The Study And Design Of On-line Item Bank Faced The Long-Distance Opening Students

On-line item bank is an educational measurement tool based on exact mathematical model .It is founded according to educational measurement and evaluation theory strictly. It sets up a subjects'aggregate with the help of the computer.Nowadays, there are a lot of professional item banks. But few contains all virtues, few fits the long-distance teaching. Absorbed the essential theory in the computer adaptive test and the long-distance teaching, the opening and the subjectivity is the outstanding characteristic of this system.With the deep analysis in the history and application of the on-line item bank, I put forward the idea and research aim of this item bank by my own long-distance teaching experience.Under the direction of the educational measurement and evaluation theory, the text brings out an embedded systems analysis. In order to react on the long-distance teaching enough, the item bank emphasizes functions in both educational evaluation and resources. Based on the characteristic of the on-line, this text studies automatic tactics of the test paper deeply. The system also provides the arithmetic of the automatic tactics of the test paper. The tactic of man-machine evaluation will solve the difficult problems of the paper scoring. This tactic is another characteristic of this item bank system.The security plays an important role in the on-line item bank. This text pays more attention to the problem of the security. Through particular study, the text works out ways and means of the countercheck, with help of which the system can prevent the item bank from the attack both in software and in hardware. The research and design of the long-distance students'on-line item bank can help not only the students but also the teachers. It will promote the long-distance teaching consequentially .It will enhance the quality of the long-distance teaching too!...