Delphi_ElectronicInvoicing

The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.

《Radar Systems Analysis and Design Using MATLAB》中RCS的源程序(matlab program of RCS in《Radar Systems Analysis and Design Using MATLAB》 )

matlab计算轴系振动的程序，包含“纵向振动”和“扭转振动”。(matlab to calculate the shaft vibration procedures, including the longitudinal vibration and torsional vibration.)

自动滚动demo，IOS编程学习源码，很好的参考资料。(Automatic scrolling demo, IOS programming learning source, a good reference.)

《MATLAB智能算法30个案例分析》（第二版）源代码，在第一版的基础上修改，适合高版本的matlab平台("MATLAB intelligent algorithm 30 case analysis" (the second version) source code, on the basis of the first version of the modification, suitable for high version of MATLAB platformv)

波茨曼格子流体模拟，用于模拟微观油水驱替效果和流体分布关系(LBM fluid simulation, used to simulate the micro-oil-water displacement effects and the relationship between fluid distribution)

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.

说明：  梅花生长仿真效果，使用C++和matlab实现(Plum growth simulation effect, the use of C++ And realize matlab)

Animation shows particle motion along the helix. Main file is MotionOnHelix.m This is example how Matlab can be used for educational purposes, for teaching multivariate calculus.

蓄电池模型计算，主要实现在KiBaM模型中，在不同的充放电电流下，可用能与束缚能之间的变化。(Battery model calculation, which is realized by the KiBaM model, the change of the energy and the binding energy between the battery and the different charge and discharge current. )