• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.500-503
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• 2003

XML been using extensively by standard of data exchanging in the Internet is observed by a technology to replace existent document creation language of HTML etc. Biggest characteristic of this XML is that logic information and physical information that express style of document that do that express structural substance of document were detached. Hereupon, W3C advised XSL that oner style function of form similar to HTML for XML's style and data conversion. Also, XSL's conversion function offers function that change XML document to other data format, and can describe style information through conversion of various document format. But, a XML document conversion technology that use XSLT know-how in domestic is unprepared real condition, and necessity about solution that can edit XSLT document efficiently is putting. This paper does XML document so that conversion and output are available in various document format. And offered research of XSLT document editing system that can edit and create XSLT document efficiently under WYSIWYG environment.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.04a
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• pp.514-517
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• 2014

HTML5 는 웹 문서를 작성하기 위한 HTML(Hyper Text Markup Language)의 차세대 웹 표준 이다. HTML5 는 아직 개발 중에 있으며 2014 년 하반기에 최종표준이 발표 될 것으로 전망 된다. HTML5 는 이전 버전의 HTML 과 호환성을 유지하면서 개발자에게 동영상, 위치정보, 소켓통신 및 다양한 미디어 서비스 을 별도의 플러그인 없이 HTML5 의 확장된 표준 태그로 Dynamic 한 기능을 구현할 수 있게 한다. 그러나 HTML5 에 새롭게 추가된 일부 표준 태그 에서 웹 어플리케이션(Web application) 서비스의 데이터 보안 취약점이 발견되었다. 본 논문에서는 HTML5 로 웹 어플리케이션 소프트웨어 개발 과정에서 발견된 표준 태그 및 API 보안 취약점을 분석하고 공격대상이 되는 소스코드 의 취약점을 개선 하였다. 보안에 취약한 소스코드 취약점을 개선하여 외부 공격자의 위협으로 부터 보안 취약점을 예방 할 수 있는 대응방법을 제안한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.4
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• pp.798-803
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• 2004

XML(extensible Markup Language) of W3C(World Wide Web Consortium) that is used the standard core technology of data exchange on the current Internet is an independent data type of usable at the all platforms. Especially, it can handle rapidly because of the integration of each other data types that is exchanged. Between each application and system that built at an enterprise in the past. However, W3C had notice to use XSLT(extensible Stylesheet Language Transformation) that is document transformable standard to descript expression information in XML documents because documents of XML only have a logical structure information. It is designed for XML that is developed for data exchange on the internet. Moreover, it is proposed to process and to change as other data type for expression XML documents for user. This thesis design and implement XSLT document editing system transformable as a un data type as a HTML data type applying XSLT at XML and developed the system. It can edit XSLT document that descript expression information in XML document that is used for data editing in the WYSIWYG environment.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.212-216
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• 2004

XML(extensible Markup Language) of W3C(World Wide Web Consortium) that is used the standard core technology of data exchange on the current Internet is an independent data type of usable at the all platforms. Especially, it can handle rapidly because of the integration of each other data types that is exchanged. Between each application and system that built at an enterprise in the past. However, W3C had notice to use XSLT(extensible Stylesheet Language Transformation) that is document transformable standard to descript expression information in XML documents because documents of XML only have a logical structure information. It is designed for XML that is developed for data exchange on the internet. Moreover, it is proposed to process and to change as other data type for expression XML documents for user. Tris thesis design and implement XSLT document editing system transformable as a HTML data type applying XSLT at XML and developed the system. It can edit XSLT document that descript expression information in XML document that is used for data editing in the WYSIWYG environment.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.5
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• pp.150-164
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• 2013

Currently it is being gradually focused on the mobile application's processing performance implemented by Javascript and HTML (Hyper Text Markup Language) due to the dissemination of mobile web application supply based on the WAC (Wholesale Application Community). If the application software has a simple functional processing structure, then the problem is benign, however, the load of a browser is getting heavier as the amount of Javascript processing is being increased. There is a limitation on the processing time and capacity of the Javascript in the ordinary mobile browsers which are on the market now. In order to solve those problems, the Web Worker that is not supported from the existing Javascript technology is now provided by the HTML 5 to implement the multi thread. The Web Worker provides a mechanism that process a part from the single thread through a separate one. However, it can not guarantee the computing ability as a native application on the mobile and is not enough as a solution for improving the fundamental processing speed. The Cyclostorm overcomes the limitation of resources as a mobile client and guarantees the performance as a native application by providing high computing service and ascripting the Javascript process on the mobile to the computer server on the cloud. From the performance evaluation experiment, the Cyclostorm shows a maximally 6 times faster computing speed than in the existing mobile browser's Javascript and 3 to 6 times faster than in Web Worker of the HTML 5. In addition, the usage of memory is measured less than the existing method since the server's memory has been used. In this paper, the Cyclostorm is introduced as one of the mobile cloud computing services to conquer the limitation of the WAC based mobile browsers and to improve the existing web application's performances.

