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激发、增强学生的学习动机有助于提高课堂教学的效果.源于知识本身的认知内驱力在课堂学习中是一种最重要、最稳定的动机,激发好学生的认知内驱力对学习起着十分积极的作用. 相似文献
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旨在加强了解用户知识付费行为,特别是用户为何从免费知识检索行为到知识付费行为的转移意愿.选择推拉锚定模型为研究框架,引入感知信息质量、信任、惯性(包括情感、行为和认知惯性)、信息-任务匹配、信息过载、转移意愿和付费行为7个研究变量,利用结构方程模型研究影响用户从知识免费检索向付费行为转移意愿的因素和各因素之间的关系,以及转移意愿与实际付费行为之间的关系.研究结果显示,对于用户的知识付费行为转移意愿,拉力因素(感知信息质量、信任)和推力因素(信息-任务匹配、信息过载)具有显著正向影响,而惯性具有显著负向影响.基于研究结论,为知识提供者和付费平台提高知识服务水平和改善发展策略提出相关建议如下:重视知识内容输出并确保不断产出新内容,增强用户的感知信息质量;充分考虑惯性因素,努力打造特色知识服务和差异化的精准服务;尽可能提供高信息-任务匹配使用体验并过滤无效信息等. 相似文献
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作为知识转移的重要研究方向之一,个人知识组织化开始受到越来越多的学者们青睐,信任也被普遍认为是知识转移的关键影响因素.信任有其不同的层面与类型,将信任划分为认知信任、情感信任与制度信任三个维度,并分别从各个维度去分析其对个人知识组织化的影响及促进机制,以对知识管理的深入实践提供借鉴. 相似文献
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业务转型企业内部隐性知识转移过程及特征 总被引：2，自引：0，他引：2
依据隐性知识的形成特点,研究了业务转型企业内部隐性知识转移过程及特征,研究表明企业利用栽体识别原有业务知识;在此基础上,通过构建知识库实现知识挖掘,而有效的激励和人员转移是实现伪隐性知识和真隐性知识转移的有效途径.在隐性知识转移初期,企业通过有效的激励实现伪隐性知识转移.其效率呈对数增长趋势;当隐性知识转移至一定阶段后,转移方式发生变化,企业则利用人员转移推动真隐性知识转移,其效率呈稳定状态. 相似文献
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作为产品研发设计的发展趋势,设计链能有效整合跨企业间的研发设计资源,提高市场竞争力.分析了设计知识的特征,研究了设计链知识转移特征,考虑到设计知识的流动存在于有边界的设计链网络之中,基于社会网络的设计链知识转移研究是较为理想的研究渠道.研究了封闭性网络结构和开放式网络结构对设计链知识转移的影响.从连接关系强弱、密度和分布状况三个方面研究了网络连接关系对设计链知识转移的影响.最后,给出了知识转移视角下的设计链构建策略. 相似文献
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知识转移行为对技术联盟影响的微观机理研究 总被引：1，自引：0，他引：1
随着人们对技术与企业贡献的关注,企业技术联盟的研究成为国内外学者研究的焦点.迄今为止,关于技术联盟的理论较多,但针对知识转移行为对技术联盟影响的系统性研究却非常有限.通过对企业知识转移行为内涵的分析,试图从知识转移行为的三要素对企业技术联盟形成与发展影响的微观机理来探讨企业提升其技术联盟能力的途径. 相似文献
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供应链协同的知识转移研究 总被引：4，自引：1，他引：3
知识转移是供应链实施知识管理的关键.知识交换行为的基础是信任,从信任的视角,针时供应链知识转移的方式,就不同的知识特性探讨了相应的知识转移动力机制,据此,分析了供应链网络结构与相应的知识转移动力机制的关系.其结论对于供应链上企业部分地解决知识转移的"无意识困境",进而有效地进行知识转移具有重要的实践意义. 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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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):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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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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《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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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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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