• Proceedings of the Korea Database Society Conference
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• 2000.11a
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• pp.216-223
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• 2000

본 연구에서는 외부와 유무선 접속기능을 갖는 무인창구 자동화기기(CD, ATM, 통장정리기, 발권기, 무인자동발급기, 지하철 게이트 등)를 인터넷망에 접속하여 기기의 장애/ 이력 관련정보를 Server의 데이터 베이스에 저장하고, 인터넷에 접속되어 있는 A/S 센터에서 필요한 정보를 쉽고 효율적으로 검색, 운용할 수 있는 시스템을 구현하는 방법을 제시한다.

• Journal of Industrial Convergence
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• v.21 no.1
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• pp.67-76
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• 2023

COVID-19, which occurred in 2019, has a strong contagious power, has serious symptoms of infection and after-effects, and death in severe cases depending on the underlying disease and symptoms. As COVID-19 is highly contagious, in Korea, screening clinics have been set up across the country to determine whether or not to be positive for COVID-19 and isolate the infected to prevent the spread of COVID-19. However, there are cases where COVID-19 test applicants flock to screening clinics and cannot receive tests due to longer waiting times, and there is a risk that secondary infections may occur in the atmosphere. In this study, the reservation and notification system can be applied from the existing screening care system to solve spatial constraints, reducing waiting time with screening appointments, and solving population bottlenecks to screening clinics. Taking the COVID-19 pandemic as an experience, we propose a system that can present directions in future pandemic situations. To process real-time data, we use Google's Firebase to use Realtime Database in the cloud environment. Because a real-time database is used, users can check the status of screening clinics in real time through the app, make reservations, and receive notifications about test reservations.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.516-519
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• 2006

In this paper, we designed data monitoring system using RFID for efficient data management of cinder reuse process, and for construction of unified system utilizing exact data. We constructed database, thesarus retrieval model to manage this database, and designed RFID model for monitoring system. The construction of data monitoring system for stable cinder reuse is the efficient method to develop realtime and automatic process.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.18 no.1
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• pp.41-49
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• 2000

This study was performed to establish PC-based Urban Infrastructure Information System(UIIS) using GPS and TotalStation as an alternative to UNIX-based UIIS. After carryig out this study, the following conclusions were derived: PC-based UIIS costs less time and money than UNIX-based UIIS. The coordinates of the control point of the site were obtained using DGPS, then based on this point, locational data were obtained using RTK GPS and TotalStation in the site with realtime data capture to enhance the accuracy of locational data. And image data were also entered into database together with the text data. So, the multimedia database is possible in UIIS.

• Journal of Information Technology Services
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• v.7 no.2
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• pp.181-195
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• 2008

The rapid growth of mobile communication technology has provided the expansion of mobile internet services, particularly mobile realtime transaction takes much weight among mobile fields. There is an increasing demand for various mobile applications to process transactions in a mobile computing fields. Thus, During transmission in wireless networks a base station failure inevitably causes data loss of the base station buffer. It is required to compensate the loss for communication. The existing methods for a base station failure are not adequate because they all suffer from too much overhead and resolve only the link failure. In this paper, we study an efficient recovry systems for a mobile DBMS. We propose SLL (Segment Log List) that enables the mobile host to compensate data loss efficiently in the case of base station failure. In SLL, a base station deliveries an output information of data cells to a mobile host. when a base station fails, the mobile host can retransmit just next data cells. We also prove the efficiency of new method.

