• 한국의류학회지
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• 제24권3호
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• pp.345-352
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• 2000

The purpose of this study was to classify lower body types of elementary school girls. The subjects for anthropometric study were 368 girls aged from 10 to 11. Factor analysis, cluster analysis, discriminant analysis, and analysis of variance were performed for statistical analysis of the data. Four lower body construction factors were extracted by the factor analysis of antropometric measurements. The factors extracted were lower body fatness factor, lower body height factor, lower body length from the waist to the crotch factor, and lower body configuration factor. On the basis of the cluster analysis, three different lower body types were categorized. Type 1 was short and small sized type and 42.4% of subjects belonged under this type. Type 2 was tall and fat type and 22.3% of subjects belonged under this type. Type 3 was the most similar to the average type having the largest waist-hip drop value and 35.3% of subjects belonged under this type. Discriminant analysis showed 7 discriminant factors that can classify the children's lower body type were Rohrer's index, height, fibulae length, waist girth, ilio cristale girth, trochanter girth, and weight.

• Food Science and Biotechnology
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• 제17권2호
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• pp.367-372
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• 2008

Cellular protection against carcinogens could be achieved by the induction of phase 2 detoxifying and antioxidant enzymes such as glutathione S-transferase (GST), NAD(P)H:quinone oxidoreductase 1 (NQO1) and heme oxygenase 1 (HO1). Nuclear transcription factor E2-related factor 2 (Nrf2) binds to antioxidant response element (ARE) in the promoter region of these genes and the resulting transactivation occurs. In the present study the effect of gujeolcho (Chrysanthemum zawadskii) roots on the Nrf2-ARE pathway were investigated. C. zawadskii root extract was fractionated with a series of organic solvents and their ability to induce Nrf2-ARE pathway was examined. We separated the most potent dichloromethane (DCM) fraction into 12 sub-fractions and found several sub-fractions with strong effects on the Nrf2-ARE pathway. Fraction 4 strongly induced the ARE-reporter gene activity as well as Nrf2 expression. Sitosterol was isolated as a major compound in fraction 4 although its activity was not as potent as its mother fraction. These results indicate that C. zawadskii roots might be used as a potential natural chemopreventive source.

• 한국의상디자인학회지
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• 제12권2호
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• pp.75-90
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• 2010

Teenagers are considered as one of important consumer groups by marketers because of their high purchasing power and impulsive purchasing propensity. Especially high school girls are most significant purchasing group of them. The purpose of this study is to investigate the effect of high school girls' lifestyle on shoes purchasing behavior and shoes wearing satisfaction. This study surveyed 428 high school girls in Seoul and Chonbuk area. Data were statistically analyzed using SAS 9.1.3 for Window. Major statistical methods are factor analysis, Cronbach's ${\alpha}$ coefficient, cluster analysis, frequency analysis, Chi-square test, multiple regression analysis, ANOVA and Duncan test. The shoes purchasing behavior is significantly different according to students' lifestyle. Activity-pursuing group's major shoes purchasing factor is practical use and fashion & scholar-pursuing group's major shoes purchasing factors are fashion and brand. Relationship between lifestyle and shoes purchasing pattern is as follows. Activity-pursuing group and fashion & scholar-pursuing group purchased shoes more frequently than family-pursuing group. Fashion & scholar-pursuing-group purchased shoes for the harmony of suit and shoes. As for wearing satisfaction, design is the primary factor and price was the least significant factor in sports shoes, while durability is the primary factor and material is the least significant factor for the casual shoes.

• 한국산학기술학회논문지
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• 제14권5호
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• pp.2168-2177
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• 2013

본 연구는 대졸자 직업이동 경로조사 (GOMS: Graduates Occupational Mobility Survey) 2010년도를 활용하여 대졸자 4051명의 취업결정요인의 주관적 인지가 직무만족에 미치는 영향을 분석하였다. 취업결정요인의 주관적 인지는 학력요인, 자격/전공요인, 인성/인맥요인 등으로 설정하였고, 직무만족을 내재적 만족과 외재적 만족 등으로 구성하였다. 연구결과는 다음과 같다. 첫째, 대졸자의 성별, 학교유형, 학교소재지, 전공 등에 따라 취업결정요인의 주관적 인지와 직무만족에 차이가 있었다. 둘째, 비수도권 소재 학교, 교육계열, 학력요인, 자격/전공요인, 인성/인맥요인 등이 내재적 만족에 정(+)의 영향을 끼치는 것을 알 수 있었다. 셋째, 2~3년제 대학, 비수도권 소재 학교, 사회계열, 교육계열, 공학계열, 자연계열, 의약계열, 학력요인, 자격/전공요인, 인성/인맥요인이 외재적 만족에 정(+)의 영향을 끼치는 것을 알 수 있었다. 본 연구는 대학생의 취업결정요인의 주관적 인지에 대한 세분화된 분석 자료를 제공하고 직무만족에 대한 새로운 검증에 의미가 있다.

