• Journal of the Korea institute for structural maintenance and inspection
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• v.7 no.2
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• pp.159-167
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• 2003

Cracks in reinforced concrete structures reduce overall durability by allowing the penetration of water and aggressive agents, thereby accelerating the deterioration of the reinforcing steel. Highway pavement and bridge decks are especially susceptible to this type of deterioration since these structures exhibit high rates of shrinkage and are frequently exposed to aggressive environmental conditions. The objectives of this investigation included the development of experimental procedures for assessing shrinkage cracking potential of recycled aggregate concrete, the evaluation of mix composition on shrinkage cracking potential, and the development of theoretical models to simulate early-age cracking behavior. Specifically, the influences of shrinkage-reducing admixture(SRA) and recycled aggregate concrete were investigated. The shrinkage-reducing admixture substantially reduces free shrinkage and restrains shrinkage cracking while providing similar mechanical properties. A fracture mechanics modeling approach was developed to predict the behavior of a variety of restrained concrete specimens. This modeling approach was used to successfully explain experimental results from a variety of mixture compositions. The model was used to demonstrate the influence of material and structural properties on the potential for cracking.

• The Korean Journal of Cytopathology
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• v.18 no.1
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• pp.62-68
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• 2007

Invasive micropapillary carcinoma (IMPC) of the breast is recently described rare variant of invasive ductal carcinoma. This variant has a distinctive histological features and aggressive biological behavior. We reviewed the cytologic features of eight cases of IMPC. The cytologic smears showed moderate to high cellularity and the tumor tissue was composed of atypical, angulated, cohesive clusters of neoplastic cells with a papillary to tubuloalveolar architecture, and a morular growth pattern without fibrovascular cores was seen on the histopathology. IMPC of the breast has distinctive cytologic features and it is important to make an early diagnosis via fine needle aspiration cytology due to this tumor's aggressive behavior.

• Journal of the Korean Home Economics Association
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• v.36 no.8
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• pp.21-37
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• 1998

The purpose of this study was to review the importance of authoritative parenting for children's social adjustment. From the review it was suggested that the importance of authoritative parenting might be different according to the cultural contexts, which are Western and Asian cultures, and aggressive and social withdrawal behaviors. From the comparative cultural viewpoint, authoritarian parenting is not considered negatively by Asian parents, comparing with Western parents. Therefore the assumption that authoritative parenting has universal positiveness and authoritarian parenting has universal negativeness should be reconsidered. Regardless of cultures, children's aggressive behavior was related to the authoritarian parenting positively. But, in Asia, especially in China, the social withdrawal did not show at least negative relation with authoritative parenting. And it was reported that the authoritarian parenting could contribute to the change of inhibited behavior and enhancing the social adjustment. In addition, some implications were suggested for future researches about the relation between children's social adjustment and child rearing practices. Though this literature review was not exclusively based on the empirical studies, it would be valuable for reconsidering the perspective of Korean developmentalists interested in the relation between parenting and children's development in Korean culture.

• Journal of Music and Human Behavior
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• v.2 no.2
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• pp.33-56
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• 2005

The purpose of this study is to measure the effect of musical activities on children's aggressiveness using percussion playing through case studies and to present the therapeutic programs. Musical activities using percussion playing were organized for three aggressive children. Twenty-one small group sessions were conducted over seven weeks with 30 minutes given each session. Fourth-grade children involved in using Aggressiveness Measuring Tool for Teachers-revised by Gwak Geum-Joo(1992) was selected for case studies. Children's impulsiveness was also tested through self-test measuring tool for impulsiveness-revision of 16 questions used by Cho Hae Yeon (2001) and Lee Joo Shik (2003). As quantitative method, comparative analysis was made between the pre and post test results using measuring tools for aggressiveness and impulsiveness of children as well as between aggressive behaviors occurring in the initial stage of the first three sessions and in the latter stage of the last three sessions. Qualitative method was used at the same time to examine the effect of percussion playing on children. After the musical activities, child A showed reduced Aggressive Measuring Tool scores from 19 to 18, with child B from 23 to 19 and child C from 21 to 18. The results show that occurrence of aggressive behaviors were lowered in the post test. Impulsiveness Measuring Tool scores in the post test were decreased as well in all three children. During the music therapy programs, it was also observed that the frequency of the target behaviors in all three children has reduced more in the latter stage than the initial stage of music therapy. The qualitative findings indicate that the children experienced releasing stress through self-expression after percussion playing. These findings indicate therapeutic effectiveness of music therapy using on percussion playing in reducing aggressiveness of children as well as the effectiveness of percussion as a therapeutic intervention for aggressive children. These results can be adapted and reapplied by teachers in primary schools to approach children with behavior problems, and can present a useful therapeutic approach to therapists practicing in clinical environments.

