• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.383-386
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• 2007

Under the circumstance of Ubiquitous Society, service should be provided according to the users' location and environment. When specific service is demanded by user, the technology, which can help to detect whether there are devices performing the requested service in the ubiquitous network, is mandatory. This technology also should guarantee that users have the appropriate service through the most suitable device which is selected by this technology. The priority is an essential factor when multi service are asked by multi users simultaneouslyin the ubiquitous network, The paper focuses on realization of Smart Classroom which provides multi users, such as the professor and the students, with active services based on the Zigbee network and the Mobile platform.

• Journal of Korean Library and Information Science Society
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• v.48 no.2
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• pp.469-488
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• 2017

This study aims to explore the significance of homework help service as a library program to support young people in the community and investigate the characteristics of homework help services in U.S. public libraries. It reviews the previous literature on the cases and trend of homework help services in U.S. public libraries. It also investigates the practice and characteristics of homework help services using an email survey targeting public libraries that offer the services. The results are analyzed in terms of the user, collection, space, public relations and human resources of homework help services. This study may contribute to eliciting the service plan on homework help service in its planning and implementation stage in public libraries.

• Journal of Digital Convergence
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• v.11 no.7
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• pp.261-269
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• 2013

Ubiquitous healthcare is a recent technology and a new methodology of medical diagnosis and medical care. However, in order for u-Healthcare service to become a general technology, there are some technological barriers(mobility, minimization, battery consumption etc) to overcome. In this paper, we developed a spectrum analysis system for smart phones. The results showed that compared to other solutions, our's were not only small in size but also almost the same in performance(reproducibility comparison experiments, Spectrum, Calibration Curve and Prediction). Therefore, the proposed solution is expected to be widely used in u-Health area.

• Information and Communications Magazine
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• v.29 no.2
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• pp.52-58
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• 2012

u-T 연구단은 2006년부터 현재까지 약 5년 5개월 동안 한국교통연구원을 비롯한 교통, 통신 분야의 총 39개 전문기관이 참여하여 연구를 수행하였다. u-Transportation 구현하기 위해, System Engineering 기술, Technology Development, Service Development의 세부과제로 구성하였다. 1차년도~4차년도까지 u-T 기반기술을 개발하고, 5차년도는 개발된 u-T 기술의 기능과 성능을 극대화하기 위하여 실제 남양주시 일부 구간에 Testbed를 구축하여, u-T 기술과 서비스간의 통합과 서비스별 평가를 검증하였다. 향후, u-Transportation 기술이 활성화 된다면 언제 어디서나 쉽고 편리하게 접속 가능한 유비쿼터스 환경 하에서 교통상황에 적합한 맞춤형 정보를 제공해 줌으로써 도로이용자들의 통행선택을 다양화하여 도로 이용효율을 높일 수 있을 것이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37B no.11
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• pp.1004-1013
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• 2012

The legacy voice broadcast systems are used to broadcast the voice over an entire space or a specific zone. these broadcast systems generate unnecessary noise and waste of resources. In this paper, we propose a ubiquitous voice message broadcast system called uPaging, by combining the technique of location-awareness and the voice message delivery service in ubiquitous sensor network environment. In uPaging system, the wire/wireless hybrid network is used to implement the network system. Also, in order to actualize the location-awareness service, we use the Bidirectional Location ID-Exchange protocol was suggested by our previous research. the uPaging system can deliver the voice to a selected user or the location in which the user is present by this location awareness.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.4
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• pp.433-442
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• 2008

This research dealt with the methodological procedures of ubiquitous sensor networks, applying to urban ground facilities. Recently Korean government established a guide, "u-City IT Infra guide v1.0" when promoting u-City implement projects. This guide conceptually included general processes about u-City mainframe in overall, but its guidance could not lead the detailed procedures and methods for specific ground facility. Therefore, this research proposed the details of the procedure for the intelligence of facilities after reviewing the existing procedures for ubiquitous city. Newly proposed procedure for the intelligence of facilities was consisted of selection of facility and sensors for intelligence, setting a level for intelligence, and suggestion of service model for the selected facility.

• Journal of the Korea Society of Computer and Information
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• v.18 no.1
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• pp.103-110
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• 2013

RFID is estimated to have great potential for hospitals to reduce various costs, reconsider patients' safety, and provide high quality medical service. As the ubiquitous technology allows the medical market to expand, medical centers all around the country are fiercely competing against one another. In order to increase the hospital's competitive edge by reducing IT expenses and concentrating on medical practice, the need to establish a u-Hospital using advanced IT technology is rapidly rising. This paper implements an RFID based u-Hospital system by using ubiquitous computing technology to design a location tracking device for all surgical patients, which can secure the patients' safety and increase the quality of medical service through interlocking hospital information systems.

• Journal of Convergence Society for SMB
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• v.4 no.2
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• pp.1-5
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• 2014

Connotation and unlimited growth potential as the core infrastructure to implement the u-Korea RFID/USN is emerging to lead to a future Internet that can bring a huge transformation in the industry sector. On RFID/USN increase overall social interest of our country, if the world who want to dominate the market by securing the u-Korea vision and global RFID/USN technologies IT839 depending on the policy, has been active research on the USN and USN infrastructure in the future building is completed as quickly to take advantage of the USN. USN applications will increase. Of USN middleware and necessitate USN infrastructure-based application development in order to more easily USN middleware configuration directory service is one of the core services. USN infrastructure suitable for the directory service when considering the characteristics of WSN, such as the USN components, update existing directory services and search focused on the problem and receive, this paper can overcome this directory service design and implementation discussed.

• Journal of Intelligence and Information Systems
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• v.15 no.2
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• pp.75-95
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• 2009

The aim of this research is to design and analyze a social network service model using mobile RFID based business card. This paper suggests how the behavior of exchanging business cards will be changed in ubiquitous environment and designs a social networking service model using a ubiquitous business card, which embeds a RFID tag. We describe the scenarios and analyze a role, value and potential benefits of participants of the u-SNS service model. For the proof of the superiority and the feasibility of our model, we compare it with its related researches and products based on the calculation of the benefits and costs of the alternatives.

• Journal of Information Technology Applications and Management
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• v.15 no.1
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• pp.183-202
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• 2008

The introduction of a ubiquitous environment has realized commercial ubiquitous services in various industrial fields and government area. The central and/or local governments are demanding an appropriate investment evaluation model for ubiquitous service. Thus, this study develops and suggests an evaluation model for ubiquitous service by reflecting its characteristic of promoting public good, as well as its broad ripple effect on people. The investment evaluation model for ubiquitous service suggested by this study is based on Cost Benefit Analysis Method. Especially, the 'Benefit' is analyzed in two aspects; 'Economic Benefit', which shows the benefit that ubiquitous service providers to the overall local economy, and; 'Financial Benefit', which shows the profit of individual investors participating in the introduction of ubiquitous service. The investment evaluation model for ubiquitous service suggested by this study can be used by the central and/or local government during their evaluation for investment before introducing a ubiquitous service. Also, when introducing a ubiquitous service in public field, the model can be used to support the decision making of private businesses for investment. Finally, it can be used to promote and inform the expected benefits of introducing a ubiquitous service to local residents.