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51.
通过面板数据系统广义矩估计方法,从金融发展、能源消费与经济增长的角度对我国1985~2011年省份进行的实证分析发现,整体而言,金融发展、能源消费与经济增长之间存在显著正相关关系;按照东、中、西部三个地区分类估计得出,区域金融发展、能源消费对经济增长的作用效果存在显著的区域差异性:金融发展对经济增长的作用效果存在自东向西逐次递减的现象,而能源消费对东部地区经济增长的作用效果最大,西部居中,中部最小。  相似文献   
52.
近年来,资源问题和产业集群问题逐步成为经济研究的热点,而作为资源产业特殊组织形式的资源型产业集群也受到了越来越多的关注。资源型产业集群的系统动力机制应该从系统动力学角度,对机制的结构、功能和原理进行研究。文章在探讨资源产业集群系统动力要素的基础上,分析了资源型产业集群的主体、资源和环境三大系统动力结构以及动力功能,提出了资源产业集群动力系统的成本效率机制、协同竞争机制、学习创新机制和支持保障机制四大作用机理。  相似文献   
53.
Can economically efficient outcomes be obtained and sustained in the absence of externally enforced property rights? We study the evolutionary properties of a game that exhibits two well-defined Nash equilibria: one generates an inefficient outcome while the other set generates an efficient outcome supported by the potential for retaliation. Although standard forward-looking refinements eliminate the efficient equilibrium, neither equilibrium type satisfies strict evolutionary stability criteria. However, both types of equilibrium define strategies that are neutrally stable, which makes them vulnerable to drift in dynamic environments. We conduct computer simulation experiments in which players learn adaptively via a tournament selection mechanism called sophisticated experimentation. Our simulations demonstrate that while the system spends a disproportionately high proportion of time in the inefficient equilibrium set, the efficient equilibrium is pervasive as the system drifts back and forth between the equilibrium sets, never settling on one or the other.  相似文献   
54.
辽宁产业集群发展与近域城市整合的互动机制   总被引:8,自引:0,他引:8  
马廷玉  邬冰  刘志虹 《经济地理》2008,28(4):623-626
十一五期间,辽宁产业集群和近域城市整合都进入了高速发展状态,融合二者的发展机理,使其产生互动效应是当前关注的问题.文章分析了产业集群和近域城市整合的内部促进作用和外部支撑作用,结合辽宁产业集群和近域城市整合的实际状况,提出集群整合模式中市场力的因素与近域城市同构矛盾等措施是解决问题的关键.  相似文献   
55.
A static computable general equilibrium model of South Africa is adapted to compare new taxes on water demand by two industries, namely forestry, and irrigated field crops. Comparisons are made with respect to both the short and the long run, in terms of three target variables, namely (i) the environment; (ii) the economy; and (iii) equity. Since the taxes on the two industries do not raise the same amount of revenue, the target variables are calculated per unit of real government revenue raised by the new taxes (also referred to as the marginal excess burdens of the taxes). The model results are robust for moderate values of the water elasticity of demand in the two industries, in both the long and the short run. The tax on irrigated field crops performs better in terms of all three the target variables in the short run. In the long run the tax on irrigated filed crops is better in terms of water saving, but reduces real GDP and the consumption by poor households.  相似文献   
56.
    
This paper investigates whether the existence of knowledge spillovers and the capacity of firms to assimilate them, which we relate with R&D intensity and some human resource management practices, are associated with the decision to innovate of Spanish firms. In order to do this, we employ data from the ‘Central de Balances’ database, which covers both manufacturing and services firms during the period 2003–2007, and use an estimator proposed by Wooldridge [2005. Simple solutions to the initial conditions problem in dynamic nonlinear panel data models with unobserved heterogeneity. Journal of Applied Econometrics 20, no. 1: 39–54] for dynamic random effects discrete choice models. The empirical exercise provides evidence on the positive link between spillovers and the innovative behaviour of companies, not just for the knowledge generated in the same industry, but also for that generated in the same region or by the public sector. Moreover, this link is stronger for those firms with a higher capacity to absorb those spillovers. This ability not only works through firms’ R&D capabilities, but also through factors such as the quality of the labour force, the share of temporary employment and the amount of resources spent in training. In addition to these factors, we find that innovation performance exhibits a high degree of inertia. Further, some other observed firm characteristics, such as size, sales growth, export behaviour, sector capital intensity or financial structure variables, are also found to be relevant determinants of the likelihood of innovation.  相似文献   
57.
The harmful effects on human health or ecosystems of many toxic substances depend on their cumulative concentration in the carrying medium (water, soil, or air), not just on the annual deposition rates of the substances. Accumulative toxic substances pose challenges to regulatory policy that are not faced when controlling pollutants whose damaging effects are though to depend primarily on annual emission flows. An increasingly common response is to phase out offending uses or production of the substance. In this paper we take as given the goal of phasing out an accumulative pollutant and examine different ways this could be done using a simple, partial-equilibrium dynamic model. We focus on phaseout measures in which the cumulative production and release of the offending substance over the transition period is fixed. Once this cumulative volume is reached, users must convert to a known but higher-cost substitute that is assumed to be benign. The key to the analysis is the observation that the quota on cumulative production makes production of the toxic substance during the transition analogous to extraction of an exhaustible resource with a higher-cost, nonexhaustible ‘backstop’ technology. Using this framework, we first describe the cost-effective outcome when the ‘sunset’ date is chosen to maximize product market surplus subject to the cumulative production constraint. This outcome is compared to one in which the regulator fixes the sunset date, and one in which the regulator limits annual production as well as cumulative production out of concern for acute exposure effects. Finally, we discuss the kinds of market-based policy instruments that would be appropriate for supporting a cost-effective outcome.  相似文献   
58.
    
This article presents the outcomes of an evaluation of the impact of the series of mergers of the local exchange companies that have taken place between 1988 and 2001 on an important measure of performance of the firms undergoing the mergers. The analysis reveals that after firms have undertaken one merger they experience little or no growth after such mergers, but the impact of second mergers on firm growth have been negative. If an important motive in undertaking mergers has been to enhance firm growth, then the merger waves that have been approved and consummated have led to performance declines. The impacts of the merger wave on the growth of the telecommunications sector firms have been negative.  相似文献   
59.
20世纪90年代以来中国经济的动态效率   总被引:52,自引:5,他引:52  
本文借助于西方宏观经济学中的索洛经济增长模型和拉姆齐 卡斯 库普曼斯模型 ,讨论了宏观经济中最优消费和储蓄的确定机制 ,并得出判断宏观经济运行动态效率的黄金定律以及修正黄金定律标准。同时 ,借助代际交叠模型从理论上探讨了自由竞争经济出现动态无效的可能性。在此基础上 ,我们利用黄金定律规则对中国实际经济运行的动态效率进行了考察 ,认为 2 0世纪 90年代初起中国经济运行处于一种动态无效状态 ,进而我们深入分析了造成中国经济出现动态无效的原因。根据中国经济处于动态无效的事实 ,并结合原因探索 ,我们最后提出了摆脱动态无效困境的若干政策建议。  相似文献   
60.
企业边界:基于动态效率的分析   总被引:5,自引:0,他引:5  
周清杰 《财经科学》2006,(10):40-46
企业边界是企业理论关注的一个焦点,不同的理论分支对之有不一样的见解.本文在批判了新制度经济学中用边际交易成本解释企业边界论的基础上,从企业的知识、能力出发,按照动态效率标准对企业边界提出了自己的看法,即企业依据自身情况制定的发展战略是影响企业边界的重要因素.  相似文献   
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