S7-1200使用手册

说明：  iot security challenge

使用excel制作自己需要的管理软件，使用excel制作 自己需要的管理软件(Using Excel to make the management software you need)

In many areas of commerce, government, academia, and hospitals, large collections of digital images are being created. Many of these collections are the product of digitizing existing collections of analogue photographs, diagrams, drawings, paintings, and prints. Usually, the only way of searching these collections was by keyword indexing, or simply by browsing. Digital images databases however, open the way to content-based searching. In this paper we survey some technical aspects of current content-based image retrieval systems.

geoda应用性文章，对geoda的应用有很好的帮助。(geoda application of the article, the application of geoda good help.)

数据奇异值剔除的几个经典方法，供大家参考(Singular value data exclude several classical methods for reference)

异步电机矢量控制系统，可以为初学者做系统调试使用。也可以作为多台电机协同控制的基础系统。(Induction motor vector control system, you can do system debug for beginners. It can be used as the basis of more than one motor cooperative control system.)

很好的学习C++的教程，这是第七章至第十二章的PPT(Good learning C++ s Guide, which is under Chapter VII to XII of the PPT)

详细讲解了PCA故障处理中的T2统计量的推导过程(The derivation of T2 statistics in PCA fault handling is explained in detail.)

通过一些基础的程序，讲述C和c++的一些基础知识。(Through some basic procedures on the C and c++ some basic knowledge.)

西安交通大学的《自制可编程控制器》电子书(Xi)