IEEEIEE Electronic Library(IEL)全文数据库检索.ppt

IEEE/IEEElectronicLibrary(IEL)全文数据库,提供美国电气电子工程师学会和英国电气工程师学会出版的刊物（1988年-）120多种期刊600多种会议录近900种标准,AdobeAcrobatReader软件,网上浏览、保存阅读全文电子期刊（PDF格式）4.x的版本,检索环境,采用IP地址限定用户范围，不需要帐号和口令。校园网的用户均可通过连接INTERNET访问美国IEL主页电话拨号连接校园网的用户，可以拨打999联通IEL由于IEL目前不提供镜像和专线访问的技术方案读者通过INTERNET访问该库的国际流量费用需用户自己负担。,使用说明,并发用户数限制在15个出现“Allproductlicensesareinuse.Pleasetrylater.”的信息检索完毕尽快退出，以便他人能够联通,检索方式,SearchAdvancedSearch,AdvancedSearch,支持字段检索和逻辑算符ViewFieldNames浏览字段符ViewSearchOperators浏览逻辑算符限定在某一字段中检索，格式为：检索词字段名例如：检索SmithJ.的文章，检索式为：SmithJ.au,著者检索途径说明,著者检索一般是姓在前，名在后；但对于中国人来说可能不符。如王国平wangguoping检索式为：guopingwangau保险的方法：按数据库的记录形式检索,运算顺序,(inferencemechanismsDelgadoM.)VilaM.A.,IEL常用的检索字段及标识符,AbstractabArticleTitletiAuthorauCatalogNumbercaAffiliationcsConferenceTitlectMeetingDatecy,IEL常用的检索字段及标识符,SubjectTermdeISSN，ISBNinIssueNumberisJournalNamejnTitle(Article)tiVolumevo,检索算符,逻辑算符：、位置算符AccrueSpecificFieldPhrase,位置算符Sentence,在同一句子中查找echoISDN(analog,digital,convert),位置算符,ParagraphNearWordStemThesaurus,例子,ceramicti(fiberopticnetwork)ti(ceramic,porcelain)(ti,de)smithauwaveticeramicde1isnewisnew-查找最近30天的加入数据库的新记录,位置算符,限定检索词出现的顺序(echocancel)(coldfusion)(coldfusion)(outputinput)ti,Usewithaproximityoperatortomatchsearchtermsonlyiftheyappearinthespecifiedorder.(Bydefault,proximityoperators(except)matchsearchtermsregardlessoftheirorder.)tendstonarrowasearchbecauseitplacesanadditionalconditiononrecords.,Syntax,proximityexpressionwhereproximityexpressionisasearchexpressionbasedonavalidproximityoperator.NotesYoucanusewiththeproximityoperators,and.Ithasnoeffectwiththeoperatorbecauseorderisassumedwith.Examples(coldfusion)Matchesanyrecordcontainingavariationofthewordcoldfollowedbyavariationofthewordfusioninthesamesentence;doesnotmatchanyrecordinwhichfusioncomesfirst.(coldfusion)Matchesanyrecordcontainingavariationofthewordcoldfollowedbyavariationofthewordfusionwithin10wordsofeachother.(outputinput)tiMatchesanyrecordcontainingthewordoutputfollowedwithin3wordsbythewordinputinthetitlefield.(Youcanuseanclauseasanargumentto,butyoucannotuseasanargumentto.,ProximityOperatorsWithproximityoperatorsyoucanfindsearchtermsthatappearwithinaparticularfieldorthatappearnearoneanotherwithinarecord(increasingthechancesthattheyarerelated).Proximityoperatorsinclude:Formatchingtermsinaspecificfield.Formatchingtermsinthesameparagraph.Formatchingtermsinthesamesentence.Formatchingtermsinthesamephrase.Formatchingtermswithinaspecifiednumberofwordsofeachother.,phraseOperatorUsetheoperatortosearchforrecordsinwhichtwoormoresearchtermsmustappearwithinthesamephrase(anyphrasewithinanyfield).Syntaxsearchterm1searchterm2?searchtermNor(searchterm1,searchterm2,?searchtermN)whereeachsearchtermisanyvalidsearchtext.NotesAphraseistextdelimitedbyaperiodoracomma.Ifthesearchtextappearswithinasentencecontainingnocomma,worksthesameas.Ifthesearchtextappearswithinasentencethatdoescontainacomma,thesearchtermsmustappearonthesamesideofthecomma.Bydefault,matchessearchtermsonlyiftheyappearwithinthephraseinthespecifiedorder(unlikeand).Usingwithhasnoeffect.ExamplescachealgorithmMatchesanyrecordcontainingvariationsofcacheandalgorithmwithinthesamephraseandinthesameorder,anywherewithintherecord.(processor,silicon)(silicon,processor)Matchesanyrecordcontainingvaria