• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.36-40
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• 2008

In 1999, the origin concept of blog was introduced in America for sharing information, from the end of 2002. It appealed to people in Korea and also has been developed from the original blog style to the advanced style combining social network service, the reason of unique evolution in Korean blog style is on what the cultural communication method has influenced. Nowadays world is smaller and distance between countries is more and more close than before, by that reason designer peruses global design, but we realize that the globalization should consider local society through blog, therefore this study presents the method of communication and cultural attribute and human relationship that made by old tradition by the means of criticism focused on local culture.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.744-752
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• 2006

사이버 공간이 현실 생활의 일부분으로 통합되어가고 사이버 공간에서의 대인간 의사소통이 보편적인 현상으로 나타남에 따라 사이버 공간에서의 의사소통과 경험 그리고 그것의 영향력에 대한 논의는 그 동안 많이 있어왔다. 그러나 기존의 연구들은 사용자의 행동 특성에 따라 사이버 공간에서의 활동과 영향력, 그리고 그 의미가 달라진다는 점을 간과하였다. 따라서 본 연구에서는 동일한 커뮤니케이션 공간인 싸이월드도 그것에 부여하는 가치와 의미는 사람마다 다르고 따라서 행동도 다를 것이라는 가정하에, 싸이월드에서 나타나는 다양한 이용행동과 활동들을 유형으로 분류하고 그 유형에 따라 싸이월드에서의 의사소통 패턴과 경험, 활동에서의 차이를 살펴보고자 했다. 사전 연구로 진행되었던 사용자 인터뷰를 통해 정리된 행동문항을 전체 설문을 통해 분석한 결과 싸이월드에서 보이는 개인의 행동적 특성을 의미하는 5 개 요인(적극성.몰입, 낯선 사람과의 연결과 정보 추구, 사생활 보호, 단순한 연락 수단, 폐쇄성)이 확인되었고, 이렇게 추출된 행동 요인을 토대로 싸이월드에서 나타나는 3 개의 행동 유형(적극적 활용형, 폐쇄적. 다이어리 추구형, 새로운 관계.정보 추구형)이 구분되었다. 행동 요인의 차이로 표현되는 3 개의 행동 유형에 따른 싸이월드에서의 의사소통 패턴과 싸이월드에서의 활동 그리고 싸이월드 경험에 대한 평가를 분석한 결과 행동 유형간에 유의미한 차이가 있는 것으로 나타났다. 본 연구는 동일한 싸이월드라는 공간이 사용자가 추구하는 가치와 목적에 따라 각기 다른 공간으로 기능하고 있음을 보여주었다는 데에 의의가 있으며, 가치의 차이로 나타나는 행동 유형에 따라 싸이월드에서 소통하는 대상과 방식이 달라지고 경험의 의미 또한 달라질 수 있음을 시사하고 있다.

• Journal of Advanced Navigation Technology
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• v.14 no.5
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• pp.737-744
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• 2010

A Social Network Service(SNS) is the best attracting internet business model and serviced in the several countries. The Facebook is the most popular SNS in a foreign country and the Cyworld is most popular one in Korea. In this paper, after investing and analyzing the existing Social Network Services, I present a new OpenU Social Network Service based on Web 2.0 concepts. This is a next generation internet platform which can be communicated with real-time chatting and share d data and talked during seeing data by collaboration functions OpenU's main characteristics and functions by screen design and implementations are explained. And also OpenU's excellence by comparing with other SNSs system is presented.

• Journal of the Korean Operations Research and Management Science Society
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• v.37 no.1
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• pp.89-104
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• 2012

As the generalization of using computer and the internet, most people, who would decide the acceptance of new information technology (IT), may consider the current systems which have been used so far. The objective of this study was to analyze the relationships between technology acceptance model (TAM) and the switching costs which may incur during switching from the current system into another on. For this purpose, this study suggested the hypotheses, in which continuity cost and setup cost, two types of switching costs in IT adoption, would influence perceived usefulness and perceived ease of use respectively. Moreover, the moderation effects of system types, hedonic system and utilitarian system, on the relationships between switching costs and TAM, were also suggested as the hypotheses. In order to prove the validity of the hypotheses, two groups were surveyed. Before surveying, to the one group who were believed to be a user of 'Cyworld', a new blog service, Naver Blog, was introduced. Similarly, to another group, Google Docs was introduced. The analysis by Partial Least Square (PLS) approach showed that most hypotheses in this study were statistically supported.

