Diagnostics of multiple group influential observations for logistic regression models

In this paper, two new multiple influential observation detection methods, GCD.GSPR and mCD*, are introduced for logistic regression. The proposed diagnostic measures are compared with the generalized difference in fits (GDFFITS) and the generalized squared difference in beta (GSDFBETA), which are multiple influential diagnostics. The simulation study is conducted with one, two and five independent variable logistic regression models. The performance of the diagnostic measures is examined for a single contaminated independent variable for each model and in the case where all the independent variables are contaminated with certain contamination rates and intensity. In addition, the performance of the diagnostic measures is compared in terms of the correct identification rate and swamping rate via a frequently referred to data set in the literature.     

On a control chart for the Gini index with simulations

In this work we suggest the use of the Gini index on control charts. The asymptotic properties of Gini index are presented and the control charts based on appropriate confidence intervals are constructed. The suitability of the proposed charts are investigated by means of extensive simulations.     

The covariance of the backward and forward recurrence times in a renewal process: the stationary case and asymptotics for the ordinary case

In a Poisson process, it is well-known that the forward and backward recurrence times at a given time point t are independent random variables. In a renewal process, although the joint distribution of these quantities is known (asymptotically), it seems that very few results regarding their covariance function exist. In the present paper, we study this covariance and, in particular, we state both necessary and sufficient conditions for it to be positive, zero or negative in terms of reliability classifications and the coefficient of variation of the underlying inter-renewal and the associated equilibrium distribution. Our results apply either for an ordinary renewal process in the steady state or for a stationary process.     

中国英语——世界英语中不可或缺的一部分

探讨了中国英语与洋泾浜英语、中式英语的区别,分析了中国英语的特征及存在的客观原因、可能性,中国英语在翻译中的现实意义。论述了中国英语对英语的影响及其中国英语的前景。     

伍尔夫意识流小说《达罗卫夫人》中的语法变异

意识流小说家善于把内心世界的混乱无序、朦胧的潜意识活动直接显示出来,揭示其内在的真实。这种创作不可避免地破坏了叙述的逻辑性,使语言支离破碎,破坏语言规则,导致了语言的变异,成了意识流小说主要的语言特征。意识流小说的语言在语体风格上独树一帜,在文学创作领域中占有着重要地位。本文以美国著名作家弗吉尼亚.伍尔夫的著作《达罗卫夫人》为线索,剖析了意识流小说的语言风格中语法变异。     

ФopTyHaTOB的“形式”观

作为俄罗斯"形式语言学派"创始人的ФортунатовФ.Ф.(佛尔图拿托夫)在语言学史上独树一帜,做出了许多开创性的贡献.ФортунатовФ.Ф.的"形式"观对后来的语言学,尤其是对语法学有着很现实和深远的影响.本文概括地介绍了ФортунатовФ.Ф.对词的形式的理解和他对词的形式的分类.同时由于ФортунатовФ.Ф.认为词、词组、句子的语法结构相似,应等同看待,所以本文对词组的分类也进行了简单的阐述.     

简阳河西话常用词语的音变问题

语流音变造成方言词语的外部形式发生很大变化,它主要发生在常用词中,基本类型有异化、同化、儿化、类化与合音。弄清其原形式,有利于对方言词汇的掌握。本文举例讨论了简阳河西话常用词语流音变的类型、条件、过程和原因,对于研究汉语语流音变同语音、词汇的关系具有积极意义。     

居住分异与社会距离

通过对一个新建社区的形成过程和居住现状的考察,分析了国内"居住分异"的社会分化现象。通过数据分析发现,居住分异以后,群体分化程度被强化了,它使居民之间的社会距离扩大、疏离感增强。这种状况不利于社会团结与和谐社会的建设。我国正处在城市化高速发展的进程中,如果没有明确的政策干预,任由房地产市场按照这样的情况发展下去,居住分异与社会距离问题会变得更加严重。     

关于渭河流域实施排污权交易制度的立法建议

从相关立法看,对渭河流域水污染的治理主要采取了传统的行政方式。为提高渭河水污染治理效率,促进陕西经济社会的可持续发展,有必要借鉴美国和我国上海、江苏等地比较成熟的做法,采用市场的方法即排污权交易来治理渭河流域水污染,这有利于促进企业技术革新,降低整个社会的治理成本,比单纯的行政方法更为迅速和有效。因此,应进行地方立法,规定可交易污染物的范围、排污权的初始分配方式、交易的程序等,以规范排污权交易市场;同时,确定渭河的环境容量总量以确定可供分配的指标,构建信息平台以降低交易费用及保障公民的知情权。     

语篇衔接与英语习得程度调查分析

通过对大学非英语专业学生的英语议论文写作中使用的语篇连接词进行统计分析,探讨学习者语篇衔接意识和能力与英语习得程度的关系。研究结果发现:1)学习者使用连接词的意识和能力与他们的英语习得程度有关系;2)英语习得程度好的学习者与程度差的学习者所使用的连接词在总数和类别数量上有显著差异;3)在议论文体中所使用的连接词存在单一的特点。