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【目的/意义】近年来,国内外学者基于不同的理论研究了虚拟社区知识共享的影响因素,未见有综述从理
论视角对本领域研究采用的理论及其变量的研究结论展开系统论述。【方法/过程】采用文献调研法对现有虚拟社
区知识共享的实证研究进行详细梳理,总结出本领域研究采用的四个代表性理论,并就这四个理论详细分析了目
前关于虚拟社区知识共享研究已取得的成果,系统梳理了四个理论下各变量的影响作用。【结果/结论】构建了基于
理论视角的虚拟社区知识共享综合实证研究模型,总结得到现有研究的不足以及未来虚拟社区知识共享研究的可
能方向。 相似文献
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在分析了现有虚拟社区研究综述的不足,明确了使用同被引方法揭示虚拟社区已有文献内部关系的理论与实践价值的基础上,本文利用SSCI数据库20年间(1991-2010)虚拟社区研究文献的被引数据,建立了年相对被引频次最高的30篇文献的引文数据库,运用社会网络分析软件Ucinet对同被引矩阵进行了社会网络分析。分析结果很好地呈现了虚拟社区研究的主要主题领域、主题领域内的活跃文献、主题领域间的关系和各主题领域的发展趋势。 相似文献
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虚拟社区为用户的知识共享提供了巨大的便利。通过对国内外关于虚拟社区知识共享的现有研究成果予以系统分析,发现被用于虚拟社区知识共享研究的主要理论有社会认知理论、社会资本理论、计划行为理论、动机理论和信任理论等;影响虚拟社区用户知识共享的因素主要包括动机、自我效能、结果期望和态度等个人因素以及信任、互惠规范、社会认同等社会性因素。 相似文献
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[目的/意义]旨在为提高虚拟社区在应急管理中的作用提供参考。[方法/过程]以Web of Science为数据源,通过关键词搜索获取近五年的相关文献,利用VOSviewer进行关键词共现分析,结合内容分析对国际上虚拟社区在应急管理中的应用研究热点内容进行梳理,并进行总结和展望。[结果/结论]该主题领域的研究具有较强的学科综合性,虚拟社区内容挖掘技术与方法的研究、危机信息交流行为、融合了虚拟社区的系统理论框架构建与系统平台开发研究是目前学者关注的重点。 相似文献
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随着虚拟社区逐渐成为人们进行信息交流和知识共享的新平台,关于虚拟社区中知识共享的影响因素和作用机制的研究也逐步展开。学者们从社会心理学、社会网络分析等理论视角构建研究模型,分析各自框架内的影响因素,但由于研究目的的不同,涉及到的影响因素也各不相同。本文通过总结以往学者的研究结论,分析促进知识共享的"场"的特征,构建虚拟社区知识共享的知识链模型,旨在提出一个较为完整的虚拟社区知识共享影响因素研究框架,为今后的研究提供一点参考。 相似文献
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本文采用文献计量学的方法,选择中国知网(CNKI)中国知识资源总库的相关数据库作为检索数据来源,2001-2010年10年间关于虚拟社区知识共享的研究论文作为分析数据,同时结合文献内容从文献总体、文献增长情况、空间分布、著者分布情况、研究热点、文献引用情况等角度分析我国关于虚拟社区知识共享的研究状况,总结虚拟社区知识共享研究的趋势和特点,希望对虚拟社区知识共享的深入研究提供一些借鉴与指导。 相似文献
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用户间知识共享对虚拟社区的发展具有重要意义,社会网络分析理论与方法（SNA）是近年来热门的研究方法,文章旨在分析SNA在虚拟社区知识共享研究中的应用原理与视角。文章通过详细地分析SNA的适用范围和虚拟社区研究环境特点,论述了SNA在虚拟社区知识共享研究中具有内在的适合性。文献研究和实证研究的结论表明,SNA在虚拟社区知识共享研究中的应用视角具有可行性和科学性。 相似文献
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通过对学术虚拟社区知识交流的研究进行梳理,发现现有研究主要集中在"学术虚拟社区知识交流的影响因素研究"、"学术虚拟社区知识交流的评价研究"和"学术虚拟社区知识交流的提升策略研究"3个方面。研究发现现有研究存在"学术虚拟社区成员类型对学术虚拟社区知识交流的影响研究较少","一阶段数据包络分析方法评价学术虚拟社区知识交流,未考虑环境变量和误差的影响"等问题。"进一步探索成员类型对学术虚拟社区知识交流可能产生的影响",以及"采集纵向数据研究在学术虚拟社区的不同发展阶段应该采用怎样提升其知识交流效果的策略"等是未来可关注的领域。 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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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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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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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
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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
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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
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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)》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