历史地缘政治背景下广西政治中心的选择与分省设想

唐后期,为了控驭广西西南部的非汉民族,在广西境内首次设立高层政区岭南西道,道治位于邕州,但历时短暂。从北宋到明代,在以民族因素为主导的地缘政治背景下,广西的政治中心长期位于桂林。清代中前期,民族因素对广西地缘政治的影响削弱,桂林作为省会只是历史惯性的作用。清后期爆发的边疆危机,成为广西地缘政治变动的新因素,广西省会由桂林迁往南宁成为历史发展的妊然趋势。     

凝视生命，凝练对词语的激情

怀藏对词语的激情,穿越厚重的文化空间,渴望用修辞手段来支配词语的命运,从而以“灾异”的风格描摹词语的魅力,这应该是刘恪的《词语诗学》的抱负之所在,同时这也就完成了当代诗学的一次大胆的创化。搜罗集体记忆的碎片,通过编织文本的艺术来呈现人类文化历史的残像余蕴,实现宏大的历史与微渺的体验之间的沟通,《词语诗学》体现了全球时代中国诗学的一种可能走向。     

论新时期网络参政与中国民主政治发展

新时期网络参政对中国民主政治发展促进作用将更加明显,是有中国特色民主政治发展的重要内容之一。网络参政的作用已经引起了党和国家领导人的重视,地方党和政府的负责人也逐渐注意到网络参政的实际意义,其作用主要体现在：促进参与式民主的发展;促进传统集权等级制权力结构的转换;促进社会平等;促进政治、政府公开的发展;促进选民与人大代表的沟通;促进公民政治社会化的加强。网络参政还是把双刃剑,应该加强规范和管理。     

Cumulative correspondence analysis of ordered categorical data from industrial experiments

Most studies of quality improvement deal with ordered categorical data from industrial experiments. Accounting for the ordering of such data plays an important role in effectively determining the optimal factor level of combination. This paper utilizes the correspondence analysis to develop a procedure to improve the ordered categorical response in a multifactor state system based on Taguchi's statistic. Users may find the proposed procedure in this paper to be attractive because we suggest a simple and also popular statistical tool for graphically identifying the really important factors and determining the levels to improve process quality. A case study for optimizing the polysilicon deposition process in a very large-scale integrated circuit is provided to demonstrate the effectiveness of the proposed procedure.     

Another look at Huber's estimator: A new minimax estimator in regression with stochastically bounded noise

Huber's estimator has had a long lasting impact, particularly on robust statistics. It is well known that under certain conditions, Huber's estimator is asymptotically minimax. A moderate generalization in rederiving Huber's estimator shows that Huber's estimator is not the only choice. We develop an alternative asymptotic minimax estimator and name it regression with stochastically bounded noise (RSBN). Simulations demonstrate that RSBN is slightly better in performance, although it is unclear how to justify such an improvement theoretically. We propose two numerical solutions: an iterative numerical solution, which is extremely easy to implement and is based on the proximal point method; and a solution by applying state-of-the-art nonlinear optimization software packages, e.g., SNOPT. Contribution: the generalization of the variational approach is interesting and should be useful in deriving other asymptotic minimax estimators in other problems.     

Regularization through variable selection and conditional MLE with application to classification in high dimensions

It is often the case that high-dimensional data consist of only a few informative components. Standard statistical modeling and estimation in such a situation is prone to inaccuracies due to overfitting, unless regularization methods are practiced. In the context of classification, we propose a class of regularization methods through shrinkage estimators. The shrinkage is based on variable selection coupled with conditional maximum likelihood. Using Stein's unbiased estimator of the risk, we derive an estimator for the optimal shrinkage method within a certain class. A comparison of the optimal shrinkage methods in a classification context, with the optimal shrinkage method when estimating a mean vector under a squared loss, is given. The latter problem is extensively studied, but it seems that the results of those studies are not completely relevant for classification. We demonstrate and examine our method on simulated data and compare it to feature annealed independence rule and Fisher's rule.     

一种新的右手定则替代佛莱铭左手及右手定则

大凡读过高中的人,都知道佛莱铭左手和右手定则,这种左、右定则很容易记错,有时要将手扭歪才能判定其方向,很难运用．为了方便学生记忆及方便判定方向,设法设计出一种新的右手定则,可以同时判定磁场对电流的作用力及磁场中导线所产生的感生电流的方向,显然这种右手定则是一个创新．     

从马克思主义的国家学说看达赖集团分裂祖国的反动本质

西藏自古以来就是中国的一部分,这无论是过去还是现在都是全世界各国所公认的事实.以达赖为首的民族分裂集团,自1959年叛逃后,在国外长期从事民族分裂活动,利用国际上提供的各种场合,到处宣称"西藏自古以来是一个独立国家"的反动谬论,利用混淆古代国家与现代国家的概念,不仅搞乱了人民群众的思想,模糊了人民群众的视线,同时也造成了极大的危害,为其推行"民族独立"的分裂活动张目.我们必须以马克思主义国家学说为指导,牢固掌握西藏自古以来就是中国的一部分的科学内涵,牢固树立正确的马克思主义祖国观,以实际行动抵制达赖的民族分裂活动,积极维护祖国统一和民族团结,为建设团结、富裕、文明、和谐的社会主义新西藏而努力奋斗.     

Are Father’s or Mother’s Socioeconomic Characteristics More Important Influences on Student Performance? Recent International Evidence

Since the early 1970s the importance of mothers’ socioeconomic characteristics on their children’s educational and occupational attainment has been acknowledged. However, it is not clear if fathers’ characteristics have a stronger influence because men usually have stronger attachments to the labour market, or alternatively mothers’ characteristics are more important because of their greater role in children’s socialization. This study addresses this question by comparing the influence of father’s and mother’s education and occupation on student performance in literacy and numeracy using data from 30 countries. The impact of mother’s education is usually greater or comparable to that of father’s education. In contrast, substantially stronger effects for mother’s occupational status compared to father’s were rare. In most countries the impact of mother’s socioeconomic characteristics (education plus occupation) on student performance is comparable to that for father’s. Of the four indicators of socioeconomic background, father’s occupational status and mother’s educational attainment tend to have stronger effects, although many countries do not conform to this pattern. There are indications that the relative importance of mother’s characteristics have increased over time.

中国的百岁老人

本文利用“中国高龄老人健康长寿”课题 1998年调查数据 ,首次对中国百岁老人的基本特征进行了分析。该调查随机抽取了 2 2个省约 50 %的县市 ,在自愿基础上调查了其中所有百岁老人。中国百岁老人是一个以女性、文盲、丧偶者为主的人口群体 ,乐观向上、豁达开朗是共同的性格特征。多数百岁老人在经济活动年龄时从事农业或家务劳动 ,没有退休金 ,只能依靠家庭进行经济供养、生活照料、精神慰藉 ,他们以家庭为主的居住安排也利于家庭养老。中国百岁老人相对比较健康 ,患病率较低 ,多数认为自己身体较好或一般 ,对自己的生活比较满意 ,但有相当比例在日常生活中需要他人提供部分或全部帮助