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Session 2558

A Method for Delivering Dynamic Hyperlinked Streaming Instructional Content Over a Wireless Environment Through the Use of Active Server Pages and XML Technology

Carlos R. Morales Purdue University

Abstract

There is a tremendous need for delivering video based instruction and supportive documentation in the form of schematics, illustration, and animation to students outside of the confines of their traditional classroom or laboratory environment. Many solutions address the delivery of training materials using Internet technology, but currently, there is no commercial turn-key solution for delivering streaming video content over a wireless IP network. This paper details a method for implementing a system capable of delivering full-screen, full-motion streaming video as well as hyperlinked context sensitive illustrations and schematics to learners over an 11-megabit wireless network. The net result is a system that can serve as an instructional reference to learners while they are engaged in active on-site problem-solving activities. The benefits to the instructor and to the learner are many. It lessens the need for the learner to recall all of the information presented to him, because the materials will be available on-demand for reference at a later time. This minimizes mistakes. It also centralizes instructional and supportive materials into a single system that can be easily updated to reflect changes. Any changes in procedures are immediately reflected in the system and available to learners. Because materials are delivered over the web, the method can be used for distance training.

The author uses traditional video techniques in combination with dynamic web development techniques to develop and deploy dynamic streaming content. Windows Media Encoder is used to create streaming video files of instructional events. The files are edited and indexed by subject and by logical segments within each file. This allows learners to not only look for a video file on a specific subject or procedure, but also for a specific step or sequence within a video file. Descriptions of the files are logged and indexed using an SQL based database and put on the web using Microsoft Internet Information Server. Active Server Pages and XML are used to query the files from the server and present the information to the learner. Supplemental illustrations are constructed using video compositing techniques and encoded to MPEG-4 for delivery. Learners access the materials using a customized web page on a laptop at their point of work. IEEE 802.11 cards are used carry the requested video from the server to worker’s laptop. The net result is a system capable of administrating instructional materials to the learners in an extremely dynamic environment.

I. Introduction

“Proceedings of the 2001 American Society for Engineering Education Annual Conference & Exposition Copyright ? 2001, American Society for Engineering Education”

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Morales, C. (2001, June), A Method For Delivering Dynamic Hyperlinked Streaming Instructional Content Over A Wireless Environment Through The Use Of Active Server Pages And Xml Technology Paper presented at 2001 Annual Conference, Albuquerque, New Mexico. 10.18260/1-2--9555