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学号：200715150125HEBEIUNITEDUNIVERSITY毕业论文GRADUATETHESIS设计题目：广安地区孕妇血清胱抑素C参考范围的建立学生姓名：张娜专业班级：医学检验学院：临床医学院指导教师：徐远久副主任检验技师XXXX年XX月XX日摘要-I-摘要目的：确定广安地区孕妇与正常健康人血清胱抑素C浓度关键词Abstract-II-AbstractWiththerapiddevelopmentofInternetintheinternational,moreandmoreweb-basedapplicationswereincreasinglysubjecttopeople'sattentioninrecentyears,andthemoderndistanceeducationhasbeentremendousdevelopment.Theweb-basedexaminationsystemisemergedinsuchasituation.Althoughthetraditionalformofexaminationisalsoverycommon,withtheexpansionanduniversalityofdistancelearning,theonlineexaminationsystemcomeintobeingasasubsystemofdistancelearningsystem.AutomaticTestPaperisacrucialpartintheexaminationsystem.Withtherapiddevelopmentofartificialintelligence,thisissuehasbeenagrowingnumberofscientistsconcerned.AutomaticTestPaperistherealfollowastrategyoftopics,andselectagroupofquestionsfromthequestions,makesthemallthepropertiesarewithinacertainrangebyvolumetomeettheexpectationsindex.Thecoreoftheproblemismulti-targetstrategyofchoice.Thedesignofdatabaseisalsoaveryimportantpartintheexaminationsystem,andthedesignofdatabaseisgoodorbadwilldirectlyaffecttheeffectivenessofautomaticTestPaper.Thispaperdesignsandimplementsanon-lineexaminationsystem,anditsfunctionsincludeon-lineexaminations,testmanagementandmaintenance,automaticTestPaper,Gradeexaminationpapersandgradepoint,seeingresultsandinformationmanagementfeaturessuchasstudentsetc.ItfocusesontheautomaticTestPaperalgorithmandthedatabasedesignproject,andgivestheTestPaperalgorithmandthedatabasedesignprojectofon-lineexaminationsystemintegratingthecharacteristicsofon-lineexaminationsystem.TestPaperalgorithmisthefocusoftheresearch,andinalargenumberofdomesticandinternationalliteratureonthebasisof,thispaperuseageneticalgorithmasaintelligenceandoptimizationTestPapertosolvetheproblemofTestPaper.Algorithmiscarriedonthedetaileddesignandanalysisinthetext,andcodingstructure,cross-operatorandmutationoperatorarecarriedonadistinctivedesign,andmakethegeneticalgorithmtomeetTestPaperastherequirementsofthisparticularissue.Keywordsexaminationsystem;automatictestpaper;database;geneticalgorithm目录-III-目录摘要.............................................................................................................................IAbstract..........................................................................................................................................II第1章绪论..................................................................................................................11.1在线考试的现状.................................................................................................11.1.1在线考试在国外的发展状况.......................................................................11.1.2在线考试在国内的发展状况.......................................................................11.1.3当前在线考试系统的特征...........................................................................11.2组卷算法的现状.................................................................................................21.3.本课题的来源......................................................................................................21.4本文主要内容......................................................................................................21.5本章小节.............................................................................................................2第2章组卷算法与题库的研究..................................................................................32.1组卷算法理论......................................................................................................32.1.1随机选取法和回溯试探法............................................................................32.1.2遗传算法.......................................................................................................32.2在线考试系统的组卷算法.................................................................................32.2.1组卷算法的确定...........................................................................................32.2.2组卷参数定义................................................................................................42.2.3基于遗传算法的组卷算法设计...................................................................42.3题库基础理论.....................................................................................................52.3.1题库发展.......................................................................................................52.3.2题库的概念...................................................................................................52.3.3题库的特征...................................................................................................52.3.4题库的建设理论............................................................................................52.3.5题库建设步骤................................................................................................52.4在线考试系统的题库建设方案.........................................................................52.4.1在线考试系统的题库建设步骤...................................................................62.4.2题库管理系统框架............