共查询到20条相似文献，搜索用时 62 毫秒
1.
国内竞争情报的战略地位不断提升,本文基于CNKI、CSSCI数据库,利用可视化软件,对国内已有文献进行研究,探析国内竞争情报发展演进过程。通过对文献统计分析,发现研究主题的多样化;通过作者共被引分析,发现研究主题发展过程中代表人物及其更替;通过关键词共现分析,探析研究主题的热点演进;通过文献共被引分析,总结国内竞争情报发展的4个核心领域："竞争情报基础知识研究"、"竞争情报的实践研究"、"竞争情报系统研究"、"竞争情报的跨学科研究",并分析聚类文献群的特征。最后,根据国内竞争情报发展演进过程,归纳我国竞争情报发展过程面对的挑战。 相似文献
2.
[目的/意义]随着科学技术的高速发展、知识交叉越来越多、科学与社会的关系越来越复杂,如何利用计量学的原理、方法与工具处理这些错综复杂的关系显得尤为重要,可见进一步厘清我国计量学发展轨迹具有重要意义。[方法/过程]本文基于CNKI、CSSCI数据库,利用可视化软件,对国内已有的文献进行分析,探析国内计量学发展的研究演进过程,通过文献的梳理分析,使用文献的共引分析、共词分析方法对我国计量学发展轨迹及研究趋势进行可视化分析。[结果/结论]本文通过文献共被引分析,发现我国计量学研究的两个核心领域;通过作者共被引分析,发现研究主题演进过程中代表人物及其更替;通过关键词共现分析,掌握目前国内"五计学"研究热点的演进。 相似文献
3.
《软科学》2021,35(2):102-108
运用CiteSpace文献计量软件,采用文献共被引网络、关键词共现网络及突现词分析法,绘制人才政策研究领域的知识图谱,识别研究热点,分析其演变趋势并探索未来发展方向。结果表明:我国人才政策研究可分为人才政策效果评价、人才政策满意度影响因素、人才治理体制机制三大类别,主要包括人才培养、人才环境、科技人才和人才政策创新四类核心知识群,其中人才引进、人才资源开发、人才激励是该领域的热点;现有的人才政策主题间关联性弱,网络密度较低,研究分支较多,缺少完善的研究体系与有力的理论支撑。据此,未来的人才政策研究应加强学者合作与学科交叉,探索人才制度优势向治理效能转化的实施路径,促进区域间人才政策的协同共治与人才队伍共建共享,打造高质量的人才政策体系。 相似文献
4.
基于知识图谱的国外社会网络分析领域可视化研究 总被引：2，自引：0，他引：2
以Web of Science数据库中1999年-2010年的文献数据为研究样本,首先对样本数据进行计量分析,再借助CiteSpace信息可视化软件绘制知识图谱,分析了国外社会网络分析(SNA)领域研究所涉及的重要学科领域和国家(或地区)分布情况,通过文献共被引分析研究演进过程和规律,通过共词聚类分析研究热点,最后探析前沿领域和研究趋势,为国内社会网络分析领域的研究提供必要的参考借鉴。 相似文献
5.
本文以国内外科技人才引育政策为研究重点,围绕早期科技人才培养、科技人才跨界流动及多元化科技人才评价等方面,梳理了世界主要科技强国在科技人才引育方面的优秀经验,结合我国科技人才引育现状进行分析,并基于我国早期科技人才培育政策体系缺乏系统性和前瞻性、国际科技人才引进渠道和政产学研流动机制尚待健全、科技人才激励和服务模式有待创新、识才评才机制鲜有突破等实际问题,提出强化STEM教育和青年人才培养,健全产学研流动机制和外籍人才“精准引才”策略,建立多元开放的识才评价体系及科技人才创新和服务场景等具有针对性的科技人才引育建议。 相似文献
6.
为全面把握国际E-Science领域的研究主体、理论基础和发展趋势,以Web of Science数据库中13年来E-Science领域的研究论文作为分析对象,首先对研究文献进行计量分析,然后借助CiteSpace可视化软件分析国际E-Science领域的学科领域、研究力量和代表作者,运用文献共被引分析剖析支撑该领域发展的关键文献分布,运用共词聚类分析揭示该领域的热点前沿和动态演进过程。 相似文献
7.
对国际上搜索引擎领域的研究文献进行了比较细致、深入的考察,采用可视化方法进行定量分析并制作了有关知识图谱,明晰了国际搜索引擎研究的总体趋势和发展脉络。通过对高被引文献的深入解读和定性分析,以及近几年相关文献的共词分析,揭示了国际上搜索引擎研究的起源和发展,以及从进入快速发展期至今四个阶段的研究热点演进历程。最后,总结和展望了国际搜索引擎研究的热点方向。 相似文献
8.
对国际上搜索引擎领域的研究文献进行比较细致、深入的考察,采用可视化方法进行定量分析并制作有关知识图谱,明晰国际搜索引擎研究的总体趋势和发展脉络。通过对高被引文献的深入解读和定性分析,以及近几年相关文献的共词分析,揭示国际上搜索引擎研究的起源和发展,以及从进入快速发展期至今四个阶段的研究热点演进历程。最后,总结和展望国际搜索引擎研究的热点方向。 相似文献
9.
[目的/意义]人工智能已成为推动新一轮科技革命和产业变革的重要技术力量,世界各国加紧出台了相关政策。通过对当前研究进行及时梳理,可为今后国内人工智能政策的理论推进及政策出台和完善等提供指导。[方法/过程]以国外SSCI和国内CSSCI期刊数据库收录的395篇研究论文为样本,采用文献计量分析和比较研究法对中外人工智能政策研究的高共被引文献、热点主题及演进趋势等进行深入探索。[结果/结论]与国外相比,国内研究起步较晚但势头迅猛;高共被引文献反映了人工智能领域存在的问题和风险、应用前景、技术革新及对社会的影响;国外研究热点涵盖了知识管理等十二类主题,而国内研究热点则包括国家治理背景下人工智能政策发展路径等三类主题;国外研究的演进特征体现在三个方面,而国内研究则体现在两个方面。最后,从加快形成和构建人工智能政策研究的理论框架体系等三个方面提出对国内研究的启示。 相似文献
10.
《科技通报》2017,(6)
基于Cite SpaceⅢ可视化知识图谱软件对SCI、SSCI数据库中1998至2015年收录的主题词为"智能信息处理"领域的2214篇文献通过发文量时间分布、科研合作、文献共被引、主题词共现来进行分析。结果表明国际上智能信息处理领域整体还处于研究上升期,该领域存在一定量的研究者合作小团体,国际机构之间、国家及地区之间的合作交流相对较少,研究主要集中在计算机科学、工程学等学科领域,文献共被引探寻到的6篇关键节点文献较好地展示了智能信息处理领域的发展演进路径,主题词共现图谱中的研究热点囊括了该领域的研究对象、模式、理论及方法,研究前沿则代表了该领域未来的发展方向。 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.
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
15.
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
16.
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
17.
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
18.
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
19.
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
20.
《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