• 한국안전학회지
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• 제33권3호
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• pp.71-76
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• 2018

The purpose of this study is to analyze the factors affecting the roundabout accidents near schools. This study gives particular attentions discussing characteristics by pedestrian accident severity using the ordered logit models. In pursuing the above, 63 roundabouts installed before 2014 are surveyed for modeling. the traffic accident data from 2014 to 2016 are collected from TAAS data set of Road Traffic Authority. Such 35variables explaining the accidents as environment, human, geometries, school and roundabout factor are selected from literature reviews. The main results are as follows. First, the ordered logit models (${\rho}^2$ of 0.272, $x^2$ of 24.723) which is statistically significant have been developed. Second, environment factor variable is analyzed to be day or night ($X_1$ ), human factor variables are evaluated to be driver gender($X_4$), older driver($X_5$), pedestrian gender($X_7$) and children pedestrian($X_8$ ). Third, geometries factor variable are analyzed to be speed limit sign($X_{16}$) and median barrier($X_{21}$), school factor variables are evaluated to be hump-type crosswalk($X_{25}$), CCTV($X_{26}$) and school zone sign($X_{27}$), roundabout factor are analyzed to be roundabout sign($X_{30}$) and number of circulatory roadway lane($X_{32}$). Finally, this study could give some implications to decreasing the accidents severity at roundabout near schools.

• 한국학교ㆍ지역보건교육학회지
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• 제18권2호
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• pp.1-25
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• 2017

Objectives: There is higher rates of experience of suicide ideation and suicide attempt of adolescents in the Lima and Callao region compared with the results of the epidemiological study (2013) conducted by Peru National Institute of Mental Health and the Global School-based Student Health Survey (2010) which is was conducted among adolescents across all regions of Peru. Based on the PRECEDE model, this study analyzed the prevalence and the factor associated with the suicide attempt among the adolescent in a poor urban area in Peru. Methods: A stratified random sampling was used for the survey to select study participants from the 6 secondary schools based in Comas or Callao. The survey was conducted November 25th and December 4th in 2015 and a total of 738 individuals included in the analysis. In order to analyze factors influencing suicide attempt, comparison of predisposing factor, reinforcing factor, enabling factor, behavioral factor, environmental factor, psychological factors by suicide attempt and suicide risk group were identified through the chi-square test and hierarchical logistic regression. Results: Results showed that those who reported having less parental understanding, less time spent with parents, and 'almost none/none' for parental affection had more experience of suicide attempt and were more likely to sort into the high suicide risk group. Also, a greater proportion of those with the experience of suicide attempt had more experience of smoking and alcohol consumption, and experience of physical abuse and feeling insulted and depression in comparison to that of those without experience of suicide attempt. Variables that had a significant effect on suicide attempt included depression, subjective happiness, smoking experience, sexual intercourse, involvement in fight, parental affection, and gender (male). Conclusions: The results of the current study can serve as grounds for the necessity of acknowledging that adolescent suicide does not simply depend on a couple of factors, but arises from situations in which individual, home, school, social factors influence one another, and therefore adolescent suicide should be prevented and addressed through a multi-dimensional and integrated approach.

• 산업융합연구
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• 제19권4호
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• pp.57-64
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• 2021

본 연구의 목적은 청소년의 개인요인과 부모요인, 학교요인이 그릿 간의 관계를 분석하는 것을 목적으로 수행되었다. 이를 위해 한국아동·청소년 패널조사(KCYPS 2018)자료를 활용하여 중학교 1학년 학생 2,394명을 표본으로 선정하여 분석하였다. 분석결과는 다음과 같다. 첫째, 청소년의 개인요인인 자아존중감과 주의집중은 그릿에 유의미한 영향이 있는 것으로 확인되었다. 둘째, 청소년의 부모요인인 거부, 강요, 비일관성은 그릿에 유의미한 영향이 있는 것으로 확인되었다. 셋째, 학교요인인 교사관계는 그릿에 유의미한 영향이 있는 것으로 확인되었다. 분석결과를 토대로 청소년기에 그릿에 미치는 요인들을 예측하여 후속연구에 제언하였다.

