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Patrick Obrien Kenning Arlitsch Leila Sterman Jeff Mixter Jonathan Wheeler Susan Borda 《图书馆管理杂志》2013,53(7):854-874
ABSTRACTA primary impact metric for institutional repositories (IR) is the number of file downloads, which are commonly measured through third-party Web analytics software. Google Analytics, a free service used by most academic libraries, relies on HTML page tagging to log visitor activity on Google's servers. However, Web aggregators such as Google Scholar link directly to high value content (usually PDF files), bypassing the HTML page and failing to register these direct access events. This article presents evidence of a study of four institutions demonstrating that the majority of IR activity is not counted by page tagging Web analytics software, and proposes a practical solution for significantly improving the reporting relevancy and accuracy of IR performance metrics using Google Analytics. 相似文献
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An assessment of the accessibility of PDF versions of selected journal articles published in a WCAG 2.0 era (2014–2018) 
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下载免费PDF全文 Julius T. Nganji 《Learned Publishing》2018,31(4):391-401
Two hundred portable document format (PDF) articles from four Web of Science‐indexed disability‐related journals were analysed to assess their accessibility. Fifty articles from each journal published between 2014 and 2018 were examined using expert manual inspection, Adobe Acrobat Pro XI, PDF Accessibility Checker 3 and NVDA screen reader. Results show that only 15.5% of the documents were tagged, only 10.5% had alternative text for images, 74.5% had bookmarks to facilitate navigation, and 87% had meaningful titles in their title fields. However, image alternative texts were meaningless, and title fields were not displayed when the document was open. However, all the documents had accessibility permissions enabled; hence, they could be read with Adobe Acrobat Pro XI Read Out Loud feature and NVDA screen reader. All the articles had an alternative HTML version of their full text in the same location on their website as the PDF versions. The inconsistency with which each PDF was produced suggests the need for an improvement in the workflow process to improve accessibility. 相似文献
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William H. Walters 《The Reference Librarian》2013,54(1):13-22
This guide describes several information sources that can be used to assist faculty interested in quantitative and qualitative assessments of journal reputation and scholarly impact: Journal Citation Reports, Eigenfactor, Google Scholar Metrics, Elsevier Journal Metrics, Excellence in Research for Australia, Cabell’s International, Web of Science, Scopus, Google Scholar, and Beall’s List. It also introduces the indicators most often used to represent citation impact: impact factor, article influence score, eigenfactor, h5-index, source normalized impact per paper, impact per publication, and SCImago journal rank. Methods of assessing the influence of individual articles are also presented, along with strategies for the identification of predatory or low-quality journals. 相似文献
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Terry Ballard 《The Reference Librarian》2013,54(2):150-158
Librarians at the Arnold Bernhard Library of Quinnipiac University were at a crossroads with electronic reference books. At first they had added the titles to the library's web page, generated records to individual titles in the online catalog, and even established links to their content using the link resolver in the online catalog. It was still felt that the collection was not living up to its potential. In 2007, the automation librarian began a project to add one more level of access to these titles – a graphic interface that simulated the process of walking into a reference room and picking out a title – all of this done with no programming beyond basic HTML. Early usage reports beginning in the Fall of 2007 prove that the concept has found an audience. 相似文献
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以引文数据库Web of Science以及Scopus为文献源,采用文献计量学的方法,针对2004年至今的以Google Scholar为研究主题的文献,从文献量及年代分布、文献类型及语种、作者、期刊、文献被引和主题等方面进行分析,揭示Google Scholar的研究现状。 相似文献
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为了探讨同行评议、影响计量学以及传统文献计量指标在科学评价中的有效性,本文选取F1000、Mendeley以及Web of Science、Google Scholar数据库,采用SPSS 19.0软件,将心理学与生态学的1,3篇论文的同行评议结果即F1000因子、Mendeley阅读统计、期刊影响因子,以及Web of Science、Google Scholar数据库中被引频次进行相关分析。结果表明:同行评议结果、传统引文分析指标以及以Mendeley为代表的影响计量指标具有低度正相关性,这意味着上述指标在科学评价中审视视角的不同以及数字时代科学评价的多维构成;心理学筛选数据中F1000因子与期刊影响因子相关度几近为0,这一结论进一步证实了期刊影响因子与单篇论文影响力的严重背离;生态学与心理学指标相关分析结果的不同折射出科学评价中自然科学、社会科学的差异。图3。表4。参考文献10。 相似文献
