基于JMF的远程教育系统中实时音频的实现

现代远程教育系统中,音频传输是重要组成部分之一。为了实现现代远程教育中实时音频的传输,介绍了流媒体的相关技术及Java媒体框架的基本结构,描述了流媒体传输的两个基本协议RTP/RTCP,分析了基于JMF的流媒体数据传输的基本原理。阐述了远程教育系统中实时音频的采集与传输,并实现了怎样通过网络发送和接收远程教育系统中实时流媒体数据。音频、视频为远程教育提供了丰富多彩的教学手段,促进了我国教育事业的发展。     

基于Web的远程教学模式下多媒体通信技术的应用

多媒体通信技术为远程教学模式创造了实时的交互式学习环境,使得当代的远程教育质量和效果大大提高,远程教育的大规模发展已成为可能。但我国目前的远程教育在某些方面还不尽人意,存在传输信息单一、传输速度慢、实时性差等问题,使得远程教学的效果受到很大影响和限制,而导致这些问题的关键是实时交互多媒体通信技术。本文即为华中师范大学网络教育学院周自波老师就基于Web的远程教学模式下实时交互多媒体通信技术的应用所做的一些探析。     

基于JMF的远程教育系统中实时音频的实现

现代远程教育系统中，音频传输是重要组成部分之一。为了实现现代远程教育中实时音频的传输，介绍了流媒体的相关技术及Java媒体框架的基本结构，描述了流媒体传输的两个基本协议RTP／RTCP，分析了基于JMF的流媒体数据传输的基本原理。阐述了远程教育系统中实时音频的采集与传输，并实现了怎样通过网络发送和接收远程教育系统中实时流媒体数据。音频、视频为远程教育提供了丰富多彩的教学手段，促进了我国教育事业的发展。     

基于Web的远程教学模式下多媒体通信技术的应用

多媒体通信技术为远程教学模式创造了实时的交互式学习环境，使得当代的远程教育质量和效果大大提高，远程教育的大规模发展已成为可能。但我国目前的远程教育在某些方面还不尽人意，存在传输信息单一、传输速度慢、实时性差等问题，使得远程教学的效果受到很大影响和限制，而导致这些问题的关键是实时交互多媒体通信技术。本文即为华中师范大学网络教育学院周自波老师就基于Web的远程教学模式下实时交互多媒体通信技术的应用所做的一些探析。     

远程教育系统及其应用

远程教育是随着当今计算机及网络技术的发展而产生、发展的。Ｉｎｔｅｒｎｅｔ的应用和普及为远程教育的发展提供了新的机遇。本文分析了远程教育系统的基本原理,提出了一个远程教育系统的工作模型,它包括一个基于Ｗｅｂ 的远程教育系统和一个基于视频会议的实时教育系统。本模型已初步实现,并在实际教学中取得了良好效果     

基于IP／WEB的远程教育模式的研究与探索

为了满足全民教育、终身教育的需求，远程教育需要有一个实质性和突破性的飞跃。而这种飞跃的直接促动因素将是以计算机、远程通信及认知科学相结合的“知识媒体”在远程教育系统中的综合运用。根据远程教育目前呈现出来的发展趋势——着重个性化学习、快速的信息反馈、多种信息技术的融合、虚拟校园氛围、优秀资源的共享，结合自身的经验及优势，我们提出了基于IP／WEB的远程教育模式。该模式主要包括：实时交互式远程教学平台、网络辅助教学系统、远教信息管理系统等。目前，该模式准备用于上海远程教育集团与复旦大学远程教育学院合作办学项目中。     

基于IPTV的网络教学系统的设计

以IPTV技术为支持的远程教育模式具有投入少且效果好的特点,在远程教育中发挥着越来越重要的作用.利用P2P和流媒体技术为支撑,设计和实现了具有IPTV交互特点的远程教育系统.该系统包括课后练习,测试以及答疑等学习活动,实现集在线学习,游戏娱乐,生活服务于一体的互动数字化教育,并有效解决实时课堂传输中视频质量的问题.     

从国内的E—Learning网站谈起

E-learning(电子学习)是以多媒体技术,计算机网络技术为主体,以自主的个别化学习与交互式集体协同学习相结合为主要学习方式的教育模式,它是第三代远程教育,其特点是运用计算机网络技术和多媒体数字技术,在数字化环境下进行交互式的学习,使信息及时传递,网络教育资源充分共享和利用;实时或非实时任意交流、讨论;学生自主学习,个性化学习及协同学习;促使教育社会化、家庭化。     

基于WWW远程教育的实时视频点播研究

论文首先介绍了远程教育的意义、作用、现状和发展趋势,提出了基于ＷＷＷ 远程教育中实时视频点播系统的体系结构和工作机理,并阐述了实时视频数据流回放算法和传送协议     

实时课堂教学在气象远程教学中的应用

实时课堂是网络会议的一种形式。本文主要介绍了实时课堂及气象远程教学的特点、实时课堂的主要功能及其应用改进。实时课堂的应用推进了气象远程教育组织和实时教学,充分利用实时课堂各种功能,可有效适应气象远程教学特点,提高面授与远程教学结合。     

