• Publications of The Korean Astronomical Society
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• v.4 no.1
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• pp.1-15
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• 1989

A jet plasmoid model for 3C.449 has been constructed by introducing a plasma.ejecting black hole orbiting around the center of its parent cD galaxy. We examined the characteristics of the jet trajectory by varying the values of (1) orbiting radius and velocity of the black hole, (2) plasma ejection velocity, (3) size, mass and space velocity of the parent galaxy, (4) size of the galactic core and (5) the density of the intergalactic medium. In our model calculation the effect of the gravity by the parent galaxy and the ram pressure by the intergalactic medium have been taken in account. It is found that our dynamical model accounts reasonably well for the observed structure of 3C449. Our proposed model suggests that the buoyancy force near the galactic center plays an important role in the formation of the curved structure of the radio jet.

• Journal of the Korean Home Economics Association
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• v.47 no.8
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• pp.119-130
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• 2009

The purpose of this study was to investigate the interaction and effects of shame and parent-child communication on children and early adolescents' peer pressure. The subjects of this study were 359 children and early adolescents from 5th grade in elementary school to 2nd grade in middle school (187 boys, and 172 girls) in Daejeon city. The results of this research indicated that gender and age played a significant role on the effects of shame and parent-child communication on peer pressure. Open communication with mothers showed a positive relationship with boys' peer pressure, whereas open communication with father showed a negative relationship with boys' peer pressure. The interaction effects of shame and open-communication with fathers and mothers worked differently on peer pressure across gender and age. Interaction effects of shame and open communication with fathers and mothers were significant for boys, but not for girls. Interaction effect of shame and open communication with mothers was significant for children and adolescents.

• Journal of the Korea Society of Computer and Information
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• v.24 no.1
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• pp.225-230
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• 2019

The purpose of this study is to provide basic data that mother's smart phone overdependence prevention education are needed by confirming the relationship between mother' s smartphone overdependence and parent role intelligence. The research subjects were 220 mothers of 0-2 years old who are attending 15 day care centers in Cheong-ju, Chung-buk. The research tool used smartphone overdependence scale, and parent role intelligence scale. For the analysis of the study, frequency analysis, Pearson's Ratio correlation and regression analysis were performed. The results showed that mother's smartphone overdependence was negatively correlated with parental role intelligence and negatively correlated with developmental stimulation, parenting, support, and management. The multiple regression analysis showed that there was a significant negative effect on the smartphone overdependency, parent role intelligence, and sub factors. This suggests that smartphone overdependence prevention education for mother should be needed for nurturing of desirable infants.

• Journal of Korea Trade
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• v.23 no.5
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• pp.1-26
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• 2019

Purpose - We examine the disclosures on foreign divestment from China by 77 Korean firms between 2007 and 2016 to identify the effects (and their determinants) on parent firm value. Design/methodology - We analyze how divestment affects firm value by examining the disclosure of divestment from China by Korean firms. Then, we examine the determinants of these disclosure effects using cross-sectional regression analyses. Findings - We find negative effects on parent firm value in the short and medium term, and both the KOSPI and KOSDAQ stock markets show negative correlations between foreign divestment and firm value. The parent firm's financial condition and profitability and the reason for divesting are statistically significant determinants. Practical implications - Most Korean firms in China belong to the manufacturing industry. As a result, divestment signifies a loss of important manufacturing bases and assets. Originality/value - We analyze foreign direct divestment, which has not been studied in detail previously owing to a lack of data. In addition, this research is the first to compare the disclosure effects in the KOSPI market with those in the KOSDAQ market for the same period.

• Korean Journal of Social Welfare
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• v.43
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• pp.246-269
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• 2000

This paper describes the results from a prevention program for low-income mothers of children under the age of 13 aiming at the positive change on parental attitudes toward their children, parenting satisfaction and attitudes toward the use of corporal punishment. The program duration was 8 weeks and consisted of two parts: parent education on understanding parent-child relationship, communication skill improvement, techniques of problem solving, non-punitive child rearing techniques; and the recognition and use of existing social support network including networking of the neighborhood resources. The pre-post test control group design was employed. The results are: the program is effective on bringing some positive changes on an three variables: parental attitudes toward their children, parenting satisfaction and attitudes toward the use of corporal punishment. Increased social support was found to have significant positive effect on the above variables except the attitudes toward corporal punishment. To decrease the risk factors as well as to increase the protective factors of child abuse, well designed parent education and social support program is recommended on every community level.

