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1.
The launch of Google Scholar Metrics as a tool for assessing scientific journals may be serious competition for Thomson Reuters' Journal Citation Reports, and for the Scopus‐powered Scimago Journal Rank. A review of these bibliometric journal evaluation products is performed. We compare their main characteristics from different approaches: coverage, indexing policies, search and visualization, bibliometric indicators, results analysis options, economic cost, and differences in their ranking of journals. Despite its shortcomings, Google Scholar Metrics is a helpful tool for authors and editors in identifying core journals. As an increasingly useful tool for ranking scientific journals, it may also challenge established journals products. 相似文献
2.
Ann Barrett Melissa Helwig Karen Neves 《Journal of the Medical Library Association》2016,104(2):118-124
Objectives
This study describes the literature of hospital pharmacy and identifies the journals most commonly cited by authors in the field, the publication types most frequently cited, the age of citations, and the indexing access to core journals. The study also looks at differing citation practices between journals with a wide audience compared to a national journal with a focus on regional issues and trends in the field.Method
Cited references from five discipline-specific source journals were collected and analyzed for publication type and age. Two sets were created for comparison. Bradford''s Law of Scattering was applied to both sets to determine the most frequently cited journals.Results
Three-quarters of all cited items were published within the last 10 years (71%), and journal articles were the most heavily cited publication type (n=65,760, 87%). Citation analysis revealed 26 journal titles in Zone 1, 177 journal titles in Zone 2, and the remaining were scattered across 3,886 titles. Analysis of a national journal revealed Zone 1 comprised 9 titles. Comparison of the 2 sets revealed that Zone 1 titles overlapped, with the exception of 2 titles that were geographically focused in the national title.Conclusion
Hospital pharmacy literature draws heavily from its own discipline-specific sources but equally from core general and specialty medical journals. Indexing of cited journals is complete in PubMed and EMBASE but lacking in International Pharmaceutical Abstracts. Gray literature is a significant information source in the field. 相似文献3.
Ana G Ugaz 《Journal of the Medical Library Association》2011,99(2):145-152
Objective:
The paper analyzes the journal evaluation criteria used to create the third edition of a core list of veterinary serials to determine the impact of each criterion on the final composition of the list in order to assess the value of using multiple criteria in creating a core list.Methods:
Three additional lists were generated from criteria that were previously combined to prepare the third edition of the “Basic List of Veterinary Medical Serials”: a list based on journal recommendations from veterinary specialty organizations, another list based on journals selected by veterinary librarians, and a list based on both indexing coverage and scholarly rank. The top fifteen journals in each of the three lists were then compared to reveal potential biases. Subject representation on the full lists generated by each of these methods was also compared.Results:
The list based on journal recommendations from veterinary specialty organizations exhibited a focus on clinically relevant titles. The list based on veterinary librarian recommendations resulted in the broadest subject coverage. The list based on indexing and scholarly rank, while emphasizing research titles, produced the largest number of unique titles.Conclusion:
A combination approach that includes objective evaluation measures and practical input, whether from librarians or discipline experts, can improve coverage and can result in a list that balances research-based with clinical practice journals.Highlights
- Analysis of criteria used to create the “Basic List of Veterinary Medical Serials” reveals biases inherent in different quality measures that result in different journal emphases.
- Use of indexing or scholarly rank is often thought of as a limiting factor, but in this study, the journals that were scored solely on these two criteria resulted in the inclusion of the greatest number of unique titles.
- Librarian input produced the broadest subject coverage of any list.
Implications
- An analysis of the strengths and weaknesses of various methodologies reveals clear evidence for using both objective and subjective criteria in developing a core list. Collection development decisions would equally benefit from this approach.
- Comparison of the top titles on core lists underscores the value of input from practitioners or discipline experts in collection decisions.
- Bias toward clinical content revealed in the input from the veterinary specialty organizations indicates the importance of understanding the purpose and compilation methods used in creating recommended lists before using them in collection development.
4.
Many journals post accepted articles online before they are formally published in an issue. Early citation impact evidence for these articles could be helpful for timely research evaluation and to identify potentially important articles that quickly attract many citations. This article investigates whether Microsoft Academic can help with this task. For over 65,000 Scopus in-press articles from 2016 and 2017 across 26 fields, Microsoft Academic found 2–5 times as many citations as Scopus, depending on year and field. From manual checks of 1122 Microsoft Academic citations not found in Scopus, Microsoft Academic’s citation indexing was faster but not much wider than Scopus for journals. It achieved this by associating citations to preprints with their subsequent in-press versions and by extracting citations from in-press articles. In some fields its coverage of scholarly digital libraries, such as arXiv.org, was also an advantage. Thus, Microsoft Academic seems to be a more comprehensive automatic source of citation counts for in-press articles than Scopus. 相似文献
5.
