• 한국건설순환자원학회논문집
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• 제4권1호
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• pp.19-24
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• 2016

현재까지 하이볼륨 플라이애시 콘크리트의 연구는 슬럼프, 강도 및 내구성 등 기본적인 재 료성질에 대해서 주로 수행되어 왔다. 그러나 하이볼륨 플라이애시 콘크리트의 구조부재에의 적용을 위해서는 철근의 사용이 필수적이므로 그 부착특성에 대한 연구가 매우 중요하다고 할 수 있으나, 현재까지는 하이볼륨 플라이애시 콘크리트를 구조부재에 적용하기 위한 정확한 기준이나 콘크리트와 철근의 부착 특성에 관한 연구가 부족한 실정이다. 이 논문에서는 직접 인발 시험을 수행하여 하이볼륨 플라이애시 시멘트 콘크리트의 부착특성을 파악하고, 실험결과와 기존 연구결과를 비교하여 하이볼륨 플라이애시 시멘트 콘크리트의 부착특성을 평가하였다. 실험결과에 의하면, 하이볼륨 플라이애시 시멘트 콘크리트의 부착거동은 일반콘크리트와 유사하게 거동하는 것으로 나타났다. 또한 기존 연구결과와 비교하면, 하이볼륨 플라이애시 콘크리트의 부착강도는 묻힘길이가 클수록 부착강도를 과소평가하는 것으로 나타났다.

• Advances in Computational Design
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• 제7권4호
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• pp.281-295
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• 2022

Tensile property is one of the excellent properties of ultra-high performance concrete (UHPC), and uniaxial tensile test is an important and challenging mechanical performance test of UHPC. Traditional uniaxial tensile tests of concrete materials have inherent defects such as initial eccentricity, which often lead to cracks and failure in non-test zone, and affect the testing accuracy of tensile properties of materials. In this paper, an original integrated design scheme of mould and end fixture is proposed, which achieves seamless matching between the tension end of specimen and the test fixture, and minimizes the cumulative eccentricity caused by the difference in the matching between the tension end of specimen and the local stress concentration at the end. The stress analysis and optimization design are carried out by finite element method. The curve transition in the end of specimen is preferred compared to straight line transition. The rationality of the new integrated design is verified by uniaxial tensile test of strain hardening UHPC, in which the whole stress-strain curve was measured, including the elastic behavior before cracking,strain hardening behavior after cracking and strain softening behavior.

• 아동학회지
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• 제16권1호
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• pp.33-47
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• 1995

The purpose of this study was to examine the relationships and predictor variable between father's child-rearing behaviors and children's sex-role taking, emotional responses and children's prosocial behavior by demographic variables and mother's work status. Subjects were 142 kindergarten children and their mothers in Busan. Three type of measurement were used in this study; (1) Two scales for father's child-rearing behaviors and children's emotional responses, (2) an interview for children's sex-role taking, and (3) amount of candies to share with classmates for children's prosocial behavior. Data were analyzed by Pearson's correlation coefficient, t-test, F-test, multiple regression, Scheffe's post hoc test using the SAS computer program. There were significant correlations between father's child-rearing behaviors and children's sex-role taking, and between father's child-rearing behaviors and children's prosocial behavior. There were significant differences in father's child-rearing behaviors, children's emotional respones, and children prosocial behavior by SES and mother's job. Father's child-rearing behaviors were the most important predictor variables influencing children's sex-role taking and children's prosocial behavior.

• 복식
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• 제62권3호
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• pp.17-28
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• 2012

The purpose of this study was to investigate elderly women's body image and clothing behavior. Data were collected from 305 elderly women living in Gyeongnam province from May and June of 2011. Statistical methods including frequency analysis, factor analysis, F-test, t-test, Duncan test, Cronbach's ${\alpha}$, correlation analysis and multiple regression were used for this study. The results of this study were as follows.: The body image was composed of two factors, 'physical attractiveness and interest in appearance', and 'concern about weight'. The clothing behavior was composed of the following five factors: 'social importance', 'conformity' 'individuality' 'economic efficiency' and 'clothing fashion interest'. The body image and clothing behavior according to the elderly women' demographic showed many differences. Elderly women's body image influenced their clothing behavior. These study results are highly expected to be used as valuable sources in fashion marketing plans for industries that target elderly women.

