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以中国知网《中国学术期刊网络出版总库》和《中国引文数据库》为统计源,分析2006—2010年国内期刊出版专题研究高被引论文的分布规律。中国知网共收录2006—2010年国内期刊出版专题研究论文5万3 702篇,被引1万4 696篇,被引频次4万773次;前50篇高被引论文总被引频次2 019次,最高被引93次,最低28次,篇均被引40.38次。对50篇高被引论文的研究方向、源期刊及其地区、作者情况进行了统计和分析,以为出版专题的研究和编辑工作提供参考。 相似文献
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根据2008年版《中文核心期刊要目总览》,选取具有代表性的10种图书馆学核心期刊,应用中国知网（CNKI）学术文献总库中的中国引文数据库、中国期刊全文数据库,统计获得10种图书馆学核心期刊2003-2012年发表的、总被引频次≥80次的84篇高被引论文.研究分析了84篇高被引论文的期刊分布、发表年代、作者和作者的机构,以及高被引论文的研究主题等,探讨了最近10年我国图书馆学的研究热点和发展趋向. 相似文献
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对2002～2008年学科馆员研究高被引论文从年代、作者、期刊、机构、主题等方面进行统计分析.国内学科馆员研究高被引论文共134篇,总被引频次达4868次,形成了研究相关重要期刊、重要学者、重要基地,发现学科馆员研究文献处于被引高峰期,但相关研究尚处于探索发展阶段. 相似文献
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以中国学术期刊网络出版总库为信息源,统计了广西各高校图书馆发表的论文3 197篇,确定≥5被引频次的高被引论文366篇为研究样本,从被引文献的引用频次、年度分布、著者、机构、来源期刊以及研究重点、热点等方面进行分析研究,旨在揭示广西高校图书馆高被引文献的发展规律及特点,为高校图书馆从业人员开展学术研究、提高学术论文水平提供参考依据。 相似文献
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根据文献计量学的方法,本文分别从发文及被引情况、被引论文频次、被引论文作者、被引文献的期刊分布以及受各类基金资助的被引论文等几个方面,对<图书馆工作与研究>1997-2007年发文的被引情况进行统计分析. 相似文献
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收集 Web of Science（WoS）数据库的高被引撤销论文数据,分析其分布规律和引证特征。结果发现,TOP20%高被引撤销论文430篇,分布于31个国家,多学科领域最多,35种期刊>3篇。高被引撤销论文撤销时滞和撤销论文总被引频次相关性较弱（P=0.014）,和撤销前被引频次相关性较强（P=0.000）。期刊 IF和撤销论文数量、撤销论文总被引频次、撤销论文篇均被引频次正相关（P=0.017、P=0.000、P=0.005）。撤销后年均被引频次低于撤销前（P=0.000）。本研究说明 IF 高的期刊发表的撤销论文对学术界带来的负面影响较大,撤销时滞延长增加了撤销前引用,撤销起到了一定的净化效果,但是净化效果还不理想,建议国内外学者加强对撤销论文及其不良影响的关注。 相似文献
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《图书馆》(1980-2007)发文的被引分析 总被引：1，自引：0，他引：1
通过对<图书馆>(1980-2007)发文的被引情况,分别从论文被引年代分布、频次分布、被引期刊分布、高频被引论文分布、高频作者分布和基金论文被引分布六个方面进行了分析,揭示了<图书馆>研究的现状. 相似文献
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以中国知网<中国学术期刊网络出版总库(CAJD)>为统计源,对不同学科与时间段样本的统计结果表明,论文被引频次分布曲线与布拉德福文献分布曲线基本一致.选用莱姆库勒公式进行曲线拟合,但统计样本中均有约0 5%的高被引论文的被引频次高于正常的曲线分布,同时在半对数曲线中也普遍存在"格罗斯下垂",下垂误差为6%~7%.为了能够精确地得到拟合曲线,拟合时截除0 5%的高被引论文,同时对莱姆库勒公式加入修正系数,以修正"格罗斯下垂"误差.通过处理后,所有统计样本拟合均通过K-S检验.在具体分析各样本的基础上得出布拉德福系数k值具有学科特性,在论文发表7~8年内各学科k值存在明显的增长过程,k值的大小与删除0 5%的高被引论文后的最大被引频次(m'm)、被引论文的平均被引频次(c)高度相关,并拟合出了三者之间的函数关系. 相似文献
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基于论文发表的普赖斯定律,以5本高被引核心期刊《科学学研究》《科研管理》《科学学与科学技术管理》《中国科技论坛》《研究与发展管理》刊载的1141篇文献为样本,实证检验论文被引频次的影响因素。结果表明：（1）论文被引频次整体程度不高,论文被引频次对刊载时间有较强依赖性的同时,二者之间也存在非线性关系;（2）作者是否合作、论文是否定量研究、论文下载次数、期刊影响因子与论文被引频次之间显著正相关,而期刊年发文量与论文被引频次之间显著负相关,且第一作者所在机构、性别以及论文受到基金资助的数量、期刊主办方等与论文被引频次之间不存在显著相关性。本研究的主要发现是论文特征决定论文被引频次,并得出相关启示,提出研究不足及未来方向。 相似文献
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Review papers tend to be cited more frequently than regular research articles. This fact, together with the continuous increase of the share of reviews in scientific literature, can have important consequences for the measurement of individuals’ research output, usually based on citation analysis. However, studies evaluating the differences in citations of review papers compared to original research articles are almost non-existing in the literature. This paper presents a thorough analysis of the overcitation and overrepresentation of review papers in the most cited papers of the 35 largest subject categories in Science Citation Index-Expanded. Results indicate the average citations received by reviews depends largely on the research area considered, varying from 1.34 to 6.74 times the citations received by original research articles (average value is 2.95). Correlated with this overcitation, there is an important overrepresentation of reviews in the most cited papers, this overrepresentation being greater when the most highly cited papers are considered, i.e. 0.05% and 0.1% most cited papers, where the share of reviews have increased from 16 to 18% in 1990 to around 40% in 2010. Interestingly, the overcitation and overrepresentation in the most cited papers is more important in the areas with the lowest shares of reviews in total publications. 相似文献
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p 指数运用于人才评价的有效性实证研究 总被引：2，自引：0，他引：2
h指数用于高发文、高引用的学者评价是有效的,但对低发文、高引用的学者进行评价存在缺陷,且数值易于雷同,不易区分。p指数在学者研究绩效评价方面具有同h指数相一致的维度,它不仅考虑学者的被引次数(C),而且考虑学者的研究质量指标——平均被引率(C/N)。以图书情报与文献学科领域49位专家为例,对比分析专家的发文量(N)、被引次数(C)、平均被引率、专家h指标、g指数、p指数,并进行相关性分析。结论:p指数优于现有的h指数、g指数,更具有评价的合理性,应在更大范围内进一步使用。 相似文献
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Marek Kosmulski 《Journal of Informetrics》2010,4(3):257-264
