Linkage disequilibrium (LD) mapping is one such approach that has extensively been used in both animal and plant system to identify quantitative trait loci (QTLs) for a number of economically important traits. LD mapping has a number of advantages over conventional biparental linkage mapping. Therefore, LD mapping is considered more efficient for gene discovery to meet the challenge of connecting sequence diversity with heritable phenotypic differences. However, care must be taken to avoid detection of spurious associations which may occur due to population structure and variety interrelationships. In this review, we discuss how LD mapping is suitable for the dissection of complex traits in wild silkworms (Antheraea mylitta).

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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• pp.45-48
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• 1996

The most research on facility layout problems ignored the actual shape of building where the activities(departments) are to be arranged. They also ignored the aisles between departments inside the building. In this paper, we present a genetic algorithm that searches a very good facility layout with horizontal aisles for two different cases with respect to the department shape. From the extensive experiments, the proposed genetic algorithm generated better layouts than the ones obtained by applying Tam's algorithm. It showed about 10% improvement of performance. We found out the best combination of genetic operators through the experiments.

• 교육시설
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• 제13권2호
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• pp.15-24
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• 2006

The 7th National Curriculum requires the part of a school library for supporting porformance evaluation, optional actives, and extracurricular activities. The school library which is very important part of school education needs support of necessary resources and adequate facilities for performing its functions effectively and efficiently. This reserch is based on the school library for present education to need. And, the objective of this reserch is to grasp the present condition of school library and to show improvement device for planning efficiently the time when school library is designed in future.

• Nuclear Engineering and Technology
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• 제44권7호
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• pp.799-806
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• 2012

In recent years, a new algorithm has been introduced to perform the regional overpower protection (ROP) detector layout optimization for $CANDU^{(R)}$ reactors. This algorithm is called DETPLASA. This algorithm has been shown to successfully come up with a detector layout which meets the target trip set point (TSP) value. Knowing that these ROP detectors are placed in a number of safety channels, one expects that there is an optimal placement of the candidate detectors into these channels. The objective of the present paper is to show that a slight improvement to the TSP value can be realized by optimizing the channelization of these ROP detectors. Depending on the size of the ROP system, based on numerical experiments performed in this study, the range of additional TSP improvement is from 0.16%FP (full power) to 0.56%FP.