• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.635-640
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• 2007

유비퀴터스 사회에서 정보화 대상이 사람 사물 콘텐츠 등 모든 자원으로 확대됨에 따라, 이러한 자원들을 고유하게 규명할 수 있는 다양하고 상이한 식별체계가 다수 존재하고, 자원별 또는 자원 내에서 새로운 식별체계가 많이 등장할 것이다. 이에 따라 식별체계 간 상호운영성문제가 발생할 것이며, 다수의 식별체계를 기반으로 하는 응용서비스간의 연계가 매우 비효율적으로 이루어질 것이다. 따라서 본 연구에서는 식별체계 간의 상호운영성 미비로 발생할 수 있는 유비쿼터스 정보화의 문제점을 규명하고 이를 해결하기 위한 메타식별체계인 u식별체계 개발 및 구축방안을 제시한다.

• Journal of Advanced Navigation Technology
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• v.19 no.6
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• pp.643-647
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• 2015

Nowadays, ubiquitous technology which combines sensors and network technology is emerging and it is called ubiquitous sensor network (USN). In this paper, mobile application for baby care using smart sensor is proposed. The proposed mobile application consists of mobile networks to transfer the information. It detects various information such as falling detecting, crying and fever detecting of infants. It keeps infants from external threats. The developed mobile application will be examined by simulation.

• Proceedings of the KAIS Fall Conference
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• 2010.11a
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• pp.447-450
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• 2010

본 논문에서는 스마트 폰과 QR코드를 기반으로 하여 학사정보시스템에서 사용될 콘텐츠를 제안하였다. 최근 학생들이 많이 사용하는 스마트 폰을 활용하여 학사정보시스템을 효율적으로 사용할 수 있는 시스템의 구조와 콘텐츠를 제안하였다. 본 논문에서 제안한 시스템 구조와 콘텐츠는 수강신청을 하는데 있어 학생들이 언제 어디서나 수강신청을 위한 정보를 습득할 수 있는 환경과 콘텐츠를 제시하여 학생들이 전략적으로 사용할 수 있는 기반을 조성하는데 그 목적이 있다.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.2097_2098
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• 2009

'Ubiquitous' based on progressive development of IT technology is a new paradigm of the 21th century. In terms of rapid social and technological change, the architectural environment has been changed by computer networking system. According to the condition of the IT business, interior architectural space has been needed to consider applying IT technology for intelligent living environment. To develop the most appropriate architectural interior space applied by home network system, designers need to understand products of the home network system comprised by technical bases and classification of the system. This research is for introducing the information of the recent home network system, products and possible application of ubiquitous system for the future interior architectural space.

• Journal of Advanced Navigation Technology
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• v.15 no.1
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• pp.112-123
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• 2011

Recently, the Korean Pharmaceutical Association has a public service advertisements for medicinal misusing prevention and environment protection by medicinal substances. And the cost and procedure complexity was increased by specialization of dispensary and medical practice. To overcome this situation, we have use for medicine information system. Ubiquitous and convergence technology have become trends in the IT field. In this paper, we designed prototype of medicine information system and drug image searching based on mobile for management and prevention of medicinal misusing using IT technologies.

• Journal of Information Technology Services
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• v.11 no.3
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• pp.269-285
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• 2012

The spontaneous interoperation is an important characteristic of ubiquitous applications and is closely related with mobility. The mobile components in ubiquitous environments are liable to appear in and disappear from one physical space to another. Because this characteristic certainly influences the structure and behavior of applications, they should adapt themselves to the changed environments by configuring their structure and behaviors. Consequently, developers are faced with the above challenging issue when they design and implement ubiquitous applications. The role concept is an efficient tool to model participant entities, their relationship, and collaboration, so role-based model are appropriate to describe a structure and behavior of software system. But, little attention has been given to reflect characteristics of ubiquitous applications. To tackle the problem, this study considers a ubiquitous application as a software organization which consists of software components and proposes an enhanced role-based application model for supporting spontaneous interoperation.

• Journal of Industrial Technology
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• v.30 no.B
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• pp.55-59
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• 2010

The number of elderly people living alone increases with the trend of nuclear family in recent aging society and advances of health and medical technologies, where the safety of the elderly people becomes a big social issue. One of the safety system for them these days is that security guards regularly visit homes of the elderly living alone to check their safety. However, it is an inefficient system since it costs a great deal. So, a new efficient system with low cost using modern advanced technologies needs to be developed. In this paper, we implement a monitoring system for elderly living alone using ubiquitous sensor and zigbeX. The system can remotely determine the health status of elderly people and report to their hospitals. Since the system can be implemented with low cost and do the same job as security guards do, we expect that it should replace the existing expensive monitoring system.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.8 no.2
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• pp.67-73
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• 2008

Reconfigurable radio technology is needed to reconstruct frequency and modem functionality, which can be different within various regions. In addition, it makes it possible for a single mobile handset to support various standards of wireless communication, and thus plays a key role inmobile convergence. A MMIC VCO(Monolithic Microwave Integrated Circuit Voltage Controlled Oscillator) has been developed to produce high power and wide bandwidth that adapts the Clapp-Gouriet type oscillator for series feedback. We were fabricated based on the 0.15um pHEMT from TRW. The MMIC VCO was connected to an alumina substrate on the carrier for testing. This MMIC VCO module shows good performance when compared with existing VCOs. Futhermore, it has potential as a reconfigurable MMIC VCO for ubiquitous communications such as LMDS (Local Multipoint Distribution Service), VSAT, Point to Point Radio and SATCOM.

• Journal of The Korean Association of Information Education
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• v.8 no.1
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• pp.91-99
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• 2004

According to get ubiquitous environment, it is suggested to environment to get information with whichever terminal at any time wherever. Advancement of ability of mobile device increase requirement of wireless internet base solution. In this paper We developed distance education system based on wireless internet. This system has no problem of bandwidth and resolution of pocket pc because of using SWF(Shockwave Flash). It can maintain readability of high quality when size of resolution is changed but another graphic format can't maintain it.

• Journal of Information Technology Services
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• v.6 no.2
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• pp.99-112
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• 2007

In this study we designed the killer services for the scene of labor learning in ubiquitous computing. To achieve this study, we have explored the unmet needs of teachers in the scene of labor learning and examined whether the unmet needs could be served by the resources and capabilities of ubiquitous computing. Then, we have crafted a detail killer services that includes value propositions and resource maps by using statistical methodology. Finally, the killer services for the scene of labor learning proposed to serve educational users with the service architecture. The result of this study will be applied to develop new business model in ubiquitous computing as the basic research.