共查询到20条相似文献，搜索用时 249 毫秒
1.
【目的】 探讨不同类型文献对期刊影响因子的作用,为科学评价学术期刊质量和影响力提供参考。【方法】 以3种代表性的国际顶级期刊Physical Review Letters,Chemical Reviews和Energy & Environmental Science为例,通过查询Web of Science数据库的相关数据,分别计算和分析了综述性文献和研究性文献对期刊影响因子的总体贡献度与平均贡献度。【结果】 总体贡献度与平均贡献度可以分别从总体上及平均上来评价不同类型文献对影响因子的作用。【结论】 这两种贡献度评价方法的有机结合可有效地评估不同类型文献对影响因子的影响,有利于建立更为公正和合理的期刊评价体系。 相似文献
2.
【目的】 以广东省医药卫生期刊为统计源,建立科技期刊学术影响力综合评价指标体系,为我国科技期刊的综合评价提供参考。【方法】 选取《2017年中国科技期刊引证报告(扩刊版)》中10个文献计量指标,运用因子分析法对广东省医药卫生期刊影响力水平进行综合评价,构建期刊的综合评价函数。选择广东省医药卫生高校学报、外科学期刊验证综合指标,计算期刊的综合评分并且排序,将排序结果与影响因子的排序结果进行对比分析。【结果】 广东省医药卫生期刊影响力主要来源于3个公因子,即影响力总量因子、影响力强度因子和影响力时效性因子,分别在总被引频次、影响因子、被引半衰期上有最大的因子载荷。在权衡这3个因素的基础上,构建期刊影响力综合评价函数。实例验证显示该综合指标体系能够较好地避免影响因子在时间、被引频次等方面的局限性。【结论】 期刊评价需要综合影响力总量、强度和时效性3个因素,既要体现期刊长期和近期的影响力,还要体现其发展变化趋势。期刊发展应当以数量、质量、时效性并重,将期刊办精办好、办强办大,注重传播效能以便学界快速获取和利用。 相似文献
3.
【目的】 探讨期刊引证指数(Journal Citation Indicator,JCI)的文献计量学特征及评价应用。【方法】 系统梳理JCI设计理念及相关理论,从InCites-JCR采集相关数据,对JCI进行实证研究。【结果】 与影响因子相比,JCI对引证时间窗口、文献类型、被引频次计数方法等设计更加合理,并且对被引频次按照学科、出版年和文献类型进行了标准化处理,能够更加合理地用于学术期刊影响力评价,尤其是期刊的跨学科评价。【结论】 JCI应用于学术期刊影响力评价具有明显的优越性,其设计体现了跨学科评价理念,能够较为客观地反映我国科技期刊的发展情况。 相似文献
4.
【目的】 对CiteScore和《期刊引证报告》(JCR)期刊评价体系收录期刊的异同进行比较,并分析CiteScore对期刊评价研究与实践的潜在影响。【方法】 对CiteScore 2016版及JCR 2015版收录的期刊进行统计分析,比较两者在期刊收录范围、相互覆盖程度、期刊影响因子计算方法、影响力排名分区的差异,分析中国科技期刊在2个评价体系中的表现。【结果】 CiteScore和JCR所采用的评价期刊影响因子的计算方法类似,对期刊影响力的评价结果总体存在较高的一致性。【结论】 CiteScore和JCR将并存一段时间,并推动完善国际期刊评价方法的研究热潮。 相似文献
5.
【目的/意义】对中文学术论文中的外文文献引用特征的充分挖掘和系统分析是了解国内学者的外文文献
资源使用规律,从而促进外文资源合理利用的有效手段,也是完善论文质量评价体系和制订文献保障战略的重要
研究课题之一。【方法/过程】从论文审稿人和指标评价角度,对外文文献利用的主观意愿、期刊质量相关性、研究主
题特征等要素进行了深入分析。【结果/结论】实证研究结果显示,期刊审稿人对外文文献的价值一致持肯定态度,
期刊外文引文率和影响因子之间存在显著的正相关关系。不同的研究主题因国际化程度不同,外文引文率有较大
差异。【创新/局限】通过定量方法发现和解释了中文学术论文中外文参考文献的引用模式。 相似文献
6.
【目的】基于不同文献类型,对信息科学与图书馆学期刊的5年影响因子（5IF）进行矫正,以期明确基于文献类型矫正影响因子在信息科学与图书馆学期刊中的应用价值。 【方法】 以SSCI信息科学与图书馆学30种期刊为研究对象,在分析文献类型的基础上,提出5种矫正5IF,传统5IF也由计算获得;将各刊的传统5IF、矫正5IF与总被引频次、2年影响因子、特征因子、SJR值、SNIP值做Spearman相关性分析。【结果】 各矫正5IF与传统5IF在期刊评价中有较强的一致性,各矫正5IF之间也有强相关性;传统5IF和各矫正5IF与期刊其他各评价指标间均呈显著正相关,且相关系数差异很小。【结论】基于文献类型矫正影响因子的方法不建议应用于信息科学与图书馆学期刊。 相似文献
7.
