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1.
国家自然科学基金对纳米材料的资助领域分析——基于共词网络法 总被引：1，自引：0，他引：1
通过对国家自然科学基金2000—2010年纳米材料资助项目的关键词进行分析,利用pajek软件对关键词绘制网络图谱,分析得出自然基金对纳米材料资助的主要领域归为3类,即纳米材料的制备、合成、应用、性能及纳米结构;各种纳米材料的研究如碳纳米管、各种聚合物、纳米晶、纳米粒子、纳米半导体、纳米复合材料等;纳米材料的组装、自组装、特异效应的研究。这些是自然基金对纳米材料资助的主要领域,也是我国纳米材料的研究热点。建议加强投入对纳米材料资助较弱的研究方向,如纳米陶瓷材料、纳米材料的形貌控制和缺陷控制等。 相似文献
2.
采取文献计量学的方法,对2000年-2009年中国图书情报类核心期刊基金资助论文进行分析,从资助基金的级别与比例、论文在期刊上的分布、高产出作者及其重点研究领域、高产出机构及其重点研究领域、关键词词频分布等方面,描述中国图书情报学基金资助研究的基本特点和整体状况.同时,将数据分为2000年-2004年、2005年-2009年两个阶段进行比较分析,揭示中国图书情报学基金资助研究的演变过程和发展趋势. 相似文献
3.
《内蒙古科技与经济》2020,(2)
以中国知网(CNKI)期刊数据库为数据源,对近年来所载数字人文领域相关论文的年度分布、核心作者、基金资助论文、高频关键词、被引及下载等方面进行统计分析,为数字人文领域研究的理论和实践提供参考。 相似文献
4.
采用信息可视化技术对近五年CSSCI有关竞争情报研究论文进行定量统计和定性分析,从相关论文研究方法、所属学科类别、发文作者、发文机构、论文期刊分布和基金资助六个方面考察了我国竞争情报研究的现状;通过关键词共现和文献共被引分析发现,竞争情报系统、竞争情报相关理论、人际网络等八个领域是我国竞争情报研究的热点;同时,从研究范围、与环境相适应性、对方法和技术的关注度等八个方面总结了研究特征. 相似文献
5.
为全面了解"国创计划"研究现状和主题演进,采用中国知网数据库中"国创计划"项目基金资助的发表在中文核心和CSSCI期刊上的文献数据,采用文献计量和可视化分析方法,利用COOC9.9进行作者合作、机构合作、关键词共现以及聚类等可视化分析.结果显示:发文量呈逐年上升且高位波动趋势;发文量≥30篇的一级机构62个,多数机构间开展了合作;发文量≥100篇的学科高达16个,前20个学科累计发文量占比为85％;文献分布在1068种中文核心和CSS-CI期刊上,平均刊文密度为5.04篇;综合影响力指数最高为14.35;作者最大发文量为31篇,核心作者413位;10次以上高频关键词129个,主要分布在三个领域.从宏观、中观和微观三个层面提出了相关对策建议. 相似文献
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7.
我国食品安全研究现状与热点的文献计量学分析 总被引：1，自引：0，他引：1
采用文献计量法对CNKI全文期刊数据库中2004—2011年收录的食品安全研究文献的发表时间、获基金资助情况、著者、研究机构及期刊分布情况进行分析,研究我国食品安全的发展现状。进一步结合共词分析法与战略坐标对食品安全研究发展态势作战略情报分析,研究结果表明,当前我国食品安全领域共有11个研究热点,预测各研究热点的发展趋势,为食品安全战略决策与专业研究人员提供资料参考。 相似文献
8.
首先,利用CNKI《中国学术期刊网络出版总库》统计1979-2011年我国信息组织研究领域的论文产出量、论文的期刊分布和机构分布。其次,通过分别统计五个时间段高频关键词,从纵向角度分析其研究热点的变化。最后,利用共词方法和社会网络分析法,构建共词网络结构图和核心词网络结构图,对我国信息组织领域高频关键词的共现情况进行深入分析,了解信息组织领域的研究热点和它们之间的相互关系。 相似文献
9.
分析APEC各成员在计算机科学领域发表的基金论文的基本概况和合作现状,对加深APEC各成员科学现状的认识,促进APEC科技创新合作进程、提升科技服务的水平和绩效,强化科技与经济的结合度等方面具有重大的意义。基于Web of Science数据库平台,运用文献计量方法,从基金论文数量、年代分布、篇均基金数、被引频次和基金资助机构5个方面定量分析了各成员基金资助科学论文的产出力和影响力,通过社会网络分析工具,绘制了APEC成员基金论文合作网络及特点。结果显示,在计算机科学领域,基金资助对高水平科学论文的产出具有重要的作用,对于中国尤为显著;基金资助对科学论文的平均影响力不明显,但对高被引文献的产出影响显著;资助高水平科学论文最多的资助机构均出自各成员科学技术界国家级最高水平的学术机构;APEC各成员之间科技合作密切,其中美国和中国合作最多。 相似文献
10.
基于ESI的植物动物学研究领域热点论文分析及对编辑组稿的启示 总被引：3，自引：3，他引：0
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
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