• 제목/요약/키워드: percentile.

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초등학생 단신자와 장신자의 부모 키와 생활습관 비교 (Comparison of Parent's Height and Life Style between Short and Tall Stature Groups of Elementary School Students)

  • 김영혜;김미정;조영란
    • 한국학교보건학회지
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    • 제23권2호
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    • pp.200-206
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    • 2010
  • Purpose: This study compared the major parent's height and life style between short and tall stature groups of students attending the elementary schools. Methods: Data were collected during the period of 5 to 24, November 2007 at the fifth and sixth grades of the five elementary schools. Two groups were selected on the basis of the guideline titled 'Growth Standard for Infants and Juveniles in 2007': Tall group of 232 students whose height was greater than 75 percentile and short group of 227 students was less than 25 percentile. Results: The average height was 137.9 cm for short group and 155.3 cm for tall group. The results of the logistic analysis implied that parent's height was related with odds ratio equal to 1.141 for father's height and 1.145 for mother height. Analysis of the eating habit, there was no significant difference observed between the two groups. While The two group showed a statistically significant difference in their physical activity. Conclusion: There is the necessity for guidance and health education program about the proper life style.

충돌 안전도 해석을 위한 $5^{th}$ percentile 성인 여성 유한요소 모델 개발 - Part II 신체 부위 별 상세 모델 개발 (Development of $5^{th}$ percentile female finite Element Model for Crashworthiness Simulation - Part II Detail Modeling of Internal Components)

  • 나상진;최형연;이진희
    • 대한의용생체공학회:의공학회지
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    • 제25권4호
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    • pp.283-288
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    • 2004
  • 본 논문에서는 작은 여성 승객의 충돌해석을 위한 유한요소 모델링에 대하여 Part I 의 분절된 강체 모델에 이어 소개하고 있다. 추가로 모델링 된 상세한 팔, 다리 및 내부 요소들이 분절된 강체 모델에 합체되어 충돌 상해 즉 골절 또는 탈골 등을 예측하게 된다. 이러한 사지 및 내부 요소들의 거동 특성은 확보된 사체 실험 결과와 비교, 검증하였다. 따라서 본 논문에서 제안하고 있는 작은 여성 인체 모델은 충돌 상해 기구학의 조사 및 현존하는 충돌 더미의 생체 충실도를 보완하는데 활용될 수 있다.

The relationship between serum adiponectin and inflammatory cytokines in obese Korean juveniles

  • Byun, Sung Hwan;Kwon, Eun Byul;Kim, Se Young
    • Clinical and Experimental Pediatrics
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    • 제57권12호
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    • pp.533-537
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    • 2014
  • Purpose: Obesity is related to systemic inflammatory processes causing cardiovascular complications. Intercellular adhesion molecule-1 (ICAM-1), CD40 ligand (CD40L), P-selectin are newly described mediators of inflammation and have a significant effect in atherosclerosis. Adiponectin has shown anti-inflammatory effects in adults. The aim of this study was to evaluate the relationship between adiponectin and inflammatory mediators in children and adolescents. Methods: Fifty children or adolescents, twenty two with a body mass index (BMI) over 95th percentile, and twenty eight with a BMI below 75th percentile were included in the study. Serum soluble ICAM-1 (sICAM-1), P-selectin, CD40L, lipid profiles, aspartate aminotransferase, alanine aminotransferase, glucose and insulin were measured to evaluate associations with adiponectin. Comparison of these variables was performed between the obese and the nonobese group. Results: We found a adiponectin to be significant lower and sICAM-1 significant higher in the obese group compared to the nonobese group, but there were no significant differences in P-selectin and soluble CD40L. Adiponectin was negatively associated with ICAM-1 and P-selectin in the obese group. Conclusion: Negative associations of adiponectin with ICAM-1 and P-selectin in obese children and adolescents suggest that serum adiponectin level may represent the inflammatory status.

