网络课件制作的研究与实现

国内基于计算机网络及多媒体技术的网络教学正处于起步阶段,各种适于网络教学的技术手段也正处在不断探索的过程中,因此,文中力求从技术角度,探讨在网络教学中所运用的技术手段及其具体实现。以《数据结构》网络课件的制作为实例,对网络课件的一般开发流程进行了探讨,并对课件中的教学录像、算法动态演示及自测部分的制作给出了实际的解决办法。     

Personalized curriculum sequencing utilizing modified item response theory for web-based instruction

Curriculum sequencing is an important research issue for Web-based instruction systems because no fixed learning pathway will be appropriate for all learners. Therefore, many researchers focused on developing e-learning systems with personalized learning mechanism to assist on-line Web-based learning and adaptively provide learning pathways. However, although most personalized systems consider learner preferences, interests and browsing behavior in providing personalized curriculum sequencing services, these systems usually neglect to consider whether learner ability and the difficulty level of the recommended courseware are matched to each other or not. Generally, inappropriate courseware leads to learner cognitive overload or disorientation during learning, thus reducing learning effect. Besides, the problem of concept continuity of learning pathways also needs to be considered while implementing personalized curriculum sequencing. Smoother learning pathways increase learning effect, avoiding unnecessarily difficult concepts. This paper presents a prototype of personalized Web-based instruction system (PWIS) based on the proposed modified Item Response Theory (IRT) to perform personalized curriculum sequencing through simultaneously considering courseware difficulty level, learner's ability and the concept continuity of learning pathways during learning. In the proposed modified IRT, the information function is revised to consider the concept continuity of learning pathway as well as considering the difficulty level of courseware and individual learner ability. Experiment results indicate that applying the proposed modified IRT for Web-based learning can construct suitable learning pathway to learners for personalized learning, and help them to learn more effectively.     

Web-based teaching in software engineering

The introduction of the new technologies of computer networks and hypermedia systems in education seems promising. However, only through experimentation can the effectiveness of these technologies be demonstrated. This was the main objective of the EONT project, in the process of which the National Technical University of Athens adapted an introductory course in Software Engineering to a novel enriched instructional delivery mode. The existing course material was supplemented by Web-based courseware, integrated into a Web-based novel networked learning environment. In this article we report on the results of our research and development, concerning this particular course, and discuss the results that were obtained from our evaluation study.     

一种基于多流合一的课件制作系统

课件制作系统是远程教育的重要组成部分，但是现有的主流课件——一流媒体课件存在着诸如容量过大、功能追加困难等一些不足。针对这些问题该文提出了一种基于多流合一的课件制作系统模型。首先介绍系统的制作、播放、点播服务器、点播客户端等功能模块的功能划分；然后详细介绍了多流合一的实现原理、合一后文件的数据结构；最后提出了在多路流同时回放时，如何保持同步的一种控制机制。系统在本校网络学院的实际使用中，取得了令人满意的结果。     

基于Web的标准课件的制作和发布系统

本文介绍了教育资源相关标准，提出了一种基于Web的标准课件的制作和发布系统，论述了该系统的体系结构特点，并简单介绍了其关键技术，该系统已用于开展实际的网络教育，在教育资源共享，课件快速制作与发布等方面取得了较好的效果，具有较高的推广价值。     

中医针灸多媒体网络课件的开发

信息技术的迅猛发展,正在改变人们的工作学习方式和教育方式,为了满足基于网络远程教育的需要。设计高质量的多媒体网络课件变得越来越重要。本文论述了中医针灸多媒体网络课件的系统设计和实现的技巧,旨在探索开发中医多媒体网络课件的思路。     

基于规范的可共享智能型Web课件的制作

提出了一种基于IMS与SCORM远程教育技术规范的可共享智能型Web课件的制作方法。该方法首先将课程的教学内容进行分类，设计出各种类型的学习单元与测试单元；然后依照IMS的内容包装规范、简单顺序规范与SCORM的运行时环境，在一个XML的内容包装清单文件中，以一种可互操作的方式，描述课件内容的组织结构与智能化教学策略。     

