• 한국학교보건학회지
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• 제22권1호
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• pp.61-65
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• 2009

AIMS: Korean National Growth Chart was newly developed at 2007. Prevalence of obesity is expected to be changed according to reference data. This study was performed to compare the prevalence of obesity based on the newly developed growth curve with that of previous data. We also investigate the incidence of obesity, overweight, and normal criteria by two kinds of growth curves. Method: We obtained weight, height from 438 middle school students and 1786 high school students. We divided enrolled students into four groups (middle school boys, middle school girls, high school boys, high school girls). The obese, over weight group was defined as BMI(body mass index) more than 95th, 85th${\sim}$94th percentile respectively for age and sex. Obesity by relative weight was defined more than 20% of ideal body weight. We compare the prevalence of obesity in each group by the newly developed Korean National Growth Chart in 2007 and that in 1998. Result: Prevalence of obesity by BMI based on 2007 Korean National Growth Chart and that in 1998 were 8.2-12.9% and 9.0-20.4% respectively. The concordance rate were 99.0%-100% in obese group and 45.0%-91.9% in overweight group according to two kinds of reference data. Prevalence of obesity by relative weight was 11.7-23.0% that was same between 2007 Korean National Growth Chart and that in 1998 except middle school boys group. Conclusion: We found that there is a decrease in prevalence of Obesity by BMI based on 2007 Korean National Growth Chart. It is necessary to evaluate correlation between criteria for obesity and obesity related comorbid conditions for finding proper BMI or relative weight cut off value to prevent obesity and obesity related complications effectively.

• 보건교육건강증진학회지
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• 제15권1호
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• pp.97-114
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• 1998

This study's purpose is to clarify the growth pattern of Down Syndrome cases -particulary centering on the adolescent growth pattern - and to draw up a standard growth chart on body height and weight which is one estimation of physical growth for the effective caring of their health. I sampled 269 Down syndrome cases (Male 151, Female 118) whose ages ranged from 6 years of age to adulthood and 348 normal control cases (Male 175, Female 173) who were in same age group with Down Syndrome. We also picked 124 Down syndromes cases(Male 70, Female 54) and gathered 8 year longitudinal data on their body height and weight. The results were that, I found Down syndrome cases' height to be short and their weight to be overweight. As far as age at peak height velocity was concerned, boys were at 11-12 years of age and girls were at 10-11 years of age, showing that girls were about one year faster. Peak height velocity was 6.8cm/yr for boys and 5.4cm/yr for girls. The age at peak weight velocity were 12-13 years for age for boys and 10-11 years of age for girls. Peak weight velocity was 5.7kg/yr for boys and 4.3kg/yr for girls. The menarche age of girls with Down syndrome was anticipated to come about 2 years after peak height velocity and peak weight velocity. Finally, we drew up a standard growth chart and compared it with that of the NCHS, which caused us to come to the conclusion that the Standard Growth Chart for Down syndrome cases in Korea that came out of this study was appropriate for the growth-assesment of Down syndrome.

• 한국환경복원기술학회지
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• 제11권6호
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• pp.112-119
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• 2008

본 연구는 자주중산국수나무와 자주맥문동의 광도변화에 따른 생육 및 생리 특성과 엽색발현을 조사하여 적정 광도를 구명하고자 한 결과는 다음과 같다. 1.자주색 잎이 특징인 중산국수나무(Physocarpus opulifolius 'Diabolo')는 차광에 따른 생육 변화를 관찰한 결과 40% 차광구에서 생육이 좋았으나 양지조건일 때 생리활성이 2배 이상 좋은 것으로 나타났다. 엽색발현은 0% 차광구에서 85% 차광구로 갈수록 진한 자주색(RHS colour chart 202A, dark grayish red)에서 녹색(RHS colour chart 139A, dark yellowish green)으로 변화되어 본래의 품종 특성인 엽의 색이 사라져 관상가치면에서 저하된 것으로 사료되어진다. 2.자주맥문동(Ophiopogon planiscapus 'Nigrescens')은 노지상태인 무차광구에서 생육이 가장 양호하였고, 관상가치면에서 생육활성이 좋은 대조구에서 선명한 자주색이 잘 나타났으며 더욱 진해진 검붉은색(RHS colour chart 202A, dark grayish)으로 엽색이 발현되었다.

