• The Korean Journal of Applied Statistics
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• v.25 no.3
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• pp.435-446
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• 2012

Epidemiologic studies frequently try to estimate the impact of a specific risk factor. The risk difference and the risk ratio are generally useful measurements for this purpose. When using such measurements for rare events, the standard approaches based on the normal approximation may fail, in particular when no events are observed. In this paper, we discuss and evaluate several existing methods to construct confidence intervals around risk differences and risk ratios using Monte-Carlo simulations when the disease of interest is rare. The results in this paper provide guidance how to construct interval estimates of the risk differences and the risk ratios when no events are detected.

• The Korean Journal of Community Living Science
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• v.27 no.1
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• pp.109-120
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• 2016

This study aims to observe the brand personality of foreign airlines and analyze which brand personality best influences service experience satisfaction, price-value satisfaction, and reusing intention. Moreover, it attempts to determine if there is a difference in service experience satisfaction, price-value satisfaction, and reusing intention according to brand personality. A questionnaire was distributed to 1621 consumers; of these, 1500 were used for final data analysis. Results are as follows. First, a factor analysis was used to investigate the brand personality, and three factors were identified: confidence/competence, sophistication, and dynamic. Second, we investigated the influences a brand personality has on service experience satisfaction, price-value satisfaction, and reusing intention. The confidence/competence of a brand personality showed the greatest influence on service experience satisfaction, price-value satisfaction, and reusing intention. Also, price sensitivity satisfaction had the greatest impact on reusing intentions.

• Journal of the Korea Society of Computer and Information
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• v.21 no.7
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• pp.93-100
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• 2016

This paper shows what kind of influence the learning motivation factors have on the effectiveness of Flipped Learning Model through the case of operating a JAVA programming subject. The Flipped Learning Approach consisting of Before Class, Before or At Start of Class, and In Class provides the students with learning motivation as well as satisfies Keller's ARCS(Attention, Relevance, Confidence, Satisfaction) to keep them studying steadily. This research conducts the operation of Flipped Learning and gets Exploratory Factor Analysis and Reliability Analysis from the result of the course experience questionnaire at the end of the class. Given this survey result, Flipped Learning approach improves the learners' satisfaction in class and the effectiveness in the fields of understanding learning context more than does the previous lecture-based learning approach by pacing learning procedure and conducting self-directed learning.

• Fashion & Textile Research Journal
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• v.11 no.2
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• pp.326-336
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• 2009

The primary purpose of this study was to investigate the relation between narcissistic and cosmetics shopping orientation of female consumers. The data were collected in Busan, Daegu and Ulsan, and 301 data were used for analysis. The aforementioned were analyzed utilizing frequency, factor and multiple regression analysis using SPSS Win 12.0. The results showed as follows. First, the factors related to narcissistic orientation were entitlement, leadership/superiority, self-reliance, self-intoxication, achievable desire and self-absorption. Second, the factors related to cosmetics shopping orientation were impulsive, economic, self-confidence, exploratory, brand/store loyal, shopping convenience, traffic convenience, prudence, pleasure, famous brand inclination and independent. Third, narcissistic orientation and cosmetics shopping orientation were significantly differences impulsive, economic, self-confidence, exploratory, shopping convenience, pleasure and famous brand inclination orientation.

• Fashion & Textile Research Journal
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• v.12 no.5
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• pp.599-607
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• 2010

This study analyzed how the self-efficacy and commitment on functional satisfaction and repurchase intentionof mountaineering apparels. The survey was conducted over the climbers with 298 subjects. The statistical analysis methods were frequency analysis, factor analysis, reliability analysis, and regression analysis. The results showed that the self-efficacy of climbers were classified into self-regulated efficacy, self-confidence, and task difficulty preference, and the commitment of climbers were classified into behavioral commitment and cognitive commitment. The self-regulated efficacy and self-confidence influenced the behavioral commitment and the self-regulated efficacy influenced the cognitive commitment. The behavioral commitment and cognitive commitment influenced the functional satisfaction and repurchase intention of mountaineering apparels. The functional satisfaction influenced the repurchase intention of mountaineering apparels.

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.8
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• pp.1119-1130
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• 1999

The purpose of this was to investigate the differences in recognition of brand and advertisement image according to the life style segments of adolescents. The subjects selected for the final analysis were 613 female high school students whoe were residents in Seoul Pusan and Taejeon. The statistics used for data analysis were factor analysis one-way ANOVA Duncan's multiple range test paired t-test frequency distribution and percentage by the SPSS program The results of this study were as follows : 1. The life style of adolescents wee classified into five groups : Sports Uninterest group Friend Preference/Fashion Uninterest group Sports Preference/Home Oriented group Fashion Interest group and Confidence group. 2, The brand image and advertisement image recognition didn's correspond in general 3. The brand image and advertisement image recognition were significantly different among five groups of life style. The Confidence group and Friend Preference/ Fashion Uninterest group recognized brand image and advertisement image lower than the other groups.