Evaluation for distance learning scheme on distributed multiple server system

A distributed multiple server system is designed and implemented with Web-DB based services for distance learning as well as emergency communication. The system has employed multiple servers located in a distributed campus network environment. Each server of the system has multi-core processors. With so-called “server virtualization” technology, some programs are executed in parallel (on the virtual servers) so that such a system can efficiently perform several functions. For example, two or more application services can be performed simultaneously as “cloud services” on the whole system. The system can provide distance learning scheme for educational tool, at the same time it can also support Web-based surveillance facilities for emergency contact. With qualitative and quantitative approach, trial evaluation of system has been performed in some classrooms of distributed campus. And users can obtain some good results from the above evaluation.     

远程教学管理系统的研究与实现

在实际开发基于Web的远程教学管理系统的基础上,介绍该系统的结构、功能和特点,论述了设计开发基于B/S架构的Web远程教学管理系统的方法和技术.远程教学管理系统的开发主要包括两部分内容,一部分是数据库的设计开发,另一部分是前端应用程序的设计开发,基于以上的开发目标,该系统采用了三层体系结构的B/S模式,包括数据库系统、应用服务器和客户浏览器,选用SQL Server2000作为后台数据库,将软件工程相关理论应用于整个系统开发过程中,结合现有的设备条件和具体的实际情况,构建与实现了基于Web的远程教学管理系统.     

HACP协议在远程教育中的应用研究

计算机管理教学(CMI)系统的互操作性是当今远程教育研究的重要领域，实现CMI系统互操作性的关键是CMI系统和CBT课件之间的通信机制，提出了基于HACP协议的CMI／CBT通信模型，并分析了模型的工作原理。该模型已在远程教育实践中得到成功应用，有效地解决了基于Web的远程教育系统中的信息跟踪问题。     

应用GoldWave处理多媒体课件中的音频信息

在教学和学习的过程中,多媒体课件的应用日益增多。数字音频是多媒体课件中不可缺少的一个重要部分。本文主要介绍了GoldWave软件的基本使用,力图利用GoldWave轻松地处理多媒体课件中的音频信息。     

应用GoldWave处理多媒体课件中的音频信息

在教学和学习的过程中,多媒体课件的应用日益增多.数字音频是多媒体课件中不可缺少的一个重要部分.本文主要介绍了GoldWave软件的基本使用,力图利用GoldWave轻松地处理多媒体课件中的音频信息.     

基于HDFS的远程教育课件资源管理

首先介绍了当前远程教育课件资源管理及其存在的不足,分析了HDFS的存储机制和特点及数据安全保护策略,给出了采用HDFS文件系统进行远程课件资源管理的实现方案,并指出将HDFS用于远程课件资源管理的优势。     

基于Linux平台同步教学课件播放工具的设计与实现

首先分析了目前网络教学的发展趋势以及使用国产Linux操作系统的意义。然后简要描述了基于MPEG4IP的集成了音视频和教师屏幕数据等多种媒体的同步教学系统设计框架。之后重点分析了同步教学系统中学生客户端课件播放工具的设计方案与基于GTK＋图形库的实现机制,并深入探讨了播放器实现中SDL库的运行机制。最后针对系统的不足提出了进一步的研究方向。     

标准化课件制作系统

基于计算机网络的远程教育近年来的迅速发展,标准化、实用化的课件制作工具的研究也逐渐成为热点。该文提出了符合IEEELTSC(IEEE学习技术标准委员会)的两个重要规范CMI(ComputerManagedInstruction)、LOM(Learn-ingObjectMetadata)的学习资源组织模型,基于这个模型设计并实现了标准化课件制作系统,对于促进我国网络教育资源标准化具有重要意义。     