• 한국기계가공학회지
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• 제4권2호
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• pp.43-49
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• 2005

The purpose of a fatigue crack arrest design is to prevent a fatigue fracture of machine and structure resulted from unstable crack growth. In all cases of load transfer to second elements such as stringers, doublers or flanges, crack arrest is possible; arrest occurring when the fatigue crack reaches the second element. In the present work, a numerical analysis was carried out to estimate the effect of shape parameters on fatigue crack growth and arrest behavior of integrally stiffened panels. Based on these results, a set of fatigue crack arrest design chart is presented as "non-dimensional arrest load - thickness ratio" relationship.

• 대한치과교정학회지
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• 제36권2호
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• pp.153-160
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• 2006

성장기 환자를 다루는 경우가 많고 치료기간이 긴 교정치료는 성장과 발육에 대한 지식이 필수적이다. 현재 활용되고 있는 일반 체성 성장 관찰 도표는 현 시대의 성장기 환자의 체성 성장 추이를 적절히 반영하지 못하고 있는바 이는 이용된 자료가 오래되었기 때문이다. 이에 따라 본 연구는 2004년 산업자원부 기술표준원에서 시행하고 대한인간공학회에서 주관한 2004년 제5차 한국인 인체치수조사사업보고서 자료를 토대로 현시성 있고 유용한 성장 곡선 및 성장 속도 곡선을 제작하는 과정을 소개할 목적으로 시행되었다. 자료를 처리하고 재배열하는 과정을 통하여 자료의 변이를 사분위수를 기본 골격으로 하고 1, 5, 95, 99 백분위수를 추가하여 남녀별 키 몸무게 성장 곡선을 제작하였고 이와 아울러 기하 평균에 기초한 성장 속도 곡선도 제작하였다. 본 연구 결과 생성된 한국인 키 및 몸무게 신 평가표는 성장 발육의 지표로 이용될 수 있으며, 성장 발육과 관련, 교정 환자와의 의사 소통에 도움이 될 수 있을 것으로 생각되었다.

• 디지털콘텐츠학회 논문지
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• 제19권6호
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• pp.1105-1114
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• 2018

최근 국내 음원 시장의 성장 속도가 두드러짐에 따라 음원 흥행 예측의 필요성이 커졌다. 본 논문에서는 인터넷 기사, SNS 등 소셜 데이터와 멜론 주간차트 진입 순위의 상관관계를 분석하여 음원 흥행의 예측 지표를 제안한다. 남자 가수와 여자 가수 각각에 대하여 총 10가지 항목의 소셜 데이터를 수집하였고, 군집 분석을 실시하였다. 이를 통해 남자 가수와 여자 가수 각각의 유의미한 음원 흥행 예측 지표를 발견하였다.

• 생물환경조절학회지
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• 제25권2호
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• pp.106-110
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• 2016

