Optimizing the Collections Process in Consumer Credit

This paper builds a dynamic programming model to optimize the collections process in consumer credit. It determines which collections actions should be undertaken and how long they should be performed, including theoretical results about the form of the optimal policy under certain conditions. Finally, a case study is described based on data from the collections department of a European bank.     

基于企业动态能力的新兴技术演化模型及案例研究

结合新兴技术的特点,在动态能力组织学习模型研究成果的基础上,提出了一个基于企业动态能力的新兴技术演化模型。结合该模型探讨了企业动态能力推动新兴技术演化的路径。并以SONY Walkman的演化过程为例对模型进行了检验,结果表明动态能力的形成有利于新兴技术的演化。     

高职高专院校教学及管理初探

本文以高职高专院校教学、科研、实验、实训及管理为背景,结合应用性和实用性较强的计算机应用专业的高职高专学生的教学与管理进行全方位的剖析,结合实际对比分析了传统教学中存在的种种蔽端,创新性地提出技能型课程进行"动态教学与管理"的现代教学理念,对高职高专的教学与管理,具有一定的理论研究价值和实践指导价值.     

亚当·斯密国际贸易理论的再思考

长期以来,人们对斯密的国际贸易理论存在着误解,认为它是静态理论,不符合现实情况。事实上,斯密从国民经济发展的角度探讨国际贸易及其与经济发展的互动关系,因而具有动态分析的特点。他在其著作《国富论》中表达了比较优势的基本思想,强调“后来获得的”要素及运输成本对一国优势地位和对外贸易的影响,认为不发达的农业国可通过学习和采用先进的生产技术获得优势,主张按具体情况对不同产品实行关税政策和渐进式的自由贸易政策。     

网络环境下“以问题为中心”的“动态”外语教学模式的研究与实践

按照教育部颁布的《大学英语课程教学要求(试行)》,以建构主义和人本主义学习理论为理论依据,通过对英语网络及NBCAI教学环境的分析和对符合我院特色的"以问题为中心"的"动态"外语教学模式的实践,以及对学生和教师的问卷分析,论证了我院"模式"体现了以学生为本开展个性化教学的理念,在一定程度上有利于培养和提高学生独立发现、分析和解决问题的能力.     

Estimating the Technology of Cognitive and Noncognitive Skill Formation

This paper formulates and estimates multistage production functions for children's cognitive and noncognitive skills. Skills are determined by parental environments and investments at different stages of childhood. We estimate the elasticity of substitution between investments in one period and stocks of skills in that period to assess the benefits of early investment in children compared to later remediation. We establish nonparametric identification of a general class of production technologies based on nonlinear factor models with endogenous inputs. A by‐product of our approach is a framework for evaluating childhood and schooling interventions that does not rely on arbitrarily scaled test scores as outputs and recognizes the differential effects of the same bundle of skills in different tasks. Using the estimated technology, we determine optimal targeting of interventions to children with different parental and personal birth endowments. Substitutability decreases in later stages of the life cycle in the production of cognitive skills. It is roughly constant across stages of the life cycle in the production of noncognitive skills. This finding has important implications for the design of policies that target the disadvantaged. For most configurations of disadvantage it is optimal to invest relatively more in the early stages of childhood than in later stages.     

The Dynamic Pivot Mechanism

We consider truthful implementation of the socially efficient allocation in an independent private‐value environment in which agents receive private information over time. We propose a suitable generalization of the pivot mechanism, based on the marginal contribution of each agent. In the dynamic pivot mechanism, the ex post incentive and ex post participation constraints are satisfied for all agents after all histories. In an environment with diverse preferences it is the unique mechanism satisfying ex post incentive, ex post participation, and efficient exit conditions. We develop the dynamic pivot mechanism in detail for a repeated auction of a single object in which each bidder learns over time her true valuation of the object. The dynamic pivot mechanism here is equivalent to a modified second price auction.     

战略过程：一个基于决策的数理模型

以标准的战略管理过程模型为基础,将战略过程解释为战略状态的演变过程,其中战略状态变化被解释为战略决策和外生随机扰动共同作用的结果,应用随机动态规划模型化战略决策理性。结果表明,采用动态规划技术不仅可以确定战略状态的价值(竞争优势)与相应的最优战略制定决策和战略实施决策序列,还可以识别战略过程中的信息揭示对企业价值(竞争优势)的影响。这些结果在一定程度上逻辑一致地支持了战略管理中以理性决策为基本假设的设计学派和计划学派的观点。     

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.