research-article

An Adaptive Caching Strategy for m-Learning Based on SCORM Sequencing and Navigation

Authors:

Hsuan Pu Chang,

Timothy K. Shih,

Chun-Chia Wang,

Louis R. ChaoAuthors Info & Claims

World Wide Web, Volume 11, Issue 3

Pages 387 - 406

https://doi.org/10.1007/s11280-008-0044-2

Published: 01 September 2008 Publication History

Abstract

One of the main problems encountered in the usage of mobile devices as a learning platform is the presence of an impermanent network environment due to insufficient coverage or link failure in wireless communication. On the other hand, a persistent connection is usually offered by cellular phones using a telecommunication protocol, but with a relatively weak computing power and very limited network bandwidth which makes m-learning a time-consuming process. Moreover, learning contents are currently composed of various multimedia resources that induce long latency to display on handheld devices such as smartphones with GPRS. Recently, a lot of m-learning systems and contents have conformed to the Sharable Content Object Reference Model (SCORM) since it was introduced by ADL in the late 90s. The Sequencing and Navigation (S&N) specification is an important part of SCORM. S&N is defined to prescribe the intended student learning sequence by instructors. In this paper, we propose an adaptive course caching strategy based on the S&N specification in an m-learning environment. The system automatically switches to the corresponding course caching strategies, namely, the virtual memory management (VMM) mode and caching on disk (COD) mode, according to the current networking capability. The proposed mechanism is implemented on an m-learning system—Pocket SCORM—which received the 2005 Brandon Hall Excellence in Learning Award in the USA. Our simulation and experiments demonstrate that the proposed course caching strategy ultimately reduces the latency during the learning process and decreases the requests for Internet reconnection.

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Cited By

Zhang SLuo XXuan JChen XXu W(2014)Discovering small-world in association link networks for association learningWorld Wide Web10.1007/s11280-012-0171-717:2(229-254)Online publication date: 1-Mar-2014
https://dl.acm.org/doi/10.1007/s11280-012-0171-7
Yen NMa JHuang RJin QShih T(2010)Shift to Cyber-IProceedings of the 2010 IEEE/ACM Int'l Conference on Green Computing and Communications & Int'l Conference on Cyber, Physical and Social Computing10.1109/GreenCom-CPSCom.2010.68(685-690)Online publication date: 18-Dec-2010
https://dl.acm.org/doi/10.1109/GreenCom-CPSCom.2010.68

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An Adaptive Caching Strategy for m-Learning Based on SCORM Sequencing and Navigation

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Published In

cover image World Wide Web

World Wide Web Volume 11, Issue 3

Sep 2008

91 pages

ISSN:1386-145X

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© Springer Science+Business Media, LLC 2008.

Publisher

Kluwer Academic Publishers

United States

Publication History

Published: 01 September 2008

Accepted: 28 February 2008

Revision received: 18 January 2008

Received: 03 September 2007

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Cited By

Zhang SLuo XXuan JChen XXu W(2014)Discovering small-world in association link networks for association learningWorld Wide Web10.1007/s11280-012-0171-717:2(229-254)Online publication date: 1-Mar-2014
https://dl.acm.org/doi/10.1007/s11280-012-0171-7
Yen NMa JHuang RJin QShih T(2010)Shift to Cyber-IProceedings of the 2010 IEEE/ACM Int'l Conference on Green Computing and Communications & Int'l Conference on Cyber, Physical and Social Computing10.1109/GreenCom-CPSCom.2010.68(685-690)Online publication date: 18-Dec-2010
https://dl.acm.org/doi/10.1109/GreenCom-CPSCom.2010.68

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