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现行期刊的评价指标以正向评价指标为主。为探究期刊的反向评价指标,研究与高被引论文相对应的零被引论文的占比情况与期刊影响力的关系,基于Web of Knowledge数据库中的经济学学科发文量位居前10位的期刊所发表的论文在2-6年后的零被引率,并通过相关分析探究其与JCR 2012年期刊评价指标的相关关系,包括影响因子、总被引频次、5年影响因子和h指数等指标,并探究其变化趋势与时间窗口间的关系。研究结果表明：期刊零被引率用于期刊反向评价是合理的,对于经济学这种综合实力较强的学科,时间窗口定为2-3年更为合理,随着年限的变长,论文零被引率与期刊的综合实力的关系越来越弱。 相似文献
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Academic librarians tend to publish in traditional “library” journals rather than journals directed at other academic disciplines, thereby missing the opportunity to inform and educate a key audience. This article alerts librarians to publishing opportunities in discipline-specific academic journals in the Arts & Humanities, Sciences, and Social Sciences, both as a means of promoting information literacy (IL) and effecting outreach to faculty. Selection criteria are defined and discussed. The results of the study are presented by discipline in table format with data on each journal including publisher, affiliation, publication frequency, review time, acceptance rate, and ranking indicators. 相似文献
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Thirty‐six ophthalmology journals indexed by the Science Citation Index (SCI) in 2003 were selected to study the role of the ‘papers cited rate’ in scientific journal evaluation. The 2‐year, 3‐year, 5‐year, 8‐year, and 10‐year cited rates of these papers were calculated to analyze statistically the correlations with impact factor, 5‐year impact factor, immediacy index, eigenfactor score, article influence score, and total cites. The results of questionnaires sent to 8,525 ophthalmologists were used to analyse the correlations between the papers cited rates for different years and traditional bibliometric indicators. The results showed that eigenfactor score and total cites were better than other indicators, and impact factor was better than the 5‐year impact factor. The 2‐year and 3‐year cited rates of papers were reasonable for evaluating science journals, and the 2‐year cited rate was better than the 3‐year cited rate. The 5‐year (and more than 5 years) cited rates were not significant in evaluating science journals. 相似文献
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篇均来源期刊标准影响(SNIP)为荷兰学者Moed教授于2010年提出的全新期刊评价指标,旨在对不同主题领域的期刊影响力进行评价,为验证这一评价指标在期刊评价实践中的效用,利用SPSS18.0数据统计分析软件对Scopus数据库中24种外文期刊的SNIP与SJR、h指数以及影响因子进行实证对比分析;以CSSCI为来源数据库统计分析国内6种图书情报学期刊的IF值与SNIP值。分析结果证明,SNIP与其他3个指标之间存在较强的相关性,在期刊评价实践中具有可行性。 相似文献
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Ka-wai Fan 《Journal of the Medical Library Association》2015,103(3):148-151
Publishing articles in a prestigious journal is a golden rule for university professors and researchers nowadays. Impact factor, journal rank, and citation count, included in Science Citation Index managed by Thomson Reuters Web of Science, are the most important indicators for evaluating the quality of academic journals. By listing the journals encompassed in the “Integrative and Complementary Medicine” category of Science Citation Index from 2003 to 2013, this paper examines the publication trends of journals in the category. The examination includes number, country of origin, ranking, and languages of journals. Moreover, newly listed or removed journals in the category, journal publishers, and open access strategies are examined. It is concluded that the role of journal publisher should not be undermined in the “Integrative and Complementary Medicine” category. 相似文献
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[目的/意义]探讨影响altmetrics覆盖率的因素,为altmetrics在学术评价中的合理使用奠定基础。[方法/过程]基于Web of Science、Altmetric.com以及Mendeley,以5个学科1996-2015年间发表的所有期刊论文为分析对象,探讨学科领域、出版年份、来源期刊、国别、语种5个因素对altmetrics覆盖率的影响。[结果/结论]不同altmetrics指标的覆盖率不同,Mendeley覆盖率最高,Twitter其次,而大多数指标覆盖率很低;在将altmetrics应用于期刊评价时,有必要合理鉴别和排除期刊推广策略导致的高覆盖率现象;以上5个因素均会导致期刊论文的altmetrics覆盖率差异,因此在应用altmetrics时,需要考虑到被评价对象的属性特征,必要时考虑altmetrics在这些影响因素上的标准化。 相似文献
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为了验证《中国学术期刊(光盘版)》电子杂志社提出的新型期刊评价指标——期刊影响力指数(Journal Clout Index,CI)的科学性,首先采用JCR数据分析影响因子(IF)与5年影响因子(IF5)、IF与即年指标(IM)、IF与总被引频次(TC)之间的相关性,得出结论:IF、IF5、IM是相关性显著的同类指标,IF与TC的相关性较弱;因而认为,TC和IF是可用来评价期刊影响力的主要指标,基于这2个指标的综合评价指标——期刊影响力指数(CI)具有合理性.进一步实证分析了CI这一综合指标对国际期刊的排序结果比采用单一指标——影响因子(IF)排序更符合实际经验认识. 相似文献
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Katherine G. Akers 《Journal of the Medical Library Association》2016,104(2):146-149
