• The KSFM Journal of Fluid Machinery
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• v.11 no.1
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• pp.46-51
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• 2008

A stability analysis has been made for a newly designed gate of intake tower of reservoir. The analysis is composed of finding the natural frequency of the gate and the frequency induced by water flowing over and through the gate. ANSYS is employed to calculate the natural frequency of the gate and SC/Tetra is utilized for calculating flow field around the gate, which in turn gives the frequency of pressure force fluctuation on the gate. In addition to the safety analysis, the present study presents how the gate selectively intakes a muddy water layer located in the middle depth of reservoir.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2013.11a
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• pp.8-11
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• 2013

We implement the foveation and frequency sensitivity feature of human visual system in discrete cosine transform (DCT) domain. Resolution of human visual perception decays as distance from the eye-focused point, known as foveation property, and the middle frequency components give most pleasant image quality to human than the low and high frequency components, which is the frequency sensitivity property of human visual system. For satisfying the foveation property, we enhanced the local contrast at the focused regions and smoothed local contrast at the non-focused regions in the DCT domain without bringing the blocking and ringing artifacts. Moreover, the energies at each DCT frequency components is modified with various degree to fulfill the frequency sensitivity property. The proposed method is verified by the subjective and objective evaluations that it can the improve the human perceptual visual quality.

• Journal of the Korean Home Economics Association
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• v.44 no.11
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• pp.43-50
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• 2006

The purpose of this study is to analyze the use and satisfaction on cosmetics of middle- and old-aged women with well-being pursuit disposition. A survey was conducted from January 20 to February 10 in 2006. The statistical analysis methods used to analyze the 393 middle- and old- aged female subjects were frequency analysis, reliability analysis, factor analysis, cluster analysis, crosstab, and multiple regression analysis. First, middle- and old-aged women were using functional cosmetics for wrinkle and whitening as well as skin lotion, moisture lotion and nutritive cream. They applied basic skin make-up only or partial make-up on the eyes and lips. Second, the well-being pursuit disposition factors were determined to be eco-friendly pursuit disposition, economical pursuit disposition, and health pursuit disposition. The well-being pursuit disposition factors had an effect on satisfaction of basic cosmetics. While the economical pursuit disposition factor had an effect on satisfaction of colored cosmetics. Third, the clusters from well-being pursuit disposition were determined to be wellbeing unconcerned group, eco-friendly concerned group, economical concerned group, and health concerned group. The proportion of subjects applying basic and colored cosmetics was high in health concerned group.

• The Journal of Korean Society for School & Community Health Education
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• v.13 no.3
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• pp.43-56
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• 2012

Objectives: The main purpose of this study was to examine factors influencing depression of middle school students in relation to coping behavior, social support, and self-esteem. Methods: The questionnaire survey was carried out on a convenience sample of 442 middle school students. The data analysis procedure included frequency, t-test, ANOVA, Pearson correlation coefficients, and stepwise multiple regression using depression as the dependent variable. Results: The prevalence of depression was 16.7%. Multiple regression revealed that the factors such as "negative" coping(${\beta}$=.29, p<.001), friend support(${\beta}$=-.23, p<.001), "social support pursuing" coping(${\beta}$=-.22, p<.001), school record(${\beta}$=.15, p<.001), self-esteem(${\beta}$=-.13, p<.01), family support(${\beta}$=-.13, p<.01), "agressive" coping(${\beta}$=.11, p<.01) turned out to be significant affecting factors. Forty six percent of varience in depression was explained by these factors. Conclusion: The results of this study suggest that to prevent the occurrence of depression, psychosocial aspects including emotional support should be considered when developing mental health education program for middle school students.

• Journal of the Korean Society of Clothing and Textiles
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• v.42 no.4
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• pp.657-670
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• 2018

This study investigated the wearing of jackets by down-aging middle-aged women in their 40s to 50s who enjoy wearing attire from ladies' apparel brands that target the 20s to 30s age group. As a method of research, a survey was done on middle-aged women in their 40s and 50s as the target age group. Based on the survey results, comparison and analysis was done on the wearing of jackets as well as preferred extra space and fitness of the clothes, with the distinction between the down-aging group and the non down-aging group. The down-aging middle-aged women purchased jackets mainly at department stores, outlets, discount outlets, and internet shopping malls, and showed the highest frequency of wearing the jackets once or twice a week. For the item "importance in selecting a jacket", both groups chose "the design" as the most important aspect; however, the non down-aging group took "size and fitness" and "activity and comfort" more than the down-aging group. Especially regarding the size of the jackets, size S (55) was the most often worn by the down-aging group, whereas size M (66) was the most often worn by the non down-aging group.

