• 한국IT서비스학회지
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• 제12권2호
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• pp.31-53
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• 2013

Web 2.0 has affected existing e-commerce and created a new business model of e-commerce, known as social commerce. Social commerce is a subset of e-commerce using social network services and is emerging as an important platform due to increased popularity of social networking services. This study focuses on analyzing the factors that influence the shopping value and intention to repurchase of social commerce users. Based on prior researches, we develop a research model, including individual characteristics of social commerce users (Collectivism, Price Sensitivity, Impulse Buying) and social commerce characteristics (Cost saving, Product Variety, Shopping Convenience). Furthermore, this study proposed the moderating effect of Perceived Security and the relationship between shopping value and intention to repurchase. To empirically validate, the data were collected from 220 social commerce users. The results indicated that individual characteristics (collectivism, price sensitivity, impulse buying) were positively related to hedonic shopping value. In addition, social commerce characteristics (cost saving, shopping convenience) were positively related to utilitarian value. The shopping value(hedonic and utilitarian) had a significant influence on intention to repurchase. The moderating effects of perceived security also was significant. Lastly, the implications for theory and practice are discussed.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권7호
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• pp.814-818
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• 2010

온라인 소셜 네트워킹 서비스는 현실에 존재하는 인적 네트워크를 온라인 상에서도 형성할 수 있는 서비스를 제공해준다. 최근 급격하게 확산되고 있는 트위터는 온라인으로 형성된 소셜 네트워킹 서비스가 무한히 커질 수 있음을 보여주었다. 본 연구에서는 트위터 메시지와 장소 인식 기술을 통해 근처에 있는 트위터 친구의 존재를 알려주는 서비스를 제안한다. 본 서비스가 제공해주는 기능을 효과적으로 활용하여 오프라인 만남이 활성화되면 온라인으로 형성된 소셜 네트워크가 현실에 존재하는 인맥으로 확장되는 효과를 거둘 수 있다.

• Journal of Information Technology Applications and Management
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• 제20권2호
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• pp.127-146
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• 2013

The online social networking services (SNS) have been growing as the means of communication. In this study, we investigated word-of-mouth (WOM) effect under the SNS environment and evaluated the impact of message sender's influence on the WOM effect. Especially, this study focused on the betweenness centrality calculated through the social network analysis (SNA) of SNS network information, and proposed it as the measure of WOM message sender's influence, SNA may provide more accurate and objective measures than subjective self-reporting survey method. Fifty-one Facebook users responded to each of their four Facebook friends, who had been selected based on their betweenness centrality, Statistical analyses were performed using the responses and the betweenness centralities of the Facebook friends. The results showed that the direction (positive vs, negative) of a WOM message in SNS had an impact on the attitude of the message receiver toward the product. Moreover, the betweenness centrality of the message sender as well as his/her opinion leadership had a moderating effect on the WOM effect. Opinion leadership is a measure that has been frequently used for indicating the influence of WOM message sender in the previous studies. Considering the result that the betweenness centrality of the message sender was Significantly correlated to his/her opinion leadership, the betweenness centrality can be used for indicating the influence of WOM message sender.

• 지식경영연구
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• 제12권5호
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• pp.41-57
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• 2011

Social commerce is simply a kind of e-commerce by adopting SNS(Social networking service). It has been spread as SNS is widely used all over the world. In this situation, companies attempt to make the best use of social commerce to understand its advertising effect and to sell more products and/or services they provide. Although social commerce is a recent trend in Korea, it is necessary for companies to find a way to effectively adopt and utilize the social commence. Therefore, the focus of this study is to identify critical success factors for social shopping. We generated 40 items to measure 8 constructs. Using data collected from 300 respondents who have experienced both SNS and social shopping, we analyzed our model and its hypotheses. The analysis result shows that social shopping customers don't use SNS to get information when they purchase products and/or services in social shopping web sites.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 춘계학술대회
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• pp.568-570
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• 2013

NFC(Near Field Communication)는 P2P(Peer-to-Peer) 통신을 제공하며 RFID를 능가하는 근접 비접촉 기술로 임의의 디바이스 형태로 언제 어디서든 전체 서비스에 접속할 수 있는 기술이다. NFC는 근거리 무선 기술로 데이터 교환, 연결 초기화, 보안 스마트 키, 입장권 구입, 접속제어 등의 서비스를 제공하기 위해 설계되었다. 본 논문에서는 소셜 네트워킹 응용을 위한 NFC 서비스 사례를 연구하며 스마트 디바이스와 서버 모델을 위한 NFC P2P 기반의 SNS 응용 신호흐름을 제안하였다.

