• Journal of Korea Society of Industrial Information Systems
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• v.14 no.1
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• pp.43-55
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• 2009

We consider a Direct Input Output Manufacturing System(DIOMS) which has a number of machine centers placed along a built-in Automated Storage/Retrieval System(AS/RS). The Storage/Retrieval (S/R) machine handles parts placed on pallets for the operational aspect of DIOMS and determines the optimal operating policy by combining computer simulation and genetic algorithm. The operational problem includes: input sequencing control, dispatching rule of the SIR machine, machine center-based part type selection rule, and storage assignment policy. For each operating policy, several different policies are considered based on the known research results. In this paper, using the computer simulation and genetic algorithm we suggest a method which gives the optimal configuration of operating policies within reasonable computation time.

• Journal of Korean Society of Forest Science
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• v.71 no.1
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• pp.1-8
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• 1985

In the study, the log pricing process by region and marketing agencies was surveyed in order to analyze the domestic timber marketing situation, and to propose improvements. The results obtained show that the market channel configuration for domestic timber is simple compared with that for the agricultural products. The log felling contractor is the lead agency in the stumpage market because of the lack of market information of most forest owners. However, the log assembler, who has ample funds, seized leadership in the market channel because most felling contractors, deal only with small timber quantities, and are usually short of funds. Also the variety of log scaling methods is a serious factor confusing domestic timber marketing. Therefore, the following steps are proposed; 1) the provision of market information to forest owners, 2) the institutional control of felling contractors, 3) the establishment of cooperative log collection centers, 4) the improvement of log quality.

• Journal of the Korea Society of Computer and Information
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• v.8 no.3
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• pp.1-8
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• 2003

The growth of Internet is the main factor that activates the Digital Contents Market. However the Digital Contents Market could be shrunk by an illegal reprinting and imprudent using. Therefore we urgently need a new technology which can prevent the contents from illegal using, illegal reprinting and imprudent using. We developed the system prohibits a imprudent using in order to activate the Digital Contents Market. We developed the system protects the contents safely by removing the dangerous for the illegal reprinting with providing the encoded contents and the system removes the contents according to the number of usage and the user authentication through Network.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.31 no.2
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• pp.47-53
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• 2013

• Photonics industry news
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• s.13
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• pp.30-37
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• 2002

중국 광전자산업은 발전초기단계의 산업으로서 국내에 아직 기초 자료와 정보가 부족한 실정이다. 본 고에서는 중국 광전자산업 규모, 경쟁우위 광전자 기업, 광통신 유통구조 및 광전자산업단지 등을 분석하여 유용한 정보를 제공하고자 한다.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.24 no.4 s.203
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• pp.65-74
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• 2006

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.9
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• pp.60-65
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• 2002

지식 정보의 생산을 활성화하기 위해서는 데이터의 수집 및 생성, 가공, 관리, 검색하는 기술과 지식정보와 지식 정보간의 연동, 지식정보와 이용자간의 유통 등의 지식정보 시스템과 관련된 기술을 상호 호환할 수 있도록 이에 관한 적절한 지침 및 표준이 필요하다.

• 발명특허
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• v.6 no.5 s.63
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• pp.37-37
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• 1981

• 발명특허
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• v.6 no.8 s.66
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• pp.43-43
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• 1981

• 발명특허
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• v.7 no.4 s.74
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• pp.47-49
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• 1982