共查询到19条相似文献，搜索用时 437 毫秒
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2008-2013年中外科技期刊载文与引证指标分析 总被引：1，自引：0，他引：1
基于2008-2013年Thomson Reuters发布的Journal Citation Reports (JCR)及中国科学技术信息研究所发布的《中国科技期刊引证报告》(CJCR),比较分析中外科技期刊载文量、总被引频次、影响因子、即年指标等各主要文献计量指标的变化.结果显示,我国被SCI收录期刊的数量和影响力指标近年来总体上呈上升态势,但年平均载文量却稍有下降,以中文期刊为主的CJCR收录期刊数量和年平均载文量均呈停滞增长甚至下降的趋势.这可能表明我国科技期刊的稿源竞争力有所下降. 相似文献
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利用文献计量指标提高科技期刊质量 总被引：2，自引：0，他引：2
0引言衡量科技期刊学术、业务水平的标准有多种,包括载文量、文摘率、流通率(借阅率)、引文率、专家评审等。将这些标准量化为文献计量指标[1],借助文献计量学的统计数据可以使编辑部能够快速地对自己所办的科技期刊进行综合评价,了解期刊在本学科中所处的地位,及时调整编辑和出版策略。1被引指标与被引情况相关的文献计量指标有:总被引频次、Web即年下载率、影响因子(IF)、即年指标、他引率、自引率、被引半衰期、h指数。这些指标的统计数据均针对期刊影响力和期刊学术水平进行评估,反映了期刊的有用性(被利用程度)和显示度。总被引频次… 相似文献
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利用中国引文数据库的引文检索功能,统计了<档案管理>2006年-2008年载文被引用情况.根据统计结果,从被引篇数、被引频次、被引论文年份、被引论文作者、被引作者机构、被引作者地区、引用期刊等方面进行分析,并计算出该刊2006年～2008年的自引率(24.24%)和各年份的即年指标(分别为0.0445、0.0130、0.0307)、影响因子(分别为0.1207、0.2439、0.2422),客观地评价了<档案管理>的学术水平和办刊质量及其在我国档案学研究领域中的学术地位和影响力. 相似文献
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本刊讯2007年1月,科学技术文献出版社出版了中国科学技术研究所和万方数据股份有限公司编写的《2006年版中国期刊高被引指数》。现将其中部分出版类期刊的高被引指数摘编如下,供相关人员研究参考。刊名载文总数总频被次引5年因影子响被引率被引累积50指%数文章被引累积50指%数作者被构引累积50指%数机单高篇被文引次章最数文学章科分高布被数引编辑学报80711311.4010.654127.5088.8859.901486中国科技期刊研究105710821.0240.532130.0086.6754.13223编辑学刊717860.1200.10331.0028.009.253编辑之友6513270.5020.32656.2546.7515.33813出版… 相似文献
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以2008—2010年三年的《中国科技期刊引证报告(核心版)》中影响因子、总被引频次、即年指标、他引率、基金论文比和载文量共6项指标为依据,赋于各项指标不同的权重并作归一化处理,综合评价2007—2009年12种儿科医学类核心期刊的学术影响力。《中华儿科杂志》的学术影响力综合指标始终排名第一,同时《实用儿科临床杂志》、《中国实用儿科杂志》和《临床儿科杂志》在同类期刊中也显示了较强的学术影响力。采用多指标数据归一化加权法评价学术期刊的学术影响力更加全面、公正、准确,可作为期刊评优、分级的有效方法。 相似文献
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文章通过Scopus数据库和SciVal分析平台,统计分析首批入选“中国科技期刊卓越行动计划”高校自然科学学报的载文量、总被引频次、篇均被引频次、高被引论文比、零被引论文比、中国学者引用贡献率、CiteScore及其百分位、发文的专业化程度等指标,定量展示入选的高校自然科学学报的国际影响力现状及差异。研究结果表明,入选的中文学报国际影响力有限,不宜过分强调国际化;入选的英文学报国际影响力有很大提升空间,提倡立足于本土的国际化;中文和英文学报均应凸显专业化特征,坚持高质量发展。 相似文献
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《Journal of Informetrics》2022,16(3):101315
In 2021, Clarivate published a new version of the Journal Citation Reports (JCR) including a new indicator. The Journal Citation Indicator (JCI) is a new field-normalized metric at journal-level, which is calculated by averaging the Category Normalized Citation Impact (CNCI) of the journal's articles and reviews published in the preceding three-year period. Unlike the Journal Impact Factor (JIF), it is also calculated for the journals of the Arts & Humanities Citation Index (AHCI) and the Emerging Sources Citation Index (ESCI), which are now included in the JCR. To better understand this new indicator, this article analyses its main statistical characteristics in comparison with the other JCR indicators using all JCR journals and categories. The results highlight the similarities between the JCI and JIF, with a high Pearson correlation (0.853) and a similar distribution. This correlation is also high and homogeneous in the different categories, both for Science and Social Sciences. The JCI is therefore a perfect complement to the JIF, as well as representing an alternative to resolve the well-known problems of the JCR. 相似文献
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This paper focuses on a fresh and fair way to determine a ranking of science journals according to the “number of citations-to
and articles published,” data used by SCI Journal Citation Reports of ISI to determine journal ranking by “impact factor.”