在中国学术期刊全文数据库中,对农业科技类目中农艺学、植物保护、农作物和园艺4个学科领域刊文的 相似文献
6.
Stevens SR 《Bulletin of the Medical Library Association》2000,88(2):172-177
The major purpose of this study was to identify and assess indexing coverage of core journals in cytotechnology. It was part of a larger project sponsored by the Nursing and Allied Health Resources Section of the Medical Library Association to map the literature of allied health. Three representative journals in cytotechnology were selected and subjected to citation analysis to determine what journals, other publication types, and years were cited and how often. Bradford's Law of Scattering was applied to the resulting list of cited journals to identify core titles in the discipline, and five indexes were searched to assess coverage of these core titles. Results indicated that the cytotechnology journal literature had a small core but wide dispersion: one third of the 21,021 journal citations appeared in only 3 titles; another third appeared in an additional 26 titles; the remaining third were scattered in 1,069 different titles. Science Citation Index Expanded rated highest in indexing coverage of the core titles, followed by MEDLINE, EMBASE/Excerpta Medica, HealthSTAR, and Cumulative Index to Nursing and Allied Health Literature (CINAHL). The study's results also showed that journals were the predominantly cited format and that citing authors relied strongly on more recent literature. 相似文献
7.
目的：比较SCIE、Scopus与SciFinder的收录范围、检索结果与引证关系。方法：对3个数据库的基本信息、引证分析功能,以及从关键词、机构与期刊名称3个字段进行实例检索得到的结果进行对比分析。结果：SCIE入选期刊最严格,Scopus收录期刊最多,SciFinder文献类型最全面。结论：SciFinder作为专业检索数据库,检索课题更全面,对检索结果的处理功能更强大。SCIE和Scopus更侧重期刊评价和引文分析,方便特定课题的溯源与追踪,也是写作和投稿很好的参考工具。 相似文献
8.
《Journal of Informetrics》2014,8(1):1-12
A system of four research levels, designed to classify scientific journals from most applied to most basic, was introduced by Francis Narin and colleagues in the 1970s. Research levels have been used since that time to characterize research at institutional and departmental levels. Currently, less than half of all articles published are in journals that been classified by research level. There is thus a need for the notion of research level to be extended in a way that all articles can be so classified. This article reports on a new model – trained from title and abstract words and cited references – that classifies individual articles by research level. The model covers all of science, and has been used to classify over 25 million articles from Scopus by research level. The final model and set of classified articles are further characterized. 相似文献
9.
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
10.
This is an annotated bibliography of peer-reviewed scholarly journals that are currently published in Iran. The titles included are a selective and representative sampling. The entry for each periodical includes the following information: title, subject, date founded, frequency, editor, price, language, publisher, address, phone number, FAX number, Web address, ISSN, circulation, indexing/abstracting sources, impact factor, ministry, and an abstract/annotation. 相似文献
11.
In this paper we map the scientific journals from Ibero‐American countries indexed in the Web of Science and Scopus. Data were collected from the journals' websites. Of 879 journals in the two databases, Spain accounted for 35.6% of the titles, Brazil 28.5%, and the remaining 11 countries together 35.9%. Medicine had the most titles in almost all countries, with 28.9% of the total, followed by agricultural and biological sciences (particularly in Brazil) with 14.9%, and social sciences with 11.5%. A digital format was used by 95% of the journals and 82% were open access, with an even higher level of open access in Latin America. The publishers were mainly universities (37.7%) and associations (31.1%). Ibero‐American countries, with the exception of Spain, do not have a long tradition as scientific journal publishers, but in the last few years they have gained in importance as players in scientific communication with the use of new business models for journals. 相似文献
12.
《期刊图书馆员》2013,64(3):147-153
ABSTRACT Scopus is a new all-science abstracting and indexing (A&I) database. It is the result of a two-year collaboration with librarians and researchers from all over the world. Scopus covers over 14,000 scientific, technical, medical and social science titles from 4,000 publishers. It offers new sorting and refining features so that researchers can easily find and access more than 27 million abstracts and citations stretching back to the mid-1960s. This article recounts the development of Scopus from its inception in 2002 to its success in securing over 100 customers within weeks of its recent launch. The story is told by one of the librarians heavily involved in testing and shaping the product and by one of the Product Managers who built it. 相似文献
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14.
A Haaland 《Bulletin of the Medical Library Association》1999,87(3):283-286
Despite the long history of the dental hygiene profession, little research has been conducted on the characteristics of its literature. In this study, the bibliometric method was used to identify the core journals in the discipline and the extent of indexing of these journals. The study was a part of the Medical Library Association (MLA) Nursing and Allied Health Resources Section's project to map the allied health literature. Five journals were found to provide one-third of all references studied. Forty-two journals yielded an additional one-third of the references. MEDLINE had the best indexing coverage with 87% of the journals receiving indexing for at least one-half of the articles included. Limited coverage was provided by EMBASE/Excerpta Medica (11%) and the Cumulative Index to Nursing and Allied Health Literature (9%). The findings identified titles that should be added by indexing services as well as those that should have more complete coverage. 相似文献
15.
