一个远程教学系统的设计与实现
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摘要
为了充分发挥计算机网络在教学中的作用,进一步促进教学模式、教学方法与教学手段的改革,本论文在对国内外远程教学现状、现代教学理论下的教学模式及当前计算机软硬件技术、网络技术的发展现状进行分析的基础上,独立研究并开发了计算机网络多媒体教学平台系统及多媒体教学平台的两个实例,即远程辅导答疑子系统和《软件工程》多媒体课件子系统。该系统通过集成化的方式,在现有的远程教育技术条件下,把教师、学生及课件等信息有机的结合起来,进行多种教育模式及各类信息的高效管理,形成了完整、实用的远程教育系统,使远程教育得以顺利和高效的实施。本系统在开发的过程中以计算机软件工程理论思想为指导,采用了面向对象的方法进行设计与实现。
     文中首先应用UML(unified modeling language)对系统建立了需求及分析模型,并为系统建立了合理的关系数据库。在理论分析的基础上进行了系统的详细设计,在具体实现时,采用了Visual Interdev作为系统集成开发环境,并讨论了系统实观过程。
     其次,在文中还以较大的篇幅分析了远程网络教学中辅导答疑系统的现状和存在的技术问题。提出了利用Web页面生成技术和数据库等技术来开发辅导答疑系统的设计思想,对构造答疑系统中涉及到的关键技术进行了详细的分析。该辅导答疑系统具有一定的智能化特征,在远程网络答疑系统中有着推广应用价值。
     论文的最后讨论了《软件工程》多媒体课件系统的制作方法与流程。该课件采用DREAMWEAVERS和FLASH5开发工具进行制作。本课件不仅网页内容丰富,图文并茂,动画新颖形象,而且占用空间比较少,便于在观有的网络状态下进行数据的传送。在制作过程中,我们大胆的尝试,采用了压缩大纲、图片文字、级联格式、分层等最新的DHTML技术来构造课件。在课件制作过程中使用了动态效果按钮、受控制的滚动字幕、掩罩显示等多种特殊视觉效果,并实现了强
    
    ——
     大的交互功能,提供了各种导航。以方便用户操作和使用。
     总之,系统卖破了传统澡堂敦学的控制界限,将课堂教学、课外答疑等各
     个环节紧密地联系起来,真正体现了以学生为主体约敦学方针,为广大用户提
     供了一个基于互联网的先进的教学环境,为教学改革提供了新的思路和实用的
     远程教学平台,其研究成果有助于教学改革的深入进行。
In order to make the computer network playing a important role in teaching adequately, further advanced the reform of teaching mode, teaching method and means, this thesis based on international and national long-range teaching condition, modem teaching theory of teaching mode4 and current computer software, hardware technology, network technology, study and develop computer network multimedia teaching terrace system, long-range assist reply system and software Engineer multimedia system. Above three system through integrated mode, in the condition of current long-range teaching technology, united ware the information of teacher, student and course went on to manage many kinds of teaching mode and every kind of information effectively, formed complete, pragmatic long-range teaching system, made the long-range teaching carried out smoothly and effectively. This system directed by computer software engineering theory hi developing process, use orient-object method designing and completing.
    The passage first used UML (unified modeling language) creating requirement .and analyze module for the system, and created reasonable relation database. Based on theory analyzed, it designed detail for the system, in specific carry out, use Visual Interdev as system integrated develop environment, also discussed how to carried out the system.
    Second, the passage analyzed long-range network teaching help reply system about current circumstance and exhausted technical problem through long space. It posed designing thought about using web page create technology and database to develop help reply system .It analyzed detail about constructing help reply system referred to key technology. The help reply system has some intelligent character; its study achievement has widely application value in long-range network reply
    
    
    
    system.
    The thesis discussed software Engineering multimedia course ware system authoring method and flow in the end .The course ware authored by fiashf and ream weavers develop toot .Not only is the content rich, graphics and texts ail had, automatic picture novel and imaged, but also took up small space, it is convenient to delivery dates in the condition of current network
    It use automatic effect button, move character controlled, mask display and so many peculiar effect.
    In the making process, and achieved formidable interaction function, provided all kinds of navigation, it is convenient to operate and use for users.
    In a word, the system break the control limit of traditional class teaching, it inseparable relative with class teaching, out of class reply and so many link, it really embody the teaching guide principle depend on student, it provide an advanced teaching environment based on internet for wide users, it also provide new thought and pragmatic long-range teaching terrace for teaching reform, its study achievement is useful for further going on with teaching reform.
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