提高学生党支部组织生活质量的探讨

组织生活是党员教育的重要载体,随着高校基层组织建设不断加强,学生党员比例不断提高,学生党员人数保持较快速的增长。如何使学生党建工作和育人工作有机结合,如何开展卓有成效的党内组织生活,提高组织生活质量,使学生党员时刻凝聚在党组织周围,发挥个人的先锋模范作用,组织的战斗堡垒作用,已经成为高校基层党组织面临的一个重要课题。文...     

Heteroscedasticity-robust estimation of autocorrelation

This paper proposes estimators of the first-order autocorrelation that are based on suitably transformed ratios of successive observations. The new estimators are given by simple functions of the observations. Numerical optimization is not required. Simulations show that they are highly robust against extreme values and clusters of high volatility and are therefore particularly useful for the estimation of serial correlation in return series. Besides, the results of the simulation study also call into question the common practice of correcting the small-sample bias of conventional estimators.     

A note on a by-claim risk model: Asymptotic results

In this note, we restudy a by-claim risk model with general dependence structures between each main claim and its by-claim. Within the framework of regular variation, we derive some asymptotic expansions for the infinite-time and finite-time ruin probabilities.     

MAXIMUM LIKELIHOOD ESTIMATION OF PARAMETERS OF THE TRUNCATED CAUCHY DISTRIBUTION

Truncated Cauchy distribution with four unknown parameters is considered and derivation and existence of the maximum likelihood estimates is investigated here. We provide a sufficient condition for the maximum likelihood estimate of the scale parameter to be finite, and also show that the condition is necessary for sufficiently large samples. Note that all the moments of the truncated Cauchy distribution exist which makes it much more attractive as a model when compared to the regular Cauchy. We also study, using simulations, the small sample properties of the maximum likelihood estimates.     

Revisiting the flexibility and regularity properties of the asymptotically ideal production model

In this paper we estimate the flexibility properties and regular regions for the first three orders of the seminonparametric Asymptotically Ideal Model (AIM) under four different types of constant returns to scale production technologies. The AIM model's parameters are estimatedfrom a Monte Carlo simulation where the data is generated from a three input, one output, globally regular Constant Differences of Elasticity of Substitution function. The Monte Carlo's input quantity and elasticity of substitution estimates at the unit vector are graphed along with the area of the relative price space where the AIM model is monotonically increasing andquasi-concave.     

Clifford分析中无界域上正则函数带共轭值带位移的非线性边值问题

讨论了Clifford分析中无界域上正则函数带共轭值带位移的非线性边值问题．首先引入了无界域上正则函数的Plemelj公式，然后利用积分方程的方法和Schauder不动点理论证明了该非线性边值问题解的存在性，并给出了其积分表达式．     

TESTS FOR SEASONAL DIFFERENCING WITH AN UNKNOWN BREAK-POINT

Some Lagrange multiplier tests for seasonal differencing are proposed; their main objective is to avoid over-differencing due to structural change. The null hypothesis is either the presence of both regular and seasonal unit roots or the presence of a seasonal unit root. Alternative hypotheses allow for stationarity around a possible structural change where the break-point is unknown. The location of the structural change is estimated using the proposed procedures, the asymptotic distribution of the test statistics under the null hypothesis is derived and some useful percentiles are tabulated. An illustrative example based on the Canadian Consumer Price Index is presented.     

规则框架的一种实用简化计算方法

近年来,钢筋混凝土框架结构的应用越来越广泛,在一般工业与民用建筑中,规则框架所占的比例很高,因此合理解决规则框架的简化计算有较大的意义．本文所介绍的规则框架的简化计算方法,对工程实际具有一定的指导意义．     

关于柯西积分定理的一点注记

讨论具有某种特征映射的类似柯西积分定理的结论 .     

Analysis of Order Statistics from Distributions with Regularly Varying Tails

In this article, necessary conditions for comparing order statistics from distributions with regularly varying tails are discussed in terms of various stochastic orders. A necessary and sufficient condition for stochastically comparing tail behaviors of order statistics is derived. The main results generalize and recover some results in Kleiber (2002 Kleiber, C. (2002). Variability ordering of heavy-tailed distributions with applications to order statistics. Statist. Probab. Lett. 58:381388.[Crossref], [Web of Science ®] , [Google Scholar], 2004 Kleiber, C. (2004). Lorenz ordering of order statistics from log-logistic and related distributions. J. Statist. Plann. Infer. 120:2004.[Crossref], [Web of Science ®] , [Google Scholar]). Extensions to coherent systems are mentioned as well.