• 제목/요약/키워드: Peer to peer

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멀티플레이어 게임 서버 시스템의 규모조정을 위한 통신 대역폭 요건 감소 기법 (Reduction Method of Network Bandwidth Requirement for the Scalability of Multiplayer Game Server Systems)

  • 김진환
    • 한국인터넷방송통신학회논문지
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    • 제13권4호
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    • pp.29-37
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    • 2013
  • 전형적으로 멀티플레이어 게임은 클라이언트-서버 구조 혹은 peer-to-peer 구조를 기반으로 구성된다. 클라이언트-서버 구조는 플레이어의 수가 증가할 때 서버에서 대역폭 요건이 커지기 때문에 규모조정이 어렵다. 반면 peer-to-peer 구조는 각 플레이어마다 자신의 상태와 다른 모든 플레이어들의 상태 간의 일관성을 점검해야 하기 때문에 상당한 오버헤드가 수반된다. 본 논문에서는 두 구조의 장점을 결합하는 기법을 제시한다. 이 기법에서는 플레이어들이 우선순위가 낮은 갱신 작업은 peer-to-peer 방식으로 상호 교환하며 우선순위가 높은 갱신 작업에 대해서는 중앙 서버와 직접 통신하게 된다. 결과적으로 제시된 기법은 클라이언트-서버 구조 보다 통신 부하 요건이 감소되며 서버의 대역폭 병목 현상도 제거된다. 멀티플레이어 게임의 다른 중요한 사항인 플레이어 간의 상태 일관성도 이 기법에서 항상 정확히 유지된다. 제시된 기법의 성능은 분석과 다양한 실험을 통하여 평가되었다.

초등학생의 자아존중감이 학교생활적응에 미치는 영향: 또래애착의 매개효과를 중심으로 (The Effects of Children's Self-Esteem on Their School Adjustment: Focusing on the Mediation of Peer Attachment)

  • 권혜진;성미영
    • Human Ecology Research
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    • 제52권4호
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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.

유아의 기질적 특성이 또래놀이행동에 미치는 영향 - 어머니의 사회적 양육행동의 매개효과를 중심으로 (The Effects of Preschoolers' Temperament on Peer Play Behaviors: Focusing on Mediation of Mothers' Social Interaction Parenting Behaviors)

  • 황혜신;서주현
    • 한국보육지원학회지
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    • 제14권1호
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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.

무선 P2P 시스템에서 효율적 부모 피어 선택법 (Efficient Parent Peer Selection Method in a Wireless P2P System)

  • 박재성
    • 한국통신학회논문지
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    • 제39B권12호
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    • pp.870-872
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    • 2014
  • 본 논문에서는 피어의 소모 에너지와 잔여 에너지를 고려한 비용함수를 설계하고 시스템 내에 비용이 최소인 피어가 부모 피어로 선택될 수 있는 분산적 부모 피어 결정 방법을 제안한다. 각 피어가 자신의 이웃 피어 정보만을 이용하여 비용이 최소인 이웃 피어를 부모 피어로 선정하는 기존 기법과는 달리 제안 기법은 피어들 사이에 집단지성을 구축하고 이를 통해 부모 피어를 결정한다. 집단지성을 형성하여 부모 피어 검색 범위를 분산적으로 확장함으로써 제안기법은 기존 기법에 비해 최소 비용 피어가 부모 피어로 선택될 확률을 증가시키며 알고리즘 운영을 위한 시그널링 부하를 감소시킨 다는 것을 모의실험을 통해 검증하였다.

초등학생의 부모애착과 친구애착에 따른 친구관계의 질 (The Effect of Parent and Peer Attachment of Elementary School Children on the Quality of Friendship)

  • 장정백;윤미현
    • 한국지역사회생활과학회지
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    • 제19권4호
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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.

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부모의 학대 및 방임과 학령기 아동의 또래애착이 휴대전화 의존에 미치는 영향 (The Effects of Parental Abuse and Neglect, and Children's Peer Attachment, on Mobile Phone Dependency)

  • 우수정
    • Human Ecology Research
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    • 제51권6호
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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.

모애착과 또래애착이 아동의 친구간 갈등해결전략에 미치는 영향 (Influence of Mother and Peer Attachment on Conflict Resolution Strategies of Children)

  • 정선현;이희영
    • 수산해양교육연구
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    • 제24권6호
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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.

가정외보호 아동의 양육자 관계와 교우관계의 상호 영향: 자기회귀교차지연모형을 활용한 종단연구 (The Reciprocal Relationship between Caregiver Relations and Peer Relations of Children in Out-of-home Care: Longitudinal Study Using Autoregressive Cross-lagged Modeling)

  • 김담이;강현아
    • 아동복지연구
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    • 제16권2호
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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.

학령기 아동의 모애착과 우울 관계에서 또래애착이 미치는 매개효과 (The Relationship between Mother Attachment and Depression: The Mediation Effect of Peer Attachment in School Aged Children)

  • 민하영
    • 한국생활과학회지
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    • 제21권5호
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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.

소외아의 또래유능성에 영향을 미치는 요인 연구 (Variables Associated with Peer Competence of Neglected Children)

  • 문혁준
    • 대한가정학회지
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    • 제47권1호
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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.