• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.1655-1659
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• 2007

하천을 횡단하는 교량은 하천의 배수위를 증가시키는 중요한 요인으로 작용한다. 더욱이 산지 하천에 시공된 교량은 유송잡물에 의한 폐색으로 인하여 교량 직상류부에 홍수피해를 가중하는 역할을 하기도 한다. 본 연구에서는 교량 재가설에 따른 경제적 타당성을 검토하고자 교각에 집적되는 유송잡물에 의한 배수위만이 홍수범람을 일으키는 원인으로 가정하여 제방고 이상의 홍수용량이 범람한 상황을 고려하였다. 이러한 홍수량이 유역내에서 어느 정도의 피해를 입히는지에 대하여 다차원 홍수피해 산정방법에 의거 교각의 개수를 줄임으로써 저감할 수 있는 침수피해액을 산정하였다. 그리고 교량의 재가설을 위한 개략공사비를 비용으로 보고, 재가설에 따라 저감할 수 있는 침수피해액을 편익으로 산정하여 비용-편익 분석을 실시한 결과 합리적으로 교량의 경간장을 확보하는 방안을 마련할 수 있었다.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.335-336
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• 2006

최근 보급률이 급격하게 증가하고 있는 소형열병합발전(CHP)의 도입에 대한 전력회사(Utility)의 영향을 분석하기 위해서는 편익과 손실을 함께 고려해야 하는데 CHP의 도입에 대한 편익을 분석하기 위하여 사용되는 회피비용은 크게 에너지회피비용, 설비건설 회피비용, 손실회피비용 그리고 환경회피비용으로 구분된다. 그리고 기존의 전력회사 Utility의 측면에서 CHP 도입으로 인한 전력판매 수입의 감소나 시장점유율 축소도 함께 분석을 해야 한다. 이에 본 논문에서는 CHP보급으로 인한 편익 중 에너지회피비용(Energy Avoided Cost)을 산정하기 위한 효율적인 방안을 제시하고자 한다.

• Journal of Korean Library and Information Science Society
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• v.32 no.4
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• pp.419-447
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• 2001

This study is to analyze a cost-benefit and a cost-effectiveness on the basis of number full-text downloaded from IDEAL in the electronic journals consortium of Y University Library during 2000. The result of this study shows that Y University Library used more the combined print and electronic journals than only electronic journals, and in the case of the analysis on the cost-benefit, there was no benefit, but the cost-effectiveness was very high. Based upon the result of this study, it suggests that academic libraries request a trial from the information agency and carry out user instruction analysis of varied use statistics, user satisfaction survey so as to promote use of electronic journals.

• KDI Journal of Economic Policy
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• v.36 no.1
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• pp.43-80
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• 2014

This study suggests a model for calculating total benefit rigorously to use the contingent valuation method (CVM) in cost-benefit analysis (CBA). Estimating households' willingness to pay through survey method, the study attempts to demonstrate if a respondent's income and the distance between a respondent's residence and the location of a target facility affect her willingness to pay. The estimation results from a structural model show that income and distance-decay effects exist and that the calculated total benefit varies largely when these effects are ignored. The study emphasizes the effects of income and distance-decay on the total benefit must be carefully considered in using CVM for CBA. Even though the total project cost is precisely estimated, the benefit/cost (B/C) ratio may differ largely when the total benefit is not correctly calculated. Also, an ad hoc model generates significantly different estimates from the utility difference model this study adopted. The difference in estimates suggests that the total benefit has to be estimated by a structural model. Finally, simulations are performed to check the validity of the model as well as to predict consequences when income and distance-decay effects are not properly treated. The results from simulations reveal it is not desirable to ignore those effects considering the perspectives of balanced regional development.

