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1.
This paper presents the results of a bibliometric study of the scientific publications that are affiliated with Russia and
included in multidisciplinary databases, such as Science Citation Index and Scopus, as well as in the specialized Chemical
Abstracts database, in the period from 2005 to 2009. Major bibliometric indicators, including citation indexes, are explored.
It is shown that the Scopus database contains most of the Russian publications in the period from 2005 to 2009. While a gradual
decrease in the number of peer-reviewed Russian-language journals constitutes a general trend for all three databases, the
Chemical Abstracts database leads in terms of the coverage of these journals. It is found that despite the large number of
translated versions of journals, Russian publications are still significantly late in their coverage by foreign databases,
which has a significant impact on their citation levels. 相似文献
2.
Chris ARMBRUSTER 《Learned Publishing》2010,23(1):33-38
As the Internet has enhanced the collection and provision of citation, usage, and access metrics, the challenge lies neither in the technology nor the method, but in constructing databases that deliver services of value to the scholar. The question everybody should be asking is: what kind of metric information services would serve scholars? One example is given of the systems that might well help a postdoctoral researcher. 相似文献
3.
Many studies demonstrate differences in the coverage of citing publications in Google Scholar (GS) and Web of Science (WoS). Here, we examine to what extent citation data from the two databases reflect the scholarly impact of women and men differently. Our conjecture is that WoS carries an indirect gender bias in its selection criteria for citation sources that GS avoids due to criteria that are more inclusive. Using a sample of 1250 U.S. researchers in Sociology, Political Science, Economics, Cardiology and Chemistry, we examine gender differences in the average citation coverage of the two databases. We also calculate database-specific h-indices for all authors in the sample. In repeated simulations of hiring scenarios, we use these indices to examine whether women's appointment rates increase if hiring decisions rely on data from GS in lieu of WoS. We find no systematic gender differences in the citation coverage of the two databases. Further, our results indicate marginal to non-existing effects of database selection on women's success-rates in the simulations. In line with the existing literature, we find the citation coverage in WoS to be largest in Cardiology and Chemistry and smallest in Political Science and Sociology. The concordance between author-based h-indices measured by GS and WoS is largest for Chemistry followed by Cardiology, Political Science, Sociology and Economics. 相似文献
4.
In 2005, the authors reviewed citation help in databases and found an error rate of 4.4 errors per citation. This article describes a follow-up study that revealed a modest improvement in the error rate to 3.4 errors per citation, still unacceptably high. The most problematic area was retrieval statements. The authors conclude that librarians should include citation features in the evaluation of databases and should open a dialogue with vendors about the importance of providing accurate, reliable information about citations to students. 相似文献
5.
Julian Hirt Johannes Bergmann Melanie Karrer 《Journal of the Medical Library Association》2021,109(2):275
Objective:We aimed to determine overlaps and optimal combination of multiple database retrieval and citation tracking for evidence synthesis, based on a previously conducted scoping review on facilitators and barriers to implementing nurse-led interventions in dementia care.Methods:In our 2019 scoping review, we performed a comprehensive literature search in eight databases (CENTRAL, CINAHL, Embase, Emcare, MEDLINE, Ovid Nursing Database, PsycINFO, and Web of Science Core Collection) and used citation tracking. We retrospectively analyzed the coverage and overlap of 10,527 retrieved studies published between 2015 and 2019. To analyze database overlap, we used cross tables and multiple correspondence analysis (MCA).Results:Of the retrieved studies, 6,944 were duplicates and 3,583 were unique references. Using our search strategies, considerable overlaps can be found in some databases, such as between MEDLINE and Web of Science Core Collection or between CINAHL, Emcare, and PsycINFO. Searching MEDLINE, CINAHL, and Web of Science Core Collection and using citation tracking were necessary to retrieve all included studies of our scoping review.Conclusions:Our results can contribute to enhancing future search practice related to database selection in dementia care research. However, due to limited generalizability, researchers and librarians should carefully choose databases based on the research question. More research on optimal database retrieval in dementia care research is required for the development of methodological standards. 相似文献
6.
The aim of this study is to explore the phenomenon of research software citation and, in particular, to draw attention to the increasing importance of this form of citation in scholarly communication. This research sheds light on the current status of formal software citation that is captured by citation databases. Data for the study were gathered from more than 67,000 research software records available in public repositories indexed by Clarivate Analytics’ Data Citation Index (DCI). The metadata characteristics of the indexed records and citation data were then analyzed. Research software was rarely cited in the DCI, suggesting that the documented reuse of research software rarely occurs or is not well documented. Institutional repositories attracted few citations and had low rate of citation. It proved impossible, however, using the available data to isolate specific identifiers that can promote formal software citation. The findings presented here offer insights into research software citation that will be of interest to funding agencies, publishers, researchers, and research organizations. 相似文献
7.
