• Journal of the Korea Safety Management & Science
• /
• v.12 no.2
• /
• pp.99-105
• /
• 2010

In this paper, the uAPSS(u-APartment Service System) that is based on location-aware technology is designed and implemented for a luxury apartment. On the real luxury apartment the developed system has been employed and tested to provide convenient and secure living for residents. It provides services such as emergency call, intelligent elevator operation, and hands-free door access based on the location of the residents with personal device as called smart tag. It can also be applied to other service areas such as the location-aware u-Service for hospitals, high-rising complex buildings, silver towns, etc.

• Journal of the Society of Disaster Information
• /
• v.6 no.1
• /
• pp.92-119
• /
• 2010

As the necessity to utilize deep-placed underground spaces is increasing, we have to seriously consider the safety problems arising from the U/G spaces which is a restricted environment. Due to the higher cost of land compensation for above ground area and environmental issues, the plan to utilize deep-placed U/G spaces is currently only being established for the construction of U/G road network and GTX. However it is also expected that the U/G spaces are to be used as a living space because of the growing desires to change the above ground areas into the environmentally green spaces. Accordingly it is necessary to protect the U/G environments which is vulnerable against desasters caused by fire, explosion, flooding, terrorism, electric power failure, etc. properly. We want to introduce the principles of the Quantitative Risk Assessment(QRA) method for preparedness against the desasters arising from U/G environments, and also want to introduce an example of QRA which was implemented for the GOTTHARD tunnel which is the longest one in Europe.

• Proceedings of the Korean Society of Disaster Information Conference
• /
• 2015.11a
• /
• pp.232-234
• /
• 2015

본 연구에서는 무인기(UAV)를 활용하여 재난현장을 분석하고 uGIS기법에 의한 처리방안에 대하여 제시한다. 무인기는 군사적인 용도로 개발되면서부터 급속한 민간의 활용으로 확산되면서 소형에서 대형까지 매우 다양한 시스템으로 수 많은 분야에 적용되고 있다. 특히 무인기는 재난재해의 현장에 어떠한 수단보다도 원활하고 신속 정확한 분석과 모니터링을 동시에 수행할 수 있으며, 그 과정을 uGIS기법에 의한 실시간 현장영상의 제공과 현장의 변화관리를 지속가능하게 공중을 나르는 로봇형 공간정보의 한 기술로서 자료의 전송, 보존 및 관리와 운영을 할 수 있다는 새로운 uIT분야의 하일라이트로서 크게 부각되어, 향후에도 무한한 영향력을 발휘할 수 있는 잠재력을 견지할 수 있는 수단으로 기여될 것이다.

• Advances in environmental research
• /
• v.2 no.3
• /
• pp.167-177
• /
• 2013

We investigated that removal of aqueous U(VI) by nano-sized Zero Valent Iron (nZVI) and Fe(II) bearing minerals (controls) in this study. Iron particles showed different U(VI) removal efficiencies (Mackinawite: 99%, green rust: 95%, nZVI: 91%, magnetite: 87%, pyrite: 59%) due to their different PZC (Point of Zero Charge) values and surface areas. In addition, noticeable amount of surface Fe(II) (181 ${\mu}M$) was released from nZVI suspension in 6 h and it increased to 384 ${\mu}M$ in the presence of U(VI) due to ion-exchange of U(VI) with Fe(II) on nZVI surface. Analysis of Laser-Induced Breakdown Detection (LIBD) showed that breakdown probabilities in both filtrates by 20 and 200 nm sizes was almost 24% in nZVI suspension with U(VI), while 1% of the probabilities were observed in nZVI suspension without U(VI). It indicated that Fe(II) colloids in the range under 20 nm were generated during the interaction of U(VI) and nZVI. Our results suggest that Fe(II) colloids generated via ion-exchange process should be carefully concerned during long-term remediation site contaminated by U(VI) because U could be transported to remote area through the adsorption on Fe(II) colloids.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.2 no.3
• /
• pp.191-198
• /
• 2007

It needs an Integration Management Center in u-City to mange all events for an efficiency of city function, to enhance an installed infrastructure of information, and to provide u-Service like residence, administration, and culture in real time. Integration Management Center is a place to provide a city information from gathering data of communication network, traffic network, and facilities. The u-Services in Integration Management Center need an Integrated Platform to integrate verticality and horizontality between service layer. This paper study an infrastructure of Integration Operation Center and Integrated Platform. Lastly the topics are suggested how to make it a success in u-City.

