现代远程教育答疑教学模式研究

远程教育从第一代发展到第三代,与科学技术的日新月异以及及时地运用到远程教育中来有密切的关系,相应地为了保障教育质量,在学习者自主学习的条件下,在不同阶段出现不同的各种辅导答疑方式,如面授辅导、值机答疑、E-mail答疑、聊天室答疑和双向视频答疑等方式。从教师和学习者的角度调查来看,他们对各种答疑的看法存在着一定的分歧,通过分析认为流媒体答疑是解决远程教育答疑的比较理想方式。     

校园网远程教学系统的设计

基于校园网的现状和发展趋势，针对我院远程教学的实际情况，本文提出了实现远程教学系统的方案：采用Linux构建的Web服务器实现异步教学；采用Microsoft的NetMeeting SDK开发基于H．323的网上实时授课系统。     

流媒体DRM技术在现代远程教育中的应用

Internet的飞速发展及广泛应用为各种信息资源的传输提供了一个可靠、高效的技术平台,开放式的现代远程教育在此基础上应运而生逐渐成为现代教育的重要组成部分.流媒体技术解决了人们通过网络下载、传输信息的带宽和时间的问题,通过采用高效的信息传送技术, 远程教育突破了传统课堂中时空的限制,实现了教学资源的共享.然而,多媒体课件是远程教育中最重要的数字作品,是其核心价值之所在,网络的开放特征势必造成多媒体课件任意破坏,版权人的合法权益将严重受损.本文试图通过流媒体DRM技术的利用来达到保护数字内容的版权目的.     

流媒体技术在数字图书馆中的应用研究

随着网络的普及和视频资源的广泛使用,流媒体技术在数字图书馆的建设中越来越重要。介绍了流媒体技术的基本原理及其在数字图书馆信息服务中的各种应用。从VOD系统出发,具体介绍了流媒体技术在数字图书馆建设中的应用,并指出了其研究方向。     

流媒体中一种高质量视频内容的设计

结合当前流行的流媒体技术,深入分析了流媒体技术及其文件格式,讨论了如何实现流媒体高质量的视频内容.在此基础上,本文实现了一个基于流媒体的高质量视频内容的设计.     

5G时代融媒体报道的直播化趋势刍议

JIANG Yi-jie(Guangxi Vocational and Technical College, Nanning, Guangxi 530226)     

浅析网络流媒体实时传输技术

流媒体(Streaming Media)又称流式媒体，它是指在网络中使用流式实时传输技术的连续时基媒体。本文从流媒体的基本含义和原理出发，分析了流媒体技术的优点、文件的格式以及在应用中存在的Qos问题。     

Hybrid ants-like search algorithms for P2P media streaming distribution in ad hoc networks

Media streaming delivery in wireless ad hoc networks is challenging due to the stringent resource restrictions,po-tential high loss rate and the decentralized architecture. To support long and high-quality streams,one viable approach is that a media stream is partitioned into segments,and then the segments are replicated in a network and served in a peer-to-peer(P2P) fashion. However,the searching strategy for segments is one key problem with the approach. This paper proposes a hybrid ants-like search algorithm(HASA) for P2P media streaming distribution in ad hoc networks. It takes the advantages of random walks and ants-like algorithms for searching in unstructured P2P networks,such as low transmitting latency,less jitter times,and low unnecessary traffic. We quantify the performance of our scheme in terms of response time,jitter times,and network messages for media streaming distribution. Simulation results showed that it can effectively improve the search efficiency for P2P media streaming distribution in ad hoc networks.     

Joint rate control and scheduling for wireless uplink video streaming

INTRODUCTION Video streaming is becoming one of the major driving forces of next generation wireless networks. For the currently deployed cellular networks, the practical data rates are not enough to support full rate, high quality video applications. As a result, many research efforts have been devoted to adapting video content to reconcile the conflict between the high demand of video quality and the limited wireless communication resources among users. A large body of literature utiliz…