Nonparametric confidence and tolerance intervals from record values data

In a number of situations only observations that exceed or only those that fall below the current extreme value are recorded. Examples include meteorology, hydrology, athletic events and mining. Industrial stress testing is also an example in which only items that are weaker than all the observed items are destroyed. In this paper, it is shown that, how record values can be used to provide distribution-free confidence intervals for population quantiles and tolerance intervals. We provide some tables that help one choose the appropriate record values and present a numerical example. Also universal upper bounds for the expectation of the length of the confidence intervals are derived. The results may be of interest in situation where only record values are stored.     

抓好传球教学与训练提高篮球教学质量初探

本文阐述了传球技术在篮球运动中的重要地位及作用，并围绕传球手感动作的正误，传球的反应速度，造成失误的因素等进行分析，总结出提高传球技术的教学与训练的部分成功方法。     

词块与英语专业学生写作质量的相关性研究

以湖北工业大学英语专业三年级学生的62篇习作为语料进行定量分析,试图探究英语专业学生的词块能力与其写作水平之间的相关性。分析结果显示：词块的正确使用与学生的写作质量显著相关,但每类词块与写作质量的相关系数不同。甸子构建者和短语搭配与学生写作质量高度相关;其次是多字短语;而约定俗成的表达法和限制性短语则与学生的写作质量未见明显相关性。     

MIDAS模型与EQW模型预测精度的比较——以资产价格的经济增长效应为例

深入剖析混频数据模型（MIDAS）的内部结构,推导出MIDAS模型与传统同频率EQW模型的区别与联系,并且证明EQW模型参数估计的偏误,在此基础上,进一步结合多种不同形式的权重函数,推导出MIDAS类模型非线性最小二乘估计方法的具体机理及理论演绎过程,并且以资产价格对中国经济增长效应的样本内预测为例,对MIDAS模型的精度进行了实证检验。实证结果表明:多元EQW模型的拟合效果及样本内预测精度均低于最优滞后阶数下ExpAlmon-AR-M-MIDAS模型,ExpAlmon-AR-M-MIDAS模型能够提取更多高频解释变量的有效信息。     

Simultaneous Confidence Intervals for Ratios of Fixed Effect Parameters in Linear Mixed Models

In multiple comparisons of fixed effect parameters in linear mixed models, treatment effects can be reported as relative changes or ratios. Simultaneous confidence intervals for such ratios had been previously proposed based on Bonferroni adjustments or multivariate normal quantiles accounting for the correlation among the multiple contrasts. We propose Fieller-type intervals using multivariate t quantiles and the application of Markov chain Monte Carlo techniques to sample from the joint posterior distribution and construct percentile-based simultaneous intervals. The methods are compared in a simulation study including bioassay problems with random intercepts and slopes, repeated measurements designs, and multicenter clinical trials.     

英语律师法庭辩论词中的模糊限制语分析

根据Hyland提出的模糊限制语的分类模式,在英语律师法庭辩论词中辨别出三类模糊限制语：准确性指向类,说者指向类,听者指向类。文章对这三类模糊限制语的不同的语言实现方式及作用进行了详细探讨,期望能进一步加深对律师法庭辩论中语言策略运用的认识。     

GPS测量在怀远县城镇地籍控制测量中的应用与精度分析

以怀远县城镇地籍调查与测量工程中的D、E级GPS测量为背景,根据测区的特点、已知点的情况及作业依据等基本情况,确定布网方案及布网原则,介绍了GPS测量所使用的仪器和观测过程中应注意的事项以及解算过程,重点对GPS控制网平差计算过程中所涉及的基线处理、三维无约束平差以及二维约束平差后的精度进行统计,对其精度进行分析,并用全站仪对部分GPS点进行测距,使用改正后的两点间边长与坐标反算边长进行比较,同时以常规的定向方法检测另一GPS点的坐标并与原坐标进行比较,证明GPS点的可靠性,以供测绘人员参考和借鉴。     

Likelihood Prediction for Generalized Linear Mixed Models under Covariate Uncertainty

This article presents the techniques of likelihood prediction for the generalized linear mixed models. Methods of likelihood prediction are explained through a series of examples; from a classical one to more complicated ones. The examples show, in simple cases, that the likelihood prediction (LP) coincides with already known best frequentist practice such as the best linear unbiased predictor. This article outlines a way to deal with the covariate uncertainty while producing predictive inference. Using a Poisson errors-in-variable generalized linear model, it has been shown in certain cases that LP produces better results than already known methods.