Research And Design On Online Selection Course System Of High School

With the new high school curriculum reform implementation, credit management has been applied in high school. The online selection course system as a tool of credit management has been a new important part of High School Education System. It is necessary to study and develop an online selection course system for the modernization which carries out a teaching management.Firstly, the thesis analyzed the developments of selection system and the current studies situations of online selection course system, and then studied the main existing problems are the equity problem and the network congestion problem. These questions are important part and difficulty of online selection course system. The major reasons of these questions are unreasonable course selection algorithm and a large of concurrent accesses.Secondly, the requirements analysis of the high school online selection course system were analyzed based on UML technology, which finished the requirements analysis by the establishment of case diagrams, static models and dynamic models. Several course selection algorithms commonly used were researched from the fairness of selection course results, whether can reflect student's intention, whether can lead to a large number of concurrent accesses etc. The thesis proposed the design principle of course selection algorithms in order to embody to four principles such as the intention of students, and established the mathematical model that ensured students successfully select courses on the constraint condition. An appropriate course selection algorithm was proposed according to the practical situation of high school and above analysis, it is ACF algorithm. The algorithm fully considered the intention of students, satisfy the demand of some special treatment, stimulate student's study enthusiasm, and avoid a lot of concurrent access. Through the simulation validation, this paper proved the validity of the proposed algorithm.Finally, by using asp.net combined with JavaScript techniques and XML technology, this paper accomplished the design and implementation of online selection course system, and discussed the XML dynamic forms template technology and data island technology, might accomplish the contracted, integrated, dispersing processing data capacity of server. Through the pressure test, network congestion problems occurred. Lack of hardware upgrade, thus, the performance selection has been fully considered in the design phase, so the queuing access scheme was proposed. This scheme can ensure the server in working order when the network congestion occurs, and according to this scheme, this paper designed the NAQ system.