• Title/Summary/Keyword: Reliability management

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Validity and Reliability of Korean Version of the Family Management Measure (Korean FaMM) for Families with Children having Chronic Illness (만성질환 아동 가족의 한국어판 가족관리 측정도구(Family Management Measure [FaMM])의 타당도와 신뢰도)

  • Kim, Dong Hee;Im, Yeo Jin
    • Journal of Korean Academy of Nursing
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    • v.43 no.1
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    • pp.123-132
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    • 2013
  • Purpose: To develop and test the validity and reliability of the Korean version of the Family Management Measure (Korean FaMM) to assess applicability for families with children having chronic illnesses. Methods: The Korean FaMM was articulated through forward-backward translation methods. Internal consistency reliability, construct and criterion validity were calculated using PASW WIN (19.0) and AMOS (20.0). Survey data were collected from 341 mothers of children suffering from chronic disease enrolled in a university hospital in Seoul, South Korea. Results: The Korean version of FaMM showed reliable internal consistency with Cronbach's alpha for the total scale of .69-.91. Factor loadings of the 53 items on the six sub-scales ranged from 0.28-0.84. The model of six subscales for the Korean FaMM was validated by expiratory and confirmatory factor analysis (${\chi}^2$ <.001, RMR<.05, GFI, AGFI, NFI, NNFI>.08). Criterion validity compared to the Parental Stress Index (PSI) showed significant correlation. Conclusion: The findings of this study demonstrate that the Korean FaMM showed satisfactory construct and criterion validity and reliability. It is useful to measure Korean family's management style with their children who have a chronic illness.

Development of Web-based Design Review System for Reliability and Safety Knowledge Management

  • Otsuka, Yuichi;Yukawa, Takashi;Mutoh, Yoshiharu
    • International Journal of Safety
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    • v.9 no.2
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    • pp.22-28
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    • 2010
  • This paper describes a web-based design review system as a knowledge management system relating reliability and safety system design. Since people's consciousness for safety and security become sensitive and increases the need of establishing a proactive prevention method for internal failures and relating risks in products. It also means that prevailing tacit knowledge in retired workers, in order to transform them to be easily used to support new system development, become more important. When considering safety and reliability design, at least two data sheet are necessary; Failure Modes and Effects Analyses (FMEA) and Risk Assessment (RA). These two data are practically made separately. However, it includes the concerns that a risk by failures during long-term use may not be noticed. To overcome this insufficiency, a support tool for integrating reliability evaluation and risk assessment data simultaneously is expected to be revealed. The authors have then developed a web-based design review system for reliability and safety system design. The system include various profitable functions; making FMEA and RA sheet, retrieving past data sheet for engineering change management and new product development and web-based discussion to increase the efficiency of discussion. The system is applied to one practical development works in order to demonstrate its effectiveness that is to be made clear by interviewing user's qualitative comment.

Development of Priority Calculation Models for Enacting and Revising the Korea Defense Standards and Specifications (국방표준 및 규격의 제·개정 우선순위 산출을 위한 모형 개발)

  • Sung, Si-Il;Kim, Hyeunggeun;Kim, Yong Soo;Bae, Sukjoo;Kim, Jun-Su;Kim, Jong-Man
    • Journal of Korean Society for Quality Management
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    • v.44 no.1
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    • pp.109-120
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    • 2016
  • Purpose: This study developed a method of determining priorities for evaluating and revising defense standards. Methods: The proposed data integration and refinement methods are used to obtain component reliability information and to determine the frequency of component citation based on Pareto analysis. Based on the reliability information and the frequency of cited components, the target components for quality improvement can be determined and improved using various methods, such as engineering changes, special meetings, additional training, and revising the maintenance manual. Results: Based on the proposed process, we identified components that need to be improved in order to enhance the quality and reliability. Conclusion: Our process will improve the quality and reliability of weapon systems. The proposed process can be adopted for various weapon systems to enhance their quality and reliability, and to reduce military spending.

Quality Criteria for Measuring Authenticity, Reliability, Integrity and Usability of Records (기록의 품질 기준 분석 - 진본성, 신뢰성, 무결성, 가용성을 중심으로 -)

  • Seol, Moon-Won
    • The Korean Journal of Archival Studies
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    • no.11
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    • pp.41-89
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    • 2005
  • Good records management is essential for good governance in modern democratic society. Though the records management institutions and policies in Korea were improved rapidly since the enactment of Public Records Management Act in 1999, the newly introduced records systems for administrative organizations including the New Electronic Data Management System(NEDMS) and Electronic Records Management Systems for Records Centers(ERMS/RC) have many problems in terms of ensuring the quality of records. The purpose of this study aimed to suggest quality criteria for measuring authenticity, reliability, integrity and usability of electronic records based on the international standards and guidelines such as ISO 15489, InterPARES project and BS ISO 15489 guidelines. The present study began with defining concepts and structure of records as evidence of activities. And it analysed four characteristics such as authenticity, reliability, integrity and usability of records by comparing various definitions in diplomatics and archival science literatures, and some projects reports. Finally it suggested the quality criteria for measuring authenticity, reliability, integrity and usability of records, and methods for maintaining them in each process of creation, maintenance and preservation.

