• The Journal of Society for e-Business Studies
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• v.18 no.1
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• pp.33-55
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• 2013

Information sharing behavior in the Internet has raised much interest. Recently, social network sites provide a new information sharing channel for the users who want to connect with others based on common social background or tastes. Especially, we focus that a social network site becomes one of major routes for information sharing about socially influential issues. Therefore, studying how information is diffused via a social network site may give theoretically, practically significant implication. Based on the assertion, we investigated user's behavior to mediate other user's information messages. We define information mediating behavior as concurrent actions of filtering and distributing behavior of the digital content that is originated from one of the connected users. In this study, we intended to understand the effects of information mediating behavior, and tried to understand characteristics of re-mediating of previously mediated information. Using an agent-based simulation model, we found that information mediating behavior increased the extent of information diffusion significantly. In addition, even a small degree of mediating probability could boost up the level of information diffusion in the case of a re-mediating condition. We believe that those findings provide remarkable insight of research and business application on both of information sharing and diffusion in a social network site.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.92-100
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• 2010

Due to the development of digital appliance, role of TV causes both-way by introducing IPTV, and SNS service causes big change of watching environment and residence environment. There are good conditions on the role of integrated control because it is arranged in the living room which secures movement most effectively and because family members can easily use, and the degree of use is high. Therefore, we infer user's needs by analyzing user scenario and current role of TV in home network environment. Primarily, we collect surveys of development scenario and technology which companies suggest TV applied by home network service, and secondly, we comparatively study scenario which the companies mentioned above suggest through observing user scenario, and study the role of IPTV in the future through actual scenario-based experiment by ethnography. After analyzing user scenario through case study and experiment, there are integrated device studies mainly in company study because it can be made up inside home, security and entertainment. On the other hand, there are patterns of user behavior by scenario experiment mainly in auto-tainment, security, and it showed that it is insufficient for interaction between TV and home media peripheral. Through this paper, we analyze context of home user, and based on this, we could suggest effective use of service development. Also after analyzing user form, we could know it also should be considered of ratio between activity inside home and activity outside home.

• Journal of Korea Port Economic Association
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• v.28 no.3
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• pp.91-110
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• 2012

In the modern management literature, knowledge has been recognized as a new strategic resource enabling a firm to create its competitiveness. Shipping companies under fierce competitive structure need to pay attentions to the utility of knowledge management. A shipping firm may develop its unique service capability by classifying, sharing, and transferring the data, information and knowledge obtained from both inside and outside its global service network. The current study attempts to analyze influential relationships between liner shipping firms' knowledge management and service capabilities. In order to achieve this goal, this study designed a knowledge chain model measuring shipping companies' knowledge management levels and tested its validity and reliability based on a total of 80 replied questionnaires from national and foreign liners. The empirical result presents that supportive and primary activities composing a knowledge chain could exert significant positive influences on the enforcement of shipping service capabilities. This research shows that the utility of knowledge management is adoptable in the maritime industry, and recommends that shipping firms should recognize strategic importance of knowledge and actively pursue knowledge management at an entire firm level.

• Journal of Intelligence and Information Systems
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• v.15 no.4
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• pp.159-182
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• 2009

We construct product networks from the retail transaction dataset of an off-line department store. In the product networks, nodes are products, and an edge connecting two products represents the existence of co-purchases by a customer. We measure the quantities frequently used for characterizing network structures, such as the degree centrality, the closeness centrality, the betweenness centrality and the centralization. Using the quantities, gender, age, seasonal, and regional differences of the product networks were analyzed and network characteristics of each product category containing each product node were derived. Lastly, we analyze the correlations among the three centrality quantities and draw a marketing strategy for the cross-selling.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.5
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• pp.1863-1872
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• 2010

