C++Builder调用Matlab工具箱技术及其应用

本文利用Matlab神经网络工具箱建立教学质量评价的BP网络模型,结合Borland C Builder自身具有的丰富可视化组件和数据库管理功能,通过ActiveX和BDE技术进行混合编程,来做出科学化的评价结果。     

浅谈.NET Framework中的异步编程

异步编程是.NET Framework中的核心技术,其主要思想是在后台执行复杂任务,从而避免阻塞应用程序的用户交互。本文较详细地论述了异步编程的设计模式和应用。     

基于ASP.NET应用程序的规划与设计

对于大型ASP.NET系统来说,一个好的应用程序规划和设计可以事先预测在进入项目的编码阶段之前面临的主要障碍,这样可以减少编写实际代码的时间,并且还可以减少遇到的错误和障碍的数量。本文介绍了如何使用Microsoft ASP.NET和Microsoft Visual Studio.NET来设计、实现和部署典型的Web应用程序,以探讨实际应用程序创建实践中最常见的几个因素。文章以一个知识库Web应用程序为例,详细描述了ASP.NET应用程序的规划与设计过程。     

二元函数极值定理的一种新证法

本文利用二元连续函数的局部保号性及正（负）定矩阵理论，给出了二元函数极值充分条件定理的一种新证法．     

利用Autolisp和DCL语言开发零件序号标注工具

在AutoCAD中标注零件序号是—件很烦琐的工作。介绍利用Autolisp和DCL语言对AutocAD进行二次开发，实现零件序号的自动标注的思路及程序结构，利用该工具可以快速方便地标注零件序号。     

Extreme value distributions of mixing two sequences with the same MDA

Suppose {Xi,i≥1} and {Yi, i≥1} are two independent sequences with distribution functions and , respectively. Zi,n is the combination of Xi and Yi with a probability for each I with 1≤ i≤n. The extreme value distribution GZ(x) of this particular triangular array of the i.i.d. Random variables Z1,n,… Z2,n, Zn,n is discussed. We found a new form of the extreme value distributions i)ΦAα1(x)Φα2 and ii) ψAα(x)ψα2(x)α1<α2), which are not max-stable. It occurs if FX and FY belong to the same MDA(Φ) or MDA(Ψ).     

Extreme value distributions of mixing two sequences with different MDA''s

Suppose {Xi, i≥1} and {Yi, i≥1} are two independent sequences with distribution functions FX(x) and FY(x), respectively. Zi,n is the combination of Xi and Yi with a probability pn for each i with 1≤i≤n. The extreme value distribution GZ(x) of this particular triangular array of the i.i.d. random variables Z1,n , Z2,n ,…, Zn,n is discussed. We found a new form of the extreme value distribution (A(ρx)(ρx)(0<ρ<1), which is not max-stable. It occurs if FX(x) and FY(x) belong to the same MDA(ρ). GZ(x) does not exist as mixture forms of the different types of extreme value distributions.     

高职院校电子信息专业《C语言程序设计》教学模式的探索

《C语言程序设计》作为高等院校的公共基础课之一,是一门实践性比较强的课程。对于高职院校的学生来说,内容相对抽象复杂,在教学中发现不少问题。文章针对高职电子信息专业的C语言教学模式进行了探讨,采取一些有效的教学方法。经教学实践发现,这些教学方法不但大大提高了学生动手编程的能力,也提高了教学效果。     

Active Learning through Modeling: Introduction to Software Development in the Business Curriculum*

Modern software practices call for the active involvement of business people in the software process. Therefore, programming has become an indispensable part of the information systems component of the core curriculum at business schools. In this paper, we present a model‐based approach to teaching introduction to programming to general business students. The theoretical underpinnings of the new approach are metaphor, abstraction, modeling, Bloom's classification of cognitive skills, and active learning. We employ models to introduce the basic programming constructs and their semantics. To this end, we use statecharts to model object's state and the environment model of evaluation as a virtual machine interpreting the programs written in JavaScript. The adoption of this approach helps learners build a sound mental model of the notion of computation process. Scholastic performance, student evaluations, our experiential observations, and a multiple regression statistical test prove that the proposed ideas improve the course significantly.     

求多元函数极值的二次型方法

利用二次型的理论,给出解决多元函数极值问题的一种方法.