On Robust Analysis of a Normal Location Parameter

Pericchi and Smith considered a normal location parameter problem with double-exponential and Student t prior distributions. These two prior distributions both belong to the class of scale mixtures of normal distributions and are useful in providing a robust analysis of the normal location parameter problem. In this paper we extend the analysis to other scale mixtures of normal distributions, such as the exponential power and the symmetric stable distributions.     

供应链系统视角下消费者环境意识的社会分配效应研究

消费者环境意识既会促进环境保护,又会改变消费行为、市场需求、消费者福利和企业利润等的分配。然而,消费者环境意识的分配效应是环境保护、消费行为和社会分配三者的结合部,在现有研究中鲜有涉及。对此,从供应链系统视角建立博弈模型,求解供应链定价和生态技术投资决策,分析消费者环境意识逐级传导引起的连锁反应,研究消费者环境意识如何改变社会分配格局。研究发现：首先,消费者环境意识会提高市场价格和企业利润,但是会降低消费者福利;其次,消费者环境意识会提高企业的分配地位,其中对零售企业的提高程度更大,但是会降低消费者的分配地位;最后,消费者环境意识越强,企业分配地位的提高程度和消费者福利的下降程度就越大。本研究丰富了对消费者环境意识多种作用的认识,有利于合理权衡环保、经济和分配等制定科学合理的发展政策。     

Recurrence relations for moments of progressively censored order statistics from logistic distribution with applications to inference

In this paper, we establish several recurrence relations for the single and product moments of progressively Type-II right censored order statistics from a logistic distribution. The use of these relations in a systematic manner allows us to compute all the means, variances and covariances of progressively Type-II right censored order statistics from the logistic distribution for all sample sizes n, effective sample sizes m, and all progressive censoring schemes (R₁,…,R_m). The results established here generalize the corresponding results for the usual order statistics due to [Shah, 1966] and [Shah, 1970]. These moments are then utilized to derive best linear unbiased estimators of the location and scale parameters of the logistic distribution. A comparison of these estimators with the maximum likelihood estimations is then made. The best linear unbiased predictors of censored failure times are briefly discussed. Finally, an illustrative example is presented.     

Exact likelihood inference for Laplace distribution based on Type-II censored samples

We develop exact inference for the location and scale parameters of the Laplace (double exponential) distribution based on their maximum likelihood estimators from a Type-II censored sample. Based on some pivotal quantities, exact confidence intervals and tests of hypotheses are constructed. Upon conditioning first on the number of observations that are below the population median, exact distributions of the pivotal quantities are expressed as mixtures of linear combinations and of ratios of linear combinations of standard exponential random variables, which facilitates the computation of quantiles of these pivotal quantities. Tables of quantiles are presented for the complete sample case.     

Estimation using plug-in of the stationary distribution and Shannon entropy of continuous time Markov processes

A natural way to deal with the uncertainty of an ergodic finite state space Markov process is to investigate the entropy of its stationary distribution. When the process is observed, it becomes necessary to estimate this entropy.We estimate both the stationary distribution and its entropy by plug-in of the estimators of the infinitesimal generator. Three situations of observation are discussed: one long trajectory is observed, several independent short trajectories are observed, or the process is observed at discrete times. The good asymptotic behavior of the plug-in estimators is established. We also illustrate the behavior of the estimators through simulation.     

A Bayesian analysis for the Block and Basu bivariate exponential distribution in the presence of covariates and censored data

In this paper, we introduce a Bayesian Analysis for the Block and Basu bivariate exponential distribution using Markov Chain Monte Carlo (MCMC) methods and considering lifetimes in presence of covariates and censored data. Posterior summaries of interest are obtained using the popular WinBUGS software. Numerical illustrations are introduced considering a medical data set related to the recurrence times of infection for kidney patients and a medical data set related to bone marrow transplantation for leukemia.     

毒隐翅虫研究进展 1名称,分类与生物学

本文论及毒隐翅虫的学名、俗名、分类与生物学.该属棣于毒隐翅虫亚科的毒隐翅虫族.     

理顺收入分配机制 促进国民经济发展

收入分配不合理是制约当前中国经济发展的主要因素之一。本文分析了现阶段我国收入分配不合理的表现及原因,并提出了相应的政策举措。     

光波叠加研究的计算机模拟法

在光波叠加的传统方法之上推导出计算公式，用计算机高级语言来编写程序，输入内存且运行后可在屏幕上模拟显示光强分布图，而且可以实现人机对话．灵活选择不同参数，可以得到比课本上更直观更多样化的图形，在教学中起到了很好的辅助作用     

社会主义市场经济条件下按资分配的几个问题

按资分配 ,是社会主义市场经济的必然要求。按资分配不违背马克思主义的劳动价值论 ,对我国社会、经济的发展具有重要的积极作用 ,但其中剥削性质的部分会影响社会公平 ,在实施时 ,必须采取正确的政策 ,做到既积极 ,又稳妥