Per_spectrum

PcA和Fisher方法的人脸识别,希望对大家有用，(PcA Fisher and methods of face recognition, we hope to useful,)

带资源约束的最短路径算法实现，包括时间和负载两种约束(an exact algorith for the shortest path problem with resource constraints, which are time and load constraints.)

城市交通方式划分，运用于城市轨道交通需求预测(Traffic cell Od merging process, applied to urban rail transport demand forecast)

说明：  提取远场图,提取参数后处理，可以完成多种数据处理的科学计算(extract farfield pattern)

电力牵引电机控制，设计的目的是用MatLab得到系统的状态空间模型，计算系统的传递函数。并预测系统的阶跃响应，并判断系统是否能控和能观。(Electric traction motor control, is designed to be used MatLab system state space model to calculate the system transfer function. And predict the system step response and determine whether the system is able to control and observability.)

脉冲振幅（PAM）的仿真：脉冲振幅调制，即是脉冲载波的幅度随基带信号变化的一种调制方式。如果脉冲载波是由冲激脉冲组成的，则前面所说的抽样定理，就是脉冲振幅调制的原理。(Pulse amplitude (PAM) of the simulation: Pulse amplitude modulation, that is, the range of carrier pulse with changes in base-band signal of a modulation. If the pulse carrier is formed by the impulse of the pulse, then said in front of the sampling theorem, that is, the principle of pulse amplitude modulation.)

In computer science, particle swarm optimization (PSO) is a computational method that optimizes a problem by iteratively trying to improve a candidate solution with regard to a given measure of quality. PSO optimizes a problem by having a population of candidate solutions, here dubbed particles, and moving these particles around in the search-space according to simple mathematical formulae over the particle s position and velocity. Each particle s movement is influenced by its local best known position and is also guided toward the best known positions in the search-space, which are updated as better positions are found by other particles. This is expected to move the swarm toward the best solutions.

MATLAB的主要功能、界面操作基础，对MATLAB软件知识进行总结概括。(MATLAB' s main function, the interface based on MATLAB software knowledge summarized.)

matlab中的FFT使用范例，非常经典(FFT in matlab usage examples, very classic)

说明：  编写的一个信号通过带阻滤波器的例子，已经运行通过(Signal through an example of band-stop filter, run by)