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정승우,정영배 한국산업경영시스템학회 2017 한국산업경영시스템학회지 Vol.40 No.4
A one-shot system (device) refers to a system that is stored for a long period of time and is then disposed of after a single mission because it is accompanied by a chemical reaction or physical destruction when it operates, such as shells, munitions in a defense weapon system and automobile airbags. Because these systems are primarily related with safety and life, it is required to maintain a high level of storage reliability. Storage reliability is the probability that the system will operate at a particular point in time after storage. Since the stored one-shot system can be confirmed only through inspection, periodic inspection and maintenance should be performed to maintain a high level of storage reliability. Since the one-shot system is characterized by a large loss in the event of a failure, it is necessary to determine an appropriate inspection period to maintain the storage reliability above the reliability goal. In this study, we propose an optimal inspection policy that minimizes the total cost while exceeding the reliability goal that the storage reliability is set in advance for the one-shot system in which periodic inspections are performed. We assume that the failure time is the Weibull distribution. And the cost model is presented considering the existing storage reliability model by Martinez and Kim et al. The cost components to be included in the cost model are the cost of inspection c1, the cost of loss per unit time between failure and detection c2, the cost of minimum repair of the detected breakdown of units c3, and the overhaul cost c4 of Rs ≤ Rg. And in this paper, we will determine the optimal inspection policy to find the inspection period and number of tests that minimize the expected cost per unit time from the finite lifetime to the overhaul. Compare them through numerical examples.
생활체육 참여자의 스포츠용품 브랜드 증거와 브랜드 신뢰, 브랜드 충성도의 관계
정승우 한국스포츠학회 2019 한국스포츠학회지 Vol.17 No.4
이 연구는 생활체육 참여자의 스포츠용품 브랜드 증거와 브랜드 신뢰, 브랜드 충성도의 관계를 알아보는데 목적이 있으며, 서울과 경기도 지역 생활체육 참여자를 대상으로 편의표본추출법을 이용하여 362명의 자료를 사용하였다. 자료처리는 SPSS 21.0 프로그램과 AMOS 21.0 프로그램을 이용하여 빈도분석, 확인적 요인분석, 신뢰도 분석, 상관분석, 구조방정식 모형분석을 실시하였다. 이상과 같은 연구결과 및 논의를 바탕으로 다음과 같은 결론을 얻었다. 첫째, 스포츠용품 브랜드 증거와 브랜드 신뢰의 관계를 분석한 결과 브랜드 증거는 브랜드 신뢰에 유의한 영향을 미치며, 브랜드 증거는 브랜드 신뢰를 높이는 매우 중요한 변수임을 연구결과를 통해 확인할 수 있었다. 둘째, 스포츠용품 브랜드 증거와 브랜드 충성도의 관계를 분석한 결과 브랜드 증거는 브랜드 충성도에 유의한 영향을 미치며, 브랜드 증거는 브랜드 충성도를 높이는 매우 중요한 변수임을 연구결과를 통해 확인할 수 있었다. 셋째, 스포츠용품 브랜드 신뢰와 브랜드 충성도의 관계를 분석한 결과 브랜드 신뢰는 브랜드 충성도에 유의한 영향을 미치며, 브랜드 신뢰는 브랜드 충성도를 높이는 매우 중요한 변수임을 연구결과를 통해 확인할 수 있었다. The purpose of this study is to investigate the relationship among sports goods brand evidence of sports participants, brand trust, and brand loyalty. The data of 362 people were used for sports participants in Seoul and Gyeonggi province by convenience sampling method. Data were analyzed using frequency analysis, factor analysis, reliability analysis, correlation analysis, and structural equation modeling using SPSS 21.0 program and AMOS 21.0 program. Based on the results and discussions, the following conclusions were obtained. First, the analysis of the relationship between brand evidence of sports goods and brand trust that the brand evidence has a significant effect on the positive brand trust, and the brand evidence is a very important variable to raise the positive brand trust. Second, as a result of analyzing the relationship between brand evidence of sports goods and brand loyalty that the brand evidence has a significant influence on the brand loyalty and the brand evidence is a very important variable to enhance the brand loyalty. Third, as a result of analyzing the relationship between brand trust of sports goods and brand loyalty, brand trust has a significant effect on brand loyalty, and brand trust is a very important variable to enhance brand loyalty.