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짝수 고조파를 이용한 이차아크 소호 검출 방법에 관한 연구
이철문(Chul-Moon Lee),이유진(You-Jin Lee),여상민(Sang-Min Yeo),김철환(Chul-Hwan Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
지락고장 발생 시 재폐로 동작을 위하여 필요한 조건은 이차아크의 소호 여부이다. 본 논문에서는 1선 지락고장 발생 시 고장상의 전압 파형에 포함되는 짝수 고조파가 이차아크 소호 판단에 유용한지 분석해 보았다. 모의실험은 765㎸ 모의계통에 아크 지락고장 모델을 적용하여, 다양한 고장 조건하에 이루어졌다.
테니스 참여 액티브시니어의 여가태도와 삶의 질의 관계 분석: 스트레스 관련 성장의 매개 효과를 중심으로
이민석(Lee, Min-Seok),김민정(Kim, Min-Jeong),이철원(Lee, Chul-Won) 한국여가레크리에이션학회 2020 한국여가레크리에이션학회지 Vol.44 No.2
The goal of this study was to identify the relations between leisure attitude, stress-related growth and quality of life of active seniors who participating in tennis.. A total of 232 questionnaires were collected. The collected data were analyzed and interpreted by SPSS 24 and AMOS 22.0. Frequency analysis, confirmatory factor analysis, validity test, correlation analysis and structural equation model analysis were performed by using a .05 significance level. The conclusions drawn from conducting the study were as follows. First, active senior’s leisure attitude and stress-related growth had a significant relationship. Second, active senior’s stress-related growth had a significant effect on active senior’s quality of life. Third, active senior’s leisure attitude and quality of life were significantly related. Fourth, it was confirmed that stress-related growth plays a role as a mediator between leisure attitude and quality of life.
확장된 기술수용모델(TAM)을 적용한 대학생들의 레저시설 앱 사용의도 분석 : 정보품질을 중심으로
이민석(Lee, Min-Seok),조민근(Cho, Min-Geun),이철원(Lee, Chul-Won) 한국체육과학회 2020 한국체육과학회지 Vol.29 No.1
The purpose of this study was to investigate university students leisure facility apps by using theory of technology acceptance model with focusing on information quality. In oder to achieve the purpose of this study, 335 questionnaires were surveyed. Frequency analysis, correlation analysis, confirmatory factor analysis and structural equation model analysis were conducted by using SPSS 24 and AMOS 20. The results of this study are as follows. First, leisure facility apps’ information quality had a significant effect on perceived usefulness, perceived ease of use and using intention. Second, perceived usefulness had effects on using intention. Third, perceived ease of use did not have significant effect on using intention. Fourth, the perceived ease of use of leisure facility applications had effects on perceived usefulness. In conclusion, information quality is important factor to increase university students’ intention to use leisure facility apps.