FDTD原理及例子

MQ135氨气模块，能够精准的测试出氨气浓度，并通过ADC模式上传给开发板。(MQ135 ammonia module, can accurately test the ammonia concentration, and uploaded to the development board through ADC mode.)

说明：  逍遥西游200多个更改路径以及修复文档，客户端修复文档，服务端修复文档(More than 200 change paths and repair documents, client repair documents and server repair documents of Xiaoyao westward Tour)

说明：  修改原来的六步支付过程为一页支付.改善体验.(Modify the original payment process to pay for one page.)

Z值渲染，VB＋M0开发的GIS源代码，可以在二维图上增加Z值，实现第三维操作-Z value rendering, VB M0 developed GIS source code, can be increased in two-dimensional map of Z values, the realization of the third-dimensional operation

用VB.net编写的记事本.希望对大家有用-using VB.net prepared by the notebook. We hope to useful

对扫描到的车牌进行二值化处理，进行校正等处理后对车牌进行提取信息，进行识别(The scanned license plate is binarized, corrected and processed to extract information and recognize the license plate)

Implments a Bank of hours

this a prolog implementation to solve a single maze-this is a prolog implementation to solve a single maze

说明：  建立水声信道的射线模型在工程应用上有重要的意义。射线声学是把声波的 传播看作是一束无数条垂直于等相位面的射线的传播，每一条射线与等相位面相 垂直，称为声线。声线途经的距离代表波传播的路程，声线经历的时问为波传播 的时间。声线束所携带的能量即为波传播的声能量。与几何光学相似，射线声学 的描述方法给人直观的感觉，在一定的条件下，射线声学的数学运算也比较简捷， 由射线理论给出的声线图可以给声场以直观、形象的理解。 本模型可以准确的衡量声波在海洋中传播路径(Establishing ray model of underwater acoustic channel is of great significance in engineering application. X-ray acoustics refers to sound waves. Propagation is regarded as the propagation of a bunch of innumerable rays perpendicular to the isophase plane, each ray being in phase with the isophase plane. Vertical, called sound line. The distance through which the sound line Travels represents the distance of the wave propagation, and the time that the sound line experiences is the wave propagation. The time. The energy carried by the sound beam is the sound energy of wave propagation. Like geometric optics, ray acoustics The descriptive method gives people an intuitive feeling. Under certain conditions, the mathematical operation of ray acoustics is relatively simple. The sonogram given by ray theory can give an intuitive and visual understanding of the sound field.Accurate measurement of sound wave propagation in the ocean)

说明：  自适应中值滤波，用于图像分割，医学图像使用(adaptive median filtering)