• Food Science and Biotechnology
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• 제15권5호
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• pp.778-780
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• 2006

High performance liquid chromatography (HPLC) was used for the analysis of the lignans eleutheroside B and eleutheroside E in the fruits of Acanthopanax species. A reverse-phase system using a gradient of $H_2O$ and acetonitrile as the mobile phase was developed and detection was at 210 nm. The analysis was successfully carried out within 20 min. The content of eleutheroside B and eleutheroside E in Acanthopanax species was measured in the fruits of A. senticosus (0.58 and $1.66\;{\mu}g/mg$, respectively), A. sessiliflorus (1.15 and $8.49\;{\mu}g/mg$, respectively), A. koreanum (2.16 and $1.80\;{\mu}g/mg$, respectively), and A. divaricatus (1.06 and $7.08\;{\mu}g/mg$, respectively).

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집A
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• pp.108-113
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• 2001

Recently, the mechanical structures applied to many industrial products, especially in electronic products, appear to be miniaturized and complicated. This trend makes it difficult to analyze the stress distribution of those mechanical structures and generates new challenges for precise measurement of strain. Therefore, generally most of those cases largely depend on the finite element analysis. But the development of optical metrology which has the capability of non-contact, full-field and precise measurement makes it possible to solve these measuring problems. Among the optical measurement techniques, the electronic speckle pattern interferometry (ESPI) has been developed and considered as one of the most useful tools for measuring displacement and deformation. But the shortage of recognition and difficulties of measurement have limited its industrial applications in spite of its excellent capabilities. Therefore in this study, in order to enhance the industrial application of ESPI, the measurement of in-plane displacement of mechanical structure with ESPI, which is applied to washing machine and cannot be measured by strain gauges, was performed. And the verification of validity of FEA results was also done.

• 한국산학기술학회논문지
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• 제14권10호
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• pp.4847-4854
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• 2013

소비자들은 제품의 질을 판단할 때 자신이 만족스럽지 않으면 제품의 질이 좋다고 인식하지 않는다. 서비스산업에서도 마찬가지이다. 본 논문은 서비스산업에서 서비스품질(물리적, 인적 요인)이 고객행동(구전, 재이용)에 어떤 영향을 미치는지, 서비스 관계품질(고객만족, 신뢰)이 서비스품질과 고객행동에 어떤 매개역할을 하는지에 대해 실증자료를 통해 연구하였다. 설문을 이용하여 자료를 수집한 후 SPSS로 분석한 결과 서비스 품질은 고객행동에 가장 중요한 요소임을 확인할 수 있었고, 서비스 관계품질이 서비스품질과 고객행동에 밀접하게 매개역할을 하고 있는 것으로 실증되었다.

• 산업경영시스템학회지
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• 제37권1호
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• pp.60-67
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• 2014

This paper considers an inbound ordering and outbound dispatching problem for multi-products and multi-vehicles in a third-party distribution center. The demands are dynamic over a discrete and finite time horizon, and replenishing orders are shipped in various transportation modes and the freight cost is proportional to the number of vehicles used. Any mixture of products is loaded onto any type of vehicles. The objective of the study is to simultaneously determine the inbound lot-sizes, the outbound dispatching sizes, and the types and numbers of vehicles used to minimize total costs, which consist of inventory holding cost and freight cost. Delivery time window is one of the general dispatching policies between a third-party distribution center and customers in practice. In the policy, each demand of product for a customer must be delivered within the time window without penalty cost. We derive mixed integer programming models for the dispatching policy with delivery time windows and on-time delivery dispatching policy, respectively and analyze the effect on a dispatching policy with delivery time windows by comparing with on-time delivery dispatching policy using various computational experiments.

• 한국산업정보학회논문지
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• 제13권3호
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• pp.16-22
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• 2008

블루투스통신 기술은 많은 전자통신시스템에 응용되고 있다. 본 논문은 블루투수통신 기술을 이용한 임베디드 시스템개발이다. 본 논문에서 개발한 시스템은 블루투스를 사용하여 주문 시스템에 적용함으로서, 기존의 주문 단계에서 종업원을 부르고, 주문하는 단계를 줄였다. 주문 단계가 줄어들었기 때문에 주문 시간을 단축할 수 있게 되었고, 손님이 직접 주문 시스템을 이용하여 메뉴를 선택하고 확인 후 주문을 하기 때문에 주문 중에 생길 수 있는 실수를 줄였으며, 종업원을 부르기 위한 소음을 해결 하였다. 그리고 주문 시스템과 카운터/주방시스템을 연결한 시스템을 구현함으로서 매출정리를 따로 할 필요가 없게 되었다.

