• International Journal of Fuzzy Logic and Intelligent Systems
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• v.7 no.2
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• pp.91-95
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• 2007

Main goal of web recommendation system is to study how user behavior on a website can be predicted by analyzing web log data which contain the visited web pages. Many researches of the web recommendation system have been studied. To construct web recommendation system, web mining is needed. Especially, web usage analysis of web mining is a tool for recommendation model. In this paper, we propose web recommendation system using grid based support vector machines for improvement of web recommendation system. To verify the performance of our system, we make experiments using the data set from our web server.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.762-766
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• 2004

This paper introduces a testbed which is suitable for the study of security issues arising in applications involving internet appliances. The testbed implements secure door locks by utilizing the intranet in the building and is composed of two main parts, namely a database server and door locks each of which equipped with a custom-made embedded system. The main objective is to provide a platform for teaching the conflict among real-time specifications, security requirements, and limited-resource constraints. After definitions of threat, vulnerability, and attack are given, we discuss how the testbed can be applied as an education tool for these concepts. Finally, the effects of sequential and multitasking operations are given as a case study.

• The Journal of Information Technology and Database
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• v.1 no.1
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• pp.107-121
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• 1994

클라이언트-서버 응용 개발용 도구는 처리하는 형태에 따라 스크린 에뮬레이션 형태, 그래픽 클라이언트-서버 형태, 그리고 분산 트랜잭션 처리 기능을 보유하고 있는 트랜잭션형 클라이언트-서버형태 등이 있다. 본 논문에서는 이들 중에서 관계형 데이타베이스 서버에 용이하게 접근할 수 있는 그래픽 클라이언트-서버 형태를 지닌 데이타베이스 서버용 클라이언트 도구(일명 한마당)를 제안하였다. 한마당은 분산 처리 환경하에서 다매체를 이용한 클라이언트-서버 형태의 응용 프로그램을 생성하는 4GL 형태의 CASE 도구이다.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.1
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• pp.169-179
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• 2010

iA-Canvas is HMI program which is the industrial automation application developed based on the Java language, and can run on any OS such as Windows, UNIX, Linux. The iA-Canvas is built on object-oriented open structure and consider network functionality and user experience as a system of centralized management and distributed management. iA-Canvas is composed of several components such as Builder, IO Server, Viewer, and Web Service Module and provides a GUI control environment. This paper explains design and implementation of iA-Canvas that is a tool for development of integrated management system, and shows practical examples of integrated management system that use iA-Canvas.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.2
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• pp.100-107
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• 2004

The development of a Web-based powertrain performance simulation system is introduced. The development approach of system architecture and each module is introduced along with the H/W and S/W used. The interface with all users is developed via a JAVA Applet. The powertrain modeling and other job history data of a user is managed systematically on the server by database to increase the reusability of the data. A self-developed program using object-oriented programming is used as a solver for the performance simulation. The graph tool for the analysis of simulation results has the collaboration support developed based on JAVA so that synchronous users can view the same result. As a result, the powertrain simulation is possible only with Web-browser for the user and the collaboration support among the relevant engineers is possible.

• IE interfaces
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• v.12 no.4
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• pp.567-574
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• 1999

The use of POP(Point of Production) systems which help to report the realtime production information to the supervisor class and to send commands to the shop floor is increasing gradually. Future companies will need to break the limit of regions and to exchange information among remote-sited departments and companies located abroad. In order to achieve this goal, Internet which is growing remarkably nowadays will be the best tool. In this research, a prototype of the POP system based on Internet is developed using the Java language. The developed POP system can monitor production status by collecting information from shop floor through a web server and can control production equipments from remote sites.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.145-147
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• 2002

본 논문에서는 네트워크 통신으로 생성된 데이터를 분석하여 서버의 부하를 예측함으로 서버의 성능을 향상시킬 수 있는 모너터링 툴을 설계하였다. 현재 리눅스에서 제공되는 서버 부하 정보는 시스템의 총괄적인 정보에 국한하고 있다. 본 논문에서 제한하는 새로운 부하 정보는 per-connection에 관한 것이다. 서버가 per-connection에 대한 정보를 알 수 있다면 각각의 클라이언트에 대한 정보를 알 수 있어 차별적인 서비스를 제공하는 것과 함께 모든 클라이언트에 대한 균등한 대역폭을 보장할 수 있다. 그래서 본 논문은 기존의 모니터링 툴이 제공하지 않는 Per-connection의 데이터를 얻어 분석을 할 수 있는 CoreMon이라는 툴을 설계하였다.

• IE interfaces
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• v.10 no.2
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• pp.79-90
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• 1997

Documents in a traditional PDM(Product Data Management) system have been managed in a form of scanned document files or electronic documents developed by specific tools. Though each tool manages documents with its own systematical methods, it has drawbacks in data search, data integration and interchange, etc. For this reason, in this research we propose an efficient document management system for PDM by using the SGML(Standard Generalized Markup Language), one of CALS and ISO standards for document interchanges. Among documents to be managed in PDM, the engineering change notification (ECN) is taken into account. The DTD (Document Type Definition) has been constucted based on the logical analysis of the documents format, In addition, based on the DTD, DB classes have been designed by object-oriented paradigms and a prototype for document input/output and search has been developed using UniSQL ORDBMS (Object-Relational DBMS) and PowerBuilder under the client/server environment.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.15 no.5
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• pp.37-43
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• 2006

The target of this study is development of web based mold discrimination system by matching vision information with CAD database. The use of 2D vision image makes possible speedy mold discrimination from many databases. The image processing such as preprocessing, cleaning is done for obtaining vivid image with object information. The web-based system is a program which runs to exchange messages between a server and a client by making of ActiveX control and the result of mold discrimination is shown on web-browser. For effective feature classification and extraction, signature method is used to make sensible information from 2D data. As a result, the possibility of proposed system is shown as matching feature information from vision image with CAD database samples.

• Proceedings of the KOSOMBE Conference
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• v.1997 no.05
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• pp.171-175
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• 1997

We have developed a remote diagnosis system using the LAN and MODEM which enables a routine check for a patient remotely. We used $LabVIEW^{TM}$ as the programing development tool and DAQ (Data Aquisition) board from National Instrument for data aquisition. The LAN card and MODEM are used for the transmission of patient's data. A patient data are aquired by DAQ board and signal processing is done by $LabVIEW^{TM}$, which is a graphical prgamming language. Two methods for the data of transmission. One is the Client-Server model using TCP/IP (Transmission Control Protocol / Internet Address) in the LAN (Local Area Network) Another is using MODEM to transmit the measured data from a patient. In this case, the data transmission is accomplished by the FTP (File Transfer Protocol).