在进行DB2应用开发之前，了解DB2应用程序的结构，掌握相关概念，设置开发环境是很必要的。本章主要介绍这几个方面的内容。

PublicCMS是采用2016年最新主流技术开发的免费开源JAVACMS系统。商用免费，架构科学。无需任何数据库优化，即可支持上千万数据；支持全站静态化，SSI，0xml配置，扩展指令自动加载，动态页面局部静态化等为您快速建站，建设大规模站点提供强大驱动，也是企业级项目产品原型的良好选择。

PublicCMS是采用2016年最新主流技术开发的免费开源JAVACMS系统。商用免费，架构科学。无需任何数据库优化，即可支持上千万数据；支持全站静态化，SSI，0xml配置，扩展指令自动加载，动态页面局部静态化等为您快速建站，建设大规模站点提供强大驱动，也是企业级项目产品原型的良好选择。

The Real Time Streaming Protocol (RTSP) is a network protocol designed for use in entertainment and communications systems to control streaming media servers. The protocol is used for establishing and controlling media sessions between end points. RTP/RTSP is a necessary protocol for multimedia content transfer. The RTP/RTSP protocol is quite advantageous in less than ideal network condition. The protocol provides benefits like as buffer fullness control mechanism, better control of packet pacing and fast pre-roll for providing quicker streaming transfer. The protocol is best suited for streaming transfer of live content.

The Real Time Streaming Protocol (RTSP) is a network protocol designed for use in entertainment and communications systems to control streaming media servers. The protocol is used for establishing and controlling media sessions between end points. RTP/RTSP is a necessary protocol for multimedia content transfer. The RTP/RTSP protocol is quite advantageous in less than ideal network condition. The protocol provides benefits like as buffer fullness control mechanism, better control of packet pacing and fast pre-roll for providing quicker streaming transfer. The protocol is best suited for streaming transfer of live content. Due to the unreliable nature of UDP packet delivery, the quality of the received stream will be adversely affected by packet loss. It is important to calculate the actual delay experienced in the channel. By calculating the correct value chances of receiving maximum number of packets for a particular frame would increase. As part of this implementation effort would be utilized for estimating overall play out delay experienced and making the play out operation smooth by introducing a jitter buffer implementation.

PJSIP的实现是为了能在嵌入式设备上高效实现SIP/VOIP.

通过财补农行接口实现乡财补贴由农行代发放，农行与乡财局数据交互的过程。通过这一标准接口实现

签名也叫数字证书，可以理解为一个app的一个唯一标识。与项目的包名配合使用作为一个唯一标识。

qt移植就是移植一个tslib库和一个qt库，tslib的作用是触屏相关的，而qt库是运行qt程序时候需要调用的一些动态库文件

本文要介绍的是局域网组播，不考虑跨网段的组播实现，因此组播路由协议与本文要介绍的内容无关。局域网组播环境，也就是一个最小的组播环境涉及到的要素有三个，分别是组播源、支持组播的交换机以及接收组播数据的终端。首先介绍组播协议，组播地址，然后对组播源，交换机和终端在组播环境中的功能进行介绍，最后给出一个实际的局域网组播环境。

视频智能运维系统通过网络技术、视频图像分析技术、视频编解码技术等，能够实时监测并记录视频监控网络中各设备的运行状态，实时报警各类人工不能及时发现和无法发现的设备故障，定期为用户提供设备运行状态报告、故障报告；系统设计采用了C/S(客户/服务器)的系统架构模式，并且支持多服务器、多客户端的分布式部署模式，增强了对各种规模的视频监控网络的自适应性，节省了视频监控网络由于网络扩展而带来的相关二次开发费用，当网络扩展时只要相应增加服务器数量就能解决网络扩展带了的系统压力；视频智能运维系统对大中型视频监控网络支持服务器、客户端多级分布式部署和集中式管理方案，真正实现了：N服务器 VS N客户端，充分的体现了现有公安、电力等用户对视频监控网络运维管理模式。