基于互联网的网上阅卷系统的设计和实现

【作者】 丁琳；

【导师】 张际平；

【作者基本信息】 华东师范大学 ， 计算机应用技术， 2003， 硕士

【摘要】 目前，社会各界都在呼吁和强调“深化教育改革全面推进素质教育”的重要性，作为评估人才素质的各类教育考试，越来越注重对考生创新意识和实践能力的考查。就这一衡量标准而言，教育测试中的主观题相对于客观题更具优势。但是，主观题的评卷误差难于控制，而且一旦处理不当，必将影响考试的公平性。 近年来，计算机技术、网络技术、图像处理技术的发展，深刻地影响着教育考试领域的方方面面。网上阅卷就是在这种背景下应运而生的一种以控制主观题评卷误差，实现公平、公正原则为目的的全新的阅卷模式。 本文首先阐述了网上阅卷模式的工作原理，分析比较了网上阅卷系统的应用现状，提出了构建基于互联网的网上阅卷系统的设计方案，不仅有效地降低了评卷误差，提高了评卷后期的工作效率，而且为评卷教师提供了较大的时间和空间的灵活性。 本文所做的工作主要包括： ①提出了一套基于分布式多层架构的系统设计方案，对系统框架、功能模块和数据库结构进行了详细规划。 ②针对系统涉及的安全需求，探讨了各种相关的安全技术，并在此基础上提出了一套适合网上阅卷系统的安全解决方案：在评卷教师身份认证方面，提出了基于指纹识别技术的认证方式；在信息的安全传输方面，借用了成熟的SSL加密通信机制。 ③针对系统的高稳定性和高可靠性要求，提出了具有容错能力和负载均衡机制的基于MIDAS技术的应用服务器的设计方案：实现了网上阅卷系统的业务逻辑；优化了数据库的连接机制。 本文是在开发上海市教育考试院立项的“关于建设具有上海特色的高考网上阅卷系统新尝试”的基础上撰写的。本人实际参与了整个项目的系统设计，完成了安全子模块、应用服务器业务逻辑模块和系统性能优化方面的设计和技术实现。更多还原

【Abstract】 Presently, the importance of the deepening of the educational reforms and the whole-scale improvement of the holistic education is noticed and stressed in almost every field. Examinations of all kinds to assess the quality of the talents are progressively focusing on the test of the creativity and capability of the candidates in the exam. As far as the assessing standards are concerned, the subjective questions in the exam enjoy more superiority than the objective ones. Errors in correcting the subjective questions, however, are hard to avoid; meanwhile, if unsuitably handled, the justness of the exam will inevitably be affected.In the past few years, the development of computer technology, network technology, image process technology is exerting far-reaching influence on the educational examination. Scoring on network, a completely new kind, comes forth to avoid the errors in the correction of the subjective questions and therefore realize the justness and fairness.The thesis illustrates the working principles of the scoring on network and analyzes and compares its current situations. The paper concludes with the scheme of the scoring system based on Internet, which not only diminishes the errors in the paper correction and improves the efficiency in the later stage of the work, but also makes the teachers’ working time and space more flexible.The paper consists of the following main parts:?It presents the systematic design based on the distributed multi-tier architecture. It offers the integrated design such as system framework, function module and database structure.(2) With the involved security requirement, the thesis analyzes the current technology relative to the information security and brings forward a set of security solution suitable for scoring on network system: as for the authentication of scoring teacher, it advise the fingerprint authentication; as for the secure transmission of information, it borrows the mature mechanism of SSL encrypt communication.(3) With the demand of stability and reliability, the thesis brings forward an application server design scheme based on MIDAS technology, with the capability of error-tolerance and load-balance. It also represents system operation logic and the optimization of database connection mechanism.This thesis is based on a project called scoring on network system experiment with Shanghai characteristic, administrated by Shanghai Municipal Educational Examinations Authority. I participated in the system design of the whole project and completed the design and the realization of the security module, application server operation logic module and system performance optimization.更多还原