cal

平面桁架单元，力，长度，刚度，应力程序,使用matlab编制(plane truss force,length ,stiff,stress)

This function calculates the RND from a cross-section of put prices using the PCA method as described in O. Bondarenko. ``Recovering Risk-Neutral Densities: A New Nonparametric Approach, UIC working paper, September 2000. (This function calculates the RND from a cross-section of put prices using the PCA method as described in O. Bondarenko. ``Recovering Risk-Neutral Densities: A New Nonparametric Approach, UIC working paper, September 2000. )

matlab-hfss脚本文件的编写，含有周期性结构的脚本的编写，这个是之前都没人编写的。(Matlab-hfss scripts, file preparation, containing the preparation of the periodic structure of the script, this is a nobody before written.)

C# code for software engineer and student who want to learn

有井曲线作为输入可计算其地震波的衰减,ML法能够很好的估计信号的信噪比,用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述。( There is a well attenuation curve as input to calculate its seismic waves, ML estimation method can be a good signal to noise ratio, Monte Carlo simulation method of calculating the American option price and basic description.)

mathematique applications

Matlab newron simulation on Delfi

SPN的差分密码分析，建议选取的明密文对数量为8000+，太小可能结果有偏差(SPN Differential cryptanalysis, ciphertext clear recommendations for selected number of 8000+, too small deviations may result)

说明：  自相关函数及互相关函数编程(Autocorrelation function and its programming)

Synthetic aperture radar imaging provides high resolution images of large areas. The intensities of pixels in a SAR image are based on the spatial orientation, roughness, and dielectric constant of the surface imaged. SAR is an active sensor, transmitting its own energy, and then measuring the return scattered by the earth抯 surface back to the satellite抯 antenna. SAR processing is the transformation of raw SAR signal data into a spatial image. In this communication, we present a contribution concerning implementation of a SAR image formation with the IDL language. This process is performed in a frequency domain correlation of the received signal including range compression, range migration, and azimuth compression. The output is the final step in which the data is transposed back into its original format and written to an output file.