• Proceedings of the Korean Information Science Society Conference
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• 2007.06a
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• pp.39-40
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• 2007

• Proceedings of the KSR Conference
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• 2004.10a
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• pp.533-538
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• 2004

Rolling Stock life cycle can not provide weakness of environment due to the absence DB on about environment information for contaminant, expense analysis on each step which consists of raw material-design-manufacture-running-waste step. In order to estimate environmental impacts on LCA for rolling stock system, scientifically and internationally fair standards of assessment method for pursuing environmental friendly in environment regulation policy, application of LCA system is proposed and introduced in the present paper.

• Journal of Sericultural and Entomological Science
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• v.34 no.1
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• pp.21-29
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• 1992

In the experiment, gene actions were analyzed for seven silkworm varieties in order to obtain basic information on their genetic improvement by diallel crosses. The results obtained were summarized as follows : in analysis of variance, significantly maternal and reciprocal effects were observed for all character except female cocoon shell percentage and female pupal weight. Over-dominance was shown by Vr-Wr graphic analysis in three characters such as female cocoon weight, female and male pupal weight, and partial dominance in five characters such as male cocoon weight, cocoon shell percentage in both female and male. Component of genetic varience analyzed for five characters such as male cocoon weight, cocoon shell weight, cocoon shell percentage in both female and male showed that additive effects were higher than dominant effects, and female cocoon weight showed dominant effects higher than additive effects. Heritability of narrow sence was higher more than 0.51 and heritability of broad sence was higher more than 0.77 in all characters except for female pupal weight. The directions of dominance were negative for female cocoon shell weight and somewhat higher for female and male cocoon shell percentage. Meanwhile cocoon weight, pupal weight in both female and male showed positive in the direction of dominance.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.2697-2704
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• 2011

Fire resistance of a floor of a railcar is prescribed in the "Guidelines of standard of railcar safety (Minister of Land, Transport and Maritime Affairs, 2010)". A floor of a railcar should retain its fire resistance for 15 or 20 minutes according its risk level. To evaluate fire resistance of the floor materials which are composed of ceramic board or aluminum foam with weight lightening, fire resistance of railcar floor is numerically analyzed.

• Proceedings of the Korea Database Society Conference
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• 1994.09a
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• pp.199-212
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• 1994

데이터베이스 산업이란 널리 산재되어 있는 각종의 정보를 효과적으로 검색하고 이용하기 위해서 데이터베이스화하여 유통시키는 것을 말한다. 따라서 정보화 사회로 전환되고 있는 현시점에서 데이터 베이스 산업에 대한 관심과 중요성이 나날이 증가하고 있다. 데이터베이스 이용자수가 91년 27만명, 92년 35만명［한국전자통신연구소, 1994］으로 계속 증가되는 추세이다. 또 데이터베이스 서비스 업체수도 91년 80개 업체에서 92년 215개 업체, 상용 데이터베이스 수도 91년 115개에서 92년 354개로 2배 이상 신장되었다.［한국정보통신진흥협회, 1991/92］(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.04a
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• pp.369-371
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• 2008

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2000.05a
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• pp.137-140
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• 2000

The purpose of this study is to see the effect of SVE (Soil Vapor Extraction) and Bioventing (biostimulation) hydrocarbon contaminated areas. The removal rate of VOC for three weeks were 17.43 kg on 3.6 ㎥/hr at steady-state. In the application of Bioventing, every flow rate were tested, and it was found that 4.0 ㎥/hr were adequate for best control of the system. At this stage, the addition of microbial agent accelerated the biodegradation of the hydrocarbon.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2007.10a
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• pp.471-472
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• 2007

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.10a
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• pp.457-459
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• 2008

• Proceedings of the Korean Information Science Society Conference
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• 2008.06a
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• pp.257-258
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• 2008