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1.
E F Hall 《Bulletin of the Medical Library Association》1999,87(3):305-311
Perfusionists select and operate the equipment necessary for monitoring, supporting, or temporarily replacing the patient's circulatory or respiratory function. There are over 3,000 perfusionists working in U.S. hospitals, medical and perfusionist groups, and as independent contractors. The purpose of this study was to identify the core literature of perfusion and to determine which major databases provide the most thorough access to this literature. This paper is part of the Medical Library Association Nursing and Allied Health Resource Section's project to map the literature of the allied health professions. It uses a bibliometric methodology to identify core journals. A group of forty-three journals was determined to make up the core journal literature of perfusion. MEDLINE provided the best overall indexing coverage for these journals, but librarians and perfusionists will wish to supplement its use with the Cumulative Index to Nursing and Allied Health Literature in order to access the journals written primarily for perfusionists. The study results can guide purchasing and database searching decisions of collection development and reference librarians, encourage the database producer to increase coverage of titles that are unindexed or underindexed, and advise perfusionists of the best access to their core literature. 相似文献
2.
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
3.
4.
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
5.
Carmen Cole Angela R. Davis Vanessa Eyer John J. Meier 《The Journal of Academic Librarianship》2018,44(3):419-425
In 2008 Meier and Conkling first tested Google Scholar's coverage of the engineering literature against citations gathered from the Compendex database. Since that time, other studies have used the same methodology and found improvement in Google Scholar's coverage. This study uses engineering dissertations from Proquest Dissertations & Theses to create a data set of citations for the comparison of fee-based databases, Compendex and Scopus, against Google Scholar. From 1950 to 2017 Google Scholar outperformed both Compendex and Scopus in discoverability of citations in nine engineering subjects. These results have implications for collection management and information literacy program planning for librarians. 相似文献
6.
Comparison of bibliographic databases for information on the rehabilitation of people with severe mental illness 总被引：1，自引：0，他引：1
OBJECTIVE: The research sought to examine the overlap in coverage between several health-related databases, thus enabling the identification of the most important sources for searching for information on the rehabilitation of people with severe mental illness. METHODS: The literature was searched within a systematic review. Several health-related databases were retrieved (Cumulative Index to Nursing and Allied Health Literature, The Cochrane Library, MEDLINE, PsycLIT, Sociofile, and Social Science Citation Index), noting their source and comparing results retrieved from each database. FINDINGS: The total number of studies retrieved from each database varied. Almost a third of the papers retrieved from each database were unique to that source. Forty-two percent of the papers were only found in one database. Restricting a search to one database alone would miss many papers and could affect the results of a systematic review. PsycLIT was the most useful database for this topic area, containing 44% of the papers. MEDLINE, the database of first choice for many health professionals, held only 29%. CONCLUSIONS: No database was determined to be significantly more useful than any other--each warranted inclusion in the study. Reliance cannot be placed on one database alone, and other methods such as hand searching should also be used. Although this may not be new information for information professionals, it is likely to be new for health professionals and researchers who are increasingly performing their own literature searches. Information professionals have an important role to play in conveying this message to those outside their profession. 相似文献
7.
EBSCO数据库的综合评价——与ProQuest平台的比较 总被引：2，自引：0，他引：2
EBSCO和ProQuest数据库是目前各图书馆常用的外文数据库。通过对EBSCO数据库和ProQuest数据库的内容、检索系统的比较来看,EBSCO数据库的核心期刊收录比率较高、期刊品种较多、保持更新的全文刊较多、全文期刊收录的时间跨度较长,而且其检索功能和技术相对更强大一些,更有利于精确检索,更能体现专业数据库的特殊性。在数据库的使用方面,各个图书馆可根据自己的使用情况核算成本,应选择数据库内容和检索系统收录质量较高、综合优势较强的平台。 相似文献
8.
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
9.
《The Journal of Academic Librarianship》2020,46(5):102190
Comprehensive yet efficient search methods are essential for any systematic or scoping review. This article outlines the stages of development of a systematic search methodology for a scoping review within the library and information science (LIS) literature. The effectiveness of the database search strategies (LISTA, LISA, ERIC, Scopus, Web of Science) and supplemental search techniques are measured through a retrospective analysis of performance metrics. Findings show that for research topics limited to the library setting, it may be more effective to search fewer databases (LISTA and Scopus only) for peer reviewed journal articles and allot more time to alternate search techniques such as web searching to identify non-journal literature. The article provides an evidence-based, methodological approach to developing a systematic search plan, unique to LIS researchers, that accounts for time and resource needs. 相似文献
10.
Librarians have used bibliometrics for many years to assess collections and to provide data for making selection and deselection decisions. With the advent of new technology--specifically, CD-ROM databases and reprint file database management programs--new cost-effective procedures can be developed. This paper describes a recent multidisciplinary study conducted by two library faculty members and one allied health faculty member to test a bibliometric method that used the MEDLINE and CINAHL databases on CD-ROM and the Papyrus database management program to produce a new collection development methodology. 相似文献
11.
