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INTRODUCTION Fenton process has been well studied recently for its prospective applications in unmanageable wastewater treatment (Legrini et al., 1993; Ollis and Al-Ekabi, 1993; Prousek, 1996). The high effi-ciency of this process is traditionally thought to be due to the generation of hydroxyl radical (HO?, which is of a high oxidation potential (E0 = 2.80 V) and can mineralize the organic compounds com-pletely to water and carbon dioxide. In acidic me-dium, this radical mechanism ca… 相似文献
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创造性破坏过程在引发技术发展的不连续性后，既有企业成为最大的受害者。为什么既有企业在资源和能力上优于新进入企业，却不能率先开发突破性创新？如何从组织自身出发改善这种情况？从公司创业机制的角度对这些问题进行了回答。 相似文献
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We develop a valid definition of technological radicalness which states that a successful radical invention is: (1) novel; (2) unique; and (3) has an impact on future technology. The first two criteria allow us to identify potentially radical inventions ex ante market introduction; adding the third condition, we can ex post determine if an invention served as an important change agent. Empirically testable condition selected 6 of 581 tennis racket patents granted between 1971 and 2001. Two of the identified patents - the oversized and the wide-body rackets - are considered radical inventions by industry experts. Applying our definition and operationalization would allow researchers to achieve greater generalizability across studies, avoid endogenous definitions of radicalness, and study predictors of market success for radical inventions. 相似文献
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学界关于变革型领导下属创造力之间的关系尚未达成一致,负相关、不相关、正相关的观点均存在。为深入理解二者关系,基于社会认知理论,引入创新自我效能作为中介机制,将成就导向作为边界条件,构建被调节的中介模型。以某汽车企业341名员工及其领导为研究对象,运用多元回归和Bootstrap法进行假设检验。研究结果表明,①智力激发仅与突破性创造力正相关,鼓舞性激励仅与渐进性创造力正相关,理想化影响力、个性化关怀均与突破性创造力、渐进性创造力正相关;②创新自我效能中介①中所有正相关关系;③成就导向调节创新自我效能与突破性创造力、渐进性创造力之间的正相关关系;④成就导向调节②中所有中介关系。 相似文献
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The technological origins of radical inventions 总被引：3，自引：0，他引：3
This paper aims to trace down the origins of radical inventions. In spite of many theoretical discussions on the effect of radical inventions, the specific nature of radical inventions has received much less attention in the theoretical and empirical literature. We try to fill that void by an empirical investigation into the specific origins of radical inventions. We explore this issue by a close examination of 157 individual patents, which are selected from a pool of more than 300,000 patents. In contrast to the conventional wisdom that radical inventions are based less on existing knowledge, we find that they are to a higher degree based on existing knowledge than non-radical inventions. A further result that follows from our analysis is that radical inventions are induced by the recombination over more knowledge domains. The combination of knowledge from domains that might usually not be connected seems to deliver more radical inventions. 相似文献
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Christian Sternitzke 《Research Policy》2010,39(6):810-821
This paper investigates different types of innovations (from radical to incremental) in the pharmaceutical industry by studying bibliometric data of drugs approved by the United States Food and Drug Administration (FDA), looking at time-to-market aspects, knowledge sources of these innovations, and protection strategies. Scientific knowledge stemming from the public sector is found to be important for all innovations. Nevertheless, radical innovations build on a higher degree on basic research, and they build on a significantly higher share of own prior scientific research than do incremental innovations. Furthermore, each drug is shown to be accompanied by, on average, about 19 journal publications and 23 additional patents. Additional patent filings peak when the commercialization of the drug is in reach. Firms do not differ among the various types of innovations regarding the amount of additional patent filings, but rather with the speed of filing these patents. Finally, this work contributes to the improvement of future econometric analyses that aim to link bibliometric indicators such as patent or publication counts to firm success. 相似文献
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任艳丽 《鞍山师范学院学报》1999,(1)
进一步讨论拟零化根 NQ ,证明了 NQ 是 Amitsur- Kurosh根 ,得到了 NQ -半单环的结构定理 ,给出了 NQ -根的模刻划 . 相似文献
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运动与营养对自由基代谢的影响 总被引：1，自引：0，他引：1
本文综述了运动和营养对自由基代谢的影响.运动可使自由基的产生增多,运动训练和营养补充能提高机体清除自由基的能力,减少脂质过氧化,增强抗氧化酶的活力及提高运动耐力. 相似文献