During the last two years, Purdue University's Computer Graphics Technology department has been developing an open-architecture distance learning system capable of both synchronous and asynchronous instructional delivery. The system strives to provide the ability to deliver any instructional content, to any learner, under any condition through the integration of intelligent modules that dynamically determine the most appropriate mode of presentation for any particular learner. This paper details the development of a module for Purdue's Unified Multimedia Delivery System capable of intelligently identifying and delivering asynchronous video content to users on traditional PC's or PDA's over a wireless environment. This provides the system with the capability to deliver traditional video-based instructional and supportive documentation such as schematics, illustration, and animation to students outside of the confines of their traditional classroom or laboratory. While many commercial solutions address the delivery of training materials using Internet technology, a commercial turnkey solution for delivering streaming video content over a wireless IP network does not currently exist in the distance learning market. Technologically, the system is built around Microsoft's Active Server Pages and Windows Media Services. ASP s used to implement the logic and WMS provides the video streaming capabilities. The system also addresses on-site video delivery through the integration of a intelligent mechanism capable of identifying users accessing the module from wireless PDA's and delivering alternate content through IEEE 802.11b Wireless LAN. Additionally, the system utilizes path-finding methodology and artificial intelligence algorithms to intelligently select the delivered instructional, user-specific content.
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机译：在过去的两年中，美国普渡大学的计算机图形图像技术部门一直在开发能够同步和异步教学交付的开放式架构远程教育系统。该系统致力于通过提供智能化的模块，动态地确定演示文稿的最合适的模式对于任何特定学习者的融合，提供任何教学内容，任何学习者，在任何条件下的能力。本文详细介绍了普渡大学的统一多媒体传输系统能够智能识别并通过无线环境异步传送视频内容对传统PC的或PDA的用户模块的开发。这提供了有能力的系统，提供传统的基于视频的指导和支持文档，如图表，插图和动画的学生其传统的教室或实验室的范围之外。虽然许多商业解决方案利用互联网技术解决培训物料的输送，对通过无线IP网络提供流媒体视频内容的商业交钥匙解决方案，当前不存在的远程教育市场。从技术上讲，该系统是围绕微软的Active Server Pages和Windows媒体服务构建。 ASP小号用来实现逻辑和WMS提供视频流的能力。该系统还地址现场通过能够识别用户访问来自无线PDA的模块，并通过IEEE 802.11b无线局域网提供替代内容的智能机制的整合视频递送。此外，该系统利用寻路方法和人工智能算法来智能地选择交付指导，用户固有的内容。
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