How to calculate the practical significance of citation impact differences? An empirical example from evaluative institutional bibliometrics using adjusted predictions and marginal effects

Evaluative bibliometrics is concerned with comparing research units by using statistical procedures. According to Williams (2012) an empirical study should be concerned with the substantive and practical significance of the findings as well as the sign and statistical significance of effects. In this study we will explain what adjusted predictions and marginal effects are and how useful they are for institutional evaluative bibliometrics. As an illustration, we will calculate a regression model using publications (and citation data) produced by four universities in German-speaking countries from 1980 to 2010. We will show how these predictions and effects can be estimated and plotted, and how this makes it far easier to get a practical feel for the substantive meaning of results in evaluative bibliometric studies. An added benefit of this approach is that it makes it far easier to explain results obtained via sophisticated statistical techniques to a broader and sometimes non-technical audience. We will focus particularly on Average Adjusted Predictions (AAPs), Average Marginal Effects (AMEs), Adjusted Predictions at Representative Values (APRVs) and Marginal Effects at Representative Values (MERVs).     

国外索引研究进展：以TheIndexer为例

运用文献计量方法和内容分析方法,对2000-2008年间The Indexer刊登的论文进行统计分析,并对其研究类别进行了划分和汇总,通过对该刊文献的分析了解国外索引研究的进展.笔者在统计数据和文献内容分析的基础上,总结了国外索引研究的主要特点,并对国外索引研究趋势进行了梳理和阐述.     

从单篇论文评价视角看学术期刊的首篇文章

选取中国科技论文与引文数据库中2003—2012年的论文及引文数据,以综合大学学报类和医学综合类期刊的首篇文章为例,从单篇论文评价的角度探讨首篇文章(同行评议质量较高)与同期的总体论文、高h指数论文、高被引论文之间的关系。结果发现:相比同期的其他论文,期刊的首篇文章具有更高的影响力,论文的h指数均值及篇均被引都高于前者;期刊的首篇论文中,38%同时为当期论文中的h指数最高论文,10%为当期论文中的被引频次最高论文,定量评价的高质量论文与同行评议的高品质论文——首篇文章,具有较好的重合度。值得注意的是,这种重合度随着时间的推移在不断增长。     

SCI-E收录中国期刊现状分析

中国作者对发表SCI论文有巨大的需求,但目前SCIE收录的中国期刊数量较少,且总体水平未达到世界平均水平。将SCI-E收录的中国期刊根据语种和论文作者的国籍进行分类后发现:甲类期刊(以中文刊载的论文大于50%)和乙类期刊(发表论文的作者至少50%来自中国,且至少50%的论文以英文形式发表)学术水平未达到国际平均水平,2001—2011年期间变化不大;但乙类期刊是SCI-E收录的中国期刊中的绝大多数。丙类期刊(其刊载的论文至少50%是以英文发表的,且至少50%的论文第一作者为非中国作者)引用指数(JCS)逐年上升,上升幅度明显,2011年超过国际平均水平。说明通过改变语种不能提高期刊的国际影响力。在这3类期刊中,丙类年刊均载文量最低,为117.27篇/刊,2007后呈逐年下降趋势,2011年甚至降至91.07篇/刊。中国被SCI-E收录的期刊数量少,与国内发表SCI论文的巨大需求,以及中国期刊走上国际舞台,发挥更大的学术影响力的需求差距甚远,的确有必要创办更多的英文科技期刊;但是在此过程中,有必要慎重评价SCI-E收录期刊的学术影响力和作用。     

基于文献计量的基层图书馆研究成果分析

综合运用词频统计与社会网络分析的方法,以中国学术期刊网络出版总库中1 628篇有关基层图书馆研究成果的题录信息为样本,对论文的发表时间、期刊分布、著者分布、被引频次、研究机构五个方面进行定量分析。基于关键词词频的知识图谱表明,基层图书馆是一个包括县级图书馆、街道图书馆、乡镇图书馆、社区图书馆、流动图书馆、农村图书室、农家书屋等的图书馆体系,形成了馆藏与设施、馆员与读者、工作与服务、建设与发展等四大研究领域。     

基于文献计量的中国图书馆法研究综述

利用文献计量法对1995-2011年间以中国图书馆法为主题的论文做了统计分析和回溯研究,揭示了中国图书馆法的基本原则、主要内容、理论成果,并对其研究成果做了总结。     

《中华医院管理杂志》核心作者文献计量分析

采用文献计量学方法,对《中华医院管理杂志》2003—2006年论文作者发文量、合作情况、地区分布、核心作者、论文多产单位等进行统计分析。《中华医院管理杂志》作者分布范围广、合作率高,并拥有一支实力雄厚、对刊物影响较大、造诣较深、活跃的核心作者队伍。     

Using Subject Guides to Support Curriculum and Patient Care: A Multipronged Approach

Even though the library subscribes to numerous valuable health science resources, many e-books are not being used by clinicians, researchers, and students. Because these resources are bundled in various packages that often do not show up in federated searches, making them more discoverable is important. At the same time, the cost of textbooks is increasingly burdensome for students. Using authoritative lists and metrics to evaluate these resources while also seeking faculty input to include the best resources in subject guides may not only benefit the faculty and students but also aid in promoting library resources.     

Use of bibliometric analysis of Greek hospital personnel publications

In this paper, Stamatoula Pylarinou with her supervisor Prof. Sarantos Kapidakis reports on an analysis of bibliographic data of the publications of Greek hospital personnel, conducted as part of Stamatoula’s doctoral research in the Department of Archive, Library and Museum Sciences at the Ionian University in Corfu, Greece. Using freely available data, they demonstrate the questions posed and the insights gained from the analysis of the scientific publications of personnel of public hospitals in Greece, in particular amid the years of austerity in Greece. With regard to impact on practice, they suggest that these procedures for the processing of medline /PubMed bibliographic data can improve communication among hospital librarians and administration or patients, adding value to their duties and enhancing the information and services they can provide. F.J.