• Journal of Korea Multimedia Society
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• v.11 no.7
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• pp.1007-1015
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• 2008

In order to provide real-time data from sensors and instruments at manufacturing processes on web, we proposed a communication service model based on XML(eXtensible Markup Language). HTML(Hyper Text Markup Language) is inadequate for describing real-time data from manufacturing plants while it is suitable for display of non-real-time multimedia data on web. For applying XML-based web service of process data in Intranet environment, real-time performance of communication services was evaluated to provide the system design criteria. XML schema for the data presentation was proposed and its communication performance was evaluated by simulation in terms of transmission delay due to increased message length and processing delay for transformation of raw data into defined format. For transformation of raw data into XML format, we proposed two structures: one is the scheme where transformation is done at an SCC(Supervisory Control Computer) after receiving real-time data from instruments. the other is the scheme where transformation is carried out at instruments before the data are transmitted to the SCC. Performances of two structures were evaluated on a testbed under various conditions such as six packet sizes and offered loads of 20%, 50% and 80%, respectively. Test results show that proposed schemes are applicable to the systems in Ethernet 100BaseT network if total message traffic is less than 7 Mbps.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.394-396
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• 2001

인터넷 상에서의 다양한 멀티미디어 응용 및 정보 서비스의 요구가 급증하게 되고, 이에 따른 효율적인 운영 및 서비스에 대한 표준 기술의 개발 또한 활발히 진행되게 되었다. 이에 1998년 W3C(World Wide Web Consortium)에서 웹 기반 동기화 된 멀티미디어 통합 언어인 SMIL이 제안되었다. 선언적 마크업 언어인 XML(eXtended Markup Language)에 기반을 둔 SMIL은 웹 상에서의 멀티미디어 프리젠테이션을 위한 다양한 기능들을 제공하지만, SMIL 또한 HTML(HyperText Language)과 같은 태그 기반 마크업 언어이므로 각 태그의 사용법을 숙지하여 텍스트 편집기를 이용한 비효율적인 저작에 치중되어 있었다. 이에 SMIL 응용업무에서의 효율적 활용을 위한 SMIL 전용 저작도구의 필요성이 대두되었고, 국내외에서의 활발한 연구 개발이 진행되고 있다. 본 논문에서는 UML(Unified Modeling Language) 표기법에 기반 한 객체지향 모델링 툴을 사용하여 체계적인 소프트웨어 설계에 따른 SMIL 저작도구를 구현하였다. 템플릿 기능의 지원으로 효율적이고 편리한 SMIL 컨텐츠 생성을 위하여 인턴넷 망(network)의 대역폭에 따른 저작이 가능하도록 구현되었으며, 미리 보기 기능을 활용한 멀티미디어 데이터의 직관적이 운영을 지원하도록 구현하였다.

• Proceedings of the IEEK Conference
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• 2000.07b
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• pp.699-702
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• 2000

The Internet has become widely used in many countries. In particular, a new emerging technology, the WWW (World Wide Web), which has become a major application of the Internet, has been rapidly developed. As a result, there are hundreds of millions of URLs (Uniform Resource Locators) on the WWW, and the total number of URLs is still explosively increasing. To get information from the WWW, we generally use Internet search engines. However, we cannot always get the actual information we want. Accordingly, we have solved this problem by constructing a prototype system based on agents by programming language Java for constructing a more effective search engine. This so-called “intelligent agent system on WWW” deletes redundant HTML (Hyper Text Markup Language) files and exchanges information about the existence of URLs. And we found that our prototype system is more powerful and effective than conventional search engines.

• Journal of Institute of Control, Robotics and Systems
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• v.14 no.2
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• pp.184-190
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• 2008

This paper describes a message model based on XML (eXtensible Markup Language) to present real-time data from sensors and instruments at manufacturing processes for web service. HTML (Hyper Text Markup Language) is inadequate for describing real-time data from process control plants while it is suitable for displaying non-real-time multimedia data on web. For XML-based web service of process data, XML format for the data presentation was proposed after investigating data of various instruments at steel-making plants. Considering transmission delay inevitably caused from increased message length and processing delay from transformation of raw data into defined format, which was critical for operation of a real-time system, its performance was evaluated by simulation. In the simulation, we assumed two implementation models for conducting the transformation function. In one model, transformation was done at an SCC (Supervisory Control Computer) after receiving real-time data from instruments. In the other model, transformation had been carried out at instruments before the data were transmitted to the SCC. Various tests had been conducted under different conditions of offered loads and data lengths and their results were described.

• Journal of KIISE:Information Networking
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• v.28 no.1
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• pp.126-135
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• 2001

HTTP 프로토콜은 WWW에서 HTML(HyperText Markup Language)문서를 송수신하기 위해 사용하고 있는 애플리케이션 프로토콜로서 TCP를 수송계층 프로토콜로 이용하여 이루어지는 애플리케이션 계층 프로토콜 가운데 하나이다[12]. HTTP/1.0은 동일한 서버로부터 각각의 개체에 대하여 개별적인 TCP연결은 생성하기 때문에 다중의 요구를 비효율적으로 처리한다. 이러한 문제를 해결하기 위한 방안으로 제안된 HTTP/1.1은 TCP연결을 지속적인 연결(Persistent connection)이라는 개념을 도입하여 하나의 TCP 연결 상에서 다중의 요구(Request)를 처리하도록 하고 있다[9]. 네트워크가 발전됨에 따라 사용자가 늘어나고 다양해지면서 서비스의 차별화 문제가 중요한 문제로 대두되었다.[3.5] 본논문에서 제시하는 Diff-HTTP은 웹 서버에 서비스를 요청한 클라이언트들에게 차별화 된 서비스를 제공하기 위해서 사용자를 두 등급 기본등급과 우선 순위를 고려한 상위 등급으로 구분한다. 각 등급은 제한시간으로 차별화되고 상위 등급에 속한 클라이언트에게 제한된 시간을 증가 시켜 지연을 최소로 함으로써 고품질의 서비스를 제공하는 방안을 제시한다.