语言学习策略理论与大学英语教学

语言学习策略是大学英语学习成败的一个关键因素。文章从语言学习策略培养的意义、原则、内容和方法几个方面探讨了大学英语教学中这一策略的具体实践。     

Learning activity sequencing in personalized education system

Personalized education provides an open learning environment which enriches the advanced technologies to establish a paradigm shift, active and dynamic teaching and learning patterns. E-learning has a various established approaches to the creation and sequencing of content-based, single learner, and self-paced learning objects. However, there is little understanding of how to create sequences of learning activities which involve groups of learners interacting within a structured set of collaborative environments. In this paper, we present an approach for learning activity sequencing based on ontology and activity graph in personalized education system. Modeling and management of learning activity and learner are depicted, and an algorithm is proposed to realize learning activity sequencing and learner ontology dynamically updating.     

An Empirical Study on Tangible Augmented Reality Learning Space for Design Skill Transfer

Tangible augmented reality (TAR) technology opens a novel realm which integrates the computer-generated elements into the real word. Its applications into design education have been explored with a limi-tation to this entire area. TAR offers an innovative learning space by merging digital learning materials into the format of media with tools or objects which are direct parts of the physical space. It is therefore conceived that such combination opens new perspectives in teaching and learning. This paper presented and evaluated one TAR system to improve the pedagogical effectiveness of experiential and collaborative learning process in urban design education. The results from the experiments were analyzed under a previously developed theoretical framework, which show that TAR can enhance the design activities in some collaborative work.     

基于综合特征的CBIR系统的设计与实现

目前CBIR系统采用单一特征进行图像检索的效果不是很理想.在单一特征进行图像检索的基础上,结合权值确定技术,提出了一种利用图像综合特征进行检索的方法,并在Visual C++ 6.0中实现了基于此方法的CBIR系统. 实验结果表明,该检索方法可行且在查准率上大大优于单一特征的检索方法.     

基于遗传算法优化的神经网络电子邮件信息分类器的研究

结合反垃圾邮件技术的研究,分析了电子邮件数字信息预处理中的特征选择法和将机器学习技术应用于数字信息分类器的方法.针对邮件信息特征向量庞大的问题,提出了GA-CHI特征选择法作为信息预处理,将复杂的邮件数字信息转变成易于机器学习处理的形式.基于BP神经网络电子邮件数字信息分类器,采用遗传算法来优化神经网络邮件数字信息分类器,以进一步提高对中文电子邮件的分类效果.通过对系统的实验分析表明:该文采用的方法能有效地实现对电子邮件数字信息的分类.     

大学生行使学习权利的教育价值

大学教学如何体现以学生为本,促进学生能动学习,提高教育教学质量是当前高校教育工作者所关注的问题。学生应行使学习权利中的“知情权”“参与权”和“建议权”,体现以学生为本、实现学生能动学习和提高教育教学质量方面的价值。行使知情权,构建以学生为本的教育教学平台;行使参与权,培养学生能动做事、做人和做学问的能力;行使建议权,在激励中实现教育教学质量的提高。     

浅析合作学习在中学英语教学中的应用

通过分析合作学习在中学英语教学中存在的问题,得出进一步提高中学英语合作学习效果的策略,即在合作学习中合理分组、明确责任,选择恰当的合作时机,充分发挥教师作为指导者的作用,课内、课外全程合作,完善合作学习评价机制等。     

大学英语词汇教学策略

词汇习得是语言习得的任务之一,而词汇学习的质量与词汇学习的策略密切相关。在大学英语词汇教学中,教师应充分发挥指导作用,帮助学生从音、形、义出发,了解相关的语音知识,词汇知识,掌握各种词汇习得技巧,并在此基础上充分发挥自己的想象力,进而提高词汇学习能力,促进其它方面的学习。     

X滤波自适应逆控制算法及在液压位置控制系统中的应用

针对非线性时变特性的液压位置伺服系统跟踪控制问题,基于自适应逆控制理论,提出X滤波液压位置自适应逆控制策略.对传统自适应滤波算法在X滤波结构下的不足,提出变换域变步长归一化最小方差算法.采用该算法对液压伺服位置系统进行了对象建模、在线逆建模及开环控制系统设计.仿真结果表明,X滤波液压位置自适应逆控制具有跟踪速度快、对参数摄动鲁棒性强等良好动态特性.     

基于嵌入式技术的温度控制箱系统设计

在Philips公司嵌入式ARM7 LPC2210硬件环境下,以ADS1.2软件开发环境,对温控箱采用基于单神经元自适应PID的控制方法。通过对实际温控箱系统进行的实验结果表明,这种控制算法学习速度快,动态响应时间短,系统具有较好的鲁棒性和自适应性。