• Journal of the Korea Society of Computer and Information
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• v.14 no.7
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• pp.143-150
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• 2009

Recently "Green IT" technology has been attracting public attention that the Ministry of Environment has come up with new plans to make "low carbon and green growth" technology and to promote u-City industries. Making an offer, Uubiquitous Service needs RFID/USN Middleware to handle heterogeneous RFID/USN devices in order to gather existing informations. In this paper, we propose the design and implementation of a dynamic management method for heterogeneous RFID/USN devices. In compliance with the paper I will furnish Uubiquitous Service regarding existing circumstances by handling heterogeneous RFID/USN devices such as new RFID/Sensor devices addition and deletion and so on.

• Management & Information Systems Review
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• v.31 no.1
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• pp.167-182
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• 2012

Recently, interesting of u-city with ubiquitous computing technologies has increased. In this paper, we propose u-service model for urban facility management based on ubiquitous computing technologies. To propose the research purpose, we define business model for the service and u-service model. And, we propose service function, service process, and relationships between participants to give shape to u-service model. First, we present five service functions; remote monitoring, remote control and inquire, state information, field support, and facility history information. And, we propose overall service process and demand-supply relationship between participants.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.01a
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• pp.187-188
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• 2022

우리나라는 세계 최초로 유비쿼터스 도시(Ubiquitous City: U-City) 관련 법률을 제정하고 종합계획을 수립하는 등 스마트시티 관련 정책을 선도적으로 추진해 왔으며, 현재 스마트시티 정책은 스마트시티 국가시범도시 건설, 스마트 챌린지, 스마트도시형 도시재생사업 등 다양하게 추진 중이다. 본 연구에서는 최근 정보통신의 발달에 따른 디지털화 시대를 맞이하여 해외의 스마트정책 사례를 조사 및 분석하여 국내 도시문제 해결로 시민들의 삶의 질 향상을 위한 스마트시티를 구축할 수 있는 시사점을 도출할 예정이다.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.26 no.8
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• pp.52-59
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• 2008

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.475-479
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• 2008

Ubiquitous technology is believed to be the next trend following the 3rd wave by information technology to revolutionize the modern society. Ubiquitous construction which is the convergence of ubiquitous technology and construction technology is the blue ocean area for creating new values in the construction industry and therefore requires pro-active participation from construction companies. Many expect that the ubiquitous society would get started in the year of 2008 and the year 2015 be the time of maturity. The importation of 100 U-Cities to foreign countries would be a new driving force for the growth of our economy and construction industry.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.12
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• pp.6597-6601
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• 2013

This study aims at suggesting a evaluation method of water cycle soundness in U-City. The distortion of water cycle soundness induced industrialization and urbanization was quantitatively analyzed. In order to evaluate the soundness of water cycle in U-City the reduction ratio of runoff was evaluated in comparison of before the construction of the water recycling facilities for natural water cycle, the reduction ratio of urban water was evaluated in comparison of before the introduction of the artificial recycling facilities for artificial water cycle.

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.88-97
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• 2010

Recently the more convenient services are provided to people in the city in line with the change of city paradigm and the recent development of ubiquitous. For example, Information on bus arrivals an effective advertisement the combination of high technology and departures through smart-phones. However, in respect of the mobile advertisement, because of difficulties such as the means of transferring the mass storage data or the burden of communication charges. there need means to improve such difficulties. This study has been conducted aiming to overcome such difficulties. This study suggests the strategic differentiation plan through the analysis of the media characteristics such as real time service information when in traveling, U-Bus business model in the category of mobile advertisement, etc. and also the concrete system establishment plan from the operation center via network to the delivery of the advertisement through vehicle terminals. In respect that this study suggests the implications as a practical business model through the fusion of high technology and diverse media. It has great significance.

• Journal of the Korean Association of Geographic Information Studies
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• v.14 no.4
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• pp.150-160
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• 2011

IT convergence and integration technology aims to create new synergies by combining IT related technology and performance. This study conducted a basic research for combining construction and IT technology to create new synergies. Specifically, the purpose of this study is to combine USN and GIS technology and then apply it to urban facilities management. For this, we have developed the USN hardware, tested propagation communications, and made the GIS Algorithm and a system. Existing sensor node allocation method is mostly to install in a random way or with in-situ survey, but the problem with this method is contradictory to cost effectiveness and efficiency. To solve this problem, we developed a new method for sensor allocation. Using this method, the USN technology could be applied in the range of city unit. This technology can be applied to the ubiquitous urban development such as U-City and Smart City.

