共查询到18条相似文献，搜索用时 531 毫秒
1.
分别统计并计算了国家科技图书文献中心(NSTL)的13000种西文期刊馆藏与SCI、EI、CABI、MEDLINE四大著名索引系统的收录交叉率,同时将NSTL收录的西文期刊与国外主流文献出版集团Springer、Kluwer、Elsevier、AP、ACS、John Wiley、IOP出版的科技期刊进行了覆盖率计算。 相似文献
2.
3.
4.
关于科技期刊文献库的数据质量问题 总被引：1，自引：0，他引：1
随着计算机技术的发展和应用,我国建立了各种专业性和综合性文献库,为文献资料的存储管理和检索提供了现代化手段。各种专业性期刊和综合性期刊是文献库的信息源,期刊论文的主要信息(标题,文摘,关键词,学科分类等)是文献库的原始信息。期刊上的这些信息是文献库存储器的“底片”,其编辑加工质量如何,将直接影响文献库的数据质量,亦即影响用户的检索效率和效果。从现有的文献库的使用情况看,大部分文献库的数据质量是好的,具有实用性。然而,无庸讳言,有的也存在若干技术问题,特别是数据质量问题,这必须引起我们的高度重视,并采取必要的措施,以确保文献库的数据质量。本文试图结合工作实际,对如何加强文献库的数据质量控制,就其主要信息(标题、关键词、文摘),谈谈自己的看法,与同行们共同讨论。 相似文献
5.
以“联合西文期刊篇名目次数据库”所收录的期刊、所覆盖的参加馆馆藏期刊和9种二次文献所收录的期刊为研究对象,从期刊收录、期刊揭示及馆藏比对等方面,分析“联合西文期刊篇名目次数据库”的期刊资源状况,提出馆藏期刊建设发展的基本思路。 相似文献
6.
馆藏期刊建设的发展方向—基于对“联合西文期刊篇名目次数据库”所收录期刊 总被引：3，自引：0，他引：3
以“联合西文期刊篇名目次数据库”所收录的期刊、所覆盖的参加馆馆藏期刊和9种二次文献所收录的期刊为研究对象,从期刊收录、期刊揭示及馆藏比对等方面,分析“联合西文期刊篇名目次数据库”的期刊资源状况,提出馆藏期刊建设发展的基本思路。 相似文献
7.
"面向信息机构的嵌入式NSTL资源集成服务系统"专辑序 总被引：2，自引：0，他引：2
李广建 《现代图书情报技术》2009,(6)
国家科技图书文献中心(NSTL)作为我国科技文献信息保障系统,通过几年的努力,已经引进了大量的信息资源,进行了海量目次信息的加工,极大地保障了国内对国外科技文献信息的获取率.国内许多科技文献信息服务机构(如高校图书馆等)以NSTL为参照系统,停订了NSTL已经购买的国外科技原版期刊,把NSTL的资源和服务能力作为自身的最终获取保障.在这种情况下,NSTL的资源服务面临着更高的要求. 相似文献
8.
试论建立大规模的全文数据库 总被引：6，自引：0，他引：6
周士虎 《现代图书情报技术》1996,12(3):20-23
分析了当前二次文献库和引文数据库建设中存在的问题及其内涵, 指出出版印刷本的二次文献库和引文数据库是一种重复劳动。列举了全文数据库的优点, 对建设大规模全文数据库的可行性、对计算机系统的要求、文献情报工作者的任务、建设和服务中可能产生的问题等作了分析。认为建设大规模全文数据库的时机已成熟, 应该着手其实施与实际的操作。 相似文献
9.
本文比较三种常用中文期刊全文数据库中图书情报类专业期刊收录情况:导航设置、收录数量、更新速度、核心期刊收录等等,以此来评价数据库的收录质量,了解图书情报学专业期刊的出版情况,为图书情报人员检索专业文献提供参考。 相似文献
10.
文章首先介绍了NSTL外文回溯期刊全文数据库系统的基本概况，随后着重介绍了其后台管理系统—NSTL回溯数据服务系统的用户管理机制，并分析了使用现状，同时提出意见和建议，最后展望了未来发展趋势。 相似文献
11.
Mohammadamin Erfanmanesh Muzammil Tahira A. Abrizah 《Publishing Research Quarterly》2017,33(4):421-432
Over the years, the number of journals indexed in Scopus has increased, although it varies significantly between countries. The increasing proportion of international journals of a country provides new venues for papers from that country to be seen by other researchers worldwide. In this work, we evaluate the relationship of a country’s scientific performance or publication success with both its journals’ quantity and quality. The specific objective of the study is to identify the relationship between the country’s publication success and the quantity and quality of those country’s journals indexed in Scopus during 2005–2014. The publication success of 102 individual countries, measured by their scientific productivity, impact and collaboration indicators, the quantity of country’s Scopus-indexed journals in 2014 (a total of 22,581 journals) as well as the quantity of its journals were investigated. Scopus-indexed journals are predominantly from Western Europe (48.9%) and North America (27.7%), with the United States and the United Kingdom dominate with a total 51%. The contribution from the peripheral countries is comparatively small, however there are a good number of contributions from the South-East Asian countries. Estonia is the fastest growing country in terms of having indexed journals in Scopus, following by Iran and Malaysia. Among the studied indices, it was found that publication success (total publications and total citations) of 102 countries are strongly correlated with quantity (number of indexed journals and number of documents published in indexed journals) and quality (citations per paper, SJR, h-index, CiteScore and SNIP) indicators of country’s journals. We can conclude that the scientific productivity of a country depend critically on the number of journals indexed from that country in citation databases. The study provides a context with which the relative success of publications can be assessed, yielding new insights into the scientific impact of individual countries and the performance of journals that they published. 相似文献
12.
