DCMachines

测绘领域，该程序为一个边角网平差的程序，能够进行近似计算、间接平差计算，同时能够绘制出测量的网图，进行精度测评。(The field of surveying and mapping, the program for a corner net adjustment procedures can be approximately calculated, indirect adjustment calculation, at the same time able to draw a network diagram, measurement accuracy evaluation.)

从国外网站下载的,粒子滤波演示程序,程序简单易懂(Website from abroad, the particle filter demo program, the program easy-to-read)

采用的是规则网格进行的波场模拟，该方法是对一阶的声波方程进行的模拟，应用了二阶的精度 (Uses a regular grid for the wave field simulation, the method is an order of the acoustic wave equation simulation, the application of the second-order accuracy)

the Cobb–Douglas functional form of production functions

说明：  VC++增强版电子标尺软件的源代码，透明窗体的实现是本程序的关键性技术，本标尺采用两点测量、多点测量、多角度测量的方法，配合窗体透明特效，完成一个逼真好用的电子标尺，这样，当你在网页上需要确定图片及媒体的宽度和高度时，就可用这个软件轻松的量出它的尺寸了。 (Enhanced version of VC++ source code of the software electronic scale, transparent form of implementation is the key technology of this procedure, the use of two measurement scale, multi-point measurement, multi-angle measurement method, with transparent window effects, to complete a real good using electronic ruler, so that when you need to determine the picture on the website and the media width and height, you can use this software easily measure out the size of it.)

1、 可以对房屋信息进行模糊与精确查询 2、 用户可以登录，登录后可以查看该用户所有房屋信息。 3、 用户可以对其进行管理 ，实现增、删、改，并可以注销。(1, housing information can be vague and precise query 2, the user can log in, log in to see all the houses of the user information. 3, the user can be managed to achieve growth, delete, change, and can be canceled.)

该程序实现瞬变电磁法三维正演，其中场源可以是多个。(The program realizes the 3D forward modeling of transient electromagnetic method, in which the field source can be multiple.)

这是关于七参数转换的代码，他的转换精度高，另外附有原始数据(Seven parameter transformation)

牛顿－拉夫逊法潮流计算 基本步骤： 　　（1）形成节点导纳矩阵 　　（2）将各节点电压设初值U， 　　（3）将节点初值代入相关求式，求出修正方程式的常数项向量 　　（4）将节点电压初值代入求式，求出雅可比矩阵元素 　　（5）求解修正方程，求修正向量 　　（6）求取节点电压的新值 　　（7）检查是否收敛，如不收敛，则以各节点电压的新值作为初值自第3步重新开始进行狭义次迭代，否则转入下一步 　　（8）计算支路功率分布，PV节点无功功率和平衡节点柱入功率。(Newton-Raphson method flow calculation basic steps : (1) formation of nodal admittance matrix (2) to set up the initial node voltage U, (3) the initial node-generation-related demand. calculated that the constant term formula Vector (4) nodes will be incorporated into the initial voltage-seeking, calculated Jacobian matrix elements (5) solving that equation, seek to amend the vector (6) to strike a new node voltage value (7) to check whether convergence, if not restrained. concentrated in the nodes of the new voltage as the initial value since the first three steps to re-start the narrow iterations. Otherwise, turn into the next (8) Calculation branch power distribution, PV nodes reactive power and balance-node into power.)

用c++做的汽车4s店销售系统（mfc） 录入查询库存预定等功能模块 头文件中定义 class CAutomobile4SshopDlg : public CDialog 头文件中定义class sale : public CDialog class service : public CDialog class storage : public CDialog class guanli : public CDialog 分别作销售，服务，库存，管理功能模块函数体调用 #define IDM_ABOUTBOX 0x0010 #define IDD_ABOUTBOX 100 #define IDS_ABOUTBOX 101 #define IDD_AUTOMOBILE4SSHOP_DIALOG 102 .....宏定义为函数体调用(Using c++ to do car 4s shop sales system (mfc) Input query inventory reserve and other functional modules Header file defines class CAutomobile4SshopDlg: public CDialog Header file defines class sale: public CDialog class service: public CDialog class storage: public CDialog class guanli: public CDialog Respectively, for sales, service, inventory management function module calls the function body # define IDM_ABOUTBOX 0x0010 # define IDD_ABOUTBOX 100 # define IDS_ABOUTBOX 101 # define IDD_AUTOMOBILE4SSHOP_DIALOG 102 Defined as a function of the body ..... macro call)