• 한국강구조학회 논문집
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• 제14권2호
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• pp.357-364
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• 2002

스터드, 조이스트 및 지붕 트러스에 적용하기 위한 폐단면 냉간성형부재의 휨실험을 수행하고 해석치와 비교하여 보았다. 길이 2.4m, 폭 0.9m의 휨 시편은 46cm 간격의 두 개의 강재보의 한면에 석고보드와 합판을 부착한 시편과 부착하지 않은 시편으로 구성되었고, 각 시편에 대한 정, 부모멘트실험을 수행하여, 강재보에 부착된 합판 및 석고보드가 강재의 좌굴거동에 미치는 영향을 포함한 합성거동을 파악하였다. 또한 합판이 부착된 실물 트러스 실험을 통하여 트러스 부재의 좌굴거동 및 파괴양상에 대하여 연구하였다.

• Child Health Nursing Research
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• 제16권1호
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• pp.41-48
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• 2010

Purpose: The purpose of this study was to examine the relationship of body image, self-esteem, and behavior problems comparing children of short stature and children of normal height, and to enhance growth development through early detection of social or emotional problems in children of short stature. Methods: The data were collected from June 2 to September 25, 2008. The participants were 38 children who were diagnosed with short stature and their mothers and 38 children of age appropriate stature and their mothers selected from 311 elementary students in D city. The participants were matched by using propensity analysis for controlling confounding variables. Sapiro-Wilk test, t-test, Wilcoxon test, and Pearson correlation coefficients with SPSS/WIN 14.0 program were used to analyze the data. Results: There were significant differences in body image and behavior problems between children of short stature and children of age appropriate stature. There was no significant difference in self-esteem between the two groups. Positive correlation was found between body image and self-esteem. In children of age appropriate stature, a negative correlation was found between body image and behavior problems. Conclusion: A specialized program which focuses on behavior problems, body image, and self-esteem should be developed to help children of short stature in school-based settings.

• 한국철도학회논문집
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• 제4권4호
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• pp.131-137
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• 2001

The dynamic behavior of high speed train is very important because of its safety and passengers' ride comfort. The railway vehicle is composed of many suspension components, such as 1st springs, 1st dampers, 2nd springs and 2nd dampers, that have an influence on the dynamic characteristics of high speed train. Also, the wheel/rail shapes and the track geometry affect the dynamic behavior of high speed train. This paper reviews the dynamic behavior of KHST in the KTX test line. The VAMPIRE program is used for this simulation. The simulation results are within the limits of safety criteria. Thus the KHST can operate safely at 350 km/h in the KTX test line.

• 한국의류산업학회지
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• 제10권2호
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• pp.173-180
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• 2008

The purposes of this study are to investigate what star marketing is and to examine whether star marketing influences clothing purchase behavior of adolescents or not. The concept and the instances of star marketing were reviewed and the characteristics and clothing behavior of adolescence were analyzed. The data were obtained from questionnaires completed by 341 middle and high school students and analyzed by frequency, t-test, chi-square test, cluster analysis, ANOVA, and Scheffe test. The Cronbach's alphas were calculated for the internal consistency. The results of the study are as follows. The sample was classified into three groups(high interest/high awareness group, high interest/low awareness group, and low interest/low awareness group) by the interest of TV watching and TV stars, the identification with TV stars, and the awareness and the interest of star marketing. There were significant differences in clothing purchase motives, the use of information sources, clothing buying places, clothing purchase frequency, and clothing expenditure among three groups.

• 복식문화연구
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• 제9권6호
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• pp.807-817
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• 2001

The purpose of this study was to examine the consumer's importance of store attributes and store choice behavior according to the shopping orientations and gender. The data were collected via a questionnaire from students who were attending in Semyung University in Chechoen. The results were analyzed by factor analysis, Cronbach's alpha, cluster analysis, χ²-test, Duncan-test, ANOVA, t-test and multiple regression. The results of this study were as follows; 1 . According to the shopping orientations, consumers were classified into six groups. Each group differed in perferring store attributes and store choice behavior. 2. The significant differences were found in the importance of store attributes and shopping orientations according to the gender. 3. Additionally, importance of store attributes were affected by gender and shopping orientations.

• 한국의류산업학회지
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• 제4권1호
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• pp.40-46
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• 2002

The purpose of this study was to classify the clothing purchasing behavior of department store credit card users according to fashion lifestyle. The questionnaire was administrated to 346 female department store credit card users aged over 20 living in Daegu, Frequency factor analysis, cluster analysis, one-way Analysis of Variance (ANA), MANOVA, Scheffe test, ${\chi}^2$-test and t-test were used for satistical analysis. The consumers' lifestyle was classified by fashion oriented, practical and self conspicuous. The results showed that the credit card users' clothing purchasing behavior was different according to the fashion lifestyle. The self conspicuous group showed the highest score in impulse buying.