• Journal of the Korean Society for Library and Information Science
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• v.47 no.1
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• pp.149-173
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• 2013

The attitudes and interests of parents toward having better interrelationships with their children will have the greatest positive impact on the mental health of a growing child. The purpose of this study is to elicit how to effectively use bibliotherapy to promote interaction between parents and children. Based on action research methods, and in order to achieve the research objectives, the parent-child bibliotherapy target program was divided into two "lanes" and a total of 25 iterations were performed or observed for every process in detail and with different technologies. According to the result, the bibliotherapy helps improve parent-child interaction.

• Journal of the Korean Home Economics Association
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• v.43 no.10 s.212
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• pp.103-114
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• 2005

This study analyzed the effect of parent-child communication and peer relationship on children's internet addiction. The subjects were 642 elementary school students living in Daejeon city. Cronbach's $\alpha$, t-test, ANOVA, and Duncan's test were employed in analyzing the data by using SPSS 10.0. The findings of this study were as follows First, the boys were more addicted to internet use than the girls, as were the children of less educated parents. The children of parents with professional careers were less addicted to the internet. The children who perceived their school achievements as low were more addicted to the internet. Second, the children who spent more time daily, longer time at once and more frequently per weekly internet use were more addicted. Third, internet addiction was influenced tv parent-child communication and peer relationship. Boys who had more problem communications with their parents less open communication with their mother and a lower level of peer support were more addicted to the internet. The problem of communication with their mother and conflict in their peer relationship had more influence on the internet addiction of girls.

• Korean Journal of Child Studies
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• v.31 no.1
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• pp.65-82
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• 2010

This study investigated the longitudinal effects of family risk factors, parent-child relationships, and language abilities of children in low-income families in terms of both school adjustment and academic performance. The subjects were 176 children aged 5 to 7 and their mothers. They participated in follow up studies over the next 3 years. The children were tested using the Wechsler Intelligence Scales and language tests; and classroom teachers rated their levels of both school adjustment and academic performance. Mothers reported parent-child relationships, maternal depression, and family economic resources. Data were analyzed using Pearson's correlation, and structural equation modeling (SEM). Our results indicated that there were direct effects of language abilities, and indirect effects of parent-child relationships and maternal depression upon children's school adjustment and academic performance. It was also revealed that language abilities had a mediating effect between parent-child relationship and school adjustment/ academic performance.

• Child Health Nursing Research
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• v.14 no.4
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• pp.405-414
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• 2008

Purpose: The purpose of this study was to examine the effect of parent- adolescent communication on self-concept and problem behavior of adolescents. Method: The participants in this study were 480 students from middle schools in Daejeon City. Data were collected from May 19 to 30, 2008 and analyzed using SPSS WIN 14.0 version. Result: The mean scores for communication with fathers and mothers were 2.98 and 3.35 respectively and for self-concept, 2.80. The highest reported percentage for problem behavior over the past year were going to the noraebang (Karoki) or videobang (PC Cafe) (78.6%). Significant differences were found for the influence of parent-adolescent communication on self-concept and problem behavior. Communication with fathers and with mothers was positive correlated (r=.365, p<.001). The difference in self-concept for communication with fathers was F=60.40, p<.001, and with mothers, F=51.74, p<.001 and for problem behavior, for communication with fathers, F=3.33, p<.05, and with mothers, F=10.05, p<.001. For self-concept and communication with fathers the correlation was r=.512, p<.001, with mothers, r=.453, p<.001 There was a negative correlation between self-concept and problem behavior(r=-.248, p<.001). Conclusion: This results suggest that practical parent-adolescent communication programs should be developed and applied to bolster communication of adolescents with their parents.

• Journal of Family Resource Management and Policy Review
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• v.18 no.3
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• pp.103-116
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• 2014

The purpose of this study is to examine the influence of family mealtime on the childrens' school adaptation. This study uses data from the 2012 Survey on Child Education and School Involvement of Parents by the Center for Family-School Partnership Policy Research at Seoul National University. Survey data was collected from 1500 parents with school-aged children. For the data analysis, Chi sqaure test and hierarchical linear regression analyses were conducted. The results of these analyses showed that the numbers of family meals shared averaged 4.26 times per week for breakfast and 4.33 times per week for dinner. There were significant differences in the number of family meals shared together according to school level, residence area, and parent employment status, and household income. In addition, childrens' school adaptation was significantly different depending on school level, parent gender, parent education, and parent employment status. Finally, according to the hierarchical regression analyses, the number of family meals shared significantly predicted childrens' school adaptation. The greater number of family meals shared, the stronger the childrens' school adaptation. These results indicate that family mealtime has a positive effect on childrens' school adaptation. This study suggests that family mealtime is an indicator of family strength and it needs to guarantee family shared time at least to have a dinner together. This study could provide grounds for making family policy and education policy in order to guarantee family shared time.