• Journal of the Korean Operations Research and Management Science Society
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• v.28 no.4
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• pp.105-114
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• 2003

This paper considers a single facility scheduling problem for the fabrication of components supporting the subsequent assembly into products. Each product consists of two types of components, one is common to all products and the other is unique to itself. The unique components are processed individually and the common components are processed in batches, and a distinct setup is incurred for the production of a batch of common components. Under the so-called “batch availability” environment, we propose an efficient dynamic programming(DP) procedure for the optimal sequencing and batching schedule with minimum total completion times of products in the situation that each product is said to be complete if both common and unique components of the product are finished. Computational results show that the proposed DB procedure is more efficient than the previous work which has considered the same problem as this paper.

• 한국정보통신설비학회:학술대회논문집
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• 2002.08a
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• pp.246-250
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• 2002

KT는 전송장치나 케이블과 관련하여 사내/외에서 발생하는 공사 내용을 파악하고, 피해 회선 관련 고객에 대한 공사내용 통보를 보다 효율적으로 하기 위하여 전송망 관련 공사정보를 관리하는 시스템을 개발하였다. 이 전송망 공사정보 관리시스템은 필요한 공사에 대한 문서를 생성/결재하고, 공사로 인한 피해 회선에 관련된 고객에게 공사내역을 홍보하는 문서를 생성하며, 입력된 자료들을 바탕으로 특정 기간동안 시행된 공사에 관련된 통계자료를 보여주는 기능을 갖도록 구현되었다. 본 고에서는 전송망 공사정보 관리시스템의 구성, 주요 기능 및 세부기능 등을 소개하고 이의 적극적인 활용을 통한 공사정보 및 고객관리의 효율화, 유용한 통계자료 생성 등의 기대효과에 대해 기술한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1998.10a
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• pp.59-65
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• 1998

A thematic land cover map of Pusan port area was developed using Landsat satellite TM(Thematic Mapper) image. Two types of digital data which are road and sea water layer are extracted from existing paper map were overlayed over the developed land cover map. SPIN-2(KNR-1000) image was utilized to make a facility map of JaSungDae port. SPIN-2 image, which has a cell resolution of 1.56 m showed higer accuracy than TM image, which has a cell resolution of 30 m for facility mapping. Overall, the techniques of digital mapping using satellite image are very useful, effective and efficient.

• Journal of Radiation Protection and Research
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• v.26 no.3
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• pp.327-331
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• 2001

The Pohang Neutron Facility based on an electron linac was constructed in order to construct the infrastructure for nuclear data production in Korea. It consists of a 100-MeV electron linac, a water-cooled Ta target, and an 11-m time-of-flight path. We measured the time-of-flight path length, the neutron energy spectra for different water levels inside the moderator, and the neutron total cross sections of polyethylene and copper by the transmission method.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.537-541
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• 2003

The synchronization of production-delivery artivities is one of crucial factors to get competitive collaboration benefits between the manufacturer and the retailor(s). There were several researches to study on He optimal delivery policy to minimize the total cost of integrated system of both manufacturer and retailor(s). In this research, we investigate the joint optimal shipment policy in case that a manufacturer produces multiple products sharing a single production facility in the manufacturer side and retailor(s) deploys JIT delivery pattern with equal-size shipment policy. We formulate this problem as a form of 'Common Cycle Approach' in classical ELSP (Economic Lot Scheduling Problem) and provide simple optimal solution procedure.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.20 no.5
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• pp.467-470
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• 2007

Application field of neutron beam is very broad including industry, medicine and science. But the research and development and use of neutron beam is restricted within in narrow limits in this country, because neutron beam facility is insufficient - a big research facility of nuclear reactor(HANARO) and some small industrial facilities which use radioisotope neutron source are available. This paper compare and investigate the results of experiment and numerical analysis of the discharge in the spherically convergent beam fusion device which were expected as a portable neutron source. The spherically convergent beam fusion device will offer stability in neutron production, possibility of movement for convenience, low construction cost and higher neutron flux than radioisotope neutron source. The star mode discharge which efficiently generate neutron, were observed at both results.

• Journal of The Korea Institute of Healthcare Architecture
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• v.11 no.3
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• pp.41-49
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• 2005

The purpose of this study is to analysis of convenience facilities for disabled in the municipal buildings. The physically disabled based on comparative analysis of disabilities code in Korea. For this objective, the code and guideline were analysed, and based on the analysis the checklist was developed for field observation. Convenience facilities ought to consider various aspects like size, and spatial composition of facilities, safety factors. and the present conveniences facility regulation. The research was conducted for municipal buildings located in Jeonbuk province. The procedures for research was made to investigate the finding of architectural related code and faculty standards. The results of investigation should be complemented and clarified guidelines in terms of accessibility and convenience which in detail. If the disabled would be convenient to use municipal buildings facilities, there should be no difficulties. As a result, convenience facilities for disabled in the municipal buildings has been improved that the design concept for the disabled person in general architectural planning.

• Journal of The Korea Institute of Healthcare Architecture
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• v.16 no.1
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• pp.35-42
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• 2010

As a functionally complicated facility, it requires rational strategy to accommodate multi-functional needs to plan a hospital. Ambulatory surgery units located in large hospitals have problems such as longer waiting time and congestion for patients due to complicated planning and organization within limited area, which raise needs for independent ambulatory surgery centers to enable smoother medical treatment for patients. To design an independent ambulatory surgery center, understanding of zoning and layout of each unit needs is particularly required. This study focuses on research of efficient zoning/organization of day surgery unit and circulation arrangements of ambulatory surgery centers by analyzing various examples abroad, which will eventually help finding appropriate way of planning domestic ambulatory surgery centers. Specific area of research includes ambulatory surgery process, programmatic requirements, spatial organization of the facility, layout of surgery unit and circulation arrangements of ambulatory surgery centers.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.602-603
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• 2008

본 논문에서는 전력계통의 안정적인 운영과 전기품질을 확보하고 전력수급 기본 계획 수립 등 전력설비 투자 계획에 활용하기 위하여 최근 새롭게 개정된 전력설비 정지관리 기준(電力設備 停止管理 基準)에 따라 전력설비 정지종류를 분류해 본다. 또한 계획정지, 비계획정지로 구분했던 2006년도 발전설비의 정지일수와 정지량등을 알아보고, 계획정지, 비계획정지, 운영예비초과정지 등으로 세분화된 분류에 따른 2007년도의 정지율을 계산하여 본다.

• Journal of Korean Institute of Industrial Engineers
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• v.31 no.3
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• pp.240-247
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• 2005

Today's hightech society requires thousands of different products which ultimately result in billions of tons of materials discarded, most of which end up in landfills. Therefore industrial circles could not help thinking about environmental problems by regulations of government or pressures of consumer. Generally, the related research subjects are classified into both of environmentally conscious manufacturing and product recovery, where product recovery aims to minimize the amount of waste sent to landfills by recovering materials and parts from old or outdated products by means of recycling and remanufacturing (including reuse of parts and products). In this research, we constructed a model for remanufacturing various goods using a single facility and developed a dynamic programing(DP) algorithm based upon the optimal solution characterization. We showed the efficiency of the developed DP algorithm with a numerical example.