• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2005년도 추계학술대회 및 정기총회
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• pp.441-456
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• 2005

The purpose of this paper is to introduce the concept of negative DEA, which aims at identifying worst performers by placing them on the efficient frontier, This paper also proposes to use a layering technique instead of the traditional cut-off point approach, since this enables incorporation of risk attitudes and risk-based pricing. The results of the empirical application on credit risk evaluation validate the method which is proposed in this paper.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2002년도 추계 학술발표회 논문집
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• pp.285-291
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• 2002

This paper proposes the concept and the general framework of the risk-based seismic design. Because earthquakes and the behaviors of structures are very unpredictable, probabilistic seismic design methods have been proposed after deterministic design methods. Considering these changes, we can find that the important point of seismic design is not the structural behavior itself, but the consequence of structural behavior under possible earthquakes. Risk-based seismic design can tell these consequences under any earthquakes. In this paper, structural confidences are considered by using fragility curve, and risk is modeled by failure probability and consequence-property damage cost, casualty cost.

• 한국전자통신학회논문지
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• 제12권2호
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• pp.255-260
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• 2017

우리나라 2015년 차량과 보행자간의 교통사고는 전체 사고의 38.8%에 달한다. 본 연구는 차량과 보행자간의 상충상황에 대한 위험도를 측정할 수 있는 시스템의 설계방안을 제안한다. 1차적으로 차량과 보행자의 위치, 속도, 방향성을 검지하고 이를 간의 상충지점을 추정한다. 이후 상충지점까지의 횡단지점의 보행자의 도착과 그 지점에 접근하는 차량과의 시간 차이인 보행자안전간격(PSM, Pedestrian Safety Margin)을 추정하여 상충위험도를 정량화한다. 본 연구에서는 외부 모니터링 기반 평가모듈과 개인의 착용형 모듈을 통하여 각 데이터를 취득하고 이를 위한 하드웨어 및 소프트웨어 설계 내용을 제시하고 구현하였다. 향후 이러한 시스템은 도로의 위험도 개선시설 설계, 노인보호구역 지정 등의 의사결정에 활용될 수 있을 것으로 사료된다.

• 여성건강간호학회지
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• 제16권3호
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• pp.234-244
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• 2010

Purpose: This study determined the level of stress and type of coping style of spouses with high-risk pregnant women. Methods: Subjects were 102 spouses with high-risk pregnant women at 6 hospitals in Seoul and Gyeonggi province from January to August, 2009. The tools for this study were stress scale and coping scale. The data were analyzed by t-test, ANOVA, Scheffe's test and Pearson's correlation coefficient. Results: The average score of subjects stress was 2.18 and coping score was 2.46 point out of 4.00. The highest score of stress categories was 2.44 point in emotional problems and the lowest score was 1.72 in communication and support resources. The stress level was significant differences according to length of marriage, number of hospital visits, satisfaction with marriage relationship, hospitalization days and gestational age respectively. Spouses tended to use an active coping style (2.60) rather than a passive coping style (2.31). There were significant differences according to mother's age and gestational age in active coping and educational level in passive coping. Conclusion: Considering the level of stress coping style and characteristics of high-risk pregnant women's spouses, a nursing intervention should be provided to help them alleviate stress and to encourage active coping.

• 한국지능시스템학회논문지
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• 제21권1호
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• pp.112-119
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• 2011

본 연구는 주변 환경정보와 장애물정보, 위치정보를 이용하여 무인잠수정의 운항 환경에 존재하는 다양한 장애물들에 대한 충돌위험도를 산출하는 시스템을 제안한다. 충돌위험도는 퍼지추론을 사용하여 산출하며, TCPA, DCPA, 거리를 인자로 사용하게 된다. 또한 삼차원환경에서 TCPA와 DCPA를 획득하는 방법을 제안한다. 충돌위험도는 충돌회피시스템에 제공되며, 시뮬레이션을 통하여 그 경제성과 안전성에서의 효율성을 보인다.

• Environmental Analysis Health and Toxicology
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• 제14권4호
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• pp.175-187
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• 1999

To investigate the risk perception of environmental issues, two consequtive surveys were conducted to environmental professionals using a standardized questionnaire from September to October in 1999. The number of subjects were 72 for the first survey and 68 for the second one. The questionnaire was consisted of items such as the degree of environmental pollution in Korea, risk perception of some issues on human health and ecosystem, and seriousness of the problems in the real situation in Korea. For the degree of environmental pollution in Korea, the average risk rating in the second test (7.4 point) was significantly higher than that in the first test (7.2 point). The risk perception on the general human health and ecosystem, and the seriousness in Korea situation were analyzed in the order of ′air pollution′, ′water pollution′,′soil contamination′,′waste′,′toxic chemical pollutants′,′food contamination′,′ocean contamination′, ′odor pollution′, and ′noise pollution′. Also ′toxic chemical pollutants′ problem was perceived to be the highest risk on general human health or ecosystem, and on present situation in Korea. ′Automotive vehicle exhaust′ problem was perceived to be the most severe environmental problems among specific 30 items. ′Industrial source air pollution′,′toxic air pollutants′, and ′domestic and industrial source pollutants to surface water′ were relatively severe environmental problems comparing to other problems. The pollution issues were classified into four categories by two aspects of perception; risk in general setting and seriousness in Korea situation. If the issues were highly serious in Korea and low risk perception in general setting then it is named "the Korea-specific group". Those that were all high score in two aspects, named "the Common group". Those that were all low in two aspects, named "the Nonsignificant group". And the issues were high risk perception in general setting and low seriousness in Korean situation, named "the Latent group".