Impact is considered a latent variable defined by a set of items (citations and articles published). The theoretical background
is Item Response Theory, which suggests that, if we can understand how each item in a set of items operates with an object,
then we can estimate a measure for the object. The Rasch model is the most common formulation of that theory. This technique
is here applied to the citations and articles published of 62 medical journals (objects) to provide a Rasch measure for these
journals which is compared with the current “impact factor” computation. 相似文献
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Ioana Robu Denisa Marineanu Ileana Aciu Sally Wood‐Lamont 《Health information and libraries journal》2001,18(2):91-98
The paper articulates the problems of journal publication in a relatively small country such as Romania where locally (i.e. nationally) published journals include most of the national medical scientific output. The starting point was a study ordered by the Cluj University of Medicine and Pharmacy Scientific Council, for the purpose of obtaining an objectively ranked list of all current Romanian biomedical journals that could be used in the evaluation of the scientific activity of the university academic staff. Sixty‐five current biomedical journals were identified—of which more than half were new titles that had appeared over the past 5 years. None of these are included in the Science Citation Index or Journal Citation Reports (JCR). A set of criteria was used for ranking the journals: peer review, inclusion in international databases, publication time lag, language of articles and abstracts, journal specific index and domestic impact factor. The period covered, along with tools and formulas used are presented. The problems of Romanian biomedical journals as well as ways of improving publishing standards are discussed. Also emphasized is the necessity for increased awareness in the medical scholarly community and the role of the library in this respect. 相似文献
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Fitzpatrick RB 《Medical reference services quarterly》2003,22(4):45-56
This column features an overview of the Institute for Scientific Information's (ISI) Journal Citation Reports (JCR) database. Basic searching techniques are presented, as well as simple ways to manipulate data contained in the file. The Journal Citation Reports database can provide information on highest impact journals, most frequently used journals, "hottest" journals, and largest journals in a field or discipline. 相似文献
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Based on the 1,608 journals covered by the Chinese Science & Technology Journal Citation Reports (2005 edition), we analyzed the open access (OA) publishing situation of Chinese scientific journals. From this database we identified 91 journals offering full OA; a further 139 journals offered delayed OA. Data collected at three different time points (January 2006, July 2006, and January 2007) showed that the OA status of these journals is not stable; some OA journals subsequently became non‐OA. Most of the Chinese OA journals are not part of a larger aggregation, but are published independently. Relatively more OA journals are published in the fields of medicine and biology. Citation indicators of OA journals were found to be higher than those of non‐OA journals. 相似文献
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通过研究中国SCIE期刊学科分布,为中国英文期刊的学科布局提供依据,以提高我国英文期刊水平、吸引优质稿源回流.利用WoS和JCR,获取我国SCIE期刊的刊名、学科领域、影响因子等指标,对比分析出我国没有SCIE期刊的空白学科领域,并研究相关领域的论文产出情况.结果显示:我国SCIE收录期刊学科分布不均,具有Ql区期刊的学科有12个,期刊数大于或等于5刊次的学科有13个,尚有71个学科没有SCIE期刊;有些空白领域已有大量SCIE论文发表,有实力创办高水平英文期刊. 相似文献
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Digital object identifier and its use in core Chinese academic journals: A Chinese perspective 
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下载免费PDF全文 Digital object identifiers (DOIs) are widely used across the world but not very much within China. This paper investigates the current usage of DOIs in China. Using an isometric method, we sampled 238 core Chinese academic journals from the Chinese Science and Technical Journal Citation Reports (2015 version, Core Edition), which includes 2,383 journals in total. According to our investigation, we found that: (1) although 80.25% of journals assign DOIs, 42.41% have only assigned DOIs to articles published after 2010; (2) most journals (89.01%) register DOIs through Institute of Scientific and Technical Information of China; and (3) only 84.82% of journals that register DOIs include them in the articles. This paper looks at the reasons for the limited implementation of DOIs and makes suggestions as to how usage can be expanded in China. 相似文献
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The launch of Google Scholar Metrics as a tool for assessing scientific journals may be serious competition for Thomson Reuters' Journal Citation Reports, and for the Scopus‐powered Scimago Journal Rank. A review of these bibliometric journal evaluation products is performed. We compare their main characteristics from different approaches: coverage, indexing policies, search and visualization, bibliometric indicators, results analysis options, economic cost, and differences in their ranking of journals. Despite its shortcomings, Google Scholar Metrics is a helpful tool for authors and editors in identifying core journals. As an increasingly useful tool for ranking scientific journals, it may also challenge established journals products. 相似文献
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中国科技期刊开放存取出版现状 总被引：33，自引：1，他引：33
基于《2005年版中国科技期刊引证报告》所收录的1608种我国科技期刊,搜索并统计分析了我国科技期刊的开放存取出版(open access publishing,OAP)现状.结果表明:我国OA期刊已具有一定的数量规模(143种),但部分期刊OA出版的持续性较差,且大都为单刊OA,难以形成信息集成的优势;医学、生物学、农业科学和化学领域中OA期刊的数量相对较多,并且,在同领域中OA期刊的引证影响明显高于非OA期刊.认为我国的相关部门不仅要致力于组建稳定可靠的、有较大信息量的OA期刊网站,而且要关注学术论文的开放存档(open archive). 相似文献