• Proceedings of the Korea Database Society Conference
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• 1998.09a
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• pp.101-114
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• 1998

Digital Library Definitions； A library that has been extended and enhanced by the application of digital technology. Contents and services accessible and deliverable via electronic networks to and from the worldwide libraries and commercial information resources. A large, organized collection of multimedia information for providing users of a community with coherent access to certain information services. A realistic means to build an Information Infrastructure for advanced Internet services of the future. more …(omitted)

• Proceedings of the Korean Information Science Society Conference
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• 2000.10c
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• pp.449-451
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• 2000

본 논문에서는 분산 이기종 시스템들로 구성되는 다수의 독립된 인터넷 상점들과 이들을 연합하여 공동 포인트 적립, 공동 상품 검색 등의 통합된 서비스를 제공하는 인터넷 쇼핑몰 허브 싸이트에서 고객 개개인에게 맞춤 상품 정보 및 광고를 제공하기 위한 방법을 제시한다.

• Proceedings of the IEEK Conference
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• 2003.11c
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• pp.345-348
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• 2003

Overlay multicast is proposed as an alternative approach for providing muticast services. A logical infrastructure is built to form an overlay network on top of the physical layer. In this paper, we propose an efficient overlay multicast in wireless ad hoc networks. The overlay multicast tree adapts to the changes in underlying networks. The multicast tree adjusted according to the local member information.

• Information and Communications Magazine
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• v.13 no.11
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• pp.192-210
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• 1996

본 고에서는 일반 가정 및 소규모 업무용 가입자들을 대상으로 광대역 멀티미디어 서비스를 경제적으로 제공할 수 있는 ATM 기반의 디지털 Hybrid Fiber-Coax 망에 대한 표준화 동향을 분석하고, 양방향 통신 서비스를 수용하기 위한 기술적 사항에 대해 고찰한 내용을 기술한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.7
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• pp.1597-1602
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• 2010

Sarkar et al. proposed a new Cellular Automata(CA) based security scheme providing both authentication and confidentiality. The application of CA for designing the scheme makes it suitable for hardware implementation. But the proposed method by Sakar dt al. has some problems. In this paper, we analyze CA and give a method for detecting secret key.

• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.255-258
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• 2007

WLCG/EGEE project has a main goal of providing application scientists with access to a geographically distributed computing Grid infrastructure. Currently, WLCG/EGEE infrastructure is the world's largest Grid infrastructure, providing over 20,000 CPUs and about 3 PB disk at 200 international sites and used by over 9 application domains including LHC experiments from high-energy physics. This paper addresses the design and construction of WLCG/EGEE tier-2 propelled by international collaboration with EGEE-II project.

• Journal of the Korean housing association
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• v.12 no.2
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• pp.55-63
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• 2001

The purpose of this study was to develop the community programs of multihousing in Korea through evaluating and analyzing the actual conditions of community in multihousing in U.S.A. This study was conducted by using a field survey and questionaire at the 2 multihousing complexes located in the City of Blacksburg, Virginia, U.S.A. The major findings were as follows: 1) There was a variety of community programs and facilities, such as a monthly newsletter which allowed information to be exchanged among all residents. The programs also provided news on events for the children, teenagers, college students, adults and seniors. These events were held at the club house or pond area. 2) The average degree of satisfaction of these programs and facilities was high. 3) Korea need to follow the example of the U.S.A by i) providing a monthly newsletter periodically to exchange information ii) offering a variety of community programs iii) providing programs regarding district bureau of public administration, kindergarten service, telecommunications office and holding service for package, registered mail, drycleaning, etc.

• Journal of Communications and Networks
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• v.14 no.4
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• pp.418-428
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• 2012

With the requirement for providing multiple levels of access control for group members, many group key management schemes designed for hierarchical access control have been put forward. However, most of these schemes focus on the efficiency of group key establishment and rekeying in centralized environments. This paper proposes an integrated group key agreement (IGK) scheme for contributory environments. The IGK scheme employs the integrated key graph to remove key redundancies existing in single key trees, and reduces key establishment and rekeying time while providing hierarchical access control. Performance analyses and simulations conducted with respect to computation and communication overheads indicate that our proposed IGK scheme is more efficient than the independent group key agreement scheme.

• Asia pacific journal of information systems
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• v.20 no.3
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• pp.91-114
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• 2010

An IT system within a company play increasingly important role as a significant part of corporate assets. The IT system possesses an extraordinary ability to improve an organization's efficiency, effectiveness and productivity by providing competitive advantages and improving strategic business decision capabilities. Indeed, providing a more secure IT environment, improving employee productivity and enhancing business process and strategic decision capabilities are key areas to improve corporate performance. However, existing research on IT ROI of return on IT investments does not provide solid justification to stakeholders. In this paper, we analyze the IT investment during the past 28 years from 1982 to 2009 and present the results in two dimensions. First, we show the IT solution implementation analysis by years and industries based on 1,240 IT success cases from 8 different sources such as major Korea IT newspaper, IT magazines, and IT vendors. Then, the paper presents the relationship between IT capability through IT success cases and corporate business performance among 32 industries.

• Journal of the Korean Institute of Navigation
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• v.25 no.3
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• pp.247-256
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• 2001

This study aims to develop the information service system of integrated seakeeping performance for seagoing vessels. It has been successful in developing the intended system which has made possible to provide the following functions and capabilities. o immediate computation of the dynamic motions of a ship against the present and future weather conditions; o evaluation of the integrated seakeeping performance of a ship on a real time basis and providing the navigators with the seakeeping informations on the spot enabling them to take the most appropriate countermeasures; and o supporting the navigators in the selection of a safe sailing route by providing the integrate seakeeping performance.