• Proceedings of the Korea Database Society Conference
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• 2000.11a
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• pp.201-209
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• 2000

기존의 리눅스 운영체제에서는 임의적 접근제어(DAC)에 의해서 자원의 접근을 통제하며, 이 때의 접근제어 정보를 로그 파일을 통한 정적인 감사 추적에 의존하고 있다. 따라서 본 논문에서는 DAC와 함께 강제적 접근통제(MAC) 기법을 구현하여 커널 수준에서 자원을 안전하고 강제적으로 통제할 수 있는 다중등급보안(MLS) 시스템을 설계, 구현하였으며, 동적이며 실시간으로 감사 정보를 수집, 분석, 추적할 수 있도록 데이터베이스 연동을 통한 감사 추적 시스템을 설계하고 구현하였다. 데이터베이스 연동을 통한 실시간 감사 추적 시스템은 보안 관리자로 하여금 불법적 침입 및 자료의 유출에 대하여 실시간으로 대처할 수 있도록 한다. 본 논문에서는 이러한 리눅스 실시간 감사 추적 시스템을 설계하고 구현한 내용을 소개한다.

• Korean Institute of Interior Design Journal
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• no.18
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• pp.9-15
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• 1999

Computers and internet have the potential to radically development. But, computer is a just tool by itself. This study is control implement in a way that exploits the capacity of network of processors to execute many tasks concurrently in architectural desigv. The collaboration design system constituted integrated CAD (computer-aided design) system at the base of standardization database environment network and world wide web (WWW). Collaboration design management system is composed of Project Management, Part Management, Process Management , and Appraisement system. They can provide frameworks for effective coordination and management of design work in accordance with the Collaboration Design Support System operating rule accommodatingly. architectural data can be collaboration design environment accessible through a web browser and located at a server. whenever their work investigated each others. Throughout process, the database acted as an individual design and it made them available in realtime. And they can have quick overview of the work. That way a continuous evaluation of best design was distinctly and highly. In the future, New architectural design methods are collaboration environment could result in productivity and quality.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1571-1576
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• 2005

DCS has many processing components and various communication elements. And its communication delay characteristic is affected diverse operating situation and context. Especially, binding signal which traversed from one control-node to another control-node undergo all sort of delay conditions. So its delay value has large deviation with the lapse of time, and the measurement of delay statistics during long time is very difficult by using general oscilloscope or other normal instruments. This thesis introduces the design and implementation of PC-based BDAS(Binding Delay Analysis System) System developed to overcomes these hardships. The system has signal-generator, IO-card, data-acquisition module, delay-calculation and analyzer module, those are implemented on industrial standard PC/Ethernet hardware and Windows/Linux platforms. This system can detect accurate whole-system-wide delay time including io, control processing and network delay, in the resolution of msec unit, and can analyze each channel's delay-historic data which is maintained by realtime database. So, this system has strong points of open system architecture, for example, user-friendly environment, low cost, high compatibility, simplicity of maintenance and high extension ability. Of all things, the measuring capability of long-time delay-statistics obtained through historic-DB make the system more valuable and useful, which function is essential to analyze accurate delay performance of DCS system. Using this system, the verification of delay performance of DCS for nuclear power plants is succeeded in KNICS(Korea Nuclear Instrumentation & Control System) projects

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.483-487
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• 2006

In this paper implemented that PDA sends finger images and can finger recognition web service system in realtime. Finger recognition web service system received the finger images and return the recognition result as XML style. because of this it can offer the same service to using wireless PDA as well as using wire internet client. This system consist of mobile client and finger recognition web service provider. Mobile client request finger recognition web service provider using DIME with taken finger image. We can easily receive and see the result of finger recognition without mass finger database in limited storage space of PDA. Finger recognition web service provider offers that receiving finger images and calling finger recognition system after the recognition return the result.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.12
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• pp.1244-1248
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• 2010

The previous study of Digital Broadcasting Recommendation system is based on user explicit profiling information. But user profile is always changing and the exact extraction of user profile is very important in recommendation system like Digital TV using many user interactions. This paper is studied of realtime user profiles aggregation through user remote controller input and matching this profiles with contents meta-data like contents genre information, event information, content viewing time. It is not used commercial database system and network communication solution considering embedded system hardware restriction. And it is considered people want different content genre based on watching time. From the results of this paper, there are improvement of user satisfaction of contents recommendation.