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1.
R J Sekerak 《Bulletin of the Medical Library Association》1986,74(3):231-233
An overlap study was performed to identify important psychology journals that are also of interest to biomedical scientists and health care practitioners. The journal lists of Index Medicus, Hospital Literature Index, Cumulative Index to Nursing and Allied Health Literature, and International Nursing Index were compared with the journal list of Psychological Abstracts. A total of 357 Psychological Abstracts titles were also in one or more of the health sciences indexes. A core list of forty-five titles covered by all of the indexes is presented in the Appendix. Results of the study are discussed vis-à-vis cooperative serials acquisition and retention efforts. 相似文献
2.
S D Truelson 《Bulletin of the Medical Library Association》1966,54(4):329-336
The main criterion for selecting journals for indexing in Index Medicus, and thereby largely in MEDLARS, is quality. Subject scope varies with the voiced needs of the biomedical community. The Index aims to cover the best journals in all relevant subject fields, but the percentage of journals on a subject indexed depends on the quality of each journal. Country and language coverage depends on quality, even in the case of the best journals of each, although American biases may affect such selection. While a number of guidelines exist for identifying quality journals, information necessary to apply them confidently is often difficult to obtain. The National Library of Medicine is advised by an Ad Hoc Panel on the Selection of Journals for Index Medicus, composed both of NLM officers and extramural members. Criticism has been voiced that too many titles are indexed, compared with titles actually used, but no meaningful statistics of use exist which can identify titles which should be excluded from indexing. Continuing suggestions from users regarding titles indexed would benefit everyone. 相似文献
3.
CSSCI的研究成功对于人文社会科学文献检索以及促进相关学科核心期刊的形成具有重要意义.针对CSSCI收录的管理学领域25种学术期刊,采用引文分析方法中的影响因子、总被引频次、被引期刊数、5年影响因子、即年指数、被引半衰期、他引率、指数、Web即年下载量、载文量、基金论文比指标对其进行全面的单指标学术影响力分析,根据引文分析评价指标及期刊实际数据,采用层次分析方法对CSSCI收录的管理学领域学术期刊进行综合评价,在此基础上,指出管理学CSSCI检索期刊学术影响力分析中反映出的问题,并给出改进建议. 相似文献
4.
Rada RF 《Health information and libraries journal》2007,24(3):210-215
OBJECTIVES: To explore how often newspapers cover the retraction of a medical journal article and whether newspaper coverage corresponds with the appearance of a press release about the retraction. METHODS: Fifty citations were identified in PubMed that had been indexed with the Medical Subject Heading 'Retracted Publication'. Next, the archives of LexisNexis's 'Major Newspapers' and EurekAlert's press releases were searched to find references to those retracted publications. RESULTS: Newspaper articles addressed exactly three of the 50 retracted publications, and press releases, exactly four of the 50 retracted publications. All three retracted publications that received newspaper coverage also had a press release. In other words, newspapers only covered a retraction that had been introduced by a press release. CONCLUSION: One would expect that newspaper coverage would increase after a press release, but the suggested relationships among a medical journal article retraction, a press release and newspaper coverage should be further investigated. If the linkage suggested by the data of this study holds, and if newspaper coverage stimulates library patron interest, then a medical library might prepare itself for information requests following a press release. 相似文献
5.
Mike Thelwall 《Journal of Informetrics》2018,12(1):1-9
Microsoft Academic is a free academic search engine and citation index that is similar to Google Scholar but can be automatically queried. Its data is potentially useful for bibliometric analysis if it is possible to search effectively for individual journal articles. This article compares different methods to find journal articles in its index by searching for a combination of title, authors, publication year and journal name and uses the results for the widest published correlation analysis of Microsoft Academic citation counts for journal articles so far. Based on 126,312 articles from 323 Scopus subfields in 2012, the optimal strategy to find articles with DOIs is to search for them by title and filter out those with incorrect DOIs. This finds 90% of journal articles. For articles without DOIs, the optimal strategy is to search for them by title and then filter out matches with dissimilar metadata. This finds 89% of journal articles, with an additional 1% incorrect matches. The remaining articles seem to be mainly not indexed by Microsoft Academic or indexed with a different language version of their title. From the matches, Scopus citation counts and Microsoft Academic counts have an average Spearman correlation of 0.95, with the lowest for any single field being 0.63. Thus, Microsoft Academic citation counts are almost universally equivalent to Scopus citation counts for articles that are not recent but there are national biases in the results. 相似文献
6.
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
7.