• Fashion & Textile Research Journal
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• v.17 no.5
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• pp.815-827
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• 2015

This study analyzes the characteristics by age and type for middle aged and elderly women foot shapes aged 40-69 years. ANOVA, factor, and cluster analyzed middle aged and elderly women's foot shapes. The results of the study are as follows. First, higher age groups tended to have smaller foot lengths, ball/instep circumferences, circumferences, and ball heights with larger heel height values and higher degrees of gathering of toe 1 and toe 5 toward the feet reference axis. Second, foot lengths were 220 mm-240 mm and the ball circumference's size symbol in high frequency sections were distributed from E to EEEE in the 40s and 60s groups and from D to EEEE in the 50s group. Third, eight factors were extracted through the factor analyses of middle aged and elderly women's foot measurement items. Fourth, a cluster analyses classified the subjects into four types. Type 1 is a normal foot type with medium foot length and small ball circumference and type 2 is a long and flat foot type with a type with large foot length and ball circumference values as well as small ball height values. Type 3 is a thick foot type with a medium foot length, large ball circumference, large ball height and type 4 is a toe deformation foot type with medium foot length, small ball circumference, and a high degree of toe gathering toward the center.

• Korean Journal of Health Education and Promotion
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• v.28 no.4
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• pp.51-61
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• 2011

Objectives: The main purpose of this study was to examine factors associated with depression of middle school students in relation to self-esteem, type A behavior pattern, and locus of control. Methods: A survey was administered to a convenience sample of 309 middle school students. The data analysis procedure included frequency distribution, t-test, ANOVA, Pearson correlation coefficients, and stepwise multiple regression using depression as the dependent variable. Results: The prevalence of depression was 27.2%. Stepwise multiple regression revealed that the factors such as self-esteem(${\beta}$=0.422, p<0.001), type A behavior pattern(${\beta}$=0.166, p<0.001), and locus of control(${\beta}$=-0.165, p<0.001) turned out to be significant affecting factors. Forty nine percent of variance in depression was explained by these factors(40% of variance by self-esteem). Conclusions: The findings suggest that personal internalizing variables should be considered when developing mental health education program to prevent the occurrence of depression for middle school students.

• Journal of the Korea Fashion and Costume Design Association
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• v.6 no.2
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• pp.21-33
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• 2004

The purpose of this study was to provide information on how to improve both the satisfaction and the current sizing system for the school uniform focused on middle and high school girls' students. For the satisfaction of their school uniform, there were statistical significance by the academic year in jacket design, blouse color, and skirt design in the case of middle school girls'. On the other hand, high school girls' evaluation of school uniform was significantly different in jacket color, jacket design, blouse color, textile of blouse, skirt color, and skirt design by the academic year. For the assessment of wearing motion, there was no significant difference by the grade in both middle school and high school girls'. However, it was shown more frequency of discomfort than that of comfort. For the evaluation of sizing fitness, the breadth of sleeve in jacket and the width of blouse were statistical significance in middle school girls' by the grade while the width of jacket, he breadth of sleeve in jacket, the length of blouse, the width of blouse and length of sleeve in blouse were different in high school students by the grade.

• Journal of the Korean Society of Food Culture
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• v.17 no.1
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• pp.1-15
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• 2002

This research aimed to find out menu preference for middle school students and was conducted in a form of questionnaire sampled form middle school students in 10 schools where the meal program under commission was operating in Seoul. The questionnaire was distributed from Dec. 1 to 20, 2000 and gathered menu preference of staple, soup or stew, side dishes and dessert by each meal, season, gender. Statistical data analysis was completea using the SAS package, such as average and standard deviation, frequency analysis and T-test. The results can be summarized as follows : Most of the schools provided rice for lunch, while the students preferred noodles, mandu and bread. Most of students preferd beef rib soup. Gimchi stew with clear soup was favored for breakfast and stews for lunch and dinner. Side dishes were more favored by female students, in which shows the differences between male and female students. Students preferred dessert the most with fruits(4.49). It is required that the quality of school meals should be improved through the service of various kinds of desserts.

• Research in Community and Public Health Nursing
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• v.16 no.2
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• pp.186-195
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• 2005

Purpose: This study aims to understand andropause symptoms and life satisfaction among middle-aged Korean men. Method: The subjects were selected among men in their middle age who visited one of two university hospitals or a convalescent center in Seoul. Korea. Eight items were used to measure their andropause symptoms. Life Satisfaction Index-Z was used to measure life satisfaction. Results: Major symptoms related andropause. in the order of frequency, include memory loss, muscle weakness. powerlessness and impotence. Among the subjects. 62.5% smoked and 70% drank alcohol. and life satisfaction was generally moderate in the participants. Current smokers and alcohol drinkers reported a low level of life satisfaction. Diabetic patients and subjects who had powerlessness and hot flashes of andropause symptoms experienced a low level of life satisfaction. Muscle weakness was more frequent in current smokers, and powerlessness more in alcohol drinkers. Conclusion: This study's findings indicate that and ropause is one of major health concerns among middle-aged men. It reminds us of the smoking and alcohol drinking issues among middle-aged men. These findings show the necessity to improve strategies for nursing intervention in andropause symptoms and health risk behaviors.