퍼지기법에 기초한 로드분배 방식에 의한 웹서버 성능향상 (A Fuzzy Technique-based Web Server Performance Improvement Using a Load Balancing Mechanism)

  • 박범주;박기진;강명구;김성수
    • 한국정보과학회논문지:시스템및이론
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    • 제35권3호
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    • pp.111-119
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    • 2008
  • 본 논문에서는 차별화 서비스를 지원하는 웹 서버의 응답시간 성능을 향상시키기 위해 기존의 동적 성능 분리 기법에 퍼지 기법을 접목한다. 특히, 클러스터 기반 웹서버 시스템의 부하량에 대한 판단 기준 흑은 사용자 요청율 및 동적요청 비율 변화시에 발생하는 애매모호한 상황을 효과적으로 반영하기 위해, 퍼지제어 기법에 기초한 로드분배 메커니즘을 제안하였다. 이를 통해, 기존의 퍼지 기법을 활용하지 않은 성능분리 기법과 퍼지기법을 활용한 경우에 대해 응답시간(95-percentile of Response Time) 성능비교 평가를 통해 퍼지기반의 성능분리 기법이 차별화 서비스 시스템의 성능을 더욱 강건하고 효율적으로 향상시킬 수 있다는 점을 검증하였다.

체질량 지수로 판정된 학령전 남아의 비만에 영향을 미치는 요인 (Risk Factors of Obesity by Body Mass Index in Preschool Boys)

  • 윤지영;박혜숙;장남수
    • Journal of Nutrition and Health
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    • 제37권2호
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    • pp.123-131
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    • 2004
  • This study was carried out to identify dietary risk factors for childhood obesity. The study subjects were male children, aged 2-6years, who were enrolled in nursery schools and kindergartens. We obtained anthropometric measurements from 949 boys and dietary questionnaires from 253 boys. The subjects were classified into two groups using the BMI criteria, normal (n=200) group with the BMI below 85th percentile and the obese group with the BMI at 85th percentile and above (n=53). The logistic regression analysis showed that the odds ratios (OR) for obesity were, birth weight greater than 4.0㎏ (3.27) , increased meal speed (4.98) , the frequency of overeating more than twice a week (2.63), the consumption of cooked rice more than one bowl per meal (2.77), the consumption of milk and dairy products less than 5 times a week (2.81), and increased maternal meal speed (1.98). Stepwise multiple logistic regression analyses showed that the variables which contribute to obesity significantly were birth weight greater than 4.0 ㎏ (OR 5.19), the frequency of overeating more than twice a week (OR 2.51) , the consumption of cooked rice more than one bowl per meal (OR 2.74), and the consumption of milk and dairy products less than 5 times a week (OR 4.43) (p<0.0001) . The results of this study indicate that dietary habits of both children and of their mothers as well as child's birth weight are important variables that contribute to childhood obesity. (Korean J Nutrition 37(2): 123-131, 2004)

학대아동과 일반아동의 동적가족화에 의한 가족지각 비교 (A Comparative Study on Family Perception between Abused Children and Normal Children by Kinetic Family Drawing)

  • 이행자;김영혜;박남희
    • 대한간호학회지
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    • 제36권2호
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    • pp.265-277
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    • 2006
  • Purpose: The study attempted to find family perception differences between abused children and normal children by Kinetic Family Drawing. Method: The subjects of the study consisted of two groups, 143 abused who were in the upper 25th percentile, and 150 normal who were in the lower 25th percentile. Collected Kinetic Family Drawings were divided into five dimensions such as actions, human figure characteristics, dynamics, styles and symbols, and they was analyzed with SPSS/WIN 10.0. Results: In the perception about their family in action dimension, their family in figure characteristics dimension, their family in dynamics dimensions, and their family in symbols dimension, there is a sharp contrast between the two groups. Conclusion: Putting these results together, abused children feel lower self-esteem and feel more sense of alienation in their family than normal children do. In addition, abused children perceive their parents as negative and aggressive people.

비전문직 취업주부의 결혼 적응과 부부간 의사소통양식 및 그 상호 관계에 대한 연구 (A Study on Non-Professional Working Wife's Marital Adjustment, Communication Style and Their Interrelationship)

  • 도미향;최외선
    • 가정과삶의질연구
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    • 제8권2호
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    • pp.69-85
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    • 1990
  • The purpose of this study is to offer basic data for satisfactory marital adjustment and functional communication by investigating marital adjustment, communication style and interrelationship between them, for non-professional working wives. Research was conducted form May, 1089 in Taegu on 470 subjects, who are non-professional working wives as questions and interview. For analysis of data, percentile, frequencies, ANOVA, Scheffe-test, X2-test, t-test were used, and through such research procedure the following major findings were obtained: 1) The marital adjustment of nonprofessional working wives were relatively high with 78 in percentile. 2) Among the related variables, husband's income, job, support and wife's motive of employment, job, age on the marital adjustment and husband's occupation, educational, level, income, the length of marriage and number of children, family style on the communication style have turned out o be significant. 3) Th higher the degree of emotional disclosure and the more open the verbal experesion, the higher the level of marriage adjustment, 4) In communication style, marriage adjustment was found to increase in such order as contactful style, speculative style, conventional style, and controlling style. Such were found to affect significantly marital adjustment.

