基于国际平均全劳动法的中日购买力平价的推算

本文利用独创的国际平均全劳动法推算了2005年中日各部门购买力平价（简称PPP）。用此方法推算的PPP既可满足基国不变性原则也满足矩阵一致性原则。本文推算的中日各部门的PPP主要用于变换可比价格的中日投入产出表。用国际平均劳动法推算的PPP由劳动系数、投入系数、和固定资本损耗系数等技术决定,不会受到工资率、利润率等其他市场因素的影响,因此更适用于可比价格投入产出表的转换。用国际平均劳动法推算的PPP与用GK（Geary-Khamis）法推算的PPP对GDP进行转换,可以发现,用国际平均全劳动法推算的中国实际GDP更大。     

我国汉语国际推广教育问题探析

全球化背景下,国家间的关系日益密切,软实力越来越成为决定一国国际影响力的关键因素。作为文化“走出去”战略的重要组成部分,汉语国际推广与我国的国际关系和国际教育发展密切相关。我国汉语推广的国际教育发展还处于初级阶段,仍存在着招生宣传方式单一、师资力量不足、教学资源配置不均衡等问题,这严重制约了我国汉语国际推广的发展。汉语推广的国际教育应积极建立双向机制,调整教育管理模式,培养教育师资队伍,着力推进汉语推广国际教育的发展。     

海权演变与国际制度的运用

"二战"后,国际制度及其运用成为海权演变的基本方面。海权的国际制度"资源"包括四种要素:国际海洋法、利益协调制度、安全互信制度和海军军控制度。这些制度的确立有助于实现国家间海洋利益的分配,或有助于国家对海洋利益的维护。海权中国际制度的"运用"包括两种模式,即"制衡"与"合作","制衡"模式是国家以制度抗衡他国扩大海洋利益的行为,包括直接制衡与间接制衡;"合作"模式是一国将其主张的规则与他国支持的规则相协调,包括法治合作、霸权合作和合作安全。     

A股和H股净利润双重披露的实证分析（上)--实证研究的背景和结果

以同时发行A股和H股的公司2000、2001和2002年按中国大陆会计规范和香港会计实务准则或国际会计准则披露的会计数据中双重报告的净利润为样本,对差异的净利润进行统计分析,并对产生差异的不同准则项目的影响进行统计和比较分析,其结果表明:我国的会计准则在实质上与发达国家的会计准则已十分相近,按中国大陆会计准则和香港SSAP或IAS分别计算的净利润产生的差异不会对信息使用人产生大的误导.     

政府债务统计国际比较研究

政府债务统计是分析一国或地区政府财政状况和评估财政风险的重要依据,欧洲主权债务危机爆发之后受到国际社会的高度重视。本文对国际组织政府债务统计体系和英、美、加、日、中等国的政府债务统计进行比较研究,分析不同体系和不同国家在概念、分类、指标、统计准则与口径、数据发布等方面的异同及主要特征。目前,中国的政府债务统计尚不完善,存在不少问题,概念与分类体系不明确,不同部门之间统计口径存在差异,统计指标单一,不利于政府债务管理与风险监控。中国应加快建立和完善政府债务统计体系,重点在于：（1）统一政府债务统计口径;（2）尽快开展政府净债务统计;（3）加快编制国家资产负债表;（4）健全政府债务统计指标体系;（5）完善政府债务信息公开制度。     

Sharp upper mean-variance bounds for trimmed means from restricted families

We apply the method of projection to derive sharp upper mean-variance bounds on trimmed means of order statistics of i.i.d. samples coming from restricted families of probability measures. Two families are considered: distributions with decreasing density and decreasing failure rate. We also present some numerical results.     

Some representation theorems in terms of mean residual lifetime and mean inactivity time of coherent systems

Abstract

In this paper, we consider a k-out-of-n system consisting of n identical components with independent lifetimes. We show that when the underlying distribution function F(t) is absolutely continuous, then it can be univocally determined by some particular mean residual lives or mean inactivity times of the system. It is then shown that these results may be extended to coherent (or mixed) systems.     

On the Kullback–Leibler information of hybrid censored data

ABSTRACT

A hybrid censoring is a mixture of Type I and Type II censoring where the experiment terminates when either rth failure or predetermined censoring time comes first or later. In this article, we consider order statistics of the Type I censored data and provide a simple expression for their Kullback–Leibler (KL) information. Then, we provide the expressions for the KL information of the Type I and Type II hybrid censored data.     

Improved best linear unbiased estimators for the simple linear regression model using double ranked set sampling schemes

ABSTRACT

In this paper, we consider the best linear unbiased estimators (BLUEs) based on double ranked set sampling (DRSS) and ordered DRSS (ODRSS) schemes for the simple linear regression model with replicated observations. We assume three symmetric distributions for the random error term, i.e., normal, Laplace and some scale contaminated normal distributions. The proposed BLUEs under DRSS (BLUEs-DRSS) and ODRSS (BLUEs-ODRSS) are compared with the BLUEs based on ordered simple random sampling (OSRS), ranked set sampling (RSS), and ordered RSS (ORSS) schemes. These estimators are compared in terms of relative efficiency (RE), RE of determinant (RED), and RE of trace (RET). It is found that the BLUEs-ODRSS are uniformly better than the BLUEs based on OSRS, RSS, ORSS, and DRSS schemes. We also compare the estimators based on imperfect RSS (IRSS) schemes. It is worth mentioning here that the BLUEs under ordered imperfect DRSS (OIDRSS) are better than their counterparts based on IRSS, ordered IRSS (OIRSS), and imperfect DRSS (IDRSS) methods. Moreover, for sensitivity analysis of the BLUEs, we calculate REs and REDs of the BLUEs under the assumption of normality when in fact the parent distribution follows a non normal symmetric distribution. It turns out that even under violation of normality assumptions, BLUEs of the intercept and the slope parameters are found to be unbiased with equal REs under each sampling scheme. It is also observed that the BLUEs under ODRSS are more efficient than the existing BLUEs.