zhixin

sound very useful e-book

非线性方程组N-L解-数值方法(MATLAB版 第4版).pdf(Nonlinear equations NL- A numerical method (MATLAB version 4). Pdf)

a radial basis function network is an artificial neural network that uses radial basis functions as activation functions.

从初值出发，先计算y对时间t的导数，得到y的变化速度；求出x对t的导数，得到x随时间的变化速度。然后时间前进一小步h=0.002，同时x和y也都发生一个小的变化，即在原来数值基础上加上时间步长h和变化速度的乘积。如果x到达1或者-1，强制让y发生变化。这个过程不断迭代，得到结果。 (completed chart)

1998年, Watts和Strogatz 提出了小世界网络这一概念,并建立了WS模型。 实证结果表明,大多数的真实网络都具有小世界特性(较小的最短路径) 和聚类特性(较大的聚类系数) 。 WS小世界模型构造算法 1、从规则图开始：考虑一个含有N个点的最近邻耦合网络，它们围成一个环，其中每个节点都与它左右相邻的各K/2节点相连，K是偶数。 2、随机化重连：以概率p随机地从新连接网络中的每个边，即将边的一个端点保持不变，而另一个端点取为网络中随机选择的一个节点。其中规定，任意两个不同的节点之间至多只能有一条边，并且每一个节点都不能有边与自身相连。 (In 1998, Watts and Strogatz proposed the concept of the small world network, and the establishment of the WS model. The empirical results show that most real networks have small world (the smaller the shortest path) and clustering properties (high clustering coefficient). WS small-world model construction algorithm 1, from the rules FIG: consider a nearest neighbor coupling network with N points, they are surrounded by a ring, wherein each node and its left and right adjacent to each of K/2 connected to the node, K is an even number. The 2 randomized reconnection: randomly with probability p from the new connection on each side of the network, coming section of one of the endpoints remain unchanged, while the other endpoint is taken as the random selection of a node in the network. Which states that between any two different nodes can have at most one edge, and each node can not be connected to its own side.)

电力系统 重合闸建模，能很好的对分布式电源的重合闸情况进行模拟(Reclosing power system modeling, can be a good situation for reclosing simulation of distributed power)

在自重和温度载荷作用下的斜腿刚构桥的matlab有限元计算源程序，配套书籍是《ansys分析与matlab编程：徐荣桥》(Under its own weight and temperature loads inclined leg rigid frame bridge Matlab finite element calculation source, supporting the book is " ANSYS analysis and the matlab programming: Xu Rong bridge" )

MATLAB串口接受并用GUI显示数据曲线(MATLAB receive the date by using COM and plot in GUI.)

世界坐标系转换 二维和三维的坐标系compound(The world coordinate system transformation)

this is the Z transform matlab code