实用医学信息检索与利用外文经典综合性数据资源检索与利用课件.ppt

与wos比较 Scopus “分析检索结果”：可视化图谱及其延伸 期刊分析中可比较各期刊的指标 Scopus 不能对所有检索结果进行引文分析，只能选择文献后方可实施。 Exercise 检索shoenfeld,y所写systemic lupus erythematosus的文献.获取该作者scopus ID号，了解该作者在scopus的统计数据，并 分析文章产出情况。（Analyze author output） Ralph A. Defronzo发表在diabetes （糖尿病）杂志上的文献。 Chen YH, et al. KCNQ1 gain-of-function mutation in familial atrial fibrillation SCIENCE 2003,299(5604):251-254 做引文分析。 对出现在标题中的“Embryonic Stem Cells”的文献做结果分析。 检索复旦闻玉梅教授文章共多少篇？And by “Analyze author output” ，view Citation overview. 获取期刊Ca-A Cancer Journal for Clinicians的两个scopus期刊评价指标，并与JCR中IF比较。 Exercise Search articles about “systemic lupus erythematosus” by Y.Shoenfeld, and analyzing the results. Citation overview: Chen YH, et al. KCNQ1 gain-of-function mutation in familial atrial fibrillation SCIENCE 2003,299(5604):251-254. Search articles published by 闻玉梅(wen yumei). And to Analyze author output，view Citation overview. About several indices: SJR SJR (SCImago Journal Rank) is weighted by the prestige of a journal. Subject field, quality, and reputation of the journal have a direct effect on the value of a citation. SJR also normalizes for differences in citation behavior between subject fields. Four years of data are needed to calculate a SJR. Scopus has complete citation data from 1996, so the first SJR value available is for 1999. SJR assigns relative scores to all of the sources in a citation network. Its methodology is inspired by the Google PageRank algorithm, in that not all citations are equal. A source transfers its own prestige, or status, to another source through the act of citing it. A citation from a source with a relatively high SJR is worth more than a citation from a source with a lower SJR. A sources prestige for a particular year is shared equally over all the citations it makes in that year; this is important because it corrects for the fact that typical citation counts vary widely between subject fields. The SJR of a source in a field with a high likelihood of citing is shared