Scientific papers are usually assessed by a number of direct citations. The number of citations received by direct citations (2nd generation citations) has been considered as an alternative criterion of evaluation. Such an approach overrates the papers, which received citation(s) in one or in a few very highly cited papers. Hirsch-type approach to the 2nd generation citations suggested by Schubert was used to combine the impact and quantity of 1st generation citations into one number. 相似文献
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Contributing factors to long‐term citation count in marine and freshwater biology articles 
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下载免费PDF全文 Researchers have investigated factors thought to affect the total number of citations in various academic disciplines, and some general trends have emerged. However, there are still limited data for many fields, including aquatic sciences. Using papers published in 2003–2005 (n = 785), we investigated marine and freshwater biology articles to identify factors that may contribute to the probability of citation and for cumulative citation counts over 10 years. We found no relationships with probability of citation; however, we found evidence that for those that were cited at least once, cumulative citations were related to several factors. Articles cited by books received more citations than those never cited by books, which we hypothesized to be indicative of the impact an article may have in the field. We also found that articles first cited within 2 years of publication received more cumulative citations than those first cited after 2 years. We found no evidence that self‐citation (as the first citation) had a significant effect on total citations. Our findings were compared with previous studies in other disciplines, and it was found that aquatic science citation patterns are comparable to fields in science and technology but less so to humanities and social sciences. 相似文献
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《Journal of Informetrics》2014,8(4):863-872
Delayed recognition is a concept applied to articles that receive very few to no citations for a certain period of time following publication, before becoming actively cited. To determine whether such a time spent in relative obscurity had an effect on subsequent citation patterns, we selected articles that received no citations before the passage of ten full years since publication, investigated the subsequent yearly citations received over a period of 37 years and compared them with the citations received by a group of papers without such a latency period. Our study finds that papers with delayed recognition do not exhibit the typical early peak, then slow decline in citations, but that the vast majority enter decline immediately after their first – and often only – citation. Middling papers’ citations remain stable over their lifetime, whereas the more highly cited papers, some of which fall into the “sleeping beauty” subtype, show non-stop growth in citations received. Finally, papers published in different disciplines exhibit similar behavior and did not differ significantly. 相似文献
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基于被引次数的引文分析无法直接揭示论文的研究内容,利用关键词或从标题、摘要和全文中抽取的主题词很难客观反映论文的被引原因。本文以碳纳米管纤维研究领域的高被引论文为研究对象进行引文内容抽取和主题识别,经人工判读验证：基于引文内容分析的高被引论文识别的核心主题能够较好地揭示高被引论文的被引原因（引用动机）,而且与论文的研究内容相符合;与基于全文、基于标题和摘要的主题识别相比,在引文内容分析基础上识别的主题具有更好的主题代表性,能够有效揭示被引文献的研究内容,是对原文相关信息的重要补充。本文的实验表明基于引文内容分析的高被引论文主题识别是可行而且有效的。图4。表4。参考文献31。 相似文献
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We address issues concerning what one may learn from how citation instances are distributed in scientific articles. We visualize and analyze patterns of citation distributions in the full text of 350 articles published in the Journal of Informetrics. In particular, we visualize and analyze the distributions of citations in articles that are organized in a commonly seen four-section structure, namely, introduction, method, results, and conclusions (IMRC). We examine the locations of citations to the groundbreaking h-index paper by Hirsch in 2005 and how patterns associated with citation locations evolve over time. The results show that citations are highly concentrated in the first section of an article. The density of citations in the first section is about three times higher than that in subsequent sections. The distributions of citations to highly cited papers are even more uneven. 相似文献
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机械、仪表工业类核心期刊的引文分析 总被引：10，自引：0，他引：10
对《中文核心期刊要目总览》收录的机械、仪表工业类 2 5种核心期刊中 1998年所载论文的引文进行调查统计。对平均载文量、引文的数量、文献类型、语种分布、年代分布和各种中文文献被引频次等有关信息进行定量分析 ,客观地对该类 2 5种核心期刊的引文水平和一般规律进行综合评价 相似文献