• Proceedings of the Korea Multimedia Society Conference
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• 2001.06a
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• pp.407-411
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• 2001

웹 기반 멀티미디어 웹페이지 구축 학습 시스템은 인터넷을 통하여 웹페이지 개발기술을 체계적으로 습득하는 멀티미디어적 교육 시스템으로, 일방적으로 보여주는 것을 탈피하여 상호 작용성을 강조한 학습방식이다. 사용자가 직접 조작할 수 있는 학습 시스템으로 내용의 이해를 쉽도록 설계하였고 기존의 텍스트와 정적 이미지 세시방식에서 더 나아가 실제 학습통영 상을 제작하여 사용자의 습득 능률을 높이도록 하였다.

• Proceedings of the Korea Multimedia Society Conference
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• 2000.11a
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• pp.411-414
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• 2000

멀티미디어와 웹이 발전해감에 따라 많은 교육부분에서 이러한 컴퓨터 분야를 접복하기위해 부단한 노력을 해왔다. 여러 멀티미디어 매체를 동시에 사용하는 경우에는 기존의 HTML로는 동기화를 표현을 할 수 없었기 때문에, 이러한 기능을 제공하는 새로운 Markup Language를 만든 것이 바로 SMIL이다. 본 논문에서는 SMIL을 이용한 멀티미디어 교육환경을 사용자에게는 교육효과의 극대화를 획득할수 있고, 개발자에게는 교육환경의 변화수용속도의 증가를 얻을 수 있도록 설계 및 구현하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.996-999
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• 2010

Business transactional process is usually long running computation which requests services from multiple enterprises. Web Services Transaction specification (WS-TX) defines a protocol, WS-BusinessActivity which is specifically designed for such lengthy interaction and maintains overall consistency through compensation. However timely web services transaction is prone to compensate due to tasks' missing deadline. Therefore, this paper proposes a reservation-based protocol which is used to select providers who can provide resources promptly and deselect ones who may fail. And this selection happens during resource reservation phase and before real commitment. In this way, we achieve the goal of minimizing transactions' compensation. Finally, we design the framework architecture for the proposed protocol that is extended from WS-BusinessActivity.

• The KIPS Transactions:PartA
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• v.11A no.7 s.91
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• pp.469-474
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• 2004

As traffic on the web increases, users are faced with increasing delays. A key performance measure for the web is the speed with which object is served to users. Web caching is the one of the key method that improve performance of Web base system. Also, many studies for efficient management of storing scope on cache are performed actively. An important issue in web caching is how to improve a efficiency of a caching system. For this, efficient web cache management is required. A solution for this is to set up the caching strategy that consider a heterogeneity of Web object. In this paper, We propose a new web caching technique for a performance improvement of a multimedia object process. The proposed method is based on a heterogeneity of Web object, and it increases performance of a caching system by increasing the caching efficiency of a multimedia object. In the experiment, We verified performance improvement of proposed web caching system through performance analysis of a proposed system.

• Journal of Korea Multimedia Society
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• v.5 no.3
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• pp.290-297
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• 2002

The appearance of web technology has accelerated the role of the application of multimedia technology, computer communication technology and multimedia application contents. Recently WBI model which is based on web has been proposed in the part of the new activity model of teaching-teaming. How to learn and evaluate is required to consider individual learner's learning level. And it is recognized that the needs of the efficient and automated education agents in the web-based instruction is increased But many education systems that had been studied recently did not service fluently the courses which learners had been wanting and could not provide the way for the learners to study the learning weakness which is observed in the continuous feedback of the course. In this paper we propose design of multi-module system for course scheduling of learner-oriented using weakness analysis algorithm. First proposed system monitors learner's behaviors constantly, evaluates them, and calculates his accomplishment and weakness. From this weakness the multi-agent prepares the learner a suitable course environment to strengthen his weakness. Then the learner achieves an active and complete teaming from the repeated and suitable course.

• Proceedings of the KIEE Conference
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• 1999.11b
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• pp.216-218
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• 1999

This paper presents an advanced virtual lecture system for power system which is based on web. So far, conventional web-based virtual lecture systems which simply would use hyper-text couldn't use characteristics of multimedia in web. Comparing with printed publication, such conventional virtual lecture systems as only display on monitor couldn't be superior in validity and effectiveness. So, in this paper the proposed virtual lecture system uses web-based multimedia functions, including lecture-note and AOD(Audio on Demand), in order to overcome an individual difference of learning efficiency and suggests simple simulation programs for lecture contents which can be performed directly in on-line.

• Journal of Korea Society of Industrial Information Systems
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• v.6 no.2
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• pp.54-62
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• 2001

In this paper, we proposed multimedia based ExamBank system in web environments. In the proposed system the database was designed based on the object-relation model and the application program was implemented with Java such that independent execution would be possible to guarantee no fault for multi-client in Web environments. We defined the Exam entities as objects, and implemented those inter-relationships as user definition and type. In addition, by mapping the schema object of DBMS and JAVA class, it becomes to possible transferring the object systematically between DHMS and JAVA application server.

• The KIPS Transactions:PartB
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• v.12B no.7 s.103
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• pp.789-794
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• 2005

The multimedia system using computing environment should support the fast access speed on the large scaled high quality data in the functional side. And it can support interaction and adaptiveness on system users. But it is hard to support it all effectively in the existing multimedia systems. In this paper, we design the multi-tier hybrid multimedia system. The proposed system is based on the characteristics of a multimedia medium, and it has the merits of the CD-ROM based method and the web based method. On the experiments, we verified the efficiency of the proposed system.

• Journal of The Korean Association of Information Education
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• v.8 no.4
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• pp.537-545
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• 2004

In spite of the fact that project-based learning has had positive effects on improvement of creation power and expansion of the spirit of inquiry, the project-based learning lesson was difficult to carry out in the classroom. The web overcomes time and space limitations in traditional schools. This study has developed and implemented an online project-based website of children's education, based upon the extensive classroom use of multimedia materials to further students participation and interest in projects of discovery. The developed website shows the entire process used through out the project. This paper presents the project's activities and students' learning, using multimedia and web. This study was conducted in fourth grade of an elementary school for a month. The results of this study suggest that the effects of using the project-based website were improved self-directed learning and generation of new ideas.

• Journal of Science Education
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• v.34 no.1
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• pp.84-92
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• 2010

We analyzed learning materials from web sites of the Ministry of Environments, the Ministry of Land, Transport and Maritime Affairs and Korea Energy Management Corporation to help people to develop and utilize web-based multimedia teaching materials. The contents of web-based multimedia teaching materials for environmental educations were generally concentrated in 304 cases of natural environments (22.1%), 250 cases of environmental contaminations (16.5%) and 187 cases of environmental preservation plans (12.4%). It did not significantly deviate from traditional teaching-learning contents being conducted focusing on environmental pollutions of the past. The types of web-based multimedia teaching materials for environmental educations were 934 cases of teaching plans (61.8%), 156 cases of documentaries (10.3%) and 128 cases of e-text information (8.5%). The web-based multimedia teaching materials by school-levels showed that there were 796 for primary schools (35.3%), 588 for middle schools (26.1%) and 320 for high schools (14.2%). It also showed that environmental education with similar contents were provided even in advanced schools. Therefore, it is believed that there needs development of various types of teaching materials while the fields of environmental education contents are covered with connectivity according to school-levels.