• Economic and Environmental Geology
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• v.40 no.6
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• pp.805-814
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• 2007

To offer R&D infrastructure on geoscience and mineral resources area, a new project was launched in KIGAM to build-up of a 'Ready-Operational Physical Properties Laboratory'. In this study, we evaluate the economic impact of the concentration of physical properties measurements equipment and facilities in KIGAM. As centralization of physical properties measurements of earth samples, the direct effects, annual measurement cost reduction and equipment opportunity cost are expected 1,095 million Won (US$1.095 million) and 1,440 million Won (US$1.440 million) in present aspects, and 1,110 million Won (US$1.110 million) and 1,527 million Won (US$1.527 million) in future aspects. The indirect economic effect by increasing of the relative papers is estimated 7,524 million Won (US$7.524 million) by the input cost approach, and the contributions of gross domestic product are 8,010 billion Won (US$8.010 billion) in the heavy construction industry and 260 billion Won (US$0.260 billion) in the mining and quarrying industry.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.9-9
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• 2020

하천공간은 홍수방어와 용수사용을 위한 수자원관리 측면의 공간에서 벗어나 국민들의 삶의 질 제고와 이용편익, 생활환경의 중심 공간으로 자리매김하고 있다. 국민의 하천에 대한 눈높이가 상승하고 있음에도 하천공간이 주는 여러 가치에 대해서는 학술적 검토가 미진하였으며, 그에 따라 정책에도 제한적으로 반영되고 있다. 본 연구에서는 설문조사, 요인분석 등을 통해 주민 입장에서 부여할 수 있는 하천의 다면적 가치를 식별하고 주민친화적 관리를 위한 성과지표를 개발하고자 하였다. 특히 본 연구가 개발하고자 하는 성과지표 체계는 기존 방식대로 객관화·정량화가 불가능한 주민의 정성적·주관적 만족도를 측정할 수 있는 지표를 개발하는 것에 목적이 있다. 먼저, 관련된 각종 선행연구 및 도로 등 타분야 사례, 일본 등 해외 사례 등을 종합하여 하천의 4가지 사업부문인 치수, 이수, 환경, 친수를 모두 포괄하는 지표체계안을 구축하였다. 다만 본 연구가 주민친화적 하천관리를 목적으로 하므로 상대적으로 환경·친수 부문 지표의 비중이 높았으며, 총 지표 개수는 25개로 도출하였다. 도출한 지표체계안을 바탕으로 주민 대상 설문조사를 실시하였으며, 요인분석법을 활용하여 지표체계를 재정리하였다. 요인분석법은 학술적·실무적으로 가장 널리 사용되는 PCA 추출법과 Varimax 회전법을 채택하였으며, KMO 및 Barlett's 검정법을 활용하여 자료 검정을 수행하였다. 그 결과, 하천 부문 주민만족 요인은 3가지로 나타났으며, 이를 각각 '최소친수기반요인', '안전·청결기반요인', '친수활동지원요인'으로 정의하였다. 요인 분석 결과를 바탕으로, 3개 영역, 6개 세부 영역, 24개 평가항목으로 구성된 성과지표 체계를 도출하였다. 마련된 성과지표의 항목별 중요도를 전국 대상 설문조사를 통해 분석한 결과, 영역 중에서는 '안전·청결기반요인'이 가장 중요한 것으로 나타났으며, 특징적으로는 CCTV, 장애·위험물 제거, 수질·공간청결성, 공공화장실 만족성 등이 중요한 것으로 나타났다. 또한 대전지역 국가하천과 지방하천을 사례지역으로 성과지표를 비교한 결과, 국가하천의 성과가 대체로 높게 나타났으며 '최소친수기반요인' 영역의 성과가 상대적으로 높은 것으로 나타났다.

• Journal of Korean Society of Transportation
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• v.30 no.1
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• pp.135-147
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• 2012

The benefit of traffic information on variable message sign can be divided into two. At the public level, the benefit of ATIS is the travel time saving, which is not only induced from ATIS, but also mixed with that of ATMS. In the economic appraisal of ITS, the benefit of ATIS has so far been regarded as the derived benefit from ATMS. At the user level, the benefit of ATIS is reduced driver uncertainty through the forward traffic status information. User can benefit from the information on VMS and therefore may have the willingness to pay for it. Recently attempt to qualify the value of information on VMS was increased, but there was a danger of distorting or over-estimates of the ATIS benefit because the related studies didn't consider the time-dependent attributes of traffic information and provided the single value. Estimates of the time-varying value should be needed for a rigorous economic appraisal of ATIS. In this study, we varied the value of information on VMS according to peak and non peak trip and verified the hypothesis that time-varying of value was statistically significant.

