• Journal of Science Education
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• v.45 no.1
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• pp.118-128
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• 2021

In this study, as the viewing characteristics of users of YouTube video content related to science education, 'Inflow and Access' is analyzed to find out the interaction between learners and the system, and 'Reaction and Subscription' to find out the interaction between learners and contents. To this end, the YouTube channel "Elementary Science TV," was selected as the subject of research. The channel is mainly focused on the contents of elementary science textbooks, STEAM, and gifted education. The channel's data of YouTube studio was analyzed. The following results were obtained through data analysis: first, as a result of 'Inflow and Access' analysis, YouTube video content related to science education was most often introduced through external links, and the access device was mainly a computer. Second, as a result of the analysis of 'Reaction and Subscription,' 'like' and commenting performed as a reaction to the video were less than 1% of the number of views. Most users watch without a subscription, and watch for longer when using self-directed. Although this study was analyzed through a limited channel called 'Elementary Science TV,' we were able to discover a little about the users' viewing characteristics of YouTube video contents related to science education. In the future, it is expected that it can be used as a basic material for creating videos related to science education for remote classes, establishing a science education video platform.

• Journal of Korean Library and Information Science Society
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• v.55 no.2
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• pp.267-291
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• 2024

Since the introduction of the OA transformative agreement as a new way of licensing electronic resources, the number of OA transformative agreements has continued to grow. Despite the wide range of content that should be included in the agreement due to the nature of the OA transformative agreement, there is a lack of research on OA transformative agreements. As a basis for developing a standard for OA transformative agreements, this study examines the current status of OA transformative agreements and analyzes the differences between two types of OA transformative agreements and the subscription contract. It was found that the number of OA transformative agreements has increased significantly worldwide, but the disclosure of OA transformative agreements has not been universalized. The overall structure of two different types of OA transformative agreements and a subscription contract is similar, but there are differences in the detailed clauses. In the OA transformative agreement, the detailed clauses related to the characteristic of the transformative agreement were newly created, or the details of the transformative agreement were added to the existing clauses of the subscription agreement. There were also some differences between the two types of agreements, identifying clauses that differed in content regardless of the OA transformative agreement. The study concluded that it is important to standardize the OA transformative agreement, as the number of different clauses between agreement types may increase the burden on librarians. This study is significant in that it provides a basis for the development of standardized agreements by examining the overall status of OA transformative agreements and analyzing actual agreements.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.19 no.4
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• pp.55-67
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• 2024

This study aims to identify signals that can predict the quality of startups aiming to be listed on Korea's KOSDAQ market. The startups are divided into two groups: those backed by venture capital, where a third party has addressed information asymmetry, and those not backed by venture capital. The study seeks to identify signals to help select good companies for each group. The study primarily focuses on underpricing, which strongly correlates with company quality. It aims to investigate the causal relationship between underpricing and independent variables such as underwriter reputation, institutional investor competition rate, locked-up share ratio, and extended lockup period. The empirical analysis shows that IPOs with high institutional investor subscription competition, IPOs of start-ups without VC backing matched with reputable lead managers, and IPOs with high lockup shares of start-ups with VC backing are significantly underpriced. This study provides a theoretical and logical basis for strategically choosing the level of underpricing, considering the circumstances of the firm going public, mainly whether it is VC-backed or not, and considering the effectiveness of other signals mentioned above. It also opens the door for further research by researchers in other regions to study institutional investors' subscription ratio as the pre-listing signal that can help address information asymmetry. From a policymaker's perspective, the disclosure of the above information can be considered to reduce information asymmetry for investors.

• 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.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.4
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• pp.35-53
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• 2016

Many publishers tried flipping, or extensively changed their journals flipped. They considered that converting an established journal into OA journal is more attractive than launching an entirely new OA journal. After conducting a careful literature review, this study provided the background and current situations on flipping. There are flipped OA journals alive published by commercial publisher, society, university, and institute in the field of science and medicine. This study found the increased number of published articles after flipping, with 69% of 97 flipped OA journals in 2015 having impact factors. Also 92% of the journals experienced rising in ranking of impart factor, or achieved it for the first time. It was suggested that the roles of academic society, funding agencies, and universities when it comes to active flipping.