Real-time collaboration of virtual laboratories through the Internet

Web-based learning environments are becoming increasingly popular in higher education. One of the most important web-learning resources is the virtual laboratory (VL), which gives students an easy way for training and learning through the Internet. Moreover, on-line collaborative communication represents a practical method to transmit the knowledge and experience from the teacher to students overcoming physical distance and isolation. Considering these facts, the authors of this document have developed a new dynamic collaborative e-learning system which combines the main advantages of virtual laboratories and collaborative learning practices. In this system, the virtual laboratories are based on Java applets which have embedded simulations developed in Easy Java Simulations (EJS), an open-source tool for teachers who do not need complex programming skills. The collaborative e-learning is based on a real-time synchronized communication among these Java applets. Therefore, this original approach provides a new tool which integrates virtual laboratories inside a synchronous collaborative e-learning framework. This paper describes the main features of this system and its successful application in a distance education environment among different universities from Spain.     

基于高速IP网的远程教育系统

文章介绍一个基于高速IP网络的跨城市的多媒体远程教育系统。该系统充分利用先进的网络技术、多媒体技术、客户/服务计算技术等技术,实现了远程实时授课和远程异步学习与交流等主要的教学活动,并提供与之配套的安全保障措施、控制管理系统以及工具软件。希望该系统能为我国的教育事业为适应知识经济时代的社会需求而进行的变革和发展提供有益的参考和经验。     

现代远程教学系统的设计和实现

介绍了网络化教学及智能化远程学习系统。分析了网络化教学流程及其主要部分的模型。通过典型实例，探索了对具体系统的开发设计，证明了智能化远程学习模型是一个实用的远程学习智能化方案，模型具有可实现性。     

Modelling of distance education forum: Formal languages as interpretation methodology of messages in asynchronous text-based discussion

This article presents a study carried out in the area of distance learning electronic forums. Based on the relevant bibliographic review, electronic forums are increasingly becoming part of the learning process. The specific study was stimulated by previous works relevant to the modelling of the behaviour of IT students at Hellenic Open University (HOU) and addresses the issue of distance learning forum modelling using a formal language, aiming to fill the gap that exists in this area, which is demonstrated by the relevant bibliographic review.     

基于Web进行远程教育的优势和实现

远程教育通过网络作为教学媒体,其优势不仅在于它是很好的内容载体,可以随时随地访问,还在于它提供了很多交流渠道,为师生之间、学生之间的充分讨论提供了可能,这对于提高教学质量、促进学生智力的开发是十分重要的.总结了现代远程教学系统中常用的交互方式,从功能层面描述了交互性的用途,从技术层面分类讨论了远程教学中交互性实现的几种途径.并且通过实现远程网络教育来进行具体说明.     

基于Multi—Agent的个性化远程教育系统研究

以学生为中心的个性化、交互协作式教学是远程教学的本质特征。在分析远程教育的现状基础上，论文提出了基于多代理技术的个性化远程教育系统。该系统集www技术和Agent技术与一体，通过智能教学Agent跟踪学生学习情况，监视学习交互进程，收集并分析学生在教学各环节的信息，从而为学生提供个性化的学习建议指导。与传统的远程教育系统相比，该系统更能充分体现远程教育个性化教学特点，真正做到因材施教和提高教学质量。     

Learner attending auto-monitor in distance learning using image recognition and Bayesian Networks

Distance learning is one of the common education methods. Its advantage lies in that the student can learn at anytime or anyplace. However, such a learning mode relies highly on the dependence of the student. Under different environments and conditions, not all the students can be attentive. In this research, an auto-detection system has been designed, using image processing and recognition technique, for defining the facial expressions and behavior easily found when a learner is inattentive or in bad mentality under distance learning environment. From the learner’s facial expressions and behavior features, the attentiveness of the student during distance learning can be determined by Bayesian Networks Model.After implementing the system of this research, and performing practical test, it is found that the accuracy of identifying the features of bad mentality and inattentive behavior is high. From Bayesian Networks assessment and inference, the learning attentiveness of the student can be determined precisely to have the teacher control the learning condition of the student explicitly.     

Students’ experiences with collaborative learning in asynchronous Computer-Supported Collaborative Learning environments

This paper describes an explorative study carried out to gain response from distance students on their experiences with collaborative learning in asynchronous computer supported collaborative learning (CSCL) environments. In addition, this study also attempts to have a good grip of crucial aspects concerning collaborative learning. The study was undertaken among distance learners from the Open University of the Netherlands who were working in groups of 4–11 persons. During and after the course students’ experiences with collaborative learning were measured and after the course also students’ satisfaction with collaborative learning was assessed. The finding revealed that distance learners appreciate the opportunities to work collaboratively. They show positive experiences and are quite satisfied with collaborative learning. This study also sought to explore individuals as well as course characteristics that influenced aspects of collaborative learning, and to search aspects of collaborative learning that influenced students’ satisfaction. The findings suggested that a group product influences group process regulation and group cohesion influences students’ satisfaction with collaborative learning.