• Journal of Communications and Networks
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• v.12 no.2
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• pp.181-190
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• 2010

A multitude of overlay network designs for resilient routing, multicasting, quality of service, content distribution, storage, and object location have been proposed. Overlay networks offer several attractive features, including ease of deployment, flexibility, adaptivity, and an infrastructure for collaboration among hosts. In this paper, we explore cooperation among co-existing, possibly heterogeneous, overlay networks. We discuss a spectrum of cooperative forwarding and information sharing services, and investigate the associated scalability, heterogeneity, and security problems. Motivated by these services, we design Synergy, a utility-based overlay internetworking architecture that fosters overlay cooperation. Our architecture promotes fair peering relationships to achieve synergism. Results from Internet experiments with cooperative forwarding overlays indicate that our Synergy prototype improves delay, throughput, and loss performance, while maintaining the autonomy and heterogeneity of individual overlay networks.

• Korean Journal of Child Studies
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• v.23 no.6
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• pp.1-14
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• 2002

This study investigated topic continuity in 5-year-old children during verbal interactions with peers by socioeconomic status and type of task. Each of the 78 children in this study participated in topic continuity sessions consisting of 4 l0-minute play periods with a same-sex peer : 2 in familiar and 2 in unfamiliar situations. Sessions were videotaped and transcribed. Transcripts were analysed by a modified version of the Kertoy and Vetter (1995) topic coding system; categories included topic initiation, topic continuation(collaboration and incorporation), and off-topic. Results showed that children from middle-income families stayed on topic and collaborated more than children from low-income families. Children displayed more topic continuation, collaboration and incorporation in familiar than in unfamiliar situations.

• Journal of Korean Ophthalmic Optics Society
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• v.12 no.1
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• pp.75-84
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• 2007

In this study, I developed a teaching-learning model using project learning model which makes the most of PIM(Peer & Instructor Mentoring), Presentation contest, and unification of courses on the field ophthalmic optics. There were several conclusion as followings;. The teaching-learning model considering the unification and organic connections among subjects was efficient to the students' academic achievement. Peer & instructor mentoring system was helpful for students to accomplish their own learning projects. Project learning model with collaboration was useful for the development of students' self-controled learning ability and communicative ability. Project learning model gave its driving force to the better motivation and to the goal achievement. Project learning model was instructive for building up the related theories and concepts on the students' major. In conclusion, project learning model mixed subjects with festival, can be a alternative teaching-learning model.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.6
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• pp.662-673
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• 2003

This paper proposed a workflow enactment model to provide process management functions for the next generation Internet service environment such as Web Service and Grid Computing. The existing enterprise workflow enactment models could not meet the scalability and reliability requirements for aforementioned environments. To satisfy these requirements, this study addressed on applying P2P model to the workflow enactment model. Mathematical description and proof were employed to show the recovery based on set theory and we also showed performance enhancement through simulations, which demonstrated a comprehensive result giving more than 100 times fast response time than the existing centralized model on the same resources.

• The Journal of Korean Association of Computer Education
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• v.5 no.1
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• pp.17-25
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• 2002

The purpose of this study is to utilize new way of learning, Problem-Based Learning, for learning of VisualBasic programming. Providing authentic problems is a critical factor for programming learning because the skill may be not such a simple command learning but includes a variety of complexity. The objective of the learning is to develop quiz using VisualBasic programming. With programming skill, students was expected to solve the problem through peer collaboration activities as well as evaluation by peer and group composites. According to descriptive survey, it is concluded that students figure out their own learning status clearly. Furthermore, improvement of learning attitude and participation affect satisfaction and self-confidence.

• Child Health Nursing Research
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• v.22 no.2
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• pp.107-116
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• 2016

Purpose: Involvement of families in rounds is one strategy to implement patient- and family-centered care to help families get clear information about their child, and be actively involved in decision making. The purpose of this paper was to identify the major concepts of family-centered rounds for hospitalized children. Methods: We searched five electronic databases for relevant articles and used Whittemore and Knafl's integrative review methods to synthesize the literature. Articles published between June 2003 and January 2016 were reviewed and through full text screening 24 peer-reviewed articles were found that met the selection criteria for this review. Results: Through in-depth discussion and investigation of the relevant literature, four overarching components emerged: (a) cognition of parents and medical staff, (b) effective communication, (c) collaboration of family and medical staff, (d) coaching of medical staff. Conclusion: For successful family-centered rounds positive cognition is important. Appropriate communication skills and consideration of multi-cultural family can lead to effective communication. Offering consistent and transparent information is important for collaboration between family and medical staff. Prior education on family-centered rounds is also important. Four major components have been identified as basic standards for implementing family-centered rounds for hospitalized children.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.7 no.11
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• pp.2690-2701
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• 2013