• Journal of Information Technology Applications and Management
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• v.19 no.4
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• pp.75-95
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• 2012

This study focuses on examining the determinants of smartphone-based social network services(SNS) use. That is, the study explores the key factors affecting the use of smartphone-based SNS. People who have been using online-based SNS such as Cyworld and Facebook for years are now using mobile-based SNS such as KakaoStory. Under the situation. the study attempts to draw key determinants of smartphone-based SNS use from the studies of TAM, hedonic information systems, and social perspectives. To test the hypotheses, we conducted partial least squares (PLS) analysis using a total of 233 data collected on the users of smartphone-based SNS including KakaoTalk and KakaoStory. The key findings are as follows : first, it is verified that both ease of use and usefulness, two main factors in TAM, had positive effects on smartphone-based SNS use. Second, for enjoyment and escapism considered as the two main factors of hedonic IS characteristics, only the effect of enjoyment on SNS use was significant. Finally, social ties as a factor of social characteristics had the most significant effect on smartphone-based SNS use. The result implies that smartphone-based SNS can be one of the major means of maintaining existing social ties.

• The Journal of Information Systems
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• v.23 no.1
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• pp.53-71
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• 2014

The center of networking is moving toward mobile from PC based computing environment. The number of smartphone users are increasing rapidly today. One of the most popular smart phone applications is mobile SNS such as Kakao Story, Facebook, Twitter, Mobile Cyworld, etc. Mobile SNS means social network services based on mobile communication technology. This research focused on mobile SNS usage of married women who have not enough time for face-to-face communication with their friends to enhance their friendship. Married women in their 30s and 40s have lots of things to do like housework and caring their children. Mobile SNS would help their communication in aspect such of free of space and time. Through Mobile SNS married women can reinforce their personal relationship and self-esteem. Social Information Processing Theory (SIP) is an interpersonal communication theory developed by Walther(1992). Once established, online personal relationships may demonstrate the same relational dimensions and qualities as face-to-face relationships. The theory explains how people get to know one another online, without nonverbal cues, and how they develop and manage relationships in the computer-mediated environment. The result of empirical analysis indicates that marred women's Mobile SNS activities reinforce their personal relationship and self-esteem.

• Journal of Information Technology Services
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• v.10 no.1
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• pp.1-20
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• 2011

The market structure and consumer characteristics are changing dynamically according to internet shopping industry developing based on Web 2.0. But, there is absent typical online service after 'Cyworld.' The social shopping sites based on social networking reflect to present phenomenon that collective intellect, information sharing, participate in making information. The social shopping sites are not limited in particular shopping sites but include all of sites in online. So, consumers can copy various products and display on their own blog provided from social shopping sites and make some purchase reviews and any comments about products can lead transactions among social shopping sites. So, it might be a one of meta-shopping mall like 'Naver.' As the social shopping sites are new form, we just applied to TAM theory to figure out acceptance factors using SEM. The perceived enjoyment affect to usefulness, ease of use and using intension. The perceived ease of use also affect to usefulness and the usefulness affect to using intension positively. But the perceived ease of use was for nothing in using intension. Finally, we provided managerial implications to activate domestic online shopping industry and theoritical meaning using extended TAM.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.1
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• pp.67-80
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• 2007

Nateon Messenger, which has the most number of users in Korea, supports many services such as E-mail, note, Cyworld, SMS, etc. In this paper, we will analyse the authentication traffic which is transmitted and received by the Nateon Messenger. Through performing the replay attack with the authentication information, we will show that an attacker can be authenticated illegally. Furthermore, we will show that other domestic messengers have similar security problems.

• Journal of Digital Convergence
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• v.10 no.10
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• pp.147-154
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• 2012

I made an analysis on the case of Kakao Talk, which is Korean top mobile instant messaging service, to find the growth potential of Korean Social Network Service in the global market. First, I found that unlike the PC messenger services, Kakao Talk is not only unlimited in mobile IM service provider but also has evolving into a social network service firm. Second, attempts with a variety of social services such as photo-based Kakao Story and Marketing Platform for Mobile Game, Kakao Talk successfully landed as a SNS company. Third, with 'Plus Friends' Service, soon-to-be launched Avatar and App Market Service, Kakao Talk is evolving into social media and social platforms. The big success of Kakao Talk in Korean market is expanding and reproducing into Japanese and Southeast Asian markets through the 'Line' serviced by NHN. Line is applying the proven success stories of Kakao Talk to the Japanese and Southeast Asian markets. It means that Kakao and Line, both are mobile IM services, have raised the possibility of success in the global SNS market although online web-based SNS Cyworld has failed in the global market.

• Korean journal of communication and information
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• v.67
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• pp.62-87
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• 2014

The purpose of this study is to understand the social and cultural implication of the activities of taking 'selfies' and the use of Social Network Service(SNS)s through the personal story of a 20s female researcher. She analyzes her own digital photography activities based on the experience of the use of Cyworld photo albums for three years and the use of pictures in iPhone album for fifteen months. The other researcher(40s male) cooperates to answer the questions about how to understand the digital photography activities. We understand the digital photography activities including digital cameras, social network services and smart phones as acts of personal identity configuration and acts of making the personal documentary. As a result, digital photos are used more for archive purpose rather than for document purpose. Also, we found that the digital photography activities can be understood as the interactions between human and non-human actors in the perspective of Actor-Network Theory (ANT).