共查询到20条相似文献，搜索用时 62 毫秒
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引文中伪引和漏引的机制分析 总被引：13，自引：0，他引：13
引文中伪引和漏引的机制分析叶新明ＡＢＳＴＲＡＣＴＡｆｔｅｒｄｉｓｃｕｓｓｉｎｇｆａｌｓｅｃｉｔａｔｉｏｎｓａｎｄｍｉｓｓｉｎｇｃｉｔａｔｉｏｎｓａｓｗｅｌａｓｔｈｅｉｒｒａｔｅｓａｎｄｒｅａｓｏｎｓ,ｔｈｅａｕｔｈｏｒｐｒｏｐｏｓｅｓｓｏｍｅｍｅｔｈ... 相似文献
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论图书馆改革方案的设计与实施 总被引：2，自引：0，他引：2
论图书馆改革方案的设计与实施郭向东Ａｂｓｔｒａｃｔ：Ａｌｉｂｒａｒｙｒｅｆｏｒｍｐｒｏｇｒａｍｍｅｓｈｏｕｌｄｂｅｑｕａｌｉｆｉｅｄａｓｈａｖｉｎｇｆｕｎｃｔｉｏｎｓｏｆｇｕｉｄａｎｃｅ，ｒｅａｄｊｕｓｔｍｅｎｔａｎｄｅｘｃｉｔａｔｉｏｎ．Ｔｈｅｉｍ... 相似文献
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社科文献中的反驳引文研究 总被引：4，自引：0，他引：4
社科文献中的反驳引文研究梁春阳ＡＢＳＴＲＡＣＴＮｅｇａｔｉｖｅｃｉｔａｔｉｏｎｓａｒｅｕｓｅｄｔｏｎｅｇａｔｅｏｒｃｒｉｔｉｃｉｓｅｏｔｈｅｒｓ＇ｔｈｅｏｒｉｅｓｏｒｃｌａｉｍｓ．Ｔｈｅａｕｔｈｏｒｔｒｉｅｓｔｏｈａｖｅａｔｈｅｏｒｅｔｉｃａｌｄｉｓ... 相似文献
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《中国图书馆学报》被引调查与分析 总被引：23，自引：0，他引：23
《中国图书馆学报》被引调查与分析王惠翔Ａｂｓｔｒａｃｔ：Ｂａｓｅｄｏｎａｎｉｎｖｅｓｔｉｇａｔｉｏｎｏｆ２３７７６ｃｉｔａｔｉｏｎｓｏｆｌｉｂｒａｒｙｓｃｉｅｎｃｅｐｅｒｉｏｄｉｃａｌｓ,ｔｈｅ＂ＪｏｕｒｎａｌｏｆｔｈｅＬｉｂｒａｒｙＳｃｉｅｎｃｅｉ... 相似文献
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美国《大学与研究图书馆》评介 总被引：1，自引：0，他引：1
美国《大学与研究图书馆》评介韩圣龙，张春波Ａｂｓｔｒａｃｔ：１２３８ａｒｔｉｃｌｅｓｐｕｂｌｉｓｈｅｄｉｎｔｈｅｊｏｕｒｎａｌ，１９８３－１９９３，８９１４ｃｉｔａｔｉｏｎｓａｎｄ８２２ａｕｔｈｏｒｓａｒｅｓｔａｔｉｓｔｉｃａｌｌｙａｎａｌｙｚｅｄａ... 相似文献
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《中国图书馆学报》1989～1992年发文作者及引文的统计分析 总被引：13，自引：0，他引：13
《中国图书馆学报》１９８９～１９９２年发文作者及引文的统计分析李亚东Ａｂｓｔｒａｃｔ：Ｔｈｅａｕｔｈｏｒａｎａｌｙｓｅｓｓｔａｔｉｓｔｉｃａｌｌｙｔｈｅｏｕｔｇｏｉｎｇｐａｐｅｒｓ，ａｕｔｈｅａｒｓａｎｄｃｉｔａｔｉｏｎｓｏｆｔｈｅ＂Ｊｏｕｒｎａｌｏ... 相似文献
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图书馆学期刊互引系统的结构模型 总被引：2，自引：0，他引：2
图书馆学期刊互引系统的结构模型党亚茹ＡＢＳＴＲＡＣＴＷｉｔｈｔｈｅｍｅｔｈｏｄｏｌｏｇｙｏｆｓｙｓｔｅｍｓｅｎｇｉｎｅｅｒｉｎｇ，ｔｈｅａｕ－ｔｈｏｒｐｒｏｐｏｓｅｓａｓｔｒｕｃｔｕｒａｌｍｏｄｅｌｆｏｒａｓｙｓｔｅｍｏｆｃｉｔａｔｉｏｎｓｉｎｐｅｒ... 相似文献
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基于元搜索引擎的中文数据库引文分析系统 总被引：2，自引：0，他引：2
分析现有中文引文数据库的优缺点，针对其存在的问题，利用元搜索引擎的原理，提出一种改进的中文数据库引文分析系统模型，并详细论述该系统的各项功能。 相似文献
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Yunrong Li Filippo Radicchi Claudio Castellano Javier Ruiz-Castillo 《Journal of Informetrics》2013,7(3):746-755
Wide differences in publication and citation practices make impossible the direct comparison of raw citation counts across scientific disciplines. Recent research has studied new and traditional normalization procedures aimed at suppressing as much as possible these disproportions in citation numbers among scientific domains. Using the recently introduced IDCP (Inequality due to Differences in Citation Practices) method, this paper rigorously tests the performance of six cited-side normalization procedures based on the Thomson Reuters classification system consisting of 172 sub-fields. We use six yearly datasets from 1980 to 2004, with widely varying citation windows from the publication year to May 2011. The main findings are the following three. Firstly, as observed in previous research, within each year the shapes of sub-field citation distributions are strikingly similar. This paves the way for several normalization procedures