• Environmental and Resource Economics Review
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• v.29 no.2
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• pp.247-270
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• 2020

The value of a statistical life (VSL) plays a very important role in estimating the benefits of environmental policy. It is used, for example, as a unit of monetization of health benefits resulting from the reduction of air pollutants, which is the basis of cost-benefit analysis of policies. The VSL can be defined as the value that people of each society are willing to pay to reduce the risk of death, so the value should reflect the characteristics of its members. In this study, we apply a choice experiment with 3,081 respondents collected through a web survey were divided into two samples according to the type of questions. Among the various estimates, the most appropriate estimate of the VSL is about 1.3 billion won from 1,528 sample, which is similar to the results of the meta-analysis using estimates from prior studies conducted in Korea. In addition, this study shows that a private prevention program is preferred to reduce the risk of death from cancer rather than a public program.

• Environmental and Resource Economics Review
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• v.22 no.2
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• pp.281-307
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• 2013

There has been some debates about zero willingness to pay in contingent valuation method research. Therefore, this paper tries to estimate and compare the results of various models to handle zero willingness to pay responses. For this purpose, we have employed parametric estimation such as the mixed model and the spike model, as well as non-parametric estimations. As a result, these models derived WTP estimate different from conventional model, but they also show some weakness. Therefore, in future research, more conservative estimate of the model should be to use rather than specific model.

• Proceedings of the Korea Contents Association Conference
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• 2019.05a
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• pp.77-78
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• 2019

과거에서 지금까지 연예인의 로맨스 루머는 엔터테인먼트 기업의 측면에서 부정적인 요소였으며 이러한 모습은 기사로도 쉽게 접할 수 있다. 이 연구는 익명성 로맨스 루머가 엔터테인먼트 기업의 가치에 미치는 경제적 영향을 사건 연구 방법을 이용해 살펴보았다. 2013년부터 2017년까지 상장된 기업을 중심으로 총 112건의 로맨스 루머를 수집하였고 80건의 비 익명성 루머. 32건의 익명성 루머로 이루어져있다. 해당 엔터테인먼트의 주식 자료가 분석에 이용되었다. 연예인의 로맨스 정보가 유출된 시점 전후의 비정상 수익률 추정을 통해 연예인에 대한 로맨스 루머 언급에 기업의 가치 변화에 미치는 유의성을 실증적으로 검증하였고, 로맨스 루머에 있어서 익명성에 대한 영향이 비익명성의 영향과 차이가 있는지 비교분석을 하였다. 연구 결과 연예인의 로맨스 루머의 언급 및 유출은 해당 엔터테인먼트 기업의 주가 변동에 통계적으로 유의하지 않은 것으로 나타났으며, 추가적으로 연예인의 특성이 엔터테인먼트 기업의 주가에 어떠한 상이한 영향을 미치는지 또한 살펴보았다. 로맨스 루머의 특성은 '성별', '직업'으로 구분하였고, 이에 대한 분석 결과, 특징에 따라 기업의 가치에 큰 영향이 없는 것으로 관찰되었다. 결론적으로 본 연구는 사건연구 방법을 통해 연예인의 익명성 로맨스 루머가 엔터테인먼트 기업의 가치에 미치는 영향을 실제 시장 데이터를 활용하여 실증적으로 분석하였다는 것에 의미가 있다.

• Journal of Navigation and Port Research
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• v.40 no.6
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• pp.401-412
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• 2016

The sustainable operation and development of ports is a key industry for Korea's national economy. It is increasingly more important to resolve conflicts with local communities due to port environmental problems such as air pollution, water pollution, noise and ecosystem destruction while securing port competitiveness through infrastructure expansion. In case of the Busan New Port development project in Korea, construction has been temporally suspended due to conflict with local fishermen over marine sand mining for construction. A primary reason for this is the absence and limitation of qualitative port environmental impact assessment methodologies in Korea. This includes the current investigation of fisheries damaged by ports. Therefore, the main purpose of this study is to propose economic valuation methods for assessing environmental impacts that are essential for efficient port environmental management and for sustainable port operation and development in Korea. To do this, this study examines the overall port environmental problems and their effects (damages) through the analysis of environmental policies and case studies of domestic and overseas ports. Then economic valuation methods are suggested for total economic values (TEV) of damaged environmental goods and services. Among the proposed methods, Habitat Equivalency Analysis (HEA), as a more scientific data based method, was applied to estimate marine ecosystem service damages from the designation of Busan New Port Anchorages. Finally, based on the study results, more efficient port environmental management will be achieved through the institutional adoption of the proposed economic impact assessment methods for port environmental damages.

• Journal of Navigation and Port Research
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• v.43 no.3
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• pp.166-171
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• 2019

Aids to Navigation(AtoN) Accident can reduce the credibility of AtoN by adding extra works to the administrators, and cause burdens and inconveniences to the users during their navigation leading to social costs (or economic losses). Prior research on social cost estimation model to determine the Encounter cost, Administrative cost and Risk cost on the Aton model was done to estimate the economic losses due to AtoN Accident. However, this research could not provide adequate study results on risk cost estimates. Therefore, this study complements the estimation model presented in the previous study, and the estimated social cost of 249 AtoN Accidents that occurred during the last 10 years (2008-2017) in the Busan Regional Office of Oceans and Fisheries jurisdiction area. The risk cost was estimated using contingent valuation method since the AtoN is a non-market goods. As a result, the social cost of AtoN Accidents for the past 10 years was estimated to total 12.4 billion won including Encounter cost of 3.1 billion won (25.38%), Administrative cost of 1.7 billion won (13.62%), and Risk cost of 7.5 billion won (61.01%).

