• 한국콘텐츠학회논문지
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• 제13권4호
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• pp.198-207
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• 2013

본 연구는 자연재해에 대한 공중의 위험특성과 위험인식이 위험 심각성에 어떠한 영향을 미치는지를 규명하고자 하였다. 연구결과는 다음과 같다. 첫째, 자연재해 위험평가 차원에서 일반 공중이 인식하는 자연재해의 심각성을 분류한 결과, 지변재해, 풍수해, 한해로 분류되었고, 자연재해 중 태풍을 가장 심각한 자연재해로 인식하였다. 자연재해 대한 위험특성은 '친근하지 않은', '과학에 의해 알려지지 않은', '발견할 수 없는' 등이 비교적 높은 평균을 보여 자연재해를 미지의 위험영역으로 인식하는 경향이 강하였다. 둘째, 공중이 인식하는 자연재해 위험특성과 위험인식 간의 상관관계를 살펴본 결과, 유의한 상관이 있는 것으로 나타났다. 셋째, 자연재해에 대한 위험특성이 위험평가 차원의 심각성에 미치는 영향을 살펴본 결과, 위험특성은 위험평가 차원의 심각성에 정적 영향을 미쳤고, 자연재해 중에서도 호우나 태풍, 홍수와 같은 풍수해를 지변재해나 한해보다 심각한 것으로 인식하였다. 넷째, 공중의 자연재해에 대한 위험인식이 위험평가 차원의 심각성에 미치는 영향을 살펴본 결과, 자연재해에 대한 위험인식은 자연재해의 심각성에 정적 영향을 미쳤고, 자연재해 심각성 중에서도 풍수해를 가장 심각하게 인식하는 것으로 나타났다.

• 디지털융복합연구
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• 제15권7호
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• pp.415-424
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• 2017

본 연구는 공중의 체세포복제기술에 대한 위험특성, 위험심각성, 위험인식 및 위험수용의 관계를 살펴보기 위하여 서울에 거주하는 한국인 300명을 대상으로 IBM SPSS 21 프로그램과 IBM AMOS 21 프로그램을 활용하여 탐색적 요인분석과 확인적 요인분석, 상관관계 분석, 구조모형분석을 수행하였다. 주요결과를 요약 제시하면 다음과 같다. 첫째, 공중의 체세포복제기술에 대한 위험특성은 위험심각성에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 둘째, 공중의 체세포복제기술에 대한 위험특성은 위험인식에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 셋째, 공중의 체세포복제기술에 대한 위험심각성은 위험인식에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 넷째, 공중의 체세포복제기술에 대한 위험특성은 위험수용에 통계적으로 유의한 부적 영향을 미치는 것으로 나타났다. 다섯째, 공중의 체세포복제기술에 대한 위험심각성은 위험수용에 통계적으로 유의한 영향을 미치지 못하였다. 여섯째, 공중의 체세포복제기술에 대한 위험인식은 위험수용에 통계적으로 유의한 영향을 미치지 못하였다.

• 품질경영학회지
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• 제44권2호
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• pp.373-388
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• 2016

Purpose: This paper suggests a hierarchical time delay model to evaluate failure risks in FMEA(failure modes and effects analysis). In place of the conventional RPN(risk priority number), a more reasonable and objective risk metric is proposed under hierarchical failure cause structure considering time delay between a failure mode and its causes. Methods: The structure of failure modes and their corresponding causes are analyzed together with the time gaps between occurrences of causes and failures. Assuming the severity of a failure depends on the length of the delayed time for corrective action, a severity model is developed. Using the expected severity, a risk priority metric is defined. Results: For linear and quadratic types of severity, nice forms of expected severity are derived and a meaningful metric for risk evaluation is defined. Conclusion: The suggested REM(risk evaluation metric) provides a more reasonable and objective risk measure than the conventional RPN for FMEA.

• Child Health Nursing Research
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• 제13권2호
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• pp.136-146
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• 2007

Purpose: The purpose of this study was to develop a tool to assess the severity of illness in high risk newborns. Method: The research design was a methodological study. The tool was developed in 4 stages: first, preliminary items were developed based on a questionnaire about the severity of illness index that was given to 8 health professionals in Neonatal Intensity Care Units (NICU) second, a panel of specialists reduced the preliminary items using 3 validity tests; third, final items were selected from the results of a pre-test. Finally, from July 2005 to May 2006, reliability and validity were tested with a sample of 160 high risk newborns admitted to the NICU. Results: The final tool to identify the severity of illness index in high risk newborns consisted 39 items and Cronbach's alpha coefficient for internal consistency was .922. Using factor analysis, 4 factors were extracted and these factors explained 54.451% of the total variance. Conclusion: The instrument for assessing the severity of illness in high risk newborns developed in this study was identified as a tool with a high degree of reliability and validity. In this sense, this tool can be effectively utilized for assessing and implementing care for high risk newborns.

• 해양환경안전학회지
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• 제23권3호
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• pp.217-223
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• 2017

In order to assess risk as a basic step for securing safety, it requires to select risk factors and determine the frequency and the severity of the consequence of each risk factor. This research adopted common risk factors among well-known maritime risk assessment models, and proposed objective criteria to gauge the risk level of each risk factor. The starting points of risk evolution were chosen for criteria according to related studies and seafarers' experience. The rate of risk appearance over the criteria is named as the incidence of risk factor. Therefore, the total risk level is expressed as the combination of incidence of each risk factor and severity. This quantitative method would be applied to measuring and comparing the risk level of target maritime zones, and it would also be useful to survey which risk factor be focused for reducing the total risk of a certain maritime zone.