Reliability Analysis of Multistate Systems with Multistate Components (다항상태 부품으로 구성된 다항상태 시스템의 신뢰도 분석에 관한 연구)

  • Lee, Chong-Hyung
    • Journal of Korean Society for Quality Management
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    • v.35 no.2
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    • pp.99-105
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    • 2007
  • Most of systems used in real fields are considered as multistate systems with multistate components. As one of methods for performance evaluation of the system, reliability analysis has been popularly used. In this paper, we propose an improved reliability analysis method which is based on state space decomposition method of Aven (1985). In deriving upper bounds, our method uses sets of unspecified states whereas Aven (1985) excludes sets of unacceptance states. Also, closer lower bounds to an exact reliability are obtained by considering of importance of min-path vectors.

Reliability Assessment Methods for Electronic Component Removed Environmental Materials (환경물질을 제외한 전자부품의 신뢰성평가 방법 연구)

  • Lee, Jong-Boem;Cho, Jai-Rip
    • Proceedings of the Safety Management and Science Conference
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    • 2007.11a
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    • pp.275-298
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    • 2007
  • Recently, all kind of 21C-typed electronic goods show the tendency of hightechnology and digital convergence rapidly. Also, failure mechanism which differs from original goods concept presents. Today, failure mechanism which differs from one that was happened by restricted harmful environment material before adapted the raw of environment material is changing the paradigm of reliability engineering. Thus, when applied the environment matter of original and secondary material at the electronic goods were removed, reliability assessment method and prediction stay into low level. This study suggests as solution to overcome these phenomenon. The study on the management method of environmental restriction substances which is recognized as important element in the reliability assessment about environment material of electronic goods and the study on reliability assessment method of PWB without environment material are progressed.

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Development of the Preventive Maintenance System for an Urban Transit (도시철도 차량을 위한 예방보전시스템 개발)

  • Ha, Seong-Hoon;Chang, Suk-Hwa;Yoo, Woo-Sik
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.30 no.1
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    • pp.1-7
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    • 2007
  • This paper addresses a the maintenance system based on the concept of RAMS (Reliability, Availability, Maintenance, Safety) for the effective maintenance of the urban transit. A systematic approach for developing a cost-effective maintenance strategy based on the component reliability of the system in question is performed according to the following steps : definition of function, functional failures of the systems, construction of RBD (Reliability Block Diagram), and the calculation of reliability indices. The developed preventive maintenance system generates maintenance plan and repair request based on the analysed RAMS data of components and maintenance experience.

Use of Dynamic Reliability Method in Assessing Accident Management Strategy

  • Jae, Moosung
    • International Journal of Reliability and Applications
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    • v.2 no.1
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    • pp.27-36
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    • 2001
  • This Paper proposes a new methodology for assessing the reliability of an accident management, which Is based on the reliability physics and the scheme to generate dynamic event tree. The methodology consists of 3 main steps: screening; uncertainty propagation; and probability estimation. Sensitivity analysis is used for screening the variables of significance. Latin Hypercube sampling technique and MAAP code are used for uncertainty propagation, and the dynamic event tree generation method is used for the estimation of non-success probability of implementing an accident management strategy. This approach is applied in assessing the non-success probability of implementing a cavity flooding strategy, which is to supply water into the reactor cavity using emergency fire systems during the sequence of station blackout at the reference plant.

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-Development of Web-based Reliability Information Supporting System- (웹기반의 신뢰성정보 지원시스템의 개발)

  • 김연수;정영배
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.23 no.54
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    • pp.145-153
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    • 2000
  • The importance of reliability information management for an effective product quality management has been increased. Reliability management requires many different kinds of human and technical expertise and cost over the various discipline in the organization. However, it is difficult task to set up appropriate and effective life data analysis because of lacking engineers with reliability knowledge, statistical background and of funds in small and medium-sized enterprise. It is needed to develop a low cost implementation architecture of reliability information supporting system for small and medium-sized enterprise under web environment. In this paper, research efforts are presented to solve such problems of small and medium-sized enterprise under web environment.

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Application of Conjugate Distribution using Deductive and Inductive Reasoning in Quality and Reliability Tools (품질 및 신뢰성 기법에서 연역 및 귀납 추론에 의한 Conjugate 분포의 적용)

  • Choi, Sung-Woon
    • Proceedings of the Safety Management and Science Conference
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    • 2010.11a
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    • pp.27-33
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    • 2010
  • The paper proposes the guidelines of application and interpretation for quality and reliability methodologies using deductive or inductive reasoning. The research also reviews Bayesian quality and reliability tools by deductive prior function and inductive posterior function.

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