• 제어로봇시스템학회논문지
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• 제7권3호
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• pp.255-262
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• 2001

According to the advancement of web related technologies, many works on robots using these technologies, called web-based robots enables sharing of expensive equipments as well as control of remote robots. But none of the existing methods about web-based robots in-clude robot simulators in their web browser, which transfer appropriate information of a remote place to the local users. In this paper, a web-based robot simulator is proposed and developed to control a remote robot by using the web. The proposed simulator can transfer the 3D information about the remote robot to the local users by using 3D graphics, which has not been previously developed. Also, it sends the camera image of a remote place to the local users so that the users can use this camera image as well as 3D information in order to control the remote robot.

• 한국IT서비스학회지
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• 제8권4호
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• pp.87-101
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• 2009

The current information system audit merely inspects a web based information system by focusing on checking items that are extracted from structured and information engineering model and object-oriented component model. As a result, the checking item of web contents and design is inadequate. This paper aims to extract audit framework in order to strengthen the audit of web contents and design during the development of the web based information system and to suggest checking items based on audit framework. For this, the web development process and web site evaluation model were studied, compared, and analyzed with the current information system development audit. From a result of the survey, it was found that the adequacy of the suggested audit framework and audit checking items is above the average value. It is believed that the suggested audit framework is helpful for the audit of web based information system.

• Educational Technology International
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• 제6권2호
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• pp.131-151
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• 2005

As student-centered learning grows, formative peer assessment practices have been universally used in various fields. According to the review of traditional peer assessment practices, the formative peer assessment has five common stages: planning, assessing (giving feedback), receiving feedback, reflection, and revising. As the each stage of traditional formative peer assessment has some weaknesses, the study discusses solutions that are recommended for dealing with the problems by introducing the potential benefits of web-based peer assessment. Then, desirable future trends of web-based peer assessment are suggested. The author hopes that understanding the potential benefits of web-based formative peer assessment will promote the proper use of peer assessment and render positive effect on student learning.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.45-48
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• 2008

Since the mid-2000, so-called Web 2.0 paradigm was emerged and has been widely extended to actual Web markets with supporting Web technologies. Among Web 2.0 services, mashups with Open APIs is regarded as one of core technologies. Web mapping is also the most dominant mashup application in Open API-based applications, so that various mashups with Google Map API and other Open APIs are developing. In this paper, current technological status is explained with web GIS file formats of KML. While, a prototype is web-based GIS layer authoring system for general users, without any kinds of GIS tools and external spatial databases. This mashup application will be used web-based feature extraction for geo-spatial web for public users.

• 한국IT서비스학회지
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• 제13권1호
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• pp.147-159
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• 2014

Recently, the quantity of information that is accessible from the Internet is being dramatically increased. Searching the Web for useful information has therefore become increasingly difficult. Thus, much research has been done on web robots which perform internet information filtering based on user interest. If a web site which users want to visit is found, its content is searched by following the searching list or Web sites links in order. This search process takes a long time according as the number of page or site increases so that its performance need to be improved. In order to minimize unnecessary search with web robots, this paper proposes an efficient information collection system based on compare and merge method. In the proposed system, a web robot initially collects information from web sites which users register. From the next visit to the web sites, the web robot compares what it collected with what the web sites have currently. If they are different, the web robot updates what it collected. Only updated web page information is classified according to subject and provided to users so that users can access the updated information quickly.

• 정보처리학회논문지C
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• 제11C권4호
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• pp.545-554
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• 2004

WebDAV(Web-based Distributed Authoring and Versioning, RFC 2518)는 인터넷을 통하여 원거리에 위치한 다수의 작업자들 간의 협업을 지원하기 위한 프로토콜이다. 웹데브(WebDAV)는 웹 통신 프로토콜인 HTTP/1.1의 확장으로 인터넷을 통하여 다양한 콘텐츠의 비동기적인 협업을 지원하기 위한 프로토콜을 제공한다. 웹 기반의 협업지원 시스템이나 문서관리 시스템과 같은 기존의 응용 시스템에서 웹데브 기능을 제공 하기 위해서는 이러한 시스템들이 웹데브의 메서드(method)와 헤더(header) 정보를 다루는 추가적인 구현이 필요하다. 본 논문에서는 웹데브 명세를 지원하는 아파치 기반의 DAVinci(WebDAV Is New Collaborative web-authoring Innovation) 웹데브 서버를 개발하였다. 공개 소프트웨어 기반인 아파치(Apache) 웹 서버에는 웹데브를 지원하기 위한 mod_dav 모듈을 제공하고 있다. DAVinci는 mod_dav 모듈의 서비스 제공자 형태로 추가되어 웹데브의 자원과 속성 관리를 담당한다. 본 시스템은 자원을 파일 시스템에 저장하고 속성 정보를 PostgreSQL 데이터베이스로 관리하며 추가적으로 자원과 속성들 간에 비일관성이 발생하지 않도록 보장하는 일관성 관리자(consistency manager)를 제공한다.

