• Environmental Analysis Health and Toxicology
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• 제4권1_2호
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• pp.55-65
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• 1989

Nevertheless the serious environmental pollution in Korea has been discussed in concern with health effect, the significant effect are not determined easily. Toxicological method has been used to establish safe levels of exposure for environmental pollutants to have threshold health effect below which significant effects are unlikely to occur. However the conventional method cannot to establish safe levels of exposure for non-threshold pollutants have been used to express comprehensive pollution degree, not in detailed toxic effects. Acceptable exposure or risk levels are decides by policymakers who consider descriptions and estimates of risks together with social and economic benefits. This paper focuses on the concept development of risk assessment and describes some risks of environmental pollution based on the surveyed date in Korea. The current concepts of risk assessment in policy descisions can be explored and areas for possible improvement, given current scientific knowledge are identified. The experience of foreign countries can provide a realistic basis for evaluating the existing data of environmental pollutants. To improve the environmental quality, risk regulation should be managed as soon as possible in Korea.

• 한국항해항만학회지
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• 제46권2호
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• pp.145-157
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• 2022

Due to the global epidemic of infectious diseases, it has become important for all industries to respond to the risk of infectious diseases. Ports in each country are also responding to the risk of infectious diseases, but the occurrence of infectious diseases in ports of various countries is causing a lot of damage to the logistics of ports. Korea is in the same situation, and cases of infectious diseases in ports are steadily being announced. Therefore, this paper conducted semi-quantitative Bow-Tie risk assessment by substituting measures to cope with infectious disease risks in Korean ports into actual cases of port infectious diseases in Korea, deriving improvements and suggesting directions. As a result, it was concluded that it was necessary to standardize some of the countermeasures against infectious diseases and develop more countermeasures.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.485-490
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• 2003

최근 대내외적인 건설환경의 급격한 변화와 건설공사의 대형화${\cdot}$복잡화 추세는 내외부적으로 많은 리스크 요인을 증대시키고 있기 때문에, 이에 대한 합리적이고 효율적인 관리방안의 중요성이 크게 대두되고 있다. 본 연구에서는 이러한 리스크 관리방안의 하나로서, 사업추진과정에서의 공사비 증액이 매우 제한되어 있어 입찰단계에서 견적금액의 불확실성 요소(예비비)를 고려해야만 하는 턴키공사 등 대형 건설공사를 대상으로, 이에 내재된 리스크요인의 정량화를 통해 합리적이고 적절한 예비비를 산정할 수 있는 모델을 제시하고자 한다. 예비비 산정모델의 개발을 위하여 실제 수행된 프로젝트를 선정하여 각 공사의 예비비 집행현황, 공사비 현황 등의 자료를 토대로 공사비에 영향을 미치는 인자를 도출하였으며, 몬테칼로 시뮬레이션(Monte Carlo Simulation)과 영향도(Influence Diagram), 의사결정 수형도(Decision Tree)를 혼합한 CRM(Cost Risk Model)을 적용하여 이러한 리스크 인자의 영향을 구조화하였다. 또한 구축된 모델을 기 완료된 대형공사에 적용하여 그 타당성을 검증하고자 하였다.

• 보건행정학회지
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• 제25권3호
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• pp.197-206
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• 2015

Background: The purpose of this study was to propose a method for developing a measure of hospital-wide all-cause risk-standardized readmissions using administrative claims data in Korea and to discuss further considerations in the refinement and implementation of the readmission measure. Methods: By adapting the methodology of the United States Center for Medicare & Medicaid Services for creating a 30-day readmission measure, we developed a 6-step approach for generating a comparable measure using Korean datasets. Using the 2010 Korean National Health Insurance (NHI) claims data as the development dataset, hierarchical regression models were fitted to calculate a hospital-wide all-cause risk-standardized readmission measure. Six regression models were fitted to calculate the readmission rates of six clinical condition groups, respectively and a single, weighted, overall readmission rate was calculated from the readmission rates of these subgroups. Lastly, the case mix differences among hospitals were risk-adjusted using patient-level comorbidity variables. The model was validated using the 2009 NHI claims data as the validation dataset. Results: The unadjusted, hospital-wide all-cause readmission rate was 13.37%, and the adjusted risk-standardized rate was 10.90%, varying by hospital type. The highest risk-standardized readmission rate was in hospitals (11.43%), followed by general hospitals (9.40%) and tertiary hospitals (7.04%). Conclusion: The newly developed, hospital-wide all-cause readmission measure can be used in quality and performance evaluations of hospitals in Korea. Needed are further methodological refinements of the readmission measures and also strategies to implement the measure as a hospital performance indicator.