A C Weller 《Bulletin of the Medical Library Association》1987,75(4):310-316
Many factors are weighed in judging the quality of a journal. Editorial policies in the instructions to authors section offer an important, though often neglected, source of information. In addition to directions on formatting and style, this section often includes financial disclosures and policies on coverage, peer review, confidentiality, human experimentation and duplicate submissions. This study analyzes the contents of instructions sections from several categories of medical journals to determine their usefulness in making collection development decisions. Included are journals currently considered the most prestigious, indexed in Index Medicus and Abridged Index Medicus, and not indexed in Index Medicus or subscribed to by a typical large academic health sciences library. It was found that in a statistically significant number of journals, the instructions to authors section is more likely to be included and substantive in highly regarded journals than in less prestigious journals. It is concluded that the amount of information in the instructions section is related to the quality of the journal and that these sections are a useful collection development tool. 相似文献
13.
14.
Steve Mcdonald Libby Taylor Clive Adams 《Health information and libraries journal》1999,16(3):151-156
Journal coverage is one factor that affects the retrieval of relevant information from bibliographic databases. The aims of this study were to investigate the coverage of databases for psychiatry journals, and to assess the overlap between databases. Psychiatry journals were identified using Ulrich’s International Periodicals Directory and then analysed to see which bibliographic databases indexed the most journals. A total of 213 abstracting and indexing services were listed as indexing at least one of the 977 psychiatry journals identified. The four most frequently cited databases (PsycLIT, EMBASE, BIOSIS and MEDLINE) indexed 506 (52%) of the psychiatry journals. Of these 506 journals, PsycLIT indexed 367 (73%), EMBASE 337 (67%), BIOSIS 243 (48%) and MEDLINE 236 (47%). Combining the databases with the highest yields (PsycLIT and EMBASE) increased the number of journals indexed to 461 (91%). The four databases combined accounted for 90% of all psychiatry journals found to be indexed by at least one abstracting and indexing service. More than 400 journals were not indexed at all. Variations in the overlap between PsycLIT, EMBASE, BIOSIS and MEDLINE, and the high proportion (35%) of journals indexed in only one of these four databases emphasize the importance of searching more than one or even two databases to ensure optimal coverage of the literature. 相似文献
15.
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
16.
Omwoyo Bosire Onyancha 《Publishing Research Quarterly》2017,33(1):71-91
The purpose of the study was to investigate and compare the social media (SM) impact of 273 South Africa Post-Secondary Education accredited journals, which are recognised by the Department of Higher Education and Training of South Africa for purposes of financial support. We used multiple sources to extract data for the study, namely, Altmetric.com, Google Scholar (GS), Scopus (through SCImago) and the Thomson Reuters (TR) Journal Citation Reports (JCR). Data was analysed to determine South African journals’ presence in and impact on SM as well as to contrast SM visibility and impact with the citation impact in GS, JCR and Scopus. The Spearman correlation test was performed to compare the impact of the journals on SM and other sources. The results reveal that 2923 articles published in 122 of the 273 South African (SA) journals have received at least one mention in SM; the most commonly used SM platforms were Twitter and Facebook; the journals indexed in the TR’s citation indexes and Scopus performed much better, in terms of their average altmetrics, than non-TR and non-Scopus indexed journals; and there were weak to moderate relationships among different types of altmetrics and citation-based measures, thereby implying different kinds of journal impacts on SM when compared to the scholarly impact reflected in citation databases. In conclusion, South African journals’ impact on SM, just as is the case with countries with similar economies, is minimal but has shown signs of growth. 相似文献
17.
Growing cooperation between Chinese journals and international publishers invites an investigation of the effect of this cooperation, based on an analysis of journal IF changes. Data from 23 Chinese academic journals were chosen from about 50 English-language academic journals indexed by SCI or SCIE and with a long history of cooperation. The data do not suggest that cooperation has improved the journals’ IF thus far. It appears that cooperation is generally limited to international distribution, and this has a weak influence on the quality of the journal and its IF, even though the papers can be accessed by worldwide users through publishers’ international distribution networks. Cooperation with international publishers is one step, but actively working on the quality of the journals is a more important step. 相似文献
18.
《资料收集管理》2013,38(1-2):41-57
Librarians must make selection decisions for their libraries based on the actual and perceived needs of their clientele. Scholars in any discipline will most likely become aware of new books in their field through the extensive reviews published in scholarly journals. Reviews in ten journals indexed by the MLA Bibliography were examined for content, timeliness, and evaluation of the reviewer, in order to determine if scholarly reviews in literature journals are useful collection development sources. The findings of the study suggest that collection development librarians at large academic libraries should use scholarly journals on a regular basis for collection development purposes, while librarians at smaller academic libraries should use them to supplement traditional trade reviewing sources, such as Choice. 相似文献