panbie

计算水声传播的快速场程序，使用了有限元方法，计算速度快，精度高。(underwater acoustic propagation Fast Field Program, using Finte Element Method,fast and accurate.)

matlab的时频分析工具箱，含全部工具箱程序(Matlab time-frequency analysis toolbox, including all toolbox programs)

利用表达式求解和栈的只是，设计一个简易的数学题库， 可供小学生作业，并能给出分数。 要求：建立试题库文件，随机产生 n 个题目；题目涉及加减乘除，带括弧的混合运算；随时可以退出；保留历史分数，能回顾历史，给出与历史分数比较后的评价。(Use solving expressions and stack just design a simple math exam, students for the job, and can give a score. Requirements: Create test file, randomly generating n topics topics involving addition, subtraction with parentheses mixing operation ready to quit keep historical scores, can look back at history, and history is given uation scores after comparison.)

用于计算谱相关函数的时域平花FFT积累算法，可改参数，改输入信号类型(calculate spectral correlation function by using time smoothing FFT Accumulation Algorithm, you can change the parameters, and the type of input signal )

桁架结构非线性有限元分析程序，可以进行结构分析，应用于钢架结构，考虑材料非线性。(Truss material nonlinear finite element analysis program, can be use in civil engineering.)

用fortran语言读取NC格式的数据,与大家分享，希望能够共同进步哈，谢谢(Used fortran language to read NC data format to share with you, hoping to make progress together Ha, thank you)

comsol .mph 压电案例文件 详细说明了如何进行压电操作(comsol .mph piezo example file)

统计学习的入门书，通俗易懂，号称是ESL的入门版，全书没有太多数学推导，适合学工程的人不适合学统计的人读(Introduction to statistical learning books, easy to understand, known as the entry version of ESL, the book does not have too many mathematical derivations, suitable for people who are not suitable for learning the project to read statistics.)

这些代码可以用于产生一系列随机数，可以根据需要使用。(These codes can be used to generate a series of random numbers may be used as needed.)

hybrid particle swarm optimization