• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.5B
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• pp.824-832
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• 2010

In construction structure management, the effects of investigation by the professional manager is dependent on the cost, the inspection periods and methods. Therefore, effective and automated maintenance system for the target structure is required. Although some bridge monitoring systems are operating using wire based networks, the performance is not good enough to show sufficient ability as integrated bridge management system. In this paper, we design and implement an integrated bridge management system based on sensor networks. Two expert modules for bridge management and the integrated system management are provided. Moreover, web-based monitoring system is also designed for users at anywhere. The results show that the system is effective and readily available.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.390-392
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• 2005

우리나라의 배전자동화 시스템은 현장에 설치된 배전자동화 개폐기부터 중앙제어실의 주장치까지 거의 모든 일체를 순수 국내기술에 의해 개발하여 사용하고 있다. 그러나 주장치 중 종합배전자동화시스템의 핵심프로그램인 미들웨어가 국산화되지 않아 성능향상시에 다소 걸림돌이 되곤 했다. 미들웨어란 종합배전자동화시스템에 이용되는 프로그램으로 전 세계적으로 개발된 곳이 몇 곳 없으며, 사용 용도는 수많은 배전자동화기기에서 취득된 데이터를 실시간으로 처리하는 역할을 담당하고 있다. 그런데 최근에 미들웨어가 국산화되어 시범운영을 한 결과 그 안정성과 우수성을 확인할 수 있었다. 따라서 명실상부한 배전자동화시스템 전체를 국내기술에 의해 개발을 완료하는 쾌거를 이루어 냄으로서 우리나라는 세계에서 배전자동화분야 기술수준의 우위를 확보 할 수 있는 기반을 마련하게 되었다. 특히 배전자동화분야가 아닌 실시간 데이터를 처리하는 여러 분야에도 활용될 수 있기 때문에 타 산업에 미치는 영향도 클것으로 판단되어 국가발전에도 기여하는 기회가 되기를 기대해 본다.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.8
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• pp.803-807
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• 2008

The ubiquitous middleware configurated an aggregation of the various services. The services are made in different languages and the various services that are dynamically changing environment are carried out in collaboration service. The ubiquitous system that services in the these environment is required appropriate response to real-time system and reliability. In this paper, we suggest the monitoring agent that a monitoring system added or removed the services in real-time is made continuous monitoring in run-time environment and guaranteed performance and reliability of a application by maximally reducing overhead that combined with applications is occurred. The suggested scheme shows the demonstration to fit the scenario situation and verifies function and performance of monitoring about the service applications through the experiment.

• Journal of the Korea Society of Computer and Information
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• v.15 no.10
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• pp.173-182
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• 2010

Recently, the society confronts unpredictable disasters and the aspects varies in diverse ways. As a pessimistic perception on the social safety starts emerging, the UT utilized actional system for disaster is viewed as a solution. Therefore, in this paper, I provided UT applied forecast prototype which is a portion of u-Gov's application services. Also, as one of UT applied policy subject, I distinguished and analyzed the differences between e-Gov and u-Gov and, finally, suggested u-Gov's reform in order to surpass e-Gov's limitation and amelioration for possible problems during prototype materialization.

• Convergence Security Journal
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• v.5 no.3
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• pp.15-22
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• 2005

The spread of Internet and the appear of Downsizing, SI(System Integration) is chaning centralized computing to distributed computing. Also distributed computing is rapidly changing to Ubiquitous computing escape from hard wire connected network. CORBA(Common Object Request Broker Architecture) is a middleware that used for smoothness communication between application program and operation system in a different environment. However distributed computing environment is not safe from the danger, the attack like virus, worm is too intellectual and variety. In this paper, we design a new DB security model and suggest efficiency of it in Ubiquitous environment base on CSS(CORBA Security Service) that present ed from OMG(Object Management Group).

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.4
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• pp.7-15
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• 2010

Recently, there are many home network applications using the convergence between mobile platforms and home network system. As smart phones which are called small PC in the hand becoming popular, the development of home network application beyond the one of cellular phones is required. Android mobile platform of Google includes OS, middleware and primary applications. Also, in addition to smart phones, it can be mounted on various devices such as set-top box and household appliances. In this paper, home network services on smart phones of Android platform are designed and implemented. The services provide real-time monitoring information (temperature, humidity, real-time video) of rooms and appliance control in a house.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.131-137
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• 2014

Service Oriented Architecture(SOA) is a flexible structure which does not affect other services even when a specific service is changed. It provides the platform with neutral interfaces independent of any others, where services are loosely coupled in a standard way. While ESB (Enterprise Service Bus) is a key technology for service-oriented architecture, few research and development for ESB has been done. In this paper, we designed and implemented the key components of ESB such as mediation service, message oriented middleware service, operation service, monitoring service, application connection service, and database connection service. The performance evaluation was done by measuring the message processing time for the number of messages with various sizes.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.362-364
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• 2011

To build ubiquitous agriculture environment successfully, development of core technology for agriculture, such as sensor node H/W, sensor node middleware platform, routing protocol and agricultural environment application service is essential. With the application of u-IT technologies to traditional agriculture area, fusion complex technologies become a source to raise value-added agriculture product and its productivity. However, it is imperative to expand horticulture industry area and improve infrastructure for utility-based horticulture. This paper proposes an agriculture product growth environment management system that utilizes environmental factor monitoring sensors and biological information sensors in greenhouse to specifically manage botany growth environment management.

• The Transactions of the Korea Information Processing Society
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• v.5 no.7
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• pp.1847-1854
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• 1998

최근, 웹(World Wide Web) 환경에서 효율적인 인터넷 서비스를 위해서 정적 서비스보다는 동적 서비스에 대한 다양한 요구사항들을 만족시키고자 많은 연구자들의 노력이 시도되고 있다. 웹 상에 있는 서버들로부터 정보를 얻기 위하여, CGI는 분산 응용들 간의 상호연동의 한 방법으로 제안되었다. 이 방ㅂ버에서 서버는 서비스 객체들간의 정적 바인딩 인한 과중한 처리 부담 및 네트워크 트래픽 부하를 극복할 수 없는 문제점들을 가지고 있다. 이러한 이유에서 본 논문에서는 기존의 CGI를 사용하는 대신에 확장된 객체 지향형 미들웨어를 사용하므로 웹 상에서 분산자원을 효율적으로 지원할 수 있도록 한다. 목표 시스템을 웹 상에서 구현하였다. 여기에서 클라이언트 모듈들은 임의의 서버에게 정보를 요청하기 위한 CORBA 미들웨어 접속용으로 서버 모듈은 클라이언트의 요청을 CORBA/JAVA 미들웨어를 통해 받아 웹 서버내의 멀티미디어 정보를 검색하도록 각각 구현되었다.

• The KIPS Transactions:PartD
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• v.11D no.4
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• pp.765-774
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• 2004

In order to integrate heterogeneous biological information sources, it is necessary to define the view that represents unified viewpoint for the multiple sources by hiding heterogeneity of the data. We present an XML-based view definition model and show Its operating principles in designing the middleware system to integrate biological information sources. This model supports the user-defined XML view to increase flexibility in constructing the integration system and execute integrated queries on higher level ion. Based on the view-definition model, we present a wrapping model for relational database systems and web resources as well as an application program.