• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.232-239
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• 2009

Emerging social networking services provide a new paradigm for human-to-human communication. However, these services are centralized and managed by single service provider. In this paper, we propose MicroPost, a decentralized event notification service architecture for social applications based on publish/subscribe model. In our design space, event brokers are structured as an overlay network which provides the substrate of distributed peer-to-peer lookup service for storing and retrieving subscriptions with hashed keys. Event clients interact with event brokers to publish or subscribe social messages over the wide-area network. Using XML standards, we present an efficient algorithm to forward events for rendezvous-based matching in this paper. In our design space, the cost of routing is O(${\omega}log_kN$), where N is the number of event brokers, ${\omega}$ is the number of meta-data obtained from event messages, and k is a constant, which is selected by our design, to divide the identifier space and to conquer the lookup of given key. Consequently, what we achieved is an asynchronous social messaging service architecture which is decentralized, efficient, scalable, and flexible.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.10a
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• pp.125-128
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• 2000

The Internet banking service, through which customers process their banking-related works, was introduced in July 1997. The service has since spread quickly, and as of the end of June 2000, just one year after its introduction into Korea, its subscribers numbered 1.23 million people. This figure is ten times larger than the 120,000 subscribers recorded over the six months period up to the end of 1999. In addition, since the end of June 2000, subscriptions on average increase by more than 10,000 a day, and by the end of December 2000, it is expected to pass the 3 million mark. There has been no empirical study conducted on the invigorated Internet banking's status and its services. Therefore, this research is designed to conduct a survey on the Internet banking service status, to conduct actual transactions from the viewpoint of customers and then make a empirical evaluation of it. This will indicate directions for improvement and development of the domestic Internet banking service. We have evaluated ten areas of the Internet banking service including financial service, customers service, users'convenience, and system safety. As of the end of June 2000, 18 out of 20 commercial domestic banks are providing an Internet banking service, and we have conducted evaluations of all these banks. The evaluation is divided into ten categories with 100 points as a maximum score. These are then classified into six grades AAA, AA, A, BBB, BB and B. The outcome of this evaluation was featured in the major domestic journals, and the banks, acknowledging the value of the report, declared that they would adopt it as their criteria for evaluation.

• Journal of the Korean Society of Costume
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• v.53 no.8
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• pp.105-120
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• 2003

Despite the creative strengths fashion illustrations, most fashion related advertisements use photographs instead. Furthermore, there is not much study done on the effects of fashion illustrations. Through this study the authors discover the effectiveness of fashion related magazine advertisements using fashion illustrations by looking into the level of recognition due to interaction effects between advertisements using photographs and advertisements using fashion illustrations. This study, however, does not focus on comparing the different levels of recognition effect between photographs and fashion illustrations. After a literature review of magazines with high rank subscriptions, an experiments was conducted. A booklet was made using 16 fashion illustration advertisements and 16 photograph advertisements all designed to control variables other than advertisement type. Then a survey was taken using the booklet to measure the recognition levels of the different types of advertisements. Through an ANOVA test of the 2 ${\times}$ 3 factorial designed model the authors derived results implying that interaction effects do exist between the different types of advertisements. In the environment where advertisements using photographs dominate, advertisements using fashion illustrations can effectively be recognised by the consumers. Through this study, the authors wish to give guidance to decision makers in the fashion industry related to the type of printed advertisement they should seek.

• Journal of Korean Library and Information Science Society
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• v.29
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• pp.27-63
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• 1998

The purpose of this study is to analyze the document delivery service(DDS) of the academic libraries and suggest its improvement model in Korea. DDS means providing copies of information requests in any format and from any source. And DDS is gaining in importance as libraries turn to 'just-in-time' access rather than 'just-in-case' collection to meet user information needs. By good fortune, rising journal subscription prices, declining financial resources, canceling some of journal subscriptions, electronic transmission technologies, and the rise of commercial document delivery services have allowed libraries to begin to deliver articles to users in a much more rapid and acceptable time frame. Therefore, the library paradigm for the 2000s must be the creation of new document delivery structures which capitalize on the access tolls and structures created by librarians during the past generations. First of all, library-based document service requires a close review of existing library-to-library delivery mechanisms, application of technology to transfer of facsimiles of materials and facilitated use of existing fee-based document sources. The ideal document delivery system would feature a transparent, seamless electronic service incorporating searching and browsing identification and marking of desired items, and transmission and fulfillment of requests. And requested items would be supplied from library collection, commercial suppliers, or other sources. But the future of DDS will succeed when physical resources, policies, personnel, and practices are organized to provide timely information delivery to users.

