Development and Evaluation of a Information System using the Internet to Support Satellite Education

本研究的目的是开发和评估利用互联网支持卫星教育的信息系统。以下是本研究的成果。(1)基于Internet的讲师幻灯片模式传送系统和反馈系统的开发该系统可以通过网络或Internet将讲师展示的幻灯片模式传送到学习者的网络浏览器。幻灯片模式与讲座同步发送。通过这个功能，学习者可以比卫星发送的电视屏幕更清楚地阅读幻灯片模式。除此之外，该系统还可以通过互联网收集学习者对队列的实时响应。此外，讲师能够在网络浏览器上显示结果的图表。(2)教育信息通知系统的开发该系统的用户可以收到新的教育信息通知邮件，这与用户注册的关键字有关。该系统于2002年9月在国家教育资源信息中心（NICER）发布并使用。此外，该系统还具有检测网页更新是否值得用户使用的功能。(3)基于视频的学习资料信息检索系统的开发在该系统中，视频资料通过与人工转录的语音数据进行匹配进行时间编码。利用时间编码语音数据，开发了基于视频的学习资料信息检索系统。该系统提供全文检索，并重播检索到的视频片段，其中包含查询条件。

The aim of this research involves a development and evaluation of information system using the Internet to support satellite education. The followings are the achievements of this research.(1)Development of a System to Deliver Slide Patterns of Lecturer and a Feedback System Using the InternetThis system can deliver slide patterns shown by lecturer to a learners' web browser via a network or the Internet. A slide pattern is sent in sync with a lecture. By this function, learners can read slide patterns more clearly than a TV screen sent by satellite. In addition to this, this system can gather learners' real-time response for an enquete via the Internet. Furthermore, a lecturer is able to show a graph of result on a web browser.(2)Development of Notification System for Educational InformationUsers of this system can receive e-mail for notification of new educational information, which has relations with keywords that users have registered. This system has been released and used since September 2002 in the National Information Center for Educational Resources (NICER). Furthermore, this system have a function to detect whether an web page update is worth for users.(3)Development of an Information Retrieval System for Video-Based Learning MaterialsIn this system, video material is time coded by matching with manually transcribed speech data. Using time coded speech data, an information retrieval system of video-based learning materials was developed. This system offers a full-text retrieval, and replays retrieved video clips in which query terms are contained.