• 한국정보시스템학회지:정보시스템연구
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• 제22권1호
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• pp.117-143
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• 2013

Social media have been rapidly and widely adopted in various areas, and tourism industry can be one of potential growing areas. Tourist and travelers would like to share their photos and stories as well as find others' experiences. People are doing their activities through social media. Regarding relaxing entertainments, information sharing, escapism, social interaction, tourism activities are being paid attention by majority of users in social media. However, Although people have various motivation for using social media, academically researchers have not actively studied on the phenomenon arising from tourism industry. Therefore, this study aims to the reasons for tourism information searching motivational factors of social media that influence perceived value and its consequences such like before-searching, during-searching, and after-searching and divided social media into two types according to the level of social presence, and then empirically verified them. Antecedent variables divided into benefits including perceived usefulness and information quality and sacrifices including complexity and perceived effort. Our analysis results show that both of dimensions had the greatest effect on perceived value of social media use, which affect the consequences.

• 디지털융복합연구
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• 제11권2호
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• pp.279-285
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• 2013

정보통신망과 컴퓨터 기술의 발전은 수많은 정보 및 지식을 생산해 내는 기반이 되었고, 최근 대중화가 가속화 되고 있는 스마트디바이스는 사용자가 원하는 정보와 지식을 쉽게 획득할 수 있는 도구로 사용되고 있다. 이에 본 논문에서는 인터넷 정보와 소셜네트워크를 활용한 스마트 디바이스 기반의 지식공유 시스템을 제안한다. 제안하는 시스템은 사용자 질의에 대해 인터넷 정보 검색, 축적된 지식 검색, 소셜네트워크 상의 지인 답변 기능으로 구성된다. 제안한 시스템의 효용성 분석을 위하여 사용자 만족도 평가를 실시하였다. 실험결과 스마트디바이스를 이용한 지식공유 시스템이 일반 정보검색엔진에 비해 통계적으로 유의미한 만족도를 나타냈다.

• Journal of Information Science Theory and Practice
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• 제8권3호
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• pp.6-14
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• 2020

On information markets, we can identify different relations between sellers and their customers, with some users paying with money, some paying with attention, and others paying with their personal data. For the description of these different market relations, this article introduces the notion of arity into the scientific discussion. On unary information markets, customers pay with their money; examples include commercial information suppliers. Binary information markets are characterized by one market side paying with attention (e.g., on the search engine Google) or with personal data (e.g., on most social media services) and the other market side (mainly advertisers) paying with money. Our example of a ternary market is a social media market with the additional market side of influencers. If customers buy on unary markets, they know what to pay (in terms of money). If they pay with attention or with their personal data, they do not know what they have to pay exactly in the end. On n-ary markets (n greater than 1), laws should regulate company's abuse of money and-which is new-abuse of data streams with the aid of competition (or anti-trust) laws, and by modified data protection laws, which are guided by fair use of end users' attention and data.

• 한국경영과학회지
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• 제35권2호
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• pp.89-114
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• 2010

This study empirically investigated the effects of the target costing system as well as information technology(IT) infrastructure on the knowledge management processes(i.e., socialization, externalization, combination and internalization) and the performance of a firm. This study also examined an impact of the social capital(i.e., inter-departmental communication, trust, cooperation and integration) on the adoption and development of the target costing and the IT infrastructure. The results of this study showed that inter-departmental communication, trust and integration have a significant positive impact on the adoption of the target costing. It was also found that the effects of inter-departmental communication and integration on the development of storage and transfer infrastructure are significant and positive. However, in the adoption of search infrastructure, only the impact of inter-departmental integration was significant. The results of regression analyses presented that the target costing has significant influence on the four processes of knowledge management. It was also observed that the effects of storage and transfer infrastructure on combination are significant and positive. In search infrastructure, the impact on combination and internalization was significant. According to the results of this study, it was found that when the adoption level of the target costing is high, search infrastructure mainly affects the three processes(i.e., socialization, combination and internalization). However, under a low adoption level of the target costing, the impact of storage and transfer infrastructure on the whole processes was significant and positive. Thus, it is assumed that storage and transfer infrastructure complements a low level of the target costing adoption through the active transfer and sharing of explicit and tacit knowledge.

• 한국콘텐츠학회논문지
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• 제13권11호
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• pp.198-212
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• 2013

본 연구는 대학졸업예정자들의 구직의도에 영향을 미치는 선행요인들을 밝히고, 요인들간의 구조적인 관계를 분석하는데 그 목적이 있다. 이를 위해 지방 국립대 4학년 재학생 231명을 대상으로 구조방정식 모델을 검증하였다. 통계분석은 SPSS 20.0 프로그램과 AMOS 18.0 프로그램을 사용하였다. 구조방정식을 이용한 주요 분석결과는 다음과 같다. 첫째, 구직효능감은 구직네트워크와 구직제약성의 구직의도에의 효과에 매개역할을 하고 있었으며, 구직명료성은 구직의도에의 직접 효과는 없었지만, 구직효능감을 통한 정(+)의 간접효과를 보여 주었다. 둘째, 구직태도와 구직효능감은 구직의도에 정(+)의 효과를 나타냈다. 셋째, 구직 제약성은 구직태도에 부(-)의 영향을 주고 있으며, 구직네트워크와 구직제약성은 구직효능감에 유의한 정(+)적 효과를 나타내었다. 넷째, 구직네트워크와 구직효능감의 향상은 구직명료성을 상승시키는 효과를 보여주었다. 다섯째, 본 연구결과를 통하여 대학졸업예정자들의 구직효능감 향상과 긍정적인 구직태도의 함양 및 구직관련 사회관계망의 확보가 요구됨을 확인할 수 있다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권6호
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• pp.1311-1326
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• 2010

