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청소년의 인구·사회적 요인이 식사 및 식품섭취빈도에 미치는 영향 - 제11차(2015) 청소년건강행태온라인조사를 이용하여 -
박혜량,김진희,이지혜,Park, Hye Ryang,Kim, Jin Hee,Lee, Jee Hye 대한영양사협회 2017 대한영양사협회 학술지 Vol.23 No.4
This study was conducted to explore socio-demographic influences on eating behaviors among adolescents in Korea. Data were obtained from the Eleventh Korea Youth Risk Behavior Web-based Survey (2015 KYRBS), a nationwide representative sample of 3,532,149 middle and high school students. The data were analyzed by descriptive analysis, t-test, and logistic regression based on complex sample design using SPSS 20.0 statistics. The results showed that intake frequency of soda, fast food, and instant noodles was higher in male than female students (P<0.001). Additionally, the frequency of eating breakfast, fruits, vegetables, and milk was higher among high school students than middle school students (P<0.001). Higher levels of economic status were associated with less skipping breakfast. Adolescents with mothers that had higher levels of education were more likely to be frequent consumers of fruits, vegetables, and milk, and to eat breakfast.
청소년의 인구ㆍ사회적 요인이 식사 및 식품섭취빈도에 미치는 영향 - 제11차(2015) 청소년건강행태온라인조사를 이용하여 -
박혜량 ( Hye Ryang Park ),김진희 ( Jin Hee Kim ),이지혜 ( Jee Hye Lee ) 대한영양사협회 2017 대한영양사협회 학술지 Vol. No.
This study was conducted to explore socio-demographic influences on eating behaviors among adolescents in Korea. Data were obtained from the Eleventh Korea Youth Risk Behavior Web-based Survey (2015 KYRBS), a nationwide representative sample of 3,532,149 middle and high school students. The data were analyzed by descriptive analysis, t-test, and logistic regression based on complex sample design using SPSS 20.0 statistics. The results showed that intake frequency of soda, fast food, and instant noodles was higher in male than female students (P<0.001). Additionally, the frequency of eating breakfast, fruits, vegetables, and milk was higher among high school students than middle school students (P<0.001). Higher levels of economic status were associated with less skipping breakfast. Adolescents with mothers that had higher levels of education were more likely to be frequent consumers of fruits, vegetables, and milk, and to eat breakfast.
스프링 요소를 이용한 멀티와이어쏘 장비의 베어링 배치 설계에 관한 연구
박혜량(Hye Ryang Park),이준영(Jun Young Lee),임홍재(Hong Jae Yim),정재일(Jay Il Jeong) 한국소음진동공학회 2019 한국소음진동공학회 논문집 Vol.29 No.4
In this paper, bearing arrangements for multi-wire saw were studied with the aim of reducing time and material loss in the after-treatment process. Due to the displacement of the spindle during the cutting process, the workpieces are curved. To improve the stiffness of the spindle, a bearing arrangement was performed. Because the mass of the spindle assembly is maintained in a bearing arrangement, the stiffness increases if the natural frequency increases. The bearing used in this study are angular contact ball bearings, which support both radial and axial loads. Angular contact ball bearings are modeled as a spring element that can take into account the contact angle between the spindle and the bearing. After the bearing arrangement, the natural frequency increased by 8.8 % in the first bending mode and by 9.9 % in the second bending mode, compared with the base model.
영양소섭취와 우울증상 수준의 관련성에 대한 연구 - 2016년 국민건강영양조사 자료를 이용하여 -
박혜량 ( Hye-ryang Park ),윤현주 ( Hyun-joo Youn ),이지혜 ( Jee Hye Lee ) 대한영양사협회 2018 대한영양사협회 학술지 Vol.24 No.4
The purpose of this study was to examine the relationships between the nutrient intake and level of depressive symptoms. A total of 5,761 subjects with depression were selected for the main data analysis from a Korean National Health and Nutrition Examination Survey, KNHANES (2016), and were divided into low depressed and high depressed groups. The data were analyzed by descriptive analysis, χ<sup>2</sup>-test, logistic regression, and t-test using SPSS 24.0 statistics. The results revealed significant differences in the prevalence of depression according to sex (P<0.001), age (P<0.001), income (P<0.001), and education (P<0.001). Regarding the health behavior, higher stress levels (P<0.001) and smoking habit (P<0.001) appeared to be strongly associated with high levels of depression. On the other hand, the possibility of experiencing depressive symptoms was lower when the number of walking days per week was more than 3 days (P<0.05), when the number of working days per week was more than 5 days (P<0.01), and the rate of aerobic physical activity was higher. Based on the ‘Dietary Reference Intakes for Koreans 2015’, the subjects in the low depression group showed better intake of energy and 22 nutrients than the high depression group.