• 산업경영시스템학회지
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• 제18권34호
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• pp.83-89
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• 1995

We call as plant life cycle the process starting from plant plan, design to disuse by way of construction, operation, but the plant facility inside it comes to changes of cope with various inner factor like blazing phenomenon and outer factor according to economic state. On the presumption of these factors, the problem is brought about how plant should be managed, this study attempt to suggest the conservation management through economic evaluation in investment design and alternative, that is, methodology connecting that of economical efficiency evaluation based on LCC(Life Cycle Costing) thinking method and facility management with that of life prediction.

• Journal of Information Technology Applications and Management
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• 제9권4호
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• pp.103-126
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• 2002

Information technology becomes more important to small and medium-sized enterprises. Due to the limit of manpower and capital investment in small and medium sized enterprises, how to successfully implement information systems is very critical issue. Previous research shows that lack of systematic methodology for evaluating and directing informatization is a major obstacle for successful implementaion of information systems. This study developed the methodology for evaluating and directing informatization in small and medium-sized enterprises. Empirical study has been conducted to find out major measurement of evaluation as well as validate the model. Finally the systematic guideline, evaluating information level and directing informatization, has been developed in order to help enterprises successfully implement information systems.

• 정보처리학회논문지D
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• 제16D권3호
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• pp.417-422
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• 2009

학술적 중요성 이외에 실무적으로도 정보시스템 효과성 측정을 위한 측정지표의 타당성 검증은 중요하다고 할 수 있다. 최근 정보시스템 또는 정보기술에 대한 투자가 급증함에 따라 민간기업에서도 IT 투자의 비즈니스 가치에 대한 관심이 높아지고 있다. 한편 민간부문뿐만 아니라 공공부문에서도 한정된 국가예산을 가지고 투입되는 정보화 부문에 대한 투자효과 평가의 필요성이 부각되고 있다. 최근 여러 정부부처별로 진행되고 있는 공공 정보화사업의 체계적이고 비교가 가능한 성과평가를 위해서 공공정보시스템 효과성의 개념을 정의하고, 이를 측정하기 위한 측정지표의 개발 및 타당성 검증이 요구되고 있다. 이에 따라 행정정보DB구축사업을 대상으로 공공정보시스템 효과성 측정지표의 타당성을 검증해 보았다.

• 한국수소및신에너지학회논문집
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• 제29권4호
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• pp.363-369
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• 2018

This paper considers the alternative way to mitigate cost for REC instead of Photovoltaic (PV) panels with Energy Storage System (ESS). This study starts from an economic analysis of a 1 megawatt PV system without ESS. Several assumptions have been applied in consideration of the current domestic situation. Based on this result, the economic efficiency of PV with ESS improved. However, the reliance on government subsidies was very high. The alternative way to cover the fluctuation power from renewable energy was reviewed with economical and technical way. In case the natural gas engine applied to PV, the IRR and Levelized Cost of Electricity (LCOE) can be improved without ESS. And if small amount of additional REC, the IRR can be improved up to investment level.

• 산업경영시스템학회지
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• 제45권4호
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• pp.21-30
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• 2022

To mitigate the environmental impacts of the energy sector, the government of South Korea has made a continuous effort to facilitate the development and commercialization of renewable energy. As a result, the efficiency of renewable energy plants is not a consideration in the potential site selection process. To contribute to the overall sustainability of this increasingly important sector, this study utilizes the Black-Scholes model to evaluate the economic value of potential sites for off-site wind farms, while analyzing the environmental mitigation of these potential sites in terms of carbon emission reduction. In order to incorporate the importance of flexibility and uncertainty factors in the evaluation process, this study has developed a site evaluation model focused on system dynamics and real option approaches that compares the expected revenue and expected cost during the life cycle of off-site wind farm sites. Using sensitivity analysis, this study further investigates two uncertainty factors (namely, investment cost and wind energy production) on the economic value and carbon emission reduction of potential wind farm locations.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(II)
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• pp.326-333
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• 2003

Railway system is consisted of resources such as rail-line, signalling system, and railcars. It is necessary to efficiently utilize these limited and expensive resources as much as possible up to given line capacity. So far, we treat the line capacity as the criteria for evaluating investment alternatives or for restricting train frequencies, and this criteria is calculated statical and experimental numerical formula. But, line capacity has special attribute that changes dynamically according to operational conditions, so there is a need of new line capacity estimation system. In this paper, we present systematic line capacity analysis model. The proposed model has three main components; TPS(tain performance simulator), PES(parameter evaluation simulator), LCS(line capacity simulator).

