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This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

是matlab编写的一个支持向量机的程序，经测试有效。程序里附带了了demo，有注释。(Matlab are prepared by a support vector machine procedures, tested and effective. Program comes with a demo, there is the Notes.)

Neighborhood rough set based heterogeneous feature subset selection

This function removes random, high frequency noise originating from the electrodes. a) First, we use a simple low-pass filter. b) Second, we apply Donoho s method by writing the code. c) Third, we simply apply Matlab s thr function. It should be noted that the considered mother wavelet is Symmlet8.

用于多径直扩信号的仿真程序，对于研究直扩信号的人很有帮助。(Simulation program for multi-straight SS signals for the DS signal is helpful.)

语音信号a律编码，输入随机语音信号，可进行A律13折线编码，并译码(Speech Signal a legal code, enter the random voice signals, can be A Law 13 Line coding and decoding)

计算兄弟数，平时练习题，算法比较笨，欢迎指教(Calculate the number of brothers, usually exercises, algorithm is stupid, please advise)

对单炮地震数据抽稀：地球物理物探工作者必备程序(a procedure of vacuate of signal shot data)

网侧变流器模型，对并网课题方向的研究可能有所帮助，可以运行。(Network-side converter model, the direction of the grid project may be helpful, you can run.)

一个用于测试准周期信号的周期的小程序，横须中用ECG信号测试，测试ECG信号的周期(A small program used to test the quasi-periodic signal cycle, cross to be using the ECG signal test, test ECG signal cycle)