神马文学网学位论文 PQDD 2
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PQDD－＞ 检索界面｜检索式构成｜检索结果｜检索实例
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检索式的构成
检索式可以是单词或词组的组配。组配算符有：
Pre/n (两词之间可以插入n个词，词序一定) 词组检索： 用空格将单词隔开进行精确的词组检索，例：title (cross country skiing) 噪音词： 以下单词作为检索词时，系统将自动忽略并用空格取代进行检索。
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检索字段PQDD提供了14个检索字段，常用字段包括：题目(Title)、文摘(abstract)、作者(author)、导师(advisor)、学校(school)、学科(subject)、年代(year)、语种(language)等。有关字段名称、缩写及其具体用法详见下表。
字段名全称 字段名缩写 用法举例 Abstract ab, abs, abstract ab(Iowa and caucus?), ab(ozone) Adviser ad, adviser, advisor ad(Kani), adviser(Smith, Ann?) Author au, at, author au(Hart, William) Degree Date ddt, da, date, yr, year DDT(1996),da(<1990),yr(1980:1990) Degree Awarded dg, ddn,degree DG(PHD),degree(MILS) Dissertation Database ID disdb Disdb(DAI), DISDB(MAI) Dissertation Volume/Issue disvol Disvol(DAI-B 56-02), disvol(B) ISBN isbn ISBN(91-554-3527-0) Keyword (Basic Index) bi,keyword Bi(mooring?),keyword(Cuba or Haiti) Language of Dissertation la, language La(French) Publication/Order Number pn, no, publication Pn(AAT9634098) School Name/Code sc, sch, school Sc(Wayne State), SC(0254) Subject Name/Codesu, sub, subject Su(Cinema), su(0900) Title ti, title TI(Fuzzy logic),ti(NASA Astrophys?)