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1.
【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
2.
【目的】分析3种作物类期刊146篇入选F5000论文,以明确其文献计量学特征。【方法】 收集入选论文的相关信息及在万方和WoS中被引频次,并进行统计分析。【结果】 146篇入选F5000论文在万方数据库中篇均被引41.3次;以栽培技术类论文数最多,占43.2%,且篇均被引频次较高,仅次于综述类论文。61篇论文（41.8%）在WoS中被引用,篇均被引3.4次;以综述和生物技术类论文为主。入选论文主要来自大学;最多一位作者有13篇论文,存在核心作者;89.0%的论文由国家项目资助。【结论】 入选F5000论文受到国内学者广泛关注,但在WoS中影响力较小;作物类期刊应重视向大学组约稿,特别是高质量的方法类和研究热点论文及知名专家的综述,将有利于提高期刊的总被引频次和影响力。 相似文献
3.
【目的】比较学术论文的第一作者和合著者的生产力、影响力与论文发表后被引频次的相关性差异,为期刊编辑初审筛选高被引论文提供一定的参考。【方法】以《编辑学报》和《中国科技期刊研究》2017年发表的484篇论文为研究对象,其中独著论文142篇,合著论文342篇。利用中国知网分别收集所有论文的被引频次,并以论文所有作者2014―2020年的发文量表征作者生产力,以论文作者该时段的h指数表征作者影响力,对484篇论文的第一作者和合著者的生产力、影响力与论文的被引频次的相关性进行统计分析。【结果】独著论文的被引频次与作者生产力无关（r=0.163,P=0.053）,与作者影响力呈正相关（r=0.287,P<0.001）。在合著论文中,论文的被引频次与第一作者生产力、影响力均呈正相关（r=0.195,P<0.001;r=0.320,P<0.001）,与合著者的生产力、影响力也均呈正相关关系（r=0.115,P<0.001;r=0.134,P<0.001）。【结论】无论是独著论文还是合著论文,第一作者和合著者h指数高的论文发表后被引频次高。若合著者发文量较高,论文发表后被... 相似文献
4.
付中静 《中国科技期刊研究》2016,27(4):346-351
【目的】分析Web of Science（WoS）数据库近十年撤销论文的引证特征,探究撤销行为对学术界的净化效果。【方法】分析撤销论文数量、被引频次等信息和期刊影响因子（impact factor,IF）的相关性,撤销时滞与论文被引频次的相关性;计算高被引撤销论文对IF的贡献率;评价撤销时滞对撤销前、后被引频次的影响。【结果】 76种期刊（撤销论文数量≥5篇）IF和撤销论文数量、总被引频次、撤销后被引频次、篇均被引频次相关(均为P<0.05)。撤销时滞和撤销论文总被引频次相关（P=0.000）。随撤销时滞延长,撤销前被引频次逐渐增大。高被引撤销论文对期刊IF的贡献率为0.00%～2.00%。【结论】高IF期刊发表的、撤销时滞长的撤销论文对学术界的负影响较大;肯定期刊进行自我净化效果的同时,建议科研管理部门、期刊编辑和科研人员等加强对撤销论文及其不良影响的关注。 相似文献
5.
丁佐奇 《中国科技期刊研究》2017,28(12):1166-1170
【目的】 研究论文使用次数与被引频次的相关性,以判断使用次数是否可作为论文影响力评价的客观指标。【方法】 利用Web of Science(WoS)新推出的“文献级别用量指标”,对《中国天然药物》高使用和高被引论文的使用次数和被引频次的相关性进行研究,并研究整合替代医学学科论文使用次数对被引频次的表征意义。【结果】 被引频次、使用次数及使用次数(180天)三者之间互相具有较好的相关性。2014年和2015年高使用论文获得高引用,表明期刊可以利用论文发表2年内的使用次数预测其未来是否高被引;年代越久的高被引文献,也可能带来后续使用次数的二次提高。【结论】 论文使用次数与被引频次的相关性研究未能形成定论,时间跨度的选择可能是造成矛盾结果的主要原因。论文使用次数与被引频次的峰值出现时间不同,但二者呈正相关,使用次数可作为论文影响力早期评价的客观指标。 相似文献
6.
