“Since this is the editorial section I intend to express my opinion”: Inequality and expressivity in letters to the editor

This paper analyzes the argumentative style and the characteristics of writers of newspaper letters to the editor. Writers are more likely to be White, male, older, more politically active, and less likely to be politically moderate than the local population. Inequality in political participation persists in this forum. Gender and sense of local political efficacy influence how letter writers make their points. Letters to the editor mostly display inequalities similar to other forms of political participation.     

使入射光线偏转180度的光学介质球

应用光线理论分析了使入射光线偏转180度的光学介质球的工作原理,得到了它的折射率分布形式,它可以使任意的入射光束偏转180度．它与用平面镜组成的只能使某一特定方向的入射光线偏转180度的器件相比性能更优越．     

一类伪抛物方程的特征问题

利用Riemann方阵和泛函积分方程组,证明了一类伪抛物方程组特征问题的解的唯一存在性。     

模糊函数的Romberg积分

本文通过对模糊数和模糊函数的介绍,定义了模糊函数的积分,并推导出模糊函数的复合梯形积分公式,将该数值积分公式外推改进为Romberg积分公式,加快了模糊函数数值积分的收敛速度,最后给出了具体的数值应用．     

双解析函数的混合边值问题

运用第二分解定理求解了双解析函数的Hasemann边界条件和Riemann边界条件的混合边值问题,给     

压差方程的Godunov格式

为求压差方程黎曼问题中关于压力的非线性方程的解,Godunov格式给出一个合理的初始近似值,利用Newton迭代法和一些必要的计算得到格式中的数值流.计算发现：此格式对于计算压差方程只包含强简单波的黎曼解是很好的,对于计算压差方程的包含弱简单波的数值解是不适用的.最后,文章对这种数值现象的产生做了进一步探讨.     

REPORTING THE EUROPEAN UNION

This article sketches a picture of the journalists involved in European Union (EU) reporting. Firstly, it presents an overview of the entire body of EU-accredited journalists, examining how they are distributed across the various nationalities, the different forms of media and whether an historical evolution can be traced in either distribution. Secondly, the mechanisms influencing the news flow on EU topics are described, using information gathered from numerous interviews with EU journalists from 10 European countries. The researchers distinguish structural, geographical, economical and policy-related obstacles influencing the EU newsflow. As an example of a media-related obstacle the authors focus on the privileged position of the Financial Times.     

兴趣培养在双手头上投实心球教学中的显著作用

从兴趣培养入手 ,进行双手头上投实心球的教学。在学习的阶段性、内容的选择、方法的运用以及激励的原则等方面大胆实践 ,取得显著效果 ,说明学习兴趣的培养能有效地提高运动成绩。     

一个关于SP（n）的无穷级数的收敛性

对任意正整数n,Samarandache幂函数SP（n）的定义是存在一个最小的正整数,使得n/m^m,其中m和n有相同的素因子．该文的主要目的是通过运用初等方法研究含有Samarandache幂函数SP（n）的无穷级数的收敛性,以及给出了若干具有一定研究意义的恒等式．