• 한국ITS학회:학술대회논문집
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• 2005.11a
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• pp.83-88
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• 2005

A transportation problem in Korea is a serious issue that has to be solved urgently in the motor era of 15 million vehicles. Recently ITS has been introduced to improve efficiency of the current roads because an excessive budget and a long term construction are needed to build new roads. Therefore the government enacted the law as of ITS and the in architecture. However, these ITS information services were oriented to mainly vehicles and drivers, not public entities such as bus driver, passengers and so on. Nowadays lots of local autonomous city introduced a public transportation information system (PTIS), and providing useful information for the public. For this PTIS, important design issues are to be focused on detecting and tracking technology of moving bus, and a wireless communication link to transmit the location information. This paper presents design models using several wireless communication methods, and an implementation case using a Wireless packet Data communication Network (WDN) to transmit bus location information at Seoul, Korea.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.207-208
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• 2006

Intrusion detection technology is highlighted in order to establish a safe information-oriented environment. Intrusion detection system can be categorized into anomaly detection and misuse detection according to intrusion detection pattern. In this paper, we propose an architecture to make up for the defect of conventional anomaly intrusion detection. This architecture reduces additional resource consumption and cost by placing the agent in the strategic location in Internet.

• The Journal of Society for e-Business Studies
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• v.4 no.1
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• pp.73-86
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• 1999

Inspired by the growth of the Internet, electronic commerce(EC) has grown rapidly over the last few years and has become a major Internet application domain. EC encompasses various profit-oriented activities such as purchase of goods and services over the network, banking, and business-to-business trade. The purpose of this research is to develop an electronic commerce merchant server for the small and medium size business. The proposed solution is designed to meet a cheap, simple, extensible, and interoperable requirement. Also, our solution supports one-to-one marketing concept by using matching technology. We expect that our solution makes the small and medium size EC market more easily.

• Journal of Ocean Engineering and Technology
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• v.13 no.2 s.32
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• pp.176-185
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• 1999

Currently, large size shipyards have performed the generating of piece and the nesting using shipbuilding-oriented CAD program, which requires high skilled operator and costs a lot. So, medium and small size shipyards have pursued other way to obtain the generating and the nesting due to an economic and a technical problems. Therefore, this research is to develop a program for the generating of pieces with parametric macro method and a STRIP program for the nesting of pieces by PC.

• The Journal of Information Technology and Database
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• v.4 no.1
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• pp.31-50
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• 1997

객체지향 데이터베이스 시스템에서 시간지원 데이터베이스를 다룰 때 발생하는 중요한 문제는 관계 의미에 따라 시간과 속성을 결합하는 방법에 있다. 관계형 모델처럼 속성 버전화에 대한 기존의 연구 결과는 시간지원 객체지향 모델에 적용할 수 없다. 이것은 객체지향 모델이 복합 객체를 구성하기 위해서 기존의 모델보다 더욱 강력한 구성자들을 제공하기 때문이다. 그래서 이 논문은 객체지향 데이터베이스에 시간 개념을 통합하기 위한 형식적 접근방법을 제안한다. 이 논문의 목적은 객체 사이에 관계하는 일반화, 집단화와 연관화에 따라 시간지원 객체지향 데이터베이스 표현을 연구하는 것이다. 이 논문은 시간지원 객체지향 모델에서 속성 버전화의 개념을 정의하고, 객체 사이에 존재하는 관계에 대해서 시간을 표현하는 것에 중점을 둔다. 또한 관계 의미에 대한 제약조건을 규정하고, 표현 기준에 기반하여 검토한다. 이 논문은 객체지향 데이터 모델을 형식화함으로써 대수 연산자의 설계시 강력한 연산 기능을 제공할 뿐만 아니라 모듈의 재사용성을 제공할 수 있다.

