《我听到美国在歌唱》创作手法浅析

文章通过分析惠特曼<我听到美国在歌唱>一诗,指出其创造性地运用了富有诗意的"我"和由现在分词构成的并列结构,生动传神地把当时美国的勃勃生机展现在读者面前.     

聚焦中国英语课堂:影响学生参与讨论的因素—— 一次采用定性分析法进行本土化研究的尝试

通过课堂观察及课后的学生采访,本文采用定性研究法考察了决定英语课堂上中国学生讨论情况的因素。　　本文的主要发现是：（１） 中国文化推崇的谦虚美德明显地妨碍了学生们抒发己见;（２） 学生推理能力和英语表达能力之间的鸿沟是引起表达焦虑的主要原因;（３） 教师的角色左右学生讨论中表现。基于上述发现,本文认为,课堂学习由民族性格、教育体制、口语习得心理以及教师角色所决定。因此建议,今后要注意研究课堂学习和其他影响因素之间的关系     

《西安交通大学学报（社会科学版）》载文学术影响分析

根据文献计量学原理,对<西安交通大学学报(社会科学版)>刊载的学术论文进行统计分析,探究其在社会科学的研究中所关注的热点,并分析热点随时间的变化趋势.同时,对学术论文的作者、机构的分布,引文数量、类型,被引频次进行统计研究,检验了期刊的目标定位.     

Nonparametric estimation of waiting time distributions in a Markov model based on current status data

We construct nonparametric estimators of state waiting time distribution functions in a Markov multistate model using current status data. This is a particularly difficult problem since neither the entry nor the exit times of a given state are directly observed. These estimators are obtained, using the Markov property, from estimators of counting processes of state entry and exit times, as well as, the size of “at risk” sets of state entry and transitions out of that state. Consistency of our estimators is established. Finite-sample behavior of our estimators is studied by simulation, in which we show that our estimators based on current status data compare well with those based on complete data. We also illustrate our method using a pubertal development data set obtained from the NHANES III [1997. NHANES III Reference Manuals and Reports (CD-ROM). Analytic and Reporting Guidelines: The Third National Health and Nutrition Examination Survey (1988–94). National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD] study.     

More flexible sequential and non-sequential designs in long-term clinical trial

In this paper, we describe decision making procedures as they exist in most clinical trials,review some recently suggested approaches to monitoring and clarify how these methods allow greater flexibility in monitoring and explicit specification of data monitoring methods in the protocol.     

Model Averaging for Prediction With Fragmentary Data

ABSTRACT

One main challenge for statistical prediction with data from multiple sources is that not all the associated covariate data are available for many sampled subjects. Consequently, we need new statistical methodology to handle this type of “fragmentary data” that has become more and more popular in recent years. In this article, we propose a novel method based on the frequentist model averaging that fits some candidate models using all available covariate data. The weights in model averaging are selected by delete-one cross-validation based on the data from complete cases. The optimality of the selected weights is rigorously proved under some conditions. The finite sample performance of the proposed method is confirmed by simulation studies. An example for personal income prediction based on real data from a leading e-community of wealth management in China is also presented for illustration.     

FIGARCH模型对股市收益长记忆性的实证分析

一、问题的提出长记忆性是指过去的冲击持续到将来,对预期的将来具有很大的影响。在大多数情况下,自相关函数的曲线图用来描述时间序列的长记忆特征。因此长记忆性可以定义如下：假设Ｙｔ是一个离散的时间序列,ｊ阶滞后的自相关函数为ρｊ,如果有ｌｉｍｎ→∞Σｎｊ＝...     

财税政策对新能源汽车产业与地方经济的激励效应研究 ——以青岛市为例

新能源汽车产业,是在全球资源、能源供给日趋紧张、生态环境日益恶化的背景下提出的国家七大战略性新兴产业之一.财税政策作为调控宏观经济运行的重要工具,对新能源汽车产业的发展具有重要作用.梳理并比较了中央以及与青岛经济发展相似地方政府支持新能源汽车发展的相关财税政策,采用上市公司数据实证检验了财政补贴和税收优惠对新能源汽车企业发展盈利能力的影响,测度了新能源汽车企业发展对地方经济以及财政收入的影响.研究结果表明,财政补贴和税收优惠均对新能源汽车企业的发展具有显著的正向作用,而且新能源汽车企业的发展又连锁带动了地方经济的发展及财政收入的增长.     

异文词汇研究与《汉语大词典》编纂——以《世说新语》和《晋书》异文词汇为例

异文研究在文字、音韵、训诂、词汇、语法以及版本校勘等方面具有重要的价值,也即是说,异文对汉语史的研究意义重大.以《世说新语》和《晋书》异文词汇为例,说明《汉语大词典》在词条失收、书证滞后、例证断裂、义位遗漏等方面的缺憾.     

汉字术语近代转换现象辨析——以“经济”、“形而上学”为例

清末民初以降,一批翻译西方概念的汉字新术语应运而生,其间多有成功之作,却也有失当的案例。有些本是内涵明确而稳定的古汉语词,在借以对译西方概念的过程中,既抛弃了该词的汉语古义,也未与西义确切对应,又不能从词形推导出新义。经济、形而上学便是两个使用频率甚高的误植译词。今天我们有必要追踪误植发生的轨迹,探讨其在何种历史的及文化的背景下失足,以便总结教训,利于当下及今后中外术语对译的健康展开。此一梳理、辨析工作,当为中国近代文化史研究的题中应有之义。