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1.
Because of the variations in citation behavior across research fields, appropriate standardization must be applied as part of any bibliometric analysis of the productivity of individual scientists and research organizations. Such standardization involves scaling by some factor that characterizes the distribution of the citations of articles from the same year and subject category. In this work we conduct an analysis of the sensitivity of researchers’ productivity rankings to the scaling factor chosen to standardize their citations. To do this we first prepare the productivity rankings for all researchers (more than 30,000) operating in the hard sciences in Italy, over the period 2004–2008. We then measure the shifts in rankings caused by adopting scaling factors other than the particular factor that seems more effective for comparing the impact of publications in different fields: the citation average of the distribution of cited-only publications. 相似文献
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We address issues concerning what one may learn from how citation instances are distributed in scientific articles. We visualize and analyze patterns of citation distributions in the full text of 350 articles published in the Journal of Informetrics. In particular, we visualize and analyze the distributions of citations in articles that are organized in a commonly seen four-section structure, namely, introduction, method, results, and conclusions (IMRC). We examine the locations of citations to the groundbreaking h-index paper by Hirsch in 2005 and how patterns associated with citation locations evolve over time. The results show that citations are highly concentrated in the first section of an article. The density of citations in the first section is about three times higher than that in subsequent sections. The distributions of citations to highly cited papers are even more uneven. 相似文献
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《Journal of Informetrics》2023,17(3):101431
In science-technology research, papers and patents are used to represent science and technology, respectively. Detecting sleeping beauty papers and their princes in technology (patent field) could uncover dynamic knowledge contributions from science (paper field) to technology (patent field). However, previous studies have mainly focused on sleeping beauty in science. Some studies have examined SB patents in technology, but SB papers in patents are rarely studied and need to be further discussed. In addition, knowledge could flow along citations. Thus, if one paper is cited by one patent's reference (indirect citation), it also contributes to the patent, even though the patent does not directly cite it. At the same time, indirect citations are rarely discussed in sleeping beauty studies. This could lead to a loss of significant information. Therefore, to reveal the dynamic knowledge contribution from science to technology considering indirect citations, this study proposed a new method of mining sleeping beauty papers in technology and their princes. The lithium-ion battery domain is selected as a case study. The findings are as follows: (1) Most papers do not contribute knowledge to technology continuously, even when considering indirect citations, and the time-varying knowledge contribution strength changes significantly overtime. (2) The knowledge contribution strength with a time delay of more than 11 years occupies 80% of the total knowledge contribution strength. It is suggested that the window period of paper publication evaluation be extended. (3) 22 sleeping beauty papers in technology are detected. Nine papers are among the top 10 regarding the total knowledge contribution strength. (4) The princes of 9 typical sleeping beauty papers in technology are all papers. This implies that the awakening of these papers in technology was all provoked by scientific development. 相似文献
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Is more always better? We address this question in the context of bibliometric indices that aim to assess the scientific impact of individual researchers by counting their number of highly cited publications. We propose a simple model in which the number of citations of a publication depends not only on the scientific impact of the publication but also on other ‘random’ factors. Our model indicates that more need not always be better. It turns out that the most influential researchers may have a systematically lower performance, in terms of highly cited publications, than some of their less influential colleagues. The model also suggests an improved way of counting highly cited publications. 相似文献
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Mike Thelwall 《Journal of Informetrics》2019,13(2):658-678
Articles are cited for different purposes and differentiating between reasons when counting citations may therefore give finer-grained citation count information. Although identifying and aggregating the individual reasons for each citation may be impractical, recording the number of citations that originate from different article sections might illuminate the general reasons behind a citation count (e.g., 110 citations = 10 Introduction citations + 100 Methods citations). To help investigate whether this could be a practical and universal solution, this article compares 19 million citations with DOIs from six different standard sections in 799,055 PubMed Central open access articles across 21 out of 22 fields. There are apparently non-systematic differences between fields in the most citing sections and the extent to which citations from one section overlap with citations from another, with some degree of overlap in most cases. Thus, at a science-wide level, section headings are partly unreliable indicators of citation context, even if they are more standard within individual fields. They may still be used within fields to help identify individual highly cited articles that have had one type of impact, especially methodological (Methods) or context setting (Introduction), but expert judgement is needed to validate the results. 相似文献
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Péter Vinkler 《Journal of Informetrics》2013,7(1):72-83
The aim of the study is to explore the effects of the increase in the number of publications or citations on several impact indicators by a single journal paper or citation. The possible change of the h-index, A-index, R-index, π-index, π-rate, Journal Paper Citedness (JPC), and Citation Distribution Score (CDS) is followed by models. Particular attention is given to the increase of the indices by a single plus citation. The results obtained by the “successively built-up indicator” model show that with increasing number of citations or self-citations the indices may increase substantially. 相似文献
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Mike Thelwall 《Journal of Informetrics》2018,12(4):1031-1041
There are known gender imbalances in participation in scientific fields, from female dominance of nursing to male dominance of mathematics. It is not clear whether there is also a citation imbalance, with some claiming that male-authored research tends to be more cited. No previous study has assessed gender differences in the readers of academic research on a large scale, however. In response, this article assesses whether there are gender differences in the average citations and/or Mendeley readers of academic publications. Field normalised logged Scopus citations and Mendeley readers from mid-2018 for articles published in 2014 were investigated for articles with first authors from India, Spain, Turkey, the UK and the USA in up to 251 fields with at least 50 male and female authors. Although female-authored research is less cited in Turkey (?4.0%) and India (?3.6%), it is marginally more cited in Spain (0.4%), the UK (0.4%), and the USA (0.2%). Female-authored research has fewer Mendeley readers in India (?1.1%) but more in Spain (1.4%), Turkey (1.1%), the UK (2.7%) and the USA (3.0%). Thus, whilst there may be little practical gender difference in citation impact in countries with mature science systems, the higher female readership impact suggests a wider audience for female-authored research. The results also show that the conclusions from a gender analysis depend on the field normalisation method. A theoretically informed decision must therefore be made about which normalisation to use. The results also suggest that arithmetic mean-based field normalisation is favourable to males. 相似文献
9.
