建构主义理论与英语专业教学模式的改革

文章在借鉴建构主义理论主要观点的基础上，探讨了以建构主义学习理论为指导的英语专业教学模式改革的设想。     

Backfitting Random Varying-Coefficient Models with Time-Dependent Smoothing Covariates

Abstract.  In this paper, we propose a random varying-coefficient model for longitudinal data. This model is different from the standard varying-coefficient model in the sense that the time-varying coefficients are assumed to be subject-specific, and can be considered as realizations of stochastic processes. This modelling strategy allows us to employ powerful mixed-effects modelling techniques to efficiently incorporate the within-subject and between-subject variations in the estimators of time-varying coefficients. Thus, the subject-specific feature of longitudinal data is effectively considered in the proposed model. A backfitting algorithm is proposed to estimate the coefficient functions. Simulation studies show that the proposed estimation methods are more efficient in finite-sample performance compared with the standard local least squares method. An application to an AIDS clinical study is presented to illustrate the proposed methodologies.     

高校辅导员职业的专业划分问题研究

高校辅导员是否是一种职业，该不该划分专业，划分专业的标准是什么，具体由哪些专业构成，这些问题是高校辅导员专业化问题讨论中必须回答的问题。这些问题，有的理论界已有所探讨，但存在较大分歧，有的还未引起足够的重视。本文就此谈谈我们初浅的认识。     

LENGTH-BIASING, CHARACTERIZATIONS OF LAWS AND THE MOMENT PROBLEM

A positive random variable X with a finite mean has an induced length-biased law represented by Y, and Y is stochastically larger than X. An independent uniform random contraction of Y, UY, has the same law as X if and only if the latter is exponential. This property is extended to non-uniform contractions and a more general notion of length-biasing. The distributional equality of X and W leads to a functional equation for the moment function of X, which has either Infinitely many solutions or none. When U is constant, X can have a log-normal law, but it can also have laws with the same moment sequence as this log-nod law. The case where U has a certain beta, or generalized beta, law give t3 characterizations of generalized gamma laws, or to products of independent copies of them. This occurs even when these laws are not determined by their moment sequences.     

基于就业态势分析的交通运输专业人才培养思路调整方案

高校本科专业的就业发展态势反映了社会需求的变化趋势。高校专业教育的人才培养目标必须也只能与社会需求进行模糊的、大范围的对接。交通运输专业要实现这种对接,应当以综合交通运输理念为指导,强化在运输组织管理领域的传统优势,拓展运输经济、技术管理等专业内涵,按综合交通运输体系的要求修订人才培养目标,制定开放式的专业培养计划和网络化的课程体系,在实验、实习、毕业设计等环节强调职业化训练。     

构建独具高职特色的俄语专业课程结构

随着我国经济多元化趋势的日益增强,社会对人才的需求也逐步呈现出多类型的特点。作为直接为社会培养和输送人才的高等教育也发生了很大变化,产生了新的教育类型—高等职业教育。高等职业教育在教学目的、人才培养模式、教学过程等方面均有自己的特点。对于高职院校的俄语专业来说,它是职业教育领域的人文科学,不能套用普通高等院校的固有模式,而现有高职院校俄语专业尚未形成科学实用的教学和人才培养模式。因此,为了提高其教学水平和人才培养质量,必须进行教学改革,构建独具高职特色的课程结构。     

音系层、词汇语法层与语义层三位一体的英语教学

韩礼德的系统功能语法直接和间接地激发了许多新的教学理论和方法的产生。英语教学中应尝试把该语法的六个核心思想之一的“层次的思想”与英语词汇教学联系起来,通过音系层、词汇语法层和语义层三位一体的英语教学法提高学生的英语综合知识和技能。     

基于互信息的功能磁共振图像配准

互信息作为衡量两幅图像配准的相似性测度函数,当两幅图像配准时,互信息达到最大值。该文提出了基于互信息脑功能磁共振图像配准新方法,采用了无需计算梯度的Powell直接搜索算法,并通过多分辨的方式加快了图像配准速度。磁共振的配准实验证明,互信息法能准确地实现多模态医学图像的配准,并且能达到亚像素的精度。     

植物功能基因组学手段

综述了近几年发展起来的几种植物功能基因组学手段，对这些方法的优缺点作了比较．并讨论了植物功能基因组学的发展前景。     

论电子商务案例教学模式与能力培养

电子商务专业的培养目标是造就电子商务人才,而为社会所需要的电子商务人才所应具备的不仅是理论知识,更重要的是知识运用能力,因此理论知识的掌握和考试过关都不是教育的最终目的.电子商务专业案例教学模式实际上是对电子商务专业教学方式尤其是培养模式的探索,它通过案例的索引,增加专业知识的实用性和综合性,培养学生实际技能与综合能力,增强就业竞汉争力.