期刊评价指标SJR、JIF和H指数的关系研究

以SSCI与SCOPUS收录重合的38种国际图书情报期刊为例,通过Spearman相关系数对SJR、JIF和H指数三种学术期刊评价指标之间关系进行研究,并对三者的优缺点进行归纳。结果表明,SJR、JIF和H指数三者呈线性关系,但由于SJR同时兼顾期刊被引数量与质量而更优。最后,对这些评价指标进行探讨与展望。     

A comparison of journal similarity across six disciplines using citing discipline analysis

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.     

Analysis of the distribution of cited journals according to their positions in the h-core of citing journal listed in Journal Citation Reports

The aim of this study is to analyze some properties of the distribution of journals that are cited in the h-core of citing journals listed in the Journal Citation Reports. Data were obtained from the 2011 edition of JCR available for universities in Spain. The citing journal matrix available in JCR was used to identify the cited journals that appear most frequently in the h-core. The results show that about 70% of citing journals occupy positions other than the first one in the set of journals cited by them. Some properties of the distribution of cited journals that appear in the h-core are also studied, such as the cost, in terms of citations, of occupying a given position, and the spectrum of positions (distribution of frequencies with which a given cited journal appears in different positions). The measures calculated here could be used to define new scientometric indicators.     

基于FDH模型的学术期刊评价新方法

[目的/意义] 探索用不同的方法对学术期刊进行评价,以获得更加有效、公平和有价值的信息,促进期刊评价理论与实践的发展。[方法/过程] 将经济学中的自由处置壳（FDH）效率评价模型引入到文献计量学中,对传统FDH模型进行调整,构建一种新的期刊评价方法,选取7个指标对图书情报类的41种期刊进行评价,并将评价结果与其他期刊排名进行相关性分析。[结果/结论] 基于FDH模型的期刊评价方法的评价结果更客观,与其他期刊排名显著相关;该方法将期刊评价指标融合在一起,不仅可以测算出每一个被评期刊的得分,还能够提供更多的有价值的信息,为期刊部门提供决策参考。例如,FDH模型可以识别出被评期刊的"标杆"控制期刊"等,期刊通过与其各指标表现接近的期刊进行对比、分析,发现自身存在的不足和差距,达到持续改进乃至超越的目的。     

因刊制宜 突出个性——国内综合性科技学术期刊封面设计调查与分析

以中国知网收录的121种综合性科技学术期刊的封面为调查对象,将其分为6种类型,针对每一类型进行理论和实例分析.认为封面设计应根据期刊实际状况,如期刊属性、地域、历史,以及稿件质量、特点等,考虑不同设计类型难度,兼顾美学特征和信息传递功能,因刊制宜,突出个性,采取适当的设计方式.     

利用OA期刊促进图书馆期刊资源建设探析

文章通过对OA期刊的概述和特点分析,指出OA期刊对图书馆期刊资源建设的影响和利用OA期刊进行期刊资源建设的原则,并提出利用OA期刊加强期刊资源建设的具体措施,即熟悉国内外现有OA期刊、OA期刊的组织和利用以及调整图书馆期刊订购工作等。     

关于专业性学科刊群构建与发展的思考

在国际期刊集团化、数字化、网络化发展的背景下,回顾国外科技期刊出版集团的发展路径,在分析比较我国现有科技期刊集群模式的基础上,认为专业性学科刊群是当前我国刊群建设的核心形态和未来发展趋势.对专业性学科刊群的建设和未来发展进行思考,提出发挥优秀期刊的品牌效应,基于现有集群进行品牌扩张和强强联合,以集群平台项目的建设为纽带推动刊群的建设,由期刊出版业向信息服务业转型等专业性学科刊群的建设发展策略.     

Journal weighted impact factor: A proposal

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.     

Cataloging & Classification Quarterly

Abstract

The World Wide Web site tor Cataloging & Classification Quarterly(CCQ) was created to address a serious need-timeli-ness-in communicating the results of research among librarians, while at the same time providing a number of new benefits to enhance the journal's relationship to its readers. Brought online in early 1995, it was the first such Web site for a professional journal in librarianship, and its characteristic method of making abstracts available well in advance of the print version anticipated a practice later employed by journals in a variety of other fields. Historical background to electronic texts is discussed in context with the beginnings of the CCQ Web page, along with providing an orientation to the relevant aspects of the still-evolving World Wide Web. By using the CCQ Web page as an example, an attempt to characterize the current state of electronic journal publishing will be outlined. With the decision early this year by CCQ's publisher, The Haworth Press, Inc., to begin a pilot program of publishing a select number of its some 160 journals via the World Wide Web, the CCQ Web site can be regarded as an influential forerunner for the publisher's development of electronic journals.     

