Ubiquitous Learning on Pocket SCORM.
ABSTRACT With advanced technologies, computer devices have become smaller and powerful. As a result, many people enjoy ubiquitous learning
using mobile devices such as Pocket PCs. Pocket PCs are easy to carry and use as a distance learning platform. In this paper,
we focus on the issues of transferring the current PC based Sharable Content Object Reference Model (SCORM) to Pocket PC based.
We will also introduce the Pocket SCORM Run-Time Environment (RTE) which has been developed in our lab. Pocket SCORM architecture
is able to operate, even when the mobile device is off-line. It will keep the students’ learning record. When it is on line,
the records will then be sent back to Learning Management System (LMS). With memory limitation, we provides course caching
algorithm to exchange the course content on the Pocket SCORM.
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ABSTRACT: With respect to the diverseness of learning devices and the different conditions of the internet connection availability, users might confront with some inevitable problems in traditional distance learning environment. The learning activities are always interfered while the network connection is failed. Furthermore, the learning contents become more and more miscellaneous with on-line multimedia presentations, and it is necessary for learners to wait for the learning resources to be downloaded from the remote learning server. In this paper, we propose a solution, called Caching Strategy, to solve those issues under the ubiquitous learning scope. According to some specific factors, we aim to provide the most needed learning resources for learners on the mobile learning devices even if the internet connection is not available intermittently. With our proposed methods, the waiting time of learning contents delivery can be reduced as well to smooth the learning activities online. In order to increase the efficiency of the strategy, we carefully examine some specific factors about the learning sequencing defined in the Sharable Content Object Reference Model (SCORM). After applying this strategy to distance learning system, the efficient ubiquitous learning will be easier to come true.Autonomic and Trusted Computing, Third International Conference, ATC 2006, Wuhan, China, September 3-6, 2006, Proceedings; 01/2006
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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.World Wide Web 09/2008; 11:387-406. DOI:10.1007/s11280-008-0044-2 · 1.62 Impact Factor