孙安 《大学图书情报学刊》2009,27(3):57-60
文章对我国四大引文数据库及其期刊引证报告的发展和现状做了简要总结。对这四大引文数据库极其引证报告的特色进行了比较,指出了四大引文数据库及其引证报告的不足,并提出了改进的建议与措施。 相似文献
8.
[目的/意义] 梳理软件引用及其规范的理论和实践现状,分析存在的困难和问题,促进软件引用规范和标准的建立。[方法/过程] 通过文献调研,得出软件引用面临接受文化、奖励制度、引用认知和元数据4个方面挑战,分析国内外为应对挑战对软件引用及其规范的理论探索和实践进展。[结果/结论] 软件引用利益相关者分析、软件引用原则和元数据标准等理论探索以及国际研究组织和社区的引用指南、相关项目和知识库的支持、人员培训、贡献分配和奖励计划的实施、软件引用文件的提供等实践为软件引用规范的建立奠定了良好的基础,但尚需软件引用利益相关者通力协作、共同克服面对的困难和挑战。S 相似文献
9.
统计发现2017年1月—2019年12月3大中文数据库共撤销54篇论文。撤销声明中撤销主体还算明确,但存在撤销原因不清晰问题;数据库存在撤销发布形式不统一,一个数据库撤销而另一数据库未撤销现象,易导致继续引用从而使错误信息继续传播。建议国家有关部门尽快对论文撤销声明的要求和格式制订规范,期刊和数据库按照规范提交和处理撤销论文。 相似文献
10.
Using data from Web of Science, this research investigates how physical science researchers funded by the Canadian Institutes of Health Research complied with its open access policy, and compares the citation counts of articles published through gold and green models.It was found that, for articles published between 2008 and 2015, 9% were available through gold open access routes and 13% were available through green routes; most were not openly accessible. Citation rates were comparable for green open access and non-open access articles, but citation rates for gold open access articles were lower. After controlling for publication year, citation rates of gold, green, and non-open access articles were comparable. Among gold open access articles, citation rates were highest for open access journals with article processing charges, but after controlling for publication year, articles published in hybrid journals, followed by those in open access journals with article processing charges, achieved the highest citation rates. Articles published in free open access journals had the lowest citation rates. The results suggest that green open access is the most economical approach to comply with open access policies, and that it provides researchers with at least as much research impact as gold open access. 相似文献
11.
Melissa Gomis Carole Gall Frances A. Brahmi 《Medical reference services quarterly》2013,32(3):260-271
ABSTRACT The authors of this article analyzed the differences in output when searching MEDLINE direct and MEDLINE via citation management software, EndNote X1®, EndNote Web®, and RefWorks©. Several searches were performed on Ovid MEDLINE and PubMed directly. These searches were compared against the same searches conducted in Ovid MEDLINE and PubMed using the search features in EndNote X1, EndNote Web, and RefWorks. Findings indicated that for in-depth research users, should search the databases directly rather than through the citation management software interface. The search results indicated it would be appropriate to search databases via citation management software for citation verification tasks and for cursory keyword searching. 相似文献
12.
Lutz Bornmann Werner Marx Hermann Schier Erhard Rahm Andreas Thor Hans-Dieter Daniel 《Journal of Informetrics》2009,3(1):27-35
Examining a comprehensive set of papers (n = 1837) that were accepted for publication by the journal Angewandte Chemie International Edition (one of the prime chemistry journals in the world) or rejected by the journal but then published elsewhere, this study tested the extent to which the use of the freely available database Google Scholar (GS) can be expected to yield valid citation counts in the field of chemistry. Analyses of citations for the set of papers returned by three fee-based databases – Science Citation Index, Scopus, and Chemical Abstracts – were compared to the analysis of citations found using GS data. Whereas the analyses using citations returned by the three fee-based databases show very similar results, the results of the analysis using GS citation data differed greatly from the findings using citations from the fee-based databases. Our study therefore supports, on the one hand, the convergent validity of citation analyses based on data from the fee-based databases and, on the other hand, the lack of convergent validity of the citation analysis based on the GS data. 相似文献
13.
Marta Somoza‐Fernández Josep‐Manuel Rodríguez‐Gairín Cristóbal Urbano 《Learned Publishing》2018,31(3):199-204
The Emerging Sources Citation Index (ESCI) was created recently, in 2015, but few assessments of its journal coverage have been made. The present study tries to fill that gap by comparing its coverage with that of other international abstracting and indexing (A&I) databases. Using this measure, it is feasible to benchmark this index against the other citation indexes for acceptance criteria. We analysed 6,296 ESCI‐indexed journals, 8,889 Science Citation Index Expanded (SCIE), 3,258 Social Science Citation Index (SSCI), 1,784 Arts and Humanities Citation Index (AHCI), and 22,749 Scopus journals as indexed in July 2017 to determine their inclusion in 105 databases. We found that 19.3% of the ESCI journals are not covered by any other A&I databases, a high figure compared with only 0.5% SCIE, 0.3% SSCI, 0.3% AHCI, and 5.5% Scopus journals. This low coverage suggests that the selection criteria for ESCI journals are not consistent with the overall trend in the other classical citation indexes. 相似文献
14.
