numerical-analysis

isodata 迭代自组织的数据分析算法(isodata )

Earthquake Engineering and Structural Dynamics(You can input any number of stores by giving the mass, stiffness and damping values. Input the gamma and beta values which are related to Newmark Integration Mtd. Press Newmarks Integration button to input the values. Input the any number of storey that you expected to see the deflection for particular Earthquake. Press “Storey No” button to get that number. If you like only, you will input the period and press “Period” button. Finally press calculate button to see final results. Also you can see the both graphs in log scales also.(Please right click on the graph as shown above). You may see what type of analysis method is used. (Average acceleration relation ship or Linear variation of acceleration).)

共轭梯度求解数值优化方法，本例题主要是对于一个常见的优化方法用MATLAB进行程序运行(Conjugate gradient method of solving numerical optimization, this example is mainly optimized for a common method using MATLAB running)

说明：  利用matlab GUI界面做成的牛拉法解潮流程序，界面简单明了，最好用matlab7.0或以上版本，在2009a上也测试通过了(Using matlab GUI interface solution made of the trend process cattle Rafah, the interface is simple, preferably matlab7.0 or above, in 2009a also tested the)

Electromagnetic Band Gap Structures in Antenna Engineering

每个天线单元都由独立的移相开关控制，通过控制各天线单元发射的相位，就能合成不同相位波束。相控阵各天线单元发射的电磁波以干涉原理合成一个接近笔直的雷达主瓣，而旁瓣则是各天线单元的不均匀性而造成。(Each antenna unit is controlled by an independent phase shift switch. By controlling the phase transmitted by each antenna element, different phase beams can be synthesized. The electromagnetic wave emitted from each antenna unit of phased array generates a nearly straight radar main lobe based on the interference principle, while the sidelobe is caused by the heterogeneity of the antenna units.)

Field Ⅱ超声成像代码，可以进行单个孔径成像和合成孔径成像、加权和不加权仿真。(The calculation of point spread functions is done by placing a point in front of the transducer and then sweeping the beam over the point. This gives the point spread function of the imaging system. Field II can make this calculation for a number of points simultaneously and thereby reveal the dynamic focusing properties of the imaging system. A point phantom has been made for this purpose. It consists of a number of point targets placed with a distance of 5 mm starting at 15 mm from the transducer surface)

用matlab编程和数值计算的书籍，里面有许多源代码。(And numerical calculation using matlab programming books, there are many source code.)

牛顿插值，前插共识，前插公式，用matlab实现数值计算方法中的牛顿向前插值公式。(newton_interpolation)

四个偶极子天线的特性分析。包括场特性，方向图等(Four dipole antenna characteristic analysis. Including market characteristics, such as the direction of graph)