• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.9 no.1
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• pp.69-75
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• 2010

Today, our country is experiencing serious graying without parallel. The government is executing various services and welfare policies to solve this problem using ubiquitous technology. But the old and disabled people are not good for using the u-service and system, because it is made for ordinary people. The purpose of this study is to solve the graying society-problem and improve the eldery as well as disabled's quality of life by integrating each information centers based on ESB(Enterprise Service Bus). The results of this study can be divided by system architecture and communication system for the eldery and disabled. The research development results of this study can be used to build the integrated information center for u-service of the old people and disabled. It will contribute to realizing the Ubiquitous-society by promotion of young people's quality of life as well as the eldery and disabled.

• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.181-184
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• 2007

Up to now, a lot of houses, roads and other urban facilities have been damaged by natural disasters such as flash floods and landslides. It is reported that the size and frequency of disasters are growing greatly due to global warming. In order to mitigate such disaster, flood forecasting and alerting systems have been developed for the Han river, Geum river, Nak-dong river and Young-san river. These systems, however, do not help small municipal departments cope with the threat of flood. In this study, a real-time urban flood forecasting service (U-FFS) is developed for ubiquitous computing city which includes small river basins. A test bed is deployed at Tan-cheon in Gyeonggido to verify U-FFS. Wireless sensors such as rainfall gauge and water lever gauge are installed to develop hydrologic forecasting model and CCTV camera systems are also incorporated to capture high definition images of river basins. U-FFS is based on the ANFIS (Adaptive Neuro-Fuzzy Inference System) that is data-driven model and is characterized by its accuracy and adaptability. It is found that U-FFS can forecast the water level of outlet of river basin and provide real-time data through internet during heavy rain. It is revealed that U-FFS can predict the water level of 30 minutes and 1 hour later very accurately. Unlike other hydrologic forecasting model, this newly developed U-FFS has advantages such as its applicability and feasibility. Furthermore, it is expected that U-FFS presented in this study can be applied to ubiquitous computing city (U-City) and/or other cities which have suffered from flood damage for a long time.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.706-709
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• 2008

최근 u-City나 Eco-City와 같이 IT 기술들이 도시 공간에 융합됨으로써 점차 지능형 도시로 발전되고 있고, 도시에 거주하는 사람들은 자신의 주변 상황에 맞게 자연스럽게 필요한 서비스를 제공 받게 될 것이다. 이와 같이 향후 유비쿼터스 도시 운영을 위해서는 다양한 GeoSensor를 도시 전체에 구축하고 계속해서 모니터링 해야 만 한다. 본 논문에서 제안한 룰 기반의 이벤트 처리 기술은 넓은 지역에 걸쳐 구축되어 있는 GeoSensor 네트워크로부터 센서 데이터를 수집하여 도시내에 발생되는 다양한 상황들을 효과적으로 모니터링 할 수 있다.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.15 no.4
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• pp.100-107
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• 2007

We proposed the concatenation of logistics' Information to constructing the intelligent logistics city that is to manage efficiently cargo distribution as providing at real-time information of cargo location trace and management through the Telematics/RFID. Case of the Incheon of the "Air Logistics Hub", this area is on an increasing trend on the quantity of cargo transport of the Air & Sea cargo system until 2006. As intelligent project of the Air's and the Sea's field is independently developed at each area, it is a problem on the concatenation of logistics' information such as freight location trace and management, operation management and route information of cargo vehicles. Therefore, we propose the advanced transport service model for the concatenating smoothly of Air & Sea cargo system. In this paper, we only manage the model of Air & Sea cargo system of the advance logistics city.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.2
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• pp.422-429
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• 2007

Location awareness is one of the key functionalities to build an U-city. Recently, many of works of the location-aware systems are emerging to commercially apply to on-going large-scale apartment complex based on U-city. As dwellers or cars being attached with active tags are moving in the U-city complex, the active tags periodically broadcast their own identifiers and receivers fixed along the street or in building use those information to calculate location of them. There are several issues to be considered for such an environment. The first is that the number of active tags operating in the same region are large as much as tens of thousands, and the second is that the active tags should be alive without change of batteries more than a year, hence low power consumption is very important. In this paper we propose i) a new architecture for location-aware system considering such issues, ii) technical issues to implement it using active tags, and iii) a mathematical analytic model to investigate overall performance and verify it by comparing with actual experimental results. Through the analysis we can show the theoretical boundary of the lowest packet loss rate and the maximum number of tags with acceptable performance for the systems based on active tags. The results can be applied to practical design of location-based systems of U-City projects.

• Journal of the Korean housing association
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• v.20 no.5
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• pp.1-8
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• 2009

Ever-developing information and communications technology has changed the ways of life from that of industrial society to the information-oriented community, and is widely used in a variety of social and economic contexts. Besides, urban problems in today's society are intricately involved so that the possibility of any reliable breakthrough may not to be likely. To work out these complicated problems as well as to understand the crux of the matter more comprehensively, ubiquitous urban planning has been laid out, and as a result attempts to reflect this system are cautiously made in metropolitan areas. However, most u-City planning, integrating uibiquitous technology, has focused on creating urban infrastructure and its services, therefore neglecting the importance of housing in urban space. Consequently, thorough u-City planning has yet to be defined in relation with urban space, and housing planning, established on the basis of the user-oriented housing environment, needs to be urgently made. Centering on the importance of housing in the construction of an improved future urban environment, this study aims to discuss the role of urban environment planning where metropolutan residents can enjoy a comfortable and convenient life. As well, this research paper seeks to focus attention on the consideration for users that is often disregarded but requires reflecting in the u-City planning.