to perform reasonably well in reducing the effect on citation inequality of differences in citation practices. Secondly, independently of the year of publication and the length of the citation window, the effect of such differences represents about 13% of total citation inequality. Thirdly, a recently introduced two-parameter normalization scheme outperforms the other normalization procedures over the entire period, reducing citation disproportions to a level very close to the minimum achievable given the data and the classification system. However, the traditional procedure of using sub-field mean citations as normalization factors yields also good results. 相似文献
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《Journal of Informetrics》2014,8(4):972-984
The distribution of cumulative citations L and contributed citations Lf to individual multiauthored papers published by selected authors working in different scientific disciplines is analyzed and discussed using Langmuir-type function: yn = y0[1 − αKn/(1 + Kn)], where yn denotes the total number of normalized cumulative citations ln* and normalized contributed citations lnf* received by individual papers of rank n, y0 is the maximum value of yn when n = 0, α ≥ 1 is an effectiveness parameter, and K is the Langmuir constant related to the dimensionless differential energy Q = ln(KNc), with Nc as the number of papers receiving citations. Relationships between the values of the Langmuir constant K of the distribution function, the number Nc of papers of an individual author receiving citations and the effectiveness parameter α of this function, obtained from analysis of the data of rank-size distributions of the authors, are investigated. It was found that: (1) the quantity KNc obtained from the real citation distribution of papers of various authors working in different disciplines is inversely proportional to (α − 1) with a proportional constant (KNc)0 < 1, (2) the relation KNc = (KNc)0/(α − 1) also holds for the citation distribution of journals published in countries of two different groups, investigated earlier (Sangwal, K. (2013). Journal of Informetrics, 7, 487–504), and (3) deviations of the real citation distribution from curves predicted by the Langmuir-type function are associated with changing activity of sources of generation of items (citations). 相似文献
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目前引文分析已成为文献计量学的主要研究内容之一,但少有对其存在的问题进行分析.本文从引文分析理论(基础理论和引用动机)的不完善,引用过程中存在的不足,引文分析方法、工具和数据库的缺陷,引文分析应用与实践(科学评价和科学交流)的局限四个方面较系统地总结引文分析存在的问题及原因.目前应该以谨慎的态度看待引文分析,对其方法和结果作客观评价,在充分了解其优缺点的基础上进行完善与发展. 相似文献
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链接分析与引文分析的比较 总被引：13，自引：1，他引：12
网络影响因子沿用了期刊影响因子对引文分析的基本思路,但作为链接分析的指标,用于网络环境中的质量评价是不可靠的。可以根据Pagerank算法提出用于论文质量评价的Pagerank算法;可以根据引文衰减系数提出"链接衰减系数"和"平均链接时距"用于研究网页的老化规律。理想的链接分析工具应当是一种专用搜索引擎。 相似文献