Humans are able to recognize small number of people they know well by the way they walk. This ability represents basic motivation for using human gait as the means for biometric identification. Such biometric can be captured at public places from a distance without subject's collaboration, awareness or even consent. Although current approaches give encouraging results, we are still far from effective use in practical applications. In general, methods set various constraints to circumvent the influence factors like changes of view, walking speed, capture environment, clothing, footwear, object carrying, that have negative impact on recognition results. In this paper we investigate the influence of walking speed variation to different visual based gait recognition approaches and propose normalization based on geometric transformations, which mitigates its influence on recognition results. With the evaluation on MoBo gait dataset we demonstrate the benefits of using such normalization in combination with different types of gait recognition approaches.

• Journal of Fisheries and Marine Sciences Education
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• v.19 no.2
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• pp.310-322
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• 2007

This study is to find ways of support for beginning teacher induction in elementary school with constructing model of professional development. To achieve this purpose, this study reviewed significance of beginning teacher induction program, the bridge to life learning, and constructed the model of professional development for beginning. The final conclusion about ways of support as support intensity are orientation based on demanding of beginning teacher, bridge connection with veteran teacher, coordination of working conditions, collaboration among peer teacher, and strengthening computer network at week intensity level. At strong intensity level, the ways of support for beginning teacher are institutionalization on election and training of mentor, institutionalization on compulsory induction for 1 year, development and operation of teacher education center, and furtherance of school learning organization.

• Research in Mathematical Education
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• v.27 no.1
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• pp.111-127
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• 2024

There is an increasing concern in the United States regarding the workforce's ability to maintain a competitive position in the global economy. This has led to an increased interest in effective science, technology, engineering, and mathematics (STEM) education. The purpose of this study was to investigate the effect of STEM project-based learning (PBL) on students' self-regulation and motivation to learn. Secondary students (n = 60) participated in a STEM summer camp in which STEM PBL was utilized. Results showed that students increased their self-regulation skills (t = 2.83, df = 59, p = .004) and motivation (t = 2.25, df = 59, p =.004), with Cohen's d effect sizes of 0.395 and 0.404, respectively. Student-centered learning and peer collaboration while solving real-world problems were likely the greatest contributing factors to the outcomes. Educators should utilize the results to provide opportunities for students to experience STEM PBL.

• Korean Journal of Child Education & Care
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• v.18 no.4
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• pp.1-25
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• 2018

Purpose: The purpose of this study was to explore about 2-year-old infants' attachment security to a child care teacher and peer play process through a case study. For this purpose, the attachment security was assessed with attachment Q-set to 2-year-old five infants at a day care center in Seoul. Participants of this study are four infants included two infants attached securely to their child care teacher and two infants attached insecurely to their child care teacher. Methods: Participant observation was conducted from April 12 to July 19 in 2018 through 36 observations in free play activities. The Data collected from the transcriptions of video shoots and teachers' interviews, child care plans, and reflexive journal was analyzed and interpreted. Results: The main results of the research were as follows: The beginning of peer play, when infants invited their peers to play, secure attachment infants selected suitable play partners and asked for a specific play behaviors. However, insecure attachment infants invited unsuitable play partners and asked uncertainly play actions to peers. In addition, when infants entered in-progress play, secure attachment infants understood the context of play but insecure attachment infants did not understand the context of play. In the progress of peer play, secure attachment infants cooperated with peers, shared play objects, but insecure attachment infants did not cooperate complementally with peers and express only their opinions. As well, insecure attachment infants could not play harmoniously without child care teacher's interventions. In the end of the peer play, secure attachment infants finished in collaboration with peers but insecure attachment infants failed to finish with the peers and was turned into play with the child care teacher because of peer conflict. Conclusion/Implications: This study has implications for basic resources to think about the role of child care teachers by helping them understand about the relation 2-year-old infants' attachment security to them and peer play process.