• Journal of the Korea Society of Computer and Information
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• v.14 no.10
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• pp.189-197
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• 2009

As the web service technology matures. research is focused on the composite web services that combine individual web services within an enterprise or between enterprises. Quality of service is the critical competitiveness factor in this mature technology stage where there are many services with similar functionalities differing only in some non-functional properties. Monitoring is the key component for the service quality management of a web service. A service quality monitoring system design using a broker is presented in this paper. OWL-S is used to specify the composite service process and a service policy (inputs and outputs of each service, quality attributes and values, etc.) built by WS-Policy is applied to the composite service process. If there is any discrepancy between the service policy and the monitored data, the service provider and the user are notified of it so as to take necessary measures. We have implemented a travel reservation system as an example of the presented design and the experimental results are shown. Average response time was monitored and the timeout policy was applied in the experiment.

• The Journal of Society for e-Business Studies
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• v.13 no.2
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• pp.101-115
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• 2008

Recently in the human society, the crime using small arms has increased. Also, many accidents happen because of incomplete management of chemicals and radiation. Accordingly, it is necessary to manage dangerous objects by tracing the position of dangerous objects and rapidly providing the correct information for them. This paper presents a web-based system for real-time monitoring of dangerous objects using RFID in order to overcome the limitations and problems of current dangerous objects management techniques. In this paper, we define the architecture for web-based dangerous objects monitoring system and the scheme for storing information of a dangerous object in the RFID tag. We also implement the web-based monitoring system and present the execution result of the system. The proposed real-time monitoring system is composed of the dangerous objects monitoring server which manages information of dangerous objects and controls them, the dangerous objects monitoring middleware which is mediator between dangerous objects and the server, the RFID reader which reads information of dangerous objects from RFID tags attached to the objects and the database which stores information, status and position of dangerous object. The proposed system manages diverse dangerous objects such as small arms, radiation and harmful chemicals based on the position of them using RFID, so the user can check dangerous objects when they are checked in and checked out and the user can acquire the real-time position information of them through the system. Furthermore, the user can visually monitor dangerous objects through web browser from any where and at any time because the system is web-based system and it provides graphical user interface.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.166-168
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• 2002

인터넷 사용자의 수가 폭발적으로 늘어나고 웹 컨텐츠의 양이 많아지면서 웹 캐시의 수요는 날로 높아져 가고 있다. 동시 접속자의 수가 수천에서 수만에 이르는 대형 웹사이트의 경우, 다수의 웹 캐시를 두어 웹 서버의 부하를 줄이기도 한다. 이러한 웹서비스 환경에서 여러 대의 웹 캐시를 효율적으로 관리하고 모니터링 할 수 있는 관리 시스템이 요구되고 있다. 본 논문에서는 다수의 웹 캐시를 통합 관리하고 모니터링 할 수 있는 웹 기반 통합 관리 시스템을 설계하고 구현해 보았다.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.11b
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• pp.31-34
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• 2002

IDC는 기업 및 개인 고객에게 전산 설비나 네트워크 설비를 유치하여 유지·보수 등의 서비스를 제공하는 곳으로, 서버 장비 및 통신장비의 운영과 관리를 대행하여 서버의 안정성, 보안성과 서버가 제공하는 서비스의 품질을 유지해 주는 시설이다. 하지만 학교나 일부기업에서는 자신들의 고유 서비스를 위해 호스트를 자신들의 NOC(Network Operation Center)에 놓아두게 되고, 그러면 IDC에서 지원하는 다양한 관리 서비스를 제공받지 못한다. 본 논문에서는 웹 기반 IDC 관리형 인터넷 서비스 모니터링 및 관리시스템의 구조를 제안하고 시스템을 구현한다. 웹에서 효과적인 모니터링 및 관리를 위하여 JAVA 기반의 설계를 하였으며, 인터넷 서비스에 대한 효율적인 관리를 위하여 ICMP 프로콜을 사용하였다. 제안된 시스템을 이용하여 원격지의 서버의 상태나 인터넷 서비스의 전반적인 상태를 일정하게 유지하며, 웹을 기반으로 하여 모니터링 및 관리를 할 수 있다. 중요 기능은 데이터의 주기적인 수집과, 수집된 정보를 데이터 베이스에 저장함으로써 네트워크의 상태 변화에 대한 지속적인 관찰이 가능하다. 또한 시스템에 어떤 문제가 발생하였다고 판단될 경우 효율적이고 신속한 대처가 이루어지도록 하기 위하여 관리자에게 보고서를 제출하게 된다.

