英语论文网

汽液平衡的发展
在第一学期，我们知道一个基于互联网的教育软件平台名为“虚拟学习环境（VLE）。这是我第一次使用这种全新的教育平台。据总部设在美国的学习电路杂志，VLE的定义为：
“一系列广泛的应用程序和进程，如基于Web的学习，基于计算机的学习，虚拟教室，数字collaboration.It包括通过互联网，内联网/外联网（LAN/ WAN），音频和视频内容的交付磁带，卫星广播，互动电视，CD-ROM，以及更多。
The development of VLE https://www.51lunwen.org/computer/
In the first semester we get to know an internet-based educational software platform named Virtual Learning Environment (VLE). This is the first time for me to use such a totally new educational platform. According to US-based Learning Circuits magazine, VLE is defined as:
"A wide set of applications and processes, such as Web-based learning,computer-based learning,virtual classrooms,and digital collaboration.It includes the delivery of content via internet,intranet/extranet(LAN/WAN),audio-and video tape,satellite broadcast,interactive TV,CD-ROM,and more."
A'Herran（2000）提出的VLE分析，有四个观点：
刘志迎，可扩展性，为金钱和与现有系统集成的价值是很重要的用户技术人员以及用户群，技术支持和易于维护将是显着的。
课程开发人员或教师可定制性，灵活性和整合的传统材料是最重要的。
A'Herran (2000) suggests that there are four perspectives from which a VLE is analyzed:
Adminstrators-scalability,value for money and integration with existing systems are important fir these users
Technicians-robustness,user base,technical support and ease of maintenance will be significant.
Course developers or teachers- customizability,flexibility and the integration of legacy materials will be paramount.
Learners- consistency, accessibility and quality of design will be the main concerns.
Based on my understanding, the VLE is a comprehensive ICT-based educational platform which indicates as the figure 1. The ICT include internet and computer.Students, teachers and school administrators are able to interact synchronously or asynchronously via the platform in a non-face-to-face environment as it is 'virtual' but not 'real'.VLE is not only an online virtual classroom, it is an ICT based tool that helps students in effective study and share learning materials(peer-to-peer study). VLE is not only one software, but a fixed style syntheses that integrated with many softwares in different styles.

Figure 1

VLE is developed from Virtual Environments (VE) and Learning Environment (LE). In 1978, MUD (Multi-User Dungeons) was born in United Kingdom, and it was only a game but it was also the prototype model of VE, people used telnet to login, then communicated and played in a virtual network world. MUD was based on a certain kind of programming language and it emulated a real society where people could communicate and interact each other and it was the early for of VE. MUD was developing so rapidly that promoted the growth of Lambda MOO (MUD Object-Oriented) programming language (Tomek,1999). Pavel Curtis used this language to create some early VLEs in 1990s, and the most famous one w