• 수산해양교육연구
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• 제27권3호
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• pp.821-832
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• 2015

The aims of this study are to estimate the optimal vessel reduction scales and these direct economic effects of coastal and offshore fisheries in the Republic of Korea. To estimate respectively optimal fishing efforts of individual fishery by species in coastal and offshore fisheries, we adopted appropriate fishing power of each species published by National Fisheries Research and Development Institute and also considered biological and socio-economic factors such as the bycatch rate, the profit rate, the efficiency of resource use, the average age of fishing vessel, the intention of vessel reduction, and the annual changes in vessels by other factors. The direct economic effects of the optimal vessel reduction in coastal and offshore fisheries based on maximum sustainable yield and 2/3 maximum sustainable yield was calculated by a cost-benefit analysis. This study showed that optimal reduction numbers of vessels engaged in coastal and offshore fisheries were 4,431 and 374 vessels and the direct economic effects in coastal and offshore fisheries were about 371.7 and 569.4 billion won and these NPV and BCR were 111.7 billion won and 1.65 and 342.6 billion won and 4.97 respectively.

• Nuclear Engineering and Technology
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• 제54권3호
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• pp.1136-1144
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• 2022

The effects of nearby residents and the public by the residual contamination from the decommissioning of nuclear facilities should comply with the dose criteria, and whether additional remediation action is necessary from the ALARA perspective must be determined. Therefore, we analyzed the requirements of ALARA action levels and performed preliminary ALARA evaluation. The ratio of residual contamination concentration to DCGL was calculated for the basement fill and the building occupancy mode. The results showed that the additional remediation actions below DCGL are not justified. In addition, we analyzed the effect of remediation area. It was noted that the increase of the remediation area showed a positive correlation with the Conc/DCGL value in the basement fill mode. On the other hand, in the building occupancy mode, since the floor area of the building is the target of remediation and has the effect of increasing the same as the evaluation area of the building occupants, but due to the difference in the amount of increase, the Conc/DCGL showed a negative correlation. We expect the approach and method of ALARA evaluation can be utilized for concrete cost-benefit calculation during the decommissioning or at the time of remediation.

• 대한전기학회논문지:전력기술부문A
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• 제52권9호
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• pp.535-541
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• 2003

Demand Side Management (DSM) activities have been designed to encourage customers to modify their patterns of electricity consumption including the timing and level of electricity demand. The role of DSM has been more and more important in the point of social energy utilization on the limited resources. The objectives of DSM are generally related to load reductions and generation cost savings. This paper presents an approach to B/C analysis to evaluate the impact of DSM programs especially on the strategic conservation and the load management programs. The proposed approach embedding the existing B/C analyses is applicable to the new electricity market. Case studies show the B/C ratio and the avoided cost due to the impact of DSM programs.

• 대기
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• 제20권2호
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• pp.187-194
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• 2010

We estimate the economic benefit of weather modification (precipitation enhancement and fog dissipation) by assuming its operation for the considered regions. Based on the statistical data, the economic benefit of the virtually operational precipitation enhancement experiments for the Andong and Imha basins, where the natural precipitation is relatively lack in South Korea, is calculated 348 for the water resources, 22,458 for forest fire prevention, and 28,458 million won/year for the drought relief. The benefit of the fog dissipation operation for the Incheon International Airport is estimated 7,365 million won/year for the flight delay due to fog. The calculated ratio of benefit to cost for precipitation enhancement operation for the basins is 14.07, which is comparable to that conducted in other countries.

• 지적과 국토정보
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• 제49권2호
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• pp.23-38
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• 2019

국토센서스 사업은 지목불일치 문제를 해결하고 실제 토지이용을 반영할 수 있도록 전국의 토지를 정기적으로 직접 조사하는 작업이다. 그에 따라 본 연구는 국토센서스 사업뿐만 아니라 관련된 토지·주택조사가 투입된 예산 대비 실제로 사회적 후생의 증대를 가져오는지 검토하고, 사업의 타당성을 점검하고자 하였다. 국토센서스 사업의 경제적 가치는 조건부 가치 추정법의 단일경계모형과 이중양분선택법을 동시에 활용하여 지적체계 개선 사업의 타당성을 추정하고자 하였다. 단일경계모형과 이중양분선택법에 의한 편익 가운데, 보수적인 결과가 나온 단일경계모형으로도 본 사업의 비용편익비율은 1을 상회한다. 향후 이 사업의 추진 과정에서 예상보다 비용이 증가하거나, 지금 본 연구에서 상정한 것과 달리 현실에서는 편익이 적게 나올 수도 있다. 미래의 사업추진에는 현재 우리가 모두 알기 힘든 불확실성이 있기 때문이다. 그러한 불확실성에 대해서는 앞으로 현명하게 대처하고, 비효율성을 통제하기 위한 진지한 노력이 필요하다.