• Proceedings of the KAIS Fall Conference
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• 2012.05a
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• pp.149-152
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• 2012

본 연구의 목적은 농촌진흥청 국립원예특작과학원이 개발한 포도 저장용 유황패드 개발의 기술가치를 평가하는 것이다. 이는 농업 R&D사업의 효율성과 실용성 제고를 위하여 이용될 수 있을 것이다. 분석결과에 따르면, 장기저장용 살균패드 개발에 따른 기술가치평가액(할인율 7.3% 기준)은 최대 2,441.735억원, 최소 2,183.26억원 평균 2,312.498억원으로 추정된다. 내부수익율 IRR의 값은 가정했던 할인율(6%~10%)보다 훨씬 크고, 순현재가치(NPV)는 영보다 훨씬 크며, B/C 비율도 700 이상으로 나타나 장기저장용 유황패드개발사업의 경제적 타당성은 있는 것으로 판단된다.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.781-784
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• 2011

본 연구의 목적은 농촌진흥청 국립원예특작과학원 감귤시험장에서 개발된 감귤신품종인 하례조생의 개발의 기술가치를 평가하는 것이다. 이는 농업 R&D사업의 효율성과 실용성 제고를 위하여 이용될 수 있을 것이다. 분석결과에 따르면, 감귤신품종 개발에 따른 기술가치평가액은 할인율 수준에 따라 최소 638.7억 원 (할인율 10%)에서 최대 1,088.7억 원(할인율 6%), 평균 829.17억 원(할인율 8%)으로 추정되고, 내부수익율 IRR의 값은 가정했던 할인율(6%~10%)보다 훨씬 크고, 순현재가치(NPV)는 영보다 훨씬 크며, B/C 비율도 60 이상으로 나타나 신품종개발사업의 경제적 타당성은 있는 것으로 판단된다.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.148-151
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• 2011

본 연구의 목적은 농촌진흥청 국립원예특작과학원 감귤시험장에서 개발된 감귤 다공질 필름 멀칭재배법의 기술가치를 평가하는 것이다. 이는 농업 R&D사업의 효율성과 실용성 제고를 위하여 이용될 수 있을 것이다. 분석결과에 따르면, 감귤다공질 필름 멀칭 재배법 개발에 따른 기술가치평가액은 할인율 수준에 따라 최소 421.64억 원(할인율 10%)에서 최대 550.18억 원(할인율 6%), 평균 480.34억 원(할인율 8%)으로 추정되고, 내부수익율 IRR의 값은 가정했던 할인율(6%~10%)보다 훨씬 크고, 순현재가치(NPV)는 영보다 훨씬 크며, B/C 비율도 20 이상으로 나타나 감귤 다공질 필름 멀칭 재배법 개발사업의 경제적 타당성은 있는 것으로 판단된다.

• Review of Culture and Economy
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• v.17 no.2
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• pp.81-102
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• 2014

As carbon dioxide, the main greenhouse gas, is generally emitted by vehicles, the development and distribution of electric cars is important for the sustainability of environmentally-friendly tourism, especially in national parks. National parks in Korea, however, still see the use of traditional vehicles powered by internal combustion engines in the handling of visitors and the transportation of goods and staff. Such engines being the cause of environmental problems such as exhaust emission and noise pollution, the introduction of electric cars in national parks is needed. This study aims to analyze the economic value of electric cars in national parks as well as contribute to the development of the Green Transportation model in tourism destinations. The study used a logit model to estimate the willingness to pay for the introduction of electric cars in national parks. Adults over the age of twenty, with gender and age apportioned equally, were surveyed using questionnaires that included dichotomous as well as demographic questions. The findings show that the amount an individual is willing to pay for the purpose of environmental conservation is 3,948 won, while the value the national parks would derive from the use of electric cars is 56,138,130,000 won. The introduction of electric cars in national parks is expected to offer both direct and indirect benefits while helping to improving the environment of the national parks by eliminating exhaust emission and noise. This introduction would also be a response to climate change that can be taken by society as a whole.

• Journal of Navigation and Port Research
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• v.26 no.4
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• pp.383-390
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• 2002

The time cost of ship end cargoes is one of the most important data for decision-making of port investment and operational efficiency. Studies in this area were initiated internationally by Goss and Mann in late 70's and also done in Korea 10 years ago using the same methodology as Goss. The main purpose of this paper is to revisit to estimate the time cost using updated data. The estimation was undertaken sampling data on various investment and operating costs by vessel from 205 vessels, comprising 47.5％ of the notional fleet in Korea as well as on cargoes from international trade statistics. Compared with the study of 10 years ago, major finding of this research is that time costs of liquid and dry bulk carriers have increased, in case of the former type, showing almost doubled cost increase. The increase is deemed to be caused by very expensive LNG carriers. Lowered social discount rate in this study compared with 10 years ago, in general, has mused the costs to stay at similar level to the previous study. Sensitivity tests were conducted using various social discount rates.