The Design And Research Of Distance Learning Network Virtual Experiment System

Experimental teaching is an essential tache in teaching and learning activities, holding an important position in the modern education. But most of schools have finite experiment conditions, especially some valuable instruments, therefore, many experiment can not be worked normally. And, for Distance Learning, because of the separation of space, Students can not do actual experiment. Experimental Teaching online for nowadays, more for providing opportunities of looking , is not conducive to the Training of students on their research capabilities and innovation ability. With the rapid development of computer technology and network technology, it's possible for the construction of Distance Learning Network Virtual experimental system to solve the problem. Virtual network experimental system expands the time and space of experiment teaching and improves teaching efficiency. So,not only can it be supplementary of experimental classroom teaching, but also injects new vitality to the development of experimental teaching during Distance Learning—-this is why it's now a hot issue for present research.This paper expains the Distance Learning Network Virtual experimental system from four aspects. First of all, this article analysis the status quo of domestic and international Distance Learning network virtual experiment system. At the same time, it researches the meaning of the network Virtual experiment system research, its necessary and feasibility. In the next place, basing on the analysis of the Common Construction Technology of network virtual experimental system, it puts Three-tier architecture of the system: the surface layer is constructed through HTML,JAVA VC++,VRML technologies, the Communication layer bases on JAVA SOCKET and the Control layer by ADO, a point of view that it should be integration with a variety of technologies, nails down the developing Technology of it. Then, the article designs the Distance Learning Network Virtual experimental system with the Three-tier architecture model drawing ,determines overall goals of the system,design principles,function modules and its architecture. Ultimately, it Develops the Three architecture design model By the paper through specific examples, realizes the function of the system.The system possesses characteristic such as convenient operation, friendly and intuitive interface, usability, and The strong usability and serviceability. Network database is adapted , enhancing users process the distributed Data with Security of date boosted and transparency of the date in Large-scale experiment. By Web publishers and testing, tests initially the Operation results and study results with the system, gains the advantage of the system's operation and other feedback information to be improved, with operating results figure provided. with once data input by the user, then increase and recompose are the only needs for require. Input workload is reduced greatly. Since the system is designed according to general demand, the apply range is very large—not only bestowed for Operation and management of Distance Learning Experiment but also for Demonstrativeness of teaching Management.