• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.9B
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• pp.1057-1065
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• 2011

In order to achieve the ease of development and to facilitate the maintenance of codes for complex Ajax (Asynchronous Java Script and XML)-based web clients, this paper proposes a CVC (Communicator-View-Controller) architecture pattern by modifying the well-known MVC (Model-View-Controller) framework. By composing the Communicator of codes for asynchronous data retrieval, which is common to Ajax-based clients, the proposed architecture pattern is able to cut out the graphic design related codes to constitute the View layer. Based on such declarative generalization of complex web-client codes, Ajax-related codes can be easily modularized and efficiently reused in development and maintenance stages, and graphics design can be done separately regardless of the other business logic related codes development, resulting in highly efficient development and maintenance of complex Ajax-based web clients.

• Journal of the Korean Data and Information Science Society
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• v.14 no.4
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• pp.1083-1090
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• 2003

Web-based learning is currently an active area of research and a considerable number of studies have been conducted on its application in the learning environment. However, in spite of many advances in the research and development of the educational contents, questions about how the environment affects learning remains largely unanswered. In this article, we propose a Web-based learning environment to improve the educational effect. The goal of this article is not to provide a complete system to support Web-based learning but rather to describe some meaningful strategies and fundamental design concepts that utilize information technologies to support teaching and learning.

• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.1
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• pp.123-129
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• 2007

On the Semantic Web, the content of the documents must be explicitly represented through metadata in order to enable contents-based inference. In this study, we propose a mechanism to convert the Conceptual Graph (CG) into Resource Description Framework (RDF). Quite a large number or representation languages for representing knowledge on the Web have been established over the last decade. Most of these researches are focused on design of independent knowledge description. On the Semantic Web, however, a knowledge conversion mechanism will be needed to exchange the knowledge used in independent devices. In this study, the CG could give an entire conceptual view of knowledge and RDF can represent that knowledge on the Semantic Web. Then the CG-based object oriented PROLOG could support the natural inference based on that knowledge. Therefore, our proposed knowledge conversion mechanism will be used in the designing of Semantic Web-based knowledge representation and inference systems.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.27 no.4
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• pp.179-186
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• 2004

The purpose of this study is to implement web-based quality cost management system to measure the performance of quality improvement activities in the business firms. Developed WQCMS(Web-based Q-Cost Management System) have ability to collect and analyze quality data generated from various different departments in the inside or outside of the enterprise without any limitations, if end-users are able to access wide area network. It provides the capability to integrate quality information from database and to generate various easy analysis reports to management's needs using built-in analysis tool modules with real-time. The proposed system was developed using Microsoft's .Net technology, ASP.NET and MS-SQL Server 2000. By web-enabling Q-cost management system, the effectiveness of the system management and utilization was realized by easiness of information integration and economical efficiency.

• Journal of the Korea Computer Industry Society
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• v.2 no.8
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• pp.1099-1108
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• 2001

In this paper, we proposed an efficient method of management in which various design objects in the environments for distributed software development. Those design objects are created in the environments for distributed software development based on Unified Modeling Language as well as versions of source codes. In this research, a version control technique has been specially focused that is based on our proposed version rules to consistently control versions from web-based distributed software development which enables developers to independently manage distributed objects from the software development platform. Based on the version control technique, we have designed a web-based rule-control version management model that has been proposed here.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.639-640
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• 2006

Many companies in mechanical engineering fields have accumulated information of design and manufacturing. The Enterprise Resource Planning (ERP) and Product Data Management (PDM) systems help information gathering and data managing. However, these systems are not flexible to support suitable functionality for specific product because these systems deal with entire enterprise resources. To cope with this issue, a web-based design support system was constructed for the design process of automotive steel pulley. This system provided 1) search service for part design with key word and clustering map, and 2) estimation service of maximum stress. These services reduced design time by reducing iterative jobs with Computer Aided Design (CAD) and Computer Aided Engineering (CAE) for stress analysis, and by enhancing search for existing data of steel pulley.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.620-622
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• 1998

Web 기반 시스템 구축시 저렴한 구축비용, 표준화된 문서환경, 클라이언트를 통일하지 않고도 어플리케이션의 구현이 가능한 장점 때문에 인터넷 프로토콜인 TCP/IP와 HTTP를 기반으로 시스템을 구축하려는 기업과 조직이 늘고 있다. 본 논문에서는 web 환경에서 시스템 구축시 적용할 수 잇는 web 기반 시스템 분석/설계 모형을 제안한다. 기존의 web 어플리케이션 개발 방법들이 데이터 분석에 기초를 둔 것과는 달리, 기업과 조직이 가지는 기능을 중심으로 web 어플리케이션을 분석하고, 파악된 기능에서 pageflow를 설계하여 사용자의 요구사항과 조직의 처리가 반영된 page와 네비게이션 경로(navigation path)를 설계할 수 있는 모형을 제시한다.

• Proceedings of the Korea Multimedia Society Conference
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• 1998.04a
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• pp.339-343
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• 1998

본 연구에서는 Web 환경에서 분산객체 기술인 CORBA(Common Object Request Broker Architecture)를 이용하여 Java Applet으로 구현되는 의료영상회의 시스템의 Web Client를 설계 구현하였다. 플랫폼(platform)에 독립적이고, 다양한 개발 언어를 지원하는 CORBA를 기반으로 한 이 의료영상회의 시스템은 시스템의 개발, 확장성 및 유지 보수 측면에서 아주 뛰어나다. 또한 객체 지향언어이면서 다양한 플랫폼에 구애를 받지 않는(Architecture Neutral) Java 언어를 이용하여 Web 환경에서 쉽게 실행 가능한 Applet으로 의료영상회의를 할 수 있는 Web Client를 설계 구현하였으므로 Web 브라우저를 이용할 수 있는 환경이라면 손쉽게 이용할 수 있는 장점을 가진다.

• Proceedings of the IEEK Conference
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• 2003.07a
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• pp.161-164
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• 2003

The sharing of caches among Web proxies is an important technique to reduce Web Traffic and alleviate network bottlenecks. Additionally, due to emerging network technologies cooperative Web caching among proxies shows great promise to become an effective approach for reducing Web document access latencies. Nevertheless it is not widely deployed due to the overhead of existing protocols such as ICP. We propose iSCSI-based hierarchical web caching scheme which provides more improved performance than existing web caching scheme.

• Journal of Digital Contents Society
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• v.1 no.1
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• pp.111-124
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• 2000

The coursewares available on the web are on active development by each country all over the world in accordance with web prevailing. Many Visual Basic language courseware is also into web-based education it is not improving the effect of learning. Hence through this study, in orer to be out of the said kind of approach, 1)by adding multimedia elements with making the best of web characteristics, 2)escalating the studying effect of learners' with experimental environment, and 3)providing proper feedbacks in assessment of learners' reactions 4)we invented web-based multimedia courseware with the technology of Real Encoder, Real Player, Active X etc. and tried adapting it to school education field on the basis of design model of professor-learning system.