• 가정과삶의질연구
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• 제25권4호
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• pp.43-55
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• 2007

The Purpose of this study was to investigate the ecological variables on adolescent's sociometric popularity. Independent variables were organism(sex, age, aggression, self-esteem, impulsiveness, prosocial behavior, dominance), microsystem(parenting style, family support, friends relationship, teacher support), mesosystem(family-peer relationship, family-school relationship), and exosystem(positive community environment, social support of extended family, school's policy). The subjects were 835 - 1st and 2nd graders of two middle and two high schools in Daegu. Adolescent's sociometric popularity and ecological variables were measured with questionnaire. Adolescent's sociometric popularity was measured with sociometric popularity questionnaire. Organism variables were measured with sex, age, aggression, self-esteem, impulsiveness, prosocial behavior and dominance questionnaire. Microsystem variables were measured with parenting style, family support, friends relationship and teacher support questionnaire. Mesosystem variables were measured with family-peer relationship and family-school relationship questionnaire. Exosystem variables were measured with positive community environment, social support of extended family and school's policy questionnaire. The data analyzed by frequency, percentage, mean, cronbach's $\alpha$, and multiple regression. The major findings were as follows: First, adolescent's sociometric popularity was affected by age, overt aggression, academic self-esteem, social self-esteem, and impulsiveness of organism variables. Second, adolescent's sociometric popularity was affected by mother's affectional parenting, mother's control parenting, and attachment to friends of microsystem variables. Third, adolescent's sociometric popularity was affected by family - peer relationship and family - school relationship of mesosystem variables. Fourth, adolescent's sociometric popularity was affected by appraisal support of extended family, after-school activity, and circle activity of exosystem variables.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권7호
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• pp.1638-1656
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• 2013

The demand for multimedia streaming services is increasing rapidly. To meet this demand, there has been much research and many practical developments for providing multimedia services. A push-to-talk (PTT) service is one of the multimedia streaming services that have been deployed not only over IP multimedia subsystem (IMS) but also in peer-to-peer (P2P) overlay networks. The benefit of PTT has been demonstrated in the literature. However, the need for using PTT service in communication can be arbitrary among users, regardless what kind of PTT services they use. This demand does not support current PTT systems, so an expansion of PTT services still be limited. Moreover, the combination of PTT services in IMS and P2P networks will help operators to provide more scalable PTT services. Therefore, in this paper, we proposed a model to support PTT service interworking between IMS and P2P overlay networks. We also introduced our system design and some interworking service scenarios. We confirmed our architecture through implementation and testing.

• 가정과삶의질연구
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• 제27권4호
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• pp.41-54
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• 2009

This study focused on the ecological variables that affect adolescents' runway impulse. For the organisms, self-esteem, impulse control, school achievement and runway experience, for the microsystems, family, school and peer environment, for the mesosystems, family-peer relationships and family-school relationships, and for the exosystem, neighborhood environment were included. The sample consisted of 651 eleventh grade adolescents. Instruments were the Runway Impulse Scale(Nam, 2001) and Index of organisms, microsystems, mesosystems, and exosystem variables. Statistics and methods used for the analysis were Cronbach's alpha, frequency, percentage, t-test, Pearson's correlation and multiple Regression. Several major results were found from the analysis. First, no sex difference was found in adolescents' runway impulse. Second, runway impulse of male and female adolescents showed positive correlations with runway experience, parental marital conflict, dissatisfactions of school life and exposure to friends with problems behavior but negative correlations with self-esteem, impulse control, school achievement, parental support and supervision, teacher support, family-peer relationships and neighborhood environment. Female adolescents' runway impulse stowed negative correlations with family-school relationships. Third, the most important variable predicting male adolescents' runway impulse was exposure to friends with problems behavior, the most important variable for female was self-esteem.

