• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.9 no.2
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• pp.218-225
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• 2006

Purpose: With a remarkable increase in the prevalence of childhood obesity, the prevalence of nonalcoholic fatty liver disease is assumed to be increasing. The aim of this study is to evaluate the prevalence of nonalcoholic fatty liver disease, hyperlipidemia, and glucose intolerance in normal and obese children. Methods: A total of 2,206 elementary students (boys: 1340, girls: 866) were grouped according to obesity index; normal group and obesity group (mild, moderate, severe). Aspartate aminotransferase (AST, SGOT) and alanine aminotransferase (ALT, SGPT) were measured with total cholesterol, triglyceride, and fasting blood glucose. Results: Compared with the 4.6% of elevated aminotransferases in normal group, obese groups showed significantly higher prevalence; 12.1% in mild obesity group, 19.4% in moderate group, and 21.6% in severe group (p<0.0001). The prevalence of hypertriglyceremia was 16.9% in normal weight group, which was significantly lower than obesity group (mild obesity group 30.3%, moderate and severe 37.6%, 38.2% each). In boys, the prevalences of elevated aminotransferases in normal weight and obese groups (mild, moderate, severe) were 6.8%, 18.0%, 23.0%, and 26.0%, respectively (p<0.0001). In girls, those were 2.1%, 5.1%, 12.0%, and 12.6%, respectively (p< 0.0001). The prevalence of hypertriglyceremia was relative to severity of obesity in boys and girls (p<0.0001). Conclusion: The prevalence of elevated serum liver enzymes increased with severity of obesity. For the prevention and treatment of fatty liver and hypertriglycemia, it is important to lower the obesity degree and enforce the education for a weight loss in the student and the parents.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.335-344
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• 2020

This study compared the structures and changes of help network between pre-service secondary teachers and pre-journalists who participated in the class related to network analysis to seek ways to activate a professional learning community. For this study, we used Exponential Random Graph Models (ERGM) based on ties as being interdependent and not conventional regression models requiring assumptions of independence between observations. The analysis subjects were 43 pre-service secondary teachers and 29 pre-journalists who responded both early and late in the help network survey. The main results were as follows. First, full models with network structural terms were better than simple models with no structural terms. Second, the effect of transitivity was not statistically significant in the pre-service secondary teachers' network. However, it was statistically significant in the pre-journalists' network. Third, there were effects of reciprocity, indegree popularity, and outdegree activity in the early help network of pre-service secondary teachers. On the contrary, there were only the positive effects of reciprocity and the negative effect of outdegree activity in the late network. Finally, this study demonstrated the possibility in educational fields' application of network structural effects and provided limitations and directions for future research.

• 한국데이터정보과학회:학술대회논문집
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• 2003.05a
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• pp.57-63
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• 2003

시대적으로 요구되는 수요자(학습자) 중심 교육의 구현과 교육 공급자(학교)는 학습자의 적성, 능력, 흥미, 진로에 부합하는 교육과정을 개방하고 이에 적합한 교육환경을 제공하여 학습 주체인 학습자가 교육을 통해 생활에 필요한 능력과 적성에 맞는 진로를 찾을 수 있도록 교육과정을 운영하는 것이 제7차 교육 과정의 핵심이다. 1997년부터 시행되어 2002년 고등학교에서 처음 실시한 수학과교육과정 속의 초등 및 중등학교 통계교육과정의 개요와 특성을 살펴보고 문제점을 제시한다.

• The Mathematical Education
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• v.42 no.4
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• pp.561-577
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• 2003

Because statistical concepts are important parts in school mathematics, mathematics teachers have trained by special education model. In this study, a desirable direction of curriculum on probability and statistics at pre-service for mathematics teacher is considered. We proposed four subjects as Exploration and Analysis of Data for Mathematics Teacher, Probability and Statistics I, II for Mathematics Teacher and Statistical Software for Mathematics, and suggested the constituents and something being kept in mind for each subject.

