• The Journal of Society for e-Business Studies
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• v.20 no.1
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• pp.23-43
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• 2015

Information and communications technology facilitates collaboration among individuals by functioning as an open platform for open collaboration projects. In this regard, this study aims to understand the network characteristics of participants who contribute greatly to open collaboration by investigating the mutual cooperation network in an open source project, which represents a form of open collaboration based on social network theory. To achieve this objective, this study analyzes the network centrality of developers with a high number of commits, particularly 8,101 developers in 782 repositories in GitHub, a representative open source platform. This study also determines how the relationship between network centrality and number of commits depends on the size of a repository network and the presence of a hub. Consequently, the number of commits by developers with high degree, betweenness, and closeness centrality is increasing. Among which, betweenness centrality has the highest explanatory power. Furthermore, when a hub is present and as network size increases, the relationship between the betweenness centrality of a developer and his/her number of commits continues to grow. This study is expected to provide suggestions for the successful performance of open collaboration projects in the future.

• Journal of Internet Computing and Services
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• v.19 no.5
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• pp.89-96
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• 2018

In online communities, a large number of participants can exchange their opinion using replies without time and space restrictions. While the online space provides quick and free communication, it also easily triggers unnecessary quarrels and conflicts. The network established on the discussion participants is an important cue to analyze the confrontation and predict serious disputes. In this paper, we present a quantitative measure for polarity observed on the discussion network built from reply exchanges in online communities. The proposed method uses the comment exchange information to establish the user interaction network graph, computes its maximum spanning tree, and then performs vertex coloring to assign two colors to each node in order to divide the discussion participants into two subsets. Using the proportion of the comment exchanges across the partitioned user subsets, we compute the polarity measure, and quantify how discussion participants are bipolarized. Using experimental results, we demonstrate the effectiveness of our method for detecting polarization and show participants of a specific discussion subject tend to be divided into two camps when they debate.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.247-249
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• 2004

노드가 네트워크에 참여하고 다른 노드와 통신을 하기 위해서는 관리자가 수동으로 해당 노드를 설정하거나 네트워크 상의 DHCP 서버로부터 자동 설정이 가능해야 한다. 그러나 이러한 방법은 인프라 구조가 없는 이동 애드혹 네트워크에서는 실용적이지 못하다. 본 논문은 이동 애드혹 네트워크에 참여하려는 새로운 노드가 충돌 없이 효율적으로 IP 주소를 획득할 수 있는 LDAP 알고리즘을 제시한다 LDAP 알고리즘에서는 모든 노드가 모든 IP 주소에 대한 주소 풀(address pool)을 가지고 있으며 새롭게 네트워크에 참여하는 노드에게 주위 노드가 주소 풀을 분배하는 방식으로 동작한다. 모의 실험을 통하여 제안된 기법이 기존에 제시된 알고리즘에 비하여 주소 설정 시간과 통신 오버헤드 측면에서 우수한 성능을 보임을 증명한다.

• Korean Journal of Social Welfare
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• v.63 no.1
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• pp.57-84
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• 2011

This study aims to analyze a whole network effectiveness by expanding the unit of analysis beyond individual organizations in a network into network-level collaborative relations. Data for the analysis were drawn from the evaluation reports and surveys of leaders, mid-level managers, and staff members of the organizations participating in 'Community Network Building' project which was funded by Community Chest of Korea and carried out by the Academy of Korean Social Welfare Administration from November 2006 to November 2009. For the analysis, three out of the 10 networks established in diverse local communities were selected. Based on the survey conducted on the participating organizations and the center organization of each network, we analyzed the structural characteristics of interorganizational network at a network-level. Second, to analyze effectiveness of the whole network, we employed a multiple stakeholders perspective and examined the relations between the whole network's structure and its effectiveness. The findings showed that the whole network effectiveness is higher when the network is more centralized around the hub organization and more stable. The significance of this study is that it is provided and tested a new framework for network effectiveness evaluation by combining the two network effectiveness evaluation framework of Provan and Milward's with evolutionary organizational theory.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.560-569
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• 2015

Crowd funding is the method of raising money for a project, companies from a large group of people via the Internet, in return for future products or equity. Kickstarter is the largest and most successful crowdfunding site where creative projects raise reward based funding. Drawing on dataset of 80,267 projects with combined funding over $1.3b from 8.1m people, this paper suggest that backer select project based on their preference on the project, instead profitability of the project. It suggests that well-established platform and big size of network increases the chance of success of the project due to a ripple effect and blockbuster effects. Clear communication about the project's idea and goal is highly correlated with success. Regular communication on the project site, such as by constant progress updates, helps the success of the project. Equity-based crowdfunding is emerging as an innovative means of raising capital for businesses, so it has been receiving a lot of attention and expectation from the government and the market. The findings of this paper and others will help to get some understanding and insight into equity-based crowdfunding. However, Kickstarter differs from equity-based crowdfunding in the goals of the backers. Kickstarter's backers are not investors, they are contributors. To understand equity-based crowdfunding, the subject will need further study.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.568-570
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• 2002

