• Journal of the Korea Institute of Building Construction
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• v.22 no.4
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• pp.391-402
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• 2022

With the number of social overhead capital(SOC) projects that introduce private capital on the rise, overseas construction global companies today need to establish and advance their overseas order strategies. In this context, the purpose of this study is to develop the public private partnership(PPP) capacity evaluation model for developing countries and use it for domestic overseas construction companies to establish strategies for overseas expansion. The PPP competency evaluation model analyzes the importance of PPP competency evaluation items and infrastructure environment competency evaluation items through a review of previous studies and an interview survey with overseas construction experts. Through the above analysis results and expert surveys, problems that may occur when overseas construction companies enter the PPP market were derived, and improvement measures were proposed. Countries with a high probability of overseas construction companies entering the PPP market were determined to be those that have a mature PPP system, low risk in construction, and a good entry environment with a high infrastructure market size and growth rate. In addition, a lack of PPP investment experience, the absence of information on the infrastructure environment, and a shortage of PPP experts were identified as problems when entering the overseas construction PPP market. As an improvement measure, it was suggested to enter in cooperation with domestic and foreign companies. In addition, a plan was proposed to develop a curriculum to secure experts in areas such as PPP finance and contracts and to provide PPP information for each country. These findings are expected to contribute to overseas construction companies proposing strategies for entering the overseas construction market and using them for overseas expansion strategies and policy establishment.

• Journal of Korean Tunnelling and Underground Space Association
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• v.9 no.1
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• pp.63-74
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• 2007

Unexpected ground conditions have always been a major problem for the construction of tunnel. Therefore, it is necessary to evaluate the risk capacity before and/or during construction of new tunnel. This paper presents the simplified risk assessment system using modified stability number (N), namely Underground Risk Index (URI) system, to evaluate the tunnel risk possibility in the design stage. URI is a scoring system for risk possibility by rating the each appraisal elements. The modified stability number (N) which is one of risk factor in the Interaction Matrix parameters such as RQD, UCS, weathering, overburden, stability number, ground water-table, RMR, permeability and so on, is used in the system. In addition, the case study is performed in order to verify the applicability of URI-system in practice.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.231-234
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• 2011

기존 국내원전의 화재 PSA는 기존 EPRI가 개발한 방법론을 이용하여 화재 PSA를 수행하여 오고 있다. 미국 NRC는 EPRI와의 공동연구를 통하여 새로운 PSA 방법론(NUREG/CR-6850)을 개발하였고, NFPA-805 코드를 적용하는 미국 원자력발전소들에 대해서 이 방법론을 적용한 PSA를 수행하는 것을 권고하고 있다. 본 논문에서는 국내 원전의 참조 주제어실을 대상으로 신규 방법론을 적용하여 노심손상빈도 영향을 평가하였고, 국내원전에 신규 방법론 적용시 논의되어야 할 사항들을 포함하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.695-698
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• 2014

본 논문은 AHP의사결정 기법의 계층적 분석과 자산 및 부실채권에 대한 예측 평가르 수행하는 프레임워크를 설계하고 위험탐지 분석 시나리오 등을 통해 상황변화에 따른 모니터링에서 수집된 자료를 수집, 분석할 수 있는 포렌식 준비도 모형을 제안한다. 제안하는 시스템은 기업에서 운영하고 있는 기존의 레거시 시스템과 연계하여 자산 및 부실예측평가 항목을 다양한 속성에 따라 그룹화하고 분석을 수행함으로써 기업의 자산과 리스크를 보다 효율적이고 안정적으로 관리할 수 있으며, 부실 자산에 대한 관리와 회수를 통해 기업 경쟁력 및 수익률을 향상시킬 수 있다. 또한 포렌식 준비도와 분석 모니터링을 활용하여 민사 및 형사 소송 등의 기업 간 분쟁에 대하여 수집된 증거자료를 제공할 수 있으며, 민원발생과 기타 사고를 예방하고 처리비용을 줄일 수 있다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.10a
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• pp.216-223
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• 2010

원자력발전소의 방화지역에서 화재가 발생할 경우 케이블의 화재리스크는 온도, 열속, 화염 등 열적 특성에 의해 평가된다. 원전의 안전정지 기능에 사용되는 각종 케이블은 설계관리 및 성능분석을 위해 화재실증실험으로 열적 특성을 실측하여야 하지만 다양한 화재시나리오에 대한 실험 조건 확보와 실험 비용 등 제약이 따른다. 이에 따라 화재모델 FDS (Fire Dynamics Simulator)의 최신버전에 포함된 THIEF (Thermally-Induced Electrical Failure) 모델을 이용하여 국내 원전의 안전정지 케이블에 대한 화재모델링 분석을 수행하였다. 이 연구에서는 케이블이 설치된 형태에 따라 일정 열속에 대한 자켓 온도와 경계조건에 대한 온도분포를 분석하였다. 본 연구 결과 THIEF 모델은 원전 방화지역의 화재에서 안전정지 케이블의 내부온도를 예측할 수 있는 화재모델로 사용가능한 것으로 확인되었다.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.73-73
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• 2023

