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该文研究了河南省不同年龄组的历史发展趋势和65岁以上人口未来发展趋势以及影响老龄化相关因素的问题。通过对不同时期的人口数据的分析和预测，从一个经典的模型入手，建立了三个不同的模型，分别 模型、 模型和关联分析模型，然后采用统计分析的方法来解决这些问题，预测出了河南省未来老龄化人口的发展。(This paper studies the different age groups in Henan Province of historical development trends and population over the age of 65, as well as the impact of future development trend of aging-related factors. Different stages of the analysis of population data and projections from a model of the classic, the establishment of three different models, namely, model, models and associated analysis model, and then using statistical analysis methods to solve these problems, predict the Henan Province, the future development of an aging population.)

Asymptotic partially directed coherence

一种MUSIC算法的改进形式，大大的减小了计算量(An improved form of the MUSIC algorithm, greatly reduce the amount of computation)

冈萨雷斯的数字图像处理MATLAB版本，很适合初学图像处理的看看，容易上手学习MATLAB编程的图像处理(Digital image processing MATLAB version Gonzalez, very suitable for beginners image processing look, easy to use image processing to learn MATLAB programming)

采用声子晶体能带理论求解周期性结构振动特性，采用解析法编程，适合初学者学习参考(Wave propagation in periodic structures band-gap behaviours)

一种主元分析的人脸识别matlab源码，利用SVD分解提取主分量进行人脸识别(A principal component analysis for face recognition matlab source code, the use of SVD decomposition to extract principal components for face recognition)

通过交替最小二乘法解决协同过滤典型问题，包含针对训练集的超参数和特征个数的选择(Alternated Linear Square)

mfile investigates the generation, transmission and reception of the OFDM signal without channel noise or HPA effect

FFT滤波matlab程序FFT滤波matlab程序(FFT filter)

说明：  自己编的 利用隐式马尔科夫过程进行目标状态估计(Using implicit markov process to estimate target state )