家庭禀赋对农户家庭经营技术效率的影响冲击——基于湖北省农户的随机前沿生产函数实证

 内容提要：本文采用超越对数生产函数形式的随机前沿模型，以湖北省农户的微观面板数据作为实证，对影响农户家庭经营技术效率的外生性因素进行了系统分析，归纳出以下几点结论：在其他条件不变的情况下，以农村教育和技术培训为代表的人力资本投资、农村信息化建设和耕地的细碎化耕种会给技术效率带来明显的正效应，农户的干部身份、外出务工以及获得的银行信用支持会在不同程度上恶化其技术效率水平，经营规模的扩大可以改善技术效率水平，但盲目扩大规模往往会得不偿失。在此基础上，文章还归纳出一系列政策建议来试图改善农户家庭经营的技术效率水平。     

圆面探测器对圆面源(非同轴)的几何因子的加权蒙特卡罗计算

用椭圆观察因子加权Monte callo方法计算了圆面探测器对均匀平行圆面源(两圆面中心轴线间距离为C)的几何因子,并且与圆面探测器对均匀同轴圆面源的几何因子进行了比较,探讨了两圆面中心轴线间距离C对几何因子的影响;为了检验本文方法及所编程序的好坏,选取c=0时的数据与多边形近似法进行了比较.并根据讨论的结果,提出了对实验操作的要求.     

项目投资效益审计的不确定性分析

项目投资效益审计中经常存在许多不确定性因素，对这些因素进行不确定性分析，才能找出影响项目投资的重要因素，为管理决策提供依据。在介绍效益审计概念与不确定性产生原因的基础上讲述了盈亏平衡点与敏感性分析项目在投资效益审计的应用。     

论政府行政管理费用支出占财政支出的比重目标控制

我国行政管理支出中所造成的巨大的浪费,要从制度上加以杜绝,首先必须尽快建立一整套严格、细致的"绿色采购"制度。其次还要把定额管理等技术手段应用于政府行为中,建立政府机构能耗统计体系,并把政府机构节能责任纳入各工作岗位职责和日常管理的考核之中。     

公平偏好下的团队效率研究

在Alchian & Demsetz标准团队理论基础上,将代理人内在的公平偏好考虑进来,建立了基于公平偏好的团队理论模型,分析在预算平衡约束和代理人的公平偏好存在条件下的团队效率以及公平偏好对团队合作的作用机理,可以为合理利用代理人的公平偏好提高团队生产效率,提供理论指导和启示.     

Local rank estimation and related test for varying-coefficient partially linear models

This paper develops a robust estimation procedure for the varying-coefficient partially linear model via local rank technique. The new procedure provides a highly efficient and robust alternative to the local linear least-squares method. In other words, the proposed method is highly efficient across a wide class of non-normal error distributions and it only loses a small amount of efficiency for normal error. Moreover, a test for the hypothesis of constancy for the nonparametric component is proposed. The test statistic is simple and thus the test procedure can be easily implemented. We conduct Monte Carlo simulation to examine the finite sample performance of the proposed procedures and apply them to analyse the environment data set. Both the theoretical and the numerical results demonstrate that the performance of our approach is at least comparable to those existing competitors.     

秩序·效率·公平·人权论邓小平理论的法价值意蕴

邓小理理论重视建设社会主义现代化的法治国家,邓小平虽没有直接阐述法价值体系,但邓选还是意蕴着对法价值体系的终极关怀秩序是法价值的基础,效率是法价值的中介手段,公平是法价值的目的,人权是法价值的核心.     

Median regression for SUR models with the same explanatory variables in each equation

In this paper we introduce an interesting feature of the generalized least absolute deviations method for seemingly unrelated regression equations (SURE) models. Contrary to the collapse of generalized leasts-quares parameter estimations of SURE models to the ordinary least-squares estimations of the individual equations when the same regressors are common between all equations, the estimations of the proposed methodology are not identical to the least absolute deviations estimations of the individual equations. This is important since contrary to the least-squares methods, one can take advantage of efficiency gain due to cross-equation correlations even if the system includes the same regressors in each equation.     

Logistic discrimination using robust estimators: An influence function approach

Logistic regression is frequently used for classifying observations into two groups. Unfortunately there are often outlying observations in a data set and these might affect the estimated model and the associated classification error rate. In this paper, the authors study the effect of observations in the training sample on the error rate by deriving influence functions. They obtain a general expression for the influence function of the error rate, and they compute it for the maximum likelihood estimator as well as for several robust logistic discrimination procedures. Besides being of interest in their own right, the influence functions are also used to derive asymptotic classification efficiencies of different logistic discrimination rules. The authors also show how influential points can be detected by means of a diagnostic plot based on the values of the influence function     

改革开放30年中国能源发展战略的变革

改革开放30年来中国能源发展战略发生了重大变革，从改革开放前的“开源战略”转变为改革开放后的“综合能源效率战略”，从而为上世纪党中央提出的“一番保两番”目标提前5年实现提供了有力保障。针对新世纪党中央提出又一个“经济翻两番”目标，笔者提出了“能源与经济协调发展战略”及其对策建议。