Labor Supply,Migration, and Long-Term Development

This article analyzes the impact of the supply of skilled and unskilled labor on the growth rate of open economies. Using an expansion-in-varieties framework, the model distinguishes between a long-term equilibrium and a medium-term adjustment path. It is demonstrated that the dynamic effects of labor supply are different in a model with expanding varieties in the consumption sector from those in a model with expanding varieties in the production sector. In addition, the outcome depends on the elasticities of substitution in production as well as the countries' production shares in world goods markets. It is shown that, in general, the supply of unskilled labor is likely to have an unfavorable effect on long-term development.     

Optimal fiscal and monetary policy in an economy without capital

This paper is concerned with the structure and time-consistency of optimal fiscal and monetary policy in an economy without capital. In a dynamic context, optimal taxation means distributing tax distortions over time in a welfare-maximizing way. For a barter economy, our main finding is that with debt commitments of sufficiently rich maturity structure, an optimal policy, if one exists, is time-consistent. In a monetary economy, the idea of optimal taxation must be broadened to include an ‘inflation tax’, and we find that time-consistency does not carry over. An optimal ‘inflation tax’ requires commitment by ‘rules’ in a sense that has no counterpart in the dynamic theory of ordinary excise taxes. The reason time-consistency fails in a monetary economy is that nominal assets should, from a welfare-maximizing point of view, always be taxed away via an immediate inflation in a kind of ‘capital levy’. This emerges as a new possibility when money is introduced into an economy without capital.     

选择银行

<正> 投资者可能忽视了银行部门,但银行部门具有的优势正在抵消结构重组和不良贷款引起的诸多问题,众多机遇也开始在出现。银行:存放现金的安全可靠的地方——只要凑巧不是在印尼。大银行:投资者稳定的生财之处——只要凑巧不是在亚洲。果真如此?看来,这些至理名言今年听上去开始有点徒有其名。全球各地利率正在下跌,使存款似乎不怎么吸引人。对投资者而言,局势也在改变:假如全球经济放慢速度,那么贷     

The energy efficiency of local food systems: A comparison between different modes of distribution

The possible contribution of local sales chains to the reduction of energy consumption has been hotly debated in recent years. Some authors establish a link between the reduction of distances traveled by food and lower energy consumption due to transportation, while others hold that local supply chains have a poor energy performance. This article engages this debate by comparing the rates of energy consumption attributable to different modes of distribution of fruits and vegetables in a region of France.