• 산업공학
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• 제15권2호
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• pp.133-146
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• 2002

In July 2002, law of product liability will be established in Korea. Therefore, prevention for product liability(PL) will be immediately needed for many companies. So, in this paper, following topics will be discussed: 1) what are product liability and product safety, 2) why they are needed, 3) why important, 4) what's the difference between considering PL and not considering PL for companies, 5 ) what are risk management methods and risk evaluation system, 6) what is SASA(Systematic Approach to Accident Scenario Analysis) method for applying PL, 7) providing a final conclusion and discussion for future PL law.

• Asia Pacific Journal of Business Review
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• 제5권1호
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• pp.11-19
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• 2020

This study is a review on Risk analysis of foreign direct investments in innovative projects of Uzbekistan. The study will examine SWOT and PESTL analysis as an effective situation analysis tool which plays an important role in the fields of management, marketing, and in any fields of requiring strategic planning. SWOT is an analysis method used to evaluate the 'strengths', 'weaknesses', 'opportunities', 'threats' and PESTL is an analysis tool used for measuring the 'political', 'economical', 'social', 'technological' and 'low' risks involved in a various sphere of economy. In this study, firstly the essence of SWOT and PESTL analysis is explained, secondly the components of SWOT and PESTL analysis is examined. The paper includes risk analysis for further investigation to innovation sector of Uzbekistan economy.

• Journal of the Korean Data and Information Science Society
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• 제22권3호
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• pp.589-596
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• 2011

The conditional autoregressive value at risk (CAViaR) model is useful for risk management, which does not require the assumption that the conditional distribution does not vary over time but the volatility does. But it does not provide volatility forecasts, which are needed for several important applications such as option pricing and portfolio management. For a variety of probability distributions, it is known that there is a constant relationship between the standard deviation and the distance between symmetric quantiles in the tails of the distribution. This inspires us to use a support vector quantile regression (SVQR) for volatility forecasts with the distance between CAViaR forecasts of symmetric quantiles. Simulated example and real example are provided to indicate the usefulness of proposed forecasting method for volatility.

• 대한안전경영과학회지
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• 제22권2호
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• pp.39-46
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• 2020

This paper recognizes the risk of ignition of air fryer (machine that can cook fried dishes with hot air without oil) that is far exceeding the sales rate of microwave ovens, which is necessary to modern household kitchen, and identifies fire risk through the operation principle of the process of heat transfer, and the main structure of the machine. The fire test that we conducted is to observe the risk of ignition of the machine due to the damage to the safety system and the possibility of igniting oil paper along with food, to experiment with the possibility of ignition due to blockage of the exhaust due to obstacles, and accumulation of oil stains on the hot wire, and to present the method of fire control and devise countermeasures.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.171-172
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• 2019

본 논문에서는 위험 발생상황에서 모니터링 객체에 대한 웹 지도 탐색 개발을 위하여 동적인 방식을 고려한다. 객체의 이동에서 관리시스템의 위치 인식 메카니즘을 기반으로 위험상황에 대해 위치를 실시간적으로 인식할 수 있도록 한다.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.1002-1006
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• 2005

When we compare CM system with Design Bid Build system, we can see two striking features in CM system. First, CMr participates in construction team along with Owner, Designer and Constructor. The newcomer can change boundaries of function and responsibility. Second, Compatibility through each phase and Objectivity of decision-making become more important, because relation among stakeholders changes from a rectilinear to a network. However, it is not clear how the risk of completion is reasonably treated. So we have to think about the relations between Owner and CMr, CMr and Specialist Contractor from a point of trade risk. This paper covers them.