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고승철(Ko Seung-Chul),김장환(Kim Jang-Hwan),이성노(Lee Seong-No) 한국체육과학회 2006 한국체육과학회지 Vol.15 No.3
This research has been carried out to subdivide the market of independent health clubs, figure out the characteristics of the respective subdivided markets and at the same time, contribute to the prevention of the loss of established members and to attracting new members by making appropriate marketing efforts to the selected target group. The deduced conclusions from data analysis are as follows: First, when the market fractionation by the service factor was conducted, it was subdivided into three different markets. Fraction 1 is the group of 'satisfied type with surroundings and human relations', which consists of married housewives in their 30's and 40's with bachelor's and higher degrees, and their subscription period for each enrollment was 3 months. Fraction 2 is the group of 'satisfied type with indoor atmosphere and programs', which consists of married housewives in their 20's with bachelor's degrees, and their subscription period for each enrollment was 3 months, but it showed longer enrollment rates by 6 months than other fraction markets. Fraction 3 is the biggest group of ' satisfied type with exercising facilities and fees', which consists of unmarried male university undergraduates and graduates in their 20's, and the subscription period for each enrollment was 3 months.
항공기 부품 신뢰도 분석평가체계 개발 및 운영개념 연구
손석희,고승철,Son, Seok-Hee,Ko, Seung-Chul 한국국방경영분석학회 2007 한국국방경영분석학회지 Vol.33 No.1
본 연구는 최적의 정비주기 산정을 위해 공군의 항공기 정비정보체계(AMMIS, Aircraft Maintenance Management Information System) 및 상태검사의 데이터 분석을 통하여 항공기 부품 신뢰도 분석평가체계를 개발하기 위한 개념설정 및 운영방안에 대한 내용이다. 항공기부품의 고장자료를 선별하여 추출한 후 신뢰도 소프트웨어를 활용해 정비주기를 개선하고 상태검사시 측정한 고장 추세를 통계 소프트웨어로 분석하여 검사 주기를 재설정하는 방법을 통해 항공기 부품 신뢰도 분석평가체계의 운영 모델을 제시한다. This study deals with developing and operating Reliability Analysis & Evaluation System for aircraft parts by analyzing ROKAF's AMMIS and phase inspection data for optimal inspection frequency. We suggest operating model with improving and adjusting inspection cycle by analyzing failure time data and tendency of crack with RELEX and Minitab software.