• The KIPS Transactions:PartA
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• v.11A no.2
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• pp.165-174
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• 2004

Because a quantity wireless internet contents is much less than wired internet contents, it exist high necessities that wired internet contents should be converted into wireless internet contents. The conversion server implemented in this paper, automatically recognizes the type of user agents when they request, retrieves source documents on the web site specified by an URL, generates metaXML documents as an intermediate form, and converts them wireless markup documents appropriate for user agents. The conversion server interoperates with the image converter for image conversion and the clipper which is an authoring tool for clipping existing wired internet documents. We performed experiments about capability of the conversion server transcoding static/dynamic web pages specified by an URL. According to performance results on dynamic web pages, the conversion server showed better throughput when a thread pool in the terror maintains 5 threads compared with 1 and 10 threads.

• Journal of the Korea Society of Computer and Information
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• v.11 no.5 s.43
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• pp.127-137
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• 2006

We propose two phase filtering scheme to develop an efficient mechanism for XML databases to control query-based access. An access control environment for XML documents and some techniques to deal with fine-grained authorization priorities and conflict resolution issues are proposed. Despite this, relatively little work has been done to enforce access controls particularly for XML databases in the case of query-based access. The basic idea utilized is that a user query interaction with only necessary access control rules is modified to an alternative form through a query optimization technique, which is guaranteed to have no access violations using tree-aware metadata of XML schemas. The scheme can be applied to any XML database management system and has several advantages such as small execution time overhead, fine-grained controls, and safe and correct query modification. The experimental results clearly demonstrate the efficiency of the approach.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.6
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• pp.1058-1064
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• 2009

According to development of Information Technology and generalization of internet, practical use field of geography information became various. Therefor various Geographic Information System (GIS) constructed to manage geography information efficiently. However, geography information data of various form is depending on graphic authorizing tool of various form being not normalized each other. So, OGC(Open Geospatial Consortium) proposed GML(Geography Markup Language) that describe normalized geography information data that can apply mutually and W3C proposed SVG(Scalable Vector Graphics) of vector base. In this paper creates GML data of XML base for geography information data processing to vector graphic object, and design and implementation of GML document editing and translation system that define code converter that create GML document through created graphic objects and change vector graphic to logic structure of XML base.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.645-648
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• 2009

According to development of Information Technology and generalization of internet, practical use field of geography information became various. Therefor various Geographic Information System (GIS) constructed to manage geography information efficiently. However, geography information data of various form is depending on graphic authorizing tool of various form being not normalized each other. So, OGC (Open Geospatial Consortium) proposed GML (Geography Markup Language) that describe normalized geography information data that can apply mutually and W3C proposed SVG (Scalable Vector Graphics) of vector base. In this paper creates GML data of XML base for geography information data processing to vector graphic object. and design and implementation of GML document editing and translation system that define code converter that create GML document through created graphic objects and change vector graphic to logic structure of XML base.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.2
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• pp.133-145
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• 2003

Web applications based on J2EE($Java^{TM}$ 2 Platform, Enterprise Edition) were occurred for solution to overcome the limitations in time and space that the former applications had. Recently, lots of solutions using frameworks are being suggested to develope applications more quickly and efficiently. In this paper, we propose the template for several processes and types, which should be taken in presentation layer of web applications. This idea was based on the fact that web applications developers can concentrate on their specific tasks with independent manner in layered architecture. This template is XML-typed document that shows information about presentation layer of Web applications, which the user wants to compose. This template is inputted to the code generator. After then, the code generator generates skeleton code in presentation layer automatically after parsing information of XML documents. It means that we can develope Web applications more efficiently, by constructing skeleton code which inherits from hot spot classes of framework. Using this template and code generator, developer can develop Web applications with little practice and also is easy to cooperate with other developers to develop them just in time with distributing the standard development process.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04a
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• pp.565-568
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• 2001

고속 인터넷과 멀티미디어 관련 기술의 발달에 따라 통합 멀티미디어 서비스의 기반 구축이 활발히 진행되고 있으며, 이에 따라 단순 이미지, 텍스트만으로 구성되었던 기존의 웹 서비스 환경은 급격히 변화하고 있다. 그러나, 과거의 정적인 텍스트 위주의 고정된 내용을 표현하는 웹 페이지 저작으로는 멀티미디어에 대한 급격히 증대되는 사용자의 요구를 수용할 수 없게 되었다. 이에 따라 1998년도에 시간에 기반을 둔 멀티미디어 데이터의 통합 및 동기화를 위한 효과적인 프리젠테이션(Presentation)을 기술할 수 있는 SMIL(Synchronized Multimedia Integration Language)이 W3C(World Wide Web Consortium)에 의해 제안되었다. SMIL은 XML(eXended Markup Language)에 기반 한 선언적 마크업(Markup) 언어이며 텍스트 편집기 등으로 쉽게 저작할 수 있으나, 태그(Tag)기반 언어이므로 태그의 사용법을 숙지하여야만 효과적인 멀티미디어 프리젠테이션 제작이 가능하다. 이러한 난점을 극복하기 위해 본 논문에서는 Java를 기반으로 한 SMIL 문서 템플릿 기능과 멀티미디어 소스의 미리 보기 기능을 지원하는 SMIL 저작도구의 설계, 구현에 대하여 서술한다.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.9
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• pp.918-926
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• 2010

A widget is a small application running by the users' favorite services, so they are provided with web contents without explicitly visiting the web site. Although widgets can be easily implemented with Open APIs, only a few web sites provide them because of refactoring the structures of web resource to supply Open APIs to the widget developers. This paper presents an Open API Proxy Server System for widget services. The system consists of two components: an Open API Source Code Generator and an Open API Proxy Server. The Open API Source Code Generator provides a Graphical User Interface (GUI) for users to generate the Open APIs of user's choice and sends the Open API source code generation request to the Open API Proxy Server. The Open API Proxy Server using the HTML Table Processing Library receives the HTML web page from web site and extracts useful information from the target HTML table. The proxy server converts the extracted data into the corresponding XML document which becomes available through the Open API. We verify the operation of the proposed system through experiments with the HTML tables in the example web sites.