• Journal of Digital Convergence
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• v.15 no.12
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• pp.147-158
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• 2017

The purpose of this study is to investigate the determinants of the SNS usage time depending on SNS motive of the youth workers. Although previous studies revealed that there are many motivations for SNS usage, it is not known which factors determine usage time of each SNS motive. In this study, we constructed the unbalanced panel data of the Korean Education & Employment Panel data. Among three different SNS motives such as information exchange, social networking, and fun pursuit, gender, physical health, extraversion, and conscientiousness affected the usage of SNS when the motivation was information exchange. When it was personal connection, the size of organization, education, physical health, subjective happiness, job satisfaction, neuroticism, and agreeableness did. When it was fun & interest, foreign company, status of children, subjective happiness, and job satisfaction did. Based on the findings, we discussed theoretical and practical implications.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.301-304
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• 2011

본 연구는 SNS(Social Network Service)인 지인관계 인맥의 인적네트워크 형성 서비스를 위한 인간관계 정보를 관리하고자 스마트폰에 구현한 앱으로써 지인에 대한 정보(SNS 활동 정보)를 필드로 지정하여 저장하고 검색하여 확인하는 과정으로 이루어져 있으며, 여유시간에 관련 사진을 추억하며 감상할 수도 있다. 본 앱은 스마트폰 기반 DB로 저장되어 있으나 마이크로 블로그를 연동하여 데이터를 업데이트하는 기능이 추가 구현되면 보다 편리하게 사용가능하며 저장된 SNS 정보를 이용하여 이메일등 각종 정보를 등록된 지인에게 손쉽게 전송할 수 있다.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.5
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• pp.151-161
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• 2011

Social Network Service is a web-based service that allows the people to construct relationship among users with same interest and supports various activities such as managing personal relations and sharing information or contents. Based on the IS Post-Acceptance model and Success Model, this study examines factors influencing the continuance intention in the SNS. Questionnaires are collected from 275 students who are using the SNS. The results are following: first, the perceived usefulness and satisfaction have positive effect on the continuance intention. Second, the perceived usefulness, confirmation, system quality and information quality have positive effect on the satisfaction. Third, the confirmation has positive effect on the perceived usefulness. Fourth, the system quality and information quality have positive effect on the confirmation. Fifth, the satisfaction is the strongest predictor of the continuance intention and the perceived usefulness is the strongest predictor of the satisfaction.

• The Journal of Korean Association of Computer Education
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• v.16 no.2
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• pp.61-68
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• 2013

SNS is a social networking service that helps people to have a two-way communication, manage their personal relationships and share information. The domestic and international SNS markets have attained a steady growth, and their growth is being more accelerated recently. Under these circumstances, immature students are more likely to show negative cyber behavior. This study attempted to analyze the relationship between the use of SNS, motives of SNS use, the use of active SNS functions, SNS-dependency and views in SNS and negative SNS behaviors among elementary and middle school students. For this, negative cycber behaviors are classified into four stages depending on the severity, for each of which distribution of factors is investigated and the combination of factors to determine each stage is obtained through association rule analysis. As a result, it is found that 85% of the students rarely show negative cyber behaviors, stealing personal information and contacting with strangers are the most frequent negative behaviors, and students with a great dependency on SNS are highly probable to show negative behaviors.

• Journal of Korea Society of Industrial Information Systems
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• v.17 no.5
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• pp.61-73
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• 2012

Social Network Service is a web-based service that allows the people to construct relationship among users with same interest and supports various activities such as managing personal relations and sharing information or contents. Based on the IS Success Model and UTAUT model, this study examines factors influencing the satisfaction of SNS use. Questionnaires are collected from 473 students who are using the SNS. The results are followings: first, the performance expectancy, effort expectancy and social influence have positive effect on the use intention. Second, the facilitation conditions and use intention have positive effect on the use. Third, the system quality, information quality and use have positive effect on the satisfaction. Fourth, the performance expectancy is the strongest predictor of the use intention, the use intention is the strongest predictor of the use and information quality is the strongest predictor of the satisfaction.

