对欧洲数字视频广播标准DVB-T中OFDM技术的研究

介绍了DVB-T（欧洲数字视频地面广播标准）及OFDM技术的原理,针对DVB-T中的OFDM关键技术细节进行进一步探讨.在Simulink上进行仿真,验证了DVB-T中的OFDM技术具有抗多径能力强,频谱利用率高的特点.     

求解矩阵Penrose广义逆的混合智能算法

有效求解矩阵Penrose广义逆是一个困难的问题．首先将求解Penrose广义逆转化为求最小极值问题,结合粒子群算法和差分算法的优点,设计了混合智能算法．仿真实验结果表明：混合智能算法求解Penrose广义逆是有效的和可行的．算法易于计算机实现,计算精度高．     

Hilbert‘s Sixteenth Problem and Its Generalization

This paper deals with Hilbert‘s 16th problem and its generalizations.The configurations of all closed branches of an algebraic curve of degreee n are discussed.The maximum number of sheets for an algebraic equation of degree n and the maximum number of limit cycles for a planar algebraic autonomous system are achieved.The author also considers different generalizations and some related problems.     

Discriminating Quantity: New Points for Teaching Children with Down Syndrome About Number?

ABSTRACT

The focus of much mathematics teaching has been on the acquisition of counting, an area where children with Down syndrome can experience particular difficulties. Research with typically developing children has highlighted how early awareness of quantity provides a strong platform for the acquisition of later mathematical skills and programmes of early intervention have been introduced. Many of these studies are embedded in the work and traditions of developmental and cognitive psychology and can be difficult to access. Consequently, this is an area that has been largely ignored in the curricula of children with Down syndrome. This paper seeks to make this literature more available. It systematically reviews previous research with children with Down Syndrome on these early foundations. It considers seemingly contradictory findings in the light of differences in tasks, their presentation and instructions, and the responses required, in order to draw conclusions and reflect on the implications for teaching and learning. Some of these propositions are in contrast to existing practices and call for further research to test their effectiveness.     

关于Lucas数的一个程序解

在分析Lucas数列{Ln}的有关性质及相关规律的基础上定义新的广义Lucas数，利用TURBOC语言，给出了Lucas数及广义Lucas数的一个程序解，从而使其在组合数学以及工程技术中的应用范围进一步拓宽。     

不完备信息系统的矩阵约简算法

粗糙集理论是用来解决不确定性的新的数学工具，而知识约简是粗糙集理论中一个重要的研究课题。J．W．Guan等提出了信息系统下的矩阵算法。章则是进一步讨论不完备信息表下的矩阵约简算法，实例表明该算法是有效的，具有一定的应用价值。     

浅谈对《MATLAB程序设计》课程基础教学内容的思考

本文简要介绍了MATLAB软件和《MATLAB程序设计》课程,结合笔者的教学实践,对程序设计的重要性给出了自己的认识,最后从四个方面对《MATLAB程序设计》课程的基础教学内容进行了探讨,并且给出了自己提高学生程序设计的途径。     

编码自动生成的一个实例

本文根据自治区对全疆中小学教师进行专业基础知识水平的测试的要求，给出了用visual foxpro 6．0数据库管理系统编制的实现考生准考证号的编排的程序段。     

实正定矩阵的若干判定方法

运用高等代数中一系列矩阵论的相关知识，给出了实对称正定矩阵的若干判定方法，对一般实矩阵正定的性质和判定作了初步的讨论和研究，得到了一般实正定矩阵的几个重要性质和判定定理。     

浅析复数在数学分析中的应用

论述了复数在数学分析中的具体应用