Analyzing Binomial Data in a Split-Plot Design: Classical Approach or Modern Techniques?

Modeling data that are non-normally distributed with random effects is the major challenge in analyzing binomial data in split-plot designs. Seven methods for analyzing such data using mixed, generalized linear, or generalized linear mixed models are compared for the size and power of the tests. This study shows that analyzing random effects properly is more important than adjusting the analysis for non-normality. Methods based on mixed and generalized linear mixed models hold Type I error rates better than generalized linear models. Mixed model methods tend to have higher power than generalized linear mixed models when the sample size is small.     

On asymptotic distribution of the test statistic for the mean of the non-isotropic principal component

In this paper, the authors derived the large sample distribution of the t statistic based upon the observations on the first principal component instead of the original variables. It is shown that the above statistic is distributed asymptotically as Student's t distribution.     

Testing for the Equality of Two Autoregressive Functions Using Quasi-Residuals

This article discusses the problem of testing the equality of two nonparametric autoregressive functions against one-sided alternatives. The heteroscedastic errors and stationary densities of the two independent strong mixing strictly stationary time series can be possibly different. The article adapts the idea of using sum of quasi-residuals to construct the test and derives its asymptotic null distributions. The article also shows that the test is consistent for general alternatives and obtains its limiting distributions under a sequence of local alternatives. Then a Monte Carlo simulation is conducted to study the finite sample level and power behavior of these tests at some alternatives. We also compare the test to an existing lag matched test theoretically and by Monte Carlo experiments.     

Model Averaging for Prediction With Fragmentary Data

ABSTRACT

One main challenge for statistical prediction with data from multiple sources is that not all the associated covariate data are available for many sampled subjects. Consequently, we need new statistical methodology to handle this type of “fragmentary data” that has become more and more popular in recent years. In this article, we propose a novel method based on the frequentist model averaging that fits some candidate models using all available covariate data. The weights in model averaging are selected by delete-one cross-validation based on the data from complete cases. The optimality of the selected weights is rigorously proved under some conditions. The finite sample performance of the proposed method is confirmed by simulation studies. An example for personal income prediction based on real data from a leading e-community of wealth management in China is also presented for illustration.     

高邮市农民培训的需求意愿与对策研究

人力资本是现代经济增长的重要因素,提高人力资本的主要途径是教育和在职培训.以高邮市农民培训情况的调查为例,研究了农民参加培训的需求意愿、农民已接受培训的情况以及对培训绩效的评价、农民培训的供给与需求意愿一致性,得出以下结论:农民培训需求强烈;除种养新技术外,对管理、创业、电脑等知识表现出较高的学习意愿;最愿意接受现场指导,农技人员的授课受到农民的欢迎;喜欢的培训地点以乡镇和县城为主,期望在农闲时开展培训,时间以3～5天为宜.农民接受的培训以种养技术为主,但目前高邮市农民培训供给与农民受训需求之间总体上讲一致性不强.因此,应大力宣传,提高农民对培训工作的认识;加强调研,实现农民培训供给与需求有效对接;促进竞争,发挥政府与民间机构多元培训主体的积极性;完善制度,构建农民培训工作的考核激励机制.     

灌注桩施工质量控制探讨

以某校实验综合楼为例,总结和分析了在钻孔灌注桩施工过程中容易出现的问题,并提出了相应的质量控制措施.     

基于NURBS方法的转子表面造型技术

采用双三次NURBS方法对某型号转子进行几何造型,对造型过程中出现的曲面延伸、求交和裁剪等问题进行了研究.根据叶片的形状特征,以曲线的几何形式为基础,提出了一种简单实用的曲线曲面延伸方法,实现了切矢量连续的叶片型面的延伸.对于两相交面分别为自由曲面和解析曲面的求交问题,提出了一种简化的跟踪算法,实现了转子叶片型面和圆台面的准确求交和裁剪,从而实现转子精确的几何造型.     

政府的权力作用方式变革与社会治理能力提升

伴随十八届三中全会全面深化改革的启动,以"转变政府职能"为核心的行政体制改革对政府变革权力作用方式,推进治理体系和治理能力现代化提出了新要求。回溯建国以来政府权力作用方式的演变与适应社会治理需要之间的互动过程可以发现,随着社会治理主体、治理方式、治理理念的变化,政府权力作用方式需要相应变革以适应现代社会治理的需要。因此着重探讨新形势下的社会治理所要求的政府权力作用方式变革,进而通过变革提升其社会治理能力。     

道德认知的默会维度——基于认知结构的分析

在道德认知的研究中,对认知结构、道德判断在认知过程中的作用方式存在不同见解,需要一种新的认识进路来诠释。采用默会知识论的一些观点来分析道德认知,可以发现,默会认识的结构与道德认知结构都从格式塔学派的观点发展而来,在发展方向上也都强调认识者主动的整合能力和结构的动态平衡。道德认知的结构与内容之间的关系,与默会知识论中知道怎样(knowhow)和知道那个事实(knowthat)之间的关系表述在方式上基本一致,并强调道德判断的产生须借助于道德主体的情感和价值取向在具体特定条件下完成。因此,道德认知具备人类认识的默会维度,道德认知的发展需要两个必不可少的条件:道德判断能力的发展,以及个体在道德认知结构中的身体在位。道德认知的默会维度支持一种实践性的教育方法,强调通过生活实践来促进道德认知结构的发展,从而最终促进道德的发展。     

试论民初管子研究之转向——以梁启超、胡适为中心的考察

近代以降,诸子学走向复兴,作为其中一支的管子也日益受到学者关注。时值民初,胡适将《管子》定为伪书,梁启超颇受其影响,修正了以往的部分学术主张。此时期管子研究因之出现从阐释到辨伪的学术新转向。