Peer-to-peer (P2P) networks consume the most bandwidth in the current Internet and file sharing accounts for the majority of the P2P traffic. Thus it is important for a P2P file sharing application to be efficient in bandwidth consumption. Bandwidth consumption as much as downloaded file sizes is inevitable, but those in file search and bad downloads, e.g. wrong, corrupted, or malicious file downloads, are overheads. In this paper, we target to reduce these overheads even in the presence of high volume of malicious users and their bad files. Sybil attacks are the example of such hostile environment. Sybil attacker creates a large number of identities (Sybil nodes) and unfairly influences the system. When a large portion of the system is subverted, either in terms of the number of users or the number of files shared in the system, the overheads due to the bad downloads rapidly increase. We propose ELiSyR, a file search protocol that can tolerate such a hostile environment. ELiSyR uses social networks for P2P file search and finds benign files in 71% of searches even when more than half of the users are malicious. Furthermore, ELiSyR provides similar success with less bandwidth than other general efforts against Sybil attacks. We compare our algorithm to SybilGuard, SybilLimit and EigenTrust in terms of bandwidth consumption and the likelihood of bad downloads. Our algorithm shows lower bandwidth consumption, similar chances of bad downloads and fairer distribution of computation loads than these general efforts. In return, our algorithm takes more rounds of search than them. However the time required for search is usually much less than the time required for downloads, so the delay in search is justifiable compared to the cost of bad downloads and subsequent re-search and downloads.

• 한국컴퓨터정보학회논문지
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• 제26권8호
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• pp.39-46
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• 2021

프랜차이즈 스토어를 대상으로 소셜 빅데이터 분석을 수행할 경우, 프랜차이즈에 속한 여러 분점의 리뷰들이 함께 수집될 수 있어 분석 결과가 왜곡될 수 있다. 이 경우 분석 정확도를 높이기 위해서는 분석 대상이 아닌 타 분점의 리뷰들을 적절히 필터링할 수 있어야 한다. 본 논문에서는 프랜차이즈 스토어들의 특성을 반영한 소셜 빅데이터 분석 방법을 제안한다. 제안 방법은 검색어 설정 방법과 리뷰 필터링 방법을 포함한다. 검색어 설정을 위해, 소상공인진흥공단에서 제공하는 공공데이터를 기반으로 검색에 필요한 지역명을 추출한다. 그리고 리뷰 필터링을 위해, 네이버 및 카카오 등에서 제공하는 검색 API를 이용하여 프랜차이즈 분점 정보를 알아내고, 분석 대상이 아닌 타 분점의 리뷰들을 필터링하는데 이용한다. 제안 방법의 검증을 위해 온라인에서 수집된 실제 리뷰를 대상으로 실험을 수행하였으며, 제안 방법의 리뷰 필터링 정확도는 평균 93.6%로 조사되었다.

• 한국컴퓨터정보학회논문지
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• 제23권10호
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• pp.81-86
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• 2018

In the field of mobile games, social network games are steadily increasing in market scale and public interest every year. This paper proposes a method to design a social network game, which is one of the most successful genres in mobile games. The method uses Unity3D, the most commonly used engine for mobile game development. NGUI, a versatile developmental tool of Unity3D, is used to create shops and battle UIs. This paper particularly focuses on how to use the web hosting service to search and operate the necessary data from the database in the server. In addition, the proposed social network game is easy to implement real-time battle using Animator and Raycast, and is characterized by efficient battle implementation through time delay using Coroutine function.

• 한국사회복지학
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• 제46권
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• pp.178-209
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• 2001

This paper aims to provide a critical assesment of Conservatives's and new Labour's social assistance reforms in the U.K. and their differential impacts on low income groups. During the period of 18 years in power, the Conservative governments enforced benefit recipients being capable of work to be out of benefits and to get into work. They employed not only 'carrots' to encourage beneficiaries being capable of work to have full-time work, but also 'sticks' to discourage them to depend on benefits. The reforms under the Conservative governments were closer to the workfare model. The new Labour government has continued to emphasize work regarding social security reform. It has raised 'from welfare to work' as the main reform objective. However, it has not necessarily focused on 'carrots and sticks' in order to get beneficiaries into work. Instead, the new Labour government has put its priority regarding social assistance reform on human capital development in order to develop the capability of beneficiaries for work. Britain under the new Labour government seems to be moving from workfare to activation model. These differentials between the Conservative governments and the new Labour government regarding social assistance reforms bring about the different policy outcomes. Under the Conservative government, social assistance programmes were prone to strengthen the state's control over benefit recipients and to increase stigma to them. Punitive, demeaning, stigmatising programmes of work and unending job search activities harm the bases of self-respect. On the contrary, the activation programmes under the new Labour government has contributed positively to both socially significant participation and autonomy of beneficiaries.

• 정보관리학회지
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• 제24권4호
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• pp.255-265
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• 2007

하루에도 수백만 건 이상의 방대한 질의어가 입력되는 검색엔진을 통해 인터넷 검색 패턴을 분석하는데 활용될 수 있는 질의어 분포의 정상성을, Pareto 분포와 Zipf 모형을 이용해 검토하였다. 실제2주일간의 일간 검색어 분포를 Pareto 모형으로 적합 시킨 결과, 그 기울기가 1.33에서 1.34 정도로 일관되게 측정되고 있어 Pareto 분포를 이용해 일간질의어 분포의 정상성을 평가할수 있음을 제시하였다. 이런 연구결과는 사회적 관심사와 그 변동 흐름을 해석하는데 보다 객관적이며, 효율적인 자료를 제공해 줄 수 있을 것이다.