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Obst O 《Health information and libraries journal》2003,20(1):22-32
This study in an academic medical sciences library setting examines the correlation of usage of a matched set of print and online titles, the validity of e-journals usage statistics and the impact of online journals on print journal usage. The print and online usage was determined for 270 journals, both versions of which were available. Print usage was determined annually since 1997 using the reshelving and the error-copies method. Online usage statistics were delivered by five publishers and corrected for redundant multiple accesses. Print journal usage decreased by 22.3 and 30.2% respectively over each of 2 years after the introduction of online journals. Journals published both in print and online lost 30.4% of their print usage within 2 years. The total loss of usage of print-only titles in the same period was somewhat higher, at 45.8%. The average correlation between online and print usage is 0.60 and 0.67 respectively. For the examined titles, users accessed the online versions ten times as often as the print version. Two clearly distinguishable groupings emerged: while with Academic Press and Elsevier, e-journal usage exceeded print usage by a factor of 3 or 4, the e-journals of Blackwell, HighWire and Springer were used on average 14.6 times as frequently as the corresponding print journals. Each usage of a print article cost 2.79-50.82 Euro, each usage of an online article 0.31-15.10 Euro, depending on the publisher. On average, the usage of an online article was 5.4 times cheaper. Within 2-3 years the usage of online journals has outstripped that of print titles by a factor of ten, but the specific spectrum of usage remains much the same as when only print journals alone existed. Print titles not available online suffer a greater decline in usage compared with print/online journals. This confirms that what is read or purchased is determined primarily by ease of access and that there is a steady tendency to reduce the multiplicity of access modes to a manageable few. The availability of journals online seems to have created a new clientele, at least in the case of the German-language Springer journals. The connection between supplier and supply is much less clear with e-journals than it is with print titles. Therefore it is very important to stress and encourage the role of the library as the supplier of this sort of information in the university environment. Collection building issues are discussed in the light of the results. 相似文献
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《Journal of Web Librarianship》2013,7(3):197-209
ABSTRACTWeb page views of databases by title and databases by subject pages, in conjunction with COUNTER Database Report 1 and Journal Report 1 statistics, were examined to determine what impact a migration to Primo, a Web-scale discovery layer, had at Central Washington University Brooks Library. The analysis determined that the first year post-migration (2015) compared to the two years pre-migration (2013–14) saw a decline in Web page views of database Web pages, journal full-text article requests, and database record views and result clicks. The implementation of Primo thus had a noticeable negative impact on both direct database access and overall electronic resource usage during the first year post-migration. 相似文献
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Dissertations can be the single most important scholarly outputs of junior researchers. Whilst sets of journal articles are often evaluated with the help of citation counts from the Web of Science or Scopus, these do not index dissertations and so their impact is hard to assess. In response, this article introduces a new multistage method to extract Google Scholar citation counts for large collections of dissertations from repositories indexed by Google. The method was used to extract Google Scholar citation counts for 77,884 American doctoral dissertations from 2013 to 2017 via ProQuest, with a precision of over 95%. Some ProQuest dissertations that were dual indexed with other repositories could not be retrieved with ProQuest-specific searches but could be found with Google Scholar searches of the other repositories. The Google Scholar citation counts were then compared with