和谐语境下民族多元文化的发展

我国是一个多民族国家,构建和谐社会必须正确认识和处理好多元民族文化与社会主义和谐文化建设的关系,建设社会主义和谐文化一方面需要加强社会主义核心价值体系建设,另一方面,必须重视我国民族文化中的多元性差异,继承和发展少数民族优秀的文化。     

“以人为本”中“人”的内涵浅析

科学发展观的核心是以人为本,深入落实科学发展观就必须要准确理解“以人为本”中的“人”的真正内涵,这既是指导社会主义和谐社会建设的前提,也是对马克思主义关于人的全面发展理论的继承与发展。     

当前扩大内需刺激消费的实现途径

扩大内需、刺激消费是我国经济持续稳定增长的必然选择。扩大内需、刺激消费就是要通过建立一个相对稳定的社会安全网,创造一个适宜个人消费的环境、增加城镇居民的可支配收入和农民纯收入、寻找各个阶层消费的增长点来扩大私人消费。其次,通过确定公共产品的投资边界、谨防挤出效应、调整财政货币政策来扩大政府公共生产消费。     

已实现波动和赋权已实现波动的比较研究

已实现波动是针对高频金融时间序列的一种全新的波动度量方法,具有不需要模型和计算方便的优点。赋权已实现波动则对已实现波动进行了改进,是另一种更为有效的波动度量方法。本文从定义形式、无偏性、有效性、日历效应等方面对已实现波动和赋权已实现波动加以比较。通过对上海股票市场的实证研究,说明了赋权已实现波动是优于已实现波动的波动估计量。     

Bayesian decision theoretic approach to hypothesis problems with skewed alternatives

Many hypothesis problems in practice require the selection of the left side or the right side alternative when the null is rejected. For parametric models, this problem can be stated as _H0:θ=_θ0$H_0:\theta ={\theta }_0$vs.  _H−:θ<_θ0$H_{-}:\theta <{\theta }_0$ or _H+:θ>_θ0$H_{+}:\theta >{\theta }_0$. Frequentists use Type-III error (directional error) to develop statistical methodologies. This approach and other approaches considered in the literature do not take into account the situations where the selection of one side may be more important or when one side may be more probable than the other. This problem can be tackled by specifying a loss function and/or by specifying a hierarchical prior structure with allowing the skewness in the alternatives. Based on this, we develop a Bayesian decision theoretic methodology and show that the resulted Bayes rule perform better in the side of the alternatives which is more probable. The methodology can be also used in a frequentist's framework when it is desired to discover an alternative that is more important. We also consider the multiple hypotheses problem and develop new false discovery rates for the selection of the left and the right sides of alternatives. These discovery rates would be useful in the situations when one side of the alternatives are more important or more probable than the other.     

试论教师性别对课堂话语互动特征的影响

"性别话语"导致男性和女性在交际方式上存在差异。文章通过对EFL课堂中男女教师课堂话语互动特征的对比分析,探讨性别话语对教学风格及教学效果的影响,从而帮助教师提高自我修正意识,改进教学质量。     

农民集约使用土地的主体权利完善——以农民的社会权为出发点

城乡二元分割,主要是城乡居民所享受的权利悬殊.农民集约使用土地的主体权利贫困包括三个方面,其中最直观的是社会权贫困,最核心的是土地财产权贫困,最重要的是公共产品分享权贫困.促进农村土地集约使用,必须完善和落实相关法律规定,保障农民的主体地位,完善农民的主体权利体系.     

我国城乡居民消费行为的差异性及其政策含义

 我国城乡居民的消费行为存在较大的差异性,以西方消费理论为基础,对城乡居民消费函数分别进行实证检验发现,这种差异性具体表现在相临期间消费关联性、自发消费、边际消费倾向和消费行为稳定性这四个方面。我国城乡居民消费行为的差异性具有重要的政策含义,它表明需要采取城乡有别的消费政策,刺激城镇居民消费的重点应当是通过结构调整与体制改革提高其边际消费倾向,而扩大农村居民消费的关键则应该是提高农民收入水平、优化农民消费行为、促进农民消费的稳定增长。     

A STEPWISE CONFIDENCE INTERVAL PROCEDURE BASED ON AN ASYMMETRIC LOSS FUNCTION WITH APPLICATIONS TO TOXICOLOGICAL EVALUATION

The purpose of toxicological studies is a safety assessment of compounds (e.g. pesticides, pharmaceuticals, industrial chemicals and food additives) at various dose levels. Because a mistaken declaration that a really non-equivalent dose is equivalent could have dangerous consequences, it is important to adopt reliable statistical methods that can properly control the family-wise error rate. We propose a new stepwise confidence interval procedure for toxicological evaluation based on an asymmetric loss function. The new procedure is shown to be reliable in the sense that the corresponding family-wise error rate is well controlled at or below the pre-specified nominal level. Our simulation results show that the new procedure is to be preferred over the classical confidence interval procedure and the stepwise procedure based on Welch's approximation in terms of practical equivalence/safety. The implementation and significance of the new procedure are illustrated with two real data sets: one from a reproductive toxicological study on Nitrofurazone in Swiss CD-1 mice, and the other from a toxicological study on Aconiazide.