• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.4
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• pp.29-37
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• 2013

Multiplayer games typically organized based on a client-server(CS) or peer-to-peer(PP) architecture. The CS architecture is not scalable with the number of players due to a large bandwidth requirement at the server. The PP architecture, on the other hand, introduces significant overhead for the players, as each player needs to check the consistency between its local state and the state of all other players. We then propose a method that combines the merits of CS and PP. In this method, players exchange updates with lower priority in a peer-to-peer manner but communicate directly with a central server for the other updates. As a result, the proposed method has a lower network bandwidth requirement than the server of a CS architecture and the server bandwidth bottleneck is removed. For another important issue about multiplayer games, this method always maintains state consistency among players correctly. The performance of this method is evaluated through extensive simulation experiments and analysis.

• Human Ecology Research
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• v.52 no.4
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• pp.395-403
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• 2014

The purpose of this study was to analyze the effects of children's self-esteem on their school adjustment, focusing on the mediation of peer attachment. A total of 2,200 3rd grade children from the third Korea Child-Adolescent Panel Survey participated in this study. The instruments used in this study were the Self-esteem Scale, Peer Attachment Scale, and School Adjustment Scale. The collected data were analyzed by using a Student's t -test, Pearson's partial correlation, simple regression, and hierarchical multiple regression with SPSS ver. 16.0 software. The main results of this study are as follows: first, the boys had higher self-esteem, peer attachment, and school adjustment scores than the girls. Second, there was a significant positive correlation between children's self-esteem and peer attachment as well as a significant positive correlation between children's self-esteem and school adjustment. Further, there was a significant positive correlation between children's peer attachment and school adjustment. Finally, children's self-esteem exerted positive effects on their peer attachment, and children's peer attachment had a positive influence on their school adjustment. The effect of children's self-esteem on their school adjustment was partially mediated by their peer attachment. These findings provide preliminary evidence that the relationships between children's self-esteem and school adjustment may be mediated by their peer attachment.

• Korean Journal of Childcare and Education
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• v.14 no.1
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• pp.249-268
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• 2018

Objective: The purpose of this study was to examine the effects of preschooler's temperament on peer play activity, focusing on the mediation of mothers' social interaction parenting behaviors Methods: 1695 mothers of preschoolers completed questionnaires on children's temperament and peer play behaviors, and mothers' parenting behaviors. Data were analyzed by regression analyses by SPSS 18.0. Results: First, preschoolers' sociability exerted positive effects on good peer play behaviors(play interaction) and negative effects on the bad peer play behaviors (disruption, disconnection) and both were partially mediated by mothers' social interaction parenting behaviors. Second, preschoolers' emotionality exerted negative effects on good peer play behaviors and positive effects on the bad peer play behaviors and both were partially mediated by mothers' social interaction parenting behaviors. Preschoolers' activity exerted positive effects on good peer play behaviors and negative effects on the bad peer play behaviors and both were partially mediated by mothers' social interaction parenting behaviors. Conclusion/Implications: These findings provide preliminary evidence that mothers' social interaction parenting behavior partially mediate the effects of preschoolers' temperament on peer play behaviors. Implications for the use of intervention targeting specific temperament have been discussed.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39B no.12
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• pp.870-872
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• 2014

In this paper, we devise a cost function by considering the energy consumption rate and the remaining energy of a peer. Then, we propose a parent peer selection method that chooses the least cost peer in the system in a distributed manner. On the contrary to the conventional method that makes each peer select the least cost neighbor as a parent peer, the proposed method chooses a parent peer using the swarm intelligence formed among a set of peers. Therefore, the proposed method could extent distributedly the number of peers searched for parent peer selection. Thus, compared to the conventional method, the proposed method increases the probability of being a parent peer as the cost of a peer becomes smaller with less operational load.

• The Korean Journal of Community Living Science
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• v.19 no.4
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• pp.685-695
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• 2008

This study was to find out the effect of child-parent and child-peer attachment levels on the quality of the child's friendship. Participants were 355 fifth and sixth graders of three elementary schools in Jeolabukdo. The questionnaire used for this study were Inventory of Parent and Peer Attachment(IPPA) and Quality of Friendship Scale. The t-test and the regression-analysis were used for this study. According to the result, when the father attachment was higher and safer, the child's friendship was functioning more positively. However, there wasn't any meaningful relationship between the security of mother attachment and the quality of the child's friendship. When peer attachment level was higher and safer, the quality of the child's friendship was significantly higher. On the other hand, there was meaningful relationship between the security of parent attachment and peer attachment. On relationships among parent attachment, peer attachment, and the quality of the child's friendship, effects of secure father attachment and secure peer attachment were functioning meaningfully on the quality of the child's friendship. Secure peer attachment was the most effective factor functioning positively on the quality of the child's friendship among those three factors, child-parent attachment, peer attachment, and the quality of the child's friendship.

