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在学术期刊的计量评价指标体系中,影响因子和总被引频次是2项最为重要的指标,占据了较高的权重;但是,期刊办刊历史长短、发表论文多少、出版周期长短、学科人群多少等都会影响总被引频次的大小.尤其是一些发表大量低水平论文的期刊,依靠论文数量众多,依然可以获得较高的总被引频次;但其影响因子却很低,论文质量很差.如何客观甄别这类论文数量巨大而质量效益不高的期刊？本文提出一个全新的衡量期刊量效关系的指标——期刊量效指数(journal mass index,JMI).“量”指期刊的发文量,“效”则引入期刊影响因子.JMI定义为某刊影响因子与该刊影响因子对应的发文量的比值,意义是平均每篇文献对该刊影响因子的贡献值.JMI能客观反映同一个学科中量大质低的期刊的“臃肿程度”.在《中国学术期刊影响因子年报(2016版)》中,JMI被应用于修正期刊影响力指数(CI)排序,使CI排序更准确地反映学术期刊的学科影响力排名.实践证明,JMI是一个对学术期刊量效关系进行客观评判的有用的计量指标. 相似文献
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10种国际权威科技期刊影响因子构成特征及其启示 总被引：1，自引：0，他引：1
利用Web of Science(WoS)数据库和Journal Citation Reports(期刊引证报告,JCR)的引证分析功能,从3个方面探讨10种国际权威期刊影响因子的结构特征:1)自引对影响因子的贡献;2)不同类型文献对影响因子的贡献;3)高被引论文对影响因子的贡献。结果显示:10种国际权威期刊自引对其影响因子的贡献率均较低;研究论文(article)和综述(review)对影响因子的贡献率均在80%以上,述评(editorial)、信稿(letter)和科技新闻(news item)对科技期刊影响因子的贡献不容忽视,其他类型的文献对影响因子贡献较小;各期刊高被引论文对影响因子的贡献率普遍较高。提示:增加期刊自引在一定程度上可以提高影响因子,但依靠增加自引来提高期刊实际影响力几乎是不可能的;科学规划期刊的文献类型,多发表一些述评、信稿和科技新闻等类型的文献对提高期刊的影响因子和影响力是很有价值的;通过引文分析寻找相关学科领域的研究前沿和热点,加强高被引论文的选题策划是提高科技期刊影响因子的有效方法。 相似文献
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学位论文数字出版对其析出内容所形成的文章在期刊的刊出效果会产生影响.为在期刊编辑工作中对疑似学位论文再发表稿件进行适当处理,本文首先对该类稿件进行详细分析分类,从编辑视角讨论了如何看待该类稿件涉及的侵权问题,然后调查了与学位论文相似的已刊出文章的情况和刊出效果,指出期刊文章有不同于学位论文的价值所在,稿件的内容和题目比是否获得首发权更重要,最后探讨了如何处理在编辑工作各个环节中发现的疑似学位论文再发表稿件,并提出对此类稿件应适度接收. 相似文献
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文章对我国6个学科的社科学术期刊3类评价指标及其相互间的相关性进行分析。研究表明:分学科而言,3个特征指标之间相关性不明显;3个转载指标间具有较强的相关关系,特别是综合指数和转载量、转载率之间具有强相关性;除了复合即年指标外,其他引用指标间均呈现出一定程度的正相关关系,影响力指数与其他引用指标间呈现出较强的相关关系,复合影响因子、复合他引影响因子、5年复合影响因子两两间呈强相关关系;期刊特征指标与转载指标、引用指标之间的相关性均不显著。转载指标与引用指标间具有中度的相关关系。评价体系不宜同时使用正相关度较强的多项指标,或者应适当控制其总权重;期刊选文时不应太注重基金论文比、平均引文数等特征指标,应注重论文的学术质量。总体上看,高等院校学报和专业社科期刊相比,3类评价指标之间的相关性差异不明显,高等院校学报人不必因为影响力的原因而纠结是否进行专业化发展,而应该根据自身资源条件选择发展策略。 相似文献
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试析影响因子与科技期刊评价 总被引：5，自引：0，他引：5
影响因子是期刊评价的重要指标。介绍了几种影响因子的概念及计算方法，并探讨了电子期刊的特殊评价指标。通过分析影响因子在期刊质量评价中存在的局限性，指出使用影响因子评价期刊时应注意的问题。 相似文献
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研究我国计算机科学领域1996-2006年国际论文的期刊分布,其中包括发表我国计算机科学领域国际论文期刊的数量、影响因子、被引频次和国别的分布,并据此分析提高我国计算机科学领域期刊质量的方法与措施。 相似文献
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通过分析比较我国医学核心期刊、统计源期刊和一般期刊的出版参数和主要文献计量学指标,为医学中文核心期刊的编辑出版策划提供参考依据.结果显示: 中文核心期刊的论文平均长度、有英文摘要论文比、影响因子、总被引频次和基金论文比均显著高于统计源期刊和一般期刊.而中文核心期刊的出版频率、年总页码数显著高于统计源期刊,但低于一般期刊.在办刊实践中,必须采取综合措施,根据自身情况合理设置出版周期,在保证稿件质量的前提下适当扩大信息容量,多发表学术水平高的研究原著,论文尽可能附英文摘要,刊登论文适当向基金论文倾斜,以提高期刊的学术水平和影响力. 相似文献
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论用期刊影响因子评价论文作者的逻辑前提与局限性 总被引：2，自引：0，他引：2
目前,用期刊的影响因子取代论文的实际引用次数来评价作者或科研成果,是一个有争议的问题.从影响因子的概念、应用于评价的前提条件和其局限性等方面入手,分析采用期刊影响因子来评价论文作者可能存在的问题,为合理地将影响因子作为科研绩效评价工具提供参考. 相似文献
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Isaias Arriola‐Quiroz Walter H. Curioso MD MPH Maria Cruz‐Encarnacion Oscar Gayoso MD 《Health information and libraries journal》2010,27(2):148-154
Background: Many medical schools require a student thesis before graduation. Publishing results in a peer‐reviewed journal could be an indicator of scientific value and acceptability by the scientific community. The publication pattern of theses published by medical students in Peru is unknown. The aim of this study was to assess the characteristics and publication pattern of theses in biomedical‐indexed journals conducted by medical students in a university with the highest research output in Peru. Methods: Data from registered theses between 2000 and 2003 were obtained from the university library. Publication of theses in biomedical journals was assessed in 2008 by a search strategy using PubMed, Google Scholar, LILACS, LIPECS and SciELO. Results: Four hundred and eighty‐two medical theses were registered between 2000 and 2003; 85 (17.6%) were published in biomedical‐indexed journals. Of the published theses, 28 (5.8%) were published in MEDLINE‐indexed journals, 55 (11.4%) in SciELO‐indexed journals, 61 (12.6%) in LILACS‐indexed journals and 68 (14.1%) in LIPECS‐indexed journals. Most of the published theses (80%) were in Spanish and published in Peruvian journals; and 17 theses (20%) were published in foreign journals (all of them indexed in MEDLINE). In addition, 37 (43.5%) belong primarily to internal medicine, and 24 (28.2%) belong primarily to infectious diseases. Medical students were first authors in 71 (83.5%) of the articles. Conclusion: In this study, most of the published theses were in Spanish, published in local journals and indexed in LIPECS. The percentage of published theses in biomedical journals at this university is comparable with others coming from developed countries. 相似文献
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论文运用文献计量学方法,以江苏高职高专图书馆2005-2010年的754篇科研论文为基础,对论文的数量、核心论文量、论文被引情况、论文作者的机构与合作情况及论文主题进行统计分析。结果显示,江苏高职高专图书馆的科研呈发展趋势,发文量逐年递增,但总体论文质量不高,科研地区差异性明显,论文主题较雷同,缺乏创新性和新颖性。 相似文献
