• The Journal of the Korea Contents Association
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• v.9 no.8
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• pp.99-112
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• 2009

The research is to develop U-IT Technology Transfer Re-auction System Model for technology transfer enable transactions of buyer-oriented. The buyer sends condition technology parts and data informations to provider. The First step, The buyer sends condition technology parts and data informations to provider. The Second step, the buyer's technology and conditions in the First step will be transferred to the DB of a provider who can provide that technology. The Third step, a provider can bid after inputting the conditions. The Fourth step, the buyer decides the ranking of successful bids in condition-optimized auction process. The Fifth step, the buyer invites a provider to be a successful bidder. The last step, if there's no successful bid within the period, the sale considered failed. The buyer-oriented re-auction system is that the deal will become extinct automatically when its sale failed more than two times.

• Journal of the Korean Society of Propulsion Engineers
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• v.20 no.4
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• pp.50-58
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• 2016

Korean Space Launch Vehicle (KSLV-II) Propellant Supply System charges liquid oxygen and kerosene to each propellant tank for the stages. To charge the launch vehicle propellant tank safety, the propellant charge flow rates and scenarios should be defined. First, the Propellant Supply System was modeled with 1D flow analysis program. The control valve capacity and orifice size were calculated by performing the 1D steady state simulation. Second, the 1D transient simulation was performed by using the steady state simulation results. As propellants were being charged at the each tank, the increased tank liquid level decreases the charge flow rate. Consequently, the proposed supply system satisfies the required design charging conditions.

• Journal of Plant Biotechnology
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• v.37 no.2
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• pp.220-227
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• 2010

Fatty acids in seed oil from plants are essential for human nutrients and have been used for industrial purpose. The growing demands of seed oil as food resources and feedstocks for industrial uses have attempted to modify fatty acid composition and to increase oil content in transgenic plants. However, production of unusual fatty acids in transgenic plants are limited, which is not synthesized the level same as original plants. This bottleneck was common for production of several unusual fatty acids in transgenic plants and suggests that there is different for substrate preference in oil metabolic pathway enzymes between host oil plants and original wild plants. Review of acyltransferases involved in acyl-editing and seed oil accumulation of oil plant and wild-plant producing unusual fatty acids will design strategies to maximize the production of unusual fatty acids in transgenic plants. In here, we identified eleven acyltransferase genes in castor based on sequence homology, which will be useful to increase hydroxy unusual fatty acids in transgenic plants.

• Journal of Korea Water Resources Association
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• v.55 no.7
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• pp.515-529
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• 2022

Identifying the available water resources amount is an essential process in establishing a sustainable water resources management plan. Dam facility is a major infrastructure storing and supplying water during the dry season, and the water supply yield of the dam varies depending on dam inflow conditions or operation rule. In South Korea, water supply yield of dam is calculated by reservoir simulation based on observed historical dam inflow data. However, the water supply capacity of a dam can be underestimated or overestimated depending on the existence of historical drought events during the simulation period. In this study, probabilistic inflow data was generated and used to estimate the appropriate range of the water supply yield of hydropower dams. That is, a method for estimating the probabilistic dam inflow that fluctuates according to climatic and socio-economic conditions and the range of water supply yield for hydropower dams was presented, and applied to hydropower dams located in the Han river in South Korea. It is expected that the understanding water supply yield of the hydropower dams will become more important to respond to climate change in the future, and this study will contribute to national water resources management planning by providing potential range of water supply yield of hydropower dams.

• Culinary science and hospitality research
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• v.22 no.4
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• pp.128-142
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• 2016

This study was carried out to investigate the effect of memory impairment in rats fed alcohol liquid diets. The rats were randomly divided into 4 groups. While the control(C) group received a diet containing 12% of the daily calories with isocarbohydrate, the other groups received a diet containing 12% of the daily total calories with 36% Soju (A), 25% Cynanchi wilfordii radix liquors (WA), and 25% Polygoni multiflori radix liquors (RA) for 6 weeks. After 6 weeks, ADH activity in the brain tissue of the Group A was found to be significantly lower than Group C but significantly higher than both Groups WA and RA(p<0.05). ADLH activity was revealed to be the highest in the Group WA (p<0.05). The concentration of acetaldehyde, a highly toxic metabolite, was the highest in the Group A, but its concentration decreased significantly if fed a liquid diet containing WA. The concentration of acetylcholine, which has a high correlation with memory impairment, was significantly lower in Group A, although Group RA group was the highest compared to the other groups (p<0.05). AChE activity of the Group A was higher than Group C but lower in Groups WA and RA (p<0.05).

