浙江省城乡统筹与经济发展关系实证研究

目前,浙江省经济发展水平不断提升,而城乡统筹状况却随经济发展而逐步恶化,城乡差距不断扩大。根据脉冲响应分析,城乡统筹水平在受到经济发展水平的一个标准差冲击之后,水平值下降,并逐年增大,说明经济发展在一定时期内会加剧城乡差距的扩大;经济发展水平在受到城乡统筹水平的一个标准差的冲击后,冲击效应为负,说明城乡差距扩大反过来会阻碍经济的发展;因此,两者之间虽然发展趋势相反,但存在互动的关系。     

Why Do Some Households Save So Little? A Rational Explanation

This paper offers an explanation for the puzzle of low wealth holdings among a significant fraction of the elderly. Instead of invoking irrational, nonrational, or nonoptimal behavior to resolve the puzzle, it is shown that widespread low wealth holdings are consistent with a rational life-cycle model of saving with uncertain lifetime and borrowing constraint. When there is uncertainty about the length of life, it is optimal for some individuals to save little and exhaust their wealth early. The characteristics of these individuals are derived. The simulation results support that the model can account for low wealth holdings as well as early terminal wealth depletion. The analysis also rejects the common perception that uncertain lifetime reduces dissaving. Journal of Economic Literature Classification Numbers: D11, D91, E21, I12, J14.     

A generalized algebraic model for optimizing inventory decisions in a centralized or decentralized multi-stage multi-firm supply chain

First of all, a number of integrated models with/without lot streaming under the integer multiplier coordination mechanism is generalized by allowing lot streaming and three types of inspection for some/all upstream firms. Secondly, the optimal solutions to the three- and four-stage models are individually derived, both using the perfect squares method, which is a simple algebraic approach so that ordinary readers unfamiliar with differential calculus can easily understand how to obtain the optimal solution procedures. Thirdly, optimal expressions for some well-known models are deduced. Fourthly, expressions for sharing the coordination benefits based on Goyal’s (1976) scheme are derived, and a further sharing scheme is introduced. Fifthly, two numerical examples for illustrative purposes are presented. Finally, some future research works involving extension or modification of the generalized model are suggested.     

Constrained dynamic futures portfolios with stochastic basis

Annals of Finance - We study the problem of dynamically trading multiple futures contracts on different underlying assets subject to portfolio constraints. The spreads between futures and spot...     

Productive Efficiency of the Swine Industry in Hawaii: Stochastic Frontier vs. Data Envelopment Analysis

Improving productive efficiency is an increasingly important determinant of the future of the swine industry in Hawaii. This paper examines the productive efficiency of a sample of swine producers in Hawaii by estimating a stochastic frontier production function and the constant returns to scale (CRS) and variable returns to scale (VRS) output-oriented DEA models. The technical efficiency estimates obtained from the two frontier techniques are compared. The scale properties are also examined under the two approaches. The industry's potential for increasing production through improved efficiency is also discussed.     

Income Tax, Property Tax, and Tariff in a Small Open Economy

Why do some countries enjoy high economic growth rates while some suffer in “low-growth traps”? Why are tax policies in different countries so different? Some suggest that it is exactly these differences in government policies which contribute to the difference in economic growth rates. This paper considers a small open economy which sustains its economic growth by adopting new technologies. When the value of initial wealth is “relatively small,” policies which promote growth most result in the highest welfare. In other cases, policies that discourage growth most may be welfare-maximizing.