• Journal of Navigation and Port Research
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• v.42 no.6
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• pp.529-538
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• 2018

The port industry is an important national industry which significantly affects Korea's imports and exports which are centered on economic structure. For instance, the Port of Busan, which handles 75% of domestic container freight volume, is expected to become increasingly critical for container liner routes. For this reason, there have been continued efforts to expand freight service to attract international freight volume. This study analyzes the structural characteristics of the port network connected to the Port of Busan by analyzing the pattern of the container liner route from 2012 to 2016 by using social network analysis. According to the Port of Busan's liner route network, the port with the highest degree of centrality, closeness centrality, and betweenness centrality was found to be the Port of Singapore. The comparison of Busan's annual container handling rank by countries and the port center network analysis of Port of Busan rank was found to be different. As a result, it was established that China's East Port, which occupies a high percentage of the volume of cargo handled by Port of Busan, is not a hub port of Busan when viewed on the Busan's container terminal liner network. In addition, even if the number of Port of Busan container liner service increases, it is estimated that the vessels to be added to the fleet will be limited to small to medium sized, or that Busan port has characteristic of a feeder port for the Port of Singapore, according to the network.

• Journal of Intelligence and Information Systems
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• v.15 no.1
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• pp.87-102
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• 2009

With the growth of Web 2.0, lots of services allow yours to post their personal information and useful knowledges on networked information spaces such as blogs and online communities etc. As the services are generalized, recent researches related to social network have gained momentum. However, most social network services do not support machine-processable semantic knowledge, so that the information cannot be shared and reused between different domains. Moreover, as explicit definitions of relationships between individual social entities do not be described, it is difficult to analyze social network for inferring unknown semantic relationships. To overcome these limitations, in this paper, we propose a social network analysis system with personal photographic data up-loaded by virtual community users. By using ontology, an informative connectivity between a face entity extracted from photo data and a person entity which already have social relationships was defined clearly and semantic social links were inferred with domain rules. Then the inferred links were provided to yours as a visualized graph. Based on the graph, more efficient social network analysis was achieved in online community.

• Journal of Ethics
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• no.84
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• pp.217-242
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• 2012

This essay aims to explore the importance of ethics education in Korean multicultural society. In 2011, it is reported by the Ministry of Education, Science and Technology that the final goal of Korean multicultural ethics education is to establish the foundations of National identity and of moral values in general. It might be a ideological tool, however, that can suppress the minority in Korea. In that sense, an orientation of ethics education in Korean multicultural society is basically to consider all moral agents in ethics. To give any solution, therefore, an attention will be paid to the notions of emotion and the likeness of moral fibre. Most important is that we have certain emotions which are in society beyond individual feelings. It is the only ethical subject and existence who we can have them. In that point, having them enables us to make any decision on the ground of moral values. By the quality of the likeness of moral fibre, furthermore, we can recognize and exercise moral values together without any difference in multicultural society. This makes sense of an identity as a Korean. Therefore, having emotions is helpful in taking the moral foundations of Korean multicultural society and the self-recognition of a Korean in the sense of the likeness of moral fibre give an ethical direction to us, the Korean multicultural society of ethical culture in the future.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.733-743
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• 2006

블로그는 현재 광범위하게 대중성을 얻고 있는 온라인 커뮤니케이션의 최근 형태이며, 블로그 사용이 빠른 속도로 주류를 형성해 나가고 있다. 초기 HCI 분야에서의 온라인 커뮤니케이션(CMC)에 대한 연구는 사용자가 시스템의 소프트웨어나 하드웨어의 인터페이스를 어떻게 대하는가 하는 점에 초점이 맞춰졌었지만, 최근에는 온라인 커뮤니티, 블로그처럼 사용자들이 인터넷을 통한 사회화가 어느 때보다 활발하게 이루어지고 있기 때문에, 시스템의 사용성에 대한 고려만으로는 충분하지가 않다. 즉, 시스템이 어떻게 사용자들 간에 사회적 상호 교류를 지원할 수 있고, 이러한 사회적 교류가 원활하게 이루어지기 위해서 시스템이 어떻게 설계되어야 하는 지에 대한 이해가 필요하다. 따라서 본 연구에서는 실제 블로그 이용자들을 대상으로 이들과 상호 연결된 블로거들과의 온라인에서의 관계적 행위를 살펴보고, 또한 이러한 행위가 네트워크 구조적 특성과는 어떠한 상관 관계를 가지는지를 심층 인터뷰와 사회 네트워크 분석법을 이용하여 탐색적으로 알아보고자 한다. 본 연구 결과를 통해서 얻은 사용자들의 온라인 교류 시 보이는 행위적 특성을 바탕으로 온라인 개인 미디어 서비스 설계에 대한 가이드라인을 제안해 보고자 한다.

• KDI Journal of Economic Policy
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• v.36 no.2
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• pp.175-196
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• 2014

This paper is a theoretical attempt to analyze and understand Yeonjulmang and Yeongyeolmang, which are terms for social networks with negative and positive connotation respectively in Korean Sociology. To do that, we analyze a social network where unilateral help are reciprocated. A social network in this context is a network where the past behaviors of its members are transmitted. With the information how the members behaved before, a social norm can emerge in the network, which facilitate the indirect reciprocation of unilateral help. In this norm, an agent's helping now will be rewarded by his being helped in the future. Since the reward happens in the future, this norm may not be sustained even if it is efficient. To sustain the reciprocation of the help, a norm can evolve to punish the violation of the norm more severely. If the punishment becomes too severe, the reciprocation of the help can be sustained even if it is not efficient any more in that the cost of help exceeds the benefit. If we allow the exit of the network, members have incentive to do it as belonging to the network is not beneficial any more. Then the social network may collapse. To avoid the collapse of the network, the exclusive norm, which exclude even mutually beneficial relationship with outsiders, may emerge. This can explain the emergence of Yeonjulmang, or a closed network, which is inefficient in double senses; 1) it may sustain inefficient reciprocation of help, and 2) the mutually beneficial relationship is excluded between an insider and an outsider of the network.

