• Journal of Families and Better Life
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• v.32 no.6
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• pp.59-72
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• 2014

The purpose of this study was to examine the impact of peer support on conduct behavior and withdrawal and to investigate the mediating effect of negative automatic thought. The subjects included 461 students(boys 51%, girls 49%) from the 1st to 3rd grades of middle school in Seoul. Conduct behavior and withdrawal was measured by the Korean Youth Self Report and the Conners-Wells'-Adolescent Self Report Scales. Negative automatic thoughts were measured by the Korean Children Youth Automatic Thoughts Scale. Using Amos 20, structural equation modeling was conducted. The findings of the structural equation modeling was that peer support had an impact on conduct behavior and withdrawal. Peer support contributed to a reduction of negative automatic thoughts. Negative automatic thoughts had a mediating effect between peer support and withdrawal or conduct. We suggest that peer support affects conduct behavior and withdrawal through negative automatic thought. We also found gender differences; compared with girls, boys received less support from peers. They also had lower levels of negative automatic thoughts and withdrawal than girls. The further study should be considered to provide more correlation factors of peer support.

• Journal of Families and Better Life
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• v.32 no.6
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• pp.47-58
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• 2014

The purpose of this study was to examine the effects of mothers' parenting behavior, preschool children's language ability and emotion regulation on peer competence and aggressive behavior. The subjects were 100 preschool children (49 girls and 51 boys; mean age, 70.30 months), their mothers and teachers, recruited from five daycare centers located in Gyeonggi-do area. Each child's language ability was assessed individually with the standardized measure, the Preschool Receptive-Expressive Language Scale and their teachers reported on the children's peer competence and aggressive behavior. Their mothers also reported on parenting behavior and their child's emotion regulation by questionnaire. The collected data was analyzed by correlation analysis and hierarchical regression. The main results of this study were as follows. First, preschool children's peer competence was positively related to maternal warmth and children's language ability. Their aggressive behavior was positively related to harsh maternal parenting but negatively related to emotion regulation. Second, hierarchical regression analyses revealed that children's language ability and maternal warmth predicted peer competence. Third, children's gender, emotion regulation, and harsh maternal parenting predicted aggressive behavior. These findings could provide basic information for programs and services to promote peer competence in preschool children.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.5 no.11
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• pp.2143-2159
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• 2011

The hybrid architecture of content delivery networks (CDN) and peer-to-peer overlay networks (P2P) is a promising technology enables effective real-time streaming services. It complements the advantages of quality control and reliability in a CDN, and the scalability of a P2P system. With real-time streaming services, however, high connection setup and media delivery latency are becoming the critical issues in deploying the CDN-P2P system. These issues result from biased peer selection without location awareness or content awareness, and can lead to significant service disruption. To reduce service disruption latency, we propose a group-based CDN-P2P hybrid architecture (iCDN-P2P) with a location/content-aware selection of peers. Specifically, a SuperPeer network makes a location-aware peer selection by employing a content addressable network (CAN) to distribute channel information. It also manages peers with content awareness, forming a group of peers with the same channel as the sub-overlay. Through a performance evaluation, we show that the proposed architecture outperforms the original CDN-P2P hybrid architecture in terms of connection setup delay and media delivery time.

• Korean Journal of Child Studies
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• v.22 no.4
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• pp.17-32
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• 2001

The purpose of this study was to explore the developmental patterns of self-concept of pre-adolescents and adolescents by using the longitudinal data originated by the Korean Institute for Research in the Behavioral Sciences (KIRBS). Specifically, using Structural Equation Modeling (SEM), the effects of parents and peer groups on the stability and change of self-concept were examined across a 9-year-period. The subjects were 62 children(29 boys and 33 girls) from the KIRBS longitudinal data. The results showed that, peer relationships revealed consistent effects on children's self-concept from pre-adolescence to mid-adolescence. In particular, this influence was most evident at 7 years of age and at 16 years of age. However, parental influence was almost non-existent for 7-year-olds, equivalent to peer relationships for 10-year-olds, and decreased for 16-year-olds. On the whole, parental and peer influence on self-concept gradually decrease in adolescence. Nevertheless, parental and peer influence continue to maintain a certain level of influence from childhood to adolescence. This study provides an understanding of developmental change and stability in the self-concept of Korean adolescents.

• Journal of Korean society of Dental Hygiene
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• v.9 no.3
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• pp.536-544
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• 2009

Purpose : This study aimed to examine the relationship between intragroup peer evaluation and self-directed learning readiness(SDLR) in an Introduction to Education class that used a team based learning(TBL). Moreover, it identified the specific components of the SDLR that predicted the peer evaluation results. Method : The research subject pool comprised of 87 $1^{st}$ students in D Health College. Each team was composed of 6~8 members, each of whom evaluated all other members on his or her team SDLR was measured by using SDLR-K-96. Results : SDLR and peer assessment scores had a positive relationship, confirming that SDLR was an important variable that could predict the peer evaluation scores. Among the SDLR factors, 'openness to challenge' and 'self-confidence as a learner' was shown to have the predictive power for the peer assessment. Conclusion : The colleges should provide dental hygiene students with learning opportunities on ability to do self-directed learning through diverse learning methods such as team based learning.

