• 상하수도학회지
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• 제27권3호
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• pp.395-404
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• 2013

The risk of pipe-bursting in multi-regional transmission mains consisting of 89 % of singled pipeline is so high that pipeline stabilization project is required such as renewal and replacement, pipe paralleling, emergency ties. Pipeline stabilization projects could be postponed at the step of initial decision-making because effect of this project is intangible benefit like activation of economic, improvement of welfare related to water. This study is to suggest quantified economical feasibility model for intangible benefit presumption to solve above problem. Cost reduction of emergency water supply, leakage, burst restore and energy efficiency improvement was altered and applied. As a result of economic analysis taking into account estimated benefit and cost under discount rate 5.5 %, service life 40 years, sufficient economic feasibility analyzed with B/C 2.45, NPV 317,700 million won, IRR 9.09 %.

• 한국태양에너지학회 논문집
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• 제33권5호
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• pp.41-50
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• 2013

Economic feasibility study using weighted average variable Jeju System Marginal Price, SMP, was conducted for Gasiri wind farm of Jeju Island. To predict the variable Jeju SMP, generator share ratio for SMP was calculated from the real time wind power production and the power demand data for years. Also, sensitivity analysis on Net Present Value, NPV, and Benefit/Cost Ratio, B/C ratio, were performed to clarify which factors are more important in assessing economic feasibility. The result shows that the Gasiri wind farm has a minimum of 110 billion won and a maximum of 132 billion won difference between fixed and variable SMP. Also, Capacity Factor, C.F., had the highest sensitivity for NPV, followed by SMP. Accordingly, when economic analysis for a potential wind farm site is carried out, the variable SMP as well as C.F. should be considered for more accurate assessment of the wind farm.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.153-155
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• 2011

In this study, an insulation panel system that has the most excellent economic feasibility in a long term LCC viewpoint in some analysis, which determine a proper insulation panel construction method for the out wall of structures, is analyzed. As a result, in the case of a deterministic LCC analysis, the initial investment cost represents about 80,000Won/㎡ for extrusion ceramic panels. Also, although the costs of maintenance, disassembling, and disposal show no large differences compared with other panel systems, metal panels indicate a bit higher than other panel systems about 1.5 times. In the probability density function that analyzes the variation of the probabilistic cost between panel systems and its economic feasibility, metal panels show the highest cost distribution and extrusion and stone panels represent low cost distributions. In the cumulative function distribution that composites probability density functions, the extrusion ceramic panel represents the most excellent economic feasibility and reliability and that is also the most superior subject among the subjects used in this study.

• 융합정보논문지
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• 제11권6호
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• pp.113-119
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• 2021

무기체계 획득사업은 막대한 예산을 투입하여 국가에 미치는 파급효과가 큰 특성이 있어 무기체계 획득사업을 추진하기 위한 기획연구 단계에서 경제적 타당성을 확보한 획득대안 분석이 요구되고 있다. 이러한 요구에 따라 획득연구 단계에서 획득대안에 대한 경제성 분석을 수행하고 있으나, 현재는 초기 단계로 경제적 분석에 따른 획득대안 분석에 대한 연구는 미비한 실정이다. 본 연구에서는 현재 획득대안에 대한 의사결정 방법인 효과분석의 제한점을 식별하고 추가로 비용편익분석 방법을 제시하여 획득대안에 대한 경제성 분석 방법을 제안한다. 비용편익 분석의 결과를 비용/편익비율(Benefit/Cost Ratio)로 제시하여 복수 대안뿐만 아니라 단일 대안에 대한 경제성 분석이 가능하고, 경제적 타당성을 확보한 보편적인 결과 제시가 가능하다. 제시 방법을 OO 유도로켓 사업 획득연구에 적용하여 각 대안에 대한 경제성 분석결과를 제시한다.