[目的/意义]近年来，围绕着专利引文网络结构特征的研究出现大量的研究成果，这些成果都从某种程度上折射出专利引文关系的形成受到来自属性特征之外关系特征的影响，而现有的以回归方法为基础的统计推断方法难以将这些因素纳入到分析框架中，因此，急需探索新的方法。[方法/过程]从关系形成视角，专利引用关系形成可表示三种广义的关系形成过程：自组织影响过程、自身属性影响过程、网络协变量影响过程，并建立关系形成过程与网络配置间的映射关系，最终，形成一整套可用于理解复杂专利引用关系形成问题的解释框架。[结果/结论]提出一整套可用于理解复杂专利引用关系形成问题的解释框架，该框架是未来进一步构建网络统计模型的理论基础，另外，解释框架包含丰富的网络配置项，预示着未来指数随机图模型在文献计量、科学网络分析上广阔的应用前景。 相似文献
15.
Hailey MOONEY 《Learned Publishing》2011,24(2):99-108
It is expected that authors will provide citations for all papers referenced in their writings. The necessity of providing citations for data is not so widely recognized. Proponents of the data‐sharing movement have advocated the citation of datasets in order to recognize contributions and enhance access. This study examines a sample of papers from the Inter‐University Consortium for Political and Social Research (ICPSR) Bibliography of Data‐Related Literature that are based on secondary analysis of datasets available in the ICPSR data archive to determine the data citation practices of authors. The results indicate that many authors fail to cite the data used in secondary analysis studies. Possible reasons for the dismal state of data citation practices are considered, including the recent introduction of data into the scholarly record and its marginalization as an information format. Updating citation practices to include datasets will support data sharing and foster responsible scholarship. 相似文献
16.
17.
Using 17 open-access journals published without interruption between 2000 and 2004 in the field of library and information science, this study compares the pattern of cited/citing hyperlinked references of Web-based scholarly electronic articles under various citation ranges in terms of language, file format, source and top-level domain. While the patterns of cited references were manually examined by counting the live hyperlinked-cited references, the patterns of citing references were examined by using the cited by tag in Google Scholar. The analysis indicates that although language, top-level domain, and file format of citations did not differ significantly for articles under different citation ranges, sources of citation differed significantly for articles in different citation ranges. Articles with fewer citations mostly cite less-scholarly sources such as Web pages, whereas articles with a higher number of citations mostly cite scholarly sources such as journal articles, etc. The findings suggest that 8 out of 17 OA journals in LIS have significant research impact in the scholarly communication process. 相似文献
18.
《Journal of Informetrics》2007,1(1):16-25
We propose a simple stochastic model for an author's production/citation process in order to investigate the recently proposed h-index for measuring an author's research output and its impact. The parametric model distinguishes between an author's publication process and the subsequent citation processes of the published papers. This allows us to investigate different scenarios such as varying the production/publication rates and citation rates as well as the researcher's career length. We are able to draw tentative results regarding the dependence of Hirsch's h-index on each of these fundamental parameters. We conjecture that the h-index is, according to this model, (approximately) linear in career length, log publication rate and log citation rate, at least for moderate citation rates. 相似文献
19.
《Journal of Informetrics》2022,16(1):101241
Usage of field-normalized citation scores is a bibliometric standard. Different methods for field-normalization are in use, but also the choice of field-classification system determines the resulting field-normalized citation scores. Using Web of Science data, we calculated field-normalized citation scores using the same formula but different field-classification systems to answer the question if the resulting scores are different or similar. Six field-classification systems were used: three based on citation relations, one on semantic similarity scores (i.e., a topical relatedness measure), one on journal sets, and one on intellectual classifications. Systems based on journal sets and intellectual classifications agree on at least the moderate level. Two out of the three sets based on citation relations also agree on at least the moderate level. Larger differences were observed for the third data set based on citation relations and semantic similarity scores. The main policy implication is that normalized citation impact scores or rankings based on them should not be compared without deeper knowledge of the classification systems that were used to derive these values or rankings. 相似文献
20.
Scopus and Web of Science are the two major citation databases that collect and disseminate bibliometric statistics about research articles, journals, institutions, and individual authors. Liaison librarians are now regularly called upon to utilize these databases to assist faculty in finding citation activity on their published works for tenure and promotion, grant applications, and more. But questions about the accuracy, scope, and coverage of these tools deserve closer scrutiny. Discrepancies in citation capture led to a systematic study on how Scopus and Web of Science compared in a real-life situation encountered by liaisons: comparing three different disciplines at a medical school and nursing program. How many articles would each database retrieve for each faculty member using the author-searching tools provided? How many cited references for each faculty member would each tool generate? Results demonstrated troubling differences in publication and citation activity capture between Scopus and Web of Science. Implications for librarians are discussed. 相似文献