共查询到20条相似文献，搜索用时 718 毫秒
1.
[目的/意义] 鉴于Scopus、Web of Science(WoS)与Google Scholar(GS)3个单源数据库在计量学研究和应用中的局限,发展综合利用多源数据信息的复合型引文分析方法可为计量学分析提供一种补充思路。[方法/过程] 以期刊总被引次数这一底层参量为切入点,用图书情报学国际期刊2009-2014年数据为实证基础,尝试对多源数据复合引文算术均值、几何均值及调和均值方法进行比较讨论。[结果/结论] 结果发现,算术均值、几何均值和调和均值虽有差异,但亦有线性关联,应用中可选其一;累计算术均值、几何均值和调和均值与期刊数之间未证实存在布拉德福定律,但在期刊数量等同的三分区内,累计被引均值满足形如n2:n:1的经验分布;多源数据复合引文与单个数据库引文的期刊排名差异呈现"两端小、中间大"之现象;期刊的算术均值排名与GS排名结果更接近,几何均值排名则与Scopus相似度更高,而调和均值与WoS的排名差异最小。 相似文献
2.
引文扩散的动态过程更为全面地展现了科学论文的质量与影响。本文从引文扩散的视角出发,在传统引文指标基础上引入altmetrics,试图从论文学术影响力与社会影响力两个方面综合探究不同引文扩散模式下论文的影响力情况及各指标间的相关性。研究结果发现,规则型、持续型引文扩散模式下,altmetrics与引用呈正相关关系,同时具有高学术影响力和社会影响力;不规则引文扩散模式下,引用与社交媒体传播量不具有相关性,高社会影响力并不总代表着高学术影响力;文献发表早期,altmetrics对引用具有推动和促进作用。本文从扩散视角结合altmetrics对不同引文扩散模式论文影响力进行分析,为科学研究成果影响力评价构建多维度指标、提升学术影响力提供了借鉴参考。 相似文献
3.
[目的/意义] 构建多维指标的综合影响力评价模型,为不同层次挖掘高价值文献提供新途径。[方法/过程] 选取临床神经病学、化学与物理、地球科学作为自然科学的代表学科,信息科学与图书馆学、经济学、教育研究作为社会科学的代表学科,在Web of Science核心合集中收集引文指标数据,在Altmetric.com平台中收集Altmetrics计量指标数据,通过指标覆盖率和指标间相关性进行指标筛选,然后利用主成分分析方法建立不同学科的论文综合影响力指标模型并对比分析。[结果/结论] 不同学科的差异使论文影响力评价模型采用的指标有所区别,自然科学和社会科学论文影响力评价模型中共同保留的指标为被引频次、Mendeley、Blogs。在论文综合影响力评价中,学术影响力依然占据主导地位,社会影响力的测评研究发展迅速,两者结合的定量评价能挖掘出综合影响力较高的文献。 相似文献
4.
[目的/意义] 为探索图书的老化速度与引文特征,更客观地评价图书的学术价值和利用规律。[方法/过程] 对汤森路透WoS平台中图书引文索引（Book Citation Index）中2012-2014年间的图书情报学学科图书的引文数据进行引用半衰期、被引半衰期的计量,并与WoS中该学科的期刊引文半衰期、被引半衰期做分析比较。[结果/结论] 对比结果显示,该学科图书引用半衰期大于期刊引用半衰期,图书被引半衰期要小于期刊被引半衰期,并从图书的引文和被引规律分析造成这种差异的原因。 相似文献
5.
学术文献引文推荐研究进展 总被引：1，自引：0，他引：1
[目的/意义]学术文献引文推荐是指对于给定的学术文献,自动化地为其推荐合适的引文和参考文献。借助于引文推荐,用户可以在一定程度上提高撰写学术文献的效率,降低对重要相关文献的漏引。[方法/过程]分析国内外引文推荐研究的最新进展,阐述引文推荐问题的演化过程,从局部引文推荐和全局引文推荐等方面对引文推荐进行梳理,重点归纳文档相似性、主题模型、翻译模型、协同过滤和混合推荐等5种引文推荐常用方法,并总结引文推荐常用数据集和测评方法。[结果/结论]已有引文推荐研究的主要问题在于未考虑用户偏好的动态变化性及研究领域的综合性,在用户研究和实际应用方面仍有所欠缺;未来引文推荐的研究可运用语义化表达方法和自然语言生成技术,从基于上下文的引文推荐和跨语言引文推荐等方面进行展开。 相似文献
6.