• Human Ecology Research
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• v.51 no.6
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• pp.583-590
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• 2013

The purpose of this study was to examine the effects of parental abuse and neglect, as well as that of children's peer attachment, on mobile phone dependency. Data were obtained from the Korean Child-Youth Panel Survey (KCYPS), and the participants were 1,892 (909 boys, 983 girls) elementary students (5th graders) who had a mobile phone. To measure the variables, this study used such scales as the parental abuse and neglect scale, peer attachment scale, and mobile phone dependency scale. The data were analyzed using descriptive statistics, Pearson's correlation, and structural equation modeling analysis. The results of the study were as follows: First, parental abuse and neglect had direct negative effects on children's peer attachment; that is, the more parental abuse and neglect, the less children's peer attachment. Second, parental abuse and neglect had direct positive effects on mobile phone dependency; that is, the more parental abuse and neglect, the greater children's mobile phone dependency. However, children's peer attachment did not directly affect mobile phone dependency; that is, children's peer attachment did not have a mediating effect between parental abuse and neglect, and mobile phone dependency. In conclusion, parental abuse and neglect influence children's peer attachment and mobile phone dependency. Thus this study showed that parental abuse and neglect, rather than children's peer attachment, affect children's mobile phone dependency.

• Journal of Fisheries and Marine Sciences Education
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• v.24 no.6
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• pp.793-805
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• 2012

This study investigated the influence of mother and peer attachment on conflict resolution strategies of children. Following research questions were established. First, what is the influence of mother and peer attachment on conflict resolution strategies of children? Second, does the influence of mother and peer attachment on conflict resolution strategies of children differ according to sex? Third, what is the relative influence of mother and peer attachment on conflict resolution strategies of children? 485 fifth graders(male, 184; female, 163) from elementary schools located in Busan participated in this study and completed Inventory of Parent and Peer Attachment and Conflict Resolution Strategies Scale. Collected data were analyzed using t-test, Pearson Correlation Coefficient, Simple Regression and Multiple Regression Analysis. Major findings of this study were summarized as follows: First, both mother and peer attachment influenced on compromising and integration, avoiding and obliging strategies although the degree of influence were different. Second, the influence of mother and peer attachment on conflict resolution strategies differ according to gender. Third, the influence of peer attachment on conflict resolution strategies were greater than the one of mother attachment. Finally the significance of this study were presented with comments on limitations of this study.

• Journal of Child Welfare and Development
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• v.16 no.2
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• pp.109-135
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• 2018

The purpose of this study was to analyze the longitudinal causal relationship between caregiver relations and peer relations of children in out-of-home care. We analyzed the three years(2011-2013) of longitudinal data from the Panel Study on Korean Children in Out-of-Home Care. The autoregressive cross-lagged model (ARCL) was used to measure the longitudinal causal relationship between caregiver relations and peer relations. As a result, first, caregiver relations and peer relations showed stability over time. In other words, the results of the measurement at three time points showed that the caregiver relations and peer relations at the previous time had a significant effect on the caregiver relations and peer relations at the later time point. Second, the previous caregiver relations had a significant effect on the subsequent peer relations over time. Third, the previous peer relations had a significant effect on the subsequent caregiver relations over time. This study confirmed the interrelationships of caregiver relations and peer relations of children in care by examining the longitudinal data using the longitudinal analysis method.

• Korean Journal of Human Ecology
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• v.21 no.5
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• pp.915-927
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• 2012

The purpose of this study was to examine the mediation effect of peer attachment on the relationship between children's depression and mother attachment. The respondents in this study were 697 school aged children attending elementary schools in Daegu and Gyeongbuk Province. Questionnaires, which required self-reporting by children, were used to investigate mother attachment, peer attachment and depression. The collected data were analyzed by Structural Equation Modeling(SEM) and Sobel test using AMOS 8.0, and SPSS 15.0. The results of the study were as follows. Structural Equation Modeling(SEM) revealed that peer attachment partially mediated the relationship between mother attachment and depression. First, mother attachment had a direct effect on peer attachment. Second, peer attachment had a direct effect on depression. Third, mother attachment had an indirect effect on depression as a mediated effect of peer attachment.

• Journal of the Korean Home Economics Association
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• v.47 no.1
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• pp.93-103
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• 2009

This study analyzed variables associated with peer competence of negelcted children. Participants were made up of 180 preschoolers and their mothers. Neglected children's peer competence was measured by the Peer Competence Scale(Park & Rhee, 2001) and data were subjected to descriptive analysis, Pearson's correlation, and multiple regression analysis. Results showed that neglected children's peer competence was partly associated with the child's temperament and emotional regulation, parenting styles and involvement strategy, and teacher-child relationship. In particular, closeness in teacher-child relationship was the strongest predictor for both children's peer competence in leadership and sociability. Furthermore, a child's ability to regulate emotion was the strongest predictor of their peer competence in prosocial environments.