• Korean Journal of Childcare and Education
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• v.7 no.4
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• pp.273-299
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• 2011

The purpose of this research was to examine the relationship of mother's emotional expressiveness, parenting self-efficacy, verbal control style and children's peer interaction, ability to solve interpersonal problem in an attempt to help improve mother's practical parenting style for promoting children's peer interaction and ability to solve interpersonal problem. The subject of this research were four to five year-old 212 children from five day care center in J city and their teachers. Teachers were tested by questionnaires and children were interviewed. There were the results of this research. There were significant positive correlation among mother's positive emotional expressiveness, positive peer interaction and ability to solve interpersonal problem. There were significant positive correlation among negative emotional expressiveness, negative peer interaction and ability to solve interpersonal problem. There were significant positive correlation between parenting self-efficacy and positive peer interaction. There were significant positive correlation among imperative verbal control pattern and negative peer interaction and ability to solve interpersonal problem. There were significant positive correlation among hierarchical verbal control pattern and negative peer interaction and ability to solve interpersonal problem. There were significant positive correlation among humanitarian verbal control pattern and positive peer interaction and ability to solve interpersonal problem. There were significant negative correlation between parenting self-efficacy and negative peer interaction. There were significant negative correlation between imperative verbal control pattern and positive peer interaction.

• The Korean Journal of Elementary Counseling
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• v.10 no.2
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• pp.151-165
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• 2011

This study aims to demonstrate how well SCM analysis, which indicates social cognitive map of categorizing peer subgroups of elementary school students, corresponds with that of teachers. To do this, the subject of this study includes two classes of the 3rd and the 5th grade students in D elementary school in B-gu, Busan city. Over 30 students of each gender in each grade were surveyed with social network questionnaires to collect data. The result of the social network survey was analyzed by SCM 4.0 program to categorize peer subgroups within each class. The categorized peer subgroups were reported to the class teacher. Based on the report, the class teachers observed peer subgroups in classes. After the teachers observed and categorized the students into several peer groups, an analysis was conducted to compare the peer subgrouping by students with that by teachers. The result showed the two were 80% correspondent to each other regardless of gender and grade. If interobserver reliability stays within the range of 80-100%, it is considered reliable. And this leads to the conclusion that peer subgrouping by students' cognition and that by teachers' observation can be regarded quite corresponding. In conclusion, peer subgrouping through SCM is significant when peer subgrouping Korean children, and it appears to be more significant when analyzed considering different variables including gender and grade. Peer subgrouping by girls is shown to be more accurate than that by boys.

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.68-78
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• 2010

As the IP multicast function is very slowly deployed in Internet due to its scalability problem and inter-domain interoperability problem, interest in the P2P(Peer-to-Peer) streaming technologies for the realtime multimedia multicast applications such as IPTV is highly growing. This paper proposes a P2P streaming method for the QoS-sensitive multimedia multicast applications such as highly-interactive personal IPTV and video conferences. The proposed P2P streaming method allows an application to construct a reliable streaming tree in which a proper number of backup peers are placed according to its reliability requirement. The reliable streaming tree reduces the reconnection delay, occurred in the case of a normal and/or abnormal peer leave, so as to minimize the loss of streaming data. In the proposed P2P streaming method, the join delay of a peer called startup delay is also substantially reduced because the bandwidth and end-to-end delay information of every peer kept in a distributed way allows the target peer for a joining peer to be able to be quickly determined. Moreover, the proposed method's peer admission control mechanism based on the bandwidth and end-to-end delay enables the delay-bounded streaming services to be provided for its corresponding applications.

• Journal of the Korean Society for Railway
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• v.12 no.3
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• pp.376-381
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• 2009

While applying the systems engineering (SE) in systems development, a series of technical reviews play a critical role and is intended to monitor the status of the progress and outcomes of the project for which appropriate technical plans prepared earlier should be executed. It is noted however that during the technical review executed as planned, a lot of problems usually come out. Included are the ambiguity in the reports of the progress status and outcomes, discrepancies among the opinions from different participants, and the delay in carrying out the tasks. To solve those problems in an early stage, informal reviews are usually adopted before the formal technical reviews are held. A type of the informal reviews is the peer review. This paper is concerned with the peer review process model to make the later technical reviews more effective. Specifically, we first review the necessity and meaning of the peer reviews. We then study a model for the peer review process. To model the process, the methods of an IDEF modeling and schema definition have been applied using a computer-aided SE tool, Cradle(R), in the environment of the national research and development project. As a result, the implemented process model can show hew the peer review process is designed and managed to be utilized in the technical review. The documents related with the peer review process can also be generated automatically from the developed model Database. Finally, a general misunderstanding about the peer review and its improvement plan have also been mentioned.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.414-425
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• 2022

This study aims to develop a training program to strengthen the competency of peer tutors at A University and to establish a sustainable system. It was conducted in the process of developing, operating, evaluating, modifying, and supplementing the curriculum for about two years from January 2019 to February 2022. In-depth interviews, surveys, literature reviews, and expert surveys were used as research methods. The research results can be summarized as follows. First, by combining in-depth interviews and ranking of educational needs of peer tutors' competencies, the researchers designed peer tutors training curriculum and certification system, and these were certified by conducting expert surveys. Second, from March 2020 to the end of February 2022, peer tutor training and certification system were operated, and as a result of a satisfaction survey of students, 4.33 points on average in 2020 and 4.61 points on average in 21, indicating high satisfaction. Finally, the implications were discussed for establishing peer tutor training programs and system in universities.