식물의 생육과 생산성을 예측하는 것은 매우 중요한 일이다. 본 연구는 common ice plant (Mesembryanthemum crystallinum L.)의 작물생장률, 상대생장률, 지상부 생체중과 건물중, 수확시기, 상품률과 상품수량과 같은 생육과 수확 요인들을 쉽게 읽을 수 있는 재식밀도-생육-수확(PGH) 도표를 만들기 위함이다. 광도 $140{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$과 일장 12시간 주기로, 3파장 형광등을 이용한 완전제어형 식물공장 시스템에서 박막수경 재배하였다. 4가지 재식밀도($15{\times}10cm$, $15{\times}15cm$, $15{\times}20cm$, and $15{\times}25cm$) 하에서 생육과 수량을 분석하였다. 재식밀도가 증가할수록 어느 한계까지는 식물체당 생체중과 건물중은 증가하는 경향이었으며, 단위면적당 생체중인 수량 또한 같은 경향을 보였다. 작물생장률, 상대생장률과 lost time은 2차 등식 형태를 보였으며, 지상부 생체중과 건물중은 직선적인 관계를 보였다. 이러한 등식을 이용하여 재식밀도-생육-수확(PGH) 도표를 만들었다. 예를 들면, $15{\times}20cm$ 재식밀도와 식물체당 생체 중 100g에서 수확할 경우, 재식주수, 작물생장률, 상대생장률, lost time, 식물체당 건물중, 수확시기와 수량은 각각 $33plants/m^2$, $20g{\cdot}m^{-2}{\cdot}d^{-1}$, $0.27g{\cdot}g^{-1}{\cdot}d^{-1}$, 22days, 2.5g/plant, 정식 후 26일과 $3.2kg{\cdot}m^{-2}$이었다. 이 도표를 가지고 적어도 2가지 요인 예를 들면, 재식밀도와 수확요인 중 하나만 알면, 작물생장률, 상대생장률, lost time과 같은 생육 요인과 지상부 생체중, 지상부 건물중, 수확시기와 수량과 같은 수확 요인들을 쉽게 구할 수 있다. 이러한 도표는 다양한 작물의 생육과 수량 요인을 예측할 수 있어 완전제어형 식물 생산 시스템 설계를 위해 유용한 도구가 될 것이다.

• 대한한방소아과학회지
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• 제32권4호
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• pp.51-62
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• 2018

Objectives The purpose of this study is to analyze the characteristic of pediatric patients who visited oriental medical hospital for growth treatment. Methods The study was conducted with 130 pediatric patients who visited ${\bigcirc}{\bigcirc}$ Korean medicine hospital from January 2016 to August 2017. The patient's data was classified by sex, age, pattern identification and diseases. The classified data was analyzed to find the correlations and characteristics among variables. Results There were 50.8% of boys and 49.2% of girls. 6.2% of the total patients were in 'early childhood', 50.8% were in 'late childhood' and 43.1% were in 'puberty' stage. In terms of pattern identification, 44.6% of the total patients were 'Spleen-lung Qi Deficiency', 53.8% were 'Lung-kidney Yin Deficiency' and 1.5% were 'Weakness of Heart and gallbladder'. 44.3% of the patients had various diseases including rhinitis (77.6% of 120.7%). Height percentile of the children with using the Growth chart of 2017 was lower than using the Growth chart of 2007. Predicted height based on the child's bone-age were higher than the predicted height based on the parental height, although both of the precited factors were correlated to the current child's height. Conclusions This study showed the characteristic of the pediatric patients who visited oriental medical hospital for growth treatment. It helps to determine prognosis and treatment, and to explain treatment measures.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제16권3호
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• pp.137-142
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• 2013

After the WHO Growth Standards (WHOGS) was published in 2006, many countries in the world endorsed and adopted the new growth references as a standard measure for the growth of infants and young children. Certainly, the WHOGS has an impact on the global policy about obesity and underweight in children. Such WHOGS innovation has influenced many regional health authorities and academies, which have managed their own growth charts for a long time, in changing their strategies to develop and use regional growth charts. In Korea, along with the tradition to create a national growth chart every decade, we now face a new era of advancing with the WHOGS.

• 한국기계가공학회지
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• 제5권2호
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• pp.42-48
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• 2006

In order to assess the validity of fatigue crack arrest design charts obtained from our previous numerical approach to fatigue crack arrest condition, an extensive fatigue crack growth/arrest test was performed using CT-type integrally stiffened panels. The results are presented as fatigue crack growth rate and non-dimensional crack length relationship, and these are compared with numerically simulated crack growth rates. The measured values of da/dN at the moment of fatigue crack arrest occurred in stiffened panels are good agreement with those numerically simulated crack growth rates.