通过对2013年1 919种以中文出版的中国科技核心期刊刊名的分析研究,发现我国科技期刊的命名规律是以学科主题属性为核心的"三段式"命名规律,通常依次由限定词、学科主题属性、文献属性3部分组合构成。限定词包括地域限定词、时间限定词、其他限定词3类;学科主题属性按照覆盖范围划分为一级学科、二级学科、三级及以下学科、多学科4个类别;文献属性归为研究前沿与进展快报类文献、研究成果文献、综述评述类文献3类。研究发现:我国核心期刊的命名约2/3聚焦于三级及以下学科主题;一些限制词和文献属性与期刊实际定位之间存在差距;设计标新立异的刊名是可以肯定的积极探索,但是存在使用国际名刊的刊名、使用标点符号和拉丁字母等设计误区。 相似文献
16.
[目的/意义]近年来，热点论文逐渐受到学术界重视，为数不多的研究成果已开始探索热点论文自身的特征，但在影响因素等规律方面的研究工作尚不充分。[方法/过程]本研究利用TF-IDF算法和负二项回归模型，试图探究热点论文的分布特征、影响因素、时间窗口差异和学科类型差异。[结果/结论]研究结果表明，热点论文的分布特征侧重于发达国家、知名研究机构、交叉学科和权威期刊；并且受到精炼的标题、国家间合作、研究型产出、开放获取、高影响因子期刊等因素影响；热点论文存在时间窗口效应，甚至改变了标题、摘要、开放获取等因素影响热点论文的具体轨迹；学科间差异对热点论文具有影响，在标题、摘要、科研合作、文献类型、开放获取、期刊影响因子方面均存在差异。 相似文献
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18.
运用数据库定量分析遴选英文科技期刊编委 总被引：1，自引：1，他引：0
编委会对科技期刊的发展起着至关重要的作用。组建一支优质而高效的编委会队伍可以为打造优秀科技期刊奠定坚实的基础。本文以《仿生工程学报》编委会换届筹备为例,借鉴国外同领域竞争期刊的编委会构成特点,探讨适合我国英文科技期刊的编委遴选的新方法。实践表明,灵活运用Web of Science、Scopus等网络文献数据库,不仅可以对备选编委的学术影响力、学术活跃度等进行定量评估,还可以挖掘有潜力的新编委。备选编委定量评价体系的建立能够为编委会换届改选提供重要的理论依据。 相似文献
19.
Ioana Robu Denisa Marineanu Ileana Aciu Sally Wood‐Lamont 《Health information and libraries journal》2001,18(2):91-98
The paper articulates the problems of journal publication in a relatively small country such as Romania where locally (i.e. nationally) published journals include most of the national medical scientific output. The starting point was a study ordered by the Cluj University of Medicine and Pharmacy Scientific Council, for the purpose of obtaining an objectively ranked list of all current Romanian biomedical journals that could be used in the evaluation of the scientific activity of the university academic staff. Sixty‐five current biomedical journals were identified—of which more than half were new titles that had appeared over the past 5 years. None of these are included in the Science Citation Index or Journal Citation Reports (JCR). A set of criteria was used for ranking the journals: peer review, inclusion in international databases, publication time lag, language of articles and abstracts, journal specific index and domestic impact factor. The period covered, along with tools and formulas used are presented. The problems of Romanian biomedical journals as well as ways of improving publishing standards are discussed. Also emphasized is the necessity for increased awareness in the medical scholarly community and the role of the library in this respect. 相似文献
20.
《Journal of Informetrics》2014,8(2):369-383
Subject classification arises as an important topic for bibliometrics and scientometrics, searching to develop reliable and consistent tools and outputs. Such objectives also call for a well delimited underlying subject classification scheme that adequately reflects scientific fields. Within the broad ensemble of classification techniques, clustering analysis is one of the most successful.Two clustering algorithms based on modularity – the VOS and Louvain methods – are presented here for the purpose of updating and optimizing the journal classification of the SCImago Journal & Country Rank (SJR) platform. We used network analysis and Pajek visualization software to run both algorithms on a network of more than 18,000 SJR journals combining three citation-based measures of direct citation, co-citation and bibliographic coupling. The set of clusters obtained was termed through category labels assigned to SJR journals and significant words from journal titles.Despite the fact that both algorithms exhibited slight differences in performance, the results show a similar behaviour in grouping journals. Consequently, they are deemed to be appropriate solutions for classification purposes. The two newly generated algorithm-based classifications were compared to other bibliometric classification systems, including the original SJR and WoS Subject Categories, in order to validate their consistency, adequacy and accuracy. In addition to some noteworthy differences, we found a certain coherence and homogeneity among the four classification systems analysed. 相似文献