• 정보과학회 컴퓨팅의 실제 논문지
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• 제21권4호
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• pp.290-298
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• 2015

본 논문은 CORBA, Ice 등의 다른 미들웨어들과 비교하여 성능, 품질, 사용자 편의성 등에서 높은 평가를 받고 있는 공개 메시지 지향 미들웨어인 ZeroMQ 기반의 다중 에이전트 메시지 전송 구조를 제안한다. 제안 구조는 FIPA 에이전트 표준 규격들로부터 MTS(Message Transfer System) 등의 개념들을 빌려와 사용하고 있으며, 다중 에이전트 플랫폼 SMAF(Smart Multi-Agent Framework)의 구조적 장점을 계승한다. 제안 구조는 ZeroMQ 커뮤니티에 알려져 있지 않은 새로운 방식의 피어 대 피어 구조를 사용한다. 제안 구조는 MTS 마다 단 하나의 라우터 소켓만을 사용하여 MTS들 간의 피어 대 피어 통신을 지원한다. 제안 구조는 ZeroMQ가 지원하는 다양한 장치들과 패턴들에 대한 호환성과 확장성을 가지며, 전통적인 분산 에이전트 응용 분야들 뿐 아니라 에이전트들 간의 밀접한 협력을 필요로 하는 지능형 로봇과 같은 분야도 지원할 수 있다.

• 전기학회논문지
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• 제56권3호
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• pp.443-450
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• 2007

We overview the current distribution automation system in Korea and point out the limitations of the distribution services which can be provided by the current system. In this paper we propose a new distribution system architecture which is based on the peer-to-peer communication model. In this decentralized architecture the intelligent FRTUS can initiate data transmission without any interruption of a central server, and can exchange data with other FRTUS as peers. In order to support the peer-based distribution system, we specify the requirements for new communication network and suggest a way of improving the current distribution network where we adapt an intelligent module for protection and restoration, called MASX, and utilize the open communication network protocols. We also show how the new architecture can enhance major distribution services such as protection, automatic restoration, and equipment management.

• 컴퓨터교육학회논문지
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• 제10권5호
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• pp.43-51
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• 2007

본 연구의 목적은 프로그래밍 교육을 지원하기 위한 동료 에이전트를 개발하고, 실제 프로그래밍 교육에 적용하여 동료 에이전트의 교육적 효과를 검증하는 것이다. 학습자와 에이전트 사이의 역할을 동료 프로그래밍 관점에서 Tutor와 Tutee로 정의하고, 에이전트가 학습자의 수준을 진단하기 위한 베이지안 네트워크 학습자 모델을 개발하였다. 이를 기반으로 동료 에이전트는 학습자의 수준에 따라 적절한 피드백이나 학습내용을 제공한다. 개발된 동료 에이전트 시스템을 실제 프로그래밍 교육에 적용한 결과, 학습자의 학업성취도와 자기효능감 증진에 효과가 있는 것으로 나타났다. 이는 동료 에이전트 학습 시스템이 학습자의 인지적 영역과 더불어 정의적 영역에 있어서도 긍정적인 영향을 주는 것을 의미한다.

• 아동학회지
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• 제16권1호
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• pp.197-210
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• 1995

The purpose of this study was to investigate the relationship between social support and perception of self-confidence in children by grade, sex, and other related variables. The subjects were 136 third-graders, 143 sixth-graders, and 161 eighth-graders in public schools located in Pusan. Instruments were Harter's Self-Perception Profile for Children and the Social Support Appraisal Scale (SSAS). The SSAS is a 31-item measure that taps children's perception of family, peer, and teacher support. The data were analyzed by frequency, percentile, ANOVA, Scheffe test, Pearson's correlation, and multiple regression. The main results showed that (1) children in 6th and 8th grades perceived higher peer support than children in 3rd grade, (2) except for social acceptance, the children in higher grades perceived themselves lower in self-competence than the children in lower grades, (3) there was a positive relationship between children's perception of self-competence and social support, and (4) the variables which influenced children's self-perception were, in descending order: socioeconomic status(${\beta}=.52$), age(${\beta}=.21$), social support(${\beta}=.10$). These three variables explained 38% of the children' self-perception.

