基于WEB的答题评卷系统的设计与实现

论文字数:15782,页数:31  有开题报告，任务书

摘   要
Internet/Intranet技术的发展和普及，计算机化考试在许多方面将逐步取代传统的基于纸笔的考试。这种安全可靠、自动化及大规模的无纸化考试系统可以准确地评估被考核者的能力和水平，提高考试效率。探讨和研究基于计算机网络的考试系统的设计与实现，具有特别现实的意义和推广价值。
基于web的答题评卷系统为考试无纸化提供了一套完整的解决方案，提供了相当完善的功能，包括用自动/人工阅卷、成绩统计、成绩查询、信息发布、单元测试、综合模拟和在线考试等功能。系统克服了C/S结构的不足，采用了基于B/S结构的分布式Web应用程序结构，开发过程中主要应用了ASPNET/ style=text-decoration:underline;font-size:14px;color:#2B4DD5; target=_blank>ASP.NET，SQL SEVER等关键技术。
系统突破了传统的计算机考试以理论客观题为主要题型的考核方式，题型完整，实现了基于Internet的简答题，画图板等计算机操作题的考核。采用开放式题库，每道题目均由“题型”、“难度系数”、“知识点”等参数组成，从而保证试卷内容的多样性和多学科通用性。
网络考试系统是未来考试发展方向的必然趋势，可以有效地提高考试系统的规范化及大规模考试的效率，并将广泛应用于各种考试中。

 关键字：无纸化考试，画图板，在线考试，在线阅卷
Designing and achievement for system of answering and correcting
                                 

Abstract
With the development and popularization of Internet/Intranet, conventional examination based on paper and pencil will be substituted for computerized one. The reliable and automation and a large of scale paperless examination system may precise evaluation for the examiners'' capabilities, and may be more effective. The reach on Internet-based examination is becoming practically meaningful and will be used widel.
This system provides a complete solution for paperless test. It provides functions including automatic or handmade evaluation test papers, score statistics, score query, information publication, unit test, comprehensive simulation, test on line, and so on. This system has overcome the disadvantage of C/S structure and is based on the B/S three tiers architecture of Web application, the main technology used in the system includes ASPNET/ style=text-decoration:underline;font-size:14px;color:#2B4DD5; target=_blank>ASP.NET technology.
The system has broken through the traditional way of computer-examination, which is mainly for objective questions, and realizes automatic management for a lot of operating types of questions on the Internet. For example, Word, drawing board, etc. Open test bank is used, every questions composed of such parameters as test-type, test-difficulty, test-content, etc. The test bank will make the system used widely.
The system can enhance formalization and efficiency of alarge scale Internet-based examination, and it will be extensively used in all kinds of examinations.

 Key words：Examination without paper，drawing board，online testing，online checking

目 录
1 引论 1
1.1 课题背景及目的 1
1.2 课题目的 1
1.3 在线考试系统的现状分析 2
1.4 本人主要工作 3
1.5 课题研究方法 4
1.6 论文构成及研究内容 4
2 考试系统设计模式 5
2.1 硬件环境 5
2.1.1 计算机 5
2.1.2 网络 5
2.2 软件环境 5
2.2.1 操作系统 5
2.2.2 开发语言 5
2.2.3 开发模式 6
2.3 系统设计原则 7
3 功能说明 9
3.1 功能要求 9
3.2 性能要求 9
3.3 功能模块划分 10
3.3.1 学生在线考试功能 10
3.3.2 学生查询以往考试的成绩 11
3.3.3 画图板功能 12
3.3.4 教师批阅考卷功能 13
3.4 数据精度 14
4 系统各模块详细设计与实现 15
4.1 系统业务流程设计 15
4.2 系统的数据流图 16
4.3 学生在线考试的详细设计与实现 17
4.3.1 在线考试 17
4.3.2 在线练习及查看联系 17
4.4 教师在线评阅试卷功能详细设计 18
4.4.1 客观题评卷 18
4.4.2 主观题评卷 18
4.4.3 考生查阅历史考试成绩 19
4.4.4 画图题 19
5 总结与展望 20
5.1 研究工作总结 20
5.2 系统改进设想 21
致 谢 23
参考文献 24