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페달 종류 및 위치에 따른 최적 페달 레이아웃 설정 (Optimal Layout of Vehicle Pedals Depending on the Types and Positions of Vehicle Pedals)

  • 최정필;정의승;정성욱;정성욱
    • 대한인간공학회지
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    • 제26권4호
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    • pp.91-101
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    • 2007
  • The purpose of this study is to propose an optimal layout for the accelerator and brake pedals in sedan and SUV, and also to compare the pendant-type pedal with organ-type pedal. 12 male subjects participated in the experiment, the subjects were divided into 3 groups according to height percentile(under 50%ile, 50%ile to 75%ile, over 75%ile). Independent variables were seat height (H30), X and Y coordinates of the center of accelerator and brake pedals and the x and y relative distance between two pedals. Dependent variable was subjective ratings for lower body discomfort. The response surface methodology using a central composite design was employed to develop a prediction model for lower body discomfort of each pedal. It is noticeable that the lateral position of the accelerator in all groups was not statistically significant. The optimal locations of both pedals were found to be distinct according to the percentile of subjects. X distance from accelerator to brake of both-type pedals is similar. But Y distance from accelerator to brake of organ-type is less about 2-3cm than that of pedant-type.

초등학생의 계절별 피하지방 두께 및 체지방율 변화 연구 (The Study of Body Fat Percentile and Skinfold Thickness Changes of Elementary Students by Seasons)

  • 이형국
    • 한국학교ㆍ지역보건교육학회지
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    • 제1권2호
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    • pp.141-146
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    • 2000
  • The purpose of this study was to inform teachers or researchers relating teaching boys and girls of basic data for valid obesity education. The researcher collected 10 students(5 boys and 5 girls) and measured skinfold thickness and body-fat-percentile(% body fat) on 3 parts of the body every month during a year. The researcher checked the spring(March), summer(July), autumn(October) and winter(January) data consecutively and tried to answer the question that which season especially need the preventive education of obesity. The result as followed ; 1. The skinfold and BFP in summer were more bigger than those in winter but these differences were not significant. 2. Girls have a propensity to get higher skinfold and BFP than boys but these differences were not significant neither. Briefly speaking, in 12 months, the skinfold and BFP(compared in summer) in winter season has the highest and it showed that it was necessary to teach students to preserve their appropriate body fat through diverse activities. The researcher expects successive studies for much more students and by type of students are executed for supporting these results.

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저소득가정 영유아의 발달과 부모의 양육특성 및 하루 일과시간에 관한 연구 (The Development of Infants from Low-Income Families, Parenting Characteristics, and Daily Routines)

  • 강한나;박혜원
    • Human Ecology Research
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    • 제51권6호
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    • pp.613-622
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    • 2013
  • The purpose of this study was to investigate infants' development, parenting characteristics, and the infants' daily routines by monthly family income, and examine variables related to infants' development. The 2010 data of the panel study on Koreans were used. The sample for this analysis was 1,802 children aged 21-23 months and their parents. The data were analyzed with ANOVA, Pearson's correlation analysis, and multiple regression analysis with SPSS version 18.0. The results were as follows: First, the development of infants differed by the family income. Infants' communication and problem solving skills in families with an income at the 25th percentile or below was lower than those above the 25th percentile. Second, parenting characteristics differed by family income. In the lower income group, the mother's parenting stress was highest, but the father's parenting time on weekends was lowest. Third, the most frequent activity of infants differed by family income. Playing with friends or caregivers was lowest, but watching TV and videos was highest in the lower income family group. Fourth, there was a relation among infants' development (communication and fine motor skills) and parenting characteristics (mother's parenting style, stress, and father's parenting time on weekends), and the infants' daily routines (playing with friends or caregivers). Fine motor development was affected by playing with a caregiver.