三种样本相关系数之内在联系

论证了积差相关系数、点二列相关系数和等级相关系数等三种样本相关系数,都是同一概念和公式的不同应用和表现.所述的三种相关系数的使用条件要从它们的原始来源中来理解和要求.     

浅谈英语专业二外法语教学

本文介绍了法语的特点及英语专业选择二外法语的原因,针对教学中面临的问题,提出了自己的观点及解决的方法,着重阐述了英法比较的方法。     

一种多路模数转换装置的设计

介绍了模拟量输入系统的基本过程,完成了模拟量转换成数字量输入系统的硬件接口设计和程序设计.     

On Sample-Size Calculations for Precise Contrast Analysis in ANCOVA

The analysis of covariance (ANCOVA) is a useful statistical procedure that incorporates covariate features into the adjustment of treatment effects. The consequences of omitted prognostic covariates on the statistical inferences of ANCOVA are well documented in the literature. However, the corresponding influence on sample-size calculations for precise interval estimation has not been fully evaluated. This article aims to explicate the deficiency of approximate methods for ignoring the stochastic nature of covariate variables and to present exact approaches for precise interval estimation of treatment contrasts under the assumption that the covariate variables have a joint multinormal distribution. The desired precision of a confidence interval is assessed with respect to the control of expected half-width and to the assurance probability of interval half-width within a designated value. Numerical appraisals show that the suggested approaches outperform the approximate formulas for the two precision considerations.     

法国教师教育的改革现状及其借鉴

法国于1989年着手立法并全面革新师资培养的体制,以推动中小学教师合流及师资培育管道多元化的新制。教师培训学院（les instituts universitaires de formation des maltres,简称IUFM）于1991年诞生。随着教师培训学院的建立,到2005年提出将教师培训学院并入大学,再到2010年末起正式推动实施教师资格硕士化方案,这20年来法国教师教育经历了一场制度上和教育上的变革。     

哲人与神父的友谊——从《诸神渴了》的公民宗教谈起

伊壁鸠鲁派哲人勃娄陀与天主教神父龙格玛尔、雅各宾分子甘墨兰关于宗教问题的不同看法是小说的重心。勃娄陀在看清了公民宗教的弊端后选择了与受到新政权迫害的天主教神父缔结友谊,哲人在传统天主教与雅各宾派公民宗教之间的身位得以彰显。     

案例教学法在高等师范院校《英语教学法》教学中的应用

随着基础教育新课程改革和义务教育经费保障机制改革的全面实施,基础教育教师的素质及专业发展,已成为社会各界关注的焦点。高等师范院校《英语教学法》在师范教育课程设置中占有重要地位,许多师范院校正在进行师范课程的整改,以培养具有先进教学理念的创新型教师。应采用案例教学模式,选取合适的教学案例进行课堂分析、讨论与实践,通过探究性学习方式的运用,使英语师范生从表面层次的理论知识学习向深层次上的教学理念的形成,进而为其教师职业技能的发展奠定良好的基础。     

Offering Adequate Pedagogical Progression via Mobile Equipments—— Experiment of a French Engineering School

Students may enter our 5-year engineering school in France at two levels ： first and third year. However, due to their quite different backgrounds （ this is especially true for third year students ）, we need to provide newcomers with a 6-week training period during which they follow classes in the fields where they particularly feel weak. Unfortunately, depending on the student＇s background, this is not always possible to bring him/her to the expected level. Another aspect one needs to mention is that these students may not have the same weaknesses in a given field. However, for economical reasons, those classes follow a uniform program as it is not feasible to provide a customized progression. In this paper we discuss how to redesign a mathematics course so as to offer tailored exercise sequencing. Groups of 20 students could then draw their exercises from an intranet database according to their previously completed work, try to solve it by themselves, request additional hints and even ask for some direct help from the teacher. Such a database is currently under development. If it turns out several students stumble against the same difficulty the teacher could show the whole class room how to solve it using the digital projector. This project goes one step further than our initial mobile education project （ 2003 - 2004 ）. Until recently, we had used the equipment in a unique direction, from the instructor toward the students. Here, in this new project we are focusing on the whole loop in order to offer a more adequate （personalized） pedagogical progression ： from the student to the teacher （when the tablet PCs are monitored by the teacher）, and back toward the students （when a direct help is provided by the teacher）.     

铝基复合材料烧结试验中试样制备及试验方法研究

铝基复合材料烧结试验所用试样的制备方法采用常用的粉末冶金法,它的制备方法包括粉末预处理,配料,混料,冷压成形,制样等.但每一个工序都与传统的粉末冶金法有所不同,具有其独特性.原位观察法进行烧结试验也为课题组独创.这些研究为铝基复合材料烧结工艺研究提供了试验依据.     

Fault diagnosis model based on fuzzy support vector machine combined with weighted fuzzy clustering

A fault diagnosis model is proposed based on fuzzy support vector machine (FSVM) combined with fuzzy clustering (FC).Considering the relationship between the sample point and non-self class,FC algorithm is applied to generate fuzzy memberships.In the algorithm,sample weights based on a distribution density function of data point and genetic algorithm (GA) are introduced to enhance the performance of FC.Then a multi-class FSVM with radial basis function kernel is established according to directed acyclic graph algorithm,the penalty factor and kernel parameter of which are optimized by GA.Finally,the model is executed for multi-class fault diagnosis of rolling element bearings.The results show that the presented model achieves high performances both in identifying fault types and fault degrees.The performance comparisons of the presented model with SVM and distance-based FSVM for noisy case demonstrate the capacity of dealing with noise and generalization.