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1.
以2013年1月21日为统计目,对国内图书情报学领域排名前40位论文高被引博士生导师在CNKI收录期刊上发表论文的被引频次为依据,计算出每位导师的h指数。通过h指数与总被引频次、发文量、篇均被引量的对比．分析h指数用于评价学术成就的优缺点。 相似文献
2.
【目的/意义】作者学术影响力评价指标不断推陈出新,但尚缺乏在论文被引离散度层面对作者影响力的评价,本文提出一种综合论文被引频次平均性和均衡性的作者影响力评价指标--Gm指数。【方法/过程】以2009年-2018年图书情报领域发文量最高的20名学者文献数据为样本,采用熵权法确定作者论文被引频次平均性和均衡性的客观权重,计算作者的Gm指数,与h指数、g指数、篇均被引频次进行对比,并从稳定性、区分性和相关性角度讨论Gm指数的评价效果。【结果/结论】结果表明:Gm指数与h指数、g指数、篇均被引频次呈显著相关,与h指数、g指数相比,Gm指数的数据稳定性良好、对作者区分度较高。 相似文献
3.
【目的】探讨情报学领域期刊发文时滞与论文影响力之间的相关性,以及分析发文时滞较短的论文的作者、机构以及研究主题等特征。【方法】 利用Spearman统计检验和关键词统计分析方法,分别对Scientometrics和《情报学报》期刊论文的发文时滞和被引频次的相关性、发文时滞较短论文的作者的h指数、机构排名以及关键词特征等进行分析。【结果】该两种期刊论文的发文时滞与论文被引频次之间具有相关性趋势,相关性并不显著。选题为当前领域研究热点的科研成果能够获得快速承认和发表,作者和作者所在机构的名望对于缩短论文的发文时滞具有促进作用。【结论】研究结果可以为研究人员投稿以及期刊编辑部审稿和出版提供案例参考。 相似文献
4.
从发文量、核心期刊发文量、H指数、被引频次、下载频次、高频被引量、科研基金项目等几个指标对陕西省33所公办本科院校的学术影响力进行综合评价,从而揭示其学术研究现状。 相似文献
5.
医学类期刊h指数与影响因子、总被引频次的相关性研究 总被引：4，自引：0，他引：4
通过对h指数与影响因子、总被引频次作相关性分析,探讨h指数与影响因子以及总被引频次的关系。发现h指数与影响因子、总被引频次之间既有较好的相关性,也有其独有的特点。三者可以相互补充,在今后医学类期刊学术影响力的评价中发挥一定的辅助作用。 相似文献
6.
作者机构分布情况在科技期刊评价中的应用 总被引：2，自引：1，他引：1
盛丽娜 《中国科技期刊研究》2012,23(4):585-588
现行的科技期刊评价指标如影响因子、总被引频次等均属被引指标,因而可通过提高自引人为操纵,致使其作为期刊评价指标的公正性受到质疑。为寻求更为客观的期刊评价方法,本文探讨了应用作者机构分布情况评价科技期刊学术影响力的可行性。根据国内4种眼科学核心期刊论文的机构分布情况,以发文量、论文被引量和下载量为评价指标,确定各机构学术影响力分值,并以此对各机构进行排序（总体机构排序）。然后对我国2010年11种眼科学期刊各机构发文量进行统计,并与确定的各机构学术影响力排序做等级相关检验,根据各期刊作者机构排序与总体机构排序的相关度最终确定各期刊影响力排序。将此期刊排序、影响因子排序和总被引频次排序分别与问卷调查的该11种眼科学期刊排序进行相关检验,结果表明,用作者机构分布情况评价科技期刊影响力优于影响因子及总被引频次,具有较强的科学性和合理性。 相似文献
7.
【目的】 研究z指数在期刊评价中的效果。【方法】 以SSCI收录的信息科学和图书馆学期刊为例,计算分析了目标数据的总发文数量、总被引频次、篇均被引频次、一致性指标η、h 指数、p指数和z指数,实证研究了z指数应用于期刊影响力的评价效果。【结果】 z指数相较于h指数以及p指数更加适合于综合评估期刊学术影响力的质量因素、数量因素和被引分布情况。【结论】 利用z指数评价期刊有助于激励期刊发表高水平论文,z指数具有较好的灵敏性和区分度。但z指数在期刊学术影响力评价中存在不能区分施引文献影响力大小等缺陷。 相似文献
8.
【目的/意义】作者影响力是学术资源分配、学术人才引进、学术奖励分发的重要指标。为丰富作者影响力
的评价体系,本文提出评价作者影响力的新指标——Iw（Weighted Influence）指数。【方法/过程】在前人研究的基础
上,修正加权被引频次,综合论文数量、署名顺序、发文时间等参数构建 Iw指数。为检验 Iw指数的评估效果,选取
CNKI数据库“图书情报与数字图书馆”研究领域下发文量排名前 40位的作者,计算其 Iw指数,并与 h指数、hc指数
进行对比。【结果/结论】相比 h指数、hc指数,Iw指数对论文数量、署名顺序、加权最高被引频次等敏感度更高,对作
者影响力排名的区分效果更显著,评价结果更全面精细。 相似文献
9.
机构h2指数能够定量的计算出机构所拥有的高水平科研人员规模,以一个全新的角度对机构学术影响力进行评价,具有简单、直观、可视等优点,但同时也存在着一些问题。[方法/过程]本文结合数据分析和实证研究,对机构h2指数存在的问题进行深入的理论分析。首先,同机构科研人员合作署名会在很大程度上提高机构h2数值;其次,不同机构所拥有的高水平科研人员数量有可能相同,但被引次数和高被引文章数量可能存在较大差距;另外,机构h2指数将拥有单篇高被引但发文少或个人h指数不高的作者排除在外,忽略了单篇高被引论文和作者对机构学术影响力的贡献。[结果/结论]本文针对上述问题提出相应的对策,对h2指数进行修正,并进一步以机构h2n指数为基础,利用因子分析方法,得出一种机构学术影响力的综合评价指数。 相似文献
10.
医学期刊h指数与影响因子、总被引频次的相关性分析 总被引：1，自引：1，他引：0
评价h指数与影响因子、总被引频次之间的相互关系。以 2009年版《中国期刊引证报告》（扩刊版）中的内科学、外科学、肿瘤学、妇产科和儿科学的166种期刊ｈ指数、影响因子、总被引频次、引用刊数和来源文献量为源数据,采用SPSS160软件Spearman等级相关分析各指标间的相关性。 h指数与影响因子、总被引频次、引用刊数和来源文献量间Spearman等级相关系数分别为0851、0919、0822和0455,P值均<0001。 期刊h指数与影响因子、总被引频次的相关性较强,ｈ指数、影响因子、总被引频次应相互补充共同应用于医学类期刊学术影响力的评价中。 相似文献
11.
A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
12.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
13.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
14.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
15.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
16.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
17.
Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
18.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
19.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
20.
Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献