• Defense and Technology
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• no.12 s.286
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• pp.66-73
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• 2002

점점 첨단/복합화.고가화 되어 가고 있는 무기체계 요구에 부응할 수 있또록 국내 방위산업의 공급능력/수준을 향상시키기 위해서는 방위산업 및 기술기반을 군사력의 일부로 인식하는 사고의 전환이 시급하며, 국방연구개발 투자의 확대 및 효율적 집행과 더불어 세계시장 지향적인 방위산업으로의 구조조정이 요망된다. 미국과 유럽국가들의 거대 방산업체들이 세계 방산시장을 과점적으로 지배하고 있는 방산현실에서 이들 기업들과 경쟁할 수 있는 분야와 틈새시장을 발견하여 우리의 독자적인 방산능력을 제고시키는 노력과 더불어 방산업체 차원에서의 국제협력을 통한 생존전략의 모색이 시급하다.

• Journal of the KSME
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• v.54 no.1
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• pp.38-42
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• 2014

운영 중인 가스배관에는 매우 낮은 빈도이긴 하지만 부식, 기계적 손상, 내압, 토양하중, 차량하중, 지반침하, 열하중, 균열 등이 생길 수 있다. 안정적인 가스공급과 안전한 배관 운영을 위해서는 손상배관에 대한 건전성 평가가 필요하다. 평가 방법은 국내외 규격을 적용하거나 배관 운영회사에서 독자적인 건전성 평가방안을 적용하면 된다. 결함평가 방안은 고압 가스배관뿐만 아니라, 중저압 가스배관, 압력용기, 원자력 배관, 화학플랜트 배관 등에 필요한 사항이다.

• 전기의세계
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• v.43 no.4
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• pp.27-34
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• 1994

전기기기의 설계, 제작기술 및 재두의 발달에 따라 근래의 발.변전 설비의 고장발생빈도는 매우 낮은 편이다. 그러나 이들 설비에 일단 고장이 발생하면 손상이 클 뿐 아니라 복구에 장기간이 소요될 경우가 많아 전력공급에 차질을 빚게 된다. 따라서 예상되는 각종 고장과 이상상태에 대비한 보호계전장치가 필요하게 되며 개별적인 보호장치에 적용 여부는 원칙적으로 그 고장에 대한 보호장치의 시설, 운전, 보수비용과 효과를 보호장치를 구비하지 않았을 경우 그 고장에 따른 위험성과 비교하여 판단하게 되나 실제로는 발.변전설비의 종류 및 특성, 용량등에 따라 경험적으로 선정되는 경우가 많다. 발.변전설비의 용량은 대체오 수백 KVA급으로부터 500MVA 또는 1000MVA정도의 대용량기기까지를 대상으로 보호계전기술을 서술한다.

• Proceedings of the KSCN Conference
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• 2004.05a
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• pp.428-429
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• 2004

유아기는 식습관이 형성되고 신체성장도 활발한 시기로 올바른 영양공급이 중요하다. 그러나 유아들에서 아침 결식, 편식, 비만, 빈혈 등의 문제가 증가하고 있어 이들의 건강 상태가 우려되고 있다. 영양교육은 영양중재의 유용한 방법으로 최근 들어 대상자의 특성을 고려한 맞춤식 영양교육의 필요성을 나타내는 식행동변화모형과 개인적 요인과 환경적요인의 상호 작용이 식행동을 결정하는 데 중요하게 작용한다는 사회인지론이 주목을 받고 있다.(중략)

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11a
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• pp.404-407
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• 2003

현재 국내외 많은 업체들이 ERP패키지를 선보이고 있다. 그러나 국내 기업들과 ERP공급업체에 따르면 구축된 ERP로 인해 재무회계, 관리 부문에서는 어느 정도 효과를 거두고 있으나 생산 및 출고 등 물류와 관계된 자동화 부문에서는 미흡한 효용성을 보이고 있다. 따라서 본 논문에서는 유류업체의 특성에 맞는 전사적자원관리 시스템을 개발하여 유류중소업체에서 연구개발에 필요한 여러 가지 정보인 사회적인 시세, 특정 기능의 제품에 대한 선호도, 물품 만족도 등 고객에 대한 정보가 통계적으로 반영될 수 있도록 하였다.