• Journal of The Korean Association of Information Education
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• v.23 no.6
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• pp.551-560
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• 2019

In the advanced information age, learning is an activity in which learners access information resources through computers and Internet to acquire and evaluate information on their own. The emergence of an online learning platform based on the fourth industrial revolution technology is developing into an environment in which elementary and secondary learners learn and study based on constructivism learning theory. In the online learning environment, the researches on the information retrieval ability of the elementary and secondary learners and the self-directed learning ability were found to be highly related. However, it is necessary to analyze the relation between information retrieval ability and self-directed learning ability through a cross-sectional study that is limited to specific curriculum and contents and expands the longitudinal research. In this study, the panel data of the Seoul Education Longitudinal Study collected over 8 years are used to find the difference in self-directed learning ability according to the longitudinal pattern of information retrieval ability and frequency.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1997.10a
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• pp.391-394
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• 1997

인터넷의 웹은 여러 곳에 분산되어 있을 뿐만 아니라 끊임없이 동적으로 변화하는 특성이 있기 때문에, 보통의 인덱스를 통한 정보검색 방법에는 한계가 있다. 이러한 웹의 특성을 적절히 살리면서 원하는 정보를 신속하게 검색하기 위하여, 본 논문에서는 여러 개의 에이전트가 인공생명 기법에 의해 조직되어 정보를 검색하는 온라인 에이전트를 소개한다. 이것은 각각의 에이전트에 의하여 검색된 문서가 얼마나 질의에 가까운가에 따라서 해당 에이전트를 만이 살아 남아 문서를 가져오도록 함으로써, 불필요한 문서를 검색하지 않게 되어 단위 시간에 원하는 문서를 많이 얻어올 수 있는 장점이 있다. 실제 웹 환경에서 실험한 결과 종래의 폭우선 검색이나 랜덤검색에 비하여 좋은 결과를 내는 것을 볼 수 있었다.

• Journal of Internet Computing and Services
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• v.18 no.4
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• pp.109-119
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• 2017

This paper is to analyse empirically using the data collected from Korea portal Naver's ad management system and show online ad platform may not be two-sided market. It is aim of this study to propose the appropriate approach to define the market, based on the empirical result. Here are two research questions to be reviewed. First, is there any consistency between business model of search advertising and definition of two-sided market which Rochet-Tirole proposed in 2006? Second, do indirect network externalities exist significantly in search advertising market? if so, this study is going to estimate the level of it through empirical measurement. Based on Luchetta's paper which suggested that google may be one-sided market, it performed the correlation & regression analysis to prove his suggestion. The result is that online search advertising costs increased by more than 50 won when advertisers increased by one unit. However, there was no significant correlation and regression between the search frequency and online search advertising cost. It means that there is little possibility to identify two-sidedness in online search advertising service(market) because of no(or little) indirect network externalities which are a necessary condition for two-sided market. This result has three implications, such as the availability to adapt traditional market definition tools to online search advertising market, the possibility enhancement to find the fundamental competition elements in defined market and promotion of the powers of persuasion in competitive market reality. It is significant that the gap between legal scholars including regulatory practitioners and economists can be overcome to some extent. who have shown the different perspective on the two-sided market.

• Digital Contents
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• no.2 s.45
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• pp.68-72
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• 1997

정보의 중요성이 날로 부각되고 인터넷 사용인구가 급격히 증가함에 따라 국내에서도 정보검색에 대한 관심이 크게 높아지고 있다. 여기에 PC의 보급이 일반화되어 사무실이나 가정에서 쉽게 온라인에 접속하여 정보검색을 할 수 있게 됨에 따라 정보검색이 일부 전문가들의 영역을 벗어나 일반인들 사이로 확산되고 있다. 이제는 정보검색을 전문적인 기능으로 국가에서 관리하는 방안을 검토할 때이다. 전문 검색인의 발굴 및 평가 체제를 일본의 사례를 통해 알아보자.

