Cisco Packet Tracer 7.0

说明：  arm architecture document. nice book. welcome to download

说明：  该书于2017年2月由机械工业出版社正式出版,凝聚了徐政教授和近20名团队成员多年来的心血.第二版在第一版的基础上,有了较大篇幅的扩充,在系统性和完整性方面得到了加强,符号和术语也得到了进一步规范.该书系统讲述了柔性直流输电的理论和应用.内容包括柔性直流输电系统的特点和应用,(The book was officially published by the Machinery Industry Press in February 2017, and it has gathered the hard work of Professor Xu Zheng and nearly 20 team members for many years. The second edition has a larger expansion on the basis of the first edition. The system and integrity have been strengthened, and the symbols and terminology have been further standardized. The book system describes the theory and application of flexible DC transmission. The content includes the characteristics and applications of flexible DC transmission systems.)

说明：  这个文档讲述了PLC开发过程的详细情况，是一本国外很经典的参考书籍，对于PLC开发者来说，很不错(This document describes the details of the development process PLC, is a classic reference books abroad, for PLC developers, very good)

AEC 回声消除参考书，里面全面介绍了AEC相关理论。(AEC spec documents)

认知无线电是一种用于提高无线电通信频谱利用率的新的智能技术. 首先简述认知无线电的背景和概念,针 对认知无线电的频谱感知功能,详细地分析基于能量检测的频谱检测方法,在此基础上研究了噪声方差的不确定 性对检测性能的影响. 针对无线信号检测具有本地局域性和能量检测存在信噪比极限的特点,提出一种分布式有 限合作检测机制,推导出基于“OR”规则的有限合作机制的检测概率,并进行Monte Carlo仿真.(Cognitive radio is a radio communications spectrum used to improve the efficiency of the new smart technology. First, the background and outlined the concept of cognitive radio, spectrum sensing for cognitive radio capabilities, a detailed analysis of the spectrum based on energy detection test In this study the noise variance based on the uncertainty of the detection performance. for wireless signal detection with local detection of localized and there is signal to noise ratio limit of the energy characteristics of a distributed cooperative detection mechanism, derived out based on " OR" rules of the detection probability of the limited cooperation mechanism and conduct Monte Carlo simulation.)

对STK的基本模块以及每个模块的功能及使用方法进行了说明(The basic modules of STK and the function and use of each module are described)

人脸识别原理介绍 有一些算法介绍 并附加图解 适合初学者(language：English from university of British)

Power System Analysis - John J. Grainger ebook

Dive into Python的中文版，对应Python2.7版(Dive into Python' s Chinese version, the corresponding Python2.7 version)

反垃圾邮件技术LSA和MD5，对研究反垃圾邮件技术的朋友有所帮助(Anti-spam technology LSA and MD5, the study of anti-spam technology help a friend)