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gets the value of an environment variable.

timing_recovery:The importance of the work is reflected in supporting the development of new technologies and their adaptation to existing infrastructures. From the economic point of view, the final product is more efficient, flexible it can be widely available and less expensive than existing similar products

遗传算法程序包，包括用GA直接训练BP网络的权重算法，用GA先求BP网络的权重，再用纯BP直接训练BP的混合GA－BP算法，以及纯BP算法(Genetic Algorithm package, including direct training GA weight of BP network algorithm, first used GA for the weight of BP network, and then trained BP net BP mixed directly GA-BP algorithm, as well as the pure BP algorithm)

包含模糊PID的simulink仿真模块及对应的模糊规则。(includ fuzzypiD simulink module and ruler)

This MATLAB M-file implements a finite-difference time-domain solution of Maxwell s curl equations over a one-dimensional space lattice comprised of uniform grid cells. To illustrate the algorithm, a 1-GHz sinusoidal wave propagating in a nonpermeable lossy medium (epsr=1.0, sigma=5.0e-3 S/m) is modeled. The simplified finite difference system for nonpermeable.

说明：  地球物理勘探过程中对地震记录数据的子波进行提取(Geophysical data recorded during the seismic wavelet extraction)

deblurr and blur for images

关于神经网络算法的展示代码 有matlab与c#两种实现方式(Show on neural network algorithm matlab code has two implementations with c#)

matlab中魔术轮胎simulink模型，有参考文献和具体拟合参数。包括横向、纵向和横纵向耦合的情况，可以在workspace中进一步求解。(matlab in simulink magic tire model has references and specific fitting parameters. Including horizontal, vertical and horizontal situation longitudinal coupling can be further solved in the workspace.)

pid自适应控制器学习和程序大家学习，很好用的(广告)