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61.
构建基于改进突变级数法的评价模型,研究2009-2017年各省不同所有制高技术企业创新能力差异,采用ARCGIS软件进行可视化分析,运用全面FGLS回归模型探索不同所有制高技术企业创新能力差异生成机理。结果表明:①总体来看,内资企业与港澳台资和外资企业创新能力差距尚存;②省级层面不同所有制高技术企业创新能力呈现差异化状态,整体创新能力较强地区港澳台资和外资企业普遍强于内资企业,而其它地区则恰恰相反;③政府资助和引进高素质人才能够显著提升内资企业创新能力,加强产权保护、提高开放程度对内资、港澳台资和外资企业创新能力均具有积极作用。 相似文献
62.
63.
Hyun-Pyo Kim Yong-Bum Kim Garth Collier Jong-Wook Myung Bong-Youl Cho Young-Gon Kim 《中国科技投资》2007,(10):59-61
移动WiMAX与WiBro之间的关系WiBro源自韩国。早在2004年7月韩国信息通讯部(MIC)正式公布移动WiMAX(WiBro)的服务要求之前,韩国电信技术协会(TTA)内部就开展了一项本地 相似文献
64.
The aim of this article is to investigate differences between the British public and private sectors in terms of the decentralisation of employment relations. Drawing on data from the 1998 Workplace Employee Relations Survey, the article arrives at three main conclusions. First, the analysis reveals that while local‐level managers in both sectors have similar levels of responsibility for employment relations issues, those in the public sector are, on the whole, significantly less likely to be able to exercise authority. Second, the results indicate some marked variations in practice within the public sector, with managers in education having the greatest level of authority. Finally, the article explores the extent to which differences in local‐level authority between the public and private sectors can be explained by higher‐level collective bargaining, and the presence of higher‐level personnel specialists. These factors have only a partial influence, and do not fully explain why local‐level employee relations managers in some areas (notably health) are less able to exercise authority than their counterparts in the private sector. 相似文献
65.
A bstract . Historians interested in 20th century American reform often seek to analyze the ideologies of political leaders separately from the institutions that these same leaders created. Such emphases on ideas, as opposed to actions, has, for example, led "revisionist" American historians to argue that the presidencies of Herbert Hoover and Franklin D. Roosevelt were "conceptually continuous." Our examination of the major social welfare programs undertaken by the federal government in the 1920s disputes this claim. Examination of the operations of the federal bureaucracy instead of the rhetoric of politicians demonstrates the existence of decided policy differences between the Hoover and Roosevelt eras. "Efficiency" analogues dominant during the Hoover era were replaced with "direct service-provider" approaches which created a clear distinction between private and public welfare programs. Elements of "continuity" between the two eras have been overdrawn. Background is provided for increased understanding of some of the policy implications of America's contemporary welfare debate—particularly about "rehabilitation" strategies and/or rationales for action in the social welfare field. 相似文献
66.
智能化立体车库优化车辆存取策略研究 总被引:4,自引:0,他引:4
通过对智能化立体车库的研究,提出了三种可提高车库效率的优化车辆存取策略,即分区存取、交叉存取和自调整策略。 相似文献
67.
Kim C. Border 《Economic Theory》2007,31(1):167-181
This note uses the Theorem of the Alternative to prove new results on the implementability of general, asymmetric auctions,
and to provide simpler proofs of known results for symmetric auctions. The tradeoff is that type spaces are taken to be finite. 相似文献
68.
Technological change in energy systems: Learning curves, logistic curves and input-output coefficients 总被引:1,自引:0,他引:1
Learning curves have recently been widely adopted in climate-economy models to incorporate endogenous change of energy technologies, replacing the conventional assumption of an autonomous energy efficiency improvement. However, there has been little consideration of the credibility of the learning curve. The current trend that many important energy and climate change policy analyses rely on the learning curve means that it is of great importance to critically examine the basis for learning curves. Here, we analyse the use of learning curves in energy technology, usually implemented as a simple power function. We find that the learning curve cannot separate the effects of price and technological change, cannot reflect continuous and qualitative change of both conventional and emerging energy technologies, cannot help to determine the time paths of technological investment, and misses the central role of R&D activity in driving technological change. We argue that a logistic curve of improving performance modified to include R&D activity as a driving variable can better describe the cost reductions in energy technologies. Furthermore, we demonstrate that the top-down Leontief technology can incorporate the bottom-up technologies that improve along either the learning curve or the logistic curve, through changing input-output coefficients. An application to UK wind power illustrates that the logistic curve fits the observed data better and implies greater potential for cost reduction than the learning curve does. 相似文献
69.
近一段时间以来,就中国近期是否应该推出股指期货存在各种说法,有积极倡导尽快推出股指期货的,也有表示怀疑的,那么中国目前究竟应不应该推出这种衍生品呢?本认为从中国今后金融市场的完善和发展来看,是应该尽快发展包括股指期货在内的各种金融衍生品市场,但是从目前的市场状况来看,却没有推出的条件。 相似文献
70.
The purpose of this paper is to analyze strategic behavior of vertically integrated firms when there is downstream entry, taking into account the balance between competition in the market and competition for the market. This analysis can serve to explain diverse distributional structures, including the coexistence of vertically integrated firms and independent retailers. And it shows that the relative efficiency of downstream entrants and the level of competition among incumbents are two major factors in determining equilibrium configuration. 相似文献