战争与20世纪外国文学--兼论茨威格小说对战争的描写

20世纪已经成为历史,当我们回眸20世纪外国文学时,必须正视“战争与20世纪外国文学”这个无法回避的话题。战争使人的处境变得越来越难以理喻,人们在精神上普遍感到迷惘、痛苦、悲观。人的心理变得更加复杂。20世纪西方社会的种种困惑人心的问题以完全不同于19世纪传统作家的方式进入了文学。茨威格像20世纪其他许多作家一样,在其作品中很少像传统文学那样直接再现战争场面．主要是表现战争对人心理的冲击和影响。     

星勺图StnP1C4的性质

该文定义了一类新的图形--星勺图StnP1C4,并定义了图的次奇强协调性,同时给出了它的奇优美标号、k-优美标号及次奇强协调标号,从而证明了星勺图StnP1C4是奇优美图、k-优美图和次奇强协调图.     

Investigating Elementary and Middle School Students’ Subjective Well-Being and Mathematical Performance in Shanghai

Students in Shanghai ranked at the top in mathematics on the past two assessments of the Program for International Student Assessment (PISA). However, even though Asian students in general, and Chinese students in particular, ranked at the top in mathematics, we know little about Shanghai students’ subjective well-being (SWB). This paper reports two studies that investigated the SWB of elementary and middle school students in Shanghai, as well as their mathematics performance. It is found that the mean scores of elementary school students on all scales of SWB are significantly higher than those of middle school students, representing a large drop for students when moving from elementary to middle school. Furthermore, students’ mathematics performance is moderately correlated with their SWB. And for Grade 6, students’ SWB affects their mathematics performance, especially from academic self-concept, attentiveness in the classroom, and relationship with teachers.     

成人教育教师管理的信息论基础探略

和系统论、控制论并称为“现代三大科学之光”的信息论已被广泛地运用于各个学科和领域。本文仅谈一下如何用信息论来指导成人教育教师管理。     

In vitro antioxidant activity of phenolic-enriched extracts from Zhangping Narcissus tea cake and their inhibition on growth and metastatic capacity of 4T1 murine breast cancer cells

Phenolics, as the main bioactive compounds in tea, have been suggested to have potential in the prevention of various human diseases. However, little is known about phenolics and their bioactivity in Zhangping Narcissue tea cake which is considered the most special kind of oolong tea. To unveil its bioactivity, three phenolic-enriched extracts were obtained from Zhangping Narcissue tea cake using ethyl acetate, n-butanol, and water. Their main chemical compositions and in vitro bioactivity were analyzed by high-performance liquid chromatography (HPLC) and ultraperformance liquid chromatography-mass spectrometry (UPLC-MS). The ethyl acetate fraction (ZEF) consisted of higher content of phenolics, flavonoids, procyanidins, and catechin monomers (including epigallocatechin gallate (EGCG), epicatechin gallate (ECG), and gallocatechin gallate (GCG)) than n-butanol fraction (ZBF) and water fraction (ZWF). ZEF exhibited the strongest antioxidant capacity in vitro due to its abundant bioactive compounds. This was validated by Pearson correlation and hierarchical clustering analyses. ZEF also showed a remarkable inhibition on the growth, migration, and invasion of 4T1 murine breast cancer cells.     

中国大学生价格反应行为的基本特征

本文应用对中国13511名大学生的调查数据分析了学生价格反应行为的基本特征。结果表明，虽然接受高等教育需要承担较高的私人成本，学生的付费意愿却非常强烈，在学费上涨30％—300％五种不同幅度时，学生的高等教育需求对学费的弹性介于—0．045～—0．288之间。大学生的价格反应行为具有如下几个方面的特点：首先，学生的高等教育需求对学费及有些学生资助(如奖学金)具有灵敏的反应；其次，学生对学费及不同类型学生资助的反应不仅在性质上存在差异，而且在程度上也有所不同；第三，不同收入水平家庭学生对学费的反应是不同的；第四，学生对学费及学生资助的反应随着学生资助政策及学费的变化而变化。本文也讨论了上述结果对制订高等教育规划与财政政策的意义。     

Reduction rate of dragload and downdrag of piles by taper angles

Taper angle is one of the effective methods to reduce the dragload and downdrag of piles under the surcharge load. The model tests on the tapered pile and uniform cross-section pile embedded in sand were carried out under the surcharge load. The values of dragload and downdrag of piles versus the surcharge loads were measured. Based on the concentric cylinder shearing theory, a simplified theoretical model for calculating the dragload and downdrag of tapered piles with small taper angles under the surcharge load was proposed considering the angle effect. The correctness of the developed theoretical model was validated through comparing with the model test results obtained in this study and previous literature. Then the parametric studies of the taper angle, surcharge, strength and modulus of soil were discussed. It is shown that the tapered pile with the taper angle of 3° can reduce approximately 65% of the maximum dragload value and 30% of the downdrag value compared with a uniform cross-section pile. The value of downdrag can be decreased by approximately 50% compared with a uniform crosssection pile in the same average pile diameter.     

谈正弦定理推导中的数学探究

《普通高中数学课程标准(实验)》指出:数学探究即数学探究性课题学习,是指学生围绕某个数学问题,自主探究、学习的过程.这个过程包括:观察分析数学事实,提出有意义的数学问题,猜测、探求适当的     

朱元璋与历史教育

文章着重探讨朱元璋历史教育的相关活动:朱元璋重视历史教育的原因、进行历史教育采取的形式以及注重历史教育所产生的作用。朱元璋重视历史教育,对明初政治产生重大影响,有其积极作用;但过分注重历史教育的政治价值,也带来了消极影响。     

浅议开放教育的考试改革

开放教育的考试基本上是传统教育考试的框架,能否用现代远程教育理念去改革、创新将直接关系到开放教育的教育质量以及人才培养的目标实现。本文针对目前开放教育考试中存在的死记硬背的题型、考试形式的陈旧、方法单一等问题,提出了开放教育考试要突出考试内容的创新、题型的灵活、考试方法的科学及考试的开放性的改革理念及解放思想、更新观念、大胆探索,从改革考试形式入手,改进书面考试题型,完善、规范形成性考核,逐步试行计算机无纸化考试等具体建议,使考试进一步科学地服务于教学。