• 한국공간정보시스템학회:학술대회논문집
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• 2005.11a
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• pp.87-91
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• 2005

최근 언론매체나 인터넷을 통해 자주 접하게 되는 용어 중 하나가 '유비쿼터스'이다. 각종 서비스, 도시건설, 아파트 등 다양한 대상에 'Ubiquitous' 또는 'U-'라는 수식어를 붙이는 것을 흔히 접할 수 있으며, 마치 매우 편리한 환경을 상징하는 키워드처럼 인식되고 있다. 이와 관련하여 현재 우리나라에서는 정보화도시(U-City 또는 디지털시티라고도 함) 건설 추진 및 그에 대한 논의가 활기를 띠고 있다. 이를 통한다면 우리나라는 건설 및 IT강국이라는 핵심역량을 바탕으로 내수경기 부양뿐만 아니라 지역 간 불균형을 해소할 수 있고, 국내성공 사례로 글로벌 시장개척을 위할 수 있으며 넓게는 동북아 비즈니스 허브구축의 발판이 마련될 수 있겠다. 이밖에도 정보화도시(U-City)건설은 많은 산업화의 가치를 가지고 있기 때문에 정부와 지자체, 또한 기업체에서 기술 개발 및 시범사업에 박차를 가하고 있다. 그러나 새로운 도시유형으로서 정보화도시(U-City)의 개념은 아직까지 제도적으로 정립되어 있지 않을 뿐만 아니라 도시건설 시 어떤 특별한 유인책도 마련되어 있지 않다. 그리하여 지방자치단체, 공기업 등 추진주체마다 전개되는 양상이 다르며 이에 수반되는 다양한 문제가 발생한다. 따라서 정보화도시(U-City)의 성공을 위해서는 글로벌 인재들이 유인할 수 있는 매력을 갖추어야 하며 사회적 투자를 지속시킬 수 있는 효과적 방안이 필요하겠고 핵심기술과 이의 활용방안이 마련되어야겠다. 그러나 무엇보다도 정보화도시 건설관련 법, 제도, 사회시스템 정비가 선행되어야하겠다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.238-247
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• 2008

최근 IT(Information Technology)산업의 가장 핵심적 키워드는 산업 내 혹은 산업간의 융합화 즉 컨버전스(Convergence)라 할 수 있다. 즉, IT를 매개로 서로 다른 분야의 기술들이 상호 융합되어 새로운 서비스 또는 기술을 제공하는 융합화 현상이 나타나고 있다. 이러한 융합의 핵심에는 유비쿼터스라는 패러다임이 있으며, 유비쿼터스 패러다임은 도시에 대한 새로운 시각을 제공하였다. u-City는 첨단 정보통신 인프라와 유비쿼터스 정보서비스를 도시공간에 융합하여 도시생활의 편의 증대와 삶의 질 향상, 체계적 도시관리에 의한 안전보장과 시민복지 향상, 신산업 창출 등 도시의 제반기능을 혁신시킬 수 있는 차세대 정보화 도시로 정의된다. 성공적인 u-City 건설을 위해선 기존의 지자체GIS 개념을 확대하여 지능형 도시공간정보의 개념이 필요하며, 지능형 도시공간정보를 효율적으로 서비스하기 위한 서비스 표준체계가 필요하다. 즉, u-City의 실질적 구현 및 운영을 위해서는 정보(컨텐츠)가 필요하며. 이를 위해선 도시공간정보의 상호운용성의 확보가 필요한 시점이라 할 수 있다. 이에 본 연구에서는 지능형 도시공간정보의 개념과 지능형 도시공간정보 서비스 표준체계를 제시하도록 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.73-74
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• 2009

정보통신 기술과 무선 통신기술의 발달은 서로 다른 종류의 임베디드 시스템들이 상호작용을 가능하도록 만들었고, 이러한 작용은 언제, 어디서나, 누구나 자유롭게 네트워크에 접속 할 수 있는 유비쿼터스 환경으로 이어졌다. 본 논문에서는 임베디드 시스템 개발방법인 프로토타이핑 방법과 증강현실기술을 이용하여 적은 비용으로 효과적인 u-City 시뮬레이션 모델을 구현하였다.

• Journal of the Korean Society of Hazard Mitigation
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• v.8 no.2
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• pp.65-73
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• 2008

Since the damages caused by disasters increase every year associated with wrenching climatic changes and the diversification of the social structure, the efficient management system is required to reduce damages and an assessment of the vulnerable disaster areas is necessary to prevent and mitigate the damages. In this paper, we have estimated the vulnerable disaster areas based on the records of the past damage histories and performed the risk assessment of the social infrastructures in Busan city to provide the fundamental information for the real-time monitoring system and the systematic approach for disaster prevention system to build V-City model. These results are illustrated by using Geographical Information System (GIS) and the order of vulnerable disaster areas are also estimated.