• 한국수학교육학회지시리즈A:수학교육
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• 제58권4호
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• pp.589-607
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• 2019

학생들이 수학 교과서에 대해서 어떻게 생각하는지 또한 학습에서 어떻게 활용하는지에 대하여 알려진 바가 거의 없다. 이 연구에서는 고등학생들이 수학 교과서를 어떻게 인식하고 활용하는지를 탐색하고자 하였다. 인터뷰 질문지를 개발하여서 고등학생 11명을 대상으로 인터뷰를 실시하였다. 그 결과로, 다음 세 가지 측면을 발견하였다. 첫째, 학생들은 교과서를 수업에서 활용하는 자료로 인식하며 대학 입학시험을 준비하는 데 중요한 교재로 사용하는 것으로 나타났다. 둘째, 학생들은 교과서를 학교에서 시행하는 중간 또는 기말고사 등 정기고사 시험을 대비하는 데 있어서 필수로 사용하지만, 실질적인 학습에는 매우 한정하여서 활용하는 것으로 나타났다. 셋째, 학생들은 교과서를 통해서 기르고자 하는 수학적 사고능력이 무엇인지에 대하여서는 거의 파악하지 못하는 것으로 나타났다.

• 한국융합학회논문지
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• 제9권10호
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• pp.549-559
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• 2018

본 논문은 중년 성인의 우울 유병 현황과 성별에 따른 우울 증증도 관련요인의 차이를 분석하기 위해 시도되었다. 2014년 국민건강영양조사 원시자료를 이용하여 중년 성인(40~64세) 2,241명을 분석대상으로 하였다. 우울 증상은 Patient Health Questionnaire-9 (PHQ-9)으로 측정된 자료를 활용하였고, 우울을 3단계로 구분하여 우울 중증도의 관련요인을 다변량 순위회귀분석으로 분석하였다. 분석 결과, 중등도 이상 우울($PHQ-9{\geq}10$)은 5.2% (남성 3.3%, 여성 7.0%)로 확인되었다. 중년 남성에서 우울 중증도의 관련요인은 낮은 연령, 동 지역 거주, 무직, 저체중, 고위험 음주이었고, 중년 여성은 배우자 없음, 낮은 수입, 신체적 활동제한, 적은 수면시간이었다. 본 연구결과는 우울 위험의 성별 차이에 대한 이해를 토대로 중년 성인의 성별 특성에 기반한 정신건강 프로그램을 개발함으로써 우울증상을 조기에 발견하고 예방하는데 실질적인 도움을 줄 것으로 기대한다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권15호
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• pp.6307-6313
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• 2014

The aim of this study was to examine the knowledge and awareness of women in Kuwait with regard to risk factors, symptoms and diagnostic procedures of breast cancer. A total of 521 questionnaires were distributed among women in Kuwait. Results showed that 72% of respondents linked breast cancer factors to family history, while 69.7% scored abnormal breast enlargement as the most detectable symptom of the disease. Some 84% of participants had heard about self-examination, but knowledge about mammograms was limited to 48.6% and only 22.2% were familiar with diagnostic procedures. Some 22.9% of respondents identified the age over 40 years as the reasonable age to start mammogram screening. Risk factor awareness was independent on age groups (p>0.05), but both high education and family history increased the likelihood of postivie answers; the majority knew about a few factors such as aging, pregnancy after age 30, breast feeding for short time, menopause after age of 50, early puberty, and poor personal hygiene. In conclusion, 43.1% of participants had an overall good knowledge of breast cancer with regards to symptoms, risk factors and breast examination. Very highly significant associations (p<0.005) were evident for all groups except for respondents distributed by nationality (p=0.444). Early campaigns for screening the breast should be recommended to eliminate the confusion of wrong perceptions about malignant mammary disease.

• Journal of Nutrition and Health
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• 제44권5호
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• pp.406-415
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• 2011

Recent studies have shown that high consumption of processed meat may be associated with increasing risk of metabolic syndrome, which have been suggested as a predictor of diabetes and cardiovascular disease. However, limited studies have investigated this association in Korean population. The purpose of this study was to investigate the cross-sectional association between processed meat/unprocessed (beef, pork, chicken) intakes and the prevalence of metabolic syndrome. Using data from 2007-2008 Korean National Health and Nutrition Examination Survey (KNHANES), we analyzed data including 5,545 men and women who were aged older than 20 years, and who were free of chronic disease such as hypertension, type 2 diabetes and cardiovascular disease. Subjects who frequently consumed processed meat tended to be younger and more likely to be current smokers. In addition, men were more likely to consume processed meat than women. Although higher processed/unprocessed meat intakes were significantly associated with the lower risk of metabolic syndrome in a crude model, these associations were no longer significant after adjustment for potential confounding factors. For example, comparing subjects in the highest intake quartile of processed meat with the lowest intake group, the multivariate-adjusted odds ratio (OR) of metabolic syndrome was 0.92 (95% CI: 0.58-1.46) for processed meat, 1.09 (95% CI: 0.76-1.56) for beef, 1.10 (95% CI: 0.74-1.62) for pork and 0.75 (95% CI: 0.51-1.12) for chicken. In conclusion, we found no evidence of any adverse effects of frequent processed or unprocessed meat intakes on the prevalence of metabolic syndrome among Korean adults at the exposure levels seen in this study.