• 한국산학기술학회논문지
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• 제20권2호
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• pp.122-129
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• 2019

본 연구의 목적은 초등학교 고학년을 대상으로 충동성과 자살행동(자살계획, 자살시도) 간의 관계에서 보호요인(개인요인, 가족요인, 또래요인, 학교요인)의 조절효과를 검증하는 것이다. 이를 위하여 서울지역 초등학생 5~6학년 573명을 대상으로 충동성, 자살행동, 보호요인 척도에 대한 설문을 실시하였다. 먼저 자살행동의 실태를 파악하기 위하여 빈도 분석을 하였으며, 변인들의 관계를 알아보기 위하여 상관분석을 실시하였다. 또한 충동성과 자살행동과의 관계에서 보호요인의 조절효과를 알아보기 위해 위계적 회귀분석을 실시하였다. 이를 통한 본 연구의 결과는 다음과 같다. 첫째, 연구대상의 29명(5.1%)은 자살계획을 세워 본 적이 있으며, 17명(3.0%)은 자살시도를 해 본 것으로 나타났다. 또한 자살행동을 보고한 학생은 41명(7.1%)으로 집계되었다. 둘째, 초등학생의 충동성과 보호요인(개인요인, 가정요인, 또래요인, 학교요인)은 모두 유의미한 부적 상관을 보였으며, 충동성과 자살행동은 유의미한 정적 상관이 있는 것으로 나타났다. 셋째, 초등학생의 충동성이 자살행동에 미치는 영향에 보호요인 모두 조절효과가 있는 것으로 나타났다. 즉 충동적인 초등학생이라도 보호요인이 높을수록 낮은 자살행동을 보인다는 것이다. 이렇듯 보호요인은 초등학생의 충동성에 따른 자살행동에 대한 완충제로 작용하기 때문에 이를 강화하기 위한 다차원적인 노력이 필요함에 대하여 논의하였다.

• 한국학교ㆍ지역보건교육학회지
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• 제15권3호
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• pp.67-80
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• 2014

Objectives: This study is aimed to analyze the influential factors on the fear that college students and elderly people feel during the dental treatment and provide basic data needed to develop a plan which can lead them to have a positive perspective on dentistry. Methods: A questionnaire was distributed to 241 outpatients (39 college students, 202 elderly people) visiting dental clinic of 'K' University Hospital in Seoul from January to April, 2013. It was filled in a self-administered manner and collected right away. Results: factor analysis, three factors were configured when the factors with 1.0 or higher of eigenvalue were extracted using 19 questions through which dental fear and anxiety were measured against college students and elderly people. The questionnaires were classified into three categories: Factor I (stimulus response), Factor II (avoidance of the treatment) and Factor III (physiological response which occurs when a patient feels fear). As a result, it was confirmed that the questionnaire tool is highly feasible. In college students, the responses they felt during the dental treatment in the said three factors were as follows: 52.00% in Factor II, 14.14% in Factor II and 6.99% in Factor III (73.129% in total). In elderly people, on the contrary, they were 52.41% in Factor I, 10.57% in Factor II and 7.98% in Factor III (70.958% in total), lower than the college student group. Conclusions: This study is significant in that it confirmed complex relations between dental fear and related variables against college students and elderly people.

• Journal of Mechanical Science and Technology
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• 제16권2호
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• pp.182-191
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• 2002

The reliable stress intensity factor analysis is required for fracture mechanics design or safety evaluation of mechanical joints at which cracks often initiate and grow. It has been reported that cracks in mechanical joints usually nucleate as corner cracks at the faying surface of joints and grow as elliptical arc through cracks. In this paper, three dimensional finite element analyses are performed for elliptical arc through cracks in mechanical joints. Thereafter stress intensity factors along elliptical crack front including two surface points are determined by the virtual crack closure technique. Virtual crack closure technique is a method to calculate stress intensity factor using the finite element analysis and can be applied to non-orthogonal mesh. As a result, the effects of clearance on the stress intensity factor are investigated and crack shape are then predicted.