51ucosii

学习matlab的解微分方程的小程序，已经测试无误(The solution of differential equations matlab learning applets, have been tested correctly)

关于nurbs曲线插补一个自由软件，希望有兴趣各位一起探讨(About the nurbs curve interpolation is a free software interest you to explore together)

文件的多路归并排序算法， C++描述（要求待排序文件已经事先有序）(C++ implementation of K-Merge Algorithm)

MATCOM提供了MATLAB到C++的编程接口，本文是MATCOM4.5的说明文档，详细介绍了MATCOM的各个函数和操作符等。(MATCOM MATLAB to C++ provides a programming interface, this article is MATCOM4.5 documentation, detailing MATCOM various functions and operators and so on.)

c++priemer第三版，中文完美翻译，超好，希望对大家有用(c++ priemer third edition, Chinese perfect translation, super good, I hope useful for everyone)

编写一个程序实现小型公司的人员信息管理系统。该公司雇员（employee）包括经理（manager），技术人员（technician）、销售员（salesman）和销售部经理（salesmanager）。要求存储这些人员的姓名、编号、级别、当月薪水，计算月薪并显示全部信息。 程序要对所有人员有提升级别的功能。为简单起见，所有人员的初始级别均为1，然后进行升级，经理升为4级，技术人员和销售部经理升为3级，销售员仍为1级。 月薪计算办法是：经理拿固定月薪8000元，技术人员按每小时100元领取月薪，销售员按该当月销售额4 提成，销售经理既拿固定月工资也领取销售提成，固定月工资为5000元，销售提成为所管辖部门当月销售额的5‰。 (Write a program to implement the personnel information management system of small company. The company employees (employee) including managers (manager), technical personnel (technician), salesman (salesman) and the sales manager (salesmanager). For store the personnel s name, serial number, level, monthly salary, calculate monthly salary and display all the information. Program for all personnel have the function of level. For the sake of simplicity, all staff of the initial level 1, and then upgrade, manager promoted to level 4, technicians and sales manager for level 3, the salesperson is still the 1st level. Monthly salary calculation way is: managers with a fixed monthly salary of 8000 yuan, technicians receive monthly salary 100 yuan per hour, the salesman make the monthly sales 4 commission, sales manager with both fixed monthly salary also receive sales commissions, fixed monthly salary of 5000 yuan, sales to become the jurisdiction of the department of sales that month 5 ‰.)

是des的一种算法，被称为计数器模式（counter mode）(Is a des algorithm, known as the Counter mode (counter mode))

线性插值射线追踪法，设置模型为一三层模型，范围100m×100m(Linear interpolation ray tracing method, set the model for a three-tier model, the range 100m100m)

在实际应用中，原始的BP算法很难胜任，因此出现了很多的改进算法。BP算法的改进主要有两种途径，一种是采用启发式学习方法，另一种则是采用更有效的优化算法。本例采用动量BP算法，来实现对网络的训练过程，动量法降低了网络对于误差曲面局部细节的敏感性，有效地抑制网络陷于局部极小。 (In practical applications, the original BP algorithm very difficult to do, so there were a lot of the improved algorithm. BP Algorithm There are two main channels, a heuristic learning method is adopted, another is the introduction of more efficient optimization algorithm. In this case the use of momentum BP algorithm to realize the network training process, momentum method to reduce the network error surface for the local details of the sensitivity of the network effectively inhibited in a local minimum.)

gis系统开发公司的笔试题目，俩道简单的编程题目，要求用C++实现(gis system development company written questions, both simple programming channel topic requires C++ achieve)