人体运动图像边缘处理     

邹亮畴  范毅方  袁支润  丁焕香 《广州体育学院学报》2004,24(2):35-37

根据人体运动图像的特点，引用图像层的平滑处理和图像层的边缘处理获得了较好的人体运动边缘图像，通过轮廓跟踪能较好地提取了人体运动图像边缘，为研究人体运动图像质心定位作好了准备。同时也为处理人体运动图像提供了一种新的方法。  相似文献   

Exploring mechanisms of rapid automatized naming to arithmetic skills in Chinese primary schoolers     

Yiji Wang  Xiaolin Ye  Ciping Deng 《Psychology in the schools》2020,57(4):556-571

Rapid automatized naming (RAN) is associated with children's arithmetic performance, which is multifactorial by nature and consists of arithmetic fluency, arithmetic procedure, and word problems. Yet, it is unclear whether RAN can predict all key aspects of arithmetic skills independently and what cognitive mechanisms may explain this relation. Using a sample of Chinese primary school students (N = 170), results showed that while RAN was associated with all key aspects of arithmetic skills, the relations of RAN–arithmetic procedure and RAN–word problems may be dependent on that of RAN–arithmetic fluency. Supporting the processing speed hypothesis, results further suggested that processing speed may underlie the relation between RAN and arithmetic performance. Findings made unique contribution to understanding the effect of RAN on arithmetic performance and cognitive mechanisms that may underpin this association in the context of Chinese culture.  相似文献   

Effects of fluency training on reading competence in primary school children: The role of prosody     

《Learning and Instruction》2017

Reading fluency defined as speed, accuracy, and prosody, is a critical component of reading development. The purpose of this research was to compare the efficacy of automaticity versus prosody programmes on reading comprehension. The study included 122 Spanish primary-school children (74 second and 48 fourth graders), randomly assigned to one of three groups: (a) automaticity training, which consisted of repeated reading with a focus on speed and accuracy plus phonological and orthographic awareness activities; (b) prosody training, which consisted of repeated reading with a focus on expressiveness plus prosody sensitivity activities; and a (c) ‘no treatment’ control group. Multiple measures were used to determine pre-post training performance in reading fluency—automaticity and prosody—and comprehension. Prosody training proved superior to automaticity training in promoting automaticity and prosody. Prosody and automaticity training in fourth graders resulted in superior sentence comprehension compared to controls. The importance of prosody for reading development in primary school is discussed.  相似文献   

二项展开式中项的几个性质     

姜学杰 《甘肃高师学报》2011,16(5):66-67

通过构造二项式项三角形和项平行四边形,揭示了项的递推关系、项三角形中的三向和、项平行四边形中项的对称性规则及项的有关微分性质.  相似文献   

有符号数的补码速算方法研究     

段金蓉  张心心 《绵阳师范学院学报》2006,25(5):122-123

在计算补码的传统方法基础上,提出了一种快速准确的速算方法,并对其原理进行分析,给出了相应的例子说明,最后给出了该速算方法实现补码直接转换成原码的应用。  相似文献   

两个著名不等式的统一证明     

姜天权 《南阳师范学院学报》2005,4(3):20-22

首先证明了数b1，b2，…，bn的一个加权平均不等式链Hn(b,P)≤(Pn ∑Pibi)/(Pn ∑Pi/bi)≤Gn(b,P)≤[∑Pibi/(1 bi)]/[∑Pi/(1 bi)]≤An(b，P)，用这个结果证明了名的王-王不等式和ky Fan不等式链Hn(b,P)/Hn(1-b,P)≤Gn(b,P)/Gn(1-b,P)≤An(b,P)/An(1-b,P)。  相似文献   

浅议算法在程序设计课程中的核心作用     

雍全明 《鄂州大学学报》2005,12(3):25-27

许多教师在计算机程序设计课的教学中，很注重对语法问题的讲解，而对算法的重要性体会不深，在平时教学中也没有时刻地把握这一点。该文针对这个问题，提出要在课堂教学中注意对学生逻辑思维能力的培养，对同一问题进行多种算法之间的比较，并分析数据结构对算法的影响。强调同一算法可以用不同的语言工具来实现。  相似文献   

在显示器上描绘直线的要求和几种直线生成算法之比较     

马振新 《甘肃广播电视大学学报》2001,11(4):48-51

在显示器上描绘直线的基本要求和几种算法。  相似文献   

试论英语词汇和语法的相互关系     

朱琳 《云南电大学报》2006,8(1):51-55

在传统的英语教学中，语法和词汇被认为是相互独立的部分，但一些新的理论提出了词的组合模式（句型结构）显示了词汇和语法两者可以进行有益的结合，所有的词都有它的句型结构，且有相同句型结构的词，有相似的词义。学习者在学习中应注意词汇与语法学习的不可分割性，并在学习中注意语言学习的四个重要方面：理解、准确、流畅及灵活性。  相似文献   

Windows环境上机考试自动评分算法的研究   总被引：1，自引：0，他引：1  

赵虎  王丽萍 《教育前沿(综合版)》2006,(3)

针对Windows平台上机操作考试,阐述了通过面向对象、OLE自动化技术和VBA嵌入式编程实现计算机自动评分的策略,及各种常见操作类型的自动评分算法实例。  相似文献