• KSII Transactions on Internet and Information Systems (TIIS)
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• v.3 no.4
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• pp.376-384
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• 2009

In this article, we demonstrate that the asymmetric key-based architecture for securing wireless sensor networks recently introduced by Haque et al. is insecure under impersonation attack, since it does not provide authentication semantics. In addition, we show that, for the scheme to work correctly, the resulting key distribution construction should be symmetric and group-wise.

• Korean Management Science Review
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• v.10 no.2
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• pp.163-185
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• 1993

Based upon previous research, factors affecting office productivity with the Accounting Information Systems(AIS) were suggested, and the relationships between the factors and the office productivity with the AIS were hypothesized. The empirical results suggested that there are significant positive relationships between the factors such as the user participation, level of AIS utilization, internal AIS development and AIS technical sophistication and the office productivity with the AIS. According to the results, the office productivity increasing strategy with the AIS were proposed.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06a
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• pp.335-336
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• 2008

• Information and Communications Magazine
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• v.19 no.7
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• pp.72-77
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• 2002

This paper introduces the Future Technologies for Universal Radio Environment (FUTURE), which is China's wireless communications research project oriented to beyond 3G systems. The features and basic requirements of the FUTURE project are described, and the system structure, which is based on IPv6 core network, is proposed. The key techniques for FUTURE project are also addressed.

• Annual Conference of KIPS
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• 2000.10a
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• pp.359-362
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• 2000

ITS(Intelligent Transportation System)는 도로와 차량 등 기존 교통의 구성요소에 첨단의 전자.정보.통신 기술을 적용시켜 교통시설을 효율적으로 운영하여 통행자에게 유용한 정보를 제공하여 안전하고 편리한 통행과 전체 교통체계의 효율성을 기할 수 있는 기술이다. 이러한 ITS의 핵심기술로는 데이터베이스, 메시지 집합 분야통신방식 분야, 소프트웨어 개발 분야, 교통정보관리 분야, 기타관련 분야 등이 있으며 본 논문에서는 이와 같은 기술의 국내외 시장현황 및 표준화 현황 등에 관하여 상술하고자 한다.

• Journal of the military operations research society of Korea
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• v.25 no.1
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• pp.179-198
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• 1999

This study concerns logistics support analysis record(LASR) which provides guaranteed support, and is needed in various weapon systems development and acquisition to develop the optimal factor for integrated logistics support(ILS) by reflecting the results of logistics support analysis(LSA). We observe and analyze the logistics management information(LMI) system used in the United States under the integrated data environment(IDE), and analyze the differences between logistics management information system and the LOADERS(logistic support analysis data entry and retrieval system) which is currently used in Korea. Based on the analyzed results, a improvement model that corresponds to reality and can be applied is presented.

• Annual Conference of KIPS
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• 2001.10a
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• pp.681-684
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• 2001

뛰어난 보안성과 다기능성으로 금융, 교통 등 각종 분야에서 스마트카드의 활용이 점차 늘어나고 있다. 이런 스마트 카드의 장점을 사이버 상에서 이루어지는 교육시스템에 적응시켜 보고자 한다. 기존의 사이버 교육시스템을 중심으로 보안성이 중요시되는 지불 및 교육컨텐츠 보호관련 부분들과 기타 시스템 이용에 관련된 부분들에 스마트 카드를 도입하여 보다 편리하고 안전한 시스템을 구성해 보았다.

• Journal of the Korean Society for information Management
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• v.8 no.2
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• pp.125-138
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• 1991

This paper focuses on issues in the relat~onshlp of library and information science with a closely allied chsciphne, communication studies. It is obvious that researchers in both fields study topics similar in focus, such as information theory, information-seeking behavior includ~ng user studies, systems theory, invisible colleges, the diffusion of knowledge, human interaction with information /communication technologies and the information society. In order to discuss the comparison of theoretical

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.8C
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• pp.750-755
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• 2009

Tomlinson-Harashima precoding (THP) is considered as a prominent precoding scheme due to its capability to cancel out the known interference at the transmitter side. Therefore, the information rates achieved by THP are superior to those achieved by conventional linear precoding schemes. In this paper, a new lower bound on the achievable information rate by the regularized THP under additive white Gaussian noise (AWGN) channel with multiuser interference is derived. Analytical results show that the lower bound derived in this paper is tighter than the original lower bound particularly at low SNR range, while both lower bounds converge to the same lower limit as SNR$\rightarrow$$\infty$.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.22 no.52
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• pp.229-239
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• 1999

Enterprise integration, which aims to enhance an enterprise's competitive edge, requires a highly structured product information model as a common product database. Previous research works on this issue have been narrowly focused on the transformation of product information between various operation areas, leading to a situation where enterprise integration lacks a formal method of information modeling. In this paper, research works and issues surrounding product information modeling for enterprise integration are reviewed, and the requirements for a product information model are identified. A product information model called L3DPIM (Layered Three Dimentional Product Information Model) is proposed, which is based on a feature-based design process. This model is expected to serve as a modeling paradigm for enterprise integration.