Because they do not rank highly in the hierarchy of evidence and are not frequently cited, case reports describing the clinical circumstances of single patients are seldom published by medical journals. However, many clinicians argue that case reports have significant educational value, advance medical knowledge, and complement evidence-based medicine. Over the last several years, a vast number (∼160) of new peer-reviewed journals have emerged that focus on publishing case reports. These journals are typically open access and have relatively high acceptance rates. However, approximately half of the publishers of case reports journals engage in questionable or “predatory” publishing practices. Authors of case reports may benefit from greater awareness of these new publication venues as well as an ability to discriminate between reputable and non-reputable journal publishers. 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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[目的/意义] 研究Altmetrics指标的主要特征及其与传统文献计量指标的相关性,以及它们随时间的演化情况;同时,基于Altmetrics指标全面评价学术论文的社会影响力和学术影响力,对于发展和完善Altmetrics计量系统至关重要。[方法/过程] 以2014-2016年Altmetric Top 100论文为样本,对每年的高Altmetrics指标论文的来源期刊、学科分布、获取方式、作者地域及研究机构分布进行统计分析,并讨论这些论文的社会影响力,同时对论文的Altmetric分数与其Web of Science上的被引频次进行相关性分析,研究相关性随时间的动态演化。[结果/结论] 研究结果表明,高Altmetrics指标论文主要来源于一些高影响因子期刊,其学科主要集中于医疗健康与生物科学,论文作者主要来自于欧美发达国家的高水平研究机构,且高Altmetrics指标论文中开放及自由获取的比例逐年增加;Altmetric分数能够定量地反映学术论文在社交和新闻媒体上被公众关注的程度,从而在一定程度上体现出学术论文的社会影响力;高Altmetrics指标论文的Altmetric分数与其被引频次存在一定正相关,表明高Altmetrics指标论文同时具有较高的学术影响力。 相似文献
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引文评价新指标SNIP旨在评价不同主题领域期刊影响力。从理论上对比分析SNIP与IF、h指数、SJR指标值的原理、关系,各自的优缺点以及它们的应用区别。结果表明,理论上SNIP与其他3个指标存在关联性,具有一定的优势,可用于期刊评价实践中。 相似文献
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G D Byrd 《Bulletin of the Medical Library Association》1999,87(3):312-321
OBJECTIVES: This 1990-1991 study explored the relationship between the size of health sciences library journal collections and the number of different journals cited by medical school faculty in departments of biochemistry and medicine. METHODS: Two regression equations, including variables associated with a national stratified sample of 622 faculty who published articles during those two years, were used to explore factors correlated with variations in faculty use of the journal literature and faculty publishing productivity. RESULTS: Results suggest that, after controlling for other variables in the models, neither the number of different journals those faculty cited, nor the number of articles they published, had statistically significant correlations with the number of journals in the health sciences library collection. CONCLUSION: The traditional view that the size of an academic health sciences library's journal collection is a good measure of how well that library is positioned to support faculty research may not be entirely accurate. 相似文献
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《Journal of Informetrics》2014,8(4):840-853
A similarity comparison is made between 120 journals from five allied Web of Science disciplines (Communication, Computer Science-Information Systems, Education & Educational Research, Information Science & Library Science, Management) and a more distant discipline (Geology) across three time periods using a novel method called citing discipline analysis that relies on the frequency distribution of Web of Science Research Areas for citing articles. Similarities among journals are evaluated using multidimensional scaling with hierarchical cluster analysis and Principal Component Analysis. The resulting visualizations and groupings reveal clusters that align with the discipline assignments for the journals for four of the six disciplines, but also greater overlaps among some journals for two of the disciplines or categorizations that do not necessarily align with their assigned disciplines. Some journals categorized into a single given discipline were found to be more closely aligned with other disciplines and some journals assigned to multiple disciplines more closely aligned with only one of the assigned disciplines. The proposed method offers a complementary way to more traditional methods such as journal co-citation analysis to compare journal similarity using data that are readily available through Web of Science. 相似文献