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[目的/意义]虚拟社区已成为大众知识共享的主要渠道,识别与分析互联网环境下虚拟社区知识共享的关键影响因素,对科学评价虚拟社区知识共享效果,促进网络用户信息资源开发利用具有重要意义。[方法/过程]通过文献研究法,构建了基于在线用户、知识属性、虚拟社区平台、知识共享情境4个维度下虚拟社区知识共享影响的指标体系;在专家打分的基础上,运用DEMEATEL方法分析因素间的因果关系,根据影响因素的中心度和原因度构建并分析因素关系网络图;最后,利用DANP方法确定各指标因素的权重。[结果/结论]识别出知识效用、用户共享意愿、知识质量、信任与认知距离、共享氛围是影响虚拟社区知识共享的关键因素。 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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[目的/意义]从用户感知视角，探究学术虚拟社区知识共享的关键影响因素，有助于推动虚拟环境下的知识分享行为。[方法/过程]基于UTAUT模型，构建了一个包含绩效期望、努力期望、社会影响、便利条件和感知知识优势的综合效应模型，基于352份有效问卷，运用结构方程模型和回归分析进行了实证检验。[结果/结论]绩效期望、努力期望、社会影响正向影响知识共享意愿，并进而影响共享行为；便利条件正向影响知识共享行为；除自我身份与共享意愿之间的调节作用不显著外，感知知识优势调节各变量与知识共享意愿、共享行为之间的关系。提升知识分享的绩效预期和努力期望，增强社区成员的归属感、自我身份认同和自我效能感以及保持成员间适度的知识势差有助于提升虚拟社区知识共享行为。 相似文献
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知识共享是一种使知识价值最大化的途径,最终能为处于知识经济大潮下的现代企业提高企业核心能力。若能够通过分享机制,将企业内部员工所拥有的知识、经验与其他员工进行分享,便有利于提升企业的核心价值。通过对虚拟社区知识共享要素的研究提出完善企业员工培训的建议,试图提出对企业培训虚拟社区的构想和完善。从利他主义、信任关系、个人结果预期等虚拟社区知识共享要素对于社区成员知识分享意愿的影响,提出相应的企业内部虚拟社区培训模块功能修改。基于企业组织文化、部门绩效、团队规范等因素,企业或者员工在虚拟社区中,通过知识共享的学习与交流,解决问题,完善工作,实现知识创新,优化对企业内员工的培训模式。 相似文献
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本文采用综合视角从个人(自我效能、个人结果预期)、情境(互惠规范、信任)、知识(知识质量、知识增长)、成员行为(知识贡献行为、知识搜寻行为、知识利用、社区忠诚度)四个维度构建虚拟知识社区知识共享影响因素模型.并运用结构方程模型,对虚拟知识社区中促进用户知识共享行为的关键因素以及知识共享行为对虚拟社区成员的社区忠诚度产生的影响进行实证研究. 相似文献
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网络虚拟社区的发展依赖于社区知识共享的程度,通过博弈模型的构建与分析发现,不完全信息、有限重复、初始策略选择不共享都会导致虚拟社区知识共享陷入困局。但是,在时期界限变为无限大,即社区成员对通过社区获取知识产生依赖时,可能会出现新的均衡,形成虚拟社区知识共享无限重复博弈,导入激励机制及提高社区知识总量可以使这种可能性成为现实。 相似文献
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虚拟社区知识共享的动因分析——基于嵌入性理论的分析模型 总被引：1，自引：0，他引：1
以嵌入性理论为基础,构建了“认知-关系-文化嵌入性”的概念模型,从认知、关系和文化3个方面分析虚拟社区知识共享的动因,认为认知嵌入性、关系嵌入性和文化嵌入性有助于社区认同的建立,社区认同会促使个体分享自己的知识;关系嵌入性有助于信任的产生,信任会直接影响到个体的知识共享行为;文化嵌入性会直接影响到个体的知识共享行为;3种嵌入性之间相互作用,影响到虚拟社区中个体的知识分享行为。将嵌入性理论引入到虚拟社区知识共享的研究中,有助于更好地理解这种行为背后的动因．促进虚拟社区的发展和知识管理理论的深化。 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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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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《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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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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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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Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献