Mendeley reader counts, a known source of scholarly-like impact data. A fifth of the dissertations had at least one citation recorded in Google Scholar and slightly fewer had at least one Mendeley reader. Based on numerical comparisons, the Mendeley reader counts seem to be more useful for impact assessment purposes for dissertations that are less than two years old, whilst Google Scholar citations are more useful for older dissertations, especially in social sciences, arts and humanities. Google Scholar citation counts may reflect a more scholarly type of impact than that of Mendeley reader counts because dissertations attract a substantial minority of their citations from other dissertations. In summary, the new method now makes it possible for research funders, institutions and others to systematically evaluate the impact of dissertations, although additional Google Scholar queries for other online repositories are needed to ensure comprehensive coverage. 相似文献
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Glover SW Addison J Gleghorn C Bramwell J 《Health information and libraries journal》2007,24(3):193-199
BACKGROUND: Health care libraries spend a large amount of their non-pay budgets on the purchase of scientific, technical and medical journals. In a typical hospital library in the National Health Service (NHS) North West Strategic Health Authority (SHA), this can represent between 80 and 90% of the collection development budget. METHODS AND RESULTS: Data were collected from 1 December 2005 to 30 November 2006 using COUNTER-generated usage statistics obtained from publishers' administration tools. Between the two trusts included in the study, 93 376 full-text article downloads were recorded; of these, 15 952 or 17.1% articles were downloaded from national core content journals via Proquest. Photocopies made by users for their own use were recorded whenever this data were available. CONCLUSIONS: NHS staff at the sites included in this study recorded a high volume of journal usage. There was a marked difference in usage patterns between the acute and specialist trusts in the study. The journals provided by national core content represented a much higher proportion of total usage at the acute trust (29.9%) compared with the specialist cancer trust (4.5%). This study supports the view that the local purchasing of journal titles is an important component of the overall journal-based information provision to NHS staff. 相似文献
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Nicole C. Eva 《Journal of Business & Finance Librarianship》2013,18(1):38-48
This article investigates the importance of journal titles in the area of Management and Economics at the University of Lethbridge in southern Alberta, Canada. Not wanting to rely solely on usage data, the author undertook a citation analysis to see which journals were most frequently published in by the university's authors. The results showed that usage data does not tell the whole story when it comes to a journal's importance to an institution. The analysis also illuminated publishers providing journals which were most frequently used. 相似文献
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随着交叉科学研究在促进社会发展重大综合性问题解决方面的优势逐渐凸显,越来越多的国家对交叉科学研究给予高度的重视与支持,如何对交叉科学的研究成果进行有效的鉴定与评估也成为科技管理部门亟待解决的重要问题。本文在传统引文指标的基础上,引入PLoS官方平台的使用数据(html浏览、xml下载及pdf下载)作为补充,综合评价交叉科学研究成果的影响力情况。以2009-2013年发表在开源期刊PLoS Computational Biology的研究论文为例,研究结果表明:(1)学科交叉水平与论文影响力之间存在一定的正向关系,学科交叉水平高的论文,对应的使用数据与引用数据要明显高于学科交叉水平较低的论文;(2)论文的使用数据与引用数据相互促进,在引用数据达到峰值时,对应的使用数据也会随之出现一定的回升;(3)学科交叉程度对使用数据与引用数据之间的相关关系也有较为显著的影响。本文从使用数据和引用数据两个维度探索交叉科学研究成果的影响力,为当前交叉科学研究成果影响力的评价提供了新的借鉴与参考。 相似文献
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数字出版网络影响因子研究 总被引：1，自引：0，他引：1
网络影响因子是某一时刻链接到网络上某一特定网站或区域的网页数与这一网站或区域本身所包含的网页数的比值,可以用于对期刊网站进行评价.搜索引擎有AltaVista、Fast、Coogle.通过开发专业搜索引擎来完善网络影响因子的计算. 相似文献
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结合英文论文标题的已有研究成果,深入中文论文标题的探讨,通过数据统计定量分析中文论文标题类型的下载和引用的特点,以及标题长度和带冒号的标题对下载和引用的影响,揭示论文标题与下载和引用的关系,填补了国内关于这一研究的空白。 相似文献
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This article outlines a methodology to generate a list of local core journal titles by doing a citation analysis and details the process for retrieving and downloading data from Scopus. It analyzes correlations among citation count, journal rankings, and journal usage. The results of this study reveal significant correlations between journal rankings and journal usage. No correlation with citation count has been found. Limitations and implications for collection development and outreach are also discussed. 相似文献