yankebingchuang3

本文先用灰色GM(1,1)模型对陕西省GDP 做预测, 经过检验, 再用此模型确定另外一些未知指标, 最后通过确定的这些指标用 灰色GM(1,N)模型作预测, 通过比较总结两种模型各自的特点, 从而科学的指导陕西省经济发展,国内生产总值预测模型具有重要的现实意 义。 (This article first gray GM (1,1) models do forecast GDP of Shaanxi province, on examination, then this model to determine other unknown targets, and finally through the identification of these indicators of gray GM (1, N) model for prediction, by Comparison of two models summarize the characteristics of their own, so the guidance of scientific economic development in Shaanxi Province, China' s GDP forecast model has important practical significance.)

说明：  matlab program for the simple example. which will help u to understand how to use mtlab.

matlab实现lsqr算法的源码，有强烈的参考价值，可用于地球物理反演。(matlab realize lsqr algorithm source code, there is a strong reference value, can be used for geophysical inversion.)

50－channel的polyphase filter，基于FIR滤波器(50-channel of the polyphase filter, based on the FIR filter)

matlab生成m序列的函数 原来那个效率太低，主要是因为实际应用并不需要生成太长的m序列，加入了需求长度，能有效减少运行时间。25级的移位寄存器，运行了一个小时都没有出来一周期，我仅仅需要三千bit而已。改进版：(matlab generate a function of the original m sequence that efficiency is too low, mainly because of the practical application does not require generation of long m sequences, joined the demand for length, can effectively reduce the running time. 25 of the shift register, run for an hour did not come out one cycle, I just need more than 3000 bit. Improved version:)

说明：  每个汉字代表1个数字（1~9）。相同的汉字代表相同的数字，不同的汉字代表不同的数字。 (Each character is representative of a number (1 to 9). The same Chinese characters represent the same number, different characters represent different numbers.)

Matlab script for Alamouti code

边界单元法应用于电磁场及弹性力学中权函数的代码(boundary element method for electromagnetic field and elasticity function of the right code)

一个用盒计分维法编写的matlab程序可以用来求解曲线得分形维数(box with a scoreboard prepared by the Victoria Law Matlab procedures can be used to solve the curve fractal dimension scores)

电力系统状态估计的程序，可以进行简单的14机模型的计算(Power system state estimation procedures, a simple model for the calculation of the 14 machines)