• Journal of Korea Multimedia Society
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• v.10 no.12
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• pp.1679-1686
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• 2007

In this paper, we introduce the sharable and reusable learning objects which are suitable for XML Web services in e-learning systems. These objects are extracted from the principles of pedagogical paradigms for reusable learning units. We call them LIO (Learning Item Object) objects. Existing models, such as Web-hosted and ASP-oriented service model, are difficult to cooperate and integrate among the different kinds of e-learning systems. So we developed the LIO objects that are suitable for XML Web services. The reusable units that are extracted from pedagogical paradigms are tutorial item, resource, case example, simulation, problems, test, discovery and discussion. And these units correspond to the LIO objects in our learning object model. As a result, the proposed model is that learner and instruction designer should increase the power of understanding about learning contents that are based on pedagogical paradigms. By using XML Web services, this guarantees the integration and interoperation of the different kinds of e-learning systems in distributed environments and so educational organizations can expect the cost reduction in constructing e-learning systems.

• Journal of Korea Multimedia Society
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• v.7 no.8
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• pp.1131-1144
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• 2004

In this paper, we investigate a problem with an e-learning system for e-business environments and introduce the solving method of the problem. To be more accurate, existing Web-hosted and ASP (Application Service Provider)-oriented service model is difficult to cooperate and integrate among the different kinds of systems. So we have produced sharable and reusable learning object, they have extracted a principle from pedagogical designs for units of reuse. We call LIO (Learning Item Object). This modeling makes use of a constructing for XML Web Services. So to speak, units of reuse from pedagogical designs are test tutorial, resource, case example, simulation, problem, test, discovery and discussion and then map introduction, fact, try, quiz, test, link-more, tell-more LIO learning object. These typed LIOs are stored in metadata along with the information for a content location. Each one of LIOs is designed with components and exposed in an interface for XML Web services. These services are module applications, which are used a standard SOAP (Simple Object Access Protocol) and locate any computer over Internet and publish, find and bind to services. This guarantees the interoperation and integration of the different kinds of systems. As a result, the problem of e-learning systems for e-business environments was resolved and then the power of understanding about learning objects based on pedagogical design was increased for learner and instruction designers. And organizations of education hope for particular decreased costs in constructing e-learning systems.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11b
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• pp.697-700
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• 2003

메타데이터는 데이터의 데이터로서 컨텐츠 모델을 구성하는 각 요소들의 속성을 기술하는 방법으로 컨텐츠에 대한 정보를 제공한다. 이러한 메타데이터는 컨텐츠를 더 쉽게 이용하거나 검색할 수 있도록 인덱스화된 레이블로 기술되는데, 정확하게 기술하기 위해 메타데이터 요소가 정밀하여야 한다. 본 논문에서는 다른 시스템들 간에 재사용 가능한 LIO 학습 객체 모델의 메타데이터를 e-learning 시스템의 메타데이터 표준화 기술인 LOM 을 기반으로 가상교육 시스템에서 필수적인 메타 데이터를 생성, 갱신, 저장하는 도구를 설계 및 개발하고 분산 컴퓨팅 환경에서 효과적으로 활용하도록 XML 문서로 바인딩 하였다.