中国典型城市工况文件

VBA学习教程 入门到精通 VBA学习教程 入门到精通(VBA learning tutorials)

《Python数据挖掘入门与实践》高清中文版 本书作为数据挖掘入门读物，介绍了数据挖掘的基础知识、基本工具和实践方法，通过循序渐进地讲解算法，带你轻松踏上数据挖掘之旅。本书采用理论与实践相结合的方式，呈现了如何使用决策树和随机森林算法预测美国职业篮球联赛比赛结果，如何使用亲和性分析方法推荐电影，如何使用朴素贝叶斯算法进行社会媒体挖掘，等等。本书也涉及神经网络、深度学习、大数据处理等内容。本书面向愿意学习和尝试数据挖掘的程序员。("Python Data Mining Getting Started and Practice" HD Chinese version As a primer on data mining, this book introduces the basic knowledge, basic tools and practical methods of data mining. By step-by-step explanation of the algorithm, you can easily embark on the journey of data mining. This book uses a combination of theory and practice, showing how to use the decision tree and random forest algorithm to predict the results of the American professional basketball league game, how to use the affinity analysis method to recommend movies, how to use the naive Bayesian algorithm for social media mining ,and many more. This book also covers neural networks, deep learning, big data processing and more. This book is for programmers who are willing to learn and experiment with data mining.)

ARM M0,M+ eBook for beginner

说明：  双PWM 控制策略研究 发电机侧控制策略 网侧控制策略(PI control matlab freedom PID control)

基于网络的计算机处理技术，与集中式相对应。由于个人计算机的性能得到极大的提高及其使用的普及，使处理能力分布到网络上的所有计算机成为可能。分布式计算是和集中式计算相对立的概念，分布式计算的数据可以分布在很大区域(Network-based computer processing technology corresponds to centralized. As the performance of personal computers has been greatly improved and the popularity of their use, it is possible to distribute processing power to all computers on the network. Distributed computing is a concept opposite to centralized computing. The data of distributed computing can be distributed in a large area.)

说明：  本书是对4.4BSD操作系统的设计和实现的全面描述，在讨论设计理论的同时，也注重介绍实现的细节。 全书分为五个部分，共有14章。第一部分介绍了BSD的历史，简单介绍了操作系统设计的几个基本方面，还介绍了内核服务的基本内容。第二部分介绍了进程管理和内存管理的内容。第三部分介绍I／O系统，包括本地和网络文件系统以及终端处理。第四部分介绍了进程间通信、网络通信以及网络协议。第五部分介绍了系统操作知识。 本书适合作为高等院校计算机专业操作系统课程教材，也适合开放系统下的管理人员和开发人员阅读参考。(err)

一本关于电子战的书籍，涉及雷达，通信等方面，EW103 Tactical Battlefield Communications EW（战役战术通信电子战）(a book about electronic warfare involves radar, communications and so on.EW103 Tactical Battlefield Communications EW)

徐士良C常用算法程序集(第二版).(XU Shi-liang C algorithms commonly used procedures set (the second version).)

说明：  secure communicating systems

说明：  The objective is to present a nonlinear approach to design a suitable controller system for the photovoltaic (PV) single-phase grid-connected system. The system structure includes a PV generator, Boost converter, and DC-AC inverter coupled to grid network. A backstepping controller is developed to extract maximum point power tracking (MPPT), to regulate the DC bus voltage, and to generate a sinusoidal current into the grid in phase with grid voltage in order to achieve unity power factor. The stability of the control algorithm is demonstrated by tools of Lyapunov analysis. Simulations show that the proposed controller system completely accomplishes listed aims even under atmospheric conditions variation. Theperformance of the proposed controller has been validated by numerical simulation in MATLAB SIMULINK(The objective is to present a nonlinear approach to design a suitable controller system for the photovoltaic (PV) single-phase grid-connected system. The system structure includes a PV generator, Boost converter, and DC-AC inverter coupled to grid network. A backstepping controller is developed to extract maximum point power tracking (MPPT), to regulate the DC bus voltage, and to generate a sinusoidal current into the grid in phase with grid voltage in order to achieve unity power factor. The stability of the control algorithm is demonstrated by tools of Lyapunov analysis. Simulations show that the proposed controller system completely accomplishes listed aims even under atmospheric conditions variation. Theperformance of the proposed controller has been validated by numerical simulation in MATLAB SIMULINK)