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本文基于金融市场中存在的金融错配现象为现实依据，利用2003-2015年我国民营上市公司微观数据，在测算金融错配指数和外部融资依赖的基础上，采用动态面板模型系统GMM方法，从政治关联的视角对上述命题进行验证.研究结果发现，金融错配显著抑制企业的创新产出，特别是对含金量比较高的发明专利抑制作用更为显著，民营企业的政治关联会对二者之间的关系产生显著的负向调节作用。通过进一步探讨民营企业政治关联活动的调节机制发现，政治关联的调节作用是通过影响企业外部融资约束进而影响金融错配与企业创新产出之间的关系。结论表明，合理配置金融资源、建立良好的政企关系，能够有效缓解企业创新活动的融资约束，对提升企业的创新产出具有重要的现实意义 相似文献
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在融资约束理论框架下,对产融结合、金融发展与企业创新产出三者之间的关系进行了探讨.选取2006—2013年中国制造业上市公司的相关数据资料,研究发现： 产融结合能缓解制造业企业创新活动的融资约束,从而促进制造业企业的创新产出;制造业企业持股非上市金融机构能有效缓解融资约束,促进企业创新,但持股上市金融机构则不存在这种效应;产融结合对企业创新的促进作用在金融欠发达地区作用更加显著.本文从融资约束角度证明了产融结合在提升企业创新产出中的积极作用,对政府制订再工业化计划具有重要的现实意义. 相似文献
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基于控股权性质差异视角,本文首先理论分析金融错配对国有与民营企业技术创新产出及其模式选择的差异性影响,以及政府补贴在缓解金融错配影响企业技术创新时的政策效应;然后再以我国A股市场2012—2019年期间上市企业为样本并基于面板数据模型进行实证检验。研究结果表明：虽然金融错配有助于增加国有企业技术创新产出,但它在降低民营企业创新产出水平的同时,会严重阻碍国有与民营企业原始发明创新能力的提升;政府补贴能有效缓解金融错配对民营企业技术创新产出与原始发明创新能力的不利影响,并对其研发投入产生正向“挤入效应”,但它对国有企业技术创新投入与产出的政策效果均不显著。 相似文献
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金融摩擦导致民营企业技术创新能力不足,成为推进中国式现代化高质量发展突出的金融机制障碍,数字金融的技术优势为有效缓解金融摩擦提供了基础。本文基于修正的BGG模型论证了数字金融发展、金融摩擦和企业技术创新的理论关系,并利用2011—2020年沪深两市A股的民营企业数据,检验数字金融作用于不同类型金融摩擦影响民营企业技术创新投入的作用效果。研究发现(1)数字金融具有减缓金融摩擦促进民营企业技术企业创新投入的作用,其中数字支付和数字信贷的作用尤为显著;(2)机制分析表明,数字金融能够有效降低民营企业技术创新投入中资本错配类和融资成本约束类金融摩擦,但对于融资可得性类金融摩擦不具有缓解作用;(3)数字金融可以靶向校正民营企业技术创新融资中的“领域错配”“阶段错配”和“地区错配”,并对经济不发达地区、规模较小和治理制度完善的民营企业技术创新投入促进作用更强。本文的研究有助于厘清数字金融促进民营企业技术创新的理论机理,为有效化解金融摩擦提升民营企业技术创新能力,提供可靠的经验证据和决策支持。 相似文献
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《中国科技论坛》2020,(8)
本文以2005—2015年中关村国家自主创新示范区企业为样本,研究信贷融资对企业创新产出与财务绩效关系的影响机制,尝试从信贷融资视角打开影响企业创新收益差异性的"黑箱"。研究发现,创新产出对财务绩效具有显著的正U型影响,而信贷融资是二者关系的重要调节变量,存在"双刃剑"效应。一方面,信贷融资的增加使创新产出与财务绩效正U型关系曲线的拐点右移,说明以信贷融资为主导的金融结构在推动创新驱动发展的过程中存在资金错配等问题,加深了企业的"创新陷阱";另一方面,信贷融资显著提升创新产出与财务绩效正U型关系曲线的形态陡峭程度和平均边际效应,说明信贷融资强化了创新产出对财务绩效的影响,并提升了财务绩效的整体水平。因此,深化银行业改革,推动金融与实体经济的深度融合,对培育世界一流企业、建设创新型国家具有极其重要的战略意义。 相似文献
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政治关联作为一种重要的非市场化战略资源,对民营企业创新具有重要影响,但现有研究尚未系统探究微观层面上企业家精神和宏观层面上外部创新压力对二者关系的权变影响。本研究利用2016年全国工商联私营企业调查数据,在实证检验民营企业政治关联与研发投资关系的基础上,进一步从高阶理论出发,探究企业家内在价值观和外部创新压力如何影响二者关系。结果显示民营企业政治关联显著提升企业研发投资倾向和研发投资规模,企业家精神和外部创新压力显著正向调节政治关联与研发投资的关系。这表明政治关联作为市场的互补性战略资源带来的资源效应提高了企业技术创新的积极性,而企业家对政治关联这一非市场化战略资源的运用既是主动减少创新风险的举措,也是主动应对外部创新压力、提升创新能力的重要表现。从企业家决策逻辑和高阶理论视角拓展政治关联与企业创新关系的理论认知,为企业优化创新战略、加快中国企业自主创新提供实践启示。 相似文献
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以2010—2018年沪深A股非金融类上市公司为研究样本,构建投资—现金流敏感性模型及其拓展模型,基于期限错配视角对产融结合缓解融资约束的影响机制进行分析。研究发现产融结合通过抑制期限错配从而达到缓解上市公司融资约束的作用,且高度的产融结合对抑制期限错配缓解融资约束的作用更显著;非国有企业、中小规模企业的产融结合缓解融资约束的作用更显著,并且这种融资约束的缓解在金融欠发达地区作用更显著。为产融结合缓解融资约束的影响路径提供了新的视角。 相似文献
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研究以中部河南、山西等六省高技术产业2008—2014年的样本数据为研究对象,通过构建面板回归模型,研究区域内金融要素错配对高技术产业创新水平的影响。此外,实证部分进一步构建了GMM回归模型,进一步深入探究存在外部融资约束条件下,金融要素错配对高技术产业创新水平的影响。结论表明:金融要素错配与产业创新水平之间存在显著的负向关系。区域经济的外部融资依赖程度越高,金融要素扭曲对高技术产业创新水平的抑制效果越显著。其他解释变量中,企业规模正向促进高技术产业创新水平;盈利能力对高技术创新水平并没有起到重要的影响作用;地区对外开放水平对高技术产业创新水平的影响较大;人力资本水平对高技术产业创新水平的提升有着更为显著的正向影响。提出改善中部六省金融要素错配现状,提升高技术产业创新水平的对策建议。 相似文献
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政治关联是影响中小高新技术企业技术创新的一个非常重要的因素.选取2006年12月31日前在中小板上市的高新技术企业作为样本公司,考察政治关联与技术创新的关系.结果发现,政治关联与技术创新呈显著正相关关系,即政治关联能够对技术创新绩效产生积极影响.进一步检验发现,政治关联对技术创新的积极作用,部分是通过外部融资的便利获取... 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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《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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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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《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