高校远程教学模式探析

信息技术的迅速发展，促进现代远程教育的教学手段和教学模式不断改革。由于我国许多地区的学校互联网接入条件比较差，造成使用费用较高，从而影响了互联网信息资源的有效传播，以低成本运行网络为前提讨论远程教学模式。     

中国省际全要素能源效率变动分解——基于环境约束条件下的研究

将二氧化碳排放作为非期望产出,基于Malmquist-Luenberger生产率指数,测算了2001-2009年资源环境约束下中国各省份的全要素能源效率,并将其分解为技术进步、纯技术效率变动和规模效率变动因子。研究结果表明,纯技术效率和规模效率的恶化是中国全要素能源效率下降的主要源泉;省际全要素能源效率增长率在省际间的分布差异较大,且主要源于技术进步的省际差异;在技术进步的推动下,全要素能源效率增长率呈现"先上升再下降"的变化趋势。     

Constructing optimal projection designs

ABSTRACT

The early stages of many real-life experiments involve a large number of factors among which only a few factors are active. Unfortunately, the optimal full-dimensional designs of those early stages may have bad low-dimensional projections and the experimenters do not know which factors turn out to be important before conducting the experiment. Therefore, designs with good projections are desirable for factor screening. In this regard, significant questions are arising such as whether the optimal full-dimensional designs have good projections onto low dimensions? How experimenters can measure the goodness of a full-dimensional design by focusing on all of its projections?, and are there linkages between the optimality of a full-dimensional design and the optimality of its projections? Through theoretical justifications, this paper tries to provide answers to these interesting questions by investigating the construction of optimal (average) projection designs for screening either nominal or quantitative factors. The main results show that: based on the aberration and orthogonality criteria the full-dimensional design is optimal if and only if it is optimal projection design; the full-dimensional design is optimal via the aberration and orthogonality if and only if it is uniform projection design; there is no guarantee that a uniform full-dimensional design is optimal projection design via any criterion; the projection design is optimal via the aberration, orthogonality and uniformity criteria if it is optimal via any criterion of them; and the saturated orthogonal designs have the same average projection performance.     

网络时代的高校师生关系与校园网络群体性危机事件

网络资源的共享部分消解了教师知识权威的角色,网络的平等性造就了教师的去权威化和泛权威化的并存,网络师生的互动交流途径既有利又困惑;导致亲近关系与疏离关系并存,且疏离关系偏大。因此,网络隐匿性潜藏着教师难以监管,有可能“一引而发”的校园网络群体性危机事件,努力再造亲近关系以淡化疏离关系,肯定有助于押制校园网络群体性危机事件的突发性机率。     

文化适应模式理论及外语教学

由Schumann创建于20世纪70年代的文化适应模式理论从社会环境因素和学习者个人因素的视角对第二语言习得的动力机制及学习者语言的洋泾浜现象作出了独到的解释,为学习者深入了解第二语言习得规律,创造有利的内外部环境提供了理论依据.本文着重阐述了文化适应模式理论的基本内容,分析了其适用的基础,指出文化适应模式理论同样可用于分析我国的外语教学.     

齿轮齿距累积误差计算机程序设计

运用齿轮齿距累积误差的计算机程序设计的原理、方法和计算机程序,可快速、准确地进行数据处理,直接打印出齿轮的齿距累积误差.本文对此进行了介绍.     

远程教育、多媒体技术与现代英语教学

现代远程教育与多媒体计算机辅助语言教学(MCALL)已是当前国内外现代外语教育的一个重要组成部分,成为英语教师改革教学方法、改进教学手段、提高教学质量的首选途径。它不仅丰富了教学手段,提高了教学效益,而且对教师的教学观念的更新、自身素质的提高与完善起到了积极的推动作用。     

现代远程教育学制探讨

分析了现代远程教育的学分制及网上学员的特点 ,提出了学分制的运行办法 ,通过实践及数据分析 ,指出了今后的改革办法和发展趋势