• 대한토목학회논문집
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• 제36권4호
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• pp.685-694
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• 2016

야간 혹은 우천시에 노면표시의 시인성이 저하되어 교통안전에 위협을 초래하고 있는 가운데, 본 연구에서는 최근 소개된 차선도색 장비 성능개량에 따른 노면표시 수명 연장(1.5배), 축광차선도료를 배합한 야광 노면표시의 시인성 개선(32.7%), 인간공학적 검토를 통한 고속도로 차선도색 설치규격 개선안(도색길이 6m, 빈길이 12m, 차선폭 13cm: 도색면적 27.8% 절감)을 도입하였을 때 종합적인 소요비용 및 사고절감 편익을 고려한 경제성분석을 통해 도입타당성을 제시하고자 하였다. 기존 문헌을 바탕으로 노면표시 시인성 32.7% 개선에 따라 26.9%의 사고감소 효과가 있는 것으로 나타났으며, 이에 대한 고속도로 교통사고 절감편익은 125억원으로 산정되었다. 야광차선 도입 및 설치규격 개선에 따른 총비용 증가분은 306억원으로 고속도로 일괄 도입시 경제성(비용-편익비 0.41) 확보가 어려운 것으로 나타났다. 야간 교통사고가 잦은 상위 20개 구간을 대상으로 각 구간별 경제성 분석을 수행한 결과, 구간에 따라 비용-편익비가 0.67~4.20으로 전체 20개 구간 중 11개 구간에서 경제성이 확보되어, 특히 지방부 고속도로 사고다발구간에 야광 노면표시 및 설치 규격 개선을 우선적으로 적용시 사고 감소에 따른 경제성이 존재하는 것으로 확인되었다. 연구의 한계와 향후 연구주제가 함께 논문의 말미에 토의되었다.

• 디지털융복합연구
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• 제17권6호
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• pp.169-175
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• 2019

본 연구의 목적은 합류식 하수처리구역 내에 대형 건축물을 건설하는 경우, 정화조를 설치하는 대안과 정화조를 대신하여 전용오수관로를 설치하는 대안의 경제성을 비교분석하는 것이다. 이를 위해 우리나라 대표적 대형 건축물인 롯데월드타워의 사례를 들어 두 대안 간의 비용편익분석을 수행하였다. 롯데월드타워 건물에 정화조를 설치하는 대신에 전용오수관로를 설치할 경우, 회수기간은 6.2년, 순현재가치(NPV)는 약 61.7억 원이 발생하며, B/C비율은 1.93인 것으로 나타났다. 이러한 사례분석 결과는 향후 정화조 폐쇄에 대한 정책수립과 대형 건축물 신축 시 전용오수관로 건설에 대한 타당성을 검토할 때 적용할 수 있는 유용한 지침을 제공해 줄 것으로 보인다. 향후에는 원인자부담금과 전용오수관로 관리책임 부담여부, 악취감소에 따른 경제적 효익 등을 비용편익분석에 추가적으로 고려할 필요가 있다.

• 대한임상독성학회지
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• 제19권1호
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• pp.1-7
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• 2021

Purpose: The purpose of this study was to conduct a systematic review to investigate the socio-economic benefits of the poison control center (PCC) and to assess whether telephone counseling at the poison control center affects the frequency of emergency room visits, hospitalization, and length of stay of patients with acute poisoning. Methods: The authors conducted a medical literature search of the PubMed, EMBASE, and Cochrane Library databases. Two reviewers evaluated the abstracts for eligibility, extracted the data, and assessed the study quality using a standardized tool. Key results such as the cost-benefit ratio, hospital stay days, unnecessary emergency room visits or hospitalizations, and reduced hospital charges were extracted from the studies. When meta-analysis was possible, it was performed using RevMan software (RevMan version 5.4). Results: Among 299 non-duplicated studies, 19 were relevant to the study questions. The cost-benefit ratios of PCC showed a wide range from 0.76 to 36 (average 6.8) according to the level of the medical expense of each country and whether the study included intentional poisoning. PCC reduced unnecessary visits to healthcare facilities. PCC consultation shortened the length of hospital stay by 1.82 (95% CI, 1.07-2.57) days. Conclusion: The systematic review and meta-analysis support the hypothesis that the PCC operation is cost-beneficial. However, when implementing the PCC concept in Korea in the future, it is necessary to prepare an institutional framework to ensure a costeffective model.

• Environmental Engineering Research
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• 제24권1호
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• pp.63-73
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• 2019

This study suggests a method for calculating the benefits of water pipe renewal based on an estimate of the water supply suspension risk. The proposed method based on five benefit items is more direct and specific than other benefit estimation methods. In addition, a methodology evaluating the economics of pipe renewal based on pipe failure rate is proposed for estimating the optimal renewal point from an economic perspective. By estimating the optimal renewal period based on a yearly benefit cost ratio per pipe in a case study area, it was possible to draft an optimal renewal plan for the subject region from an economic perspective. Compared with other methodologies, a reasonable optimal renewal period was derived from an economic point of view. The result of this study may be used to develop future water pipe renewal plans. Moreover, the proposed methodologies and results derived from this study can be applied to asset management plans.

• Computational Structural Engineering : An International Journal
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• 제1권1호
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• pp.59-69
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• 2001

This study is intended to propose a systematic approach for reliability-based assessment of life cycle cost (LCC) effectiveness and economic efficiency for cost-effective seismic upgrading of existing bridges. The LCC function is expressed as the sum of the upgrading cost and all the discounted life cycle damage costs, which is formulated as a function of the Park-Ang damage index and structural damage probability. The damage costs are expressed in terms of direct damage costs such as repair/replacement costs, human losses and property damage costs, and indirect damage costs such as road user costs and indirect regional economic losses. For dealing with a variety of uncertainties associated with earthquake loads and capacities, a simulation-based reliability approach is used. The SMART-DRAIN-2DX, which is a modified version of the well-known DRAIN-2DX, is extended by incor-porating LCC analysis based on the LCC function developed in the study. Economic efficiencies for optimal seismic upgradings of the continuous PC segmental bridges are assessed using the proposed LCC functions and benefit-cost ratio.