• Journal of Korean Institute of Industrial Engineers
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• v.16 no.2
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• pp.81-89
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• 1990

Transfer pricing mechanism is applied to the problem of input buffer size in the context of interfacing a flexible manufacturing system with multiple following production lines. The size of the input buffers can be determined economically by using non-linear transfer pricing either in a decentralized organization or in a centralized organization. Under the certain conditions, input buffer size determined from this non-linear transfer pricing is more economical than the traditional economic lot size model. The benefit comes from transferring part of FMS' inventory to the following production lines. And this non-linear transfer pricing makes sense if the FMS' unit inventory holding cost is high enough.

• Journal of Intelligence and Information Systems
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• v.6 no.2
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• pp.49-62
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• 2000

본 논문은 향후 인터넷 사용의 많은 두 부분이 현재의 인간 사용자에서 지능형 에이전트로 옮겨져 갈 때 현 인터넷 사업 모형에 영향(Impact)으로 작용할 수 있는 요소들을 분석하고, 이로 야기되는 새로운 사업 모형의 출현 및 현 사업 모형에 예상되는 변화에 대하여 살펴보고자 한다. 지능형 에이전트로 인하여 인터넷 사업에 있어서 예상 가능한 주요 변화를 사업 모형 관점에서 제품, 서비스, 정보 흐름(Flow)의 변화, 참여자의 역할(Role)의 변화, 수익원천(Revenue)의 변화, 참여자간의 혜택 (Benefit)의 변화, 비용분담(Cost Distribution)구조 변화라는 다섯 가지 측면에서 현재의 인터넷 사업에 있어서 배너광고 모델, 가격책정 모델, 중개자 모델, 브랜드 및 명성 효과, 디지털 카르텔 등의 주요 현상과 결부시켜 살펴본다. 이를 통하여 향후 지능형 에이전트 기반의 사업 모형에 대비한 전략적 시사점(Imp1ications)을 제공하고자 한다.

• Journal of The Korean Society of Agricultural Engineers
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• v.47 no.2
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• pp.25-32
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• 2005

In evaluation of public works, its components related with benefit and cost in feasibility analysis can be classified to quantative and qualitative elements, To evaluate qualitative components which can not be calculated by numerical value, several methods are used to assess relative importance. AHP (Analytic Hierarchy Process) is representative method which can evaluate importance, but it has difficulties in organization of expert group, execution of question, and subjective decision of questioner. Information measure technique can be used to evaluate these qualitative importance of environmental and social components in public works planning. In result of comparing importances of AHP and information measure technique, it has statistical significance in of road project.

• 유체기계공업학회:학술대회논문집
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• 2006.08a
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• pp.367-370
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• 2006

Performances of multiple surrogate models are evaluated in a turbomachinery blade shape optimization. The basic models, i.e., Response Surface Approximation, Kriging and Radial Basis Neural Network models as well as weighted average models are tested for shape optimization. Global data based errors for each surrogates are used to calculate the weights. These weights are multiplied with the respective surrogates to get the final weighted average models. The design points are selected using three level fractional factorial D-optimal designs. The present approach can help address the multi-objective design on a rational basis with quantifiable cost-benefit analysis.

• Asia pacific journal of information systems
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• v.12 no.2
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• pp.1-23
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• 2002

A research model was developed to examine the relationship between the anticipated benefits of electronic commerce and competitive strategies. A survey questionnaire was sent to 2000 electronic shopping malls in Korea, and 102 usable responses were obtained. The survey asked about the anticipated benefits from using electronic commerce. The survey also asked about three strategies that they have been following to achieve business competitiveness. The results provide useful guideline to develop appropriate strategies and plans for effectively deploying and managing the use of the electronic commerce. Customer responsiveness was the most important factors among six benefit factors, namely customer responsiveness, market responsiveness, economies of production, internal organizational efficiency, overall performance, and flexibility. Overall performance also predicted a focus strategy whereas flexibility predicted a cost leadership strategy.

• Journal of Korean Society of Rural Planning
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• v.10 no.1 s.22
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• pp.1-7
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• 2004

There are recently many studies on evaluating the economic value of multi-functionality of rural areas. However, the regional difference of economic value leads a problem of different evaluation on its economic value for each region in its application to government policy. This problem causes an increase in cost because it creates restriction in policy decisions which put their importance on the time of their execution. This study investigates the propriety of value transfer using Meta Analysis after evaluating the social and cultural value of rural areas among their functions based on CVM model. It finds that the regional difference in the willingness to pay is 0.13% to 31.42%.

• Journal of the Korea Society of Computer and Information
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• v.20 no.12
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• pp.175-180
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• 2015

It is important to maintain information system (IS) following the business and institutional change. Even if successfully developed information systems, we cannot gain the benefit from the systems without the proactive maintenance activities. However, the importance of IS maintenance has not been considered as much as the system development, and we don't have any specific performance management structure. The objective of this study is to identify the relationship between IS maintenance activities and utilization. For empirical test of the hypothesis model, the sample data is collected from public information system sites. Results from multiple regression analysis reveal that proactive maintenance activities including IS maintenance cost increase, improving functionality, and enhancing ease of use have a causal effect on the IS utilization.

• Journal of the Korea Society for Simulation
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• v.14 no.3
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• pp.119-127
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• 2005

Web services and their composition (web processes) are promising technologies to efficiently integrate disparate software components over various types of systems. As many web services are nowadays available on Internet, quality of services (QoS) and performance/cost become increasingly important to differentiating between similar service providers. In this work, we introduce sPAC (Web Services Performance Analysis Centre) and show how customers can benefit from sPAC to consider performance in composing and commercializing web services. sPAC 1) helps users to graphically describe the workflow of web services, 2) invokes web services to test out performance for light load conditions, 3) automatically converts the web services and the flow between them into a simulation model, 4) conducts extensive simulations for heavy load conditions and various usage patterns, and 5) reports analysis results and estimation data for the web services.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.135-141
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• 2002

Recently, in the metro railways, researches on the skip-stop operation and development of the double deck train-set are active, which is to improve the service quality through reducing the passenger travel time and suppling seating service. Constructing new line or reforming the existent line needs huge amount of budget. Therefore, previous to start these large scale projects, scrutiny on benefit improvement, cost reduction and those optimal trade-off is indispensable. In this paper, a quantitative analysis to determine the optimal train service patterns and train-sets necessary is proposed, under the skip-stop operation condition in the metro railways. The analysis models are formulated in mathematical programming model, and tested validity using the LINGO 7.0.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.103-105
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• 2015

본 논문에서는 재해 예방 및 복구사업 경제성평가 모델 개발을 위해 경제성 평가 활용현황 및 문제점을 정리하고 경제성 평가모델개발방안 도출 등의 연구를 수행한다. 경제성 평가기법의 연구개발 현황 파악과 경제성 평가방법의 당면 과제 도출로부터 조사 범위 및 방법을 결정하고 성과물에 대한 활용방안 또한 결정에 참고하도록 한다. 기존 연구 및 풍수해 관련 자료의 분석결과 경제성 평가는 BCA가 일반적으로 사용되여 Benefit과 Cost의 고려범위에 따라 연구방법과 내용이 각기 다른 실정이었다. 또한 대부분의 연구는 정량화가 쉬운 직접비용에 치중되어 있으며, 고려 범위가 추상적인 경우는 과다하게 측정되는 경향이 있었다. 한편, 피해 발생 시 현재는 NDMS에 피해액관련 데이터 입력하여 활용하고 있으며 이는 관련보상 법규가 없던 과거조사자료와 최근의 조사자료사이에 큰 차이를 보이고 있다.