• Journal of the Korean Society for Railway
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• v.13 no.3
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• pp.333-338
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• 2010

Investment in railroad, it is very important to find a way to increase a benefit to make the economic efficiency more positive, but is also considering that the cost will be higher. In this paper, we suggest a optimized model for increasing the benefit of railroad business considering of stopping patterns. According to existing analytical method, the operation hour is calculated based on that scenario regarding that it stops at all major stations but it does not fit the actual operation conditions. Considering various stopping patterns can be reasonably calculated the cost for required rail cars in the planning stages, and can also affect economic efficiency in a positive way.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.1D
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• pp.61-70
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• 2010

In case of low benefit project with low traffic or high-priced project, existing analysis of cost and benefit tends to present a low feasibility. However, considering the improvement of environment, intensification of disaster prevention, public stability of countryside area and formation of good scenery, these projects can have a feasibility. This paper analyzes and summarizes the indirect benefit of some ripple effects, caused by road projects, and presents the methodology and process in order to change the indirect benefit into monetary value.

• Journal of Korean Society of Forest Science
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• v.96 no.3
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• pp.283-289
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• 2007

Benefit-cost analysis is a useful tool for organizing information on the relative value of alternative public investments like national park preservation projects. When the value of all significant benefits and costs can be expressed in monetary terms, the net value (benefits minus costs) of the alternatives under consideration can be computed and used to identify the alternative that yields the greatest increase in public welfare. However, since goods and services of national parks are not commonly bought or sold in the marketplace, it can be difficult to express the outputs of a national park preservation project in monetary terms. In this case the dichotomous choice contingent valuation is employed to elicit the public benefit value. In this paper, a distribution-free approach, Turnbull empirical distribution model, is employed to analysis the benefit value of Woraksan National Park. The result is shown that annual use and preservation values of Woraksan National Park are estimated 6.5 and l37.4 billion won. Also, flow and stock values are estimated 143.9 and 3,021.7 billion won, respectively.

• Journal of Korea Water Resources Association
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• v.47 no.7
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• pp.629-641
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• 2014

This study explores methods of allocating costs incurring from construction of environmental infrastructure among local governments involved in the project. Principles for equitable cost-allocation are reviewed, and pros/cons associated with different methods are examined. Proportional Allocation method, Shapley Value method, SCRB (Separable Cost-Remaining Benefits) method are applied to a case of swage treatment plant in Gyeongnam province region, Korea. It is found that the SCRB method produces the most equitable result, followed by Shapley method. The Proportional Allocation method, although easy to understand and simple to calculate, is found to be skewed in favor of small town.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.822-822
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• 2012

본 연구는 상류의 개발행위와 더불어 현재 수질관리의 기준이 되는 오염총량관리제를 대상으로 '규모의 경제'의 논리를 따른다는 가정 하에, 지자체간에 협조를 통해 비용을 절감하여 서로 혜택을 볼 수 있도록 상 하류 지자체와 중앙정부 등 관련 당사자들 간의 비용배분 방안을 도출하는 것을 목적으로 하였다. 이를 위해서 광주광역시에 위치한 평동산업단지와 영본B, 영본C를 대상으로 광주, 전남, 중앙정부를 이해당사자로 하여 협조적 상황 하에서 대상 비용배분 문제를 정의하였고, 협조적 게임이론에 근거한 SCRB법 및 샤플리법을 적용하여 비용배분 결과를 제시하였다. 우선 광주와 전남이 각각 삭감해야 할 오염량을 산정하고, 해당 삭감량 만큼 처리하기 위한 하수처리시설의 규모를 설정하였다. 또한 하수처리시설의 건설비와 하수관거 공사비, 유지관리비를 산정하였으며, 하수처리시설의 내용연수인 20년간의 총비용을 2010년 현재가치 기준으로 산정하였다. 상 하류 지자체가 공동으로 대처할 경우 20년간 총비용은 416,311.8 백만원, 개별로 대처할 경우 464,439.6 백만원이며, 공동 대처가 42,359.3 백만원이 절감되므로 양 지자체 모두 협조적 게임에 응할 기본배경은 성립되었다. SCRB법에 의한 지자체별 비용배분율을 산정 결과, 광주 74.24%, 전남 25.76%로 산정되었으며, 2001～2010년 하수도 세입현황을 기준으로 중앙정부의 지원 비율은 10년간 최소 23.98%, 평균 29.22%, 최대 34.17%로, 각각의 비율별로 중앙정부, 광주, 전남의 비용분담액을 도출하였다. 본 논문에서는 개략적으로 비용을 산정하였으나 오염총량관리 사업은 막대한 예산을 필요로 하기 때문에 실제로 두 지자체가 협조하여 비용배분을 하게 된다면 하수처리시설의 수질개선효과, 하수처리시설 위치선정, 사업비용 등을 세밀하게 분석해야 할 것이다. 본 논문은 오염총량관리제에서 제시하는 목표수질을 대상으로 하였으나, 지자체의 정책에 따라 친수활동 증대와 생태 자연환경 개선 등과 같은 수질개선에 따른 간접적인 효과를 고려하여 오염 총량관리제의 목표수질보다 더 나은 수질을 원할 수도 있을 것이다. 협조적 게임의 상황을 복잡하게 하여 해결 가능성이 낮아질 수 있으나, 수질개선에 의한 다양한 효과를 편익으로 산정할 수 있다면 이를 협조적 게임에 적용하여 전반적인 수질개선에 대한 지자체의 적극적 활동을 유도할 수도 있을 것이다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.19 no.3
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• pp.195-202
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• 2017

