Asymptotic risk comparisions of restricted and unrestricted maximum likelihood estimators

Conditions for choosing between restricted and unrestrieted maximum likelihood estimators based on various asymptotic risk oriteria are derived. These conditions involve the non-centrality parameters of classical and specification test statistics, and are generlizations of well known results for the linear regression model.     

Computing the probability of hash table/urn overflow

We analyze the probability of a random distribution of n balls into m urns of size b resulting in no overflows. This solves the computational problem associated with a classical combinatorial extreme-value distribution. The problem arose during the analysis of a technique, called perfect hashing, for organizing data in computer files. The results and techniques presented can be used to solve several problems in the analysis of hashing techniques     

A generalized inverse regression estimator in multi-univariate linear calibration

A multivariate linear calibration problem, in which response variable is multivariate and explanatory variable is univariate, is considered. In this paper a class of generalized inverse regression estimators is proposed in multi-univariate linear calibration. It includes the classical estimator and the inverse regression one (or Krutchkoff estimator). For the proposed estimator we derive the expressions of bias and mean square error (MSE). Furthermore the behavior of these characteristics is investigated through an analytical method. In addition through a numerical study we confirm the existence of a generalized inverse regression estimator to improve both the classical and the inverse regression estimators on the MSE criterion.     

The effects of covariate adjustment in generalized linear models

Results from classical linear regression regarding the effects of covariate adjustment, with respect to the issues of confounding, the precision with which an exposure effect can be estimated, and the efficiency of hypothesis tests for no treatment effect in randomized experiments, are often assumed to apply more generally to other types of regression models. In this paper results pertaining to several generalized linear models involving a dichotomous response variable are given, demonstrating that with respect to the issues of confounding and precision, for models having a linear or log link function the results of classical linear regression do generally apply, whereas for other models, including those having a logit, probit, log-log, complementary log-log, or generalized logistic link function, the results of classical linear regression do not always apply. It is also shown, however, that for any link function, covariate adjustment results in improved efficiency of hypothesis tests for no treatment effect in randomized experiments, and hence that the classical linear regression results regarding efficiency do apply for all models having a dichotomous response variable.     

网络小说接受的程式化现象

艺术接受程式化是指受众倾向于按照既有的心理模式或思维定势接受作品,受众的接受动机主要为消遣、娱乐,接受状态比较被动,接受效果主要为表层愉悦。当下网络小说接受的程式化现象主要表现为三个方面,即内容选择类型化、关注热点快速更替和接受视角单一化。网络小说接受的程式化现象是由复杂的社会条件和受众固有的接受心理决定的,有其存在的正当性与合理性,但其对艺术的负面效应也不应忽视。     

浅析《紫色》的书信体风格

《紫色》(TheColorPurple)是美国当代黑人女作家艾丽斯·沃克(AliceWalker)的代表作品之一。小说采用书信体形式,全书由92封书信构成。在小说中,艾丽斯·沃克娴熟运用现代叙述技巧,采用第一人称作为叙述人称的主线,但又不局限于第一人称,并从人物的视角进行叙述,让读者在阅读文本时,随着人物的视角,直接感受到人物的思想情绪与主观体验,从而清晰透视到女主人公茜莉从麻木、觉醒、抗争到独立的心灵感受和生活历程。本文从《紫色》的叙述技巧和主人公个性的成长两个方面分析《紫色》的书信体风格及其产生的艺术效果。     

论亚里士多德《诗学》中的古典叙事理论

亚里士多德的《诗学》是西方古典叙事理论的发轫之作。第一,亚氏认为文学叙事起源于摹仿,叙事的本质是摹仿和虚构的有机统一。第二,把以情节作为第一要素的古典叙事理论进行了全面而科学的论证和归纳。第三,指出了叙事时间、叙述者和叙述声音等具有现代叙事学意义的叙事手法。第四,梳理了叙事效果的类别和途径。第五,提出了叙事批评的标准。总之,亚氏的《诗学》无疑是西方第一部有关古典叙事理论的具有科学性和系统性的经典著作。     

论郑临川古典诗词的精神向度

郑临川先生的古典诗词在理想追求、爱国情怀、社会责任、读书治学等方面都深深地打上了时代烙印。他的诗词大都是人生旅程的写照,在对时势无奈的痛苦中发出感时哀世之吟,从而抒怀言志,表达强烈的爱国之情;其诗歌无论纪游、赠别、思乡、怀人,多呈离乱的悲凉心境,折射出知识分子发自内心深处的时代感怀。无论是刚接触现实融入社会的歌吟之作,还是表现漂泊流离、前途渺茫的无端伤感,抑或后来反映教书育人的心中吐蕊,以及人生起伏的情感激荡,无不透露着自觉而强烈的社会责任。老一辈知识分子那种坚定的爱国热情和自觉的社会责任,正是中华民族世代薪火相传的精神认同。     

论中国古代小说的典范场景及其结构功能

场景作为诸叙述方式中最重要的一种,是衡量叙事艺术成就高低的一个标准。中国古代历史演义、英雄传奇、世情等各类题材的小说,无论是以语言为表现重心的“文场”还是以动作为表现重心的“武场”,都构设出了具有中国特色审羡风范的场景范型。这些典范场景不但构成了小说的核心趣味场,而且在结构方面也发挥着重要的作用。     

论鸳鸯蝴蝶派言情小说中的理性色彩

本文指出言情小说中缠绵悱恻的感性故事背后浸透着理性色彩,且在内容上含有一定程度的进步性,提倡个性解放,渗透反帝爱国情怀。