V. M. Efremenkova N. V. Krukovskaya 《Scientific and Technical Information Processing》2007,34(6):328-334
The history of the emergence and development of the abstracting journal Chemical Abstracts is considered starting from its first printed issue up to the present time. At present, the well-known Chemical Abstracts Service (CAS) offers a wide range of information resources, including such massive databases (databases) as: CA/CAPlus (～27 million abstracts), the CAS Registry (～31 million organic and inorganic substances [compounds], ～58 million biological sequences), CASREACT (～13 million organic [chemical] reactions), CHEMCATS (～14 million entries of commercially available chemicals and their suppliers), CHEMLIST (～245 thousand high-priority industrial chemicals, their storage and transportation regulations [restrictions]), MARPAT (the CAS Markush database containing the keys to generic substances in patents), as well as specialty-specific [subject-oriented] issues of CA SELECT, the Chemical Abstracts Service Source Index (CASSI) list of journals, and many others. Information retrieval systems are presented that provide access to CAS databases, viz., the STN International and SciFinder. 相似文献
8.
With the growing predominance of full-text databases, publisher’s searchable websites, Discovery systems, and Google, abstract and index (A&I) databases are becoming less prominent in the academic library’s collection. The A&I databases enable the serious researcher to more carefully refine their search, but given the users’ growing expectations of ease and “good enough,” this may be a need that is of less importance today. For this reason and given the decreasing budgets for collections, librarians are looking at these resources with a more skeptical eye. In addition to traditional evaluation measures, such as costs, usage, and faculty input, we looked at the overlap of indexing coverage. Those who have conducted such overlap studies have approached them at either the journal or article level. Article-level overlap studies demonstrate coverage of selected articles in the databases under study. Conversely, journal-level studies examine the extent of indexing of journals among the selected databases. Both methods are time-consuming and require extensive resources. A simplification of the journal-level method is to compare lists of journals indexed. 相似文献
9.
Mohammad Reza Ghane 《Learned Publishing》2016,29(2):77-82
The references cited in scientific articles are as important as any other part of the paper, because of their usefulness to the scientific community and to abstracting and indexing services and citation databases. I studied inaccuracies in references and in‐text citations in sample of 97 of the 519 peer‐reviewed journals accredited by the Iranian National Commission for Journal Accreditation Policy (Ministry of Research, Science and Technology). The target journals published 2,980 articles with 74,577 cited references and 108,151 in‐text citations. The results showed 36.6% as the average percentage error rate (range 5.6% to 61.3%). The mean number of errors in cited reference and in‐text citations was 2.7 per article, and the mean number of errors per journal was 690. For the entire sample of articles, 4,369 in‐text citations did not match any source in the list of references (4%), and 8,683 cited references did not match any in‐text citation (11.6%). The stakeholders in scholarly communication, especially authors, pay insufficient attention to the accuracy of bibliographic references. Peer‐reviewed journals should encourage the use of standardized journal policies and quality‐control measures regarding peer review, data quality and accuracy. 相似文献
10.
Alena Wolotira 《Legal Reference Services Quarterly》2013,32(2):150-183
Using the lists of journals indexed in the Current Index to Legal Periodicals from the last fifty years, this article analyzes the increase in the number of general law reviews, specialized law journals, student-edited journals, and peer-edited and refereed law journals during the last half-century. Data from the Current Index to Legal Periodicals were combined with further data collected from HeinOnline, American Bar Association (ABA) statistics, and U.S. News & World Report statistics. Comparison of these data not only shows a massive increase in the number of law journal titles being published but also suggests a correlation between the number of law journals published by a law school and its student population, length of time that it has been accredited by the ABA, and its U.S. News & World Report ranking. This article also contains a list of all law journals currently indexed by the Current Index to Legal Periodicals including each journal's date of initial publication, in addition to a list of all print student-edited law journals published by ABA-accredited and provisionally accredited U.S. law schools. 相似文献
11.
K L Reed 《Bulletin of the Medical Library Association》1999,87(3):298-304
Occupational therapy, formally organized in the United States in 1917, is considered an allied health field. Mapping occupational therapy literature is part of a bibliometric project of the Medical Library Association's Nursing and Allied Health Resources Section's project for mapping the literature of allied health. Three core journals were selected from the years 1995 and 1996 and a determination was made of the extent to which the cited journal references were covered by standard indexing sources. Using Bradford's Law of Scattering three zones were created, each containing approximately one-third of the cited journal references. The results showed that three journals made up the first zone, 117 journals the second, and 657 the third. The most cited journal was the American Journal of Occupational Therapy. In the second zone, journals from twelve disciplines were identified. While MEDLINE provided the best overall indexing, the Cumulative Index to Nursing and Allied Health Literature (CINAHL) was the only database that indexed the three most cited journals plus nine of the currently active titles in occupational therapy. MEDLINE could improve its coverage of occupational therapy by indexing the journals of the British, Canadian, and Australian national associations. 相似文献
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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。 相似文献
14.
