• 한국공간정보시스템학회:학술대회논문집
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• 2005.11a
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• pp.121-134
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• 2005

본 논문에서는 u-Korea를 구축하기 위한 유비쿼터스 서비스의 단계별 진화모델을 개발하고자 한다. u-Korea 서비스의 단계별 모델을 개발하기 위하여 우선 유비쿼터스 소요 기술을 분류하여야 하고 이것은 네트워크, 미들웨어, 단말 및 응용으로 구성된 각 계층 유비쿼터스 기술구조로 구분될 수 있다. 그리고 각 기술의 발전 방향 등을 토대로 각 계층에 대한 로드맵을 작성 한다. 다음 단계에서는 소요 기술의 개발 수준과 구성 요소를 기반으로 유비쿼터스 서비스를 위한 참조모델을 제안하고, 각 서비스의 지능화 수준과 서비스 기술 로드맵에 따라 첫번째 P-to-M 커뮤니케이션, 두 번째 상황인지, 세 번째 자율성 단계로 유비쿼터스 서비스의 점진적 3단계 발전 방안을 제시한다. 그 후 제시된 진화 방법에 따라서 보건 복지 분야의 국내외 유비쿼터스 서비스 사례를 분석하고, 점진적으로 개발되어지는 유비쿼터스 모형을 적용하여 보도록 한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.10a
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• pp.264-267
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• 2005

정보통신기술의 급속한 발전과 함께 나타난 다양한 응용 기술로 인해 인간의 생활은 커다란 변화를 겪고 있으며, 비즈니스 전반에 걸쳐서도 많은 변화를 초래하였다. 특히 ‘유비쿼터스 컴퓨팅’이라는 용어가 일상화되면서 새로운 이익의 창출이나 비즈니스의 혁신을 가능하게 하는 유비쿼터스 비즈니스가 등장하게 되었다. 본 연구는 유비쿼터스 비즈니스의 특성을 제시하고 유비쿼터스 컴퓨팅 기술과 관련된 로드맵에 그 특성을 적용함으로써 유비쿼터스 비즈니스의 발전방향을 분석해보고자 한다.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.2
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• pp.248-253
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• 2009

In this paper, we have studied about the ubiquitous service map for the effective u-City service providing. Through the research, we are going to propose the fact that it can be implemented ubiquitous services according to city characteristics. The proposed research could make it possible to be an intelligent decision making system by city characteristics. Also, nation, local government, companies can be assigned their appropriate load according to the proposed system for the effective u-City services.

• Journal of Internet Computing and Services
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• v.11 no.2
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• pp.173-184
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• 2010

The advancement of ubiquitous networks facilitates and increases access to the Internet via mobile devices, which offers the advantages of enhanced mobility and accessibility. While Mobile Internet is largely free of temporal and spatial restrictions, producing content for mobile websites is a challenging work due to the existence of multiple device types and markup languages. This paper proposes a technique that makes use of image maps to improve the visual consistency of mobile web content displayed on a variety of mobile devices. The proposed image map method captures several objects comprising the webpage into a single image, and provides the image in Mobile Web services. Mobile devices employing the proposed method can reorganize webpages with multiple objects more easily and obtain the visually identical content on their screen.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.48 no.4
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• pp.61-68
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• 2011

Event-based service technology integrate service to detect events that occur in real time by analyzing the response. Is the core technology for real-time business and ubiquitous service environment construction. Is required event-based service technology on business processes in real-time business environment that providing rapid response to changing and custom service using a variety of information real-time monitoring and analysis in ubiquitous service environment. Last event-driven business processes can be used as a CEP(Complex Event Processing). The core of CEP technology, the event from multiple event sources analysis of events affecting and the way to handle action, is detect complex event to user. In previous studies, an event occurs that continue to perform without the need for partial operations. so many operations and spend a lot of memory is a problem. To solve these problems, event detection technique is proposed that large streams of data without processing any events, registered to configure a complex event occurs when all events in the application layer, complex event processing. The proposed method, first using a bitmap index to manage the event occurs. The complex events of the last event in response to define a trigger event. The occurrence of an event to display a bitmap index, a composite event occurrence of all event to configure the test through the point at which a trigger event occurs. Is proposed, If any event occurs to perform the operation. The proposed scheme perform operations when all event occurs without events having to perform each of the tests. As a result, avoid unnecessary operations and reducing the number of events to handle the increased efficiency of operations.