• 한국신뢰성학회지:신뢰성응용연구
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• 제1권2호
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• pp.109-120
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• 2001

This study reviewed the national standards for risk management to judge whether they are suitable for a product safety management program. Among the standards issued from Australia, New Zealand, Canada, Japan, and UK, the risk management guideline (AS/NZS 4360: 2000) issued jointly from both Australia and New Zealand have better features for product safety management program than any other risk management standards in view point of broad definition of risk concept including opportunities of loss and gain, stepwise composition of management processes applicable iteratively, and integrable form of structure addible to existing management practice. Comparing the three product safety management programs suggested by several authors yielded common features of product safety management program model: (1) organization for product safety, (2) risk identification, (3) risk evaluation, (4) risk treatment, (5) monitoring/communication, and (6) documentation. All of these activities can be performed within risk management framework proposed by AS/NZS 4360.

• Journal of Information Processing Systems
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• 제10권2호
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• pp.240-255
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• 2014

Cloud computing has increasingly been drawing attention these days. Each big company in IT hurries to get a chunk of meat that promises to be a whopping market in the future. At the same time, information is always associated with security and risk problems. Nowadays, the handling of these risks is no longer just a technology problem, with a good deal of literature focusing on risk or security management and framework in the information system. In this paper, we find the specific business meaning of the BMIS model and try to apply and leverage this model to cloud risk. Through a previous study, we select and determine the causal risk factors in cloud service, which are also known as CSFs (Critical Success Factors) in information management. Subsequently, we distribute all selected CSFs into the BMIS model by mapping with ten principles in cloud risk. Finally, by using the leverage points, we try to leverage the model factors and aim to make a resource-optimized, dynamic, general risk control business model for cloud service providers.

• 디지털융복합연구
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• 제19권6호
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• pp.373-385
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• 2021

본 연구에서는 한국청소년정책연구원의 다문화청소년패널 중학교 1학년부터 고등학교 2학년까지 추적한 다섯 시점의 종단자료를 활용하여 부모의 스트레스, 다문화청소년의 심리적 부적응, 학업중단위험이 시간의 흐름에 따른 변화 양상과 세 요인 간의 종단적 상호관련성을 검증하고자 자기회귀교차지연모형을 적용하였다. 분석결과, 첫째, 5개 조사시점에 걸쳐 이전 시점의 부모의 스트레스는 이후 시점의 다문화 청소년의 심리적 부적응, 학업중단위험에 유의한 정(+)적인 영향을 미쳤다. 둘째, 5개 조사시점에 걸쳐 이전 시점의 다문화청소년의 심리적 부적응은 이후 시점의 학업중단위험에 유의한 정(+)적인 영향을 미쳤다. 이러한 분석결과를 토대로 다문화 청소년 부모의 스트레스에 대처하기 위한 다양한 지원방안을 제시하고, 다문화 청소년의 심리적 부적응을 감소시켜 학업중단위험을 예방할 수 있는 정책적 대안을 제시하고자 하였다.

• 중환자간호학회지
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• 제12권2호
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• pp.26-38
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• 2019

Purpose : The aims of this study were to identify the incidence of pressure ulcers and to compare the predictive validities of pressure ulcer risk assessment scales among trauma patients. Methods : This was a prospective observational study. A total of 155 patients admitted to a trauma intensive care unit in a university hospital were enrolled. The predictive validity of the Braden, Cubbin & Jackson, and Waterlow scales were assessed based on the sensitivity, specificity, positive and negative predictive values, and area under the receiver operating characteristic curve (AUC). Results : Of the patients, 14 (9.0%) subsequently developed pressure ulcers. The sensitivity, specificity, positive predictive values, and negative predictive values were 78.6%, 75.9%, 24.4%, and 97.3%, respectively, for the Braden scale (cut-off point of 12); 85.7%, 68.8%, 21.4%, and 98.0%, respectively, for the Cubbin & Jackson scale (cut-off point of 26); and 71.4%, 87.2%, 35.7%, and 96.9%, respectively, for the Waterlow scale (cut-off point of 18). The AUCs were 0.88 (Waterlow), 0.86 (Braden), and 0.85 (Cubbin & Jackson). Conclusion : The findings indicate that the predictive validity values of the Waterlow, Braden, and Cubbin & Jackson scales were similarly high. However, further studies need to also consider clinical usefulness of the scales.