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1.
网络嵌入能够帮助企业加强协作和管理创新机制,如何发挥网络嵌入的积极作用成为企业提高合作创新绩效的迫切需要。基于社会网络理论视角构建网络嵌入、联盟信任和合作创新绩效三者之间的关系模型,着重研究网络嵌入对合作创新绩效的内在作用机理,并对联盟信任在网络嵌入和合作创新绩效中的中介作用,以及伙伴互动特征(沟通交流和信息共享)对两者关系的调节效应进行分析。以我国207家新创企业作为研究对象的实证研究发现:在我国情境下,企业嵌入于社会网络中能够促进企业成长和提高合作创新绩效,联盟信任在网络嵌入和合作创新绩效中起部分中介作用,伙伴互动特征中的沟通交流在网络嵌入和合作创新绩效的关系中具有显著的正向调节作用。 相似文献
2.
基于社会网络和资源基础理论,从网络嵌入性视角,揭示技术融合对信息技术企业创新绩效的影响,以及合作网络嵌入性在这一过程中所起的调节作用.利用2010—2020年间沪深A股上市的信息技术企业相关数据进行实证研究,结果显示:替代性技术融合和互补性技术融合均对信息技术企业创新绩效具有促进作用,合作网络结构在两者关系中具有调节作用.其中,网络密度和网络中心性正向调节替代性技术融合与信息技术创新绩效之间的关系以及互补性技术融合与信息技术创新绩效之间的关系;而结构洞只正向调节互补性技术融合与信息技术创新绩效之间的关系. 相似文献
3.
军民融合必须嵌入产业网络,架构创新是军民深度融合的重要影响因素。以架构创新为中介变量,以政府创新政策为调节变量,构建了网络嵌入影响军民融合协同创新绩效的概念模型,通过问卷调查并运用结构方程模型展开实证研究。研究发现：网络嵌入对军民融合协同创新绩效提升有显著影响,在这一过程中,组织架构创新和知识架构创新均起到了中介作用,而产业架构创新在网络嵌入与协同创新绩效之间的中介作用未能得到验证;政府的合作促进政策可以减少合作的不稳定性,从而调节网络嵌入和协同创新绩效间的关系,但是由于其削弱了军工企业的“结构洞”位置,因此没有显著调节结构嵌入与协同创新绩效的关系。另外,由于知识产权本身的独占性和排他性特征,导致知识产权保护政策没有像预期中一样对两者的关系起到正向的调节效应。本研究对于指导我国军民融合产业深度协同发展具有一定的借鉴和指导意义。 相似文献
4.
《中国科技论坛》2021,(5)
基于2009—2019年创业板678家上市公司面板数据,结合中国经济区域的分类,实证检验了总样本和分区域样本税收优惠影响企业创新绩效的路径以及营商环境的调节作用。研究结果表明:税收优惠对企业创新绩效具有显著正向影响,研发投入在两者关系中起到部分中介作用;营商环境在税收优惠影响创新绩效的直接路径中的调节作用不显著,在中介效应的前、后半路径中均起正向的调节作用;税收优惠对研发投入和创新绩效的影响具有地区差异性,其中东部地区企业与总样本企业的分析一致,而中部地区企业税收优惠对创新绩效的促进作用不显著,西部地区企业税收优惠对研发投入和创新绩效的促进作用均不显著。本文研究结果对于加大税收优惠力度和优化营商环境,进一步提升企业的创新绩效具有一定的借鉴意义。 相似文献
5.
以创新网络结构—绩效为研究对象,分析结点属性、联系强度及网络中介位置等网络结构要素对创新网络绩效的作用。运用科研合作网络表示创新网络,以燃料电池为研究领域,将1989—2011年间中国学者合作发表在SCI来源期刊上的科技论文作为样本数据,利用UCINET6绘制中国区域科研合作网络图谱并获取网络结构的表征,验证结点属性、联系强度和中介位置等对创新绩效的作用机制及效果。研究结果表明:当分别考察结点属性、联系强度和网络中介位置等网络结构要素对创新绩效的作用时,它们均对创新绩效存在显著的促进作用;考察三者互动效应对创新绩效的作用时,中介位置对创新绩效不存在直接影响,而是借助联系强度间接促进创新绩效的提升。 相似文献
6.
《科学学与科学技术管理》2012,33(1)
以创新网络结构一绩效为研究对象,分析结点属性、联系强度及网络中介位置等网络结构要素对创新网络绩效的作用。运用科研合作网络表示创新网络,以燃料电池为研究领域,将1989--2011年间中国学者合作发表在SCI来源期刊上的科技论文作为样本数据,利用UCINET6绘制中国区域科研合作网络图谱并获取网络结构的表征,验证结点属性、联系强度和中介位置等对创新绩效的作用机制及效果。研究结果表明：当分别考察结点属性、联系强度和网络中介位置等网络结构要素对创新绩效的作用时,它们均对创新绩效存在显著的促进作用;考察三者互动效应对创新绩效的作用时,中介位置对创新绩效不存在直接影响,而是借助联系强度间接促进创新绩效的提升。 相似文献
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8.
本文以四川德阳装备制造业集群为例,从节点度、中介中心度和结构洞三个维度,分析了装备制造业集群的创新网络结构嵌入性对集群企业创新能力增长存在的影响.结果显示:集群企业的结构洞特征对企业创新能力增长存在显著的正向关系,而节点度及其网络中介中心度对企业创新能力的增长不存在正向影响.这说明在德阳装备制造业中,每一个处于“桥”位置的企业能获得更多创新资源,其创新能力增长拥有绝对优势,而配套企业与大企业之间的联系仅仅是低水平的业务合作,缺乏技术、知识、信息等方面的互动和学习,创新资源得不到流动,创新能力得不到提升.本文进而指出了一些提升集群创新网络结构嵌入性对集群内企业创新能力影响的路径. 相似文献
9.
以成都市新都家具制造业集群为例,从节点度、中介中心度和结构洞三个维度,实证分析了传统产业集群创新网络的结构嵌入性对集群企业创新绩效的影响。研究结果显示,企业的节点度及其网络中介中心度对企业创新绩效存在正向影响,而结构洞特征对企业创新绩效不存在显著的正向关系。同时,企业创新绩效是多方面因素综合作用结果,又选择了三家代表性企业,从其网络结构嵌入性、企业实力、领导者创新意识等方面,进一步对比分析了网络结构嵌入与企业内部因素之间的关联。最后,针对集群中存在的不足,给出了具体的完善策略。 相似文献
10.
借鉴国内外学者的相关研究,基于区域科研院所与其他创新主体间的关系,提出了区域创新系统中科研院所创新行为与区域创新绩效间直接和间接影响关系的理论假设。通过问卷调查以及改善结构方程路径分析,科研院所组织外部创新合作和员工创新行为对组织内部创新行为、科技中介合作和企业新产品绩效间关系发挥了积极的中介作用;市场绩效在企业新产品绩效和区域创新绩效间发挥了积极的中介作用;政府行为对科研院所组织外部创新合作、科技中介合作有正向的调节作用,而对员工的创新行为以及市场绩效存在负向调节影响。 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.
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
13.
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
14.
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
15.
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
16.
《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
17.
《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
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