• Speech Sciences
• /
• v.6
• /
• pp.33-44
• /
• 1999

This paper aims to analyze whether the phenomenon of /u/$\rightarrow$/i/ is a hypercorrection or not in the North Korean dialects. Most North Koreans pronounce /i/(gold) as /kum/ because the vowel /i/ merges into the peripheral vowel space of /u/ in their dialects. The merger of back vowel is one of most distinctive characters in North Korean dialects. But some speakers pronounce /chubann/(exile) as /chiban/. This time /u/ in peripheral space moves to /i/ in central vowel space. It seems that the vowels /i/ and /u/ exchange places with each other when they uttered in North Korean. Though it was observed that the vowel movement of /i/$\rightarrow$/u/ was caused by the merger of back vowels, the reason why vowel /u/ moves in the opposite direction, that is, the central space of vowel /i/ has not been analyzed yet. This experiment starts with hypothesis that the movement of /u/$\rightarrow$/i/ might be caused by hypercorrection. The first step of this research is to analyze /u/$\rightarrow$/i/ pronunciation of North Koreans. The second step is to compare the results of North Korean pronunciation with those of South Korean pronunciation and observe whether tendency of /u/$\rightarrow$/i/pronunciation can also be found in the standard Seoul dialect and other South Korean dialects.

• Journal of Korean Society for Geospatial Information Science
• /
• v.17 no.2
• /
• pp.113-121
• /
• 2009

This research is for analyzing current situations related to u-City world market preoccupation and to suggest effective national strategies based on the analyzing result. It is predicted that u-City world market will grow fast and it is time to prepare effective strategies for u-City world market preoccupation. Therefore, this research reviewed current policies related to u-City world market, conducted a SWOT analysis based on reviewing results, and suggested four different strategies like followings: (1) grasping continuous current situations, (2) connection within/between internal and international network, (3) international development cooperation, and (4) core technology development. This research is conducted based on literature reviews and consultation with experts. And the research result can be used for the u-City comprehensive plan.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.34 no.10B
• /
• pp.988-993
• /
• 2009

In recent years, the development of ubiquitous computing technology as vital information anytime, anywhere to monitor and manage the demand for U-healthcare services is increasing. Accordingly, remote blood sugar management, remote blood pressure management, and research on U-healthcare service have been very active. But, the existing U-healthcare service monitoring devices and services has been implemented in different operating platforms and programing languages which are provided by diverse application service providers. For this reason, the users have difficulty in receiving diverse U-healthcare services. In this paper, SOA-based U-healthcare monitoring system has been designed and implemented. Through implementation, it is confirmed that the proposed SOA based U-healthcare monitoring system can increase the reuse of each service component to make it easier to reconstruct the structure of the new services.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.26 no.6
• /
• pp.571-581
• /
• 2008

With the advent of u-City(ubiquitous city) concept, the importance of urban management has been increased. GIS is a foundation for the efficient urban management and an essential technology for the development of u-City. u-City, which aims for convenient, safe, healthy, and comfortable life, provides diverse services based on advanced information technologies, and it will offer more services in the future. u-City integrated management platform enables the ease of service development, guarantees the quality of services for the resident, and provides organic information sharing. Moreover, the platform by integrating GIS and other common management functions, makes possible efficient urban management. In this paper, required functions of u-City integrated management platform for u-City service were analyzed. As a result, GIS module for management of street lights and supervision of fire was developed and the application usability of u-City integrated management platform was verified by service simulation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.11
• /
• pp.5506-5511
• /
• 2012

u-Wellness is widely applicable to individuals and medical service providers such as hospitals and it includes u-fitness and video health counselling services at the side of the provider and stress management, obesity management, and the amount of exercise at the side of the individual. In this paper, we design and implement a smart health care system which uses the authentication device to identify an individual and the user's smart phone. Our system records and manages the amount of exercise on the basis of the prescription of health care professionals through the exercise equipment and Wi-Fi communication. Therefore, our system helps user do optimized amount of exercise through the health care professional's prescription. And our system quantifies the results of the measurement of body fat measuring machines and experts to build the database and automatically schedule.