• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.883-887
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• 2008

The journal is a important resource of the scholarly communication and it is a kind of the R&D indicator. But the journal subscription cost is rising annually so it has the limits to the journal subscription fee of libraries. This paper analyses the usage of Document Delivery Service(DDS) according to the journal subscription overlapping with NDSL members. In order to select journals for analysis, this paper selects journals of the subscription overlapping top 20% and low 20% and finds out the relationship between the overlapping subscription and usages of DDS.

• Journal of Digital Convergence
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• v.18 no.9
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• pp.331-336
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• 2020

The purpose of this study is to measure the satisfaction factors of user experience of 'Unlimited subscription service' among subscription services and analyze them based on economic and cultural perspectives. By recruiting the '20-'30s who had experienced using service, they attended a survey which was based on the reconstructed honeycomb model of Peter Morville. As a result of the survey, in terms of economic perspective, cost of service, and the ease of subscription inflow were the main satisfaction factors. From a cultural perspective, the familiarity with service and belief and experience of sharing content with people around them were the main satisfaction factors. Therefore, it can be inferred that the satisfaction of the user experience of the subscription service should be firstly satisfied with economic satisfaction, which leads to cultural satisfaction. This study is expected to be used as research data on user experience and satisfaction factors of unlimited subscription service.

• Journal of Internet of Things and Convergence
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• v.10 no.4
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• pp.1-8
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• 2024

As technology advances, Internet of Things (IoT) technology is rapidly evolving as well. Various protocols, including Message Queuing Telemetry Transport (MQTT), are being used in IoT technology. MQTT, a lightweight messaging protocol, is considered a de-facto standard in the IoT field due to its efficiency in transmitting data even in environments with limited bandwidth and power. In this paper, we propose a method to improve the message transmission method in MQTT 5.0, specifically focusing on the shared subscription feature. The widely used round-robin method in shared subscriptions has the drawback of not considering the current state of the clients. To address this limitation, we propose a method to select the optimal transmission method by considering the current state. We model this problem based on Markov decision process (MDP) and utilize Q-Learning to select the optimal transmission method. Through simulation results, we compare our proposed method with existing methods in various environments and conduct performance analysis. We confirm that our proposed method outperforms existing methods in terms of performance and conclude by suggesting future research directions.

• Proceedings of the Korean Society for Information Management Conference
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• 2004.08a
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• pp.227-235
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• 2004

국내 대학도서관 및 연구기관에서는 컨소시엄에 가입해 전자정보를 구독하고 있다. 저렴한 비용으로 많은 자료를 구독해 예산 절감효과는 있으나 이용 및 활용면에서는 극히 미비한 실정이다. 지역간 전자정보를 공동 활용하는 방안으로는 전자정보를 공동 수서해 근거리에 위치해 있는 대학도서관에서는 상호대차 및 정보공유 협정을 맺어 이용시키는 것이 효율적이며, 이용성활화 방안에 대해서는 천안의 C대학교 홈페이지를 사례로 하여 살펴보았다. 전자정보의 이용활성화는 이용자 편의형 통합 인터페이스를 추축하여 전자정보 원문에 대한 다양한 접근점을 이용할 수 있는 홈페이지를 구현하는 것이 효과적인 방안인 것으로 밝혀졌다.

• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.560-562
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• 2010

급속한 IT 기술의 발전은 자원의 공유와 확산을 가속화 시켜, 정보의 활용에 있어서도 직접검색이 가능하고 최신성이 높은 우수한 전자저널을 단시간내 받아볼 수 있게 되었다. 이러한 전자저널은 고가의 자료로서 통계자료는 구독선정, 평가 갱신의 근거 자료가 된다. 본 논문에서는 2009년 K연구원에서 구독한 전자저널 패키지 AIP/APS, Wily-Blackwell STM, Nature, Science, ScienceDirect, Springer, IEEE의 통계 서비스를 살펴보고, 국제표준에 의한 이용통계의 효율적인 활용을 위하여 개선해야 할 점과 업무에 활용할 수 있는 서비스는 무엇인지 연구해 보고자 한다.

