• Bulletin of the Korean Mathematical Society
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• v.48 no.4
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• pp.839-845
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• 2011

In this paper, we consider the cusum of squares test for the dispersion parameter in stochastic differential equation models. It is shown that the test has a limiting distribution of the sup of a Brownian bridge, unaffected by the drift parameter estimation. A simulation result is provided for illustration.

• IT SoC Magazine
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• s.9
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• pp.10-33
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• 2005

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.05a
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• pp.132-139
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• 2005

대한민국 정통부는 IT 산업의 경쟁력 강화를 통한 국가경제발전을 유도하기 위해 8대 서비스, 3대 인프라, 및 9대 신성장동력을 연계하여 시너지효과를 극대화하는 IT 839전략을 마련하여 강력하게 추진 중에 있다. 이러한 상황 하에 향후 IT시장의 선택과 집중을 통한 정책적 육성발전방향을 제시하기 위해서는 9대 신성장동력간 가치사슬에 대한 이해가 최우선 돼야 한다. 본 연구에서는 다차원척도법을 이용하여 IT 신성장 동력 간의 연관성 분석, 시간의 변화에 따른 이동방향 분석, 및 성장동력의 속성을 반영한 PROFIT분석 등을 실시하였다. 본 연구의 결과는 전략적 중요도가 큰 산업 및 분야를 선별 할 수 있을 뿐만 아니라, 효과적인 정책적 투자를 유도하기 위한 전략을 모색할 수 있을 것으로 기대가 된다.

• 한국디지털정책학회:학술대회논문집
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• 2005.06a
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• pp.463-474
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• 2005

There are many challenges to solve on how we will use IT infrastructures accepted as the best worldwide level for strength of country's competitiveness. Over the past years, IT environment has been formed to expand the basis of e-Business by policy, but little contributed to management efficiency such as improvement of business productivity through utilization of it. This paper explores the category of the related technology policies by classifying e-Business technologies and presents the problems and developmental directions for those policies by investigating the trends of the policies which have been framed so far. Especially, this article also examines the differences between the technology policy on the road map of 2010 e-Business policy and the IT839 strategy.

• Proceedings of the KSRS Conference
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• v.2
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• pp.836-839
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• 2006

Telematics, one of the so-called New Growth Engine of IT839, is a leading IT service where wireless internet service represented by information and mobility is extended to the area of transportation. To provide telematics service, Telematics service provider have to connect with various Contents Provider or Service Provide server - for example - LBSS(Location Based Service Server), ASPS(Application Service Provider Server), TELICS(TELematics Information Center Server), GMS(Geo-mobility Server), WTPS(World Telematics Protocol Server) and MAUS(Map Air Update Server). Presently, It is nearly impossible or very difficult for the company that are manufacturing and testing telematics device to develop and test telematics solution without connecting Telematics Service Provider, Service Provider, Contents Provider. And, it is very difficult to connect in TSP, CP, SP having the product to be developed. In this paper, we proposed virtual telematics service provider. The proposed Virtual Telematics Service Provider is to provide telematics services and functionalities by integrating telematics servers into TSP gateway virtually. In other words, VTSP is performs with the role of TSP, CP, SP. And the VTSP support integration of telematics servers, interfacing and monitoring between terminal and the integrated servers.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1112-1114
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• 2005

Core position of the M2M (Machine to Machine) is device integration fusion using an emerging wireless and next internet technologies as well as IEEE 802.x, Bluetooth, Zigbee, DMB, Wibro etc. for ubiquitous environment that is complementary with IT839 strategy from Ministry of Information & Communication. This paper define and deploy about major functional requirements of M2M devices and middleware for how to it works, worldwide M2M technology trend & activities with its current & future application in manufacturing area that is called u-Manufacturing (Ubiquitous Manufacturing).

• Journal of Korean Electronics
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• v.25 no.12
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• pp.32-33
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• 2005

• the Consultant
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• s.22
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• pp.82-108
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• 2005

• 정보화사회
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• s.178
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• pp.20-21
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• 2006

• Information and Communications Magazine
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• v.21 no.9
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• pp.13-22
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• 2004