• Nutrition Research and Practice
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• 제8권1호
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• pp.74-80
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• 2014

Water is essential for life and plain water instead of sugar-sweetened beverages is one approach for decreasing energy intake. Due to limited data on characteristics associated with water intake among Korean adolescents, this study examined associations of demographic and behavioral characteristics with plain water intake by using nationally representative sample of South Korean adolescents. The data (2007-2010 Korea National Health and Nutrition Examination Survey) for 1,288 high school-aged adolescents (15-18 years) were used. Multivariable logistic regression was used to calculate adjusted odds ratios (OR) for factors associated with low water intake (< 4 cups/day) and very low water intake (< 2.5 cups/day). Nationwide, 38.4% and 19.0% of adolescents reported drinking water < 4.0 cups/day and < 2.5 cups/day, respectively. The mean plain water intake was 5.7 cups/day for males and 4.1 cups/day for females. Females had significantly higher odds for drinking water < 2.5 cups/day (OR = 2.2) than males, whereas adolescents with low milk consumption had significantly lower odds for drinking water < 2.5 cups/day (OR = 0.7). Factors significantly associated with a greater odds for drinking water < 4 cups/daywere being female (OR = 2.8) and not meeting physical activity recommendations (${\geq}20$ min/day on < 3 days/week) (OR = 1.6). Being underweight, overweight, and obese were significantly associated with reduced odds for drinking water < 4 cups/day (OR = 0.7, 0.4 and 0.5, respectively). However, intake of soda, coffee drinks, fruits, vegetables, and sodium and eating out were not significantly associated with low or very low water intake. These findings may be used to target intervention efforts to increase plain water intake as part of a healty lifestyle.

• Composites Research
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• 제30권6호
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• pp.331-337
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• 2017

복합재 격자 구조물은 무게가 가볍고 비강성, 비강도가 높다는 장점이 있으며 주로 압축 하중이 작용하는 발사체구조에 적용된다. 그러나 필라멘트 와인딩 기법으로 제작되므로 섬유가 겹쳐지는 부분에서 기공과 결함이 발생하게 된다. 설계 하중 도출을 위한 해석 모델 검증을 위해 구조물의 강성, 강도 확인이 필요하지만 Full scale 시험의 경우 시간, 공간상의 제약이 따르며 구조물의 형상이 복잡하므로 시험에 어려움이 많다. 따라서 강성 확인을 위한 Subelement 단위의 시험법이 필요하다. 본 논문에서는 복합재 격자 구조물을 단위격자구조로 가공하였으며 각각 압축, 굽힘 시험을 수행하여 나선 리브, 원주 리브의 강성을 확인하였다. 휘임, 비틀림 형상을 가진 원통형 복합재 격자 구조물의 강성 평가를 위한 압축, 굽힘 시험법을 제안하였으며 유한요소해석을 수행하여 시험결과와 비교하였다.

• 대한지역사회영양학회지
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• 제16권3호
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• pp.364-374
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• 2011

There is a great public concern that higher consumption of eggs may increase the risk of chronic disease due to high levels of cholesterol in eggs. In contrast to this concern, limited studies have examined this relationship, and the study results have been inconsistent. This study was to evaluate the cross-sectional associations between egg consumption, blood markers and metabolic syndrome in Korean adults. We analyzed data from the combined 2007-2008 Korean National Health and Nutrition Examination Survey (KNHANES). Egg intakes were assessed using a food frequency questionnaire. Metabolic syndrome was ascertained using criteria of the NCEP ATP III (2001) and abdominal obesity criteria of the WHO. In 5,548 subjects, 937 subjects were defined as having metabolic syndrome. In linear regression models, subjects reporting one or more egg consumption per day had significantly lower levels of triglyceride, fasting blood glucose and blood pressure, and a higher level of HDL cholesterol, compared to those who rarely consumed eggs (P-trends < 0.05). After adjustments for potential confounding factors, the associations were no longer significant except for total cholesterol, showing higher levels with frequent egg consumption. More frequent intakes of egg (1 egg or more/day) were associated with lower risk of metabolic syndrome in a logistic regression model (OR: 0.69, 95% CI: 0.50-0.96), but this association also became insignificant after adjustments for multiple confounding factors (OR: 1.05, 95% CI: 0.71-1.57). In healthy Korean adults, frequent intakes of eggs did not adversely affect the risk of metabolic syndrome. Further studies are needed to confirm this finding.