• Journal of Internet Computing and Services
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• v.15 no.3
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• pp.45-52
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• 2014

The Ubiquitous-City (U-City) is a smart or intelligent city to satisfy human beings' desire to enjoy IT services with any device, anytime, anywhere. It is a future city model based on Internet of everything or things (IoE or IoT). It includes a lot of video cameras which are networked together. The networked video cameras support a lot of U-City services as one of the main input data together with sensors. They generate huge amount of video information, real big data for the U-City all the time. It is usually required that the U-City manipulates the big data in real-time. And it is not easy at all. Also, many times, it is required that the accumulated video data are analyzed to detect an event or find a figure among them. It requires a lot of computational power and usually takes a lot of time. Currently we can find researches which try to reduce the processing time of the big video data. Cloud computing can be a good solution to address this matter. There are many cloud computing methodologies which can be used to address the matter. MapReduce is an interesting and attractive methodology for it. It has many advantages and is getting popularity in many areas. Video cameras evolve day by day so that the resolution improves sharply. It leads to the exponential growth of the produced data by the networked video cameras. We are coping with real big data when we have to deal with video image data which are produced by the good quality video cameras. A video surveillance system was not useful until we find the cloud computing. But it is now being widely spread in U-Cities since we find some useful methodologies. Video data are unstructured data thus it is not easy to find a good research result of analyzing the data with MapReduce. This paper presents an analyzing system for the video surveillance system, which is a cloud-computing based video data management system. It is easy to deploy, flexible and reliable. It consists of the video manager, the video monitors, the storage for the video images, the storage client and streaming IN component. The "video monitor" for the video images consists of "video translater" and "protocol manager". The "storage" contains MapReduce analyzer. All components were designed according to the functional requirement of video surveillance system. The "streaming IN" component receives the video data from the networked video cameras and delivers them to the "storage client". It also manages the bottleneck of the network to smooth the data stream. The "storage client" receives the video data from the "streaming IN" component and stores them to the storage. It also helps other components to access the storage. The "video monitor" component transfers the video data by smoothly streaming and manages the protocol. The "video translator" sub-component enables users to manage the resolution, the codec and the frame rate of the video image. The "protocol" sub-component manages the Real Time Streaming Protocol (RTSP) and Real Time Messaging Protocol (RTMP). We use Hadoop Distributed File System(HDFS) for the storage of cloud computing. Hadoop stores the data in HDFS and provides the platform that can process data with simple MapReduce programming model. We suggest our own methodology to analyze the video images using MapReduce in this paper. That is, the workflow of video analysis is presented and detailed explanation is given in this paper. The performance evaluation was experiment and we found that our proposed system worked well. The performance evaluation results are presented in this paper with analysis. With our cluster system, we used compressed $1920{\times}1080(FHD)$ resolution video data, H.264 codec and HDFS as video storage. We measured the processing time according to the number of frame per mapper. Tracing the optimal splitting size of input data and the processing time according to the number of node, we found the linearity of the system performance.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2006.05a
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• pp.380-381
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• 2006

정보과학기술의 발달 등으로 미래도시는 많은 변화가 예상되며, 이로 인한 여러 가지 부정적인 영향도 예측되고 있어 개인적이고 비인간적인 사회출현도 우려된다. 그러나 지금까지의 도시발달과 흐름을 살펴볼 때 급격한 사회변화에 대한 역기능에 대해 방어수단을 마련하고자 근린체계가 잘 조성된 쾌적하고, 안전하며, 그리고 무엇보다도 좀 더 인간적인 모습을 갖추기 위한 다양한 노력이 시도될 것이다. 향후 미래도시에서는 보다 인간적이고 커뮤니티가 활성화된 도시를 구축하기 위해 공원녹지도 중요 수단의 하나가 될 것으로 보인다. 미래도시 유형의 하나인 V-CITY의 발전방향을 예측하고 살펴봄으로써 공원녹지의 바람직한 발전방향을 마련해야 할 것이다.