• The Journal of Information Technology and Database
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• v.4 no.1
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• pp.105-116
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• 1997

분산처리 시스템을 위한 소프트웨어 개발 방법 및 이를 지원하는 프레임워크의 개발은 분산처리 시스템을 위한 좋은 소프트웨어의 개발을 위해 매우 필요한 일이라 할 수 있다. 즉, 분산처리 시스템을 위한 신뢰성 있고 적합성과 확장성을 가진 소프트웨어의 개발은 매우 중요한 일이다. 자치적 분산처리 시스템(Autonomous Decentralized Systems)은 온라인 확장성과 온라인 유지보수성 및 fault tolerance기능을 가진 분산처리 시스템이다. 이 논문에서는 자치적 분산처리 시스템을 위한 객체지향 소프트웨어 개발을 지원하는 프레임워크에 대하여 논한다. 이 프레임워크는 객체지향 요구 분석과 객체지향 설계, 구현, 프로세서에 타스크(task)의 할당, 검증 및 유지보수로 구성되어 있으며, 온라인 확장성과 온라인 변경성(modifiability)을 지원한다. 자치적 분산처리 애플리케이션 소프트웨어 개발을 지원하는 프레임워크는 객체지향 computation 모델을 근간으로 하고 있다. 이 논문에서는 프레임워크외에도 자치적 분산처리 소프트웨어 개발을 위한 CASE(Computer Aided Software Engineering) 환경에 대하여서도 논한다.

• Management & Information Systems Review
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• v.11
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• pp.45-69
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• 2002

One of important technology that must improve compulsorily on information-oriented society stores, search and transmit cultural contents data of great quantity in heterogeneous environment. SAN appeared by solution to resolve the problem such as integration management of heterogeneous system data, effective practical use of storage, data transmission limit is happened from here. SAN is system that manage and shares data of large quantity efficiently attaching directly to high speed network such as Fiber Channel that storage system has been attached to server individually SAN became more complicated than existent storage environment although offer much advantage such as decrease of storage expense and flexibility of system configuration. This study argues management way could consider in such environment that understand complexity and component of networked storage system.

• Journal of Digital Convergence
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• v.5 no.1
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• pp.101-116
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• 2007

The purpose of this paper is to suggest field-oriented policy of regional innovation support system. To accomplish this purpose, we examined the status quo of technical support, performance satisfaction of consumers and practical issues. The key factors influencing core technical innovation of small and medium firms are development fund, R&D employees, experimental instrument, technical information, protection of intellectual property, subcontracting and so on. To make sure of practical effect, therefore, it would rather necessary to implement policy support linking government and supporting means on the ground of needs of small and medium firms than specific method such as funding.

• Proceedings of the Korea Society for Simulation Conference
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• 1999.10a
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• pp.210-216
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• 1999

Todays computer communication technology let people to do many unrealistic things possible and the use of those technologies is becoming increasingly prevalent throughout the military operation. Both DIS and ADS are welled defined computer aided military simulations. This study discusses a simulation of stochastic combat network modeling through Internet. We have developed two separate simulation models, one for clients and another for server, and validated for conducting studies with these two models. The object-oriented design was necessary to define the system entities and their relationship, to partition functionality into system entities, and to transform functional metrics into realizations derived from system component behaviors. Heterogeneous forces for each side are assumed at any battle node. The time trajectories for mean number of survivors at each node, some important combat measures, and relative difference computations between models were made. We observe and may conclude that the differences exist and some fo these are significant based on a limited number of experiments.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.72-76
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• 2005

This event recorder system, owing to the advancement of communication technology, is independently installed in most on-board electronics and given integrated management by on-board monitoring equipments. However, since the safety oriented equipments such as signalling devices, train protection systems, and train radios have been mounted on trains recently" the existing on-board monitoring device is no longer reliable enough for permanent preservation of data from train crashes or fires. This study has pointed out the problems mentioned above and described the designing concept of the fault recording system for high-speed trains for effective utilization of the train management program.