• Journal of Information Management
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• v.26 no.2
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• pp.1-36
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• 1995

The purpose of this study is to analyze fundamental six functions of DIALOG, STN, ORBIT and CDP and then investigate the similarities of the four systems in terms of the functions, and also to compare the commands of these systems with ISO 8777 which is an international standard of command language for the interactive text searching. It was found that there are few differences between the four systems and ISO 8777 in functional aspects, but few similarities in command expression aspects. In addition, it was proven that these four systems are more effective than ISO 8777 in some commands.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1509-1512
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• 2000

신문은 가장 오래된 정보분배 수단의 하나이고, 대부분의 사람들은 방송보다는 좀 더 자세한 일상의 정보를 획득하기 위하여 날마다 신문을 이용한다. 인터넷의 등장과 함께 모든 주요신문사들은 온라인 신문기사를 독자들에게 제공하고 있으며, 신문사들의 웹사이트들은 페이지 뷰(Page View)의 평가에서 대부분이 상위에 랭크되어 있다. 그러나 현재의 온라인 신문기사의 브라우징에는 사용자의 이용 편의성 및 시간에서 많은 문제점을 내포하고 있다. 본 논문에서는 사용자가 온라인 신문기사를 검색할 때, 신문기사 전체의 윤곽을 파악할 수 있도록 하고, 브라우징에 소요되는 시간과 마우스 클릭 횟수를 대폭 줄일 수 있는 브라우징 방법에 대해 연구하였다.

• Information Systems Review
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• v.21 no.1
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• pp.61-90
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• 2019

From the digital perspective, customer journey and customer experience management are emerging as important issues for companies. While digital customer experience has become more important due to the recent surge in online sales of the home appliance products, customers' experience in online is not differentiated as offline-focused traditional methods are maintained. This study aims to analyze the characteristics and mutual influences of customer experiences at each stage of online purchase journey, and to explore the effects on the product repurchase intention, focusing on online purchasers of home appliance which are high-involvement products. As a result, both cognitive and affective experiences of the research phase directly affect satisfaction, whereas affective experience at the purchasing stage indicated indirect effects through cognitive experience. The experience of the research phase positively affects the next phase, the purchasing experience, and the experience of the purchasing phase leads to the intention to repurchase the product. However, it is also found that, depending on the choice of online channels, the experience of research phase may affect the product repurchase intention than the purchase experience.

• Journal of Digital Convergence
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• v.10 no.2
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• pp.255-267
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• 2012

High Internet usage and the public's keen interest on health have influenced the health care system, and a potential value of the online health information and medical consultation market is immense. This study reveals results from data collected from Seoul residents in the age group of 20s in 2011. Out of 499 respondents, 75.2% answered that they used online health information; however, only 7.2% answered that they have used online medical consultation services. Findings on the purposes of using online medical consultation included treatments of symptoms(33.6%) and self-disciplines of one's health(19.5%). Mostly used Websites for health information search included search engines and blogs, but respondents preferred to use government sites and hospital sites in the future. When choosing a medical consultation, respondents preferred a certain website for different reasons including creditability of the consultant(23.7%), creditability of the organization(23.7%), rapid responses(21.2%), and more. Overall, although health information search via web is being highly utilized among people in their 20s, utilization of online medical consulting is not. Thus, promotion efforts to increase awareness and utilization of online medical consulting based on the site selection criteria, type of personal information disclosure, and other preferences are essential. Also, creating websites meeting these criteria is important.

• Journal of the Korean Society for information Management
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• v.13 no.2
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• pp.19-37
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• 1996

The development of information retrieval between 1950s and 1990s is described chronologically. For each decade, the following information retrieval systems are examined : post-coordinate and KWIC indexing methods for the 1950s ; off-line and experimental on-line systems for the 1960s ; on-line and full-text retrieval systems for the 1970s ; full-text databases, on-line interfaces, and overseas and domestic on-line databases for the 1980s ; and finally for the 1990s, CD-ROM, multimedia, hypertext, and Internet. The prospects for the future are also discussed.

• Journal of Information Management
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• v.9 no.2
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• pp.50-57
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• 1976