Design And Implementation Of The B/S-Based Examination System

Traditional examination based on paper and pen has many shortcomings such as the waste of time in compiling examination questions, revising examination papers, and having statistical work, the difficulty in realizing the separation of teaching and testing, and the artificial factors' influence on the test result and so on . In all kinds of different levels of school educational reform, the construction of the examination question base and the separation of teaching and examing are extremely important, which urgently needs one highly effective, speedy and scientific integrative system of the trial question bank, the automatically making examination papers, the online examination and formative teaching appraisal.At present, there are some faults in most of the current online exam systems such as the lack of expansion and safety, and the unitary organizational method. So it' s difficult to be applied in the formal exams on a large scale. In accordance with this situation, the thesis introduces some relative theories and technological background of online exam systems. Aimed at the characteristics of functions, the system makes use of ASP and adopts object-oriented methods of building and the popular three layers of systemic structure. It also probes into the theory of designing subjects and shows the detailed description on how to design and realize the system. This system' s merits are mainly as follows:1. The test question is closely connected with the curriculum ability standard. According to specialized ability standard, we can formulate curriculum ability standard. And we can make the test question thread up the curriculum ability standard, and enable it more pointed and the test valid.2. The examination papers threads up the test goal and the compilation of test question is convenient and speedy. So long as you input the constraint conditions such as the distribution of examination places, difficulty rank, and topic quantities, the software with genetic algorithm can automatically produce the examination papers which conforms to hypothesis goal. It can also realize the separation of teaching and testing effectively.3. Scoring the test papers and analyzing the statistical result are not only accurate but also quick. The computer automatically revises examination papers for the objective questions and teachers revise examination papers for the subjective questions, which can greatly reduce the work of teachers and enhance teachers' working efficiency and the accuracy of examining test papers.The system has the merits like good expansion, safety and maintainability and so on. Now it can be used experimentedly and its result is very reasonable and effective, and accordingly obtain the anticipant purposes of study and practice.