文献检索第四单元.doc

第4单元 外文评价性数据库检索练习一、Ei Compendex Web 方法一：直接链接到 方法二：进入学校图书馆主页（），点击电子资源中的“工程索引”进入。说明：该数据库至少需用两个检索词进行检索。 最终命中文献应少于100篇。（一） Quick Search检索练习检索课题（中文）：矿山机械（英文）：mine machinery所选字段检索词（1）TitleMine（2）Titleequipment（3）TitleMachinery检索式(mine ) WN TI) OR (equiipment) WN TI),OR（machinery）WN TI ,限定条件文献类型Journal article文献处理类型All treatment types语种English年代2009-2010检索结果（命中文献篇数）12（二）Expert Search检索练习检索课题（中文）：矿山机械（英文）：mine machinery1检索式Mine Machinery or equiipment2检索年代：20102011检索结果：48（篇）要求少于100篇说明：输入检索词后，采用wn命令(within)，可以在特定的字段内进行检索，在表达式中可以采用布尔运算符(AND, OR, NOT)，同时，可使用括号指定检索的顺序，另外还可以把“取词根”、“截词”、“通配符”等检索方法运用的检索表达式中。如：(artificial intelligence) wn AB AND (Tsinghua) wn AF 3摘抄其中一篇相关文献的题录TitleUse of machine learning techniques to analyse the risk associated with mine sludge depositsAuthorGiraldez, E.Author AffiliationDpto. de Ingeniera de los Recursos Naturales y Medio Ambiente, Universidad de Vigo, 36310, Vigo, Spain);SourceMathematical and Computer Modelling, 2011二、Derwent Innovation Index 选用的数据库：德温特创新索引DII方法一：直接链接到 方法二：进入学校图书馆主页（），点击“专利文献”中的德温特创新索引DII说明：进入主页后，点击“选择一个数据库”，选择“Derwent Innovations Index”。要求:检索结果应少于100篇文献，摘抄其中一篇相关文献的题录。检索课题（中文）：机械原理（英文）：principle of machinery字段检索词逻辑算符主题principle of machinery且标题Machine且主题principle检索结果（篇）3专利名称Combined two revolute and two cylindrical joints shaft coupling teaching aid for teaching principle of machinery, has bearing provide with seat connected with rotary discs, and bearing movably placed on sliding way专利号CN201498137-U发明者姓名LI Z;专利权人LI Z国际专利分类号G09B-025/00; G09B-025/02摘要The aid has rotary discs (5) whose axes are parallel to each other. Three-round through holes are arranged along axis direction of the rotary discs, such that predetermined gap is maintained between the holes. Included angles between the center lines of three holes are 120 degrees. Two ends of three right-angled connecting rods (4) with round cross sections are separately inserted into the round through holes of discs. A bearing (1) is provide with a seat connected with the rotary discs. The bearing is movably placed on a sliding way (6) and connected by a T-shaped bolt (2) and a nut。stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth, the number of salient poles on each stator pack is equal, the number of elementary teeth on each salient pole of stator pack is equal, stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; rotor packs contain the teeth uniformly distributed along cylindrical surface and the number of which on each rotor pack is equal; even rotor packs are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack, on salient poles of stator packs there is coil m-phase winding of armature, each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; between stator packs t