教育行动研究与在职外语教师的专业发展

教育行动研究作为一种解决现实课堂教学问题的实践方法和特殊的教师教育方法正受到越来越多的国内外教育研究者的关注。它倡导教师即研究者通过对自己课堂中的教学现象进行考察和研究并从中获取知识,改进教学质量。教育行动研究与教师专业发展密切相关。教育行动研究可以改进教学质量,提高教学水平,帮助在职教师重建知识体系,促使教师向专家型教师转化,是在职外语教师专业发展的可行的、有效的途径。     

佛山目标产业体系的抉择与逼近──兼论利用外资优化佛山产业结构

分析了区域裂变后的佛山产业体系发展的现状，并结合佛山未来的经济发展战略，勾勒出佛山目标产业体系，同时提出了以外资的利用作为优化佛山产业体系动力源的对策思路。     

世纪之交屈原研究的回顾和展望──'99岳阳两湖屈原与楚文化研讨会综述

综述了参与’99湖南岳阳两湖屈原与楚文化学术研讨会的专家学者的主要研究成果,介绍了有关世纪之交屈原研究的回顾与展望方面的成果。     

冯雪峰论:“修正主义文艺“批判运动人物检讨(之一)

冯雪峰是“修正主义文艺”批判运动第一阶段（ １９５６～ １９６２）主要的批判对象．作 为唯一的参加过长征的左翼文艺理论家,冯雪峰于１９５７年遭遇清算,除了他那不合时宜的革命 现实主义理论的启蒙倾向,还有一个重要的原因,就是１９世纪３０年代已然形成、长期以来没 能解决的宗派主义从中作祟．     

教育国际化及高校外事工作的目标定位

从经济全球化、国家软实力建设、教育经济、校本建设四个维度,阐述我国教育国际化及高校外事工作所承载的社会发展意义与担负的历史使命,并将上述四个维度作为参照系,确定了高校外事工作应有的目标取向与定位。     

悲剧的现代体验——徐志摩小说创作论

徐志摩区分出了不同层次种类的情,其中朝向大自然的热情最为显明。其小说呈现了人类遭遇现代后的搏斗的体验,反映了日常生活的残酷性和非人性,意在维护情爱的理想,为感情张目;志在揭示平凡生活中的摩擦,不厌其烦地制造习常和平中的悲剧,展现生活中的压抑和痛苦。     

Parameter estimation of nonlinear mixed-effects models using first-order conditional linearization and the EM algorithm

Nonlinear mixed-effects (NLME) models are flexible enough to handle repeated-measures data from various disciplines. In this article, we propose both maximum-likelihood and restricted maximum-likelihood estimations of NLME models using first-order conditional expansion (FOCE) and the expectation–maximization (EM) algorithm. The FOCE-EM algorithm implemented in the ForStat procedure SNLME is compared with the Lindstrom and Bates (LB) algorithm implemented in both the SAS macro NLINMIX and the S-Plus/R function nlme in terms of computational efficiency and statistical properties. Two realworld data sets an orange tree data set and a Chinese fir (Cunninghamia lanceolata) data set, and a simulated data set were used for evaluation. FOCE-EM converged for all mixed models derived from the base model in the two realworld cases, while LB did not, especially for the models in which random effects are simultaneously considered in several parameters to account for between-subject variation. However, both algorithms had identical estimated parameters and fit statistics for the converged models. We therefore recommend using FOCE-EM in NLME models, particularly when convergence is a concern in model selection.     

A Simulation Study of Predicting Flush Date

For Canada's boreal forest region, the accurate modelling of the timing of the appearance of aspen leaves is important to forest fire management, as it signifies the end of the spring fire season that occurs after snowmelt. This article compares two methods, a midpoint rule and a conditional expectation method used to estimate the true flush date for interval-censored data from a large set of fire-weather stations in Alberta, Canada. The conditional expectation method uses the interval censored kernel density estimator of Braun et al. (2005 Braun , J. , Duchesne , T. , Stafford , J. E. ( 2005 ). Local likelihood density estimation for interval censored data . Canadian Journal of Statistics 33 : 39 – 60 .[Crossref], [Web of Science ®] , [Google Scholar]). The methods are compared via simulation, where true flush dates were generated from a normal distribution and then converted into intervals by adding and subtracting exponential random variables. The simulation parameters were estimated from the data set and several scenarios were considered. The study reveals that the conditional expectation method is never worse than the midpoint method, and that there is a significant advantage to this method when the intervals are large. An illustration of the methodology applied to the Alberta data set is also provided.     

A strong law of large number for negatively dependent and non identical distributed random variables in the framework of sublinear expectation

Abstract

In this article, in the framework of sublinear expectation initiated by Peng, we derive a strong law of large numbers (SLLN) for negatively dependent and non identical distributed random variables. This result includes and extends some existing results. Furthermore, we give two examples of our result for applications.     

An exact test for nbue class of survival functions

Let F(x) be a life distribution. An exact test is given for testing H₀ F is exponential, versusH₁Fε NBUE (NWUE); along with a table of critical values for n=5(l)80, and n=80(5)65. An asymptotic test is made available for large values of n, where the standardized normal table can be used for testing.