• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권11호
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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.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제29권2호
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• pp.40-46
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• 2018

Objectives: The purpose of this study is to evaluate the preliminary effects of the Peer Relationship Enhancement Program in adolescents deemed to be in an at-risk group for Internet and smartphone addiction. Methods: The study group consisted of 33 adolescent participants (24 boys and 9 girls) at risk of Internet and smartphone addiction in small and medium-sized cities. The subjects participated in 8 consecutive sessions of the Peer Relationship Enhancement Program. The Korean Internet Addiction Proneness Scale, the Korean Smartphone Addiction Proneness Scale, the Real-Ideal Self Discrepancy Scale, the UCLA Loneliness Scale, the Peer Intimacy Scale, and the Escaping from the Self Scale were evaluated before the initial and after the final session. A paired t-test was performed to statistically analyze the data. Results: The Peer Relationship Enhancement Program led to a significant decrease (p<0.05) in self-reported measures of The Korean Internet Addiction Proneness Scale, the Korean Smartphone Addiction Proneness Scale, and the Real-Ideal Self Discrepancy Scale. Conclusion: The Peer Relationship Enhancement Program reduces the risk of Internet and smartphone addiction and effectively prevents the associated problems.

• 영어영문학
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• 제58권6호
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• pp.1085-1101
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• 2012

This study, guided by Engeström's (1999, 2001) activity theory which owes its theoretical lineage to sociocultural theory, explores how roles (peer feedback givers and receivers) and tasks are distributed among EFL students who engage in peer response. More specifically, as an extension of previous research of focusing on "stances" ESL students adopt, I investigate whether different roles in peer response groups make a difference in the nature of peer response and identify what underlays the different roles in peer group interaction. In addition, I examine whether different roles to the peer response create tensions and contradictions in peer response and how these created conflicts lead to changes in peer response activity system. The data I wish to consider is first-person narratives elicited from two EFL college students. I use Won's and Choi's (both pseudonyms) stories as a heuristic, which is a method that allowing one to proceed fruitfully in finding information. Foregrounded in this study are the students' different roles in the same peer response activity. A division of labor exists between Won/Choi and their peers - the way tasks are divided up and the way roles are structured. Yet Won and Choi adopted rather divergent roles when participating in peer response activity and carried out qualitatively different peer response activities. It is obvious here that the distribution of their roles in carrying out this particular peer response is shaped by Won' and Choi's perception about the validity of their peers' responses.

• 한국보육지원학회지
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• 제15권6호
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• pp.117-137
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• 2019

Objective: The purpose of this study was to investigate the effects of a cyclical empathy model-based empathy enhancement program on young children's empathy, peer competence and emotional intelligence. Methods: A total of 40 subjects were selected for this study from 5-year-old children attending S Day Care Center located in Seoul, out of whom 20 were assigned to an experimental group and the remaining 20 to a comparative group (control group). The SPSS 21 statistical program was used to determine whether there was a significant difference between the two groups in the effectiveness of the program implementation. Results: There were statistically significant differences in the changes between the pre and post scores of the experimental group and the comparative group, which showed that the cyclical empathy model-based empathy enhancement program was effective for the young children's empathy, peer competence and emotional intelligence. Conclusion/Implications: This study suggests that if a young children's empathy enhancement program can be applied to child care sites to help the teachers in the field children can overcome empathy-related difficulties by themselves. This study also provides basic information in order to have meaningful educational experiences in young children's education institutions.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2008년도 추계학술대회
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• pp.157-160
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• 2008

The recent successes of systems like Google, Wikipedia and InnoCentive suggest that the time is now ripe for more such systems. Thus, we want to explore these systems and exploit them from a viewpoint of social psychology prior to technological progress. First of all, we examine the difference between 'wisdom of crowds' and 'crowd psychology'. There are two classes, which are for senior management major students. Conditions of two are same, except a class time. Forty five students in one class are tested for this experiment. They form a group with five people and are divided into 9 groups. In a case of a morning class, peer-to-peer evaluations are given to individuals in a class when a group presentation for a final project is given. On the other hand, in a case of afternoon class, peer-to-peer evaluations are given to each group in a class. The result is quite fruitful. The first is that an expert's evaluation for a project agrees with students, who are beginners in this field in the degree of more than 95%. However, in the case of afternoon class, students' group evaluation turns out to agree with an expert's one less than 53%. Morning class experiment result proves the truth of collective intelligence again. It tunrs out independent and confidential opinions are more cost effective and give right answers to questions than group opinions.

