• Proceedings of the Korean Nuclear Society Conference
• /
• 1998.05a
• /
• pp.844-849
• /
• 1998

사고관리 방안의 타당성에 대한 면밀한 정토를 위하여 제안된 방안에 대한 운전원의 수행 가능성을 평가하는 과정이 있다. 수행 가능성의 평가에서 기존의 적용 사례와 인적 오류 분석 기법들을 검토하여 기존의 인간 신뢰도 분석 기법을 활용하는데 발생하는 여러가지 문제를 점토하고 새로운 기법의 요건과 방향을 제시하였다. 또한, 산업안전관리 분야에서 사용되고 있는 IAD(industrial Accident Dynamics)를 기반으로 인적오류의 가능성을 분석하는 절차를 제안하였다

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2002.05a
• /
• pp.231-236
• /
• 2002

급속한 산업의 발달에 따른 화학산업 시설의 공정 및 설비의 세분화는 대규모의 잠재 위험성을 증가시키며, 산업현장에서는 인간의 불안전한 행동 및 상태의 잠재위험으로 인한 중대재해 사고의 우려가 더 한층 증가하고 있다.(중략)

• Journal of Korean Institute of Industrial Engineers
• /
• v.13 no.2
• /
• pp.129-141
• /
• 1987

The possibility of human error in operation of nuclear power plant has been proved to be one of the most important factors for safety analysis. This study established the HRA methodology according to THERP steps for performing PRA(probabilistic risk assessment) of nuclear power plants and made two sample calculations : Availibility of auxiliary diesel generator, possibility of Davis-Bess #1 accident in 1985.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 1998.10a
• /
• pp.341-345
• /
• 1998

본 논문은 웨이블렛 변환과 제안된 신경회로망을 이용한 홍채인식에 대한 연구이다. 인간의 생물학적 특징중에 최근 각광받는 특징인 홍채로 신원확인 시스템을 구현함을 목적으로 고신뢰도의 홍채인식 시스템을 개발중이다. 현재 개발되고 있는 신원확인을 위한 여러 가지 인식 시스템 중 홍채인식의 특성과 비교 우위적 장점을 소개하고, 경쟁학습 신경회로망에서의 효과적인 가중치 초기화 방법과 승자결정 방법에 관한 연구에 대한 실험결과를 소개한다.

• Journal of the Korea Management Engineers Society
• /
• v.23 no.4
• /
• pp.159-164
• /
• 2018

Human-machine serial systems must be normal in both systems. Though the failure of machine is irreducible by itself, the human errors are of recurring type. When the human performance is described quantitatively, non-homogeneous Poisson Process model of human errors can be developed. And the model parameters can be estimated by maximum likelihood estimation and numerical analysis method. System reliability is obtained by multiplying machine reliability by human reliability.

• Journal of the Ergonomics Society of Korea
• /
• v.30 no.1
• /
• pp.55-64
• /
• 2011

Objective: The aim of this paper is to introduce the activities and research trends of human reliability analysis including brief summary about contents and methods of the analysis. Background: Various approaches and methods have been suggested and used to assess human reliability in field of risk assessment of nuclear power plants. However, it has noticed that there is high uncertainty in human reliability analysis which results in a major bottleneck for risk-informed activities of nuclear power plants. Method: First and second generation methods of human reliability analysis are reviewed and a few representative methods are discussed from the risk assessment perspective. The strength and weakness of each method is also examined from the viewpoint of reliability analyst as a user. In addition, new research trends in this field are briefly summarized. Results: Human reliability analysis has become an important tool to support not only risk assessment but also system design of a centralized complex system. Conclusion: Human reliability analysis should be improved by active cooperation with researchers in field of human factors. Application: The trends of human reliability analysis explained in this paper will help researchers to find interest topics to which they could contribute.

• Nuclear Engineering and Technology
• /
• v.23 no.2
• /
• pp.174-182
• /
• 1991

Effects of human error relevant to the periodic test are incorporated in the evaluations of the unavailability and optimal test interval of a safety system. Two types of possible human error with respect to the test and maintenance are considered. One is the possibility that a good safety system is inadvertently left in a bad state after test（Type A human error) and the other is the possibility that a bad safety system is undetected upon the test（Type B human error). An event tree model is developed for the steady-state unavailability of a safety system in order to determine the effects of human errors on the system unavailability and the optimal test interval. A reliability analysis of the Safety Injection System (SIS) was peformed to evaluate the effects of human error on the SIS unavailability. Results of various sensitivity analyses show that ; (1) the steady-state unavailability of the safety system increases as the probabilities of both types of human error increase and it is far more sensitive to Type A human error, (2) the optimal test interval increases slightly as the probability of Type A human error increases but it decreases as the probability of Type B human error increases, and (3) provided that the test interval of the safety injction pump is kept unchanged, the unavailability of SIS increases significantly as the probability of Type A human error increases but slightly as the probability of Type B human error increases. Therefore, to obtain the realistic result of reliability analysis, one should take shorter test interval (not optimal test interval) so that the unavailability of SIS can be maintained at the same level irrespective of human error. Since Type A human error during test & maintenance influeces greatly on the system unavailability, special efforts to reduce the possibility of Type A human error are essential in the course of test & maintenance.

