Lagrange

有限元计算软件Nastran 运算出错时的所有错误列表，从标号1到22107.7。(FEM calculation error list of all software Nastran Error from grade 1 to 22,107.7.)

一个在fluent udf中使用Compute_Force_and_Moment函数计算力的算例(An Example of Compute_Force_and_Moment Function in Fluent UDF)

基于混沌理论进行数据预测的程序，欢欢迎需要的朋友参考下载，并提出修改意见 (, Please feel welcome the reference to a friend download data to predict the process based on chaos theory, and suggest modifications)

三维 近场－远场 变换 FDTD...........(FDTD near field to far field transmition)

压缩存储下用“追赶法”求解三对角方程组的C语言描述(Compression and storage use the " catch up method" for solving tridiagonal equations of C language description)

lasso regression. It is very good to use for statics processing.

说明：  经典圆柱绕流算例，基于palabos开源软件，计算结果非常好(cylinder flow with palabos)

windows计时器工具，能够精确到毫(0.001)，说明文档请用office2010打开。(windows timer tools, technology is accurate to the mm (0.001), documentation office2010 open.)

概念格的构造问题是形式概念分析应用的前提。由于概念格的时空复杂度随着形式背景的增大而可能指数性的增大，有关概念格的生成问题一直是形式概念分析应用研究的一个重点。国内外的学者和研究人员对此进行了深入的研究，提出了一些有效的算法来生成概念格，这些算法一般可分为两类：批生成算法(Batch Algorithm)和渐进式生成算法(Incremental Algorithm )。。 (Concept lattice structure problem is the premise formal concept analysis applications. Since the concept of space-time lattice with the increasing complexity of the form and context may increase exponentially, generating questions about the concept lattice has been a focus of formal concept analysis applied research. Domestic and foreign scholars and researchers conducted a thorough study made a number of efficient algorithms to generate the concept lattice, these algorithms can be divided into two categories: batch generation algorithm (Batch Algorithm) and progressive generation algorithm (Incremental Algorithm ). .)

说明：  拓扑优化MMA算法从空间的一个初始设计点出发，沿着某个搜索方向以适当步长的迭代格式 ，实现对设计变量的修改，以获得的值。(Starting from an initial design point in space, the topology optimization MMA algorithm modifies the design variables in an appropriate iterative format along a certain search direction to obtain the optimal value)