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【目的】 探究参考文献各指标与论文被引频次之间的关系,为撰写高被引论文、科学评价计量学指标等提供参考。【方法】 以2013年Web of Science中凝聚态物理学科下的12种期刊共计8847篇论文为样本数据,利用负二项回归模型测度了参考文献的4类指标与论文被引频次之间的关系。【结果】 在控制期刊影响因子的前提下,12种期刊的代表时间维度的普赖斯指数都与论文被引频次之间存在显著的正相关关系;在大多数期刊中,参考文献的数量和表征跨学科性的香农指数也对论文的被引频次有显著正影响;而表征论文质量的篇均参考文献被引频次中值与论文被引频次之间的相关关系不明确。【结论】 参考文献的一些指标可能影响论文的被引频次,结合实证结果,对科研工作者合理利用参考文献产出高质量论文提出相应建议。 相似文献
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【目的】 了解综合性农业科学类中文核心期刊零被引论文特征,探讨该类期刊在提高影响力方面的措施。【方法】 收集《中文核心期刊要目总览》中13种综合性农业科学类期刊在2011年发表的零被引论文,对其作者数量、第一作者所属机构、第一作者职称、第一作者学历、基金资助情况以及论文下载频次、篇幅、类型及学科分布等进行统计分析。【结果】 各刊零被引论文数量与其发文量相关性不大,零被引率与期刊的影响因子呈负相关。高等院校的零被引论文占比最大;零被引论文随完成论文合作机构数量的减少而增加。基金资助论文的零被引率高于非基金资助论文;资助项目少的论文零被引率低于资助项目多的论文。篇幅短的文章或不系统的研究性论文较少被引用。摘要信息量存在一定程度的不完善。综述型论文零被引率小于研究型论文。【结论】 各刊发文量与零被引论文量间的关系视具体情况而定。针对零被引论文占比较大的稿件,即高等院校及任务类稿件,应在论文发表前的各环节进行协同控制。要加强及重视摘要信息的规范编辑。对来稿字数应作要求。编辑要及时掌握研究领域动向,加强与资深专家及学科带头人间的沟通,积极约稿。尽早发表并提高论文的显示度,进而减少零被引或低被引文献的产量。 相似文献
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【目的】 分析肿瘤学meta分析论文的现状,并探讨期刊类型与肿瘤学meta分析论文被引用情况的相关性,为学者选择期刊宣传科研成果提供参考。【方法】 选取2011—2016年SCI收录的肿瘤学meta分析论文作为研究对象,提取论文的引用频次、发表国别、期刊影响因子、期刊类型等信息。【结果】 目前我国发表的肿瘤学meta分析论文数量虽位居全球第一,但篇均被引频次最低。2011—2016年,开放性meta分析论文的数量呈上升趋势。肿瘤学meta分析论文的被引频次与期刊类型具有低相关性。肿瘤学meta分析的非开放性期刊论文的篇均被引频次高于开放获取期刊论文,高被引论文的来源期刊平均影响因子比低被引论文高。【结论】 肿瘤学meta分析的开放获取期刊不存在引用优势,论文质量仍然是meta分析论文被引频次的主要因素。 相似文献
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【目的】研究医学学报类期刊零被引论文的特点,提高稿件处理效率。【方法】 选择北大核心收录的6种代表性医学学报类期刊,在CNKI中检索各刊2010年发表的零被引论文及其下载频次,结合下载频次的高低分析6种期刊零被引论文的文章类型、内容、研究方向和基金资助情况。【结果】 该类期刊的零被引论文率不一,与期刊质量有一定关系。零被引论文类型以基础研究类占比最高,病例报告占比较高且篇均下载频次最低;论文内容中,技术方法类占比不小,但下载频次高于非技术方法类;不同研究方向的论文下载特点存在差异;零被引论文中基金论文占比不小。【结论】 掌握医学学报类期刊零被引论文的规律,对减少发表零被引论文,提升期刊影响力提供了另一条途径。 相似文献
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他引率对影响因子及被引频次的影响分析 总被引：2，自引：0，他引：2
影响因子是一个国际上通用的期刊评价指标,由于它是一个相对统计量,所以可以公平地评价和处理大期刊和小期刊,由于发文量不同所带来的偏差.在影响因子、被引频次、即年指标,基金论文数、他引总引比以及被引半衰期等各项期刊评价指标中,影响因子与被引频次无疑占据着极其重要的地位. 相似文献
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为明确农业科学类研究热点,深入分析我国农业科学类期刊高被引论文的特征,借助中国科学文献计量指标数据库(CSCD-ESI)的统计基线指标,以2007-2017年105种农业科学类核心期刊的2520篇高被引论文为研究对象,分别从其发表年份、被引频次、作者来源地区、机构、学科、基金资助情况等方面进行分析和比较.结果表明,2007、2008、2010年的高被引论文数量和总被引频次较高;北京市、江苏省、陕西省及中国农业大学、西北农林科技大学、南京农业大学等高等院校是高被引论文产出的主力军;科技部其他基金、国家自然科学基金及省市基金是高被引论文的主要基金来源;《农业工程学报》《中国农业科学》《作物学报》3刊的高被引论文数量占总量的42.14％;农业基础科学、农作物、农业工程、园艺、林业方面的高被引论文最多,合计占比达71.75％;在17篇被引频次100次以上的高被引论文中,有8篇综述性论文,占47.06％;说明我国农业科学类期刊的高被引论文的地区机构分布和学科分布均较为集中,小部分优质期刊是高被引论文的主要载体,编辑应加强对相关作者群体、学科内容的关注,加强组稿、约稿和优质稿源的拓展工作. 相似文献
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以被引频次作为论文质量指标,对影响力不同的《中国农业科学》《干旱地区农业研究》《华北农学报》《华南农业大学学报》《广东农业科学》五刊近11年(2007—2017年)刊登的不同基金级别论文进行分析。研究结果表明:(1)基金论文比与期刊影响力没有必然联系,而国家级基金论文比与期刊质量及影响力密切相关;(2)基金论文质量不一定优于非基金论文,论文只要学术质量高,即使没有基金资助仍然可以得到较高的关注与引用;(3)基金论文质量与资助的基金级别也没有必然联系,不能单从基金级别角度选用稿件或评价论文质量。基于以上结论,提出相关建议:期刊编辑部要客观对待基金论文比以及不同基金级别论文和非基金论文,审稿上严格把关,用稿遵循“质量为王”的原则;一些单位机构评价论文质量不应唯核心期刊论、唯资助基金级别论,应结合论文被引频次和同行评议进行科学客观的评价;对期刊质量评价可补充国家级基金论文比、篇均被引量、零被引论文率等指标。 相似文献
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竞争情报论文下载频次与被引频次比较研究 总被引：1，自引：0，他引：1
对2005~2009年期刊发表的竞争情报论文进行下载频次和被引频次比较分析,得出高下载频次和高被引频次所对应论文的差异以及下载频次与被引频次之间的关系,并且指出具有高下载频次的论文在一定程度上可以用来反映用户需求及学科发展趋势,应当将其纳入衡量论文质量的标准之中。 相似文献
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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
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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
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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
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《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
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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
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《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
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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
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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
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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
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《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献