• Journal of Korean Academy of Nursing
• /
• v.27 no.4
• /
• pp.871-879
• /
• 1997

인간은 사회적 접촉을 필요로 하고 타인과의 상호작용을 원하는 사회적 동물이다. 외로움은 한 개인의 사회적 관계의 망이 양적이나 질적으로 부족할 때 발생하는 불유쾌한 감정이다. 외로움은 매우 보편적인 감정이나 고통스러울 수 있으며 이러한 경험이 지속되면 정신적, 신체적 건강을 해칠 수 있을 뿐 아니라 자살을 초래하기도 한다. 특히 노인은 여러 가지 종류의 변화와 상실을 경험하기 때문에 외로움을 더 느낄 수 있다. 본 연구의 목적은 번역과 역번역 과정을 통해 Revised UCLA Loneliness Scale에 대한 한국어 UCLA 외로움 사정도구를 만들고 이 도구를 한국노인에게 적용하여 신뢰도와 타당도를 조사하는 것이다. 개정판UCLA외로움 사정 도구는 각각 3번씩의 번역과 역번역 과정을 통해 원본 영문도구와 역번역된 영문도구 사이에 의미의 차이가 없다고 판단될 때까지 만들어졌다. 번역과 역번역 과정은 미국에서 석사나 박사학위를 취득한 6명의 한국유학생들에 의해 이루어 졌으며 원본 영문도구와 역번역된 도구사이의 의미의 차이는 본 저자와 미국인 간호학 교수에 의해 사정되었다. 번역된 한국어 외로움 사정도구는 미국의 3개 주에 거주하는 203명의 한국노인들을 대상으로 신뢰도와 타당도 조사가 이루어졌다. 한국어 UCLA외로움 사정도구의 신뢰계수는 .93으로 한국어 도구의 내용이 전반적으로 동질성을 띈다는 것을 알 수 있었다. 이는 Barren등(1992)이 미국인 노인여성을 대상으로 한 연구에서 얻은 신뢰계수 .87보다 높은 것이었다. 한국어 도구의 구성타당도를 조사하기 위해 요인 분석을 실시한 결과 본 도구는 친밀한 주변인, 사회적 주변인, 및 소속감 등의 3개 요인을 가지는 것으로 분석되었다. 구성타당도에 대한 이러한 결과는 미국의 대학생들을 대상으로 한 Austin(1983)의 연구결과와 일치하는 것이었다. 각 요인에 대한 신뢰계수는 .88(제 1요인), .90(제 2요인), .84(제 3요인)로 나타났다. 전반적으로 대상자들은 한국어 도구에 대해 이해를 잘 하는 편이었으나 부정문인 4번 항목, '나는 혼자라고 느끼지 않는다'에 대해서는 응답을 할 때는 다른 항목에 비해 시간이 더 소요되거나 연구보조자에 의한 반복 설명이 필요하기도 하였다.

• Journal of Korean Academy of Nursing
• /
• v.45 no.3
• /
• pp.412-419
• /
• 2015

Purpose: The aim of this study was to evaluate the validity and reliability of the Korean version of the Person-centered Care Assessment Tool (P-CAT). Methods: The English P-CAT was translated into Korean with forward and backward translation. Survey data were collected from 458 staff in 17 long-term care facilities in Korea. Construct validity and criterion related validity were evaluated. Cronbach's alpha was used to assess reliability. Results: The Korean version of P-CAT was shown to be valid homogeneously by factor, item and content analysis. Internal consistency reliability was satisfactory in which the values of factor 1, factor 2 and the total scale were .84, .77 and .86 respectively. Exploratory factor analysis supported the construct validity with a two-factor solution. Factor loadings of the 13 items ranged in .34~.80. Criterion validity to the Person-centered Climate Questionnaire-staff (PCQ-S) was .74 (p<.001). Conclusion: The Korean version of the P-CAT was found to be an applicable instrument with satisfactory reliability and validity for further use in measuring successful person-centered care in long-term care facilities for older persons.

• The Journal of the Korea Contents Association
• /
• v.20 no.9
• /
• pp.577-588
• /
• 2020

The purpose of this study is to conduct the Korean translation and validity of the Unconditional Positive Self-Regard Scale(UPSR) that Patterson and Joseph(2006) originally developed based on the Rogerian person-centered theory. K-UPSR was adapted, modified and validated from the UPSR Scale. This study verified reliability and validity, and factor structure of K-UPSR. The preliminary study was proceeded with twelve adapted questions to 131 undergraduate and graduate students. As a result, three questions were deleted for the low reliability. The exploratory factor analysis of the nine questions showed two sub factors. The internal consistency reliability of nine questions with two sub factors was .89 in this study. The study was conducted by 419 male and female adults and verified confirmatory factor analysis and the validity. The study data was evaluated for the suitability of convergent and discriminant validity of K-UPSR. Through the correlation analysis of other five scales, the result was mostly corresponded to the preliminary study.