• Steel and Composite Structures
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• v.33 no.3
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• pp.357-373
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• 2019

Steel storage racks are slender structures whose overall behavior and the capacity depend largely on the flexural behavior of the base-plate to upright connections and on the behavior of beam-to-column connections. The base-plate upright connection assembly details, anchor bolt position in particular, associated with the high-rise steel storage racks differ from those of normal height steel storage racks. Since flexural behavior of high-rise rack base connection is hitherto unavailable, this investigation experimentally establishes the flexural behavior of base-plate upright connections of high-rise steel storage racks. This investigation used an enhanced test setup and considered nine groups of three identical tests to investigate the influence of factors such as axial load, base plate thickness, anchor bolt size, bracket length, and upright thickness. The test observations show that the base-plate assembly may significantly influence the overall behavior of such connections. A rigid plate analytical model and an elastic plate analytical model for the overall rotations stiffness of base-plate upright connections with concentric anchor bolts were constructed, and were found to give better predictions of the initial stiffness of such connections. Analytical model based parametric studies highlight and quantify the interplay of components and provide a means for efficient maximization of overall rotational stiffness of concentrically anchor bolted high-rise rack base-plate upright connections.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.35 no.5
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• pp.125-132
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• 2019

Ultra-high performance concrete (UHPC) has high compressive and tensile strengths due to the particle packing, and its ductile behavior can be ensured by utilizing steel fibers. However, since the UHPC members exhibit different characteristics of crack behavior and tensile behavior from normal concrete, the tension stiffening and cracking characteristics of the UHPC should be accurately modeled for the design and analysis of the UHPC members. In this study, uniaxial tension tests was conducted on the UHPC members with strands, where the test variables were diameter and reinforcing ratio of strands. Detailed analyses were also conducted to identify the tensile characteristics and crack behavior of the UHPC members. By comparing the test results with current code provisions and other models proposed by existing researchers, their applicability for estimation of crack behavior of the UHPC members was examined.

• Journal of the Korea Fashion and Costume Design Association
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• v.23 no.4
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• pp.81-93
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• 2021

This study attempted to investigate the mediating effects of self-efficacy in the influence of appearance management behavior and life satisfaction among middle-aged women. For this, a questionnaire survey was performed among 153 women aged 40-59 living in Seoul and Gyeonggi-do. The collected data were analyzed by frequency analysis, cross-tabulation analysis, t-test, ANOVA, Duncan's test, reliability analysis, and correlation analysis, using SPSS 25.0. To examine mediating effects, SPSS Process MACRO #4 was borrowed, and the results found the following: 1) A positive correlation with statistical significance was observed among appearance management behavior, self-efficacy, and life satisfaction. 2) According to the analysis of appearance management behavior, self-efficacy and life satisfaction by demographic characteristics, some differences were found. 3) The mediating effects of self-efficacy in appearance management behavior and the life satisfaction relationship was confirmed. The above results show that middle-aged women experience an increase in self-efficacy through appearance management behavior and improvements in their life satisfaction through such self-efficacy, not just enhancing life satisfaction through appearance management behavior. In other words, appearance management increases life satisfaction through an ego-discovery process.

• Korean Journal of Child Studies
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• v.29 no.5
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• pp.51-63
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• 2008

The purpose of this research was to develop an scale to measure mathematics anxiety coping behavior of elementary school children. Of the first 45 items selected from a review of literature, 33 items were selected by content validation, modification and revision. Validity, reliability, and item discrimination was based in responses of 1,831 subjects. Data were analyzed by factor analysis, correlation, Cronbach's, $\alpha$, mean, standard deviation, percentages, and t-test. The resulting Scale of Children's Mathematics Anxiety Coping Behavior consisted of 26 items with 5 factors : active problem-solving, aggressive emotion expression, aversive coping, passive coping, and seeking social support. Cronbach's $\alpha$ ranged from .67 to .86 for five factors. T-test showed the 26 items of the scale to be discriminant.