• 한국유기농업학회지
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• 제23권3호
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• pp.455-467
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• 2015

This study analyzed the regional economic feasibility of greenhouse gases (GHGs) reduction technology in paddy rice. Firstly, the impact of GHGs reduction technology on productivity, emission reduction, and costs is different from region to region. Secondly, the water irrigation system contributes to productivity, GHGs reduction, and water reduction, but the profit of paddy rice will decrease because of increase in fixed costs and variable costs. Thirdly, the economic feasibility shows that water-savings plot has a 1.41 in a benefit-cost ratio.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
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• pp.324-327
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• 2008

본 연구는 항공안전기술개발사업의 일부로 진행되고 있는 소형항공기의 개발 및 BASA 인증사업의 경제적 타당성을 사전적 예비적으로 평가하고, 개발 대상 기종의 선정에 참고하게 하는 목적으로 진행되었다. 이러한 목적을 달성하고자 본 연구는 소형항공기 개발 및 BASA 인증사업의 진행에 소요되는 비용과 동 사업을 통하여 기대되는 직접적 경제적 효과인 민간 항공기수출을 통하여 얻는 국민 경제적 편익을 추정하였다. 비용과 편익은 후보기종별로 현금흐름액으로 추정되었으며, 이를 기초로 후보기종별로 소형항공기 개발 및 BASA 인증사업의 경제적 타당성을 검토하기 위한 편익/비용 비율 (B/C ratio), 순현재 가치(NPV), 내부수익률(IRR)을 산출하였다. 분석결과 후보기종인 VLJ급 항공기와 Piston 항공기에 의한 사업진행 모두 경제적 타당성이 있으며, 사업대상 후보기종 VLJ급 항공기와 Piston 항공기중 VLJ급 항공기에 의한 사업진행이 더 유리한 결과가 나타나는 것으로 분석되었다.

• International Journal of Internet, Broadcasting and Communication
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• 제7권2호
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• pp.36-40
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• 2015

In Korea, new total energy-saving solution has planned to build test-bed in underground subway station. Breaking energy is one of the most energy saving method in railway, but it has not be fully used up for economical purpose. This paper demonstrates on energy saving technology application including breaking energy and heating energy to underground subway station. It also offer solution of optimization of power energy flow. Moreover, economic feasibility analysis performed for undergound test bed constuction.

• KIEAE Journal
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• 제15권6호
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• pp.5-10
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• 2015

Purpose: To evaluate the economic performance of grid-connected photovoltaic system in residential house, household electricity bill policy of Korea Electric Power Corporation (KEPCO) must be applied precisely, and market tendency and uncertainty of system also need to be considered. In this study, to evaluate the economic feasibility of PV system, we measured PV power generation and electricity consumption of six of Green home in Daejeon through web based remote monitoring system. Method: We applied Monte-Carlo simulation based on life cycle cost analysis, to reflect an uncertainty of main factor in economic feasibility evaluation of photovoltaic system. Result: First, with deterministic analysis, the difference of NPV of cumulative financial savings among households varied from -3,310 ~ 24,170 thousand won, portraying notably big range. Also the possibility of getting the same result was 50% when applying uncertainty. Second, the higher electricity consumption is, the more economic feasibility of photovoltaic system increases because KEPCO uses progressive taxation in household electricity bill policy. Third, The contribution to variance of electricity price increases in NPV varied from 98.5% to 99.9%. While the inflation rate and annual degradation contributed very little to none.

• 수산해양기술연구
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• 제56권3호
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• pp.258-264
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• 2020

This study aimed to analyze the economic feasibility of the reduction of working safety accidents in stow net fishery through the prevention education to fishing crews. The benefit was evaluated by estimating insurance payment amount that was reduced through prevention education. The decreasing rate of working safety accidents was presumed to follow the experience in Japan. The cost was assumed as the cost of textbook development. Results indicated that IRR was estimated to be 79.9% in case of scenario assuming no additional operating costs while IRR was 56.3% in case of scenario assuming 10% additional operating costs. In addition, the economic feasibility would be secured when annual operating costs increased to 274 million won according to the result of sensitivity analysis.

• 수산경영론집
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• 제44권2호
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• pp.69-81
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• 2013

The purpose of this study is to examine the economic validity of Ecklonia cava aquaculture business for raising fishing people's revenue. The results of this study are summarized as follows: First, the production of Ecklonia cava is estimated about 251 ton or more in Jeju. Second, the distribution structure of Ecklonia cava is not established, but Ecklonia cava is traded much more through bio or processing corporation than through fisheries cooperative like other marine plants. Third, the price of Ecklonia cava should be at least 1,729 won per kilogram under 4.04% of capital cost for economic feasibility of Ecklonia cava aquaculture business. Finally, the results of sensitivity analysis show that there is economic feasibility of Ecklonia cava aquaculture business when the price of Ecklonia cava is more 2,500 won per kilogram and the capital cost is under 8.0%.