对照电子商务和数字证书认证机构的理论分析，以重庆市数字证书认证中心有限公司为案例进行了全面细致的分析和研究。
According to the theories of EC and Certification Authority, this article has do a total accord analyses and studies to the ChongQing Certification Authority Company.
杨帆：（1981- ），男，籍贯安徽，重庆邮电大学通信与信息系统专业硕士研究生，研究方向：个人通信，数字电视。
Yang Fan: (1981- ), male, Chongqing, the postgraduate of Chongqing University of Post and Telecommunications, engaged in personal communications research, digital TV.
重点介绍了建设中的重庆市数字信息资源和服务体系(CDISS)。
A research project is also introduced, which aims to establish the Chongqing Digital Information and Service System (CDISS).
罗风（1982-）：女，籍贯重庆，重庆邮电大学通信与信息系统学院硕士研究生，研究方向数字电视。
Luofeng (1982- ) female, comes from Chongqing, graduate student , Academy of Telecommunications, Chongqing university post and telecommunications.
运用数字化绿地概念实现重庆市绿地管理系统的绿地查询、绿地管理以及绿地统计功能。
The searching, management and analyzing functions in the green space management system of Chongqing are realized through the concept of digital green space.
根据市场预测的结果，论文对重庆市数字集群移动通信网络进行了具体规划设计。
On the basis of market forecast results, the paper marks out Chongqing digital trunking mobile communication networks.
根据市场预测的结果，论文对重庆市数字集群移动通信网络进行了具体规划设计。
On the basis of market forecast results, the paper marks out Chongqing digital trunking mobile communication networks.
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