最近有个项目需要用到网络获取时间，C++来实现，并用年月日显示出来，大量百度资料，都是需要整理下才能使用，我直接做个笔记，下载下来就可以使用，简单方便快捷，并附带WS2_32.lib库文件，不懂的直接评论留言

Multivariate time series analysis considers simultaneously multiple time series. It is a branch of multivariate statistical analysis but deals specifically with dependent data. It is, in general, much more complicated than the univariate time series analysis, especially when the number of series considered is large. We study this more complicated statistical analysis in this book because in real life decisions often involve multiple inter-related factors or variables. Understanding the relationships between those factors and providing accurate predictions of those variables are valuable in decision making. The objectives of multivariate time series analysis thus include 1. To study the dynamic relationships between variables 2. To improve the accuracy of prediction

学习完GUI之后，用java语言编写实现简单计时器功能，GUI做图形化界面，新手可以参考，不惜勿喷。

时频分析时频分析（JTFA）即时频联合域分析（Joint Time-Frequency Analysis）的简称，作为分析时变非平稳信号的有力工具，成为现代信号处理研究的一个热点，它作为一种新兴的信号处理方法，近年来受到越来越多的重视。时频分析方法提供了时间域与频率域的联合分布信息，清楚地描述了信号频率随时间变化的关系。

唯一一本介绍了dx和hlsl的实时渲染书籍

TIME-HARMONIC ELECTROMAGNETIC FIELDS时谐电磁场经典教材 作者：Roger F. Harrington 目录： Foreword to the Revised Edition. Preface. Fundamental Concepts. Introduction to Waves. Some Theorems and Concepts. Plane Wave Functions. Cylindrical Wave Functions. Spherical Wave Functions. Perturbational and Variational Techniques. Microwave Networks. Appendix A: Vector Analysis. Appendix B: Complex Permittivities. Appendix C: Fourier Series and Integrals. Appendix D: Bessel Functions. Appendix E: Legendre Functions. Bibliography. Index.

C++上机实验：类的定义与应用。定义一个时间类。

时频分析的经典教材，中文版，好不容易找到的，拿出来和大家分享。

Book Description The first book on this core game development topic by an experienced developer Product Description The control of cameras is as important in games as it is in cinema. How the camera tracks and moves determines our point of view and influences our attitude towards the content. A poorly designed camera system in a game can disrupt a users experience, while a well-designed one can make a good game into a great one. The challenge in games is that the camera must respond to unscripted events, and this is where much of the difficulty of designing real-time camera systems arises. The increasing use of motion in virtual environments, marked by the inclusion of physics modeling and complex collision detection systems, means that camera systems must be even more effective to keep up. Real-Time Cameras is written by an experienced game developer who has written camera control systems for award-winning games such as Metroid Prime. Mark Haigh-Hutchinson discusses the key algorithms for camera control and then shows how to implement them in code. This book is written for game developers and designers, although it is also pertinent to other professionals in the interactive media field. Real-Time Cameras presents a practical approach to camera systems, introducing their theory, design, and implementation. * The first book on this critical and often poorly understood aspect of game development * Includes analysis of camera and control systems from existing games along with practical implementation advice * Discusses the key algorithms with pseudo code examples, and includes movies demonstrating camera technique on the companion CD-ROM

中文完整版 正弦电磁场(中文版)-R.F.Harrington-Time-Harmonic Electromagnetic Fields