首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
2003~2008年眼科学高被引论文统计分析   总被引:12,自引:6,他引:6  
为了解国内眼科学高被引论文的期刊分布、年份分布、合著情况、作者分布、机构分布(只统计第一作者机构)、基金资助情况、论文主题分布及论文类别分布等,在中国期刊网上检索2003-2008年眼科学被引论文7 652篇,其中高被引论文(被引频次(10,包括自引)191篇,利用EXCEL 2003对这191篇眼科学高被引论文进行分析和比较。统计结果表明: 191篇眼科学高被引论文中发表在2003-2006年依次为91篇、63篇、36篇和1篇;发表在《中华眼科杂志》73篇、《中国实用眼科杂志》27篇、《国际眼科杂志》21篇、《眼外伤职业眼病杂志》17篇、《中华眼底病杂志》15篇、《眼科新进展》10篇、《眼科》9篇、《眼科研究》6篇等; 191篇眼科学高被引论文合著人数占前3位的分别为4人、3人和1人; 191篇眼科学高被引论文的机构分布位于前5位的分别是中山眼科中心、北京同仁眼科中心、第四军医大学、复旦大学和山东省眼科研究所。  相似文献   

2.
为了给广大作者投稿和各骨科学期刊编辑策划、选题组稿、审稿提供参考依据, 2010年9月21日检索《中国引文数据库》,对我国12种中文骨科学核心期刊中各刊自创刊以来所刊载文章被引次数>50篇的论文 (共计427篇)进行深入剖析,探讨骨科学高被引论文的期刊及年份分布、合著情况、作者分布、机构分布、栏目分布及基金资助情况等。结果显示: 427篇高被引论文中,《中华骨科杂志》有231篇,《中华创伤杂志》有46篇,《中国脊柱脊髓杂志》有41篇等。高被引论文发表的年份主要集中在1994年至2002年,每年均超过30篇。427篇高被引论文的合作人数排名前5位的是1人、5人、3人、4人、2人,所占比例为76.2%。有5篇及以上高被引论文的作者有8位。有10篇及以上高被引论文的机构有11家。临床研究类论文占高被引论文比例最高,为54.4%;基础研究类文章次之,占16.9%。仅有43篇高被引论文有基金资助。  相似文献   

3.
利用中国生物医学文献引文数据库(CMCI),检索国内12种皮肤科学杂志1999~2008年历年高被引论文200篇,对论文的期刊分布、第一作者分布、机构分布、主题分布、文献类型分布、基金资助情况等进行分析。表明皮肤科学高被引论文的分布呈现明显的集中性和分散性,这种集中性体现在期刊、机构、主题和文献类型四个方面,而分散性则体现在作者方面;中英文摘要对国内作者对中文文献的引用可能没有明显的影响;临床研究类论文更易获得高被引,实验室研究类论文也可以获得高被引,但内容一定要直接指导临床实践,且论文中所采用的研究方法具有普遍性。  相似文献   

4.
【目的】通过分析国内地理学中文核心期刊的零被引论文特征,为地理学科技期刊选题策划、稿源筛选、提高影响力提供参考。【方法】以4次入选《中文核心期刊要目总览》的16家地理学期刊作为研究对象,分析其2009—2010年零被引论文的期刊分布、作者、基金资助、页数、摘要、学科和类型等的特征。【结果】所统计期刊论文零被引率较低,仅为1.79%;作者中学生占比较大,以博士为主,高等院校占比大于研究所;基金资助论文占比大于无基金资助;论文页数大部分<6页;摘要信息存在不同程度的缺失;学科分布上以天文学、地球科学、经济学、农业科学等为主。【结论】减少或者避免零被引论文需要期刊主办者、科研工作者、科研评价机构等的参与。  相似文献   

5.
利用ESI数据库研究植物动物学领域的热点文章特征,统计分析作者/机构/国家合作度、基金论文影响力、高被引期刊/机构、热点主题词等信息,发现热点论文具有合作研究、重大基金资助、高被引期刊/机构相对集中等共性特点;热点主题词分析表明针对拟南芥等高频研究模式生物的基因研究是该领域当前的研究热点。根据数据分析结果,提出了期刊编辑选题、组稿的一些策略,指出科技期刊应当重视相关领域的热点论文分析,为综合制定期刊国际化形势下的组稿策略提供定量分析的科学依据,以提升期刊学术质量和影响力。  相似文献   

6.
【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   

7.
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   

8.
【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   

9.
近年国内关于基金论文比作为科技期刊评价指标一直存在极大争议。为了客观评价基金论文比在科技期刊评价中的作用,选取2009年SCI数据库收录眼科学期刊和论文为研究对象,对基金论文与非基金论文的被引率和篇均被引频次、期刊基金论文比与影响因子、5年影响因子、特征因子和零被引论文率的关系做了统计分析。向全球8525个眼科医生发放E-mail问卷调查表,对每个SCI眼科学期刊打分、排序,并与期刊基金论文比排序进行相关分析。按照被引频次高低,将所有论文分为4组,被引频次≥10的论文为Ⅰ组,5~9者为Ⅱ组,1~4者为Ⅲ组,零被引论文为Ⅳ组,计算4组论文的基金论文比,并进行统χ2检验。结果显示,2009年45种眼科期刊共发表论文7319篇,被引用6280篇,零引用1039篇,被引频次47333,论文被引率为85.80%,篇均被引6.467次。各种基金资助论文3110篇(42.49%),被引用2899篇,被引频次25404,论文被引率93.21%,篇均被引8.168次;无基金资助论文4209篇,占总论文的57.50%,论文被引率为80.33%,篇均被引5.21次。经Spearman相关检验,基金论文比与影响因子、5年影响因子、特征因子的相关系数分别为0.619、0.523和0.624,与问卷调查的相关系数为0.462。Ⅰ、Ⅱ、Ⅲ、Ⅳ组基金论文比分别为57.15%、51.51%、37.29%和20.31%,Ⅰ与Ⅱ、Ⅱ与Ⅲ、Ⅲ与Ⅳ组相比,χ2值分别为10.542、90.409和100.630(均为P<0.001)。因此认为,无论是论文被引率还是篇均被引频次,基金论文均明显高于非基金论文;期刊基金论文比与影响因子、5年影响因子、特征因子及读者调查得分均呈显著正相关;高被引频次组的论文其基金论文比明显高于低被引频次组论文。显然,基金论文比作为科技期刊评价指标是科学合理的。  相似文献   

10.
【目的】分析2012—2014年F5000农业科学类论文的基金资助情况,为农业期刊编辑的组稿、约稿提供参考。【方法】 筛选并完善2012—2014年入选F5000的829篇农业科学类论文的被引频次、基金项目名称等信息,利用Excel对论文与基金级别、基金数量的关系进行分析。【结果】 829篇论文的基金论文比为97.10%,其中有61.88%和62.85%的论文分别得到国家级、省部级基金资助,有78.05%的论文获得1~3项基金资助,论文篇均被引频次随获助基金数量增加而降低;中外合作项目和无基金资助的论文入选数量较少,但这两类论文的篇均被引频次却高达67.00和70.13。【结论】 编辑在组稿、约稿时应关注获得国家级、省部级和中外合作项目资助的研究课题,并且应摒弃基金数量越多论文质量越优的偏见。  相似文献   

11.
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.
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.
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   

14.
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   

15.
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   

16.
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   

17.
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   

18.
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   

19.
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.
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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号