This study aims to suggest the basics for the implementation of the farmstead-specific early warning system (FEWS) for weather risk management nationwide. A survey by questionnaire was conducted to examine farmer's response, and a cost-benefit analysis was made to examine the effect of the FEWS on the economy. The farmers who volunteered to participate in this survey responded that they were generally satisfied with the FEWS, and that they used it well for farming. Willingness to pay (WTP) for the early warning service was estimated to be 8,833 KRW per month by survey respondents. If the early warning service is extended to nationwide and 50% of farmers use it for six months, then the ratio of benefit to cost will be 2.2, indicating that nationwide expansion of the FEWS is very feasible.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.3B
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• pp.240-247
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• 2011

In this paper, we made cost & benefit analyses of both WLAN-based and WiBro-based wireless networks for U-City(Ubiquitous City). We obtained basic data for cost analysis such as the number of network equipments through cell design and cell-coverage analysis. Also we made benefit analysis considering technical features of WLAN and WiBro networks. By cost & benefit analysis, we have reached conclusions that WiBro-based wireless network has earlier BEP(Break-Even Point) and larger NPV(Net Present Value) than WLAN-based network, and that WiBro is more efficient wireless network for U-City.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.36 no.4
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• pp.685-694
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• 2016

Visibility of lane marking is impaired at night, or in case of rain, and thereby threatens traffic safety. Recently, various studies and technology have been developed to improve lane marking visibility, such as the extension of lane marking life expectancy (up to 1.5 times), improvement of lane marking equipment, improvement of lane marking visibility (32.7%) by applying phosphorescent material mixed paint, and expressway lane design standards alternative (length 6m, gap 12m, width 13cm: 27.8% of painted surface are reduced) adoption with ergonomic analysis. In this study, a set of cost-benefit analyses was performed for the cases where such techniques were applied. Based on the literature review, 26.9% of traffic accidents would be prevented by improving lane marking visibility by 32.7%; accident reduction benefit was calculated as much as 12.5 billion KRW. Meanwhile, total increased cost when introducing phosphorescent material mixed paint and lane design standards alternative is calculated as 30.6 billion KRW. However, economic feasibility could not be secured with 0.41 of cost-benefit ratio when applied to the expressway network as a whole. Additionally, cost-benefit (B/C) analysis was applied to each of the top 20 night accident hot spots and the results of B/C ratios were between 0.67 and 4.20, showing that 11 out of 20 spot sections of expressway can have economic feasibility. This results indicate, with this kind of pavement marking applied to accident hot spots in rural expressway, better visibility and economic feasibility can be guaranteed through traffic accident reduction. Some limitations and future research agenda have also been discussed.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.4
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• pp.129-142
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• 2016

This study performs an evaluation, using the economic feasibility analysis method, of the LTE based railway wireless networks (LTE-R) service that is planned to be used for the future railway networks in Korea. Its objectives are using the evaluation results and working to reflect the factors that lead to a maximization of benefits in designing an integrated railway wireless network. This study analyzes the impact of implementing an LTE-R on the railway networks, in contrast to the existing wireless network methods, e.g. VHR and TRS to new rail lines on an economic view. This results found that the benefit cost ratio is greater than 1.0 with a 10% contribution to benefits of the wireless network service in the case study on the Wonju-Gangneung rail line that will start operations in 2018; as a result, an ICT design is desired. For the introduction of an LTE-R service for the Wonju-Gangneung rail line, design specifications need to increase to benefits for each service, which will verify actual contributions and therefore result in an overall economic effect.

• Journal of Energy Engineering
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• v.24 no.1
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• pp.32-41
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• 2015

The Metropolitan Area Green Heat Project (MAGHP), which collects unused heat gathered from power plants, steel works, landfills in western Metropolitan area and distribute it to integrated energy business (IEB) companies, is proposed for the purpose of enhancing energy efficiency and providing low-price heat for IEB companies. Therefore, in order to decide on whether to initiate the MAGHP, the economic feasibility analysis of the project is widely demanded. This paper attempts to consider and measure four economic benefits: heat supply benefit, production cost reduction benefit, greenhouse gas mitigation benefit, and air quality improvement benefit. In addition, the paper tries to conduct the economic feasibility analysis. The project requires three-year investment and thirty-year operation. Three important findings emerge from the analysis. First, its net present value is computed to be 1,269 billion won and more than zero. Second, its benefit/cost ratio is calculated to be 1.72 and bigger than 1.0. Third, its internal rate of return is estimated to be 24.26% and larger than the social rate of return, 5.5%. In conclusion, the MAGHP is socially profitable and should be conducted immediately.