• 디지털융복합연구
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• 제14권8호
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• pp.313-318
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• 2016

현대사회에서 추천 서비스는 클라이언트-서버 기반의 인터넷 서비스에서 소셜 네트워킹으로 변화되고 있다. 특히 최근에는 크라우드소싱과 소셜 네트워킹을 통하여 사용자에게 개인화 추천을 서비스하고 있다. 소셜 네트워크 기반 시스템은 메모리와 모델 기반 협력적 필터링을 이용한 추천 서비스 제공 방식과 목적에 따라 분류할 수 있다. 이에 본 논문에서는 소셜 네트워크 기반의 {사용자-연관 디자인} 행렬을 이용한 감성 디자인 추천을 제안한다. 제안하는 방법은 소셜 네트워크 기반에서 {사용자-연관 디자인} 행렬을 구성하고 메모리 기반 협력적 필터링을 이용하여 감성 디자인을 추천한다. 제안한 방법의 성능평가는 정확도와 재현율 검증을 진행한다. 정확도의 검증은 소셜 네트워크 기반의 추천 적용유무에 따른 F-measure를 사용한다.

• 디지털산업정보학회논문지
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• 제9권3호
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• pp.31-38
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• 2013

The evolution of the Web from Web 1.0 to Web 2.0 has brought up new platforms as SNSs(Social Network Service) that are used by users to articulate and manage their relationships. SNSs are an online phenomenon which has become extremely popular. A SNS essentially consists of a representation of each user, his/her social links, and a variety of additional services. SNSs are increasingly attracting the attention of academic and industry researchers. What makes SNS unique is that they have a relationship with friends. The friend recommendation is one important feature of social networking services. People tend to trust the opinions of friends they know rather than the opinions of strangers. In this paper, we propose an efficient data processing method for social data. We study previous researches about social score in social network service. Our ESS(Efficient Social Score) is computed by both friendship weight and score of a document that was tagged by a user's friends. Our experimental results also confirm that our method has good performance.

• 산업경영시스템학회지
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• 제41권1호
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• pp.24-38
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• 2018

Since a social networking service (SNS) isconsidered as an effective means to communicate and interact with customers, companies are trying to utilize SNS effectively. There is a lack of theory relating to the attributes of SNS. This study aims to investigate the attributes of SNS to classify SNS. Based on the social network theory, and previous studies on internet, blog, homepage, communication attributes, this study proposes the seven attributes to classify SNS: interaction, communication, entertainment, information, sharing, intimacy and connection. A pre-test, a pilot test and a main test are conducted. In the main test, 239 SNS users are participated. Through a factor analysis this study verifies the seven attributes of SNS. An analysis of variance with multiple comparisons of $Scheff{\acute{e}}$ method identifies that three attributes, interaction, communication and connection, are found to play significant roles to differentiate SNS. Looking at the overall mean values of the SNS by attribute, interaction, sharing, entertainment, intimacy and communication were relatively high in Facebook. Facebook showed higher values in attributes of interaction, sharing, entertainment, intimacy and communication. Twitter shows the relatively high scores for information and connection. Regarding interaction, Facebook shows higher scores than Twitter and Cyworld. For connection, Cyworld showed a significantly lower score than Twitter and Facebook. Cyworld was separated from the others in the light of communication. Cyworld is relatively weak in communication as it is limited to the message exchanges. The results will help in identifying major attributes for each SNS and classifying SNS.

• 지식경영연구
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• 제15권2호
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• pp.89-106
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• 2014

As an empirical study on the psychological side effects of using Social Networking Services (SNS), this study aims to identify the reality of negative emotion of using SNS and to predict its consequences. To this end, a measurement tool was developed through literature review, in-depth interview with users and expert review to induce negative emotional factors that can arise while using SNS. An exploratory factor analysis was performed for a total of 24 measurement items, which then were divided into the following 6 factors: 'concern over privacy,' 'burden from undesired connection,' 'relative deprivation,' 'a sense of alienation,' 'concern over reputation' and 'negative feeling about simple relationship.' Also, the relationship between the 6 negative emotional factors and psychological dissonance was analyzed. The results indicate that all the factors, except relative deprivation and a sense of alienation, affect psychological dissonance. It was also found that psychological dissonance, which implies a conflicting condition from using SNS, significantly affects the behavior that possibly reduces and limits the use of SNS. In other words, the users who have experienced psychological dissonance respond passively by avoiding the use of SNS to resolve the dissonance. The results of this study provide the base for explaining the psychological side effects of using SNS, which have been understood at a phenomenal level, such as 'Facebook depression' or 'SNS stress.' In addition, this study is of significance as it helps understand the psychological mechanism by identifying the relationship between negative emotion and use behavior with the theory of cognitive dissonance.

• 한국멀티미디어학회논문지
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• 제19권8호
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• pp.1466-1470
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• 2016

As individuals create many contents anytime and anywhere together with the widespread dissemination of smart devices as well as various social networking services (SNS), content centric networking (CCN) has regarded as a new networking technology. However, CCN is exposed to malicious attacks on the mobility management of mobile content sources during handover and high volume of control messages. Therefore, this paper presents a secure duplicate name detection (SecureDND) mechanism without additional control messages by signed information and secure token. It is shown from the performance evaluation that the proposed scheme can provide low control overhead, which results in the network scalability.