• 한국조리학회지
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• 제10권4호
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• pp.133-144
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• 2004

The object of this study was to investigate the effect of food material supply system on productivity in institutional foodservice. This study was examined by food service companies were enlisted under the influence of domestic enterprises, which used central supply system for the central kitchen operation and efficiency food material circulation system. The main result of this study was as follow: According to the analysis of these data, enlargement of efficiency in food utilization was placed at rising of utilization Processing food materials. And resulted in good expectations such as competitive strengthening, quality capacity strengthening and improvement in sanitary conditions from a productivity point of view.

• Journal of Plant Biology
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• 제14권3호
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• pp.60-65
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• 1971

In order to observe the factors affecting light utilization efficiency in the canopy of a rice crop grown in reclaimed saline areas in Korea, 22 varieties of rice were cultured at the average salt concentration of 6.05mmhos/cm $25^{\circ}C$, (0.39%) in saline soils and non-saline silty loam soils. The inhibition of tillering ability by salt damage at the maximum tillering stage was greater than to growth in height. A significant direct correlation was observed between both ratios and salt concentration with each variety. In the salty areas the length of the flag leaf of the maturing stage showed a positive correlation with the production of rough rice while other living leaf showed a negative correlation. LAI of maturing stage was less in the salty area than in the non-salty area, while the former showed higher ratio in net assimilation and translocation to head with greater RGR before and after the heading stage.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.571-576
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• 2001

This paper presents the utilization of waste concrete as vertical drain material. The materials used as vertical drain material were the waste concrete, obtained from the demolished apartments or concrete structure and sand. In this study, laboratory model test was performed to investigate settlement and bearing capacity between sand compaction pile and waste concrete compaction pile. The results of laboratory model test showed that the improvement efficiency of soft ground by waste concrete compaction pile was better than sand compaction pile.

• 산업융합연구
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• 제5권2호
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• pp.21-32
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• 2007

This paper deals with the sequencing problem in the operation of the manufacturing systems with the constraint of buffer capacity. Some of studies for this theme have been progressed for several years. And then most of them considered only one objective, such as maximum lateness, machine utilization, makespan, mean flowtime and so on. This study deal with two objectives of the delivery for customers and the idle time of machines for producers. For the decision of sequence, the utility function is used. The developed heuristic algorithm presents a good solution. Through a numerical example, the procedures of the job sequencing is explained.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.646-647
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• 2015

Green building information used by the AEC industry is diverse and extensive), causing difficulties for personnel regarding the collection and utilization of information in the form of inaccurate searches about related laws, inefficient management of searched information and overlapping works. Therefore, this research aims to propose a law search system utilizing metadata for more accurate and efficient searches of green building information. The proposed system is expected to contribute to improve productivity of construction projects by reinforcing the accuracy and efficiency of searches for the collection and utilization of green building information.

• Journal of Biosystems Engineering
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• 제14권1호
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• pp.49-57
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• 1989

• 한국태양에너지학회 논문집
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• 제35권5호
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• pp.11-19
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• 2015

In this paper, EP-Kalina cycle applying liquid-vapor ejector and motive pump is newly proposed. In this EP-Kalina cycle, the liquid-vapor ejector is used to increase pressure difference between inlet and outlet of the turbine. Also the motive pump enhances the performance of liquid-vapor ejector, resulting in increase of system efficiency of OTEC cycles. The comparison cycles in this study are basic, Kalina, EKalina and EP-Kalina ones. The pump work, net power, APRe, APRc, TPP and system efficiency of each cycle are compared. In case of net power, EP-Kalina cycle is lowest among the cycles due to the application of the motive pump. But, the net power difference of cycles seems to be minor since the pump work of cycles is merely about 1kW, compared to turbine gross power of 20kW. The system efficiency of EP-Kalina cycle shows 3.22%, relatively 44% higher than that of basic OTEC cycle. Therefore, the system efficiency is increased by applying the liquid-vapor ejector and the motive pump. Additional performance analysis is necessary to optimize the proposed EP-Kalina cycle.

• KSBB Journal
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• 제19권4호
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• pp.257-262
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• 2004

최근, 미세조류에 대한 생물공학적 관심이 급격히 증가하고 있으며 이의 응용범위는 식품이나 제약, 화장품 등 다양한 구도로 확장되어지고 있다. 고농도의 미세조류 배양을 위해서는 빛이 핵심적 제한요소로 작용되어지며 빛의 투과 깊이나 강도에 따라 균체의 성장속도가 결정되어지게 된다. 본 연구에서는 다양한 빛의 투과경로와 빛을 받는 면적/배양액의 부피 비율, 조도 그리고 단계적 조사에 따른 Chlorella sp.의 성장률을 조사하여 빛이 미세조류에 미치는 영향을 알아보았으며, 본 연구에 적용된 값들 중 4 cm의 직경, 57.6%의 면적/부피 비율, 62 $\mu$mo1/$m^2$/s의 조도에서 Chlorella sp. 성장에 필요한 빛 에너지를 가장 효율적으로 이용함을 확인할 수 있었다.

• 한국멀티미디어학회논문지
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• 제8권1호
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• pp.119-127
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• 2005

국내의 많은 대학들은 매년 교육전산망에서 망 서비스 업자를 공개 입찰로 선정한 결과에 따라 교내망을 자신에 맞게 다양한 방법으로 외부망과 연결시키고 있다 그런데 이들 중 특히, 여러 외부망을 연동시키는 대학에서는 연동 비율에 따라서 전산망 운영 방식을 결정하는데 있어 보다 복잡한 문제에 부딪치고 있다. 따라서 이러한 대학들은 자신의 전산망 운영 방식을 보다 적합하게 결정할 수 있는 지원체계가 시급하다. 본 논문은 전국의 대학전산망 운영자를 대상으로 한 트래픽 관리에 대한 설문조사를 바탕으로 하여 회선 이용율에 기반한 트래픽 효율성을 분석하였다. 그리고 이를 이용하여 두 사업자를 동시에 채택하고 있는 대학의 효율적인 외부망 연동 전략 방안을 제시한다.

• 터널과지하공간
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• 제22권1호
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• pp.1-11
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• 2012

열에너지 저장은 고온 또는 저온의 열에너지를 임시 저장하는 것으로서 에너지 수요와 공급 사이의 불균형을 줄일 수 있고, 이를 통해 에너지를 절약하고 에너지 이용효율을 향상시킬 수 있다. 특히 간헐적으로 에너지를 생산하는 신재생에너지의 경우 에너지 저장 장치와의 조합은 필수적이다. 또한 지하 암반의 낮은 열전도도와 높은 열용량을 이용하여 지하에 열에너지를 저장하는 경우 열손실을 최소화하여 추가적인 효율 향상이 기대된다. 본 고에서는 지하 열에너지 저장 기술을 조사 분석하고 스웨덴에 암반공동내 열에너지 저장 사례를 소개하였다.