关于Ismail-May算子线性组合的同时逼近

本文推广了的结果,主要研究了一类Ismail-May算子线性组合的同时逼近问题,在一致通近意义下,给出了逼近的正定理、逆定理及非最优逼近阶的特征刻划.     

Model averaging for M-estimation

M-estimation is a widely used technique for robust statistical inference. In this paper, we study model selection and model averaging for M-estimation to simultaneously improve the coverage probability of confidence intervals of the parameters of interest and reduce the impact of heavy-tailed errors or outliers in the response. Under general conditions, we develop robust versions of the focused information criterion and a frequentist model average estimator for M-estimation, and we examine their theoretical properties. In addition, we carry out extensive simulation studies as well as two real examples to assess the performance of our new procedure, and find that the proposed method produces satisfactory results.     

A Simple Approximate Procedure for Constructing Binomial and Poisson Tolerance Intervals

The problems of constructing tolerance intervals for the binomial and Poisson distributions are considered. Closed-form approximate equal-tailed tolerance intervals (that control percentages in both tails) are proposed for both distributions. Exact coverage probabilities and expected widths are evaluated for the proposed equal-tailed tolerance intervals and the existing intervals. Furthermore, an adjustment to the nominal confidence level is suggested so that an equal-tailed tolerance interval can be used as a tolerance interval which includes a specified proportion of the population, but does not necessarily control percentages in both tails. Comparison of such coverage-adjusted tolerance intervals with respect to coverage probabilities and expected widths indicates that the closed-form approximate tolerance intervals are comparable with others, and less conservative, with minimum coverage probabilities close to the nominal level in most cases. The approximate tolerance intervals are simple and easy to compute using a calculator, and they can be recommended for practical applications. The methods are illustrated using two practical examples.     

Study of a Markov model for a high-quality dependent process

For high-quality processes, non-conforming items are seldom observed and the traditional p (or np) charts are not suitable for monitoring the state of the process. A type of chart based on the count of cumulative conforming items has recently been introduced and it is especially useful for automatically collected one-at-a-time data. However, in such a case, it is common that the process characteristics become dependent as items produced one after another are inspected. In this paper, we study the problem of process monitoring when the process is of high quality and measurement values possess a certain serial dependence. The problem of assuming independence is examined and a Markov model for this type of process is studied, upon which suitable control procedures can be developed.     

中国传统手工艺文化重建的路径分析

工业社会各种文化对传统手工艺文化的冲击和破坏是当前传统手工艺传承和保护困难的原因之一。适应当代社会文化发展的需要,重建传统手工艺文化是促进当前手工业发展的必要工作之一。要明确我国传统手工艺文化的突出特征以及文化重建的内涵。应结合现代工业文化的影响,对传统手工艺文化进行有重点的重建。重建的关键路径是,适应现代企业经营理念,重建传统手工业企业的经营文化和技艺传承文化,同时激发社会对传统手工艺文化的消费需求。     

癌症基因组研究信息披露的伦理探讨

癌症基因组计划是当前研究热点,存在诸多伦理、法律及社会问题,如何有效地保障基因组研究参与者的知情同意是值得关注的内容。信息披露(disclosure)作为知情同意的第一要素具备深厚的伦理基础,然而与传统医学研究相比,癌症基因组研究由于其目的与内容的特殊性,研究中信息披露的内容和标准尚存在诸多伦理问题,需要深入探讨。     

灵活就业流动人口养老保险服务研究——基于社会融合视角

户籍制度引致的城乡二元结构让灵活就业流动人口难以真正融入城市公共服务体系,也给养老保险扩面工作带来困难。区别于既有研究侧重于流动人口养老保险政策和制度的调整,并基于经济融合、心理融合、社会接纳三个社会融合的维度,我们对浙江、四川进行了专项调研,分析了灵活就业流动人口参加社会养老保险意愿不高的原因,发现缴费能力低、城市归属感不强、就业地政策排斥是制约该群体在城市长期居留和养老参保的主要因素。为此,政府应着力提升该人群的个体人力资本,搭建社区交流平台,拓宽其社会融合的意见表达渠道,进而推动养老保险扩面服务。     

民国时期的边文教材与藏族学生国家意识的培育

教科书是链接国家、知识精英与社会大众的纽带,是塑造共同认同的有力工具。南京国民政府较为重视边文教材的编译与使用,希冀借此推进少数民族学生的国家认同建设。抗战胜利后,教育部下设的国立边疆文化教育馆编译了一套《国文藏文对照初级小学语文常识课本》,试图分别从政治、民族、历史、文化四个方面入手,对藏族学生的国家意识进行塑造。边文教材的编译者考虑到了藏族学生的接受能力,循序渐进地编译教材内容,同时非常注重在编译中加入乡土元素,也很注意内外有别的问题,这些都有助于藏族学生在潜移默化中形成对中华民族的认同。虽然编译边文教材是南京国民政府推进国家认同建设的重要工程,但由于当时的国家治理能力有限,加之国民党深陷内战,无暇顾及边疆教育等客观因素,该套教材最终并没有大规模和持续性地对藏族社会产生影响。     

资本流动对经济增长影响

在综述哈罗德--多马和索罗--斯旺的经济增长模型的基础上,进一步放松模型的假设,可以推导出经济增长的新模型.得出的新模型能较好地说明资本流动对经济增长的重要性.尤其在我国目前储蓄率居高不下的情况下,新模型具有较强的现实性.