流媒体技术在网络远程教育中的应用

流媒体技术是网络多媒体信息的重要传输手段．介绍了流媒体技术的特点与实现，探讨了流媒体技术在网络远程教育中的应用。     

流媒体技术在远程教育中的应用

流媒体是网络环境中的一种新的媒体形式，有着广阔的应用前景。本文初步探讨了流媒体技术的原理及实现流媒体技术的网络协议，介绍了流媒体技术在远程教育中的应用。     

浅谈流媒体技术在远程教育中的应用

随着信息技术与网络通讯技术的日益发展,大大促进了远程教育的推广.然而大数据量多媒体教学资源在网上的传输显得越来越重要和必须.流媒体技术的应用使得网络教学注入了新的活力,以有限的带宽,实现了远程教育视频、音频、动画、多媒体课件和网络课程的最佳传输.本文阐述了远程教育的发展过程以及遇到的问题,在此基础上引入流媒体技术的基本概念.文章着重介绍了流媒体关键技术和流媒体技术在远程教育中的应用作一些初步探讨.     

基于流媒体技术构建第三代远程教育系统

基于流媒体的远程教育是一个突破时空界限,有别于传统的教学模式,它可以轻易扩大教学规模,随时随地的进行交互式教学.流媒体是一个实时,无需等待下载的网络传送技术.在该文中,为基于流媒体的远程教育引入了统一的网络构架和用户功能模块,并且展望了基于流媒体技术的远程教育的将来发展方向.     

流媒体技术在教学中的应用

描述了流媒体技术在网络视频文件传输中的作用，并将流媒体技术应用于远程教育系统．提出了基于B／S结构开发的远程教育平台中视频子系统的设计方案和实现实例。利用流媒体技术存储教学中的视频类素材，使用Microsoft Producer将电子教案与教学视频素材同步，生成流媒体课件，解决了视频和授课讲稿播放时同步难的问题。最后用JSP技术实现了流媒体课件的点播和实时广播播放。     

流媒体技术在远程教育中的应用

流媒体(Streaming Media)是一种新兴的网络传输技术,现代远程教育是把课程传送到校园外的一种教育方式.本文主要介绍了流媒体技术以及如何将流媒体技术应用到现代远程教育中去.     

流媒体技术促进远程教育模式融合

随着网络技术、多媒体技术与通信技术的飞速发展,大量多媒体信息在网上的传输显得越来越重要,便产生了新型的传播媒体——流媒体.流媒体的出现彻底改变了传统因特网只能表现文字和图片的缺陷,它集音频、视频及图文于一体,使之成为未来因特网应用的主流.流媒体技术的产生与发展,必将对远程教育的发展产生重要影响.本文简要介绍了流媒体技术的基本原理、流媒体在网络中的传输格式,并介绍了流媒体技术的教学特点以及它在远程教育中的应用.     

现代远程教育迎来"流媒体"时代

心理学家告诉我们,教学过程中运用的感官越多,它们的作用就发挥得越充分,知识就越容易被理解和掌握。在现代远程教育系统中,以计算机网络和多媒体技术为特征的现代远程教育是目前远程教育发展的主流。针对目前视频信息在线播放效果差的问题,本文作者结合工作实践,提出了将“流媒体”技术应用于现代远程教育系统的解决方案——一个基于“流媒体”技术和Internet网络来实现的现代远程教育系统结构。     

现代远程教育迎来“流媒体“时代

心理学家告诉我们,教学过程中运用的感官越多,它们的作用就发挥得越充分,知识就越容易被理解和掌握.在现代远程教育系统中,以计算机网络和多媒体技术为特征的现代远程教育是目前远程教育发展的主流.针对目前视频信息在线播放效果差的问题,本文作者结合工作实践,提出了将“流媒体“技术应用于现代远程教育系统的解决方案--一个基于“流媒体“技术和Internet网络来实现的现代远程教育系统结构.……     

流媒体技术与远程教育

多媒体与网络技术的飞速发展,产生了新型的传播媒体——流媒体。流媒体的出现彻底改变了传统因特网只能表现文字和图片的缺陷,它集音频、视频及图文于一体,使之成为未来因特网应用的主流。流媒体技术的产生与发展,必将对远程教育的发展产生重要影响。本文简要介绍了流媒体技术的基本原理、三种传输质量控制的流媒体技术,并介绍了流媒体技术的教学特点以及它在远程教育中的应用。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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