【作者】 彭晶晶；

【导师】 兰顺碧；

【作者基本信息】 华中科技大学 ， 生物医学工程， 2006， 硕士

【摘要】 目前,许多学校的考试已经由传统的笔试转变为采用计算机考试系统进行考试。采用计算机考试与传统的笔试相比,有很多优势,可以省去试卷印刷的费用,减轻教师阅卷的负担,提高工作效率等等。为充分发挥计算机在信息处理方面的优势,以及根据医学院校的实际需要,本人开发了医学多媒体在线考试系统。医学多媒体在线考试系统采用SQL Server 2000数据库和Delphi进行开发,对多个功能模块进行了设计,并对有关技术进行了论述和运用,包括DCOM技术,MD5加密算法,多媒体传输,事务处理,正态性检验。本系统实现了随机抽题、系统自动判卷、试题管理、用户管理、分数管理等功能,尤其在传统文本型考试的基础上,增加了多媒体题型的功能,使医学生有一个感性直观的认识和理解,适合医学考试的特点。本文分为两部分,第一部分阐述了医学多媒体在线考试系统的设计必须考虑的问题,包括考试系统的体系结构,组成部分,功能模块和系统界面。第二部分阐述了关键技术和难点的解决。特别是对考试系统中的多媒体文件如何上传和下载进行了详细的论述。本系统的多媒体传输部分采取FTP方式,利用Indy组件库中的相关组件来实现所需功能。经过测试,本系统性能稳定,符合医学考试的特点,能取得预期的效果。因此,医学多媒体在线考试系统的设计与实现,在医学领域考试中具有重要意义和实用价值。更多还原

【Abstract】 Today, many school’ s have converted their testing methods from paper tests to computer tests. Computer testing has advantages over traditional paper testing methods. Computer-administered tests save printing and paper costs, lighten teacher’s trouble and improve efficiency. Taking advantage of computer information analysis, catering to a medical university ’s needs and and the like, I developed a medical multimedia online test system.Medical Multimedia On-line the test system was developed using SQL Server 2000 database and Delphi software. Several functional modules were designed. This paper discusses some technologies of the system including DCOM, MD5, multimedia transmission, transaction processing, and normal test. The test system supports many functions, such as: automatic exam scoring, simultaneous testing students, random selection of test questions, administration of test questions, administration of users, administration of scores and so forth. Especially on the basis of the traditional textless exam, it added multimedia functions (video, audio, picture). It is very fit for medicine test.The paper includes two parts: the first part illustrated some problems that must be consider for design a medical multimedia online test system, including architecture of the test system, a compositional part, functional modules, and system interface. The second part illustrated important technologies and difficulty resolutions, especially how to upload and download a mutimedia file of the system. It introduced FTP fashion for this way.An evaluation of the testing system showed that the program was stable, and met the university’s needs for a computerized medical examination. The system is ready to be deployed for regular use.更多还原