• Journal of the Korean Society for information Management
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• v.20 no.4 s.50
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• pp.159-193
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• 2003

This study is a case study that attempt to quantify the economic efficiency of 'digital library program(DLP) of the National Library of Korea' by means of cost-benifit analysis. Results indicate that the B/C ratio is 1.70 which can be interpreted the economic efficiency of DLP is very high. Of particular significance is the fact that this study empirically proves that the digital library program is economically efficient.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.409-418
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• 2020

The purpose of this study is to analyze the economic feasibility of public postpartum care centers established for health care of low-income postpartum mothers. 6 of 8 public postpartum care centers were used to verify the economic feasibility and research data were collected through the centers. A sensitivity analysis was performed with the bed turnover rate, assuming that users in a postpartum care center will be decreased. As a result, B/C ratio was estimated to be 1.50 and the net benefit was estimated to be KRW 186,557 in million. A sensitivity analysis showed that B/C was 1.42 at 17.4 of bed turnover rate and 1.26 at 15.4 which indicates the lowest bed turnover rate among subjects. A public postpartum care center was evaluated as economically feasible as public works. Therefore it is necessary that the public postpartum care centers operated by local governments should be expanded through legal amendment.

• Journal of Convergence for Information Technology
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• v.11 no.6
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• pp.113-119
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• 2021

Since the weapon system project has a large ripple effect on the country by investing a huge budget, analysis of acquisition methods that secured economic feasibility is required in the planning stage to promote the weapon acquisition project. In response to this demand, economic analysis for acquisition method is preformed in the research stage of previous studies, but the analysis on economic analysis for acquisition alternative is imperfect at the present. In this research, we identify the limitations of the effect analysis and propose an additional cost-benefit analysis method to analyze the economic feasibility of the acquisition alternative. It is possible to present the universal results of economic feasibility analysis for not only multiple alternatives but also single alternatives by presenting benefit/cost ratio. It is applied to research on acquisition project of OO guided rocket, and the result of economic analysis for each alternative is presented.

• The Journal of the Korea Contents Association
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• v.8 no.4
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• pp.247-254
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• 2008

This research was conducted to investigate the feasibility of aviation safety technology development. The important subjects of aviation safety technology development, aviation accident prevention and damage reduction technique, aircraft safety certification development, BASA promotion in an aircraft class, were included to investigate the the feasibility of aviation safety technology development. The survey technique using Benefit-Cost Anlysis was performed and the results showed that aviation safety technology development brought scientific technique effect, industrial and economic effect, and the rest effects. Also, the benefits from aviation safety technology development were much greater than the costs.

• Journal of Environmental Policy
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• v.10 no.2
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• pp.61-92
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• 2011

We analyzed the efficiency of environment investments by taking examples of central government's environmental investment (CGEI hereafter) and investment in prevention of environmental pollution (IPEP hereafter). We expanded the scope of existing studies by decomposing the internal rate of return (IRR hereafter) and present value of benefit (Bpv hereafter) into variable cost (VC hereafter) reduction, investment cost reduction (STC-VC hereafter), and rent. And we found that Bpv checks only the magnitude of benefit, while IRR indicates the existence of efficiency by investigating short-run total cost (STC hereafter) reduction and rent. Finally, by analyzing investment efficiency and changing benefit with respect to CGEI and IPEP through the investment efficiency methodology that compares IRR with market interest rate, we executed retrospective benefit-cost analysis. Accordingly, CGEI and IPEP are not efficient. However, IPEP is even more inefficient than CGEI.

• Economic and Environmental Geology
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• v.47 no.3
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• pp.219-225
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• 2014

In Korea, there are 1,474 thousand pumping wells nationwide which account for about 12% of total water use in 2012. As much as 39 hundred million tons of groundwater were used while 333 hundred million tons of total water were supplied in 2012. Because the water management authority projects that water demand will exceed supply by 2021, the authority is planning to extensively expand groundwater use in accordance with economic feasibility. Using the basic frameworks of cost-benefit analyses of the World Bank and the US Environmental Protection Agency (US EPA), the objective of this study is to examine the costs and benefits of the expansion of Korea's groundwater extraction through pumping wells. We conclude that the BC ratio of the groundwater pumping wells is 2.98. This signifies that the benefits are 2.98 times higher than the costs. The benefits include use and non-use values of pumping wells while the costs include the installation and maintenance of new wells, in addition to the restoration and pollution costs of abandoned wells, as well as fees for water quality tests, etc.