• Food Science and Biotechnology
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• 제16권1호
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• pp.37-42
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• 2007

The biotransformation of monoterpenic agro-industrial wastes (turpentine oil and essential orange oil) was studied. More than 40 fungal strains were isolated from Brazilian tropical fruits and eucalyptus trees and screened for biotransformation of the waste substrates. Solid phase microextraction was used to monitor the presence of volatile compounds in the headspaces of sporulated surface cultures. The selected strains were submitted to submerged liquid culture. The biotransformation of R-(+)-limonene and ${\alpha},\;{\beta}-$ pinenes from the oils resulted in ${\alpha}-terpineol$ and perillyl alcohol, and verbenol and verbenone, respectively, as the main products. The selected strains were also placed in contact with ${\alpha}-$ and ${\beta}-$ pinenes standards. It was confirmed that verbenol, verbenone, and ${\alpha}-terpineol$ were biotransformation products from the terpenes. A concentration of 90 mg/L of verbenone was achieved by Penicillium sp. 2360 after 3 days of biotransformation.

• Industrial Engineering and Management Systems
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• 제11권4호
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• pp.346-352
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• 2012

While systems engineering has been widely applied to complex system development, some evidences are reported about major budget and schedule overruns in systems engineering applied. On the other hand, many organizations have been deploying Design for Six Sigma (DFSS) to build Six Sigma momentums in the area of design and development for their products and processes. To explore the possibility of having a DFSS complement systems engineering process, this process reviews the systems engineering with their categories of effort and DFSS with its methodologies. A comparison of the systems engineering process and DFSS indicates that DFSS can be a complement to systems engineering for delivering higher quality products to customers faster at a lower cost. We suggest a simplified framework of systems engineering process, that is, PADOV which was derived from the generic systems engineering process which has been applied to the development of T-50 advanced supersonic trainer aircraft by Korea Aerospace Industries (KAI) with technical assistance of Lockheed Martin. We demonstrated that each phase of PADOV framework is comprehensively matched to the pertinent categories of systems engineering effort from various standards.

• 대한기계학회논문집A
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• 제26권4호
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• pp.693-700
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• 2002

Recently, the mechanical structures applied to many industrial products, especially in electronic products, appear to be miniaturized and complicated. This trend makes it difficult to analyze the stress distribution of those mechanical structures and generates new challenges for precise measurement of strain. In order to solve this measurement problem many optical measurement techniques have been suggested. Among those, the ESPI(Electronic Speckle Pattern Interferometry) has been considered as one of the most useful tools. But the shortage of recognition and difficulties of measurement have limited its industrial applications in spite of its excellent capabilities. Therefore in this study, not only the verification of the FEA result but the enhancement of industrial application of ESPI was tried by measuring the in-plane displacement of mechanical structure with ESPI, which is difficult to be measured with strain gauge.

• 산업경영시스템학회지
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• 제30권2호
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• pp.99-105
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• 2007

According to the automated manufacturing processes followed by the development of computer manufacturing technologies, products or quality characteristics produced on the processes have measured and recorded automatically. Much amount of data daily produced on the processes may not be efficiently analyzed by current statistical methodologies (i.e., statistical quality control and statistical process control methodologies) because of the dimensionality associated with many input and response variables. Although a number of statistical methods to handle this situation, there is room for improvement. In order to overcome this limitation, we integrated data mining and robust design approach in this research. We find efficiently the significant input variables that connected with the interesting response variables by using the data mining technique. And we find the optimum operating condition of process by using RSM and robust design approach.

• KIEAE Journal
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• 제15권1호
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• pp.147-154
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• 2015

Environmental impact assessment techniques have been developed as a result of the worldwide efforts to reduce the environmental impact of global warming. By using the quantification method in the construction industry, it is now possible to manage the greenhouse gas is to systematically evaluate the impact on the environment over the entire construction process. In particular, the proportion of greenhouse gas emissions at the production stage of construction material occupied is high, and efforts are needed in the construction field. In this study, intended for concrete products for the construction materials, by using the LCA evaluation method, we compared the results of environmental impact assessment and carbon emissions of developing products that have been applied low-carbon technologies compared to existing products. As a result, by introducing a raw material of industrial waste, showed carbon reduction. Through a comparison of the carbon emission reduction effect of low-carbon technologies, it is intended to provide academic data for the evaluation of greenhouse gases in the construction sector and the development of low-carbon technologies of the future.