• Communications of Mathematical Education
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• v.10
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• pp.155-168
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• 2000

현대 사회를 살아가는 교양을 갖춘 시민과 지혜로운 소비자가 되기 위해서 통계적 지식 및 확률적 지식은 필수적인 능력으로 간주된다. 자료 주도적 확률과 통계의 학습이란 학생들이 스스로 자료를 수집하고, 조직하고, 표현하고, 해석하는 직접적인 활동을 통해 확률과 통계의 개념, 원리의 터득은 물론 추론과 의사소통능력, 문제해결력 등을 기를 수 있는 학습형태로서, 이런 학습을 완수한 학생들은 수학의 유용성 및 실생활과의 연결성을 더 잘 이해할 수 있게 된다. 따라서, 모든 확률과 통계 수업에서는 실제자료를 학생들이 직접 다루는 활동이 수행되어야 하며, 이를 위한 테크놀로지의 적절한 사용이 병행되어야 한다. 이 글에서는 이러한 자료 주도적 확률과 통계의 학습의 예와 그에 병행되는 그래픽 계산기의 활용 방안을 제시하고자 한다.

• Review of KIISC
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• v.20 no.1
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• pp.74-87
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• 2010

우리나라에서 국민식별번호로 사용되고 있는 주민등록번호는 국민을 유일하게 식별할 수 있는 유일식별성과 그로 인한 국민정보 관리편리성으로 인해 오랜 기간 공공 및 민간부문에서 사용되어 왔다. 특히 정보시스템의 일반화되면서 행정기관이나 민간기업들이 서비스 제공에 필요한 국민 또는 고객의 정보를 관리하면서 식별정보로써 그리고 정보들을 연결하는 연결자로써 널리 사용해 왔다. 비록 지금까지 오랜 기간 주민등록번호가 공공 및 민간분야에서 개인식별번호로 널리 사용되어 왔지만, 최근 발생횟수가 증가되고 사회적, 경제적 피해가 심각해지고 있는 주민등록번호 도용과 그에 따른 프라이버시 침해 문제의 심각성을 고려할 때 새로운 체계의 국민식별번호 및 관련 인프라에 대해 연구가 필요한 시점이다. 따라서 본 고에서는 현재 우리나라의 온라인, 오프라인 환경에서 개인식별번호로서 널리 사용 중인 주민등록번호의 보안 및 프라이버시 관점에서의 문제점을 살펴보고 이를 보완할 수 있는 새로운 국민식별번호체계를 제안한다.

• The Korean Journal of Applied Statistics
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• v.34 no.1
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• pp.25-38
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• 2021

Recently the need for network surveillance to detect abnormal behavior within dynamic social networks has increased. We consider a dynamic version of the degree corrected stochastic block model (DCSBM) to simulate dynamic social networks and to monitor for a significant structural change in these networks. To apply a control charting procedure to network surveillance, in-control model parameters must be estimated from the Phase I data, that is from historical data. In network surveillance, however, there are many situations where sufficient relevant historical data are unavailable. In this paper we propose a self-starting Shewhart control charting procedure for detecting change in the dynamic networks. This procedure can be a very useful option when we have only a few initial samples for parameter estimation. Simulation results show that the proposed procedure has good in-control performance even when the number of initial samples is very small.

• Journal of Intelligence and Information Systems
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• v.28 no.2
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• pp.33-55
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• 2022

This study analyzed the comments and the replies on internet news related to the presidential election in order to verify whether online discussions are properly conducted. According to Habermas' public sphere theory, discussions is an effort among participants to reach a social consensus through the deliberations that are based on open communications. We propose that if such discussions properly take place through the act of writing in the Internet space, the comments and the replies will show a certain difference in terms of the structure and the content. To validate, this study analyzed more than 40,000 comments collected from Daum News portal site in Korea. The topic of the related news was the presidential election, because it is a topic of which people are highly interested in and that comments are actively running. The result of the t-test and topic modeling result show that all the hypotheses were supported thus we conclude that online discussions properly took places. This study also showed that online comments are not chaotic remarks that relieve people's stresses, but rather an outcome of the deliberation processes moving towards a social consensus.

• Korean journal of communication and information
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• v.79
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• pp.226-259
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• 2016

Drawing on the autonomist Marxist concepts of 'social factory', 'immaterial labour', and 'precarity', this paper discusses the changed nature of labour, life and social relations in contemporary informational capitalism. More specifically, it first traces back to the early autonomist (operasimo) theories of 'social factory' and 'class composition' and then discusses how these earlier theories were developed into the concept of 'immaterial labour' by a group of later autonomist theorists such as Paolo Virno, Maurizio Lazzarato, Micheal Hardt, and Antonio Negri. Then, it reviews how the concept of immaterial labour was taken up to understand the nature of labour in digital economy within the tradition of Cultural Studies, closely intersecting with the critiques of 'creative labour'. Finally, it discusses how the changed nature of labour is interrelated with the neoliberal labour forces transformations such as casualization of employment and increasing insecurity in employment and life, which the autonomist explores with the concept of 'precarity', the material condition of immaterial labour.