• 통상정보연구
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• 제6권3호
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• pp.63-79
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• 2004

Peer-to-peer(P2P) has potential strength and possible factors which enable it to develop toward a new business by supplementing the limitation of the existing central server-type network. In various business sectors, various attempts have already been made to apply P2P. The computing power which was possible to be formed through peer-to-peer networking will become a powerful tools for expanding toward new business area depending the utilization methods by sector. Although the technology-centric P2P concept is a major interest now, its development direction will head toward service-centric P2P concept for satisfying desires of end-users(individual peers) for reliable contents and improving their purchasing convenience. But the solution requisites should be solved for the efficient application of P2P to business such as the establishment of and supplement for the industrial standard and legal system for P2P, the enhancement of peers recognition of P2P. Presently e-commerce using P2P is being implemented by a few enterprises locally by means of B2C. But if many enterprises enter this type of e-commerce, and the standardization of peer programmes, goods and documents is made, it will be able to be extended to B2B. Also it seems that it can be utilized in international transactions as well as in domestic transactions. So there is much room for the application of P2P to be extended further. Also there has been presented the necessity for related industries to support their work with theories and for academic studies to be made actively to set the direction of its development. It is hoped that multi-angled and in-depth studies on the utilization of P2P and various attempts to application of it to business be made on the basis of this study. For the development of P2P, continuous study and attempts are needed. The field of P2Ps application is very large and it will become a powerful tool, depending upon its application methods.

• 한국가정과교육학회지
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• 제25권3호
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• pp.79-91
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• 2013

본 연구는 고등학생이 인식하는 친구지지, 가족건강성과 자기통제력의 관계를 분석함으로써 자기통제력을 향상시킬 수 있는 방안을 모색하며 가정과 학교에서 고등학생을 지도하는 데 있어 기초적인 자료를 제공하고자 한다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 고등학생들의 친구지지와 가족건강성은 중간값(3.0)보다 높았고, 자기통제력 중 장기적인 만족을 추구하는 정도는 중간값보다 높고, 즉각적인 만족을 추구하는 정도는 중간값보다 낮았다. 둘째, 친구지지는 성별에 따라 유의미한 차이가 나타났고, 가족건강성은 생활수준과 부모의 학력에 따라 부분적으로 차이가 나타났다. 또한 자기통제력은 성별과 부학력에 따라 유의미한 차이가 나타났다. 셋째, 가족건강성과 자기통제력 사이에 유의한 상관이 있는 것으로 나타났고 친구지지와 자기통제력 사이에는 유의한 상관이 나타나지 않았다. 넷째, 자기통제력에 유의미한 영향을 미치는 변인들은 역할공유 및 문제해결력, 의사소통 및 가족유대, 부학력이었으며, 이 변인들은 자기통제력을 15% 설명해 주었다. 이와 같은 연구 결과를 살펴볼 때 고등학생의 자기통제력에는 가족건강성의 영향력이 크다는 것을 알 수 있다. 따라서 가정의 역할이 중요하므로 가족 간의 유대를 강화하고 긍정적인 의사소통을 하도록 가정과교육을 강화하며, 고등학생의 자기통제력을 증진시킬 수 있는 프로그램을 개발하여 제공할 필요가 있다.

• 아동학회지
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• 제14권1호
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• pp.109-127
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• 1993

This study examined compensatory patterns of support among three types of children's peer relationships: school friendships, nonschool friendships, and sibling relationships. Specifically, this study investigated (1) the degree to which children with unsupportive school friendships turn to nonschool friends and siblings to compensate for the provisions they lack from school friends, and (2) the potential protective effects of substitute support on such children's adjustment. Subjects for this study were drawn from a sample of 297 sixth graders attending 3 public schools in Seoul. 6 teachers and 594 of parents of subjects also participated in the study. Subjects completed their questionnaires in their own classroom. The teachers and parents completed their forms within 1 week. The data were analyzed by two-way ANOVA and $Scheff{\acute{e}}$ test. The results of this study were as follows: (a) When compared with the average, aggressive children and isolated children perceived their school friendship as low support. (b) Isolated, aggressive, and average children differed in their perceptions of support from nonschool friends and their favorite siblings. (c) The children who have unsupportive school friendships experienced greater socioemotional difficulties than did children with supportive school friendships. (d) The extent that sibling and nonschool friends provided the support lacking in their school friendships, isolated and aggressive children experienced diminished emotional distress.