• Journal of the Korean Society for information Management
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• v.21 no.2
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• pp.45-67
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• 2004

The purposes of this study are to compare and analyze the evaluation indicators for selection of journal suggested by scholars and organizations and to prepare theoretical background for the ideal model to meet opposing paradigms of collection management in academic libraries. A web survey method was employed to investigate applications of various selection criteria (27 for printed and 37 for electronic academic Journal) from the top 40 academic libraries in Korea. In addition, data were analysed statistically using factor analysis, t-test, Analysis of Variance(ANOVA), and Spearman's Rank Oder Correlation. The mean ranking for 9 evaluation indicators for printed were as follows: subscribing volumes per departments, degree of use, selection authority, electronic/print bundle, ISI impact factor, Internationality and reputation, costs for subscription, ILL ＆ DDS, space considerations for printed materials. But, 11 evaluation indicators for electronic were as follows : costs for subscription, accessibility, electronic/print bundle, consortia, selection authority, access expandability, subscribing volumes per departments, scholarly features of the university, ISI impact factor, ILL ＆ DDS, internationality and reputations.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.35 no.3
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• pp.137-159
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• 2024

This study analyzed the number of electronic journal subscriptions, subscription fees, usage, cost-effectiveness, etc. of university libraries to identify limitations and problems. Based on this, a case library was selected and the simulation tools Unsub was used to compare the efficiency of package subscriptions and individual subscriptions and suggest improvement measures. In the case of C University Library, SAGE and Emerald were found to be cost-effective as package subscriptions, while ScienceDirect and OUP were found to be worth considering for individual subscriptions. In particular, OUP was found to save £6,063 per year with individual subscriptions, and the ratio of accessible and usable articles reached 85.8%. In addition, ScienceDirect was found to be the most effective model for combining individual subscriptions and pay-per-view systems, considering budget savings and ease of use. Based on the results of this case study, the limitations of Unsub's application and policy tasks for developing a 'K-Unsub' version suitable for the Korean situation were suggested.

• The KIPS Transactions:PartB
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• v.14B no.1 s.111
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• pp.51-58
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• 2007

This paper suggests prototype of dialog system combining VXML(VoiceXML) that is the W3C's standard XML format for specifying interactive voice dialogues between human and computer, and RSS(RDF Site Summary or Really Simple Syndication) that is representative technology of semantic web for syndication and subscription of updated web-contents. Merits of the proposed system are as following: 1) It is a new method that recognize spoken contents using ire and wireless telephone networks and then provide contents to user via STT(Speech-to-Text) and TTS(Text-to-Speech) instead of traditional method using web only. 2) It can apply advantage of RSS that subscription of updated contents is converted to VXML without modifying traditional method to provide RSS service, 3) In terms of users, it can reduce restriction on time-spate in search of contents that is provided by RSS because it uses ire and wireless telephone networks, not internet environment. 4) In terms of information provider, it does not need special component for syndication of the newest contents using speech recognition and synthesis technology. We implemented a news service system using VXML and RSS for performance evaluation of the proposed system. In experiment results, we estimated the response time and the speech recognition rate in subscription and search of actuality contents, and confirmed that the proposed system can provide contents those are provided using RSS Feed.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.185-195
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• 2016

The purpose of this study is to understand the nature of curation commerce in the environment of e-commerce in recent years rapidly changing and looking for ways to take advantage of it. Like the recent trend curation and subscription commerce has been in the limelight in a new way of e-commerce. However, not having appropriately adapted to the market, it has gone out of business or been changing the properties. In analyzing the specific characteristics of the migration queue commerce, it evaluated whether those characteristics do change through the mediating effect of the impact of satisfaction on purchase. This study was carried out using a structured questionnaire, by collecting the material for the 305 general public in the country and it was analyzed using stepwise regression method. After validating the hypothesis, 5 characteristics of curation commerce turned out to have a significant positive effect (+) on purchase and satisfaction of consumers using curation commerce to have a positive effect (+) on purchase. After organizing these findings and discussing the theoretical and practical implications, the direction for future research was proposed.

• The Journal of the Korea Contents Association
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• v.13 no.12
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• pp.136-148
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• 2013

I would like to trace back periodic social trend by searching if regular performance might have reflected on social trend on its theme by analyzing theme trend of The National Dance Company of Korea, Dance Company of Seoul city, Dance Company of KyungKi-Do and to provide the meaningful results for further study by checking if the theme of dancing performance is in relation with social structure. To perform this research, I had studied on previous thesis and reference books. For example, I selected three groups, of The National Dance Company of Korea, Dance Company of Seoul city, Dance Company of KyungKi-Do, to research their theme of regular performance through checking previous thesis related to, performance material, news articles, pamphlets from beginning to present. How to analyze is being proceeded from foundation of dancing company to present according to Kim Byungseok's classification method, which was consistently used for searching theme trend from previous study as below; 1) Theme based on traditional conscious,2) Theme based on Literature, 3) Theme based on Historic issues, 4) Theme based on abstract, 5) Theme based on reality, 6)Theme based on social issues.