• 한국임상수의학회지
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• 제35권3호
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• pp.107-110
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• 2018

A 5-year-old Thoroughbred race horse was presented to Busan Korea Racing Authority equine hospital with a 3-year history of a slow-growing left rostral maxillary mass. The location and progressive growth of the mass eventually resulted in poor food prehension, quidding and mouth bit placement. The mass was solitary and hard, and covered by normal smooth oral mucosa. Radiographic examination of the maxillae showed a flocculated and mixed radiolucent lesion protruding outward and displacing the 202 and 203 teeth caudally. The 202 tooth was in normal size and the 203 tooth was hypoplastic on radiography. Under general anesthesia, a partial surgical resection of the mass was performed to minimize functional loss and facilitate prompt return to track. After surgery, there was improvement in food intake, mouth bit placement, and cosmetic appearance. Histopathological examination determined the resected maxillay mass to be an ossifying fibroma. However, there was continued growth of remnant mass in the maxilla. Equine ossifying fibroma is a rare condition and primarily affects the rostral mandible, and less commonly, the maxillae. In this case, the lesion was slow-growing, and caused cosmetic and functional impairments, including poor food intake and reduced trainability. Surgical resection was performed, but the effect of treatment was limited due to advanced size / stage of the tumor. Early dental care is suggested for horse owners to prevent belated identification and improve successful treatment of oral disorders like ossifying fibroma.

• Annals of Clinical Neurophysiology
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• 제9권1호
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• pp.5-10
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• 2007

Background: Bell's palsy (BP) is a self-limited rapid onset facial palsy that is non-life-threatening and has a generally favorable prognosis. Facial paralysis can be caused by numerous conditions, all of which should be excluded before the diagnosis of BP is reached. The etiopathogenesis and clinical course of BP are uncertain. So we analyzed the epidemiology and clinical course of BP patients. Methods: The subjects include 100 cases of BP examined during the period of 18 months. Careful clinical history, neurologic examinations, laboratory tests, electrophysiologic studies, and brain imaging were performed. Follow-up examinations were done once a week during the first month and subsequently once a month until normal function was restored or for up to 3 months. Facial nerve function was assessed by House-Brackman (HB) facial nerve grading scale and electrophysiologic studies. Results: Except 13 recurrent BP patients, we analyzed 87 BP patients. Forty-four (50.6%) were men and 43(49.4%) were women and the mean age was 51.0(${\pm}16.6$) years. Three (3.4%) patients showed a familial tendency. The initial examination within 1 week after attack revealed 35.2% was below HB grade 4 and 64.8% was above grade 3. The associated symptoms are as follows; postauricular pain, increase tear flow, taste change, hyperacusis and drooling. The initial facial nerve conduction study and blink reflex within 1 week after attack showed abnormal findings in 12.6% and 100%, respectively. Brain MRI was performed in 59(67.8%) patients and showed abnormal enhancement of affected nerve in 57(96.6%). Follow-up examination showed that 78.2% of the patients partially improved within 4 weeks and completely improved within 3 months. Finally 80.5% of the total patients obtained normal function in 3 months. Conclusions: We report epidemiologic, clinical, electrophysiologic and radiologic characteristics of BP patients.

• 한국식생활문화학회지
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• 제35권1호
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• pp.107-116
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• 2020

There is only limited evidence for the association between fruit and vegetable consumption and mental health in Korea. This study examined the relationship between fruit and vegetable consumption and mental health according to physical activity among Korean adult women. Based on data of the Korean National Health and Nutrition Examination Survey (2014-2016), a total of 5,332 participants were included in this analysis. With increasing fruits and vegetables consumption, the prevalence of depressive mood was significantly decreased (p for trend=0.0248). The prevalence of stress perception (p for trend=0.0422) and the prevalence of depressive mood (p for trend=0.0300) were decreased with increasing fruit consumption. The prevalence of depressive mood was significantly decreased when fruit and vegetable consumption (p for trend=0.0370) and fruit consumption (p for trend=0.0356) were increased for those Korean women with low intensity of physical activity. For the obesity group (Body mass index 25 kg/㎡), the prevalence of depressive mood was decreased with increasing fruit and vegetable consumption (p for trend=0.0111) and increasing fruit consumption (p for trend=0.0165). In conclusion, fruit and vegetable consumption were associated with mental health according to physical activity among Korean adult women. Further prospective studies are warranted to explore the association between fruit and vegetable consumption and mental health among Korean adult women.