• Journal of the Korean Society of School Health
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• v.1 no.2
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• pp.34-49
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• 1988

The purpose of this study is to identify the status of school health and analyze affecting factors of school nurses' self confidence and nursing activities of the secondary school in Seoul. The data was collected from 13th of August to 30th of October. The self reported questionairs were distributed during one of the school nurses seminars held in Seoul and 93 secondary school nurses answered. Analysis of the data was done utilizing SPSS for percentage, mean, T-test ANOVA and Pearson Correlation Coefficients. The results of study are summerized as follows; 1. General Characteristics The mean age of the subjects was 33.4 and mean length of experience as a school nurse was 7.3 years. 79.5 percent of them had clinical experiences and the mean clinic experience was 2.1 years. The majority of them were graduate of the baccalaureate nursing programs and 82.8 percent of them were married. 72.0 percent of the sample had religion, and 60.2 percent of them were in the national or public schools. 90.3 percent of them had independent duty. 2. The status of school health resources In average, there were 2,445 students, 37 classes and 63 teachers per school nurse. 48.4 percent of them were aware of the school budget. The budget for school health was 585,000 won per school in average. 30.0 percent of the schools had school health organization. The schools whose health clinics were on the first floor consisted of 79.3 percent, among them 42.9 percent were on the center of the building office. 3. Activities of school health nursing The average number of students using health clinic were 430 per month. The majority of the problem was digestive problem. There were 7.5 times of mean correspondences with parents per year. The activities of the school nurses were clinic management (29.0%), health care services (23.5%) and health education (14.1%). 4. The degrees of self confidence of the school nurse and nursing activities Self confidence measured by 6 items of self-reported questionaires scored by 4 point Likert Scale revealed. The nurses' self-confidence was 2.922 in clinic management, 2.909 in health education, 2.759 in program planning and evaluation, 2.757 in health care services, 2.692 in management of school environment, and 2.250 in operation of school health organization. The nursing activities scored by 2 point. The nursing activities was 1,870 in program planning and evaluation, 1.853 in health education, 1.843 in clinic management, 1.739 in health care services, 1.696 in management of school environment and 1.265 in operating of school health organization. 5. Factors affecting self confidence and nursing activities of school nurses The general characteristics of the school nurses and the school health resources were related to self confidence and nursing activities. The most significant variable to nurses' self confidence was type of the school ownership and the presence of school health organization was the most significant factor to nursing activities.

• Journal of Korean Home Economics Education Association
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• v.29 no.4
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• pp.101-116
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• 2017

This study aimed to investigate the determinants of confidence in courtship and marriage, childbirth and parenting of the unmarried employed of the echo boomers born between 1982-1992, using data from the 19th wave of the nationwide Korea Labor and Income Panel Study. The differences of confidence in courtship, marriage, childbirth, and parenting of the echo boomers according to sociodemographic variables, psychosocial variables, workplace related variables were examined and multiple regression analysis was conducted in order to identify the factors that affect the confidence in courtship and marriage, childbirth and parenting. The results were as follows: The level of confidence in courtship and marriage, childbirth and parenting showed a statistically significant difference depending upon socioeconomic status and psychosocial variables. However, among the workplace related variables, other than childbirth and parenting within the job satisfaction category, all other variables showed a statistically significant difference. In addition, as the determining factors affecting all issues of courtship, marriage, childbirth, and parenting, youth perceptions of Korean society revealed to be the most influential factor, followed by social support and organizational commitment.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.565-577
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• 2012

Various factors affecting teachers' self-confidence exist in math class using technology such as graphic calculators. For example, internal factors such as teachers' attitude and external factors such as school administrators or colleague's support can be considered. Pedagogical Technology Knowledge(PTK) is the very important factor which determines teacher's self-confidence in educational technology, and the development of PTK is composed of teacher's perception on the technology and its application and instrumentation. This study investigated 19 pre-service and current middle and high school teachers in the respect of their change of self-confidence, attitude, expertise on pedagogical technology, and quality of math class. These are anlayzed with the concept of instrumentation and instrumentalization through various experiences like graphic calculator, GPS and AutoGraph. The result indicated that constraints or obstacles did not affect much if teachers' attitude and self-confidence were strong. Particularly teachers' firm will to learn about technology and their confidence on its value are the critical factors in using technology for mathematics class.

• Corrosion Science and Technology
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• v.4 no.4
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• pp.155-163
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• 2005

Heavy duty coating are required to have minimum durable period of 15 years under average usage environment because these paints are coated with purpose of anti-corrosion, antifouling, plastering etc. Onto steel structures constructed upon land and sea and other ferrous structures of electric power generation plants, electricity transmission towers, large structures of various plants, etc. Therefore we tried to estimate heavy duty coating longevity through reliability evaluation method and used combined cyclic anti-conrrosion test method composed of drying, moisturizing and salt spray as for accelerated life test to estimate longevity. Accelerated life test hours to heavy duty coating of first grade (with longevity not less than 15 years) specification may be obtained from troubleless test hours $t_n=\frac{B_p}{n^{1/\beta}}\left[\frac{1n(1-CL)}{1n(1-p)} \right]^{1/\beta}=19.671$ (yr) where shape parameter $\beta=1.1$, confidence level CL=80 %, warranty life $B_{10}=15$ yr and sampling size n=10 (2 sets). Because acceleration factor {AF} found by accelerated test is 41.7, accelerated life test hours required may be represented about 4,132 hr so that if this amount of hours is converted to number of cycles(6 hr/cycle) of complex cycle corrosion resistance test then the amount is tantamount about 690 cycles. That means if there does not occur trouble failure (with defect factor sum not more than 20) during when there is performed 690 cycles of combined cyclic anti-corrosion test to heavy duty coating specimen then it signifies that there can be warranted longevity $B_{10}$ of 15 yr under condition of confidence level CL=80 %.