The use of a weighted impact factor for the creation of a polythematic list of the most cited journals

The standard impact factor allows one to compare scientific journals only within particular scientific subjects. To overcome this limitation, another indicator of citation, viz., the thematically weighted impact factor (TWIF), is proposed. This indicator allows one to compare journals of various subjects and takes the fact that a journal belongs to several subjects into account. Information on the thematic headings of a journal and the value of a standard impact factor is necessary for calculation of the indicator. The TWIF, which is calculated according to the citation index of Journal Citation Reports, is investigated in this article.     

引文评价新指标SNIP在国内外期刊中的实证研究

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。     

Composite journal rankings in library and information science: A factor analytic approach

This study uses citation data and survey data for 55 library and information science journals to identify three factors underlying a set of 11 journal ranking metrics (six citation metrics and five stated preference metrics). The three factors—three composite rankings—represent (1) the citation impact of a typical article, (2) subjective reputation, and (3) the citation impact of the journal as a whole (all articles combined). Together, they account for 77% of the common variance within the set of 11 metrics. Older journals (those founded before 1953) and nonprofit journals tend to have high reputation scores relative to their citation impact. Unlike previous research, this investigation shows no clear evidence of a distinction between the journals of greatest importance to scholars and those of greatest importance to practitioners. Neither group's subjective journal rankings are closely related to citation impact.     

分析综合性全文数据库中限制期问题

全文数据库中全文期刊数量不断增加的同时，带有限制期的期刊也将会大量出现，这一现象的存在，对于出版商而言是为了保护传统的印刷版和电子版期刊订购，对于图书馆来说会产生这样的误解：限制期的存在是否会减少数据库全文内容。因此，消除误解有利于图书馆利用限制使图书馆各类型资源一体化，而不是单纯提供在限制期刊与当前的索引数据库中进行无缝检索。全文数据库存在期刊限制信息远远胜过无全文信息的数据库。     

Classification method for detecting coercive self-citation in journals

Journal self-citations strongly affect journal evaluation indicators (such as impact factors) at the meso- and micro-levels, and therefore they are often increased artificially to inflate the evaluation indicators in journal evaluation systems. This coercive self-citation is a form of scientific misconduct that severely undermines the objective authenticity of these indicators. In this study, we developed the feature space for describing journal citation behavior and conducted feature selection by combining GA-Wrapper with RelifF. We also constructed a journal classification model using the logistic regression method to identify normal and abnormal journals. We evaluated the performance of the classification model using journals in three subject areas (BIOLOGY, MATHEMATICS and CHEMISTRY, APPLIED) during 2002–2011 as the test samples and good results were achieved in our experiments. Thus, we developed an effective method for the accurate identification of coercive self-citations.     

外文参考文献与学术期刊影响力的关系

研究学术期刊论文引用外文参考文献对期刊影响力的作用机理具有重要意义。文章提出两个新的文献计量指标:外文参考文献h指数、高外文参考文献比例,并以图书馆情报与文献学CSSCI期刊为例,基于中国知网CNKI数据库,采用偏最小二乘法研究引用外文参考文献与学术期刊影响力的关系。研究结果表明:引用外文参考文献有助于提高学术期刊影响力;外文参考文献h指数和高外文参考文献比例可用于评价中文学术期刊;外文参考文献h指数和高外文参考文献比例也可供其他语言的学术期刊借鉴。     

Online journals: impact on print journal usage

PURPOSE: The research sought to determine the impact of online journals on the use of print journals and interlibrary loan (ILL). SETTING: The Library of the Health Sciences-Peoria is a regional site of the University of Illinois at Chicago (UIC) Library with a print journal collection of approximately 400 titles. Since 1999, UIC site licenses have given students and faculty affiliated with UIC-Peoria access to more than 4,000 online full-text journal titles through the Internet. METHODOLOGY: The Library of the Health Sciences-Peoria has conducted a journal-use study over an extended period of time. The information collected from this study was used to assess the impact of 104 online journals, added to the collection in January 1999, on the use of print journals. RESULTS: Results of the statistical analysis showed print journal usage decreased significantly since the introduction of online journals (F(1,147) = 12.10, P < 0.001). This decrease occurred regardless of whether a journal was available only in print or both online and in print. Interlibrary loan requests have also significantly decreased since the introduction of online journals (F(2,30) = 4.46, P < 0.02). CONCLUSIONS: The decrease in use of the print collection suggests that many patrons prefer to access journals online. The negative impact the online journals have had on the use of the journal titles available only in print suggests users may be compromising quality for convenience when selecting journal articles. Possible implications for collection development are discussed.