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从文献计量的视角,深入分析我国风险评估研究领域近20年的研究内容、方法及趋势。以CNKI期刊数据库1997-2017年发布的风险评估领域相关文献为研究对象,按发文量划分为三个阶段,通过关键词共现分析、社会网络分析及数据可视化等方法,总结风险评估研究的潜在热点和发展趋势。通过词频统计及网络分析发现信用风险、食品安全、环境风险及信息安全,是风险评估的主要研究内容。模糊综合评估和层次分析法是应用频次最多的方法,但随着时代需求的变化和数据收集与存储技术的发展,一些基于大数据和深度学习的方法,在风险评估研究中的受关注程度得到提升。 相似文献
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以北京大学《中文核心期刊要目总览》(2011版)中所收录之19种中医学期刊2004-2012年的发文和引文作为初始数据样本,结合引文分析与社会网络分析等方法,对中医学期刊间引用网络、中医学期刊与其他学科期刊及外文期刊的引用网络进行分析,探讨中医学期刊引用网络的结构和特征。 相似文献
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战略联盟作为当今企业应对日趋激烈的市场竞争,提高企业核心竞争力的一种方式,关于联盟管理的研究也越来越多,本文主要通过对Web of Science数据库中收录的1990-2012年间发表的,主题为Allance Management,即联盟管理的文献进行收集和整理,利用文献计量相关分析方法分析文献的空间分布、期刊分布,在时间序列上对中美两国的发文进行了对比,然后以共词分析、社会网络分析和绘制科学知识图谱的方法,挖掘近22年来国际上对于联盟管理这一主题的研究进展和研究热点,得出供应链管理、知识管理和创新等几个在联盟管理研究中较为核心的主题,帮助理解联盟管理这一领域的研究状况,意在为今后的研究和学习提供借鉴。 相似文献
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王菲菲 《科学学与科学技术管理》2014,(12)
综合发文与引文这两个相互对应的角度,融合作者合作网络分析、作者关键词耦合分析、作者共被引分析、作者文献耦合分析、作者互引网络分析等方法,形成了一种综合视角下的学术共同体与主题结构发现以及作者学术交流与贡献影响力的比较分析框架,然后利用该思路对科学计量学这一领域进行探索研究;实现了科学计量学领域内核心作者所构成的不同层面的研究群体划分以及主题结构发现,并利用社会网络的中心性测度对他们在不同维度的影响力情况和综合影响力进行了规范处理与测度分析,进而得出了该领域最有影响力的作者排序。 相似文献
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中国人力资源管理问题研究进程——基于引文分析的可视化研究 总被引：1，自引：0，他引：1
《软科学》2015,(11):97-100
通过对收录在CKNI中国知网数据库中的2000篇研究成果进行文献计量分析,归纳了中国本土化人力资源管理研究的主题变更及发展历程。结合多种分析软件进行文献计量分析,最终通过社会网络分析软件(Ucinet)得出高频关键词贡献相似矩阵的社会网络分析图。研究发现,20年来该领域的研究重点集中在宏观人力资源管理和战略人力资源管理方面,其中人力资源测评研究占微观研究领域的半壁江山;人力资源管理各模块中,研究成果产出较高的是人力资源开发和人员激励模块;横向研究明显多于纵向研究,医院、农村、企业和高校成为学者关注较多的领域;研究模式从定性研究向定量研究过渡,多数研究仍遵循"现状、问题、影响因素、对策"的写作思路,其中影响因素分析成为实证研究分析的切入点。最后,概括了中国本土人力资源管理研究的特点和趋势。 相似文献
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【目的/意义】微博是公共图书馆进行社会推广、业界交流、用户交互的重要渠道,从社会网络视角分析公共图书馆微博意见领袖的社会网络结构特点及影响力,可为公共图书馆优化微博营销策略、提高自身影响力提供参考。【方法/过程】选取50位公共图书馆微博意见领袖,首先运用社会网络分析方法揭示其社会网络结构特点;其次利用关注量、发文量、粉丝量、转评赞数量分析其活跃情况及影响力。【结果/结论】公共图书馆微博意见领袖地区分布不均衡,联系较紧密,但集中程度较弱;小团体在活跃度、影响力等方面呈现相似性;多数图书馆处于低活跃度、低影响力区间;粉丝量和转评赞数量随着活跃度的提升表现出“低值时平稳波动,高值时迅速增长”的现象。【创新/局限】通过社会网络分析方法在一定程度上掌握了我国公共图书馆微博意见领袖社会结构及影响力。仅从关注量、发文量等客观数据角度分析公共图书馆微博影响力,未来应结合文本分析等方法提高影响力分析的深度。 相似文献
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CSSCI管理学来源期刊引文网络结构分析 总被引：8，自引：0，他引：8
运用社会网络分析方法分析了34种管理学期刊之间的引用关系.运用社会网络分析理论及软件Ucinet对CSSCI收录的管理学34种期刊引用网络进行网络密度分析、点度中心性分析、中间中心性分析,绘制期刊引用网络图谱,统计了各期刊高频关键词.经分析发现,科学学类期刊之间的引用关系紧密,研究热点具有很高的一致性.最后,对存在问题进行了简要讨论. 相似文献
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近年来,我国重大科技基础设施快速发展,但有关其国际合作研究发展趋势的分析研究尚未得到足够的重视。本研究基于上海光源2009-2014年发表的SCI论文数据,综合应用文献计量和社会网络分析方法,对比分析了依托上海光源开展国际合作研究的整体发展趋势,不同国家、研究机构在国际合作研究中的参与度,以及研究领域与主题的变化趋势。结果显示上海光源在运行初始的5年中,其国际合作研究快速增长,国际合作研究发文量、合作国家、研究机构数量整体均呈现增长趋势。国际合作研究领域主要集中在生化与分子生物学领域,而材料科学领域的国际合作研究在2013年开始出现了明显的增长,说明上海光源对材料科学、结构生物学等前沿用户学科的支撑作用进一步加强。 相似文献
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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
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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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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
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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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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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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
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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