전 세계적으로 기후변화의 영향이 심화되면서, 예상치 못한 가뭄 지속에 따른 물부족 문제 역시 심각해지고 있으며, 국제사회 및 국내외 기업들은 기후변화 심화에 따른 물 리스크를 관리하기 위한 Water Positive 시스템의 도입, ESG 경영, 환경공시 강화 등을 추진하고 있다. 우리나라의 경우 최근 광주·전라남도 지역에서 가뭄이 발생하여, 기업과 지역주민들이 물절약 캠페인을 벌이고, 공장 정비 일정을 변경하는 등의 대응을 하고 있으며, 중앙 정부 및 지방 정부 역시 물 부족대응을 위한 다양한 정책을 추진하고 있다. 본 연구는 이와 같이 기후변화로 인해 심화되는 가뭄대응에 대한 경제적 가치를 추정하는 것을 목적으로 수행되었다. 특히 최근 지속되는 가뭄으로 물부족이 심각한 광주 및 전라남도 지역 주민을 대상으로 물부족 문제 대응에 대한 경제적 가치를 산정해보았다. 다양한 시나리오 하에서 분석이 가능하도록 단위 가치를 추정할 수 있는 선택실험법을 적용하였으며, 광주 및 전라남도 지역의 소득이 있는 1,000가구를 대상으로 지역별·연령별 표본설계를 하였다. 조사된 결과를 바탕으로 추정된 경제적 가치는 다양한 물부족 대응 프로젝트, 정책 등의 평가시 기초자료로 활용될 수 있을 것이다.

• Journal of the Korea Institute of Building Construction
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• v.18 no.4
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• pp.375-384
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• 2018

Due to the downturn in the local construction business, entry into the overseas markets has been regarded as one of the core tasks of the building sector and the government. Thus, entry into overseas markets, not only by large and middle-standing enterprises, but also by small and medium sized enterprises, has recently become a major construction policy. Therefore, this study identified and evaluated overseas construction support policies in the field of construction engineering, ranked them as the policies for developing market development funds, fostering and educating expert workers, and supporting the provision of information on winning orders. Through these policy assessment results, the study proposed improvement measures from the government and from the business side. As for the government viewpoint, a measure of providing information suited to engineers in design companies, project manager (PM), construction manager (CM), a measure of producing skillful workers through the expansion of education support policies, and the promotion of specialized overseas workforce in the construction engineering sector were proposed. In the construction engineering industry, this study suggested measures for securing global expert manpower, sharing performance of overseas construction market development project, strengthening construction project management capacity, and strengthening risk management.

• Journal of Digital Convergence
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• v.18 no.12
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• pp.243-249
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• 2020

This study analyzes the earnings management that can occur in the process of public offering in the process of SMEs reducing cost of capital, risks and seeking opportunities for direct financing. Since a company is subject to strict supervision during the IPO process, it is possible to prevent the phenomenon that the company value evaluated in the market is underestimated, or to perform earnings management in consideration of overestimation. This study attempted to verify the degree of earnings management through discretionary accruals and actual earnings management values that can affect the earnings ratio of the IPO of a company. For this study, total accruals were calculated and analyzed through discretionary accruals, sales, costs, and actual earnings management adjustments from production activities. As a result of the analysis, discretionary accruals, which are the countermeasures for earnings management during the listing process, have a positive(+) relationship in both the stock price return and the sales adjustment value, which can be viewed as a factor that induces high valuation. As a result of this, there may be a risk of adverse selection for the benefit amount, and information asymmetry may exist for public offering stocks. This study can provide useful guidelines for evaluating corporate value to domestic SMEs and investors that do business with Chinese companies as well as China through the current and type of earnings management of Chinese listed companies.

• Journal of the Korean Society of Safety
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• v.25 no.3
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• pp.118-122
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• 2010

In order to provide the necessary operation flexibility during the Nuclear power operation, the extension of existing allowed outage time(AOT) is needed. The extension of AOT affects the Nuclear power plant safety. The validity of changed technical specification requirements should be proved by the safety assessments. In this paper, we evaluated the extension of emergency diesel generator AOT for a single inoperable emergency diesel generator(EDG) from 3days to 7days, 10days and 14days. Finally, the AOT extension contributes the NPP performances through decreasing the unexpected plant trips, reinforcing maintenance and avoiding risks due to unnecessary operation mode changes when the NPP is under the surveillance tests or maintenance.

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.271-277
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• 2018

The aim of this study was to select useful items for assessing fall risk in community-dwelling elderly. This study assumed five fall risk factors: Symptoms of falling, physical function, disease and physical symptoms, environment, and behavior and character based on previous studies. The questionnaire consisted of 44 items according to the contents validation, crossover analysis and factor analysis. The Korean version of the Fall Risk Assessment Scale (FRA-K) will be used as a useful tool to improve the fall problems perceived to be serious social problems and to provide important information for prevention of falls.