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传统的产业竞争研究主要集中在区域产业竞争力这一孤立概念的内涵、来源、评价和相应对策方面,无法精确地刻画产业间实际存在的竞争关系及其强度。探讨产业竞争系统及其构成要素,建立基于资源与市场的双维度产业竞争压力概念模型,提出基于产业间投入产出数据的压力测度方法,在此基础上提出关于区域产业竞争系统的一个普适性的定量分析框架。该框架可以深入到产业系统内部,详细刻画产业竞争网络的拓扑结构、统计特征和竞争特性,预测产业竞争系统的长期演化行为和产业政策效果,为区域产业间竞争系统的结构与演化分析提供理论与方法论支撑。 相似文献
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企业与合作伙伴技术竞争如何影响产品竞争 《科学学研究》2021,39(1):83-92
企业与合作伙伴的多元竞争关系对其战略选择和知识管理具有深远意义。本文以2012-2018年沪深两市医药制造业上市公司作为研究样本,实证研究了企业与合作伙伴技术竞争与产品竞争之间的关系,以及产业环境不确定性和企业技术商业化能力在其中的调节作用。研究结果表明,企业与合作伙伴的技术竞争与产品竞争之间呈倒U型关系,技术竞争强度增加并不必然导致产品竞争强度的增大;产业环境不确定性和企业技术商业化能力显著增强倒U型关系,稳定的产业环境能够缓和企业与合作伙伴在产品市场上的竞争,具有较强技术商业化能力的企业与合作伙伴在产品市场上的竞争更为激烈。 相似文献
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通过产业间R&D溢出效应测算方法的比较,选择投入产出法对产业研发活动的总受益者效应、总贡献者效应和产业间溢出效应加以度量,利用2002年、2005年、2007年的投入产出系数和R&D经费支出统计数据测算了我国制造业间的R&D溢出效应,并对测算结果进行了比较分析,结果表明:从横向对比看,轻纺制造业和资源加工业的产业间受益者效应较为明显,机械电子业对其他产业贡献较大;在时序特征上,各制造业间的溢出效应在不断发生变化,但具有一定稳定性。上述结论有望为政府优化科研经费投向,动态调整科研经费投入结构提供理论依据。 相似文献
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竞争性联盟中关于技术合作效应的实证研究 总被引：3，自引：0，他引：3
对竞争性战略联盟伙伴间技术合作问题进行探讨,运用实证的方法研究存在竞争关系的合作伙伴间的竞争强度、技术距离和过程管理与技术合作效应之间的影响关系.研究得出,竞争强度、技术距离和过程管理对技术合作效应水平具有显著的积极促进作用,而且过程管理的影响程度最大,技术距离次之,竞争强度最小,这对提升我国企业技术水平具有重要的实践意义. 相似文献
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从社会网络特征即网络关系强度入手,构建结构方程模型研究其对产业集群竞争优势的影响关系。实证研究表明,网络关系强度对产业集群竞争优势有显著的正向影响;网络关系强度通过技术创新对产业集群竞争优势产生的影响大于不通过中介变量产生的直接影响;网络关系强度是影响产业集群竞争优势的四个因素中最为重要的因素。因此,网络结构下的产业集群若能通过提高互惠性,扩大合作交流范围和增加接触的机会来加强网络关系强度,将能更好地提升其整体的竞争优势。 相似文献
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用户细分是产业竞争情报理论方法研究的基本问题之一。以风能产业为例,以2011北京国际风能大会暨展览会等为主要研究样本,基于产业展览会参加者群体分析,将产业竞争情报的主要用户细分为设备制造企业、科研机构、投资商、终端用户企业、政府决策管理部门、行业社团、专业服务机构、媒体、研究与教育培训机构9类用户群体,每个具体类别的用户群体又可进一步细分。对产业竞争情报用户细分的研究方法和结果对于理解产业竞争情报与企业竞争情报的相互关系、针对目标细分用户的需求提供高水平竞争情报产品和服务具有参考意义。 相似文献
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网络型产业运营商面临管制约束和日益激烈竞争的双重挑战,但缺乏有针对性竞争战略分析理论框架。本文在综述和评价网络型产业经济学、管制经济学和厂商策略性行为等维度研究思路和不同竞争战略分析理论的基础上,通过集成和创新,提出了一个能够适应网络型产业特性和动态竞争要求的网络型产业运营商竞争战略的理论研究框架。 相似文献
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基于产业技术竞争情报的应用研究 总被引：1，自引：0，他引：1
产业技术竞争情报通过研究某一具体产业的技术竞争环境、技术竞争对手和技术竞争策略为政府宏观经济和科技发展提供决策支撑。技术路线图是国家提倡采用的技术预见工具,作者对产业技术情报的理论进行探索并重点开展了在产业技术路线图中的应用研究,对于应用产业技术情报制定技术路线图,从而进一步发挥情报研究的前瞻性、导向性作用具有十分重要的现实意义。 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
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
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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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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
15.
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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《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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《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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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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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
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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