• 한국시뮬레이션학회논문지
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• 제8권2호
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• pp.87-100
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• 1999

A manufacturing environment without a computerized system causes numerous problems, since many important decisions are made based on the experience of veteran staffs. Especially, when a strategy for the improvement of manufacturing efficiency is considered, it is hard to predict the effect of the strategy. A solution to the problem without large investment of the computerized system is the simulation study. This paper shows the modeling and simulation based on DEVS(Discrete Event System Specification). Two types of models are implemented, one for representing the current production strategy and the other for the new strategy. The new strategy is expressed as priority rules within the model. The process in concern is the metal grating production process in which the size of the group, for applying a specific cutting and scheduling strategies, is one of the important factors in improving the production efficiency. Some reliable criteria for the evaluation related to the production effeciency are established from the simulation study.

• 산업경영시스템학회지
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• 제38권3호
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• pp.95-99
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• 2015

The IRR(internal rate of return) is often used by investors for the evaluation of engineering projects. Unfortunately, it has serial flaws: (1) multiple real-valued IRRs may arise; (2) complex-valued IRRs may arise; (3) the IRR is, in special cases, incompatible with the net present value (NPV) in accept/reject decisions. The efforts of management scientists and economists in providing a reliable project rate of return have generated over the decades an immense amount of contributions aiming to solve these shortcomings. Especially, multiple internal rate of returns (IRRs) have a fatal flaw when we decide to accep it or not. To solve it, some researchers came up with external rate of returns (ERRs) such as ARR (Average Rate of Return) or MIRR (MIRR, Modified Internal Rate of Return). ARR or MIRR. will also always yield the same decision for a engineering project consistent with the NPV criterion. The ERRs are to modify the procedure for computing the rate of return by making explicit and consistent assumptions about the interest rate at which intermediate receipts from projects may be invested. This reinvestment could be either in other projects or in the outside market. However, when we use traditional ERRs, a volume of capital investment is still unclear. Alternatively, the productive rate of return (PRR) can settle these problems. Generally, a rate of return is a profit on an investment over a period of time, expressed as a proportion of the original investment. The time period is typically the life of a project. The PRR is based on the full life of the engineering project. but has been annualised to project one year. And the PRR uses the effective investment instead of the original investment. This method requires that the cash flow of an engineering project must be separated into 'investment' and 'loss' to calculate the PRR value. In this paper, we proposed a tabulated form for easy calculation of the PRR by modifing the profit and loss statement, and the cash flow statement.

• 한국융합학회논문지
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• 제6권6호
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• pp.111-117
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• 2015

디지털콘텐츠 산업은 새로운 기기와 기술의 발전, 장르, 기술간 융합화 현상으로 성장이 예상되고 있다. 그러나, 초기 투자 비용이 많이 소요되고 불확실한 수익성 때문에 디지털콘텐츠 분야에 대한 금융지원제도는 활성화되지 못하고 있다. 본 논문은 기술가치평가를 이용하여 디지털콘텐츠 기업들의 금융 활성화 방안에 관한 연구이다. 이를 위하여 첫째, 디지털콘텐츠 기업들의 현황(자금조달 현황과 매출액 등)을 살펴본다. 둘째, 분석된 디지털콘텐츠 기업들의 현황을 바탕으로 금융활성화 방안을 논한다. 본 연구는 기술가치평가를 활용한 금융활성화 방안 도출에 도움을 줄수 있다.

• 한국콘텐츠학회논문지
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• 제15권10호
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• pp.18-25
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• 2015

한류열풍이후 연기예술 분야가 산업화하면서 콘텐츠 투자의 안정화를 위한 배우경영의 과학화에 대한 요구가 높아졌다. 이에 따라 본 연구는 학제간 연구를 통해 융합적인 관점에서 새로운 배우 평가모델을 마련하기 위해 시작되었다. 문헌고찰을 통해 배우평가 요소들을 엄선해 분류하고 델파이기법을 적용하여 전문가들이 컨센서스를 이룬 결과, 배우의 평가요소는 자질적 요소인 연기 및 소통 능력, 신체 조건과 이미지, 연기와 작품에 대한 적극성과 열정, 작품 및 제작환경에 대한 이해도, 배우철학과 자기관리의 안정성, 성과적 요소인 시청자와 관객 동원 능력, 스타덤, 팬덤, 작품 경력, 네트워크 등 10가지로 도출되었다.