Divergence-based estimation and testing with misclassified data

The well-known chi-squared goodness-of-fit test for a multinomial distribution is generally biased when the observations are subject to misclassification. In Pardo and Zografos (2000) the problem was considered using a double sampling scheme and ø-divergence test statistics. A new problem appears if the null hypothesis is not simple because it is necessary to give estimators for the unknown parameters. In this paper the minimum ø-divergence estimators are considered and some of their properties are established. The proposed ø-divergence test statistics are obtained by calculating ø-divergences between probability density functions and by replacing parameters by their minimum ø-divergence estimators in the derived expressions. Asymptotic distributions of the new test statistics are also obtained. The testing procedure is illustrated with an example.     

Testing symmetry under a skew Laplace model

We develop tests of hypothesis about symmetry based on samples from possibly asymmetric Laplace distributions and present exact and limiting distribution of the test statistics. We postulate that the test statistic derived under the Laplace model is a rational choice as a measure of skewness and can be used in testing symmetry for other, quite general classes of skew distributions. Our results are applied to foreign exchange rates for 15 currencies.     

A Design of Attributes Double Sampling Plans for Three-class Products

In this article, a new attributes double sampling plan for three-class products (ADSPTP) is presented, and the corresponding operating characteristic function is constructed based on the given procedure of performing ADSPTP. Average sample numbers (ASN) for complete inspection and curtailed inspection of the second sample are derived and the extreme point is discussed on the three-dimensional ASN surface. In addition, the differences arising from different parameters are studied. Sampling plans are designed by a nonlinear optimization model. Finally, numerical examples and discussions are given to illustrate the obtained results, and tables of the designed plans under various conditions are provided.     

Double and group acceptance sampling plan for truncated life test based on inverse log-logistic distribution

This paper introduces a double and group acceptance sampling plans based on time truncated lifetimes when the lifetime of an item follows the inverse log-logistic (ILL) distribution with known shape parameter. The operating characteristic function and average sample number (ASN) values of the double acceptance sampling inspection plan are provided. The values of the minimum number of groups and operating characteristic function for various quality levels are obtained for a group acceptance sampling inspection plan. A comparative study between single acceptance sampling inspection plan and double acceptance sampling inspection plan is carried out in terms of sample size. One simulated example and four real-life examples are discussed to show the applicability of the proposed double and group acceptance sampling inspection plans for ILL distributed quality parameters.     

Double robust estimator in general treatment regimes based on Covariate-balancing

Double robust estimators have double the chance of being a consistent estimator of a causal effect in binary treatments cases. In this paper, we proposed an estimator of a causal effect for general treatment regimes based on covariate-balancing. Under parametrical situation, our estimator has double robustness.     

“双置换”中土地权益问题探讨

为了解我国各地正进行的＂双置换＂政策中的土地问题,调查了苏南W市L村的＂双置换＂过程,通过问卷和访谈的方式分析个中集体土地所有权及各项权能在置换中的实际变动情况,发现这种置换使得集体所有权主体和部分权能转移,同时土地承包权去向不明等。尽管这项政策能较快提高土地集约利用率,推动当地农业发展,但是必须要考虑农民长远利益及各项应得权益。     

陶渊明的重阳诗与唐代诗人的接受——以陶渊明重阳诗中的“菊”意象为中心

《九日闲居.并序》是陶渊明唯一的一首吟咏到菊花的重阳诗,此诗在唐代产生了极大的影响。该文通过对《九日闲居》的分析,认为诗中"重阳"、"菊"等意象表达了陶渊明对寿考长年的渴求与企羡,而唐代诗人在接受陶渊明此诗的过程中,陶诗中那种企求长生的浓浓气息被逐渐消解掉了,代之而起的是另外的种种情感寄托和人生感受。分析其原因大致有二:陶渊明诗中"菊"意象的开放性;佛教的兴盛与生命主题的消歇。陶诗"菊"意象的开放性使唐人对陶渊明重阳诗的接受背离本意成为可能,而佛教的勃兴与生命主题的消歇,使这种异变成为必然。     

双顺差对货币政策有效性影响的实证分析

运用计量分析方法,对我国1994—2009年外汇储备与货币供应量M2、外汇占款及基础货币的相关关系进行实证研究,结果表明,双顺差引致外汇储备的大量增长是导致M2增长的原因,外汇占款已经成为央行供应基础货币的重要渠道之一,而国际收支双顺差最终会造成货币政策的有效性降低。     

1999-2003年双十佳社科学报实证分析

选取22种学报为对象,对其近5年的信息量、稿件来源、基金论文、合著、作者情况、时滞、关键词、参考文献、文摘率等项展开调查,并与《中国社会科学》等中外名刊进行比较。统计结果表明,双十佳学报刊均年载文量137篇,2/3的稿件来自本校,93.83%的稿件源于高校;基金论文比9.73%;合作度1.23,合著率19.31%,高职称、高学历著者占80.81%;时滞176天,篇均关键词3.5个;平均引文量7.37条,其中引用图书占72.88%,期刊占20.63%;年平均文摘率15.90%。相比较而言,双十佳学报在发文量、审稿时间、标准化著录等方面有一定优势。     

贫困脆弱性视角下参与式社区综合发展的精准“防贫”效应分析

利用贵州省纳雍县两个贫困行政村跨期十数年的农户追踪调查数据,从贫困脆弱性视角量化分析、评价不同时期参与式社区综合发展的“防贫”效应及其精准性。结果表明,欠发达地区农户的贫困脆弱性在1999-2011年期间降幅巨大（约下降99%）,抗风险冲击能力得到极大提升。总体上,参与式社区综合发展的“防贫”即期效应显著,可使农户贫困脆弱性指数降低5个百分点以上,然其“防贫”时滞效应却并不突出。分不同群体考察,参与式社区综合发展“防贫”虽存在一定“漏出效应”和“溢出效应”,但包容性较强、瞄准精度尚可,能惠及大多数“重度脆弱户”和“中度、轻度脆弱户”;换言之,除“微度脆弱户”、“极度脆弱户”及部分“重度脆弱户”外,其间各贫困脆弱组农户均能从中得到保障,然贫困脆弱性强度越高,所受保障程度愈小。不仅如此,参与式社区综合发展此种“防贫”的精准度可持续性差,无明显时滞效应。