由于传统实验室预约系统缺少移动客户端,导致预约效果差。为满足高效预约效果,设计基于UML的实验室多模式自动预约系统。在应用表达层中利用后台SQL Server 2000数据库B/S结构模式,设计手机客户端,保证客户端能够脱机预约。依据业务流程...由于传统实验室预约系统缺少移动客户端,导致预约效果差。为满足高效预约效果,设计基于UML的实验室多模式自动预约系统。在应用表达层中利用后台SQL Server 2000数据库B/S结构模式,设计手机客户端,保证客户端能够脱机预约。依据业务流程,通过自动预约控制电路达到不同人员预约的目的。采用P89C669型号单片机设计以太网通信服务器,为数据层提供更大存储空间。数据层采用根节点与边之比为1∶1方式,实现数据集中控制。利用UML建立的实验实训预约顺序,设计数据库安全存储功能,通过单片机串口向GSM发送AT指令进行短信息接收与发送,依据自动预约流程完成自动预约系统设计。由实验结果可知,所设计系统最高预约效果可达到97%,具有实际应用价值。展开更多
with the increasing popularity of cloud services,attacks on the cloud infrastructure also increase dramatically.Especially,how to monitor the integrity of cloud execution environments is still a difficult task.In this...with the increasing popularity of cloud services,attacks on the cloud infrastructure also increase dramatically.Especially,how to monitor the integrity of cloud execution environments is still a difficult task.In this paper,a real-time dynamic integrity validation(DIV) framework is proposed to monitor the integrity of virtual machine based execution environments in the cloud.DIV can detect the integrity of the whole architecture stack from the cloud servers up to the VM OS by extending the current trusted chain into virtual machine's architecture stack.DIV introduces a trusted third party(TTP) to collect the integrity information and detect remotely the integrity violations on VMs periodically to avoid the heavy involvement of cloud tenants and unnecessary information leakage of the cloud providers.To evaluate the effectiveness and efficiency of DIV framework,a prototype on KVM/QEMU is implemented,and extensive analysis and experimental evaluation are performed.Experimental results show that the DIV can efficiently validate the integrity of files and loaded programs in real-time,with minor performance overhead.展开更多
文摘由于传统实验室预约系统缺少移动客户端,导致预约效果差。为满足高效预约效果,设计基于UML的实验室多模式自动预约系统。在应用表达层中利用后台SQL Server 2000数据库B/S结构模式,设计手机客户端,保证客户端能够脱机预约。依据业务流程,通过自动预约控制电路达到不同人员预约的目的。采用P89C669型号单片机设计以太网通信服务器,为数据层提供更大存储空间。数据层采用根节点与边之比为1∶1方式,实现数据集中控制。利用UML建立的实验实训预约顺序,设计数据库安全存储功能,通过单片机串口向GSM发送AT指令进行短信息接收与发送,依据自动预约流程完成自动预约系统设计。由实验结果可知,所设计系统最高预约效果可达到97%,具有实际应用价值。
基金Supported by the National Natural Science Foundation of China under Grant No. 61370068
文摘with the increasing popularity of cloud services,attacks on the cloud infrastructure also increase dramatically.Especially,how to monitor the integrity of cloud execution environments is still a difficult task.In this paper,a real-time dynamic integrity validation(DIV) framework is proposed to monitor the integrity of virtual machine based execution environments in the cloud.DIV can detect the integrity of the whole architecture stack from the cloud servers up to the VM OS by extending the current trusted chain into virtual machine's architecture stack.DIV introduces a trusted third party(TTP) to collect the integrity information and detect remotely the integrity violations on VMs periodically to avoid the heavy involvement of cloud tenants and unnecessary information leakage of the cloud providers.To evaluate the effectiveness and efficiency of DIV framework,a prototype on KVM/QEMU is implemented,and extensive analysis and experimental evaluation are performed.Experimental results show that the DIV can efficiently validate the integrity of files and loaded programs in real-time,with minor performance overhead.
