function-method

由于多径和移动台运动等影响因素，使得移动信道对传输信号在时间、频率和角度上造成了色散，如时间色散、频率色散、角度色散等等，因此多径信道的特性对通信质量有着至关重要的影响，而多径信道的包络统计特性成为我们研究的焦点。根据不同无线环境，接收信号包络一般服从几种典型分布，如瑞利分布、莱斯分布和Nakagami-m分布。(Because multipath and mobile and other sports influence factor, makes mobile channel in transmission in time and frequency signal and Angle caused the dispersion, such as time dispersion, frequency dispersion, Angle dispersion, and so on, thus multipath channel of communication with the characteristics of quality is very important, while the effect of multipath channel (the statistical properties become the focus of our research. According to different wireless environment, receiving signals envelope general subject to several typical distribution, such as Rayleigh distribution, rice distribution and Nakagami-m distribution. )

太阳能最大功率点跟踪模型 matlab专用 上传上来(Maximum power point tracking solar model matlab dedicated upload up)

说明：  运用matlab编写DNN程序，带有几个实例，有BP神经网络，relu，sigmod等~(Using matlab to write DNN program, with several examples, such as BP neural network, relu, sigmod, etc.~)

说明：  本人自己完成的矩阵LU分解，带有示例，希望共同探讨。(I completed matrix LU decomposition, with examples, and hope to explore.)

h.264的帧内编码，用matlab实现，代码实用易读，对h.264的编程学习很有帮助(intra-coded h.264 using matlab implementation, code readability and practical, helpful for learning programming h.264)

国外计算机科学教材系列，模式识别第四版课后习题部分matlab源码，李晶皎，王爱侠等译(Foreign computer science textbook series, the fourth edition of after-school exercise part of pattern recognition matlab source, Jiao Jing, Wang Aixia translated)

用mean-shift方法进行运动目标跟踪的源码，有一定的参考价值()

avi格式文件转换为图片文件。该文件可以自行选择bmp或jpg格式，然后将avi视频的每一帧转换为相应格式的图片。(this program can convert the frames of the avi objects to pictures.)

NSArray Class Reference for Developers

数值方法计算传热问题实例 边长为200×200mm的二维矩形材料内的稳态温度分布。上侧和左侧维持恒壁温；下侧为绝热；右侧为对流换热条件。具体参数为： 材料的导热系数=20w/m• k； 上侧温度t1=100℃ 右侧流体温度tf=20℃ 表面传热系数 h分别为1w/m2• k和100 w/m2• k 左侧温度t2=20℃ 下侧绝热(Numerical method to calculate the heat transfer problem instance side of 200 × 200mm rectangular two-dimensional steady-state temperature distribution within the material. On the left side and to maintain constant wall temperature lower side of insulation the right side of the convective heat transfer conditions. Specific parameters are: thermal conductivity of the material = 20w/m • k on the side of the temperature t1 = 100 ℃ right side of the fluid temperature tf = 20 ℃ surface heat transfer coefficient h were 1w/m2 • k and 100 w/m2 • k temperature t2 = 20 ℃ left side of the insulation under)