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开放存取期刊学术质量评价(二)——基于影响因子视角的分析 总被引：3，自引：0，他引：3
依据影响因子这一评价期刊学术质量的最重要指标,从时间、学科和地域三个维度对2006—2010年收录的DOAJ期刊进行系统分析,旨在从影响因子视角考察开放存取期刊的学术质量状况。 相似文献
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Janice E. Cox 《资料收集管理》2013,38(3):219-234
This study, conducted at the Indiana University School of Dentistry Library using citation analysis, examined graduate dental student theses citations to determine the nature of materials cited, journal ownership, journal citation frequency, and citation age distribution. The results were compared to other scientific discipline citation analyses. Study results indicated that for the period studied, masters dental students, like medical and science students, cited recently published scholarly dental journal literature. The majority of the journals cited were owned by Indiana University system libraries. Areas for further research include faculty resource usage, e-journal impact, and interdisciplinary resource use. 相似文献
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《Journal of Informetrics》2023,17(3):101429
Despite the recent moving towards open access trend in the academic community, both restricted and open access journals continue to coexist. New journals need to choose their journal types (open versus restricted access), while the incumbent journals may change their journal types. To better understand how the academic community is shaped by journals’ choices of journal types, we constructed a game-theoretical model of journal competition with endogenous journal qualities and journal types. We found that journals’ equilibrium quality and types vary by article processing charge (APC) and journals’ preference for quality. Compared to the case that both journals are open access, a competition among journals of different types leads to higher journal quality standards chosen in equilibrium when APC is modest. Therefore, in the academic community where the research quality is measured by the highest quality of the journals therein, journals of different types guarantee a good degree of knowledge diffusion with a high quality. 相似文献
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Journal weighted impact factor: A proposal 总被引：3，自引：0，他引：3
The impact factor of a journal reflects the frequency with which the journal's articles are cited. It is the best available measure of journal quality. For calculation of impact factor, we just count the number of citations, no matter how prestigious the citing journal is. We think that impact factor as a measure of journal quality, may be improved if in its calculation, we not only take into account the number of citations, but also incorporate a factor reflecting the prestige of the citing journals relative to the cited journal. In calculation of this proposed “weighted impact factor,” each citation has a coefficient (weight) the value of which is 1 if the citing journal is as prestigious as the cited journal; is >1 if the citing journal is more prestigious than the cited journal; and is <1 if the citing journal has a lower standing than the cited journal. In this way, journals receiving many citations from prestigious journals are considered prestigious themselves and those cited by low-status journals seek little credit. By considering both the number of citations and the prestige of the citing journals, we expect the weighted impact factor be a better scientometrics measure of journal quality. 相似文献
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Clinical psychology has received little attention as a subject in health sciences library collections. This study seeks to demonstrate the relative importance of the monographic literature to clinical psychology through the examination of citations in graduate student theses and dissertations at the Fordham Health Sciences Library, Wright State University. Dissertations and theses were sampled randomly; citations were classified by format, counted, and subjected to statistical analysis. Books and book chapters together account for 35% of the citations in clinical psychology dissertations, 25% in nursing theses, and 8% in biomedical sciences theses and dissertations. Analysis of variance indicates that the citations in dissertations and theses in the three areas differ significantly (F = 162.2 with 2 and 253 degrees of freedom, P = 0.0001). Dissertations and theses in biomedical sciences and nursing theses both cite significantly more journals per book than the dissertations in clinical psychology. These results support the hypothesis that users of clinical psychology literature rely more heavily on books than many other users of a health sciences library. Problems with using citation analyses in a single subject to determine a serials to monographs ratio for a health sciences library are pointed out. 相似文献