广义集压缩映射原理及其对积分方程组的应用

本文对Banach空间中映射组证明了一个不动点定理.利用这个定理,我们给出了Banach空间中非线性Fredholm和Volterra积分方程组解的存在性定理,也获得了非线性Volterra积分方程组极值解的存在定理和比较定理.这些定理推广了文[1]中的相应结果.     

对固定资产加速折旧问题的探讨

本文主要阐述了固定资产加速折旧的意义 ,并通过分析加速折旧法的特点和实例 ,充分验证了企业固定资产实行加速折旧的可行性和必要性。     

国民福利核算理论构造的再研究

本文在探讨国民福利定义及其理论公式基础上,构建出国民福利核算的指标公式。同时,针对理论界在绿色GDP核算(狭义的国民福利指标)研究方面所出现的种种误解,以福利经济学外部性理论为依据,提出了外部性核算理论,从而为国民福利总值的核算给出必须遵循的基本原则。     

产出与经济效益的相应关系研究

在文献[1～4]的基础上,进一步提出产出-完全经济效益传递系数、贡献系数和受益系数,以揭示产出与经济效益的相互联系和数量关系,并在此基础上提出了提高各部门经济效益的主要途径。     

实变函数课程教改实践与思考

阐述了改进实变函数课程教学的几项措施.     

Copules archimédiennes et families de lois bidimensionnelles dont les marges sont données

Every bivariate distribution function with continuous marginals can be represented in terms of a unique copula, that is, in terms of a distribution function on the unit square with uniform marginals. This paper is concerned with a special class of copulas called Archimedean, which includes the uniform representation of many standard bivariate distributions. Conditions are given under which these copulas are stochastically ordered and pointwise limits of sequences of Archimedean copulas are examined. We also provide two new one-parameter families of bivariate distributions which include as limiting cases the Frechet bounds and the independence distribution.     

Properties of a class of inequality measures: A proposal for a resistant version

Summary This note explores the robustness properties of a general class of ineqyality measures which includes the Bonferroni and the Gini indexes as special cases and proposes some modifications in order to make them outlier resistant.     

A Nonatomic‐Game Approach to Dynamic Pricing under Competition

We study a revenue management problem involving competing firms. We assume the presence of a continuum of infinitesimal firms where no individual firm has any discernable influence over the evolution of the overall market condition. Under this nonatomic‐game approach, the unanimous adoption of an equilibrium pricing policy by all firms will yield a market‐condition process that in turn will elicit the said policy as one of the best individual responses. For both deterministic‐ and stochastic‐demand cases, we show the existence of equilibrium pricing policies that exhibit well‐behaving monotone trends. Our computational study reveals many useful insights, including the fact that only a reasonable number of firms are needed for our approach to produce near‐rational pricing policies.     

Fixed‐Effects Dynamic Panel Models,a Factor Analytical Method

We consider the estimation of dynamic panel data models in the presence of incidental parameters in both dimensions: individual fixed‐effects and time fixed‐effects, as well as incidental parameters in the variances. We adopt the factor analytical approach by estimating the sample variance of individual effects rather than the effects themselves. In the presence of cross‐sectional heteroskedasticity, the factor method estimates the average of the cross‐sectional variances instead of the individual variances. The method thereby eliminates the incidental‐parameter problem in the means and in the variances over the cross‐sectional dimension. We further show that estimating the time effects and heteroskedasticities in the time dimension does not lead to the incidental‐parameter bias even when T and N are comparable. Moreover, efficient and robust estimation is obtained by jointly estimating heteroskedasticities.     

兵团固定资产投资与生产总值增长关系研究

生产总值和固定资产投资之间存在着动态均衡机制,经济增长为资本形成和投资增量的形成提供了物质基础,经济增长可以推动投资更快速度的增长;同时,经过相对较长时间的资本积累,固定资产投资对经济增长具有显著的促进作用。该文以固定资产投资和生产总值增长的关系为切入点,通过理论研究和实证分析,运用计量经济学联立方程模型,量化了兵团固定资产投资与生产总值增长之间的关系,并为相关部门的决策提出了建议。