• Journal of Information Management
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• v.36 no.1
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• pp.1-32
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• 2005

The scholarly communication crisis is not a journals crisis, but rather a broader crisis in information communications. It is the loss of access to the scholarly research literature, as the rising cost of STM journal subscriptions far out-strip academic library budgets. Now, the open access as alternatives to traditional journal subscription model are emerging for STM scholarly information. There are basically three forms for OA strategies : Open Access Journals(OAJ), Author Self Archiving(ASA), Academic Institutional Repositories(AIR). This paper describes the current trends and analyses potentially serious limitations and obstacles or various issues of the OA strategies, including the notion of scholarly information as a public good, myths of free access, author pay model, holder of copyright, etc.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.28 no.2
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• pp.245-271
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• 2017

Despite the importance and uses of serials in public libraries, the present condition of serial management is still behind. The purpose of this study is to investigate the problems and proposes the ways of improving serials management. For the purposes, this study conducted a literature review, case study of collection management policies of 8 regional central libraries and 3 public libraries abroad, and online questionnaire survey of 31 public libraries in Gyeong-gi province. Based on the results, this research suggests the need for extending the number and scope of serials subscriptions, improving access points and establishing management guidelines.

• Asia pacific journal of information systems
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• v.31 no.4
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• pp.606-632
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• 2021

With many consumers being exposed to news via social media platforms, news organizations are challenged to attract visitors and generate revenue during visits to their websites. They therefore need detailed information on how to write articles and headlines to increase visitors' engagement with the content to drive advertising revenues. For those news organizations whose business model depends mainly on advertisements, rather than subscriptions, it is particularly crucial to understand what makes the website attractive to their visitors, what drives users to stay on the website, and what factors affect a user's exit decision. The current research examines individual news consumers' choices to find patterns of increase or decrease in user engagement relative to a variety of topics, as well as to the mood or tone of the content. Using clickstream data from a major news organization, the authors develop a user-level dynamic model of clickstream behavior that takes into account the content of both headlines and stories that visitors read. The authors find that readers appear to exhibit state dependence in the tone of the articles that they read. They also show how the topics expressed in headlines can affect the amount of content readers consume when visiting the news organization to a much larger degree than the topics expressed in the content of the article. Online publishers can make use of such findings to present visitors with content that is likely to maintain and/or increase their engagement and consequently drive advertising revenue.

• Journal of Information Technology Services
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• v.18 no.5
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• pp.165-182
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• 2019

An equity crowdfunding system of Korea has been introduced since January 25, 2016. The crowdfunding has contributed to remove the funding gap for startups in Korea. In the three years since the introduction of the system, the amount issued has been growing annually 31 percent. In 2018, the general investors who participated in equity crowdfunding, account for 93.8% of the total market size. General investors are a large part of equity crowdfunding. Investors, however, are facing the information asymmetry problems. General investors rely heavily on the investment prospectus provided by startups to obtain the information they need to determine their investment decisions. Under these circumstances, startups have the incentive to provide information that is advantageous to them, and investors are likely to be adversely affected by the investment prospectus. In this study, we collected the novel crowdfunding prospectus dataset: a total of 459 investment prospectus and conducted a morphological analysis. The analysis showed that the more positive the word, the higher the success rate of investors' subscriptions. We also compared projects that were heavily invested by general investors with projects that were heavily invested by professional investors. Then, we were able to examine that the success rates of project subscription, which were heavily invested by general investors, were higher than the projects of professional investor type. It can be interpreted as a general investor driven crowdfunding market. Based on these results, we propose three policies. First, the supervisor should be strengthened to provide more detailed information on investment risk factors in the prospectus. Second, the crowdfunding intermediary should monitor information provided by startups. Third, an investor should be asked to add a question to the investment compliance test that allows the investor to recognize the problem in the manual.

• Journal of the Korean Society for Library and Information Science
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• v.47 no.4
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• pp.187-210
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• 2013

The consumption through e-journal consortia makes researchers locate and use academic resources and information extensively with comparatively cheap costs. This study analyzed and investigated substantive benefits of the big deal contracts for e-journal subscriptions in terms of efficient information use. In other words, this study compare concretely the differences in efficiency of using information between large-size institutions and small-size institutions who participate in the e-journal big deal contracts. This study suggests solutions for the problems which occur persistently and repeatedly in the big deal and new counter plans which can replace the current methods of big deal contracts in a long-term perspective by revealing the gaps of acquiring and using information by the size of participating institutions.

• The Journal of the Korea Contents Association
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• v.14 no.1
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• pp.200-208
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• 2014

This study analyze long debate issues by the analysis of existing studies and the effect of private health insurance in the satisfaction of health service utilization. Then make developmental role of private health insurance. The analysis results of literatures, high-income earners are more subscriptions and the poor people in health status are excluded. Thus, enable private health insurance has the potential to lead the polarization of people. The medical use of private health insurance subscriber is more than non-subscriber and is likely to result in additional expenditure spending of public insurance. The contribution of private health insurance on improvement of the health option is clear. However, is not clear the contribution on health care quality improvement and health service customer satisfaction. The contribution on the national health care system efficiency of private health insurance is not clear. Private health insurance in the satisfaction of health service utilization is on effect. In short, supplementary private health insurance is desirable in our country.