• Journal of Energy Engineering
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• v.13 no.3
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• pp.199-204
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• 2004

This Paper deals with a Platform for diagnosis monitoring of DC-DC converter system based on Java virtual machine. This platform is designed for estimating diagnostic parameters of DC-DC converter system based on system identification method and displaying Web-page on operating status. For Web-service, hardware of platform is baled on a Strongarm processor and software bale is designed on Linux and java virtual machine.

• Journal of the Korea Society of Computer and Information
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• v.6 no.3
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• pp.64-71
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• 2001

In this paper we propose the network traffic monitoring system that can supported network and system operation, management, expansion, and design using network analysis and diagnosis to a network administrator. The proposed system consists of two parts: analysis server for collection and analysis of the network information. and supports real-time monitoring of network traffic, and client system shows user a graphical data that analyzed a returned result from the server This system implements web-based technology using java and contributes to enhance the effectiveness of network administrator's management.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.4
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• pp.505-512
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• 2002

Fast spreading of web made we get easily the vast amount of information all over the world, but quantity of great information on the Internet space is giving much troubles to recognize change of information that users are interested soon justly. That is, users must connect and examine one by one to relevant site to detect change of web documents that changes from time to time. Therefore, the development of Robot which accomplish Information change monitoring function that sense automatically changed contents and inform to user is required. In this paper, we designed and implemented Web site contents change monitoring system, which notify-automatically the change of Web documents to users through alarm or E-mail if user defines target URL to do monitoring, monitoring condition, monitoring period etc. And we presented the method that structure and classify Web Documents to semantic units using HTML Tag. Also, we introduced the concept of virtual key to manage position of word to watch some change efficiently.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.12
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• pp.2341-2347
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• 2016

In this paper, we implement monitoring system for grain sorting using a high-speed FPGA and embedded LINUX. The proposed system is designed by base on web server and web-based applications while existing system was designed by base on stand-alone mode.The interface the Web server with high speed hardware of FPGA is designed on the implemented monitoring system. The proposed system has the advantages of multi-tasking on Linux web server and real-time high speed on FPGA also. The control logic of a high speed rate line-scan CCD camera, the method of center of gravity, HSL decoding and the interface on the Web server are implemented in FPGA. The implemented monitoring system has the advantage of being able to control the grain monitoring, system failure and recovery remotely by web application. As a result, we can upgrade the performance of sorting quality compared by existing system.

• The Journal of Society for e-Business Studies
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• v.14 no.3
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• pp.1-13
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• 2009

EAI(Enterprise Application Integration) as an infrastructure of application integration had played an important role for many companies to make epochal changes, expense reduction, and new application services. The continuous monitoring and management of data covering whole environment of system operations should be well-supported so that the data consistency and system stability are guaranteed to implement and operate the services effectively. In this paper, the requirements and functions of monitoring system are defined for the stable EAI service. An actual web-based system is designed and implemented. This web-based monitoring system is broadly applicable to general EAI environments.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10c
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• pp.419-421
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• 2000

웹 어플리케이션에서 사용자의 불만이 제기되기 전에 시스템의 상태를 모니터하고 문제를 미리 파악하는 것은 서비스 제공자에게 있어서 매우 중요한 일이다. 시스템의 응답시간 측정은 시스템의 성능 문제가 발생한 부분을 찾는데 도움을 준다. 그러나 지금까지의 응답시간 측정 방법은 트랜잭션의 개념이 없거나, 웹 어플리케이션에서 사용할 수 없었다. 따라서 본 논문은 트랜잭션의 개념을 지니고, 일반 자바 프로그램뿐만 아니라 자바 애플릿에서도 사용 가능한 응답 시간 측정 방법을 제안하였다. 논문에서 설계되고 구현된 웹 어플리케이션 모니터링(Web application monitoring: 이하 WM) API을 어플리케이션에 넣음으로써 시스템은 가용성, 서비스 수준 합의, 용량 계획 등을 위해 관리될 수 있다.