投资与中原经济区发展关系研究——基于1989-2009年河南省的时间序列数据分析

投资是中原经济区建设的重要着力点。以河南为例,利用河南省1989-2009年的时间序列数据,通过ADF单位根检验、Granger因果关系检验等,实证分析了投资与经济发展之间的关系。结果表明：投资增长与经济发展之间存在双向的因果关系。     

A probabilistic approach to Wallis’ formula

We present an alternative proof of Wallis’ formula from the probabilistic point of view. Based on the classical central limit theorem, some discrete distributions with additive property, such as binomial, negative binomial, Poisson and multinomial distributions, are considered to derive π/2.     

Designs for estimating the difference between two responses

In this paper the problem of designing experiments for estimating the difference between responses at two arbitrary points in the region of interest is considered. Under the average mean squared error criterion the design moment conditions have been worked out. The results have been applied to the class of central composite designs.     

改革是新形势下实现人民利益的有效路径——学习党的十七届五中全会精神

党的十六大以来,以胡锦涛为总书记的党中央领导集体,继续解放思想,坚持改革开放,推动科学发展,促进社会和谐,为践行人民利益观呕心沥血。＂改革＂作为决定当代中国命运的关键选择,成为贯穿中国特色社会主义事业始终的关键词,依然是党的十七届五中全会的核心理念。全会深入分析了今后一个时期我国经济社会发展的国内外形势,提出通过经济、政治、文化等方面的深化改革进一步实现人民经济、政治和文化利益。     

Central Limit Theorem approximations for the number of runs in Markov-dependent binary sequences

We consider Markov-dependent binary sequences and study various types of success runs (overlapping, non-overlapping, exact, etc.) by examining additive functionals based on state visits and transitions in an appropriate Markov chain. We establish a multivariate Central Limit Theorem for the number of these types of runs and obtain its covariance matrix by means of the recurrent potential matrix of the Markov chain. Explicit expressions for the covariance matrix are given in the Bernoulli and a simple Markov-dependent case by expressing the recurrent potential matrix in terms of the stationary distribution and the mean transition times in the chain. We also obtain a multivariate Central Limit Theorem for the joint number of non-overlapping runs of various sizes and give its covariance matrix in explicit form for Markov dependent trials.     

晋商大院影壁的艺术学及审美学研究

晋商大院的影壁在艺术学及审美学上均有着独特的风格。譬如其常见的圆形、＂S＂形、弧形和涡纹等构图反映的是中国传统的＂合和＂审美观;文字影壁折射出强烈的儒商情怀和其相关的审美追求;＂四逸＂、山水影壁中的道家美学思想是晋商宅院主人理想生活状态的追求。     

中原经济区视野下河南农村区域文化特征探析

在强有力的政策支撑下,中原经济区视域下的河南文化获得了迅速发展,并表现出了独有的地域特征:农民素质逐步提高,但整体水平偏低;主流意识健康,但封建沉渣尚存;小农意识逐步改观,但市场意识仍需强化;文化性格厚重有余,但冒险精神不足。在文化对经济起巨大推动作用的今天,对农村文化进行必要的扬弃,已成为建设中原经济区必不可缺的重要一环。     

On the asymptotic power and relative efficiency of the frequency X2 test

The asymptotic (Pitman) power of the X² test is investigated for particular classes of alternatives. A simple rule is introduced to identify ‘orthogonal alternatives’, for which the noncentrality parameter can be computed in a very simple way. In the sequel, restricted alternatives are considered and the ARE of the unrestricted test w.r.t. the restricted one is shown to depend only on the numbers of degrees of freedom. The concluding section discusses ‘undetectable alternatives’, i.e. alternatives for which the noncentrality vanishes.     

中州文士对元代儒学的贡献

本文分析中州文士对元代儒学复兴的贡献。文章分四大部分 ,即缑氏山杜时升、杜瑛父子维系二程性理之学的贡献 ;河南姚枢光大北方理学第一功 ;河内许衡继往圣、开来学之功 ;鲁山王磐、西华徐世隆、卫辉王恽推波助澜之功。     

浅析中亚的地缘态势及对中国的影响

中亚地区地缘战略极其重要，具有现实的和潜在的地缘政治价值。冷战后，各大国纷纷介入，使中亚成为大国和地区力量角逐的又一个新的焦点。由于中亚各国是中国的近邻，因此，在中亚展开的激烈地缘竞争态势必然与中国的战略利益密切联系，对中国的边疆稳定、能源安全造成重大的影响。