• Annual Conference of KIPS
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• 2019.05a
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• pp.192-193
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• 2019

클라우드 스토리지는 다양한 영역에서 이용가능하다. 일반적으로 데이터 저장, 이용에 사용되지만 추가적으로 데이터의 공유에 이용될 수도 있다. 이를 활용하여 단순 데이터 공유 및 데이터 구독 서비스 등 다양한 영역에 이용될 수 있다. 프록시 재암호화는 이러한 환경에서 데이터를 제 3자에게 안전하게 전달하기 위해 제안되었다. 프록시 재암호화는 데이터 소유자가 데이터를 암호화 한 뒤, 프록시에 보관하고, 위임자의 요청에 따라 데이터 소유자가 재암호화 키를 생성하여 프록시가 암호화된 데이터를 재차 암호화 할 수 있도록 한다. 프록시 재암호화는 암호화된 데이터를 제 3자에게 전달하기 위해 복호화 할 필요가 없기 때문에 데이터 원본을 노출 없이 안전하게 전달할 수 있다. 하지만 이러한 과정에서 프록시와 위임자가 결탁하여 데이터 소유자의 개인키를 복구하거나 재암호화 키를 위조하는 등의 위협이 발생할 수 있다. 이를 공모(결탁)공격이라 한다. 본 연구에서는 프록시 재암호화 기술에서 발생할 수 있는 공모공격을 방지하여, 보다 안전하게 이용할 수 있는 방법을 제시한다.

• Journal of Korean Library and Information Science Society
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• v.49 no.3
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• pp.283-305
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• 2018

Although academic library budgets have been decreasing, the rates of print and electronic journal subscription price have consistently increased. In response to this, as part of efforts to ensure access to foreign academic materials, the Ministry of Education and Korea Education & Research Information Service (KERIS) have initiated and operated Foreign Research Information Center (FRIC) since 2006, pursuing shared acquisition and sharing of foreign print journals. This study investigates the roles/values, issues raised by stakeholders, improvements in services, and new service elements of FRIC through the in-depth interviews with librarians in charge of FRIC in addition to examining its current state. The findings show that FRIC has contributed to sharing of academic materials and to promoting research. However, it was also found that the five types of stakeholders (i.e., the Ministry of Education/KERIS, universities/libraries, users, FRICs, and publishers/agencies) have diverse issues and problems with FRIC. Therefore, this study makes some suggestions to address the issues in terms of policy, system, management, and service.

• Journal of Information Management
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• v.34 no.3
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• pp.69-85
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• 2003

This case study analyzed how electronic journal subscription had an effect on special library management including budget, information behavior, library operations, facilities, space et al. in KIST. This study suggests the followings; 1) Since electronic journals has an effect on overall operations of special libraries, draw big pictures not by functions. 2) Though the most method for subscription is consortium, it is necessary to build cooperation network for information sharing and vary cost architecture of information use. 3) Through job analysis, redesign jobs. 4) Reconstruct stacks and facilities. 5) It is necessary paradigm shift that it is more important to use than preserve materials in the special libraries.

• Cartoon and Animation Studies
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• s.38
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• pp.29-51
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• 2015

With the progress in high speed internet networks, mobile devices and social networking, the eco-system of the media has shifted from that where the flow of content was one-way from the producer to the consumer. A so-called 'prosumer' culture has taken root where the consumer himself produces media content. Along with these trends, various video-sharing platforms such as youtube has a method of allocating advertisement profit to the content producer, offering a win-win platform for content pro-sumers. This allows the channels to attract several tens of millions of subscribers and raise an annual income of over 10 billion Won, marking a revolutionary change in the content industry. This paper seeks to analyze video distribution channels and short-form media content that are showing continuous growth to identify new markets where animated content can make progress in an era of online video media platforms, as well as provide a future direction for small teams of creators of animated films to survive and thrive in this environment.

• Journal of Korea Society of Industrial Information Systems
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• v.29 no.1
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• pp.15-29
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• 2024

With recent advances in information and communication technology, YouTube has become a powerful online space for users to create and share content about their interests and experiences, creating new cultural phenomena. In particular, there needs to be more research on social media in the manufacturing sector because, unlike distribution and retail, there has been relatively little direct contact with consumers. YouTube can positively affect firms' performance by promoting products and brands. On the other hand, it can also cause risks, such as production disruption due to rumors or misinformation. Thus, it is necessary for firms to examine how information about an electric automobile defects spreads on YouTube according to the number of subscribers and views through statistical network analysis.