• Environmental and Resource Economics Review
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• v.32 no.4
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• pp.239-266
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• 2023

This study applied the contingent valuation method (CVM) to measure the benefits from an urban liner park that will be created as part of the Gyeongin Expressway downgrade project by Inchon metropolitan city government. The Incheon city government plans to create a liner park (10.5 km) in the middle of the downgraded road to provide leisure and recreation services to residents, and plans to remove retaining walls and soundproof walls to improve the urban residential environment. Considering the characteristics of a liner park that spans several districts in Incheon city and the downgraded road that will be passed by residents of nearby cities as well as Incheon residents, the target population included residents of part of Seoul and several cities surrounding Incheon. In a CVM survey of 1,000 respondents conducted in April 2018, about 70% of the respondents perceived this project positively. About 50% of 757 respondents, excluding protest bids respondents, were willing to pay additional taxes for this project. The more the respondents favored the creation of a linear park and the more they thought that this project would improve the surrounding residential environment, the more positively they evaluated the additional tax payment. The average annual willingness to pay for this project was about 15,300 won for Incheon residents and 6,800 won for residents of Seoul metropolitan area. It is interesting to observe that residents of Seoul metropolitan area, who are not directly affected by this project, were willing to pay a considerable amount for this project.

• Journal of Environmental Policy
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• v.13 no.4
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• pp.3-49
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• 2014

Growing interest of stakeholders on corporate responsibilities for environment and tightening environmental regulations are highlighting the importance of environmental management more than ever. However, companies' awareness of the importance of environment is still falling behind, and related academic works have not shown consistent conclusions on the relationship between environmental performance and economic performance. One of the reasons is different ways of measuring these two performances. The evaluation scope of economic performance is relatively narrow and the performance can be measured by a unified unit such as price, while the scope of environmental performance is diverse and a wide range of units are used for measuring environmental performances instead of using a single unified unit. Therefore, the results of works can be different depending on the performance indicators selected. In order to resolve this problem, generalized and standardized performance indicators should be developed. In particular, the performance indicators should be able to cover the concepts of both environmental and economic performances because the recent idea of environmental management has expanded to encompass the concept of sustainability. Another reason is that most of the current researches tend to focus on the motive of environmental investments and environmental performance, and do not offer a guideline for an effective implementation strategy for environmental management. For example, a process improvement strategy or a market discrimination strategy can be deployed through comparing the environment competitiveness among the companies in the same or similar industries, so that a virtuous cyclical relationship between environmental and economic performances can be secured. A novel method for measuring eco-efficiency by utilizing Data Envelopment Analysis (DEA), which is able to combine multiple environmental and economic performances, is proposed in this report. Based on the eco-efficiencies, the environmental competitiveness is analyzed and the optimal combination of inputs and outputs are recommended for improving the eco-efficiencies of inefficient firms. Furthermore, the panel analysis is applied to the causal relationship between eco-efficiency and economic performance, and the pooled regression model is used to investigate the relationship between eco-efficiency and economic performance. The four-year eco-efficiencies between 2010 and 2013 of 23 companies are obtained from the DEA analysis; a comparison of efficiencies among 23 companies is carried out in terms of technical efficiency(TE), pure technical efficiency(PTE) and scale efficiency(SE), and then a set of recommendations for optimal combination of inputs and outputs are suggested for the inefficient companies. Furthermore, the experimental results with the panel analysis have demonstrated the causality from eco-efficiency to economic performance. The results of the pooled regression have shown that eco-efficiency positively affect financial perform ances(ROA and ROS) of the companies, as well as firm values(Tobin Q, stock price, and stock returns). This report proposes a novel approach for generating standardized performance indicators obtained from multiple environmental and economic performances, so that it is able to enhance the generality of relevant researches and provide a deep insight into the sustainability of environmental management. Furthermore, using efficiency indicators obtained from the DEA model, the cause of change in eco-efficiency can be investigated and an effective strategy for environmental management can be suggested. Finally, this report can be a motive for environmental management by providing empirical evidence that environmental investments can improve economic performance.

