关于“中国古代分体文学”教学的一点思考

对师范院校中国古代文学这门课程进行分体裁教学的尝试,是近年来乐山师范学院中文系古代文学教研室对中国古代文学教学进行的改革。与传统的授课模式相比,分体教学模式在具有其明显优势的同时,也存在一些引发出我们思考的相关问题。     

Rank-based analysis of repeated measures block designs

A rank-based inference is developed for repeated measures balanced incomplete block and randomized complete block designs using a suitable dispersion function. Asymptotic distributions of rank estimators are developed after establishing approximate linearity of the gradient vector of the dispersion function. Unlike available nonparametric procedures for those designs, estimation and testing are tied together. Three different test statistics are developed for testing the linear hypotheses. Friedman's (1937) statistic and Durbin's (1951) statistic are particular cases of one of the three proposed statistics. An estimate of a scale parameter which appears in the ARE expression as well as as in the variences and covariances of the rank estimators is discussed.     

Maximal inequalities for partial sums of independent random vectors with multi dimensional time parameters

We obtain upper and lower bounds on the distribution of the partial sums constructed from a multi-dimensional array of independent random vectors. These bounds include, among others, generalizations of some of the well known classical inequalities such as the converse Kolmogorov and the Skorokhod-Ottaviani maximal inequalities.     

利益相关者主体性视域下新生代农民工社会保障研究

论述了政府主体性、农民工个体及用人单位主体性发挥在构建新生代农民工社会保障制度方面的重要作用,分析了利益相关者主体性的缺乏导致新生代农民工社会保障制度覆盖率低、退保率高、保障效果差、统筹层次低的原因,提出新生代农民工社会保障制度的构建必须维护政府、用人单位和新生代农民工等利益相关者的主体性地位。     

New Goodness-of-Fit Tests Based on Sample Quantiles

In this article power divergences statistics based on sample quantiles are transformed in order to introduce new goodness-of-fit tests. Quantiles of the distribution of proposed statistics are calculated under uniformity, normality, and exponentiality. Several power comparisons are performed to show that the new tests are generally more powerful than the original ones.     

On the moment generating functions for integer valued random variables

Abstract

In this note, we give explicit expressions of moment generating functions for integer valued random variables in both univariate and multivariate cases, which extend the results obtained by Nadarajah and Mitov [Communications in Statistics–Theory and Methods, 32, 2003, 47–60] and more recently by Chakraborti, Jardim and Epprecht [The American Statistician, 2017], Kwong and Nadarajah [Communications in Statistics–Theory and Methods, 2017]. Some examples are also discussed.     

Informed Public Preferences for Electricity Portfolios with CCS and Other Low‐Carbon Technologies

Public perceptions of carbon capture and sequestration (CCS) and other low‐carbon electricity‐generating technologies may affect the feasibility of their widespread deployment. We asked a diverse sample of 60 participants recruited from community groups in Pittsburgh, Pennsylvania to rank 10 technologies (e.g., coal with CCS, natural gas, nuclear, various renewables, and energy efficiency), and seven realistic low‐carbon portfolios composed of these technologies, after receiving comprehensive and carefully balanced materials that explained the costs and benefits of each technology. Rankings were obtained in small group settings as well as individually before and after the group discussions. The ranking exercise asked participants to assume that the U.S. Congress had mandated a reduction in carbon dioxide emissions from power plants to be built in the future. Overall, rankings suggest that participants favored energy efficiency, followed by nuclear power, integrated gasification combined‐cycle coal with CCS and wind. The most preferred portfolio also included these technologies. We find that these informed members of the general public preferred diverse portfolios that contained CCS and nuclear over alternatives once they fully understood the benefits, cost, and limitations of each. The materials and approach developed for this study may also have value in educating members of the general public about the challenges of achieving a low‐carbon energy future.     

Adaptive Estimation of the Integral of Squared Regression Derivatives

A problem of estimating the integral of a squared regression function and of its squared derivatives has been addressed in a number of papers. For the case of a heteroscedastic model where smoothness of the underlying regression function, the design density, and the variance of errors are known, the asymptotically sharp minimax lower bound and a sharp estimator were found in Pastuchova & Khasminski (1989). However, there are apparently no results on the either rate optimal or sharp optimal adaptive, or data-driven, estimation when neither the degree of regression function smoothness nor design density, scale function and distribution of errors are known. After a brief review of main developments in non-parametric estimation of non-linear functionals, we suggest a simple adaptive estimator for the integral of a squared regression function and its derivatives and prove that it is sharp-optimal whenever the estimated derivative is sufficiently smooth.     

FPK法在集总参数系统随机温度研究中的应用

应用FPK法研究了集总参数系统在对流和辐射环境下温度随机变化的规律。设激励是均值为0的白噪声且系统参数为常量，在与环境对流换热时，系统随机温度的均值不变，方差与系统时间常数的平方根成反比；在与环境辐射换热时，系统随机温度一般不呈正态分布，其中均值，均方值还与系统确定性温度有关，由此可知，当存在随机激励时，用有热惯性的测温系统精确测定动态温度是不可能的。     

动物繁育子代的成本收益分析

动物繁育子代的行为与经济学中的理性人行为一样 ,进行成本收益的计算。在对成本和收益进行比较后 ,动物形成三种繁殖方式 ,即直接繁育、间接繁育和坐享其成。同性恋行为的经济基础就是坐享其成取得遗传收益的特殊情况。人类的生育行为也遵循成本收益计算的经济规律