The content security requirements of a radio frequency identification （RFID） based logistics-customs clearance service platform （LCCSP） are analysed in this paper. Then, both the unified identity authentication an...The content security requirements of a radio frequency identification （RFID） based logistics-customs clearance service platform （LCCSP） are analysed in this paper. Then, both the unified identity authentication and the access control modules are designed according to those analyses. Finally, the unified identity authentication and the access control on the business level are implemented separately. In the unified identity authentication module, based on an improved Kerberos-based authentication approach, a new control transfer method is proposed to solve the sharing problem of tickets among different servers of different departments. In the access control module, the functions of access controls are divided into different granularities to make the access control management more flexible. Moreover, the access control module has significant reference value for user management in similar systems.展开更多
The promotion of precise poverty alleviation in poverty-stricken areas will inevitably lead to changes in local folk customs.The economic development may bring about greater development of folk customs,and may also le...The promotion of precise poverty alleviation in poverty-stricken areas will inevitably lead to changes in local folk customs.The economic development may bring about greater development of folk customs,and may also lead to qualitative changes in folk customs.This paper mainly introduced the impact of the precise poverty alleviation on the folk customs.Based on the analysis,it came up with pertinent control measures,to better combine the folk customs with precise poverty alleviation measures,to promote common development of economy and culture in poverty stricken areas.展开更多
在新型电力系统中,亟待深度挖掘需求侧资源以提升系统灵活性和新能源消纳能力。在“新基建”背景下,5G基站作为一种新型需求侧资源正迅速发展。研究如何在保证基站备用需求的前提下,由铁塔公司组建含大规模5G基站的虚拟电厂(virtual pow...在新型电力系统中,亟待深度挖掘需求侧资源以提升系统灵活性和新能源消纳能力。在“新基建”背景下,5G基站作为一种新型需求侧资源正迅速发展。研究如何在保证基站备用需求的前提下,由铁塔公司组建含大规模5G基站的虚拟电厂(virtual power plant,VPP)并常态化参与需求响应。首先,提出了考虑储能动态备用容量的5G基站运行可行域构建方法,建立了5G基站VPP的聚合模型。然后,建立了5G基站VPP响应负荷准线的日前优化模型,提出了适合对大规模5G基站进行协调控制的日内解聚合方法。最后,建立了含高比例新能源的区域电网仿真算例。仿真结果表明,聚合大规模基站参与准线型需求响应,可以显著降低5G基站的运行成本,同时提高电网的新能源消纳能力。展开更多
基金supported by Department of Science & Technology of Guangdong Province (No.2006A15006003)National High Technology Research and Development Program of China (863 Program)(No.2006AA04A120)
文摘The content security requirements of a radio frequency identification （RFID） based logistics-customs clearance service platform （LCCSP） are analysed in this paper. Then, both the unified identity authentication and the access control modules are designed according to those analyses. Finally, the unified identity authentication and the access control on the business level are implemented separately. In the unified identity authentication module, based on an improved Kerberos-based authentication approach, a new control transfer method is proposed to solve the sharing problem of tickets among different servers of different departments. In the access control module, the functions of access controls are divided into different granularities to make the access control management more flexible. Moreover, the access control module has significant reference value for user management in similar systems.
基金Supported by Humanities and Social Science Research Project of the Ministry of Education"Study on the Structural Reform of Agricultural Supply Front in Poverty Stricken Areas under the Dual Objectives of Ecological Protection and Poverty Reduction"(17YJAZH101)Key Project of Wudang Culture Research and Communication Center,Key Research Base of Humanities and Social Sciences in Universities of Hubei Province"Breakthrough Innovation,Technical Compensation and Redevelopment of Traditional Industries in Danjiangkou Water Source Area"(17wdjd003)Project of Humanities and Social Science Foundation of Hubei Provincial Department of Education"Study on the Structural Reform of Agricultural Supply Front in Danjiang Reservoir Area of Hubei Province under the Dual Objectives of Water Source Protection and Poverty Reduction"(18D059)
文摘The promotion of precise poverty alleviation in poverty-stricken areas will inevitably lead to changes in local folk customs.The economic development may bring about greater development of folk customs,and may also lead to qualitative changes in folk customs.This paper mainly introduced the impact of the precise poverty alleviation on the folk customs.Based on the analysis,it came up with pertinent control measures,to better combine the folk customs with precise poverty alleviation measures,to promote common development of economy and culture in poverty stricken areas.
文摘在新型电力系统中,亟待深度挖掘需求侧资源以提升系统灵活性和新能源消纳能力。在“新基建”背景下,5G基站作为一种新型需求侧资源正迅速发展。研究如何在保证基站备用需求的前提下,由铁塔公司组建含大规模5G基站的虚拟电厂(virtual power plant,VPP)并常态化参与需求响应。首先,提出了考虑储能动态备用容量的5G基站运行可行域构建方法,建立了5G基站VPP的聚合模型。然后,建立了5G基站VPP响应负荷准线的日前优化模型,提出了适合对大规模5G基站进行协调控制的日内解聚合方法。最后,建立了含高比例新能源的区域电网仿真算例。仿真结果表明,聚合大规模基站参与准线型需求响应,可以显著降低5G基站的运行成本,同时提高电网的新能源消纳能力。
