共查询到18条相似文献，搜索用时 234 毫秒
1.
[目的/意义]继承p指数的思想,提出基于引证文献的单篇论文评价指标pq指数、基于参考文献和引证文献的综合性单篇论文评价指标pc指数,以综合评价单篇论文的学术质量。[方法/过程]选择图书情报学2013年的载文做样本数据,对pq指数、pc指数进行验证。[结果/结论]发现在测度单篇论文学术质量时,pq指数不仅继承了h指数、学术迹基于引证文献评价单篇论文的优势,而且分别在数值区分度、计算过程复杂度方面优于h指数和学术迹。pc指数将单篇论文的引证文献、参考文献综合在一个评价体系中,不仅具有pq指数、h指数、学术迹的性能,而且为单篇论文评价方法提供了一个全新的视角,具有全面反映学术论文内容质量和学术影响力的综合优势。 相似文献
2.
为克服h指数评价个人科研能力时有可能出现多人具有同一h指数,从而无法进行细分这一缺陷,对h指数进行一次修正,设计出一种功能更强大、使用范围更广泛的hi指数,介绍hi指数的定义、原理和方法,并使用hi指数对我国图书馆学、情报学领域部分作者进行评价以证实其效用。最后总结hi指数与其他几种形式相似的类h指数方法之异同,界定各自的适用范围,并指出hi指数的最大优点就是在整个评价过程中都贯彻发文量与被引量相结合的思想。 相似文献
3.
h指数自2005年被Jorge E. Hirsch提出后,因其具有计算简单和适用范围广等特点而引发了学术界的广泛关注。许多研究者在h指数的基础上,对h指数进行修正,并提出了多种衍生指数。为深入了解这些同源性衍生指数间的关系,评估它们在不同层次人才评价中的应用效果,选择15种主要类h指数,以2008-2011年SCIE收录的农业科学领域114 643篇论文为研究对象,采用探索性因子分析方法对15种指数进行相关性分析,结果表明在大数据情况下A指数和m指数与作者论文质量密切相关;g指数、hw指数和R指数能更好地评价高产高被引作者;hw指数和χ指数在评价高产低被引作者时效果较好;π指数、χ指数、m指数、A指数、hw指数、e指数对低产高被引作者评价效果较好。 相似文献
4.
5.
随着网络的高速普及,博客迅速成为信息交流的重要载体和途径。从博客h指数出发,探讨博客阅读次数h指数与评论次数h指数的相关性,博客阅读次数h指数及评论次数h指数与博主学术论文h指数之间的相关性。结果表明,博客可采用博客h指数结合博客点击数的方法进行博客的排名;可运用博客h指数结合科学家h指数用于科学家个人学术成就的评价。 相似文献
6.
为弥补z指数无法区分合著作者贡献率的缺陷,提出3种基于署名顺序分配合著作者贡献权值的改进z指数,以提高利用z指数评价学者学术影响力的有效性和全面性。将几种基于署名的合著作者贡献测度算法引入z指数,以muscular dystrophy领域具有代表性的学者作为研究对象,从描述性统计结果分析、学者排名情况、相关性、典型情况分析等维度比较分析zhc指数、zgc指数及zac指数评价效力。结果表明:zhc指数、zgc指数及zac指数均能体现合著作者贡献大小,但是zgc指数对总作者数少于10位且排名靠前的作者贡献更加偏重,zac指数对总作者数相对较多且署名顺序相对靠后的作者贡献相较友好,而zhc指数对被引量不同的论文的作者位次变化较为敏感,且这3个指数均能在不同程度抑制“挂名”及“互挂”现象的滋生。 相似文献
7.
8.
对2012~2014年入选F5000的农业科学类论文的引文总数、中文引文数、外文引文数、近5年引文数、引文类别和发表年份进行核查,对其篇均引文数及普赖斯指数等引文计量指标进行统计分析.结果表明:829篇农业科学论文的引文率为99.88﹪,篇均引文、中文引文、外文引文和近5年引文数分别为27.70、15.68、12.02和11.40条/篇;11~30条引文的论文共有556篇,占论文总数的67.07﹪;11~30条引文的论文中更易出现高被引论文.各年F5000农业科学论文的篇均引文数、中文引文数、外文引文数及近5年引文数均呈波动性上升趋势,但普赖斯指数呈下降趋势,引文半衰期呈增大趋势. 相似文献
9.
期刊h型指数与论文数量和被引的关系实证 总被引：3，自引：0，他引：3
10.
[目的/意义]针对P指数不能反映评价对象引文分布的P缺陷,在P指数研究的基础上,提出基于引文分布的指数计算方法。[方法/过程]引入发文-引文分布曲线和学术矩阵表征期刊的引文分布,利用期刊评价的非参数统计方法,通过将引文数据进行分区划分,基于P核和P尾内有引用的论文,采用期刊的平均引文率代表零引用论文的影响,重新定义P指数的计算方法,提出Pnew指数。为避免学科差异对期刊评价的影响,以仅属于Web of Science数据库中电子电气工程类目下有5年影响因子的53种期刊为研究对象,分别统计期刊的影响因子、5年影响因子、H指数、P指数、Pnew指数等指标,并进行相关性及差异性分析,以验证Pnew指数评价的科学性和有效性。[结果/结论]结果表明,Pnew指数与H指数、P指数等多个关键指标的相关性较好。与P指数相比,Pnew指数既延续了其高灵敏度与高区分度的特点,又对P指数相差无几但引用分布大不相同的期刊有更好的显示度和辨识度,而且能够矫正引文分布对P指数评价的偏差。 相似文献
11.