• Journal of Korea Water Resources Association
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• v.44 no.2
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• pp.125-134
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• 2011

The paper is to estimate willingness-to-pay (WTP) for residential water quality improvement in Busan, using non-parametric approach. There are several significant advantages of non-parametric approach, compared to parametric methods. That is, no probability distribution assumption is necessary so that there are no needs to assume or test goodness of fit, model specification and heteroscedasticity statistically. For the reliability and the validity of contingent valuation method a survey was conducted for 665 respondents, who were sampled by stratified random sampling method, by personal interview method. The result of mean WTP for residential water quality improvement in Busan was estimated to be 3,190 won to 3,331 won per month per household, while median WTP being 1,750 won. Provided that our sample is broadly representative of the Busan's population, an estimate of the annual aggregated benefit of residential water improvement for all Busan households is approximately 50.2 billion won in case of mean WTP or 27.5 billion won in case of median WTP.

• Journal of Energy Engineering
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• v.4 no.2
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• pp.270-277
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• 1995

생활수준의 향상으로 따라 민생용 에너지의 소비량이 급격히 증가함에 따라 일상생활에서 발생되는 폐수의 양과 온도가 높아지면서 이들은 주요 에너지자원의 대상으로 부각되고 있다. 즉, 폐수열은 열원으로서의 경제성이 향상되어 에너지자원으로서의 잠재력이 높아지고 있으며, 또한 화석에너지의 과다 사용을 인한 환경오염이 심각한 사회문제로 부각되면서 이들 에너지의 유효이용에 대한 관심이 높아지고 있다. 본 연구는 일상생활에서 발생되는 생활폐수를 대상으로 냉·난방에너지원으로서의 활용 가치를 평가히기 위한 열특성을 파악하고, 이 폐수열을 열원으로 하는 熱펌프시스템을 제작·설치하여 운전 성능을 파악하므로서 장차의 에너지수요에 대응하기 위한 기초자료를 제시하는데 목적이 있다. 이를 위해 아파트 단지를 대상으로 폐수열의 계절별 온도분포를 측정하고, 열원의 특성에 적합한 폐수열교환기, 세척장치 등 요소기기의 구조를 도출하였으며 이를 이용한 熱펌프시스템을 제작하여 성능실험을 수행하였다. 실험결과 난방기의 성적계수(COP)h를 3.5이상으로 유지할 수 있는 비교적 경제성이 높은 熱펌프시스템의 구성이 가능한 것으로 나타났다.

• Journal of Digital Convergence
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• v.10 no.4
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• pp.317-322
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• 2012

Public Health "NO-Smoking Clinic" smokers nine times more than 6 months smoking cessation counseling services and CO measurement, nicotine aids(patches, gum and candy) to provide. Behavioral enrichment items and memorabilia, including the provision of smoking cessation, smoking, andsmokingreducesinductionpracticeto improve the health of local residents to promote. Lifestyle habits such as smoking and excessive drinking, such as hyperlipidemia, and obesity is a major factor causing chronic disease, economic loss, and even new philosophy of life as a healthy culture is a factor that destroys. Smoking, heavy drinking, such as healthy life styles and cultural values of life as well as the economic value of medical care and also when you consider that there is a close relationship, such as smoking prevention and smoking cessation and moderation of the business and institutions involved in health education institutional support for the "NO-Smoking Clinic" should be parallel to the landing.

• Journal of Navigation and Port Research
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• v.41 no.4
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• pp.243-250
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• 2017

Seaports are not longer considered to be single entities for which the main activity is to load and discharge cargo, but rather as fundamental hubs within a complex supply chain serving global production networks. From a public perspective, they hold a key role in terms of their economic impact at the local, regional and national level by generating value added activity and employment. This issue is becoming increasingly pivotal for ports and their stakeholders. The objective of the study is to estimate a regression model of the value added activity and employment figures of 17 Italian ports for which there are no publications available. Concerning port system reform in Italy, the research intends to provide policy makers with a tool to measure the effects produced by ports and their importance to local communities and regions. The paper finds that in all Italian ports, the direct effects are larger than the indirect effects, and the bigger socio-economic effects are found in the biggest ports.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.4
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• pp.1625-1632
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• 2012

The purpose of this study is to analyze whether asset sales contributed to increase of the shareholder value of the seller and the buyer in Japan. The period of analysis is 2000-2007. As a result of event study, Although the stockholder of the seller earn positive abnormal returns at the announcement of a asset sales, most stockholders of the buyer were break even. However, the buyer which purchase related asset get positive abnormal returns. Furthermore, when using a matched seller-buyer, we find that asset sales are firm value enhancing for the seller and buyer. Furthermore, we verify whether the excess return depends on the financial condition, and the managerial performance. we find that seller gains are related to the seller's managerial performance, leverage ratio, and buyer gains are related to the leverage ratio, foreigner holdings ratio. we conclude that lender and outside monitoring lead to increase of firm value.