• 한국지능시스템학회논문지
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• 제13권3호
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• pp.366-370
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• 2003

In this research, we suggest a hybrid intelligent Web recommendation systems based on Web data mining and case-based reasoning (CBR). One of the important research topics in the field of Internet business is blending artificial intelligence (AI) techniques with knowledge discovering in database (KDD) or data mining (DM). Data mining is used as an efficient mechanism in reasoning for association knowledge between goods and customers＇ preference. In the field of data mining, the features, called attributes, are often selected primary for mining the association knowledge between related products. Therefore, most of researches, in the arena of Web data mining, used association rules extraction mechanism. However, association rules extraction mechanism has a potential limitation in flexibility of reasoning. If there are some goods, which were not retrieved by association rules-based reasoning, we can＇t present more information to customer. To overcome this limitation case, we combined CBR with Web data mining. CBR is one of the AI techniques and used in problems for which it is difficult to solve with logical (association) rules. A Web-log data gathered in real-world Web shopping mall was given to illustrate the quality of the proposed hybrid recommendation mechanism. This Web shopping mall deals with remote-controlled plastic models such as remote-controlled car, yacht, airplane, and helicopter. The experimental results showed that our hybrid recommendation mechanism could reflect both association knowledge and implicit human knowledge extracted from cases in Web databases.

• 한국CDE학회논문집
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• 제7권3호
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• pp.177-189
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• 2002

For the development of automobile lighting components, various designers, developers and manufacturing personnel are involved, each group needing different software tools. In this Smartlite project, several software tools were developed far product development of the lighting components and then tested using two different user interfaces (UIs); the first was based on a commercial CAD system (SDRCI-DEAS) and the second was based on a web browser. The specific focus of this study was a comparison between the new web-based UIs, and the UIs on commercial CAD systems. The usability data have been collected from the users at Visteon and showed that the web-based UIs provided comparable functionality with the CAD-based UIs in terms of performance and usefulness. For the criteria of accessibility, the web-based tools out-performed the CAD-based tools.

• 정보처리학회논문지C
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• 제12C권7호
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• pp.1057-1066
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• 2005

WebDAV(Web-based Distributed Authoring and Versioning)는 웹 기반의 분산 저작과 버전관리를 지원하는 프로토콜로서 인터넷을 통하여 다양한 콘텐츠의 비동기적인 협업을 지원하는 표준 하부구조를 제공한다. WebDAV의 속성 관리는 자원의 주요 정보를 속성으로 설정하여 관리할 수 있는 기능이며, 이들 중 사용자 속성은 사용자 측에서 자유롭게 정의되고 관리될 수 있다는 특징이 있다. 이러한 사용자 속성의 자유로운 설정 기능은 협업시스템과 같은 웍 기반의 응용 시스템을 WebDAV 기반으로 개발하는데 매우 유용하다. 그러나 기존의 WebDAV 속성 관리 기능만으로는 다양한 응용 시스템 개발에 한계가 있다. 본 논문에서는 WebDAV의 사용자 속성 관리를 효율적으로 지원하기 위하여 기존의 WebDAV를 확장한 DavUP(WebDAV User property design Protocol) 프로토콜과 이의 활용에 대하여 기술한다. DavUP은 응용 시스템의 컬렉션 구조와 자원의 속성구조에 대한 정의를 제공하고 있으며, 이를 처리하기 위하여 WebDAV 프로토콜에 새로운 헤더를 추가하고 관련된 WebDAV 메소드의 정의를 확장하였다. DavUP 프로토콜의 실제적인 활용을 위하여 자체 개발한 DAVinci WebDAV 서버가 DavUP 프로토콜을 지원하도록 확장하였으며, 확장된 DAVinci 서버를 이용하여 사용자에게 효과적인 자료 공유 및 교환 기능을 제공하는 일반적인 공개작업장을 실험적으로 개발하여 DavUP프로토콜의 유용성을 검증하였다.

• 한국학교수학회논문집
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• 제11권3호
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• pp.439-466
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• 2008

본 논문은 Web을 기반으로 하는 수학의 학습모형을 설계하고 학습 자료를 개발하여 정규 교과학습에 투입했을 때의 효과를 측정함으로서 Web 상에서 구현될 수 있는 대체 수업방안을 모색하는데 그 목적이 있다. 본 연구는 Web을 이용한 교육 자료 개발에 대한 이론적 토대, 교수-학습 모형의 설계와 구성, 정규 수업을 통한 실험 등 세부분으로 이루어져 있다. 먼저, 학습 이론과 학습자 중심의 교수 모형의 개발, 자료 설계 및 구축 과정, 수업 전략 등 Web 기반 교육의 핵심 원리를 살펴본다. 다음, Web 상에서 수학교육과 학습을 구현하기 위한 학습 프로그램을 개발하여 웹 사이트를 통해 학습을 수행하는 수학의 대체 학습모형을 제시한다. 마지막으로, 평면 2차 곡선을 주제로 수업모형을 설계하여 제작하고 이를 실제 수업에 투입했을 때의 학습효과를 전통적인 수업과 비교 측정함으로서 Web 상에서 이루어지는 학습모형을 구성하는데 있어 필요한 요소 및 발전 방향을 함께 모색한다.