• Informatization Policy
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• v.17 no.2
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• pp.45-67
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• 2010

This study is to reconstruct the user-oriented e-government service based on home network infrastructure using ubiquitous computing technology. Until now, 31 e-government roadmap tasks have been promoted as main projects of e-government. This study explores what should be respective priorities for the suppliers and users of e-government if the services are provided in linkage with home network infrastructure. The result of survey showed us that the efficiency of administration and the improvement of the civil service, including citizens' online participation should be priorities. In order to reinforce home network infrastructure in implementing u-government, the government, at first, has to relax regulation, support businesses to develop related technologies, and construct safe infrastructure for citizens to use e-government services. Second, businesses should develop home network technologies that include various contents and construct home network systems that citizens can use easily. Third, citizens should have interests and participate in the government policies for home network services. Particularly, this study aims to suggest policies that consider positions of both the suppliers and users of e-government so that home network-based e-government can be implemented in the future.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.10
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• pp.2242-2250
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• 2009

Recently, with the advance of Ubiquitous era, the types of services become diverse. Especially, due to the rapid development of mobile technology, the new functions of mobile phones are added and the new applications of mobile phones are developed actively. Among the various applications related to mobile phones, 2 dimensional barcode-based applications are increasing. 2 dimensional barcode is mostly used for the management of past record. However, by combing 2 dimensional barcode with mobile phones, the application areas of 2 dimensional barcode are expanded to the means of publicity for education, tourism, and festivals. In this paper, we develop a QR code decoder running on smartphones, which connects on-line and off-line. In addition, we modify our decoder by detecting the point for performance enhancement based on TRIZ. We compare our decoder with an open-source based decoder in terms of the code size of decoding and the speed of decoding in order to prove that our decoder has a better performance than the other. Finally, we introduce two applications: u-map and u-pamphlet as QR code applications.

• Journal of Internet Computing and Services
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• v.10 no.5
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• pp.13-26
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• 2009

Wireless Sensor Networks (WSNs) is one of the key technologies that make it possible to provide u-service in a ubiquitous society, however, it has disadvantages such as difficulty of managing sensor nodes and weaknesses of stability or mobility in large-scale WSNs. In order to solve these problems, 6LoWPAN that integrates with WSNs and IP networks has been studied widely. In this paper, we propose a Location Tracking Service Based on Google Map (LTSGM) system using 6LoWPAN. Since LTSGM system provides visual location information of sensor nodes through Google Map, it is possible to makes it easier than ever to manage sensor nodes in large-scale WSNs. Moreover, LTSGM can be used for various services such as applications for disaster or crime because it can trace the location of mobile nodes. Implementation of LTSGM system will be a test platform for 6LoWPAN.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06d
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• pp.455-460
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• 2008

건설교통부는 국가미래에 대비해 실질적으로 기여할 수 있는 전략적이고 중장기적인 실효성 있는 R&D 혁신 로드맵인 VC-10 사업을 진행하고 있다. 이 과제의 핵심 기술 중에 하나인 유비쿼터스 센서네트워크는 초소형 센서들로 구성된 망으로써 환경 및 재난 재해, u-City 건설, 스마트 하이웨이, 방범 및 국방, 시설 관리, 유통, 등과 같은 다양한 분야에 사용할 수 있는 유비쿼터스 사회의 핵심 요소이다. 이것은 실시간 네트워크를 통해 전송 또는 관리되고 언제, 어디서나, 어떠한 대상과 의사소통이 가능한 지능형 컴퓨팅 환경을 구현하는 것이다. 그러나 이러한 기술을 바탕으로 하는 기존의 시스템들은 특정분야를 위한 독자적인 프로토콜이나 저전력 통신을 제공하는 ZigBee 기반으로 설계되었기 때문에 소규모 범위에서만 서비스 제공이 가능하며 시스템간의 연동이 어렵다. 따라서 본 논문에서는 유비쿼터스 센서네트워크간의 연동성을 고려한 대규모 실시간 모니터링 시스템을 설계하여 다양한 분야로 서비스할 수 있는 테스트베드 구축에 대한 방안을 제시하고자 한다. 여기서 모니터링 대상은 국토의 지반, 환경, 그리고 도심지역 등이다. 이렇게 제시된 방안은 국내실정에 적합한 모니터링 시나리오를 작성하여 테스트베드를 구축 시에 요구된 사항들에 대한 정당성을 입증한다.

• Journal of Korea Spatial Information System Society
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• v.11 no.1
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• pp.157-168
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• 2009

Geospatial information, which deeply has an effect on our life, have been evolved as intelligent geospatial information in Ubiquitous era. Also, Various services are introduced using the intelligent geospatial information. However, there is no classification system, for understanding the intelligent geospatial information services, considering any developers and users. It needs to be classification system to classify these services. In this paper, we introduced a concept of intelligent geospatial information and developed a service classification matrix regarding to the features of the services. This service classification matrix has three scales; service domain, service intelligent level, and geo-location accuracy. The propose of this matrix can be utilized in two aspects. First, the matrix can improve the reality that doesn't reflect actual demands for the services. Second, the matrix can present the goal of the new services or the development direction. The matrix can be utilized to the geospatial industry as creating the new blue ocean services. However, the service classification matrix needs to modify and complement to have no anything wrong when the various services are applied to the matrix. In the long run, the matrix has to be utilized as a material to make out a service roadmap or TRM(Technical Reference Model).