농업 혁명과 산업혁명 그리고 컴퓨터 인터텟 혁명을 넘어 유비쿼터스 혁명으로 말미암아 하나의 WAN속에 수백개의 네트워크가 존재하고 이런 네트워크는 불루투스, IrDA, 802.11, GPS, 이동 통신 기술 등이 포함한다. 본 논문은 이 중에서 블루투스의 여러 응용 분야 중 대화식 회의가 가능하도록 하는 블루투스 그룹 커뮤니케이션 프로토콜에 대한 연구 및 설계에 관한 내용이다. 그룹 커뮤니케이션 중 참여자들이 자유롭게 참여 및 탈퇴를 통해 그룹 커뮤니케이션을 할 수 있도록 효율적인 그룹 재구성을 위한 알고리즘을 제시하여 해결하도록 한다.

• The Journal of the Korea Contents Association
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• v.19 no.12
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• pp.28-37
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• 2019

It is apparently clear that K-pop has been expanding its influence overseas, with its high growth rate. As a result, attempts have been made to analyze the characteristics of K-Pop in various academic fields. This research quantitatively used the participatory use process of K-Pop contents in voluntary participation and dissemination of the audience in the Trans-Media environment. The author examined the use of participatory K-Pop contents from the view point of reparability through big data content analysis. It has been revealed that K-Pop is spreading globally through social media, fans of various countries like to play K-Pop, and they make up their own content and form a participatory culture. In addition, we looked at when the moments of momentum in which participatory use is soaring were popular content and who was the publisher.

• Information and Communications Magazine
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• v.33 no.2
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• pp.28-38
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• 2016

기존 인터넷의 보안 모델은 모든 통신 상대와 통신 환경에 대한 의심을 기반으로 외부의 공격으로부터 자신을 보호하는 모델이다. 그러나 이 보안 모델은 공격이 지능화됨에 따라 방어도 지속적으로 강화되어야 하는 악순환의 고리에 빠지게 된다. 이런 악순환의 고리를 끊기 위하여 상호 신뢰를 바탕으로 공격자체가 원천적으로 없어지는 신뢰통신 구조를 제안한다. 신뢰통신모델은 먼저 상호신뢰 관계를 가진 제한된 참여자들로 구성된 신뢰 도메인에서 시작하여 외부와의 통신은 잘 정의된 인증 절차에 따라 허용함으로써 도메인의 신뢰 수준을 유지하면서 신뢰 영역을 확장하는 방식을 채택한다. 이 신뢰 모델을 기반으로 신뢰 네트워크 구조를 제안하고 이 구조를 기존의 IP 네트워크에 적용하는 방안을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.254-257
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• 2017

클라우드 컴퓨팅 환경은 가상화 인프라를 제공하며 클라우드 서비스 참여자는 이러한 가상화 자원을 사용하여 서비스를 제공 및 활용한다. 그러나, 클라우드 가상화 환경에서의 보안위협이 지속적으로 증가하고 있는 반면, 안전한 클라우드 가상화를 위한 정책 연구는 미비한 실정이다. 이에 따라, 본 논문은 클라우드 가상화 인프라 중 클라우드 네트워크 가상화의 서비스를 안전하게 제공하기 위한 정책 방안을 제안한다. 제안하는 방안에서 클라우드 네트워크 가상화 환경에서 발생 가능한 보안위협을 도출하고 이에 따른 보안요구사항을 도출한다. 결과적으로, 클라우드 네트워크 가상화 서비스를 안전하게 제공하기 위한 정책 마련 시 클라우드 서비스 제공자가 고려해야할 보안요구사항 도출을 목표로 한다.

• Journal of Internet Computing and Services
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• v.15 no.2
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• pp.109-127
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• 2014

This study is devised out of the recognition that the existing standardization-related research has not sufficiently examined the overall social environment where a standard is actually made and diffused and the roles of the actors and the changes in them in the complex social system where multiple stakeholders exist. Against this backdrop, this study purports to reconstruct the dynamic process of developing and standardizing an innovative technology through a socio-technical approach involved by multiple stakeholders with different interests in the context of a socio-technical institutional environment. The specific goals to achieve the purpose include first, inspecting the characteristics of the interactions between the human actors and between the human and non-human actors in the socio-technical network surrounding a standardization process. Second, the study aimed to observe the activities of the focal actor who led the standardization process and its changing role. To that end, it analyzed the dynamic features of the process of standardizing a HD 3DTV broadcasting technology that took place in South Korea based on the actor network theory. As for the analysis method, the researchers personally took part in the actor network involving the new technology to analyze the dynamic characteristics of the network, applying the qualitative research method of survey and in-depth interviews and exploring the overall dynamics of environment, behavior and technology observed over the course of the entire standardization process.