• Journal of Korean society of Dental Hygiene
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• v.21 no.3
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• pp.291-300
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• 2021

Objectives: This study aimed to develop human rights indicators through reliability and validity tests in order to measure the human rights situation of dental hygiene students who experience clinical practice at dental clincs. Methods: The basic framework of questions was constructed through literature review. Nine experts were tested for validity of the contents of the experts twice. The main survey was conducted on 121 students in the 3rd and 4th grade who were enrolled in the department of dental hygiene located in Seoul, Gyeonggi and Gangwon-do. Validity was tested through exploratory factor analysis, and reliability was tested through internal reliability coefficient and test-retest method. Results: The cronbach's α value was 0.734, and the Kappa coefficient was 0.584. The result of the reliability and validity test was composed of 11 questions and 3 factors. Conclusions: During the practice of a dental institution, the validity and reliability of the indicators that can grasp the human rights status of dental hygiene students were tested. It is expected that the indicators of this study will be provided an opportunity to understand the human rights situation of dental hygiene students and to improve problems such as human rights violations.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.69.3-69
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• 2002

The reliability of system is to become a important concern in developed industry. The controller based on the reliability is so important position. A reliable system is for system protection and human life by fault detection and control action against the transient condition of system. The aerospace system , nuclear reactor and chemical reactor are representative of a reliable system. This paper presents analysis of reliable system reliability, formal problem statement of optimal redundancy based on the reliability for a reliable system. And the problem is optimized by genetic algorithm. The genetic algorithms is useful algorithm in case of...

• Proceedings of the Korean Nuclear Society Conference
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• 2001.10a
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• pp.87.1-87
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• 2001

• Journal of the Korea Society of Computer and Information
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• v.11 no.6 s.44
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• pp.261-267
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• 2006

In order to perform a probabilistic safety assessment (PSA), it requires a large number of data for various fields. And the quality of a PSA results have become more important thing of the risk assessment. As part of enhancing the PSA qualify, Korea Atomic Energy Research Institute is developing a full power Human Reliability Analysis (HRA) calculator to manage human failure events (HFEs) and to calculate the diagnosis human error probabilities and execution human error probabilities. This paper introduces the development process and an overview of a standard HRA method for nuclear power plants. The study was carried out in three stages; 1) development of the procedures and rules for a standard HRA method. 2) design of a system structure, 3) development of the HRA calculator.

• International Journal of Reliability and Applications
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• v.11 no.2
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• pp.123-138
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• 2010

This paper investigates a mathematical model of a system composed of two non-identical unit parallel system with common-cause failure, critical human error, non-critical human error, preventive maintenance and two type of repair, i.e. cheaper and costlier. This system goes for preventive maintenance at random epochs. We assume that the failure, repair and maintenance times are independent random variables. The failure rates, repair rates and preventive maintenance rate are constant for each unit. The system is analyzed by using the graphical evaluation and review technique (GERT) to obtain various related measures and we study the effect of the preventive maintenance preventive maintenance on the system performance. Certain important results have been derived as special cases. The plots for the mean time to system failure and the steady-state availability A(${\infty}$) of the system are drawn for different parametric values.

• Proceedings of the ESK Conference
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• 1997.10a
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• pp.295-302
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• 1997

본 논문은 원자력발전소 사고관리 방안의 평가를 위하여인간 신뢰도 분석(Human Reliability Analysis: HRA)을 수행하고, 그 문제점을 보완하기 위하여 가능한 오류에 대한 정성적인 인적오류 분석(Human Error Analysis: HEA)과정을 추가하였다. 인적오류 분석의 기본 체계(framework)를 기법들을 검토하여 사고관리 방안 평가에서 인적오류의 가능성을 분석하는 절차와 대표적인 사례에 대한 분석 결과을 예시하였다.

• Journal of the Ergonomics Society of Korea
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• v.17 no.3
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• pp.117-126
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• 1998

Safety aspect in the manufacturing facility or at the construction site is increasingly emphasized in Korea for last a decade. As a result, the number of industrial accident is decreased slowly by improving the reliability of equipments and human performance through organizational efforts. This paper proposes a mathematical model to estimate and predict the human reliability level corresponding to the worker's job experience. For this purpose, we used the statistics of industrial accidents issued by the Department of Labor in the years of 94-96. The methodology developed in this research will provide a basis for better cost estimation in planning labor policy in the early stage of a project. We believe that this effort would eventually lead to a basis for a new approach to the safety planning.

• Korean Journal of Human Ecology
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• v.21 no.5
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• pp.819-835
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• 2012

The purpose of this study was to develop and test the validity of an assessment scale for determining the competency of early childhood teachers practicing unification education. For this purpose, an evaluation scale was constructed and then tested for reliability and validity. Participants for this study included 266 early childhood teachers in the unification education field. In order to the measure reliability and validity of this scale, Exploratory Factor Analysis and Confirmatory Factor Analysis were conducted with SPSS 18.0 and AMOS. The result of this study identified four principal factors: 1) Instruction skills, 2) Evaluation, 3) Attitude, and 4) Knowledge. The results of this study supported the scale's reliability and legitimacy as a valid instrument for the evaluation of early childhood teacher's competence in unification education.

• Journal of the Korean Society of Safety
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• v.16 no.4
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• pp.168-174
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• 2001

For human error analysis, the structure and situation of a task should be analyzed in advance. The paper introduces Structured Information Analysis (SIA) as a task analysis method for error analysis, and delineates the result of application on the emergency procedure of Korean Standard Nuclear Plants (KSNPs). From the task analysis about emergency procedure of KSNP, total 72 specific task goals were identified in the level of system function, and 86 generic tasks were classified from the viewpoint of physical sameness of the task description. Human errors are dependent on task types so that the result of task analysis would be used as a basis for the error analysis on the emergency tasks in nuclear power plants.

• Korean Journal of Human Ecology
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• v.8 no.1
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• pp.95-107
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• 1999

Difficulties in the measuring home food production activities obstructs development of home production activity related studies. For solving such problems, this study intended to develope a home food production frequency scale. The data were collected from 219 housewives in Taejon. Validity, reliability, correlation, and multiple regression analysis were used to test home food production frequency scale. The scale's validity and reliability were reveled considerable potential for its use to ascertain relationships between home food production activity and other family variables.