main

岩体稳定性研究在工程中十分重要，岩体破坏引起崩塌落石等。(Stability of rock mass is very important in engineering, rock mass damage caused by falling rock and so on collapse.)

谱元法（SEM)学习程序之二，用于对各类波场的模拟计算(Spectral element method (SEM) study of two procedures for various types of wave field simulation)

MFCC参数和LPCC参数需要频繁使用的语音的说话人识别分析还需要使用大量的这些特征参数,这就需要研究MFCC和LPCC算法和参数提取的原则。因为我们需要了解与人交谈的过程中,我们要进行建模 率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(MFCC parameters and LPCC parameters are parameters of speaker recognition which requires frequent use of voice analysis also need to use a lot of these characteristic parameters, This requires research MFCC and LPCC algorithm and the principle of parameter extraction. Because we need to understand the process of talking to people, we want to conduct a speaker modeling the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula)

卫星通信方向的经典书籍，丹尼斯罗迪的，相关方向的可以下载看下(Satellite communication direction of the classic books, Dennis Roddy, relevant direction can download facie)

五组在matlab中应用的小程序：（1）carspls and carsplslda，竞争性自适应重加权算法（cars）筛选特征变量，并建立PLS定量或定性模型（2）mcuvepls 蒙特卡罗抽样无关信息消除后，建立PLS定量和定性模型（3）osc，正交信号校正的多变量数据处理方法（4）plot cars-lda-mcs,表征cars-lda-mcs的结果（5）demo 对以上carspls and carsplslda，mcuvepls 方法在matlab中实现举例演示(Five groups codes in matlabapplication: (1) carspls and carsplslda, competitive adaptive re-weighted algorithm (cars) for characteristic variables selection, and the establishment of PLS ​ ​ quantitative or qualitative model (2) mcuvepls， Monte Carlo sampling and the uninformative variables elimination （UVE）， and the establishment of quantitative and qualitative PLS model (3) Orthagnal signal correction（osc）, multivariate data processing method (4) plot cars-lda-mcs, characterization results of cars-lda-mcs (5) the demo about carspls and carsplslda, mcuvepls method implementation in matlab)

这是我搭建的10W小功率太阳能电池模型，可根据实际情修改太阳能光伏电池的功率、短路电流、开路电压、额定电流和额定电压。另外还有最大功率跟踪模型和高频升压逆变模型也传上来，做得比较简单，有需要的可以参考一下~(Solar photovoltaic power generation system)

通信过程中16QAM调制解调过程及其误码计算(Communication during the process of 16QAM modulation and demodulation and error calculation)

This is the file that will be converted to m unv file to allow anyone to easily understand the data in the frequency domain data.

An Information Hiding Scheme for the MDC-OFDM Wireless Networks

说明：  这是一个三维画图程序源代码，主要是进行三维网格剖分(It is a three-dimensional drawing program source code, mainly for three-dimensional mesh generation)