全面介绍了解放军医学图书馆最新研发的《中国生物医学期刊引文数据库》机构知识版的新功能。《中国生物医学期刊引文数据库》机构知识版以 RDF 语义对机构、作者、基金、期刊和文献进行了统一描述,以机构库、作者库、基金库、期刊库和文献库为核心,基于文献标注信息对文献内容进行深入挖掘与分析,实现了对生物医学领域的信息资源关联;具备发表文献查询、引文查询、快速出具引证报告等功能,强化了文献计量可视化分析功能,发布各类 TOP 排行统计,推送关联信息,还增加了机构文献管理模块,可为各个机构提供个性化的文献管理和评价服务。 相似文献
12.
This article provides a methodology for evaluating title coverage of full-text periodical databases in relation to a library’s print journal collection. A pretest of that methodology is presented along with a discussion of collection development principles for an effective evaluation of full-text databases. 相似文献
13.
Eldredge JD 《Medical reference services quarterly》2000,19(3):1-18
This paper discusses the challenges of finding evidence needed to implement Evidence-Based Librarianship (EBL). Focusing first on database coverage for three health sciences librarianship journals, the article examines the information contents of different databases. Strategies are needed to search for relevant evidence in the library literature via these databases, and the problems associated with searching the grey literature of librarianship. Database coverage, plausible search strategies, and the grey literature of library science all pose challenges to finding the needed research evidence for practicing EBL. Health sciences librarians need to ensure that systems are designed that can track and provide access to needed research evidence to support Evidence-Based Librarianship (EBL). 相似文献
14.
The MELVYL MEDLINE project resulted in the addition of a full five-year subset of MEDLINE to the University of California's (UC) MELVYL online union catalog. As one of the nation's largest MEDLINE end-user searching systems, MELVYL MEDLINE provides online bibliographic access to the biomedical journal literature for all UC personnel at over seventy library sites or by remote access. This paper summarizes the project's accomplishments, reports MELVYL MEDLINE use and its impact on library services, and provides insights for other end-user search systems. The project serves as a model for adding databases to the MELVYL catalog and demonstrates the potential for use by other disciplines of a specialized database when readily accessible. Evaluation results report high user satisfaction and high usage. However, many advanced searching features of the interface are little used by searchers. Effects on library services include marked increases in reference transactions and interlibrary loans, with significant declines in mediated search services. Future MELVYL MEDLINE enhancements include matching search retrievals to journal locations, linkage to an online document delivery system, and consideration of building a superset of databases by combining MELVYL MEDLINE with citations from another database in the MELVYL catalog. 相似文献
15.
Nicolai Mallig 《Journal of Informetrics》2010,4(4):564-580
In this article a relational database schema for a bibliometric database is developed. After the introduction explaining the motivation to use relational databases in bibliometrics, an overview of the related literature is given. A review of typical bibliometric questions serves as an informal requirement analysis. The database schema is developed as an entity-relationship diagram using the structural information typically found in scientific articles. Several SQL queries for the tasks presented in the requirement analysis show the usefulness of the developed database schema. 相似文献
16.
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
17.
在总结大数据特点的基础上,梳理各科技期刊数据库已经进行的数据收集、数据整合、数据利用等具有前瞻性的基于数据的实践。认为今后科技期刊数据库应注重数据的精化和标准化,积极向信息服务商转型,并始终以大数据的思维来指导实践,从而更好地顺应大数据趋势。 相似文献
18.
[目的/意义]针对外文期刊数据库内容质量的双库与多库指标的量化,提出基于统一期刊空间的多库比较算法,实现任意多库之间的期刊识别和比对,提高这些指标的量化准确度。[方法/过程]在分析外文期刊数据库内容质量指标的内容及其复杂性的基础上,设计基于统一期刊空间的多库比较算法,并利用该算法计算出2018年DRAA中57个数据库的JCR刊数量和独有刊数量指标,作为算法有效性和准确性的验证。[结果/结论]作为各种电子资源评价指标系统的延伸研究,本研究能帮助图书馆优化自己的馆藏建设,使得外刊数据库的采购更加经济、合理。 相似文献
19.
With the goal of building a high quality academic library collection in mind, the Serials Librarian and the Collection Assessment Librarian at Middle Tennessee State University evaluated the value of journal content accessed through a journal aggregator database. Data from EBSCOhost, UlrichsWeb, and Institute for Scientific Information (ISI) Journal Citation Reports were used to evaluate content with respect for subject, quality, and coverage. An important goal of the project was to share the analysis with library liaisons in an effort to assist them with collection development responsibilities. The analysis raises questions about the relationship between discovery, access, and collection development. 相似文献
20.
S A Kelly 《Medical reference services quarterly》1988,7(4):31-45
A search for literature on the relationship between the autonomic nervous system and speech was performed via the DIALOG Information Service on four databases: BIOSIS Previews, EMBASE, MEDLINE, and PsycINFO. A doctoral candidate in the Department of Audiology and Speech Sciences at Purdue University reviewed the citations retrieved for relevancy. Then, the coverage of the relevant literature by the four databases was analyzed. MEDLINE yielded the greatest number of relevant citations followed by EMBASE, BIOSIS, and PsycINFO. The four databases showed little overlap in coverage of citations or journal titles. This study indicates that it would be advantageous to search all four databases for the speech scientist. 相似文献