【目的】 分析《海洋科学进展》和《海洋学报》的高被引论文,为《海洋科学进展》的发展和创新提供参考。【方法】 通过中国知网检索《海洋科学进展》和《海洋学报》的高被引论文,从被引频次、下载次数、论文类型、学科分布及第一作者等信息分析了两刊优势学科、高被引论文类型,并对两刊被引频次及下载次数进行相关性分析。【结果】 对两刊近10年被引频次排名前20论文的下载次数和被引频次进行了相关性分析,发现其相关系数均大于0.5;对两刊在网络盛行前后各5年被引频次排名前50论文的被引频次及下载次数进行相关性分析,发现网络发展使得其相关性均有下降趋势。【结论】 网络发展加剧了期刊间的竞争,期刊的数字化建设不容忽视。在日趋平等、便利的网络平台上,准确的期刊定位和具有原创性观点的高质量论文仍是科技期刊发展的根本。 相似文献
7.
王新 《中国科技期刊研究》2017,28(7):647-657
【目的】 分析基础学科期刊论文被引的分布特点,探究低被引论文区间的界定和评价方法。【方法】 以科学引文索引(WoS)收录的65种凝聚态物理学期刊(CMJ)的被引数据为研究对象,以统计学原理和文献计量学方法,比较分析h指数核心区、被引频次小于篇均被引次数论文,以及最低被引论文的累计被引频次为期刊总被引频次的5%,10%和20%区域内论文的被引特性,以此确定CMJ最合理的低被引区。【结果】 CMJ整体零被引率仅为10%,可视为高质量的期刊集合。最低被引论文的累计被引达到总被引频次20%的区域和被引小于篇均被引次数的区域具有被界定为低被引区的统计学依据。零被引率、低被引率和低被引密度与传统评价指标IF、h指数、篇均被引次数以及可被引论文数、总被引频次不存在强相关性,满足作为独立评价指标的充分条件。【结论】 由零被引率、低被引率和低被引密度构成复合指标Evel {rN0,rN x,rTci x}用于描述期刊的低被引特性;由h指数和特定区域内的篇均被引次数构成另一个复合指标Evel {h,Ci 20%,Ci cipp,Ci h}用于比较期刊的被引结构特征。研究表明期刊被引结构可以构形分类,而评价参数在不同被引区域有可能存在竞争优势;因此评价期刊的低被引情况要以分析被引结构为前提。期刊的综合评价应该使用多参数多维度指标。 相似文献
8.
方红玲 《中国科技期刊研究》2018,29(2):165-170
【目的】 比较国内外眼科学、数学和环境科学期刊被引半衰期的差异,为期刊编辑今后制定工作策略提供参考。【方法】 选择国内外眼科学、数学和环境科学期刊各10种,收集期刊的被引半衰期以及其他期刊评价指标,比较国内外相同学科期刊被引半衰期的差异;采用Spearman 相关分析法,对国内外眼科学、数学、环境科学期刊被引半衰期与其他文献计量学指标的相关性进行分析。【结果】 我国眼科学和环境科学期刊被引半衰期均短于国外相同学科期刊,我国大多数数学期刊被引半衰期长于国外数学类期刊。我国眼科学期刊被引半衰期与引用半衰期呈正相关,环境科学期刊被引半衰期与平均引文数呈正相关;国外3个学科期刊被引半衰期均与引用半衰期呈正相关(P均小于0.05)。【结论】 我国眼科学和环境科学期刊编辑今后首要任务是提升期刊国内显示度和持久影响力,数学期刊则需提升国际显示度和影响力。 相似文献
9.
【目的】 利用文献计量学研究医学学报类F5000论文特征,为相关期刊争取稿源、提高期刊质量提供参考。【方法】 利用F5000论文平台得到2017年“中国精品科技期刊”中的医科大学学报,收集相关学报2012—2016年所有入选的F5000论文,并分析相关论文特征。【结果】 2017年F5000精品期刊共收录医科大学学报7种,F5000论文283篇,2011—2013年入选的文献数量最多。临床研究类论文数量最多;综述的篇均被引频次和篇均下载频次最高,其次是流行病学研究;基础研究论文的篇均被引频次最低;基金资助论文的数量和篇均下载频次略高于无基金资助论文。F5000论文集中在某些研究方向和研究专题。部分院校作者发表的F5000论文数量较多。【结论】 我国医学学报的办刊质量需要进一步提高,应注意期刊栏目设置,留意关注度高的研究方向和研究主题,根据各自地理优势有的放矢地组约重点科研机构的优质稿件,以促进期刊质量和影响力的提升。此外,应采取措施进一步完善F5000展示平台,最大程度发挥平台功能。 相似文献
10.
【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
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.
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
13.
《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
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.
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
20.
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