我国图情博客发展状况调查研究 总被引：1，自引：0，他引：1
利用专业文献和网络对国内图情博客进行收集和整理,获得可访问的博客链接891个,分别从博客创建年代、网站分布、博客生命力和活跃度等方面对其发展状况进行分析。研究表明图情博客主要集中在Sina、Chinalibs、Bokee三大网站,发表文章较活跃,但生命力一般,约有38%的图情博客进入“半休眠”或“完全休眠”状态。图情博客积累大量的图情专业知识,建议开发博客共享管理平台对其进行有效的管理和利用。 相似文献
12.
Daniel Torres-Salinas lvaro Cabezas-Clavijo Rafael Ruiz-Prez Emilio Delgado Lpez-Czar 《Library & information science research》2011,33(2):168-174
A metric analysis of blogs on library and information science (LIS) between November 2006 and June 2009 indexed on the Libworm search engine characterizes the community's behavior quantitatively. An analysis of 1108 personal and corporate blogs with a total of 275,103 posts is used to calculate survival rate, production (number of posts published), and visibility via such indicators as links received, Technorati authority, and Google's PagePank. Over the study period, there was a 52% decrease in the number of active blogs. Despite the drop in production over this period, the average number of posts per blog remained constant (14 per month). The most representative blogs in the discipline are identified. The emergence of such platforms as Facebook and Twitter seems to have meant that both personal and corporate blogs have lost some of their prominence. 相似文献
13.
This study examined whether the candidate-controlled public relations tools of political ads and candidate blogs were successful in influencing the issue and news agenda of the major television news networks during the 2004 presidential election. Data showed strong correlations between blogs and the media agenda. Advertisements did not correlate with the media agenda. Cross-lag analyses showed that the media set the candidates' agenda. The authors suggest intermedia agenda setting occurred as the media transferred their agenda to campaign blogs. 相似文献
14.
Jennifer L. Boxen MSLS 《The Reference Librarian》2013,54(1):21-34
In recent years the professional literature has seen an increase in articles written about Library 2.0 implementation in academic reference departments. These articles have focused on the integration and introduction of services such as blogs, wikis, social networking Websites, RSS, and podcasting. This article reviews the content of this literature to see which articles demonstrate a qualitative or quantitative benefit to the libraries where they are used. 相似文献
15.
引文评价新指标SNIP旨在评价不同主题领域期刊影响力。从理论上对比分析SNIP与IF、h指数、SJR指标值的原理、关系,各自的优缺点以及它们的应用区别。结果表明,理论上SNIP与其他3个指标存在关联性,具有一定的优势,可用于期刊评价实践中。 相似文献
16.
《Journal of Informetrics》2014,8(4):917-934
This paper exploits a unique 2003–2011 large dataset, indexed by Thomson Reuters, consisting of 17.2 million disambiguated authors classified into 30 broad scientific fields, as well as the 48.2 million articles resulting from a multiplying strategy in which any article co-authored by two or more persons is wholly assigned as many times as necessary to each of them. The dataset is characterized by a large proportion of authors who have their oeuvre in several fields. We measure individual productivity in two ways that are uncorrelated: as the number of articles per person and as the mean citation per article per person in the 2003–2011 period. We analyze the shape of the two types of individual productivity distributions in each field using size- and scale-independent indicators. To assess the skewness of productivity distributions we use a robust index of skewness, as well as the Characteristic Scores and Scales approach. For productivity inequality, we use the coefficient of variation. In each field, we study two samples: the entire population, and what we call “successful authors”, namely, the subset of scientists whose productivity is above their field average. The main result is that, in spite of wide differences in production and citation practices across fields, the shape of field productivity distributions is very similar across fields. The parallelism of the results for the population as a whole and for the subset of successful authors, when productivity is measured as mean citation per article per person, reveals the fractal nature of the skewness of scientific productivity in this case. These results are essentially maintained when any article co-authored by two or more persons is fractionally assigned to each of them. 相似文献
17.
为了探讨开放存取模式下论文的质量和影响力,本文随机抽取2004年生物学领域影响因子相近的完全OA期刊与非OA期刊各5种,排除评论性和综述性的文章,从论文的影响力、论文间质量的差异性、作者合作度3个方面,采用平均被引频次、被引频次的极差、平均作者数、论文合著率4个指标进行了统计分析,进而研究开放存取模式下论文的学术水平和影响力。本文的研究结果显示,OA论文已经达到甚至超过非OA论文的质量和影响力。 相似文献
18.
This article discusses librarian support of medical education programs and patient care with blogs and wikis. Pedagogical background for using Web 2.0 tools in educational settings is explored and example applications given. A survey of health sciences libraries usage of blogs and wikis was conducted in 2009–2010. Using the results from the survey plus five years of experience using blogs and wikis at the University of Washington Health Sciences Library, best practices were compiled and are presented for guidance in establishing new blogs and wikis. 相似文献