• The Transactions of the Korean Institute of Electrical Engineers D
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• v.55 no.2
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• pp.62-64
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• 2006

The emerging peer-to-peer (P2P) model has recently gained a significant attention due to its high potential of sharing various resources among networked users. Super-peer based unstructured P2P systems have been found very effective by dividing the peers into two layers, super-peer and ordinary-peer Super-peers deal with all queries instead of ordinary-peers. The existing P2P systems assume all super-peers have equal responsibility and capabilities even if all super-peers have relative advantages and disadvantages. In this paper, we suggest the ISP2P (Intelligent Super-peer based P2P) which allows to select the best super peer to ordinary-peers. We classify super peers according as the capacity of an ordinary-peer a super-peer. We show that these considerations could improve the performance of the response time and Provide higher quality results to all peers in the network.

• Journal of Gifted/Talented Education
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• v.15 no.1
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• pp.49-66
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• 2005

The purpose of this study is to compare the peer relations of the gifted students in science and ordinary students. To this study, the questionnaire to access students' satisfaction with their peer relations, students' feeling of loneliness, and the quality of peer relations was conducted to the subjects of 147 gifted students in science and 253 ordinary students in Korea. In the peer relations at the ordinary class, the significant difference between them was found in the students' feeling of loneliness, so the gifted students showed a little lower feeling of loneliness than the ordinary students. Also, the significant difference was found in the quality of peer relations. In the perception of the gifted students' peer relations at the gifted and ordinary class, satisfaction with their peer relations and the quality of peer relations were showed the significant differences. There was more mutual peer relations between the gifted than the ordinary students.

• Journal of Families and Better Life
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• v.27 no.2
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• pp.227-241
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• 2009

This study examined to find out mediating variable between ordinary stress and anxiety-depression. The subjects were 2,844 4th grade elementary school in Korea. The instruments used were questionnaires about anxiety-depression, ordinary stress, anger control ability and negative self-concept. Data were analyzed by t-test and regression. Major findings were as follows: (1) There were significant difference in parent-, appearance-, possession-related stress, anger control ability, negative self-concept and anxiety-depression according to sex. (2) Parent-, schoolwork-, peer-, appearance-related stress and anger control ability had a significant effect on the anxiety-depression. The principal finding was that anger control ability had mediating role between ordinary stress(schoolwork-, peer-, appearance-related stress) and anxiety-depression in male, one side parent-related stress and anxiety-depression in female. (3) Parent-, schoolwork-, peer-, appearance-related stress and negative self-concept had a significant effect on the anxiety-depression. The principal finding was that negative self-concept had mediating role between ordinary stress(parent-, schoolwork-, peer-, appearance-, possession-related stress) and anxiety-depression in male, one side parent-, peer-related stress and anxiety-depression in female.

• Proceedings of the KIEE Conference
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• 2006.04a
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• pp.159-161
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• 2006

The peer-to-peer (P2P) systems have Brown significantly over last few years due to their hish potential of sharing various resources. Super-peer based P2P systems have been found very effective by dividing the peers into two layers, SP (Super-Peer) and OP (Ordinary-Peer). In this paper, we present ISP2P (Intelligent Super-peer based P2P system), which allows us to choose the best SP. Through analyzing capacity and similarity between SP and OP, we can help OPs to select the most appropriate SP respectively. Proposed system can improve the performance of the average response time by superior SP, reduce the bandwidth cost by small path length due to content similarity and solve frequent SP replacement problem by considering similarity of user behavior.

• Journal of the Korea Society of Computer and Information
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• v.13 no.7
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• pp.109-115
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• 2008

In the P2P distributed system, such peers don't always keep on-line status. P2P systems are different from the ordinary systems that such peers are organically operated as the elements of system. In this case, users using P2P system are able to loss the reliability. At this point, many P2P studies are tried to resolve these problems. In this paper, we suggest a P2P search algorithm for multidirectional processing about the resources to be downloading. In existing studies, the loading rate is very high to select new resources supported peer, so we suggest new solution in this study.

• Journal of Contemporary Eastern Asia
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• v.19 no.1
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• pp.123-143
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• 2020

This study examines the interplay between the reactions of YouTube users and North Korean propaganda. Interesting enough, the study has noticed changes in the strict media environment under young leader Kim. Messages delivered by the communist regime to the outside world appeared to resemble those of 'normal' countries. Although North Korean YouTube was led mainly by the account operator, visitors from different nations do comment on the channel, which suggests the possibility of building international communities for propaganda purposes. Overall, the study observed a sparsely connected social network among ordinary commenters. However, the operator did not exercise tight control over peer-to-peer communication but merely answered questions and tried to facilitate mass participation. In contrast to the many news clips, the documentary content on North Korea's YouTube channel did not explicitly advocate for North Korea's current political positions.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.14 no.4
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• pp.275-284
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• 2010

Deliberate self-harm (DSH) is the act of deliberately harming your own body, such as cutting or burning yourself, without suicidal intent. It has especially become a problem among adolescents and college-age students in institutional settings such as boarding schools, Greek houses, detention centers and hospitals. We focus on contagion of DSH among adolescents and young adults by creating a deterministic epidemiological model. We study the impact of actual peer pressure, virtual peer pressure (the Internet) and treatment analytically in terms of a basic reproduction number through stability analysis of a system of ordinary differential equations. All parameters are approximated and results are also explored by simulations. The model shows that DSH is present in an endemic state in the population considered, and the control strategies are discussed.

• Proceedings of the Korea Concrete Institute Conference
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• 2009.05a
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• pp.557-558
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• 2009

Fatigue analysis of trunnion on Saemangeum bridge was performed. Trunnion is the some kind of bracket structure between the gate and the bridge peer with varying load by sea water level variation. The result shows some difference with ordinary structures.

• The Journal of the Korea Contents Association
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• v.19 no.7
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• pp.246-257
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• 2019

This research aimed to verify possibly expanding college festival's performance to ordinary life. College festivals have consolidated student communities and created college culture. Recently, the festivals have been challenged for commercialization such as celebrity concert and company sponsorship. College festival is a text, which is based on ordinary college life and should served a role to restore college life. Pine & Gilmore's experience model was used to find that quality festival experience leads to satisfaction and satisfaction enhance peer relations. More participate school life, the better experience the festival program. Total 195 of questionnaires were administered to college festival participants and coding data were analyzed by regression and t test. Result found that College festival experience significantly affects festival satisfaction(H1), festival satisfaction affect re-participation(H2) and peer relations(H3). High level of school life participation group showed significant differences in festival experience and other variables in compare with low level group(H4). Theoretical /practical significances and research limitation were included.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.611-620
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• 2016

Firms grow in a competitive environment and competition can be a source of corporate growth. In an increasingly global market, companies face increased competition. As such, it is natural that all firms face some degree of risk due to competition. While firms compete for market share, they also imitate competitors in order to minimize risk that accompanies competition. This research attempts to demonstrate the effects of inter-firm competition on investment decisions. Using idiosyncratic equity returns as the instrument variable, this paper uses a two-stage least squares regression, as well as an ordinary least squares (OLS), to identify the influence of peer firms' investment decisions on a firm's own investment strategy. The results confirm that firms show stronger imitative behavior with more intense competition. Also, firms with higher debt ratios show higher peer group influence. This imitative factor provides clues to measure the risk-averseness in investment decisions.