Researches recently made in advanced countries into entrepreneurship found that various resources and information are mainly provided to ventures through social capital, which is a resource capital based on a network, and through corporate entrepreneurship. This research is an exploratory study on the effects of social capital and corporate entrepreneurship of new ventures upon their corporate performance, conducted from the standpoint of dynamic capability. For that purpose, a questionnaire investigation was made of 171 venture entrepreneurs in Korea, and the following are the results of an empirical analysis of responses to the questionnaire. First, it was found that social capital, which is a resource capital based on a network, had a significant effect on corporate entrepreneurship. Second, social capital also had a significant effect on ventures corporate performance. Third, corporate entrepreneurship had a significant effect on corporate performance. These results imply that social capital and corporate entrepreneurship have a significant effect on the corporate performance of ventures, which have innate disadvantages concerning the supply of resources. On the other hand, ventures, which encounter relatively more intense demands for change and renovation, can be managed in a sustainable manner just when they adequately accumulate their social capital and utilize their external resources and appropriately conduct their corporate entrepreneurship activities.

• Journal of Service Research and Studies
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• v.2 no.1
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• pp.13-27
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• 2012

Companies see a new business opportunity in the increased popularity of social network services and the related studies are also gaining more attention. This study attempted to analyze the social networks and thereby find a pattern in the use of social network services. Network users' pattern has been categorized by their purpose of use. Among various social network services, we selected the Facebook and its users were analyzed by a network analysis tool called NodeXL. In the end, several subgroups have been identified in a seemingly homogeneous network. Furthermore, the network shape differences according to the usage of social network services has been studied by comparing "friends" of an individual Facebook user with those of the K University Facebook page.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.65-66
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• 2016

본 연구는 국내 창업초기투자생태계의 현황을 진단하고 향후 진화의 방향과제를 도출하는 것이 목적이다. 2013년 정부의 투자중심 창업지원 생태계 구축정책에 힘입어 국내 창업초기 투자생태계는 보다 세분화되고 활성화 되고 있다. 종전의 엔젤투자와 VC 투자자로 양분되었던 벤처투자시장에, 특히 창업초기단계 개인엔젤투자조합, 전문엔젤, TIPS, 엑셀러레이터와 창업초기 전용VC 펀드인 인큐베이팅펀드와 청년창업전용투자펀드등에서 최근 마이크로VC펀드에 이르기까지 다양한 창업초기 VC 펀드가 창출되며 다양한 그룹의 투자자들이 생성 진화중이다. 이렇게 창업초기 다양한 투자자그룹이 생성되고 성장하고 있는 이면에는 정부의 매칭투자와 투자연계 R&D 자금이 큰 역할을 하고 있어 투자자들에게는 창업기업에게 Valuation과 투자 위험 관리에 큰 도움을 주고, 창업기업에게는 과도한 지분의 희석 없이 투자자금이 가진 장점의 혜택을 극대화하고 있다. 그러나 본 연구의 국내창업초기 투자생태계 진단결과, 국내 창업투자생태계는 다양한 투자자그룹이 생성되고 성장하고 있지만 서로 다른 투자자 그룹 간 공동투자나 후속투자 연계 등의 협업적 활동 및 회수네트워크 연계 등 활동은 아직 미흡하다. 또한 투자분야 자체가 모바일 및 인터넷서비스 분야에 집중되고 있어, 상대적으로 긴 시간의 보육과 성장검증기간 및 규모 있는 투자를 필요로하는 제조분야는 비중이 약한 편이어서 투자 대상 사업 분야의 다변화 필요하다. 뿐만 아니라 국내 창업초기투자생태계는 창업의 글로벌 사업성과를 내기 위한 글로벌 투자자들과의 연계구조는 미흡한 상황이어 이를 촉진할 방안이 요구된다고 할 수 있다.

• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.48-59
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• 2018

Recently, network technology has been used in various fields due to development of network technology. However, there has been an increase in the number of attacks targeting public institutions and companies by exploiting the evolving network technology. Meanwhile, the existing network intrusion detection system takes much time to process logs as the amount of network log increases. Therefore, in this paper, we propose a Spark-based network log analysis system that detects unstructured network attack pattern. by using Snort. The proposed system extracts and analyzes the elements required for network attack pattern detection from large amount of network log data. For the analysis, we propose a rule to detect network attack patterns for Port Scanning, Host Scanning, DDoS, and worm activity, and can detect real attack pattern well by applying it to real log data. Finally, we show from our performance evaluation that the proposed Spark-based log analysis system is more than two times better on log data processing performance than the Hadoop-based system.

• Journal of Technology Innovation
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• v.12 no.3
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• pp.25-47
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• 2004

The globalizing economic processes based on knowledge-based economic systems have changed the environment of competition between corporations fundamentally. As a result, all corporations must carry out their own activities for innovation in order to strengthen their competitiveness continuously. However, it may be difficult for the companies to meet the demand of rapidly changing markets as well as technological changes by themselves. Therefore, most of companies intensify their interdependent collaboration with other corporations for carrying out innovative activities. This is a process of building innovation networks. Innovation networks can provide opportunities to learn latest technologies and at the same time reduce uncertainties for the future. In fact, innovation networks enable not only to provide information about technology, market etc. but also to create learning processes between innovative actors. Thus, innovation networks are the most significant factor to stimulate innovative activities as well as to generate the growth of companies. This paper argues about impacts of innovation networks on the result of innovative activities. Furthermore, this focuses on the analysis of characters of corporations as well as patterns between innovation networks and innovation results.

• Information and Communications Magazine
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• v.31 no.5
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• pp.39-45
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• 2014

기업활동에서 IT에 대한 의존도가 증가함에 따라 기업들은 다양한 소프트웨어 및 하드웨어 플랫폼에서 제공되는 서비스들을 운영하고 있다. 서비스들이 보급, 확대되는 과정에서 새로운 보안 취약점들이 나타나고, 이들 취약점을 악용한 기업정보의 유출 및 해킹 등 보안사고의 발생도 비례하여 증가하고 있다[1]. 특히 다양한 유형의 사업을 운영하는 지주회사 또는 대기업 그룹사의 경우, 사업영역별로 운영 중인 IT 인프라의 보안 취약점이 네트워크로 연결된 타 사업용 IT 인프라에 대한 사이버 침해의 통로로 악용될 가능성이 있다. 이 같은 문제의 해결을 위해 기업들은 사업영역 별로 보유한 IT 인프라의 보안 취약점 진단과 대응을 위한 솔루션들을 도입, 운영해 오고 있다. 하지만 기업의 보안 거버넌스 관점에서 보안 취약점 관리도 전사적인 보안 정책과의 연계 강화, 투자 중복의 방지, 효과적인 관리와 통제에 대한 필요성이 대두되기 시작했다. 보안 거버넌스 체계 강화에 대한 기업의 요구변화에 맞춰 보안 취약점의 통합관리를 지원하는 상용 솔루션들이 일부 출시되고 있으나 기업들이 기 운영하고 있는 개별 취약점 진단 솔루션과의 연동, 로그관리 및 기업이 요구하는 특화된 기능 구현 등의 어려움이 도입에 장애가 되고 있다. 따라서, 대기업을 중심으로 개별 보안 취약점 진단 솔루션들을 연동하여 기업보안 거버넌스를 효과적으로 지원할 수 있도록 취약점 관리업무 프로세스의 재설계와 함께 취약점 진단 통합관리 체계를 구축하고 있다[2][3][4]. 본고는 보안 취약점 관리업무의 문제점을 소개하고, 최근 대 기업을 중심으로 활발히 구축이 추진되고 있는 웹 기반의 취약 점 진단 통합관리 체계의 개념, 기능 및 운영 프로세스를 소개한다. 아울러, 기업 IT 인프라에 대한 보안 취약점 진단 데이터를 축적하여 기업 내부의 보안위험 요소를 사전예측하고, 정보보호의 투자 대비 효과(ROSI: Security Return on Investment)를 효과적으로 산정하는 인프라로서 활용 가치를 소개한다.