基于XML的同步多媒体课件制作系统

基于 Internet的远程教育是当前 Internet应用的热点 ,教学资源的组织和发布是其中的一项关键技术 .本文在简要分析可扩展标记语言 XML 的基础上 ,介绍了清华大学远程教学系统中基于 XML 的同步多媒体课件制作子系统 .该子系统采用基于 XML 的同步多媒体集成语言 SMIL 进行资源组织 ,以 HTML 同步控制模块的形式进行资源发布 ,使得课件的制作符合国际标准 ,并且与当前流行的 HTML紧密结合     

Personalized web-based tutoring system based on fuzzy item response theory

With the rapid growth of computer and Internet technologies, e-learning has become a major trend in the computer assisted teaching and learning field. Previously, many researchers put effort into e-learning systems with personalized learning mechanism to aid on-line learning. However, most systems focus on using learner’s behaviors, interests, and habits to provide personalized e-learning services. These systems commonly neglect to consider if learner ability and the difficulty level of the recommended courseware are matched to each other. Frequently, unsuitable courseware causes learner’s cognitive overload or disorientation during learning. To promote learning effectiveness, our previous study proposed a personalized e-learning system based on Item response theory (PEL-IRT), which can consider both course material difficulty and learner ability evaluated by learner’s crisp feedback responses (i.e. completely understanding or not understanding answer) to provide personalized learning paths for individual learners. The PEL-IRT cannot estimate learner ability for personalized learning services according to learner’s non-crisp responses (i.e. uncertain/fuzzy responses). The main problem is that learner’s response is not usually belonging to completely understanding or not understanding case for the content of learned courseware. Therefore, this study developed a personalized intelligent tutoring system based on the proposed fuzzy item response theory (FIRT), which could be capable of recommending courseware with suitable difficulty levels for learners according to learner’s uncertain/fuzzy feedback responses. The proposed FIRT can correctly estimate learner ability via the fuzzy inference mechanism and revise estimating function of learner ability while the learner responds to the difficulty level and comprehension percentage for the learned courseware. Moreover, a courseware modeling process developed in this study is based on a statistical technique to establish the difficulty parameters of courseware for the proposed personalized intelligent tutoring system. Experiment results indicate that applying the proposed FIRT to web-based learning can provide better learning services for individual learners than our previous study, thus helping learners to learn more effectively.     

基于Web的多媒体课件设计

介绍了基于 Ｗｅｂ的多媒体课件设计技术及实现方法。重点讨论分析了软件实现的几个关键技术：Ｗｅｂ数据库访问及连接技术Ｊａｖａ语言及脚本语言实现教学的交互式动态演示技术及ＶＲＭＬ（虚拟现实建模语言）在Ｉｎｔｅｒｎｅｔ上实现三维虚拟交互式教学等动态Ｗｅｂ技术,并详细介绍了关键技术在《计算机网络技术》多媒体课件中的应用。     

多媒体课件的制作与研究

本文介绍了当前多媒体教学系统,课件制作的素材来源、制作开发情况,提出课件制作中存在的问题和相应的对策.     

An intelligent learning diagnosis system for Web-based thematic learning platform

This work proposes an intelligent learning diagnosis system that supports a Web-based thematic learning model, which aims to cultivate learners’ ability of knowledge integration by giving the learners the opportunities to select the learning topics that they are interested, and gain knowledge on the specific topics by surfing on the Internet to search related learning courseware and discussing what they have learned with their colleagues. Based on the log files that record the learners’ past online learning behavior, an intelligent diagnosis system is used to give appropriate learning guidance to assist the learners in improving their study behaviors and grade online class participation for the instructor. The achievement of the learners’ final reports can also be predicted by the diagnosis system accurately. Our experimental results reveal that the proposed learning diagnosis system can efficiently help learners to expand their knowledge while surfing in cyberspace Web-based “theme-based learning” model.