[目的/意义] 为了解我国标准文献的学术影响力, 以为标准文献的利用提供参考, 从标准文献的角度出发, 分析其被引证特征。[方法/过程] 选择中国引文数据库中1994-2013年标准类引文数据, 采用文献计量的方法, 从标准引文总量、篇均标准引文量等方面分析标准文献的总体被引用情况和学科分布情况。[结果/结论] 标准引文量和篇均标准引文量占引文总量比例很小;各学科标准引文量差异较大, 工科和医科对标准文献的引用较多;标准引文数量和被引频次较高的专题集中于自然科学;大部分社会学科标准引用量为零;标准引文的半衰期整体上较长, 老化速度较慢。 相似文献
7.
引文起飞是文献被广泛采纳的重要信号,引文起飞的分布规律研究对解释引文动态进程具有重要意义,为文献科学评价提供新视角。本研究以中国社会科学引文索引（Chinese Social Sciences Citation Index,CSSCI）数据库1998—2018年的引文数据为研究对象,在对引文起飞识别基础上进行统计分析、对比分析及分布模型拟合,较为全面地揭示了引文起飞分布规律。本研究发现,我国人文社会科学文献大多仅存在一次起飞现象,主要分布在发表后的0～3年,且首次被引往往伴随着引文起飞;引文起飞论文数比例分布符合指数分布规律,拟合系数β可以判断文献引文起飞分布的集中离散情况;不同学科引文起飞分布存在差异,不同被引频次的引文起飞指数分布模型进一步解释了文献被引的内在机制。引文起飞学科分布差异可为知识分类提供参考,本研究的相关结论也可为建立新的科学评价指标提供思路。 相似文献
8.
[目的/意义]大数据环境下,科学数据管理研究具有重要的理论和现实意义。对科学数据管理研究脉络进行可视化分析,可以为我国该主题研究提供参考与借鉴。[方法/过程]基于WoS和Google Scholar,利用Citespace、Ucinet、TDA等分析工具,探析国际学术界科学数据管理研究发展的演进过程,全面揭示科学数据管理研究的历史、现状和发展方向。[结果/结论]从时间分布图谱、空间分布图谱、主题演进图谱和知识基础图谱4个维度反映科学数据管理的研究现状,并结合国内相关研究及发展状况提出相关建议。 相似文献
9.
10.
伴随数据论文影响力的凸显,数据计量逐渐兴起。本文基于数据计量,融合多维度、多指标综合评价数据论文的影响力。首先,本文通过信息传播模式分析数据论文影响力的产生机制,解析出数据论文影响力可以划分为潜在影响力、学术影响力和社会影响力三个维度。其次,融合Altmetrics与引文分析甄选指标构建数据论文影响力评价体系。最后,利用相关性分析以及三维空间差异性分析解构数据论文影响力评价结果。研究结果表明,三维度影响力反映出数据论文综合影响力,三者相互补充与促进。同时,数据论文应在整体上促进评审机制、引用机制和激励机制的针对性发展,在内部促进数据论文质量、内容、逻辑和时效的优化。 相似文献
11.
Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献
12.
《Slavic & East European Information Resources》2013,14(2-3):69-88
SUMMARY This article discusses Jewish book publishing in most of the Soviet Union's successor states after 1990. All publications on Jewish history, culture, traditions, and religion (Judaism) are included under this rubric. In addition to scholarly and educational publications, fiction translated from Yiddish and Hebrew, and “Russian-Jewish literature” are also included. The author provides statistics and discusses basic themes, linguistic issues, and problems encountered in the post-Soviet states. The article lists different publishers and organizations involved in Jewish book publishing. 相似文献
13.