This study aimed to examine whether a graphical abstract (GA) on a publisher's official website affected an article's usage and citations. Articles published in Molecules during 2016 (n = 1389) and 2017 (n = 1804) were selected as the data sets. Propensity score matching analysis was conducted to examine the data sets. The results showed that articles with GAs had significantly greater text abstract usage than those without GAs. There were no significant differences between the two groups (articles with/without GAs) on the usage of the full text as well as citations, both in the data set of 2016 and the data set of 2017. Our study concluded that a GA played a role in attracting attention with ‘the first impressions’ to gain more clicks of text abstract for an article, however, it took no advantage in receiving more usage of full text and citations of the article. 相似文献
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Jerry L. Allen 《Communication Research Reports》2013,30(4):341-343
This study investigated the influence that social and emotional support have on attributional confidence in the brother‐brother relationship. Two‐hundred thirteen males reported on the relationship with their brother. Social support dimensions of relational support, interpersonal depth, relational conflict and emotional support were examined as a function of attributional confidence. Results indicated positive relationships between social support dimensions of relational support and interpersonal depth with attributional confidence. Relational conflict was negatively related to attributional confidence. No significant relationship between emotional support and attributional confidence was observed. 相似文献
12.
This article analyses the growth of the Brazilian book market in the decade from 2004 to 2013 and compares it to Brazil’s GNP growth. It also studies the recent developments of three factors that should contribute to the performance of the Brazilian book industry: the growth of the middle class, the decrease of functional illiteracy and the higher number of college institutions and college students in the country. This article shows that despite these factors, the Brazilian book industry is underperforming and not living up to its potential. 相似文献
13.
David Taylor 《Learned Publishing》2001,14(2):107-112
This paper first looks at the current supply model for the paper textbook in the UK market and its peculiar vulnerability not only to the new internet-based entrants, but also to the changing nature of the very product itself. It then looks at the emerging supply model for the electronic version of the textbook – the e-book – and why that mode of delivery is especially appropriate to the UK student market. It concludes by describing what the future supply model might look like for this material: the delivery of the electronic chapter. 相似文献
14.
《Journalism Practice》2013,7(2):123-137
This paper explores the results of the introduction of the Pop-Up Newsroom, a virtual, temporary citizen journalism-style mobile news operation, to university student journalists. The results revealed two categories of response: those who embraced change and began to develop networked journalism identities; and those who advocated for the traditional brick-and-mortar newsroom and accompanying practices as preserving professional journalism identities. 相似文献
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David A. Wallace 《Archival Science》2011,11(1-2):1-12
This special issue of Archival Science examines the orientations, paradoxes, and tensions evident in the ethical struggles over the construction of the past and the degree to which archival agency can intercede in supporting a broadly drawn historical justice that also engages contemporary issues. Inspired and framed by a May 2008 conference hosted by School of Information and Labadie Collection, University of Michigan, Ann Arbor, the following essays offer case study examinations of how archival institutions and archivists contribute to societal memory systems through both their action and inaction, especially in regard to societal struggles over the meanings to be derived from the past. 相似文献
16.
《Library Acquisitions: Practice & Theory #》1995,19(2):235-241
In this paper I will look at relations in the book world between the UK and the rest of Europe. I will consider the London International Book Fair in its European context and will go on to show some of the impact of the European Union on libraries, publishers and booksellers. I will look to see whether there is any light at the end of The Tunnel. 相似文献
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本文从知识管理的角度阐述建立基于知识管理的医院信息化系统的必要性及其作用,同时提出了建设基于知识管理的医院信息化系统的解决方案。 相似文献
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《野性的呼唤》是杰克．伦敦的第一本最畅销的书,该书虽篇幅不足百页,情节也较简单,却被视为美国文学的一部经典。本文试图分析主人公巴克在一次次的挑战中其顽强的性格,表达了一个真正伟大的适存者,从而也暗示了适者生存理念。 相似文献
20.
Ubonrat Siriyuvasak 《亚洲交流杂志》2013,23(2):57-74
Broadcast media is one of the high growth industries in Thailand; its expansion riding along with the present liberalization of the manufacturing and service industries supported by successive governments through the 1980s and ‘90s. This pace of change was quickened considerably by the 1992 up‐rising against the institutionalization of a nonelected prime‐minister, with calls for freedom of speech on radio and TV. This article illustrates the on‐going liberalization process and asks if market forces have necessarily resulted in less censorship and more diverse and better quality programming. It also questions whether there is fair competition in the Thai broadcasting industry, and whether the subsequent reforms are working in the best interests of the public. 相似文献