• 한국안전학회지
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• 제34권2호
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• pp.1-6
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• 2019

This study focuses on the evaluation of severity measures used for accidents associated with industrial machines and devices. In particular, duration of medical treatment, duration of work loss, number of deaths in an individual accident associated with industrial machines and devices are evaluated in various ways to assess the severity of the accident. The number of accidents with work loss of longer than 1 year as the severity measure and the number of accidents as the frequency measure appeared to be the most discriminating information and allow risk assessment based on these frequency and severity measures for grouping of industrial machines and devices. Results of such risk assessment further confirmed the re-classification of industrial machines and devices that are currently subject to safety certification (SC) and self-declaration of conformity (SDC) or selection of those machines and devices that are newly subject to SC and SDC.

• 한국안전학회지
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• 제31권1호
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• pp.1-6
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• 2016

Severity and frequency of industrial accidents are typically used to assess the "absolute" risk associated with the industrial machines and devices ("items") which are subject to safety certification or self-declaration of conformity. However, the "relative" risk associated with a particular item can further be assessed based on unit severity and unit frequency where the total number of item in use is taken into account. This study first attempts to estimate the total number of each item in use which was recently selected for safety certification or self-declaration of conformity. The appropriateness of such selection is recapitulated based on the relative risk involved. Analysis results indicate that depending on items, the relative risk is differentiated from the absolute risk. Recent selection of items for safety certification or self-declaration of conformity is then revisited for its validity. The relative risk based on unit severity and unit frequency of industrial accidents, together with the absolute risk, may be used to further categorize items for safety certification or self-declaration of conformity in the future.

• 한국산학기술학회논문지
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• 제19권6호
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• pp.567-574
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• 2018

위험 관리는 1) 체계개발 프로젝트의 비용, 일정 및 목표 성능 달성에 부정적인 영향을 줄 수 있는 위험 요소를 식별하고, 2) 식별된 각 위험 요소에 영향도와 발생 가능성을 부여하고 이를 바탕으로 식별 위험 요소를 관리하는 방법을 의미한다. 위험 요소를 사전에 식별하고 이에 대처함으로써 프로젝트의 비용 및 일정 관리와 목표 성능을 효과적으로 수행하고 달성할 수 있기 때문에 다양한 분야에서 위험 관리를 적용하고 있으며 이에 대한 많은 연구가 현재 진행되고 있다. 본 논문에서는 칼만 필터를 이용한 위험 요소 영향도 추정 방안을 제시한다. 위험 요소 영향도는 위험 발생 시의 손실 비용 및 일정을 변수로 갖는 식으로 표현된다고 가정하였다. 위험 요소 영향도의 참 값과 추정 값 사이의 오차를 줄이기 위한 방안으로서 선형 칼만 필터가 사용되었으며, 결과적으로 이를 통해 위험 관리 절차에 투입되는 자원을 절약할 수 있다. 제시된 위험 요소 영향도 추정 프로세스 검증은 시뮬레이션을 통해 수행되었다.

• 한국안전학회지
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• 제31권4호
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• pp.136-142
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• 2016

The FMEA is a widely used technique to pre-evaluate and avoid risks due to potential failures for developing an improved design. The conventional FMEA does not consider the possible time gap between occurrence and detection of failure cause. When a failure cause is detected and corrected before the failure itself occurs, there will be no other effect except the correction cost. But, if its cause is detected after the failure actually occurs, its effects will become more severe depending on the duration of the uncorrected failure. Taking this situation into account, a risk metric is developed as an alternative to the RPN of the conventional FMEA. The severity of a failure effect is first modeled as linear and quadratic severity functions of undetected failure time duration. Assuming exponential probability distribution for occurrence and detection time of failures and causes, the expected severity is derived for each failure cause. A new risk metric REM is defined as the product of a failure cause occurrence rate and the expected severity of its corresponding failure. A numerical example and some discussions are provided for illustration.

• Journal of Korean Neurosurgical Society
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• 제64권4호
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• pp.543-551
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• 2021

Objective : Hemorrhagic stroke (HS) and hypertensive retinopathy are known end organ damage of the brain and eye respectively, with HS having deleterious consequence to the patients. This study is to correlate between hypertensive retinopathy and HS in hypertensive disease. Methods : A control group of hypertensive patients only, and an investigated group of hypertensive HS patients. Fundoscopic examination to determine the grade of retinopathy was performed and then divided into low or high severity hypertensive retinopathy. Clinical and radiological parameter included are demography, vital signs, Glasgow coma scale (GCS) on admission, clot volume, site of clot, Intracerebral hemorrhage (ICH) score and Glasgow outcome scale (GOS). Data were correlated with the severity of hypertensive retinopathy. Results : Fifty patient in the control group and 51 patients in the investigated group were recruited. In the hypertensive HS group, 21 had low severity retinopathy (no or mild retinopathy) accounting for 41.2% and 30 patients had high severity (moderate or severe retinopathy). In the hypertensive patients 49 had low severity and one had high severity (p-value of 0.001). In HS group low severity showed better GCS score of 9-15 on admission (p-value of 0.003), clot volume less than 30 mL (p-value 0.001), and also a better 30 days mortality rate by using the ICH score (p-value 0.006), GOS score of 4 and 5 the low severity retinopathy fair better than the high severity retinopathy (p-value of 0.001), and the relative risk to develop HS in low severity and high severity retinopathy was 0.42 and 29.4, respectively. Conclusion : Hypertensive retinopathy screening could be used as an indicator in hypertensive patient, to evaluate the risk of developing hypertensive HS in the future.