• Journal of the Korean School Mathematics Society
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• v.23 no.3
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• pp.397-425
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• 2020

Statistical literacy is a key ability expected of citizens in information-laden societies, and is often revealed as an expected outcome of schooling and as a necessary component of adults' numeracy and literacy. Knowing how important statistical literacy is, the purpose of this research was to measure statistical literacy of adults and secondary mathematics teachers. This study explored the statistical literacy based on the level of understanding in poll results and analyzed the data obtained through semi-structured interviews with 20 secondary mathematics teachers and 20 adults. As a result, the following conclusions were obtained: First, few secondary mathematics teachers and adults correctly recognized the meaning of statistical terms and expressions included in the poll results. Second, 70% of research participants did not reach levels 3 or 4 of statistical literacy levels. Third, the statistical literacy level of secondary mathematical teachers was higher than that of adults.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.399-408
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• 2011

The purpose of this study was to investigate the relationship between internal marketing and job satisfaction and organizational commitment of secondary physical education teachers. The subject who 286 people worked for secondary physical education teachers in Busan, using cluster random sampling. Finally 258 questionnaires were analyzed using SPSS 15.0 and the results were as follows. First, internal marketing had an effect on job satisfaction of secondary physical education teacher. Second, internal marketing had an effect on organizational commitment of secondary physical education teacher. Third, job satisfaction of secondary physical education teacher had an effect on organizational commitment.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.317-321
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• 2020

This study researched the correlation between myopic refractive errors and intraocular pressure. The study population comprised 39 adults(17 of males, 22 of females). We measured the intraocular pressure using a Non-Contact Tonometer(NCT) and the correlation between myopic refractive errors was analyzed by dividing into three groups: mild, moderate, high myopia. The gender of subjects showed no statistically difference between the intraocular pressure and refractive errors, but as the refractive errors increased, the intraocular pressure incereased, which showed a statistically significant difference. In addition, the higher intraocular pressure in moderate and high myopia than mild myopia can cause glaucoma, that can develop at a young age. it is need to sufficient recognition and understanding correlation between intraocular pressure and myopic refractive errors in the middle-aged high myopia.

• School Mathematics
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• v.17 no.3
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• pp.469-492
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• 2015

This study explored secondary mathematics teachers' mathematical knowledge for teaching [MKT]; in particular, it focused on teachers' knowledge of functions. In order to measure teachers' MKT, we developed items according to Ball, Thames & Phelps (2008)'s domains and conducted to 34 secondary mathematics teachers in 5 high schools in Seoul. The findings from the data analysis suggested as follows: a) overall, the teachers scored average 67.4 out of 100, 87.43 in Common Content Knowledge[CCK], and the average score of Specialized Content Knowledge [SCK] was the lowest; b) correlations among SCK, KCS, and KCT were statistically significant; and c) there was no sign of statistical significance between CCK and the rest.

• Journal of Korean Home Economics Education Association
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• v.33 no.3
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• pp.129-142
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• 2021

The purpose of this study was to provide educational data on teaching clothing culture by examining the effects of clothing lifestyle on attitudes toward teachers' clothing for 270 secondary school pre-service teachers. For data analysis, factor analysis, Cronbach's α reliability coefficients, t-tests, one-way analysis of variance, Duncan's multiple comparison verification, and multiple regression analysis were performed using SPSS 24.0 program. As a result of the study, first, the clothing lifestyle of secondary school pre-service teachers was classified as fashion trend orientation, clothing importance orientation, attractive appearance orientation, and economic orientation factors. In addition, the attitude toward teacher's clothes was classified into activity, fashionability, and modesty factors. Second, there was a statistically significant difference in the attitudes toward clothing lifestyle and teacher clothing of secondary school pre-service teachers according to gender and year in college, which are demographic variables. Third, it was found that the clothing lifestyle of secondary school pre-service teachers, who are Generation Z, had an effect on the attitude toward teacher clothes. In conclusion, this study proposes that school administrators and teachers should depart from the former stereotypes about teacher clothes and to encourage a culture in which teachers can dress and perform their role of teaching according to individual's changing lifestyles.

• Journal of the Korean School Mathematics Society
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• v.9 no.3
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• pp.309-316
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• 2006

This study examined the ambiguous using the terminology of statistics at mathematics textbook of highschool in Korea and proposed the correct using of sampling error and sampling distribution of sample mean with consistency. And this paper proposed that the concept of error have to teach in context of sampling action in school mathematics.