【目的】探讨我国现行的主要是以影响因子为核心的情报学期刊评估方法的科学合理性。【方法】引入评估学的理论方法,分析我国现行以影响因子为主要指标的评估方法在理论和实施目标上的问题。【结果】采用影响因子为核心的评估方式并不能说明其评价的科学性。【结论】科学的期刊评价体系应吸收评估学的理论,建立起综合的体系。 相似文献
8.
盛丽娜 《中国科技期刊研究》2018,29(6):605-611
【目的】 分析CiteScore、CiteScore百分位与常用期刊评价指标的相关性,评价其文献计量学特征,为指标的进一步应用提供参考。【方法】 以2016年数据为基础,在Scopus和Web of Science数据库共同拥有的学科中,考虑学科规模以及影响力的差异,选择4个学科的期刊为研究对象,分别在学科内分析CiteScore、CiteScore百分位与期刊常用文献计量学指标(SNIP、SJR、影响因子、特征因子、论文影响分值、影响因子百分位、标准特征因子、即年指标等)的相关性,在学科间分析CiteScore百分位与SNIP、影响因子百分位、标准特征因子的相关性。【结果】 在学科内,CiteScore、CiteScore百分位与上述指标均呈现显著正相关(P均小于0.05);在学科间,CiteScore百分位与影响因子百分位、SNIP、标准特征因子均呈现显著正相关(P均小于0.001)。【结论】 CiteScore可以和影响因子等文献计量学指标一样用于学术期刊的评价,CiteScore百分位也适用于期刊的跨学科评价。 相似文献
9.
【目的/意义】鉴于参考文献在期刊论文发表过程中的重要性以及引证文献对期刊论文的影响力,提出基于 时间序列数据聚类的期刊参考文献与引证文献来源分析研究。【方法/过程】以图书情报类某重要核心期刊 2010-2017年期间刊发的3500篇论文作为样本数据,利用正则表达式对非结构化的样本数据进行结构化处理,将参 考文献来源期刊和引证文献来源期刊的均篇引用均值转化为时间序列数据,结合时间序列数据聚类方法分别从数 值和趋势两个方面展开研究,探究发现期刊参考文献与引证文献两种来源期刊各自之间隐含的相关关系。【结果/ 结论】研究发现：新方法可以从时间变化的角度对来源期刊实现聚类划分,自适应地找到中心来源期刊作为簇的特 征对象,其获得的结论可为目标期刊编辑部,论文读者与创作者对期刊文献的质量管理提供决策参考和理论依据。 相似文献
10.
伍军红肖宏孙隽郑新宇 《中国科技期刊研究》2022,(7):957-964
【目的】从单篇论文引证体现的期刊学科贡献性、重要性、长效性以及学术传承性4个维度,对期刊论文的相关指标进行统计,析出重要的实质性引用并将其标准化,从而压缩被引频次的水分,实现更加有效和精准的期刊影响力评价。【方法】立足“以文评刊”的理念,从单篇论文引证视角,采用论文引证标准化指数、论文复引频次、文献L指数及F1指数4个维度的6个指标,探索改进学术期刊评价的新方法。【结果】以自然地理学中文期刊为例开展实证研究,6个评价指标能更加准确地表征期刊的重要性和长效性。【结论】相比基于影响因子等传统评价指标的方法,基于单篇论文引证视角的期刊评价改进方法可更加合理地对期刊进行定量评价,有效促进期刊关注论文的学术质量及长期作用,是一种值得推广的期刊评价新思路。 相似文献
11.
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
12.
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
13.
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
14.
《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
15.
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
16.
《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
17.
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
18.
Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
19.
Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
20.
Leah A. Lievrouw 《The Information Society》1998,14(2):83-96
The main premise of this article is that in information societies generally, and in virtual social contexts particularly, a distinctive style of interaction to facilitate the communication of difference, heterotopic communication , has emerged. It rests on two cultural foundations: an ideological belief in the positive, socially integrating power of communication, and a prevailing ethic of instrumental rationality, subjective individualism, and strategically practiced self-interest. The former is demonstrated by the use of simulation and spectacle as sources of information; exhibitionism/voyeurism as a communicative style; and the awareness of surveillance. The latter is seen in the competitive use of knowledge as a commodity; a surface globalism masking deep parochialism; lateral as well as vertical information inequity; and the use of public versus private as strategies for engagement rather than as spaces. Those who engage in heterotopic communication resort to their 'own devices' both in the sense of personal agendas, strategies, interests, and interpretations, and in the form of the telecommunication tools that help realize them. These personal and technological devices allow individuals with the right educational and technical resources to avoid exposure to disagreement, difference, or other information that does not serve their direct purposes or reflect their particular views of the world; yet they also help convey the appearance of openness, availability, and cooperation. This style of interaction is used strategically in combination with information and communication technologies to gain social or economic advantages, but it may encourage social separatism and parochialism, inhibit the negotiation of disputes, and emphasize competing interests. 相似文献