• Journal of Korea Society of Industrial Information Systems
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• v.9 no.4
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• pp.26-31
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• 2004

Due to the recent explosive progress of Web, We can easily access a large number of images from m. In this paper, we describe our approach of developing a general purpose content based image retrieval system over the H using a Web agent. The Web agent extracts text information of images from the links and file contents in HTML. The proposed system retrieves the images from database using the query by sketch and the query by example on Web browser. Experimental results demonstrate the effectiveness of the new approach.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.9
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• pp.3458-3464
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• 2010

Due to the recent tremendous growth of internet information, RSS, syndication technology provides internet users with a user-friendly information search. RSS enables you to automatically receive newly updated contents, so users do not need to constantly access web sites to obtain new information. This paper proposes the way of managing the web crawler, which collects the sites of RSS documents and helps the users efficiently use the RSS documents. And it also suggests the proper way of ranking the RSS documents based on the users' popularity. Users can efficiently search out the documents they need by using the proposed information searching methods.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10c
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• pp.507-510
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• 2006

본 논문에서는 모바일 DRM(Digital Rights Management) 상의 멀티미디어 파일에 적용할 수 있는 상황인식 기반의 사용제어 모델을 제안한다. 특히, 위치 및 시간 등의 상황 정보에 기반하여 모바일 콘텐츠에 대한 접근 및 사용을 제어하는 '동적인 역할기반 접근제어'(dynamic role-based access control)를 지원하는 프로토타입 시스템을 임베디드 보드 상에서 구현하여 테스트하였다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2000.04a
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• pp.120-125
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• 2000

We propose a semi-automatic and dynamic indexing algorithm for multi-media database(e.g. movie files, audio files), which are difficult to create indexes expressing their emotional or abstract contents, according to user's sensitivity by using user's histories of access to database. In this algorithm, we simply categorize data at first, create a vector space of each user's interest(user model) from the history of which categories the data belong to, and create vector space of each data(title model) from the history of which users the data had been accessed from. By continuing the above method, we could create suitable indexes, which show emotional content of each data. In this paper, we define the recurrence formulas based on the proposed algorithm. We also show the effectiveness of the algorithm by simulation result.

• Journal of Korean Library and Information Science Society
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• v.25
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• pp.225-256
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• 1996

The purpose of this study is to find the ways that will be helpful to improve archival system and to establish National Archives. The contents of this study were focused on comparing the characteristics of archival system in governmental administration,: Executive, Legislature, and Judiciary. They were also focused on analyzing the problems of those current system. This research was basically conducted depending on the detailed articles of the legislation and regulation pertinent to the archives. Two major results of the research are 1) There are much differences among the governmental administrations in structuring and organizing for archival administrations. Archival works of government document are divided primarily according to the period of conservation and it is necessary to establish the regional archives and central management system, and to employ archivists as an expert staff. 2) The principles and methods of archival process, such as transferences, classifications, preservations, access, and destructions are similar to each other. In order to improve and co-ordinate current systems, it is necessary to constitute several councils endowed with consultative and decision-making power.

• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.515-517
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• 2006

Recently, there is a rapidly growing demand for efficient real-tine playback and transmission of large amounts of multimedia data. But most users' connections are not fast enough to download large chunks of multimedia data. Therefore a streaming technology is needed in which users enable the real-time playback of multimedia date without having to download the whole of the multimedia date. In this paper, we propose a personalized IP streaming system. The proposed IP streaming system enables users to got an intelligent recommendation of multimedia contents based on the user preference information stored on the streaming server or the home media server. Moreover, users are assured of seamless access of streamed content event if they switch to another client device by implementing streaming system based on user identification and device information. We evaluate our approach with simulation results.

• ETRI Journal
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• v.29 no.6
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• pp.794-807
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• 2007

In the mobile Internet, users generally work with handheld devices with limited computing power and small screens. Their access conditions also change frequently. In this paper, we present a novel method supporting intelligent content adaptation to better suit handheld devices. The underpinning is a unit of information (UOI)-based content adaptation method, which automatically detects semantic relationships among the components of Web contents and then reorganizes page layout to fit handheld devices based on identified UOIs. Experimental results demonstrate that our method enables more sensitive content adaptation.

• Journal of Families and Better Life
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• v.22 no.4
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• pp.15-27
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• 2004

This study investigated the factors in evaluating internet shopping mall sites, and developed a self-report evaluation scale of such sites, This article identifies factors to determine criteria for evaluating the sites from the consumers' viewpoint. Eighty three items were extracted initially, which were then categorized as follows: \circled1 Type of business, \circled2 Navigation ease, \circled3 Technological level, \circled4 Design of sites, \circled5 Communication ease, \circled6 Information available, \circled7 Ease of access, and \circled8 Site security, Overall reliability coefficients were high in the individual domains ($\alpha$=.86 to $\alpha$=.95). Face validity and contents validity were demonstrated to be good, There were significant differences in the means of these categories. The results also show that the technological level is the most important in shopping mall sites evaluation. These results may be used not only as a tool to evaluate shopping mall sites but also as a guideline to improve the quality of a shopping mall site that is under development.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2000.05a
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• pp.348-351
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• 2000

In order to enact the technical standard of RF(Radio Frequency) in domestic, this paper analyzes the trends and the technical specifications of high performance radio local area network, for example HIPERLAN(Europe), U-Nll(U.S.A), broadband mobile access system(Japan). The contents of this paper are helpful to make a rule for the desirable national technical standard of high performance radio local area network.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.13 no.2
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• pp.138-148
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• 1988

In this paper, it is focused on the design of the FEP system that executes the access control programs instead of the hos processor. And so the FEP system improves the network flexibility and redues the installation costs of network. The design criterion of the FEP system is based on the ISDN construction which presents the information channel in thr future information society. The proposed hardwares and transmission softwares use the basic transmission rate of 64Kbps, and the contents of file service throuth this FEP system are listed by FTAM services.