• 대한간호학회지
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• 제42권4호
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• pp.525-536
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• 2012

Purpose: The purpose of the study was to evaluate effectiveness of a peer support program conducted by older community volunteers for older adults living alone. Methods: Thirty volunteers trained as peer supporters were matched with low-income, older adults living alone in the community on gender. Visits occurred on a weekly basis over the 12 month study period, and the volunteers provided peer support for health management to solitary older adults. Data were collected, before the start of the program and again 6 and 12 months after its initialization, from intervention and control groups regarding physical health, general health, mental health, depression, social functioning, and satisfaction with social support. Repeated measures ANOVA was used to analyze data. Results: By the end of the program, socially isolated older adults in the intervention group had significantly higher scores in physical health and general health than elders in the control group. Significant interaction effects between time and group were found for depression, social functioning, and satisfaction with social support. Conclusion: The peer support program undertaken by older community volunteers was effective in improving physical health, general health, depression, social functioning, and satisfaction with social support in socially isolated, low-income, older adults.

• Child Health Nursing Research
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• 제16권1호
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• pp.1-9
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• 2010

Purpose: In this study the effects of a self-growth program on self-esteem, inferiority and peer-relationships in children using a community child center were examined. Methods: A quasi-experimental design was used. Data were collected from August 26 to October 9, 2008. To test the effects of the self-growth program, the children were divided into two groups, an experimental group (28) and a control group (25). The self-growth program was used with the children in the experimental group. Results: The self-growth program effectively increased the self-esteem scores, and the peer-relationships scores of the children, and decreased the inferiority scores. Conclusion: The results suggest that the self-growth program is a useful nursing intervention for improving self-esteem, decreasing inferiority, and positively affecting peer-relationships in these children.

• 보건의료생명과학 논문지
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• 제9권1호
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• pp.61-68
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• 2021

본 연구는 인성이 포함된 그림책 활동이 유아의 또래유능성 및 공격성에 미치는 영향을 알아보고자 한다. 이를 위하여 본 연구에서는 I시에 위치한 유치원 2곳에 재원 중인 만 5세 남녀유아 총 41명을 대상으로 연구를 실시하였다. 실험 집단에게는 6주 기간 매주 2회씩 30분 동안 동화를 듣고 인성교육과 관련된 활동을 제공하였고, 비교집단에게는 일반적인 일과운영을 진행하였다. 수집된 자료는 SPSSWIN 18.0을 이용하여 공변량 분석을 실시하였다. 연구결과 실험 집단이 비교집단보다 또래유능성이 유의하게 높았으며, 공격성은 낮아졌다. 이러한 결과는 동화를 활용한 인성교육활동이 유아의 또래 유능성과 공격성에 긍정적인 영향을 미칠 수 있음을 시사한다.

• 보건교육건강증진학회지
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• 제22권2호
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• pp.173-193
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• 2005

Objectives: The purpose of this study is to analyze the peer group factor related to adolescent smoking in the social structure(network) of adolescent groups, by applying the theory of social network. Methods: The data was collected from boy students of one high school located in Gun-Po city of Kyonggi Province. The total number of the sample was 605(223 first grade, 198 second grade, 184 third grade). The survey using the questionnaire was carried out in April 2005. Social position is finally classified as clique member, liaison, isolate group by using the NetMiner II 2.5 version. Results: The current smoking rate was 15.0%, and the life-time smoking rate was 34.9%. The smoking rate increased significantly, as the grade went up. And it was significantly high among the group having smoking friends. The logistic regression analysis showed that the odds ratio of the smoking friends group was about 4 times higher than the no smoking friends group in experience of smoking. But the smoking rate was higher significantly in the isolate group within the network composed of 2. person's social-link. The odds ratio of the isolate group was about 4.5 times higher than the clique member. However, this pattern was not found in the network composed of 3 person's social-link. Therefore, the hypothesis that clique member would have a correlation with smoking was rejected. In reality, the isolate group had a tendency of smoking more frequently. Conclusions: The result of this study suggests that the role of the peer group in smoking is to be considered in the prevention program. More attentions should be paid for the isolate group.

• 한국전자통신학회논문지
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• 제12권5호
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• pp.965-976
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• 2017

본 연구에서는 온 오프라인 동료상담훈련이 사회복지전공 신입생의 자아존중감과 자기효능감에 미치는 영향을 살펴보고자 하였다. 연구대상자는 프로그램 참가모집 홍보를 보고 참여한 대상자 중에 실험집단 10명, 통제집단 10명으로 구성하였다. 실험집단 대상자들은 10주간 주1회 120분간은 대학생 동료상담훈련을 받았고, 다음날 주1회 60분간은 온라인 상담실습을 병행하였다. 프로그램의 효과를 검증하기 위해 실험집단과 통제집단 간 t검증과, 사전검사를 공변인으로 하는 공변량분석(ANCOVA)을 실시하였다. 연구결과 신입생의 자아존중감(F=13.258, p<.01)과 자기효능감(F=15.565, p<.01)에 있어서 통계적으로 유의미한 효과가 나타났다. 이는 대학생 온 오프라인 동료상담훈련이 사회복지전공 신입생의 자아존중감과 자기효능감 향상에 긍정적인 효과를 기대할 수 있는 훈련으로 사료된다.