根据国内高速铁路框架网(CP0)基线解算软件的使用现状,提出利用Trimble Business Center(TBC)软件对高速铁路框架网(CP0)进行基线解算,通过工程实例,分析TBC软件采用广播星历与精密星历对基线解算的影响,研究TBC基线解算的适用范围,对TB...根据国内高速铁路框架网(CP0)基线解算软件的使用现状,提出利用Trimble Business Center(TBC)软件对高速铁路框架网(CP0)进行基线解算,通过工程实例,分析TBC软件采用广播星历与精密星历对基线解算的影响,研究TBC基线解算的适用范围,对TBC软件与Gamit软件的解算结果进行比较,验证TBC软件的可靠性。展开更多
To meet the authorization administration requirements in a distributedcomputer network environment, this paper extends the role-based access control model with multipleapplication dimensions and establishes a new acce...To meet the authorization administration requirements in a distributedcomputer network environment, this paper extends the role-based access control model with multipleapplication dimensions and establishes a new access control model ED-RBAC(Extended Role Based AccessControl Model) for the distributed environment. We propose an extendable hierarchical authorizationassignment framework and design effective role-registeringi role-applying and role-assigningprotocol with symmetric and asymmetric cryptographic systems. The model can be used to simplifyauthorization administration in a distributed environment with multiple applications.展开更多
文摘根据国内高速铁路框架网(CP0)基线解算软件的使用现状,提出利用Trimble Business Center(TBC)软件对高速铁路框架网(CP0)进行基线解算,通过工程实例,分析TBC软件采用广播星历与精密星历对基线解算的影响,研究TBC基线解算的适用范围,对TBC软件与Gamit软件的解算结果进行比较,验证TBC软件的可靠性。
文摘To meet the authorization administration requirements in a distributedcomputer network environment, this paper extends the role-based access control model with multipleapplication dimensions and establishes a new access control model ED-RBAC(Extended Role Based AccessControl Model) for the distributed environment. We propose an extendable hierarchical authorizationassignment framework and design effective role-registeringi role-applying and role-assigningprotocol with symmetric and asymmetric cryptographic systems. The model can be used to simplifyauthorization administration in a distributed environment with multiple applications.
