Generalized RCINAR(1) Process with Signed Thinning Operator

A generalized random coefficient first-order integer-valued autoregressive process with signed thinning operator is introduced, this kind of process is appropriate for modeling negative integer-valued time series. Strict stationarity and ergodicity of process are established. Estimators of the parameters of interest are derived and their properties are studied via simulation. At last, we use bootstrap method in the real data analysis.     

背越式跳高易犯错误及其纠正方法

通过对背跃式跳高的助跑、起跳、过杆和落地，各阶段容易产生的错误动作进行分析，找出易犯错误，分析原因，提出解决这些问题应采取的方法，为更好地学习背跃式跳高提供理论依据。     

Computation of finite population parameters and approximate probability values for multi-response randomized block permutation procedures (mrbp)

An algorithm is presented for computing the finite population parameters and the approximate probability values associated with a recently-developed class of statistical inference techniques termed multi-response randomized block permutation procedures (MRBP).     

随钻电阻率测井介电效应校正图版分析及方法

以斯伦贝谢公司随钻电阻率测井仪ARC675系列为例，重点分析了介电效应对相位移和幅度衰减电阻率的影响规律。给出了ARC675随钻电阻率测井仪在2MHz和400kHz工作频率下的校正图版和校正方法，编制了自动介电效应校正计算机程序并对油田实际随钻电阻率测井数据进行了介电效应校正，校正的结果验证了对介电效应影响规律的分析，得到了更为正确的地层电阻率值。实例证明拟合公式是正确的。     

严元照以《说文》校正《尔雅》研究

严元照的《尔雅匡名》在清代上百部《尔雅》研究之作中较有特色,尤其是其以《说文》校正《尔雅》的研究方法给后人很大的启迪。他以《说文》为参照,从古代用字角度、书体演变角度、汉字构形角度研究了《说文》与《尔雅》之间的差异,基本上澄清了《尔雅》收字情况、《尔雅》流传过程中的讹变等问题,为后人研究《尔雅》提供了可资借鉴的善本。     

Generalized Weibull Linear Models

For the first time, a new class of generalized Weibull linear models is introduced to be competitive to the well-known generalized (gamma and inverse Gaussian) linear models which are adequate for the analysis of positive continuous data. The proposed models have a constant coefficient of variation for all observations similar to the gamma models and may be suitable for a wide range of practical applications in various fields such as biology, medicine, engineering, and economics, among others. We derive a joint iterative algorithm for estimating the mean and dispersion parameters. We obtain closed form expressions in matrix notation for the second-order biases of the maximum likelihood estimates of the model parameters and define bias corrected estimates. The corrected estimates are easily obtained as vectors of regression coefficients in suitable weighted linear regressions. The practical use of the new class of models is illustrated in one application to a lung cancer data set.     

Response predictions in regressions on panel data

In this paper we consider the problem of obtaining best linear unbiased estimators of individual response coefficients in a Random Coefficient Linear Regression (RCR} Model, comparing alternative estimators for these response vectors through a simulation study. We also provide an empirical example that illustrates the estimation procedure proposed here.     

Four Correlation Coefficients with a Third Blocking Variable: Their Efficacy,Relative Efficiency,and Test Statistics

Abstract

The efficacy and the asymptotic relative efficiency (ARE) of a weighted sum of Kendall's taus, a weighted sum of Spearman's rhos, a weighted sum of Pearson's r's, and a weighted sum of z-transformation of the Fisher–Yates correlation coefficients, in the presence of a blocking variable, are discussed. The method of selecting the weighting constants that maximize the efficacy of these four correlation coefficients is proposed. The estimate, test statistics and confidence interval of the four correlation coefficients with weights are also developed. To compare the small-sample properties of the four tests, a simulation study is performed. The theoretical and simulated results all prefer the weighted sum of the Pearson correlation coefficients with the optimal weights, as well as the weighted sum of z-transformation of the Fisher–Yates correlation coefficients with the optimal weights.     

Planning for the 1950 Censuses of Population and Agriculture

The change from the z of “Student's” 1908 paper to the t of present day statistical theory and practice is traced and documented. It is shown that the change was brought about by the extension of “Student's” approach, by R.A. Fisher, to a broader class of problems, in response to a direct appeal from “Student” for a solution to one of these problems.