• 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.

• 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.31 no.2
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• pp.127-139
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• 1993

The purpose of this study was to examine the conflict expression behaviors of the steady dating among the college students. The major findings were as follows: 1. When students had a conflict or disagreement with the partner, they who took only the Moderate Behavior were 5.5%, the Impolite Behavior were 26.7%, the Aggressive Behavior were 36.0%, and the Violent Behavior were 24.7%. 2. The conflict expression behaviors were associated with experiencing parental marital violence and attitude toward violence. 3. The violent Behavior occurred somewhat in the intimate relationships and was defined“expressing love”or“contingent mistake”among the dating partners. Thus after conflict incidence, most of the dating relationships were continued.

• Journal of the Korean Home Economics Association
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• v.41 no.4
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• pp.85-100
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• 2003

Maternal beliefs about preschoolers' displays of aggression and social withdrawal and the extent to which their strategies for dealing with these behaviors can be predicted from beliefs were examined. And the extent to which maternal childrearing behavior and preschoolers' social problematic behaviors can be predicted from beliefs. 202 mothers of 5-year-old(114 boys; 88 girls) were presented with descriptions of hypothetical incidents of peer-directed aggression and social withdrawal. Maternal beliefs were different according to kinds of problematic behaviors. Thus most mothers attributed preschoolers' aggression to situational factors, social withdrawal to disposition. Mothers felt embarrassed about aggression and concerned about social withdrawal. The power assertive strategies were more used for dealing with aggression than social withdrawal. The choice of strategies for dealing with these behaviors and maternal childrearing behavior were related to maternal beliefs. Also preschoolers' social problematic behaviors were effected from maternal beliefs and childrearing behavior.

• Journal of Fashion Business
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• v.18 no.1
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• pp.182-198
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• 2014

The main purposes of this study is to evaluate clothing behaviors according to cosmetic surgery parts and to research how the clothing style preference is expressed depending on each clothing behavior group. This study focuses on women in their 20s and 30s living in Seoul and Gyeonggi area whom have cosmetic surgery experiences. From the women being evaluated, the following groups are divided and then surveyed with equal frequency and ratio: 'facial surgery', 'face contour surgery', 'breast surgery', and 'body figure revision'. When comparing the changes in clothing style preferences before and after the cosmetic surgery, they prefer silhouettes which show body shapes, diversity of color tones, and more overall exposing preferences. After investigating the preferred clothing styles based on cosmetic surgery parts, it is being analyzed that body exposure is more aggressively expressed upon after taking the surgery because the self satisfaction is increased according to the changes in their body shapes after the surgery. Lastly, after looking into the cosmetic surgery and the clothing preferences styles of each clothing behavior group, there seems to be more breast surgeries and body figure revisions for aggressive and extroverted characters: the sex-appeal and mood switching type. It is also being analyzed that facial surgeries are more common in the passive group: information collection, trend alignment, and beauty preference. Such results are also reflected in clothing preferences styles: the biggest change is shown in the aggressive and extroverted group, the sex-appeal types.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.50 no.6
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• pp.799-805
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• 2017

The whistle sounds of three Beluga whales Delphinapterus leucas were recorded four times, for an hour each time, in 2016 and analyzed to obtain the most stable and basic acoustic characteristics of the whales in captivity. This study investigated the whistle characteristics of beluga whales and the relationship between whistle sounds and behavior to understand the meaning of the whistle sounds. The whistles were classified into six types (flat, ascending, descending, hump, dip, and wavy type) by their frequency contour and shape. The most common type was the ascending type, accounting for>30% of total whistles. The fundamental frequency of whistles was 2.0-8.6 kHz. Four types of behavior were related with the sounds of beluga whales (aggressive, submissive, affiliative, sexual behavior). A flat whistle was the most recorded in the group and an aggressive act was observed in association with the flat whistle. A dip whistle were recorded more when submissive acts were observed.