Hsu, K. C., & Yang, F.-C. O. (2008). Toward an Open and Interoperable e-Learning Portal: OEPortal. Educational Technology & Society, 11 (2), 131-148.


Toward an Open and Interoperable e-Learning Portal: OEPortal

Kevin Chihcheng Hsu

Department of Information Management, National Central University, Taiwan // khsu@mgt.ncu.edu.tw

 

Fang-Chuan Ou Yang

Department of Information Management, National Central University, Taiwan // Department of Information Management, Ching Yun University, Taiwan // ouyang@cyu.edu.tw

 

ABSTRACT: With the rapid advance of stand-alone e-learning systems, we believe a sharable and interoperable portal platform capable of integrating various existing learning systems is critical for the future development of e-learning systems. We highlight two problems as the root causes for current ineffective sharing of learning resources: learning object interoperability and learning activity interoperability. In this paper, we propose an open and interoperable e-learning portal architecture to solve these problems: 1) With regard to learning object interoperability, we propose WSRP+ service as an enhancement to WSRP standard to send presentation content and intercept crucial information from LMSs in order to facilitate the presentation-level integration of learning objects and keep the learnerís learning status in our e-learning portal. 2) With regard to learning activity interoperability, BPEL4WS is used for the task-based orchestration of course workflows among shared learning systems, in which value-added tasks such as grading, evaluation, recording, etc., can also be integrated as a whole. At the end of this paper, we present our prototype implementation to illustrate the feasibility of our approach.

Keywords: E-learning, WSRP (web service for remote portlets), BPEL4WS (business process execution language for web services), Workflow orchestration

[1348 Kb]