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541.
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543.
Robin Boadway Katherine Cuff Nicolas Marceau 《International Tax and Public Finance》2004,11(5):623-645
A two-region economy consists of a given but different number of immobile workers in each region, and a given number of mobile firms. Firms create jobs where they locate, but there is frictional unemployment. Two sorts of agglomeration effects arise: those from economies of scale in matching, and those from production economies external to the firm. Regions may either be part of a unitary state in which case all regional policies are decided by the central government, or they may be part of a federal state in which case some policies are determined by the regional governments. We characterize the resource allocations in both a unitary and a federal state, and identify the set of instruments that are required to replicate the social optimum in each state. 相似文献
544.
545.
We examine the determinants of occupational earnings of UK 1993 graduates and focus on the influence of the type of school the graduate attended prior to university entrance. For data reasons, we restrict attention to graduates who attended school in England. We estimate that, on average, a male (female) graduate who attended an Independent school receives an earnings premium of 3.1 per cent (3.4 per cent) over and above the earnings of a graduate who attended an LEA school, ceteris paribus . We also find considerable variation across different Independent schools in the size of the graduate earnings premium, especially for males, and show that in the case of males the premium increases with the level of school fees, but is not statistically related to measures of school–level average academic performance. 相似文献
546.
547.
Structural holes, innovation and the distribution of ideas 总被引:1,自引:0,他引:1
We model knowledge diffusion in a population of agents situated on a network, interacting only over direct ties. Some agents
are by nature traders, others are by nature “givers”: traders demand a quid pro quo for information transfer; givers do not.
We are interested in efficiency of diffusion and explore the interplay between the structure of the population (proportion
of traders), the network structure (clustering, path length and degree distribution), and the scarcity of knowledge. We find
that at the global level, trading (as opposed to giving) reduces efficiency. At the individual level, highly connected agents
do well when knowledge is scarce, agents in clustered neighbourhoods do well when it is abundant. The latter finding is connected
to the debate on structural holes and social capital. 相似文献
548.
David H. Good M. Ishaq Nadiri Lars-Hendrik Röller Robin C. Sickles 《Journal of Productivity Analysis》1993,4(1-2):115-125
In this paper we carry out technical efficiency and productivity growth comparisons among the four largest European carriers and eight of their American counterparts. The time period of our comparisons is 1976 through 1986. This is a particularly interesting period since it begins just after the informal steps toward deregulation in the United States and ends just prior to the introduction of the first wave of reforms by the Council of Ministers in Europe. We also identify the potential efficiency gains of the European liberalization by comparing efficiency differences between the two carrier groups. The reductions in inefficiency describe the amount that inputs can be decreased without altering output. 相似文献
549.
Sickles Robin C. Good David H. Getachew Lullit 《Journal of Productivity Analysis》2002,17(1-2):133-155
In this paper we examine the productive performance of a group of three East European carriers and compare it to thirteen of their West European competitors during the period 1977–1990. We first model the multiple output/multiple input technology with a stochastic distance frontier using recently developed semiparametric efficient methods. The endogeneity of multiple outputs is addressed in part by introducing multivariate kernel estimators for the joint distribution of the multiple outputs and potentially correlated firm random effects. We augment estimates from our semiparametric stochastic distance function with nonparametric distance function methods, using linear programming techniques, as well as with extended decomposition methods, based on the Malmquist index number. Both semi- and nonparametric methods indicate significant slack in resource utilization in the East European carriers relative to their Western counterparts, and limited convergence in efficiency or technical change between them. The implications are rather stark for the long run viability of the East European carriers in our sample. 相似文献
550.
Patents encourage firms to undertake research and development by protecting innovator revenues from competition. Controls on pollution of the environment are intended to close the gap between the private and social costs of natural resource use. This paper examines the incentives that are created by the interaction of these two separate pieces of regulation. A model is developed that shows how an incumbent, patent-holding firm can take advantage of environmental regulation to exclude rivals from her market. 相似文献