再从轻动词角度谈使役结构

使役结构在英汉语句法结构中举足轻重,历来受到语言工作者的重视,不少学者尝试用轻动词理论来解释,但各家看法不一.轻动词v由Larson最先提出,经Chomsky完善发展.乔氏认为轻动词v是没有语义的纯句法功能范畴,所以表示使役含义的“make”等词以及“-ify”等词缀不属于轻动词.通过为三种类型的使役结构——分析型、形态型、词汇型使役结构指派新的树形结构,进一步从并集对称合并与序偶非对称合并角度解释分析型使役结构不移位以及形态型、词汇型使役结构移位现象.     

Joint regression modeling for missing categorical covariates in generalized linear models

Missing covariates data is a common issue in generalized linear models (GLMs). A model-based procedure arising from properly specifying joint models for both the partially observed covariates and the corresponding missing indicator variables represents a sound and flexible methodology, which lends itself to maximum likelihood estimation as the likelihood function is available in computable form. In this paper, a novel model-based methodology is proposed for the regression analysis of GLMs when the partially observed covariates are categorical. Pair-copula constructions are used as graphical tools in order to facilitate the specification of the high-dimensional probability distributions of the underlying missingness components. The model parameters are estimated by maximizing the weighted log-likelihood function by using an EM algorithm. In order to compare the performance of the proposed methodology with other well-established approaches, which include complete-cases and multiple imputation, several simulation experiments of Binomial, Poisson and Normal regressions are carried out under both missing at random and non-missing at random mechanisms scenarios. The methods are illustrated by modeling data from a stage III melanoma clinical trial. The results show that the methodology is rather robust and flexible, representing a competitive alternative to traditional techniques.     

违章建筑背后的理性逻辑来自厦门市城中村的人类学调查和思考

以人类学主位研究为视角,厦门城中村实地调查为基础,对私房建筑（违章建筑）的投资行为进行深入描述和分析,发掘城中村强建、乱建以及建筑物异化、相互模仿等社会现象背后的理性逻辑,从而加深我们对违章建筑形成的理解,反思以往对违章建筑研究的片面性。