金融产品创新绩效之风险作用路径的结构方程模型分析

针对利用调查问卷收集的我国金融产品创新的资料,使用结构方程模型的统计分析方法,考察了开发过程、营销因素、市场环境、组织管理和风险管理等关键风险因素影响创新绩效的风险作用路径和效果,以指导我国金融机构对产品创新风险进行有效控制.     

车灯线光源的计算

本文给出了“2002年全国大学生数学建模竞赛”中关于“车灯线光源”一题的解决方案。首先,通过同一球面上两球冠面积之比,解决了车灯中直射光与反射光的能量之比问题;其次,通过建立锥面方程,求出了线光源上任意一点发出的直射光在测试屏上的亮区,进而解决了整个线光源在测试屏上的直射光的亮区问题;最后,求出了线光源上任意一点发出的光线经过旋转抛物面上截线圆反射后,在测试屏上留下的反射光的亮区,然后使用数学软件绘出了整个线光源在测试屏上反射光的亮区。     

Language-related longitudinal predictors of arithmetic word problem solving: A structural equation modeling approach

We investigated the longitudinal relations between cognitive skills, specifically language-related skills, and word-problem solving in 340 children (6.10–9.02 years). We used structural equation modeling to examine whether word-problem solving, computation skill, working memory, nonverbal reasoning, oral language, and word reading fluency measured at second grade were associated with performance on measures of word-problem solving in fourth grade. Results indicated that prior word-problem solving, computation skill, nonverbal reasoning, and oral language were significantly associated with children’s later word-problem solving. Multi-group modeling suggested that these relations were not significantly different for boys versus girls. Implications of these findings are discussed.     

数学建模与高职学生综合能力培养

21世纪中国高等教育的目标是为社会培养出具有综合素质的复合型人才。高职院校更应注重学生综合能力的培养。本文通过大学生数学建模实践以及数学建模特点分析,指出数学建模能提高高职学生的综合能力,促进高职人才的培养。     

Trends in education excellence gaps: a 12-year international perspective via the multilevel model for change

A recent study in the USA documented the existence and growth of “excellence gaps” among students. These gaps are similar to the minimum competency achievement gaps that proliferate in policy discussions in many Western countries, but excellence gaps focus on the highest level of achievement rather than minimum competency. We extend this research using an international approach, data from the most recent Trends in International Mathematics and Science Study, and a multilevel model for change to examine excellence gap trends with specific emphasis on sex and immigrant status of the student. At an international level, sex-based findings are encouraging. Specifically, we found evidence of shrinking sex-based excellence gaps in both science and mathematics. With respect to immigrant status and excellence gaps, small gaps in the proportion of advanced achievers persist over time. In the context of large demographic changes worldwide, we argue that these findings are generally encouraging.     

传统制图课程融入三维CAD建模的教学探析

针对是否要将三维CAD建模融入工程图学教学中的问题,阐述了将三维CAD建模引入制图课程的背景,归纳了三维CAD引入制图教学中的三种教学模式,并比较了各自的形式和特点,同时分析了三维CAD与传统制图教学融合存在问题。最后指出在将三维CAD建模引入传统制图教学中时,应该着重解决传统制图教学内容与现代三维CAD建模融合与呼应的不足,使得传统制图教学与三维CAD建模有机结合。     

用3ds max+Vray制作室内效果图的速度与品质问题探讨

通过对影响3ds max+Vray软件进行图像渲染时的渲染速度与品质因素进行分析,提出提高渲染速度的方法;对软件设计绘图流程、软件组合建模以及素材库文件运用的分析,提出提高软件绘图速度的方案;最终实现在保证室内效果图渲染品质不变的条件下提高效果图的制作速度,并通过实例比较,在不影响图像渲染输出品质的情况下,发现采用软件组合建模和各类素材库综合运用,比传统方法提高绘图速度1倍左右;在渲染出图阶段,使用光子文件可提高渲染速度1倍左右。     

3ds Max中低多边形模型的创建方法研究

在三维游戏与虚拟现实等交互式的三维应用环境中,为了保证程序的流畅运行,其三维建模方式一般采用低多边形模型的方式。介绍了三维模型的分类,探讨了3ds Max中低多边形模型的创建方法,介绍了几种常用的优化模型面数的方法,对于实际工作具有较强的指导意义。     

应用型本科高校概率统计课程教学方法探讨

概率统计课程是应用型本科高校理工科学生必修课程之一,具有很强的理论性和应用性。文章主要探讨了应如何加强课程教学内容的改革,注重概率统计思想讲授,加强实践环节的教学,如何结合实例将数学建模思想融入到概率统计教学中,培养学生的应用和创新能力。     

简议数学建模促进大学生数学思维的提升

介绍数学建模的起源,给出了建立一个抽象数学模型的具体步骤,阐述了数学建模对于数学教学的促进作用,同时也对数学建模启发大学生数学思维,提高大学生专业写作水平做出了相应的论断。