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利用中国按省份、年份划分的面板数据和计量分析方法，研究人力资本、国外R＆D溢出对高技术产业聚集的影响。结果显示，人力资本存量和研发能力及外资的技术溢出效应是影响高技术产业聚集的重要因素。基于以上的分析，我国应进一步强化和优化人力资本、R＆D投资和吸引外资的策略，增强高技术产业的聚集效应。 相似文献
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利用中国按省份、年份划分的面板数据和计量分析方法,研究人力资本、国外R&D溢出对高技术产业聚集的影响.结果显示,人力资本存量和研发能力及外资的技术溢出效应是影响高技术产业聚集的重要因素.基于以上的分析,我国应进一步强化和优化人力资本、R&D投资和吸引外资的策略,增强高技术产业的聚集效应. 相似文献
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基于2007-2014年中国高技术产业面板数据,本文研究了政府支持与研发效率之间的关系。结果显示,从总体上看,政府支持有利于促进高技术产业研发效率的提高,并且这种促进作用主要是通过提升技术效率来实现的;分地区比较表明,政府支持对高技术产业研发效率的影响存在明显的地区差异：东部地区政府支持对高技术产业研发效率没有显著的促进效应,而中西部地区政府支持则显著促进了高技术产业研发效率的提升,且主要也是通过提升技术效率来实现的。不论是采用静态面板数据模型,还是采用动态面板数据模型进行实证分析,上述结果均成立。基于上述研究结论,本文得出了促进中国高技术产业研发效率提升的相关政策启示。 相似文献
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高技术产业集聚在提升区域创新效率的进程中扮演着重要角色,现阶段对于高技术产业集聚与区域创新之间关系研究方面大多忽视空间、时间因素。基于2005—2016年中国省际空间面板数据,采用空间误差和空间杜宾模型,实证分析了高技术产业集聚对区域创新效率的影响。研究发现:我国高技术产业空间集聚明显,地区间差异较大,高技术产业集聚与区域创新效率间存在明显的空间相关性,高技术产业集聚能有效促进区域创新效率的提升。人力资本、对外开放能有效提高区域创新效率。 相似文献
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技术转移方式、自主研发与高技术产业技术效率的关系研究 总被引：1，自引：0，他引：1
运用随机前沿生产函数模型分析国外技术引进、国内技术购买和外商直接投资在提升高技术产业技术效率中的作用,并在统一框架下进一步探讨这三种技术转移方式与自主研发的相互作用及其对技术效率的影响.研究结果表明,国外技术引进、外商直接投资和自主研发显著促进了高技术产业技术效率的提升,但国内技术购买对技术效率的影响并不显著;国外技术引进和国内技术购买都对自主研发产生了替代效应,但也可以通过技术溢出提高技术效率;外商直接投资和自主研发具有互补效应,对技术效率产生显著的正向影响;中国高技术产业技术效率有着显著的地区差异,东部地区技术效率远高于中、西部地区,但东部地区各省之间也存在着显著差异.高技术产业技术效率有较大的提升空间. 相似文献
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研发投入的效率对于高技术产业的发展具有重要的意义。利用1996-2007年中国高技术产业的面板数据,估算了中国高技术产业研发投入对于高技术产业发展的作用。实证结果表明,中国高技术产业的研发投入具有较高的研发投入产出弹性,对高技术产业的发展起到了不可或缺的推动作用。中国高技术产业的细分子行业的研发投入的产出弹性存在差别,但是各行业的研发投入都具有推动高技术产业发展的促进功能。 相似文献
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本文主要研究高技术产业发展对区域产业结构升级的影响。首先,利用变异系数法测算了2005～2016年我国26个省市自治区高技术产业发展水平。然后,通过构建VEC模型进行分析判断高技术产业发展与区域产业结构升级之间内在关系。最后,在此基础上,建立省际面板数据分析模型,从全国及东、中、西部区域层面进行实证分析高技术产业发展对产业结构升级的影响。研究表明：(1)全国及东部、中部区域的高技术产业发展对产业结构升级具有显著推动作用,而西部地区却呈现显著抑制作用;(2)人力资本对西部区域产业结构升级的效应显著为正,而外商直接投资、城镇化对其呈现抑制作用;(3)技术进步对中部区域产业结构升级抑制作用显著,对东部地区呈现不显著的促进作用。因此,需要不断完善高技术产业发展需求的政策体系;强化高技术产业在区域经济发展中的引领地位;完善高技术产业发展的激励机制和市场化机制;因地制宜实施政策促进高技术产业协同发展,实现产业结构升级。 相似文献
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通过对高技术产业地理分布的分析和泰尔指数的测算,发现1997—2010年中国高技术产业集聚呈现先上升后下降的态势。利用面板数据的实证研究发现:新经济地理理论中的规模经济、交通便利度和人力资本因素均对中国高技术产业的区域集聚产生显著影响,其中交通便利度对产业集聚的影响呈倒"U"型,人力资本对高技术产业的促进作用需要一个消化和吸收的过程;技术溢出和外商直接投资也是影响行业集聚的重要因素,前者表现出负的外部性,后者则产生较为显著的正向影响;新经济地理因素对不同区域高技术产业集聚的影响有着明显差异。 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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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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《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
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Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels 总被引：1，自引：0，他引：1
《中国科学院院刊(英文版)》2014,(3):267-268
<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese 相似文献
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WANG Sijia 《中国科学院院刊(英文版)》2014,(2):192-194
<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages. 相似文献