• Proceedings of the Korea Contents Association Conference
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• 2006.05a
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• pp.415-418
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• 2006

주 5일 근무제의 도입에 따른 여가활동의 확대로 레저활동에 대한 관심이 높아지면서 레저활동을 관리해줄 수 있는 시스템 즉, 웹을 기반으로 하는 시스템이 필요하다. 이에 본 시스템은 사용자의 편리함을 위해 지역 명으로도 검색 가능하고 플래시 코드로 작성되어 마우스로 클릭만 해도 산에 대한 정보를 검색할 수 있도록 제안하였다. 등산을 즐기는 산악인의 커뮤니티 활성화를 위해 웹 기반 시스템을 통해서 폭넓은 커뮤니티의 활성화와 인터넷 사이트를 통한 정보검색활용과 블로그 서비스와 카페활동을 통해 개인 중심 커뮤니티를 활성화 시키기 위한 산악인 포털 서비스의 활용으로 블로그나 카페를 통한 인맥 네트워크를 구축하여 다양하고 전략적인 방안을 통해 지역별 각종 행사의 정보 및 산에 관련된 모든 정보를 공유하여 온라인상에서의 의미있는 인간관계의 효율적인 구축을 하도록 하였다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.3
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• pp.18-26
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• 2011

Social network services whose users increase rapidly is the online services that reflect social network. They are used for various purposes such as strategy of election, commercial advertisement and marketing, educational information sharing and exchange of medical knowledge and opinions. These services make users form social networks with other users who have common interests and expand their relationships by releasing their personal information and utilizing other users' social networks. However, the social network services based on open and sharing of information raise various security threats such as violation of privacy and phishing. In this paper, we propose a group key management scheme and protocols using key rings to protect communication of small groups in social network services.

• The Journal of the Korea Contents Association
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• v.18 no.5
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• pp.464-471
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• 2018

The business card is regarded as the simplest means as well as a tool the most likely to use as a means of sales. Every day, we are exchanging business cards with many customers, but the paper based business card is easy to discard and difficult for searching information on the business card. As a solution, if we take a photographed business card with a smart phone and make it into a database, we can easily obtain customer information we wanted for sales at any time. In this study, we develop an application solution based on electronic business card database that supports sales management. The system operates in a cloud environment and has various decision support functions such as customer's human network management, customer classification, and finding prospective customers.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.9 no.3
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• pp.47-61
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• 2014

Many angel investors hesitate to invest in early-stage company. Most early-stage company has no sales and only R&D step project or in early approach of market. So it's impossible to evaluate early-stage company quantitatively. Therefore many angel investors depend on CEO's tendency to evaluate company and make decision for investment. The purpose of this study is discover the entrepreneurial characteristics of CEO and the importance level which affect on the angel investors decision making factors for investment. To identify the factors of entrepreneurial characteristics, survey was conducted by Delphi Technique which is involved by 20 experts who is angel investment club members, venture capitalists, CEOs and officers. Three rounds of survey results derived 10 elements of entrepreneurial characteristics for investment decision making factors including reliability, risk sensitivity, passion, perseverance, integrity, leadership, startup experience, organizational management skills, innovation and social networking. In addition, this study derived the importance level of elements of entrepreneurial characteristics based on the AHP(Analytic Hierarchy Process) theory and maintained the logical consistency by pair-wise comparison for each element. As a result of analyzing the importance of entrepreneurial characteristics, the sequence is reliability (18.1%), integrity (15.9%), leadership (11.7%), organizational management skills (10.0%), social networking (9.5%), passion(9.1%), perseverance(8.4%), innovation(8.1%), startup experience(5.3%) and risk sensitivity(3.9%) respectively. The significance of this study is somewhat decrease limit of the uncertainty arising from angel investors and angel investors can help a decision making, by discover factors of entrepreneurial characteristics that can be called the biggest influencing factors among Investor's investment decision-making In early stage companies and compare importance.

• Journal of KIISE
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• v.43 no.1
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• pp.96-105
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• 2016

Recently, social network services have changed by moving towards an open platform where, as well as simply allowing the building of relationships among users, various types of information can be generated and shared. Since existing user reputation management methods evaluate user reliability based on user profiles, explicit relations, and evaluation, they are not suitable for determining user reliability on social media due to few explicit evaluation. In this paper, we analyze social activities on social media and propose a new user reputation management method that considers implicit evaluation as well as explicit evaluation. The proposed method derives positive and negative implicit evaluation from social activities, and generates user reputation information by field in order to consider user expertise. It also considers the number of users that participate in evaluation in order to measure user influence. As a result, it generates the reputation information of users who have no explicit evaluation and creates user reputation information that is more suitable for social media.