《Journal of Web Librarianship》2013,7(3):169-181
This article describes a study of the two most popular plagiarism-detection software platforms available on today's market—Turnitin (http://www.turnitin.com/static/index.html) and SafeAssign (http://www.safeassign.com/). After a brief discussion of plagiarism's relevance to librarians, the authors examine plagiarism-detection methodology and conduct a review of the current literature regarding plagiarism-detection efficacy. To evaluate detection efficacy for Turnitin and SafeAssign, the authors constructed a brief study in which twenty sample papers containing portions of plagiarized material were submitted to each platform. The results show that Turnitin had the highest overall success at plagiarism detection with an 82.4 percent detection rate. Additionally, both platforms had a combined false-positive detection rate of 16.8 percent. The authors conclude that close review of material suspected of plagiarism is still essential for proper identification. 相似文献
14.
翟中文 《图书馆工作与研究》2011,(9):71-74
本文选择了国内外几个典型的引文数据库,如:美国《艺术与人文科学引文索引》、《社会科学引文索引》、中国的《中文社会科学引文索引》、《中国科技论文引文分析数据库》、中国科学引文数据库等,并对其收录范围、来源文献的学科分布、更新频率等方面进行了比较研究,对今后我国引文数据库的建设提出了一些建议。 相似文献
15.
《Slavic & East European Information Resources》2013,14(1-2):149-154
ABSTRACT The article describes the development and use of the database BAZTECH: Polish Technical Journal Contents. The database indexes Polish-language scientific and technical journals, and is available free-of-charge on the Internet. 相似文献
16.
《Slavic & East European Information Resources》2013,14(3-4):111-125
Abstract The Russian government is exerting increasing control over the country's media, although the media are resisting. This government-media conflict is relevant to Western academics and libraries, because the variety and quality of Russian periodicals is at stake. In addition, if the media are constrained, publishers of books are likely to experience restrictions, too. The difficulties the government is having in controlling the media, however, are a measure of how much Russia has changed. At the same time this conflict is occurring, book publishing is thriving. Official statistics show the number of titles published surpassed even the previous record set in 1977. Planning is in progress to restructure the state book industry sector, including publishing, printing and distribution. Book prices have increased more rapidly than inflation, and postage costs have also increased. Russian Press Service is doing its best to keep its prices to Western libraries down. 相似文献
17.
SUMMARY Describing her experience of establishing an Electronic Document Delivery Service at the library of the Lahore University of Management Sciences (LUMS), the author discusses the various issues, which significantly effect the net cost, delivery time and management process of providing such a service by a library in Pakistan. While presenting multiple options leading to an effective solution, the advantages and disadvantages of each option have been highlighted, and their implications, with particular reference to Pakistani libraries, have been discussed. The various points to be considered by Pakistani Librarians, while selecting a commercial Document Provider, have also been discussed. In the end, the author discusses the potential of using the Electronic Document Delivery facility as a time-saving and cost-effective tool for Resource Sharing among libraries in Pakistan. 相似文献
18.
ABSTRACT No one can predict what document delivery will look like in the future, but librarians must guard patron confidentiality even in an electronic environment. This time it isn't an easily solved problem like finding another way of recording circulation than handwriting patron names onto circulation cards, it is instead the tracking of personal information attached to electronic text supplied by publishers that is a potential violator of patron privacy. Unmonitored in their efforts to protect their intellectual property without considering the rights of their customers, publishers could pose a threat to their customers' privacy, thus limiting their legal right of free access to information. Although encryption technology would appear to provide an answer to the confidentiality problem, it is not a panacea and that must be considered as the National Information Infrastructure is developed. Librarians need to stay alert to the developments in electronic publishing to be sure their concerns for patron privacy continue to be heard. 相似文献
19.
Josie Barnes Parker 《图书馆管理杂志》2013,53(6):731-737
ABSTRACTIn today's current political environment raising support for millage renewals, bond campaigns or even millage continuations for public libraries is affected by national politics, and a tendency towards tax aversion on principle across the country. The lessons we can learn from the governing boards of small and rural public libraries are worth raising up to a greater national consciousness. Board governance, community consciousness, and facilities management are clear and logical tools that elected boards of public libraries can use to politick for support of libraries. 相似文献
20.
This article uses the metaphor of building to frame discussion about how we prepare for the provision of learning in the years
to come. The intention is to catalyze key conversations that will shape how, where, and why we learn. The principal focus
is on areas such as blended learning, mobility, gaming, social networking, holographics, analytics, and the human touch. However,
the larger theme involves challenging the reader to vision how we bring the best of traditional education forward, combine
it with new technologies and techniques, to reach and teach students well. 相似文献