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1.
[目的/意义]对比论文数据和专利数据的特征指标,识别热点、新兴、潜在和消亡研究前沿主题。[方法/过程]利用LDA主题模型,对智能汽车领域相关的论文数据和专利数据进行主题提取,计算两个数据源下各主题的强度和主题新颖度并进行对比分析。[结果/结论]本文识别出路径规划技术等热点研究前沿6个、智能计算等新兴研究前沿2个、安全认证技术等潜在研究前沿6个、车载平台等消亡研究前沿6个。本文在前沿识别方法上进行了创新,有效识别出领域内研究前沿并进行分类,为相关机构和研究人员提供借鉴。 相似文献
2.
随着越来越多的交流、合作、共享、搜寻和收集信息发生在多样化的社会网络中,海量的网络数据正成为科学研究的数据源。为了解以网络数据作为数据源的经管领域科学研究的动态景观,本文基于从SSCI及SCI-E数据库提取的相关文献数据,应用科学计量的方法及指标、社会网络分析方法和突现检测算法,开展该领域的测度研究。研究发现该领域的科学产出增长显著;美国在该领域占据绝对领导地位,中国论文世界份额上升最为明显,具有较高的科学影响力及合作影响力;该领域跨国家/地区的科学合作网络呈现出相对稳定的扩张;该领域的研究热点主题有行为、信任、挖掘、内容、情绪、态度、预测等,前沿主题有内容、大数据、社会商务、情绪分析、行为等。本研究为未来基于网 相似文献
3.
设计并实现了面向主题的专利分析系统.主要包括根据专利分析需求抽取专利数据放入本地专利数据源,对专利数据源进行清洗、转换生成纯净的专利基础数据库,根据不同分析主题模型从基础数据仓库中抽取、转换生成数据集市,并在数据集市的基础上建立多维立方体和KPI指标,生成专利地图完成从不同主题对专利数据进行自动分析的功能. 相似文献
4.
以1900~2013年Web of Science(WOS)收录的动物学(Zoology)为主题的文献为数据源,借助WOS分析功能和CiteSpaceⅡ信息可视化软件,对数据进行共引、聚类以及突变分析,揭示动物学中Zoology主题研究的优势国家和地域,追踪和揭示领域前沿和热点。结果发现:纵深发展形成了动物系统学和保护生物为基础的两个前沿和趋势,形成了"中国"、"新物种"等研究热点,我们应以此为契机,进一步加强与国际的交流合作,将动物进化学和保护生物学有机结合,提出具有创新性及重大影响的新理论,进一步推动我国动物学的前沿领域发展。 相似文献
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以Web of Science数据库(1975-2011年)信息行为主题的1303条文献为数据源,借助CitespaceⅡ软件对相关被引文献数据和主题词等数据进行分析和处理,以知识图谱的方式,对信息行为研究的跨学科属性、核心刊物、高影响力著者及代表性文献、研究热点和前沿进行分析,从而直观地揭示信息行为领域的研究现状和发展趋势。 相似文献
6.
陈晓书 《内蒙古科技与经济》2009,(13):81-84
文章以德温特世界专利创新索引网络数据库为数据源,从多个角度对检索到的碳纳米管专利文献进行分析,阐明了主要专利权人在该技术领域的相关关系、碳纳米管专利的主题关联、专利在世界主要国家的分布等情况。 相似文献
7.
我国石墨烯领域专利信息可视化分析 总被引：1，自引：0，他引：1
以中国国家知识产权局专利数据库为数据源,借助Bibexcel和Pajek等分析工具,采用定量和定性的专利信息分析方法,从技术生命周期、技术主题和合作网络3个角度对我国石墨烯领域的相关专利文献进行可视化分析,揭露我国石墨烯领域存在研发合作强度较弱、研发机构技术优势不明显、研发主体合作意识淡薄3个主要问题,并提出对策建议,今后应加强我国石墨烯领域的政府支持力度和研发投入与研发合作强度。 相似文献
8.
利用专利分析法,分析了我国压铸模具技术领域的相关专利数据,归纳了近年来我国压铸模具技术在申请类别、申请人性质和国别等方面的特点,并对合金压铸模具技术进行了细致分析,绘制了压铸专利技术/功效矩阵表,预测了压铸模具领域的技术的发展趋势。 相似文献
9.
以汤森路透集团的web of science及CNKI数据库为数据源,对截至2011年已发表的SCI论文、中文核心期刊论文中信息科学与图书情报、图书馆科学类别下以“共享”为主题的期刊论文进行全面分析。利用文献计量学的相关分析方法对论文从时间分布、主题分布、期刊分布、主题发展趋势等多个角度探索研究者对共享方面研究的发展历程,分析现状,得出相应结论。 相似文献
10.
本文以incoPat全球专利数据库收录的人工智能领域相关专利为数据源,运用专利计量法对专利数据从时间、地域分布、技术分类等方面进行比较分析,得到人工智能主要发展国家或组织在人工智能领域的发展状态、重点技术发展方向,并对人工智能领域专利成果较多的中美日三国,对不同专利类型利用Ucinet软件进行关键技术分析,比较三个国家在人工智能领域的重点研究方向和产业应用情况,分析国际人工智能领域的发展趋势,再通过对我国国内人工智能领域专利申请人技术分布、地域分布等情况进行分析,发现我国国内人工智能领域技术的现状。 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.
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