《Behavioral & Social Sciences Librarian》2013,32(4):33-43
References indexed for the Australian Education Index (AEI) were sampled and compared where possible with the same references indexed for the ERIC and Australian Public Affairs Information Service (APAIS) database. An analysis of coverage of Australian references is presented. Indexing consistency figures for these references are shown to be 22% for ERIC/AEI and 18% for AEI/APAIS. In-depth searches for Australian material in education need to be run against both AEI and APAIS. A broad generic and free text approach is indicated for effective recall. 相似文献
15.
《Journal of Informetrics》2014,8(4):951-962
In this study, we identified and analyzed characteristics of top-cited single-author articles published in the Science Citation Index Expanded from 1991 to 2010. A top-cited single-author article was defined as an article that had been cited at least 1000 times from the time of its publication to 2012. Results showed that 1760 top-cited single-author articles were published in 539 journals listed in 130 Web of Science categories between 1901 and 2010. The top productive journal was Science and the most productive category was multidisciplinary physics. Most of the articles were not published in high-impact journals. Harvard University led all other institutions in publishing top-cited single-author articles. Nobel Prize winners contributed 7.0% of articles. In total, 72 Nobel Prize winners published 124 single-author articles. Single-authored papers published in different periods exhibited different patterns of citation trends. However, top-cited articles consistently showed repetitive peaks regardless of the time period of publication. “Theory (or theories)” was the most frequently appeared title word of all time. Leading title words varied at different time periods, and only five title words, method(s), protein(s), structure(s), molecular, and quantum consistently remained in the top 20 in different time periods. 相似文献
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One of the main applications of citation is to find articles that are relevant to a particular article. However, not all citations are equally relevant to the target article. This paper presents an approach to identify the most relevant citation(s). To this end, the Normalized Similarity Index (NSI) is proposed to quantify the similarity between the source and target of a citation base on the co-citations and references shared by them. To validate the method, NSI was calculated for five citation networks and was compared with the peer review grades for the relevancy between the source and the target articles. The results showed a significant correlation between the NSI ranks and those of peer review. Also, combined linkage (CL) and weighted direct citation (WDC) were calculated from the same data. According to the results of comparison between the NSI with other similarity measures, in most cases, NSI did better than others at reproducing the peer rankings. Our principal conclusion is that the NSI can be used to prioritize the citations of given highly cited article, and represent knowledge flow from the target article. 相似文献
18.
《The Reference Librarian》2013,54(49-50):95-104
Decades of research on the information-seeking behavior of scientists have shown heavy reliance on informal communication and personal collections. Entry into the literature is often gained through references in journal articles and other primary literature. This paper discusses these behaviors and some reasons for their use. Improvements in reference services to the scientific user community must be based on an understanding of scientific communication, information-seeking behavior, and the information needs of the user. Examples of user-oriented reference service are given. 相似文献
19.
从2000—2009年我国在SCI收录期刊发表的论文数据看SCI对我国科技期刊的影响 总被引：6，自引：2，他引：4
为探讨SCI对我国科技期刊的影响,比较SCI和CST-PCD收录论文的变化趋势。2000年SCI收录期刊刊出我国科技论文3万1 040篇,其后逐年上升,到2009年增加到12万6 249篇,增加了306.73%,较同期CSTPCD收录期刊刊出的我国论文增加百分比(190.20%)高出116.53百分点。10年来,SCI期刊收录的中国论文的几何平均增长速度为16.86%,CSTPCD的几何平均增长速度为11.24%;发表在SCI期刊上的中国论文影响因子≤2的论文数平均为72.21%,≤3平均为85.42%。10年来,我国在SCI收录期刊发表的中国论文数量逐年上升,增加幅度明显高于CSTPCD,但其影响力有限。要区别对待SCI期刊,控制在影响因子≤3的SCI期刊上发表论文,鼓励在>5的SCI期刊上发表论文。 相似文献
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通过查阅被Medline收录英文摘要的中文医学专业期刊<中华妇产科杂志><中华儿科杂志><中国当代儿科杂志>,探讨论文摘要的数据准确性问题.从2006年全年每种期刊中随机抽取30篇论文,用统计软件进行统计分析.摘要中的数据与全文不同或者在全文中不存在,即认为该摘要为缺陷摘要.发现这3种期刊缺陷摘要的百分比分别为23%、37%和13%,各比值间无统计学差异(P>0.05).结果表明,摘要数据与全文不符或者全文中不存在的现象是比较普遍的,这可能会带来一定程度的误解和误导.应引起编辑同人的重视. 相似文献