• Journal of the Korean Home Economics Association
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• v.44 no.8
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• pp.117-126
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• 2006

The purposes of this study were to examine the factors affecting the avatar addictive buying behavior. The survey subjects were 220 females and males who had purchased avatar items in the internet. For data analysis, descriptive statistics, factor analysis, t-test and regression analysis were used. In the results, first, the frequency test of quantity of owned items, payment method, main using site, frequency of purchase, and price of purchase was conducted to reveal the avatar addictive buying behavior. Second, the avatar addictive buying behavior was classified into three factors: conspicuous addictive, psychological addictive and habitual addictive. Also, the pursuit of pleasure was classified into three factors: superiority, pastime and enjoyment. Third, flow, vicarious satisfaction, stress, superiority and pastime affected avatar addictive buying behavior. Based on these results, fashion marketing strategies and implications regarding avatar addictive buying were suggested.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.37 no.5
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• pp.433-439
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• 2004

The movement range and diurnal behavior of red seabream (Chrysophrys major) tagged by the ultrasonic pinger externally were measured by acoustic telemetry techniques in the marine ranch of Tongyeong on 20 March to 30 October, 2003. The movement of fishes was monitored with the radio-acoustic linked positioning (RAP) buoy system and VR2 receivers. The test fishes showed behavior. pattern going to deep waters and returning to shallow waters. They moved gradually to deep waters as time goes by. They had a tendency to move wider range in night-time than day-time. It was found that the test fishes rarely showed a significant response to the artificial reefs.

• The Journal of Korean Society for School & Community Health Education
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• v.13 no.2
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• pp.45-58
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• 2012

Purpose: The study was done to identify health behavior for cancer prevention in university students according to characteristics of the university students and other factors affecting health behavior for cancer prevention and to provide data to set up a strategy to reduce the cancer. Methods: Data were collected by questionnaires from 353 university students in G city. To analyze the sample survey data, descriptive statistics, t-test, ANOVA, Scheffe's test, and multiple regression analysis were performed with SPSS/WIN 15.0. Results: Significant factors that affect health behaviors for cancer prevention in university students were perception of health status, knowledge and attitudes about cancer, and smoking. These variables explained 21% of health behaviors for cancer prevention. Conclusion: The results of this study indicate that in order to improve the health behavior for cancer prevention in university students it is important to development health education programs that focus on positive perception of health status. This development could be enhanced with structured and on-going education about cancer.

• Korean Journal of Health Education and Promotion
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• v.30 no.3
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• pp.25-34
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• 2013

Objectives: The main purpose of this study was to examine factors influencing school bullying victimization of middle school students in relation to social support, self-esteem, stress coping behavior, and health status. Methods: The questionnaire survey was carried out on a convenience sample of 441 middle school students. The data analysis procedure included frequency, ${\chi}^2$-test, t-test, and multiple logistic regression. Results: It was found that 18% of the subjects were bullied by other students. Multiple logistic regression analysis revealed that the factors such as sex(OR=2.35, p=.006), aggressive coping behavior(OR=1.18, p=.028), and health status(OR=1.04, p=.002) were significant affecting factors. Conclusions: The findings suggest that to prevent middle school students' bullying victimization, it is necessary to design intervention programs that considering their health status and stress coping behavior.

• Journal of the Korean Home Economics Association
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• v.39 no.4
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• pp.79-89
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• 2001

This study investigated institutionalized children's behavior problems depending on their family networks. Subjects were 250 institutionalized children in 15 child-welfare facilities in Seoul(132 preschooler, 55 first and 63 second grade children; 144 boys and 106 girls). Data were analyzed with t-test, ANOVA, and Duncan test. Measures of behavior problems included internalizing (anxiety, immaturity, withdrawal, physical symptom) and externalizing behavior problems (hyperactivity, aggression). Results showed that institutionalized children having parents were higher in internalizing problems than children not having parents, while children living with siblings in the facilities were lower in externalizing problems than children living without siblings. Furthermore, institutionalized children having parents and living without siblings were higher in both internalizing and externalizing problems than children not having parents and living with siblings.

• Journal of the Korean Home Economics Association
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• v.28 no.2
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• pp.107-118
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• 1990

The purposes of this study are to investigate the children's prosocial behavior as related to (1) their perception of parental warmth, control and the relationship of this perception to parent's job status and educational level (2) their siblings (3) children's sex. The subjects were 220 third grade children selected from four elementary schools in Seoul. The instruments were a perception of parental warmth and control scale and a peer rating prosocial behavior scale. Frequencies, percentiles, mean, Pearson's correlation, t-test oneway ANOVA, and Scheffe test were used for data analysis. The major findings are as follows; 1. There were significant relationships between parental warmth, control, and children' s prosocial behavior. The children who perceived more parental warmth and control were rated more prosocial by their peers. 2. Children whose parent's were above college graduates and white collar jobs perceived more parental warmth and control. 3. Children's prosocial behavior were significantly different according ti sibling number, birth-order, and sibling structure. 4. Girls were rated more prosocial than boys.