Altman定理的推广及其应用

进上步推广了Ａｌｔｍａｎ定理，得到了凝聚映象和ｐ１－肾映象的一些新不动点，并且将此结果应用于ＹｐｂｉｃｏＨ积分方程，解决了它的解的存在性问题。     

Bayesian inference for the variance components in general mixed linear models

The general mixed linear model, containing both the fixed and random effects, is considered. Using gamma priors for the variance components, the conditional posterior distributions of the fixed effects and the variance components, conditional on the random effects, are obtained. Using the normal approximation for the multiple t distribution, approximations are obtained for the posterior distributions of the variance components in infinite series form. The same approximation Is used to obtain closed expressions for the moments of the variance components. An example is considered to illustrate the procedure and a numerical study examines the closeness of the approximations.     

The Impact of Domestic Work on Men's and Women's Wages

Past research has consistently found that the negative relationship between housework and wages is stronger for women than for men. This article tests a potential explanation for this difference by focusing on the fact that men and women typically perform different types of household chores. Traditionally “feminine” and “masculine” task types are likely to interfere with work differently, because they vary as to when and how often they must be performed. Based on longitudinal data from the National Survey of Families and Households, fixed‐effects regression results show that only time spent in female housework chores has a negative effect on wages. Furthermore, gender differences in the effect of housework disappear upon disaggregating housework into task types. This research suggests that a more equitable distribution of not only the amount, but also the type, of housework performed by men and women in the home may lead to a narrowing of the gender gap in wages.     

Exponential class of dynamic binary choice panel data models with fixed effects

ABSTRACT

This paper proposes an exponential class of dynamic binary choice panel data models for the analysis of short T (time dimension) large N (cross section dimension) panel data sets that allow for unobserved heterogeneity (fixed effects) to be arbitrarily correlated with the covariates. The paper derives moment conditions that are invariant to the fixed effects which are then used to identify and estimate the parameters of the model. Accordingly, generalized method of moments (GMM) estimators are proposed that are consistent and asymptotically normally distributed at the root-N rate. We also study the conditional likelihood approach and show that under exponential specification, it can identify the effect of state dependence but not the effects of other covariates. Monte Carlo experiments show satisfactory finite sample performance for the proposed estimators and investigate their robustness to misspecification.     

When can random effects be treated as fixed effects for computing a test statistic for a linear hypothesis?

The Idea of treating the random effects as fixed for constructing a test for a linear hypothesis (of fixed effects) in a mixed linear model is considered in this paper. The paper examines when such a test statistic can be computed and what are its distributional properties with respect to the actual mixed model.     

固定资产投资对延边地区经济增长的影响

随着延边地区经济体制的转轨,经济总量跨越式增加,固定资产投资规模不断扩大,投资对国民经济的拉动作用越来越明显.从1990年至201 2年延边固定资产投资和GDP数据资料来看,固定资产投资对延边地区经济增长有积极影响,但也存在一定的问题,因此应加速政府职能转变,明确固定资产投资方向;优化固定资产投资产业结构;加大财政支持力度.统筹城乡固定资产投资结构;促进民营经济发展,完善固定资产投资的所有制结构;优化投资主体,开辟多渠道固定资产投资来源.     

A note on james type robust estimators

M-estimation of a single parameter of the life time distribution is considered based on independent and identically distributed survival data which may be randomly censored. The most robust and the optimal robust M-estimators of the location parameters of the survival time distribution are derived within a class considered in James (1986) as well as for the general unrestricted class. The properties of the estimators corresponding to the above two classes are discussed. A data set is used to illustrate the usefulness of the optimal robust estimators for the parameter of extreme value distribution.     

金融发展与旅游业成长

基于2001~2009年中国大陆30个省区的面板数据,综合采用混合回归（POLS）、固定效应（FE）、 随机效应（RE）估计方法,对金融发展与旅游业成长关系进行经验检验。结果表明：（1）金融发展对旅游业成长有显著正向影响,稳健性分析也支持该结论；（2）经济外向程度、交通基础设施、旅游资源禀赋能显著驱动地区旅游业成长，三者在金融发展与旅游业成长关系中皆起正向调节作用；（3）分区域考察显示，金融发展对旅游业成长的影响呈现区域差异，其对东部的正向影响强度大于中部；（4）在西部，旅游业沿袭的是单一旅游资源驱动型成长模式，金融发展的驱动作用并不明显。     

高校固定资产折旧问题的探讨

《高等学校会计制度》（2009征求意见稿）引入了修正的权责发生制进行固定资产折旧核算,本文以该项改革为核心,结合实务,对征求意见稿中折旧的核算方法及其对高校财务管理的影响进行探讨,并提出思考和建议。     

Detecting and Decomposing the “Faith Factor” in Social-Service Provision and Absorption

Abstract

Faith-based provision and reception of social services may yield results that differ either randomly or persistently (via “fixed effects”) from the outcomes achieved under non-faith-based, but certainly not value-free, administration of these services. Yet attributing raw differences in performance to unobservable factors assumed to derive from “faith” should be a last resort. Instead, the objective of analysis should be to identify any such factors and their cost and strength operationally so that they can become a managed part of any program offered by existing providers or entrants.

These factors, or the cost effectiveness of employing them, could differ between secular and faith-based providers. Then members of the two groups optimally would use a different mix of means even if they were to pursue precisely the same ends. Yet program design and operation by both groups would stand to benefit from knowing the keys to their relative performance in particular areas of social service with particular groups of clients. Comparing the outcomes of experiments based on random assignment may provide little help in that regard. Micro-simulations may provide a superior approach to tightening the link between input-based model predictions and continuous learning from outcomes.