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ETCS 차상장비 안전 확보를 위한 THR(Tolerable Hazard Rate) 할당 및 검증에 대한 연구
김효민(H. M. Kim),정경장(K. J. Jung),이종성(J. S. Lee) 한국도시철도학회 2014 한국도시철도학회논문집 Vol.2 No.3
The study describes safety analysis, which based on THR of ETCS standard, and result of investigation for securing safety of signaling system. The failure mostly occurs based on uncertainty and life time of system need to use probability theory for modeling and using concept of Random variable and characteristic of Distribution function. This study presents a procedure and equations to THR apportionment of total system failure for design and manufactures. And FTA method is applied and verified.
중·고등학교 여학생의 월경 전후기 불편감에 따른 월경태도 및 성 역할 고정관념의 관계
강슬기,김효민,박서희,백채영,심자영,우한빛,이빛나,이채은,홍지수 이화여자대학교 간호과학대학 2014 이화간호학회지 Vol.- No.48
Purpose: The purpose of this study was to provide the basis for program helping adolescent girls to form correct attitude toward menstruation and gender role stereotype by identifying the relationship among menstrual distress, attitudes toward menstruation and gender role stereotype. Method: The 392 participants of this study were selected among students of 5 middle schools and 3 high schools located in Seoul and Gyeong-gi province. Data were collected from 16 September to 23 September, 2013. The students were asked to answer the questionnaires consisting of MDQ(Menstrual Distress Questionnaire), KGES-A(Korean Gender Egalitarianism Scales for Adolescents), and menstrual attitude measurement scale developed by Min in 2003. Descriptive statistics, independent t-test and One way ANOVA were used to analyze the data with SPSS 21.0. Results: The results of this study were as follows: 1. High school students were more vulnerable to pre and post menstrual discomfort and tend to accept menstruation statically than middle school students(p=.009). 2. Students who did not receive regular sexuality education had private attitudes toward menstruation(p=.002), were emotionally more sensitive(p=.002) than the other group. 3. Students, who had higher menstrual discomfort, were more emotionally sensitive toward menstruation(p<.001), had variety of menstrual symptoms(p<.001), actively managing menstrual symptoms(p<.001), and accepted menstruation statically(p=.002) than the lower group. 4. There was no statistically significant relationship between gender role stereotype and pre and post menstrual discomfort. Conclusion: It was suggested that effective education program should be developed and implemented periodically in order to help adolescent school girls to understand pre and post menstrual discomfort and manage menstrual symptoms by themselves. Also, professional and systematic studies should follow up with larger population and more specific general characteristics.