用Mathematica绘制二维分形图

为获得绘制二维分形图的简单方法,利用Mathematica软件的数值计算功能、符号运算功能和图形程序设计功能,以简单的程序实现了迭代分形算法和逃逸时间算法,成功绘制了Von Koch曲线、分形树枝、Mandelbrot集等分形图,给出了相应的Mathematica源代码,体现了Mathematica软件在实现分形算法方面的优越性,并提出了绘制复杂分形图的新方法.     

软件Mathematica10.2在曲线绘制和弧长计算上的应用

Mathematica10.2新功能的图形离散化命令Discretize Region和弧长计算命令Arclength使曲线绘制和弧长计算上更加简洁,本文结合该软件其他命令,通过实例说明和分析该软件在曲线绘制和弧长计算上的应用。     

用Mathematica软件建立分析化学中的四大类滴定曲线

建立和讨论分析化学中的四大类滴定曲线是化学分析原理的核心内容,传统都是通过溶液中的平衡原理分四个阶段讨论并手工绘制滴定曲线。武汉大学主编的《分析化学》（第四版）中对滴定曲线三段一点式的模式进行改革,代之滴定曲线方程,以利于使用计算机编程给出完整的滴定曲线。利用Mathematica6.0编程来统一处理四大类滴定曲线,具有简便、快速和绘制的曲线清晰等优点。     

用Mathematica绘制几何图形

介绍了Mathematica在几种几何图形绘制中的应用,提出了获得空间旋转曲面的参数方程的一般方法,并给出了用Mathematica绘制空间旋转曲面的实例的源代码.     

用Mathematica绘制几何图形

介绍了Mathematica在几种几何图形绘制中的应用,提出了获得空间旋转曲面的参数方程的一般方法,并给出了用Mathematica绘制空间旋转曲面的实例的源代码.     

Transmission properties of fractal Cantor distribution with left-handed materials

Transmission properties of fractal Cantor distribution with left-handed materials (LHM) are investigated. The transmittance and reflectance spectra can be calculated by using the optical transmission matrix method. Comparing with the conventional Cantor multilayers, these structures with LHM have double functions of stopbands and defects. Through adjusting the thickness of dielectric layers, the properties of stopbands and defects can be obtained, respectively. For stopbands, a broad stopband filter is studied. For defect modes, multi-frequencies narrow passband filters are proposed.     

4-component 2-D CFDFD method in analysis of lossy circular waveguide with fractal rough surface

In this paper, equivalent surface impedance boundary condition (ESIBC), which takes fractal parameters (D, G) into SIBC, is implemented in the 4-component 2-D compact finite difference frequency domain (2-D CFDFD) method to an- alyze the propagation characteristics of lossy circular waveguide with fractal rough surface based on Weierstrass-Mandelbrot (W-M) function. Fractal parameters’ effects on attenuation constant are presented in the 3 mm lossy circular waveguide, and the attenuation constants of the fi...     

Optimizing pipeline for a RISC processor with multimedia extension ISA

INTRODUCTION Embedded real-time multimedia applications that involve processing of video and audio streams de- mand an efficient media approach. A thorough survey of media approaches and architectures was given by Dasu and Panchanathan (2002). These media proc- essing architectures can be classified into three cate- gories including dedicated (application-specific) hardware, media processors and instruction set ar- chitecture extensions for general-purpose processors. As for embedded med…