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81.
从理论上来说,波特弱假说涉及双重外部性问题,即大气污染的负外部性和技术创新的正外部性,环境规制和知识产权保护合力才能予以切实彻底解决,而后者并没有得到普遍重视。本文认为,波特弱假说需要考虑知识产权保护强度。以SO_2排放控制技术为例,本文运采用2000-2013年省际省份面板数据,结合固定效应模型进行实证研究检验了知识产权保护对于波特弱假说的作用。结果发现,当知识产权保护较弱时,环境规制对大气科技创新具有呈现负向影响;。只有当知识产权保护较强时力度超过一定阈值时,环境规制才会对大气科技创新产生正向影响,波特弱假说成立。此外,环境规制和知识产权保护影响大气科技创新的交叉效应主要出现在企业,而非科研院所和个人,创新主体存在明显的差异性。 相似文献
82.
The use of university-industry collaboration in the innovation process is viewed as a major driver of firm competitiveness. The organizational dynamics underlying successful external relationships, however, remain poorly understood. Using longitudinal case studies of 15 innovation projects, we examine how firms with varying degrees of experience in collaborating with universities and public research organizations rely on different social capital dimensions to achieve successful collaborations. We find that experienced firms establish external collaborations on the basis of cognitive social capital, but this basis is reinforced by relational social capital over time. Conversely, less experienced firms initially base their university collaborations on relational social capital, which is reinforced by cognitive social capital over time. Based on these findings, we theorize on the interplay of different dimensions of social capital in university-industry collaborations over time. Our study has important implications for the management of collaborative innovation projects. In particular, it provides guidance to enable less experienced firms to develop successful collaborations with university partners. 相似文献
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85.
Patenting and US academic research in the 20th century: The world before and after Bayh-Dole 总被引:2,自引:0,他引:2
Bhaven N. Sampat 《Research Policy》2006,35(6):772-789
The dramatic growth of patenting and licensing of publicly funded research by American research universities in the closing quarter of the 20th century has stimulated some of the highest-profile debates in science and technology policy today. The issue of what aspects of academic research should be public - and what private - lies at the heart of each of these debates. The movement of academic scientists into commercialisation of discoveries and inventions has been extolled by some as a new model of academic research, one which facilitates economic and social returns from universities. At the same time, this trend has been criticised by others as representing a socially inefficient ‘privatisation’ of academic research and as a threat to the ethos of science itself. This paper places these debates in historical context, with a review of changes in American universities’ patenting policies, procedures and practices throughout the 20th century, an assessment of the logic underlying the passage of the Bayh-Dole Act of 1980, and an overview of its effects on economic returns from university research. 相似文献
86.
随着中国城市化的快速发展,家庭部门成为CO2排放的重要增长点.本文在计算2000-2012年30个省(直辖市,自治区,除港,澳,台,西藏外)家庭CO2排放的基础上,构建面板模型分析了城市化对其影响的区域差异.结果表明:①城市化发展促进了30个省(直辖市,自治区)家庭CO2排放的增加,但是区域差异较大.城市化水平对家庭直接CO2排放影响程度高的省份,集中在东部和东北地区,如上海,黑龙江和吉林等;城市化水平对家庭间接CO2排放影响程度高的省份,集中在东部地区,如上海,北京,浙江和广东等;影响程度中等和低的省份主要交错分布在中国中部,西部地区,如宁夏,贵州以及安徽;②进一步从消费支出弹性视角分析了区域差异的原因,发现城市化水平对家庭CO2排放影响越高的区域,其CO2排放的消费支出弹性越高.直接CO2排放的弹性差异主要与汽油,电力消费的增加幅度有关,间接CO2排放的弹性差异主要与来自工业部门的消费支出增加幅度有关.因此,在城市化水平对家庭直接CO2排放影响程度高的区域,重点是发展公共交通并注重日常生活节能;在城市化水平对家庭间接CO2排放影响程度高的区域,重点是提高工业部门的能源使用效率. 相似文献
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88.
This study investigates the effect of project-level collaboration breadth (i.e., the number of collaboration partner types) and collaboration depth (i.e., the intensity of the interactions with these partners) on the incremental and radical innovation performance of innovation projects. The econometric analyses, based on a Community Innovation Study sample of 218 innovation projects conducted in German manufacturing companies, reveal inverted U-shaped relationships between collaboration breadth and radical innovation performance and between collaboration depth and incremental innovation performance. These curvilinear effects speak to the high sensitivity of innovation projects to the extent of collaborative activity, which implies that practitioners should exert caution in managing collaborative innovation projects. This study contributes to the understanding of project-level open innovation and to the overall understanding of the performance effects of innovation collaboration, which, following recent assertions in the literature, could be flawed by analyses conducted at the organizational level. 相似文献
89.
BitTorrent是第四代网络下载技术,是一种多点下载、源码公开的p2p软件,通过构建覆盖网实现协作并发下载.BitTorrent协议是一种公开的P2P协议,分为节点问协议和节点与跟踪器协议. 相似文献
90.
N. Unni C. Sumithra R. Lakshman Lakshmi N. Leela Menon K. N. Subhakumari V. S. Sheejamol 《Indian journal of clinical biochemistry : IJCB》2015,30(2):161-166
PCOS is a heterogeneous endocrine disorder with diverse clinical presentation. Oxidative stress plays a key role in the pathophysiology of this disease. Serumhigh sensitive C-reactive protein (hsCRP), a marker of chronic low grade inflammation, is indicative of future development of cardiovascular disease. Our aim is to evaluate the oxidant status and hsCRP levels in PCOS. The study involved 61 cases and 61 controls in the age group of 18–40 years diagnosed with PCOS. Erythrocyte malondialdehyde (MDA), superoxide dismutase (SOD), serum hsCRP, gonadotrophins, thyroid stimulating hormone, prolactin, glycemic status and lipid profile were estimated. Erythrocyte MDA (p < 0.001), SOD (p = 0.007) and serum hsCRP (p < 0.001) were significantly elevated in PCOS patients than controls. Oxidative stress is present in women with PCOS along with elevated hsCRP. 相似文献