萧乾小说的诗性与基督教文化

萧乾小说具有明显的诗性特征.萧乾小说独特的人性视角和善恶并存的生命意识,给小说带来了既忧郁又悲壮的诗化情调.萧乾小说在反基督教的表层叙事结构下隐含着从伦理价值建构方面向基督教文化寻求文化资源的价值取向.基督教文化和<圣经>文学,带给萧乾小说抒情方式间接性、暗示性的形式美感.     

现代性与当代审美文化的结构

当代审美文化的结构性生成是在现代性进程中发生的。我们可以用“生活/艺术”、“大众/精英”、“保守/前卫”这三对范畴来描述当代审美文化的内部结构。值得注意的是,在事实性的领域中这三对范畴之间的斜线(/)不是断然明确而固定不变的,正是这条斜线的颤动、扭曲、变化甚至消失和再生,标志着当代审美文化活生生的生命存在与运动。     

探因"贾岛现象"

在大诗人迭出的唐代,相形之下,贾岛的文学成就并不算高,但其对后世诗人的影响远远超出了其自身的成就.晚唐多种风格林立,但后人所称"晚唐体"却仅指贾岛一派诗风.北宋初九僧、林逋等隐逸诗人,南宋末永嘉四灵,明末竟陵派均宗师贾岛."贾岛现象"的浪底到底存在着怎样的动力源,竟能一次次地在文学史上掀起千层浪花?笔者试从贾岛生平、作诗态度、诗歌意境三方面进行论述,探究"贾岛现象"形成的原因.     

日本红十字会参与疫情危机应对的机制及启示

新冠肺炎疫情发生后,中国社会各界积极踊跃捐赠款物,体现了中华民族“一方有难、八方支援”的大爱精神。在此次新冠肺炎疫情防控中,地方政府依循惯例,迅速指定省、市红十字会和慈善总会作为接受社会捐助的专责机构,发挥了重要作用。然而,疫情重灾区湖北、武汉的红十字会却暴露出救援物资分配不均、捐赠收取管理费等问题。本文从国际比较视野出发,选取日本红十字会为研究对象,采取政策文本分析等研究方法,考察日本红十字会的疫情防控参与机制与捐赠款物分配机制,并提出对中国的若干启示。     

Migration and fuel use in rural Zambia

Population and Environment - What is the effect of migration on fuel use in rural Zambia? Opportunities to increase income can be scarce in this setting; in response, households may pursue a...     

对贵州旅游经济发展思考

旅游业是一个综合产业,它可以带动其他产业的发展,因此旅游业具有“乘数效应”。但通过对贵州旅游经济的调查分析,发现贵州旅游业创造的经济价值与它巨大的资源潜力差距非常大。本文通过分析贵州省旅游经济的发展现状,有针对性地提出发展中存在的主要问题,总结出一条具有贵州特色的旅游经济发展道路。     

Variance estimation based on blocked 3×2 cross-validation in high-dimensional linear regression

In high-dimensional linear regression, the dimension of variables is always greater than the sample size. In this situation, the traditional variance estimation technique based on ordinary least squares constantly exhibits a high bias even under sparsity assumption. One of the major reasons is the high spurious correlation between unobserved realized noise and several predictors. To alleviate this problem, a refitted cross-validation (RCV) method has been proposed in the literature. However, for a complicated model, the RCV exhibits a lower probability that the selected model includes the true model in case of finite samples. This phenomenon may easily result in a large bias of variance estimation. Thus, a model selection method based on the ranks of the frequency of occurrences in six votes from a blocked 3×2 cross-validation is proposed in this study. The proposed method has a considerably larger probability of including the true model in practice than the RCV method. The variance estimation obtained using the model selected by the proposed method also shows a lower bias and a smaller variance. Furthermore, theoretical analysis proves the asymptotic normality property of the proposed variance estimation.     

An elastic-net penalized expectile regression with applications

To perform variable selection in expectile regression, we introduce the elastic-net penalty into expectile regression and propose an elastic-net penalized expectile regression (ER-EN) model. We then adopt the semismooth Newton coordinate descent (SNCD) algorithm to solve the proposed ER-EN model in high-dimensional settings. The advantages of ER-EN model are illustrated via extensive Monte Carlo simulations. The numerical results show that the ER-EN model outperforms the elastic-net penalized least squares regression (LSR-EN), the elastic-net penalized Huber regression (HR-EN), the elastic-net penalized quantile regression (QR-EN) and conventional expectile regression (ER) in terms of variable selection and predictive ability, especially for asymmetric distributions. We also apply the ER-EN model to two real-world applications: relative location of CT slices on the axial axis and metabolism of tacrolimus (Tac) drug. Empirical results also demonstrate the superiority of the ER-EN model.     

时光·梦想

生活在19世纪的人们,乐于听到工业革命的轰鸣声。他们知道,这是“现代”的召唤。21世纪的我们,现代的我们则渴望着回到自然的怀抱。这是文明的又一道曲线。它从一个欣欣向荣滑到另一个欣欣向荣。而这两个时代都打上了进步的鲜明烙印,都同样是我们光荣的、关于自身、关于梦想的珍贵记忆。如果好奇于日常生活中的周遭事务,并执着于探求它们的来源,我们会惊奇地发现:时常光顾的超市、购物中心、度假村、俱乐部,始于世界博览会;电视机、留声机、电灯,在世博会上首次展出;甚至第一台纺织机、第一架飞机竟也是从世博会步入我们的生活。“一切始于…     

幼儿冒险游戏水平与抗挫折能力的关系：自我效能感的中介作用

为考察幼儿冒险游戏水平与抗挫折能力的关系,及考察自我效能感在两者关系中的中介作用,本研究随机选取浙江省杭州市148名幼儿为被试,通过任务测评法评定幼儿的冒险游戏水平和自我效能感,通过教师问卷评定报告幼儿的抗挫折能力。结果表明：幼儿冒险游戏水平、自我效能感、抗挫折能力发展良好;冒险游戏水平直接正向预测抗挫折能力,并通过自我效能感间接预测抗挫折能力。