The security issue is always the most important concern of networked client-server application. On the putpose to build the secure group communication among of a group of client users and one server, in this paper, we...The security issue is always the most important concern of networked client-server application. On the putpose to build the secure group communication among of a group of client users and one server, in this paper, we will present a new password-based group key agreement protocol. Our protocol will meet simplicity, efficiency, and many desired security properties.展开更多
目的探讨基于Cox健康行为互动模式(interaction model of client health behavior,IMCHB)的心理护理联合疼痛护理小组模式应用于带状疱疹患者中的效果。方法方便选取2021年9月—2023年9月山东省泰安市中心医院收治的82例带状疱疹患者为...目的探讨基于Cox健康行为互动模式(interaction model of client health behavior,IMCHB)的心理护理联合疼痛护理小组模式应用于带状疱疹患者中的效果。方法方便选取2021年9月—2023年9月山东省泰安市中心医院收治的82例带状疱疹患者为研究对象,依据不同护理方法分为两组,各41例。对照组采取常规护理,观察组实施基于IMCHB的心理护理联合疼痛护理小组模式护理,两组均连续护理1周。比较两组患者心理状态、疼痛程度、舒适度以及生活质量。结果护理后,观察组患者健康问卷、广泛性焦虑障碍量表评分分别为(12.33±1.84)分、(9.19±1.44)分,均低于对照组的(15.51±1.96)分、(12.76±1.52)分,差异均有统计学意义(t=7.574,10.918;P均<0.05)。护理后,观察组两项疼痛评分及生活质量评分低于对照组,舒适度评分高于对照组,差异均有统计学意义(P均<0.05)。结论基于IMCHB的心理护理联合疼痛护理小组模式可缓解带状疱疹患者负面情绪,改善其疼痛程度和舒适度,促进患者生活质量提升。展开更多
This paper describes the development of the condition monitoring and faultdiagnosing system of a group of rotating machinery. The data management is performed by means ofdouble redundant data bases stored simultaneous...This paper describes the development of the condition monitoring and faultdiagnosing system of a group of rotating machinery. The data management is performed by means ofdouble redundant data bases stored simultaneously in both the analyzing server and monitoringclient. In this way, high reliability of the storage of data is guaranteed. Condensation of trenddata releases much space resource of the hard disk. Diagnosing strategies orientated to differenttypical faults of rotating machinery are developed and incorporated into the system. Experimentalverification shows that the system is suitable and effective for condition monitoring and faultdiagnosing for a rotating machine group.展开更多
为了在数据密集型工作流下有效降低缓存碎片整理开销并提高缓存命中率,提出一种持久性分布式文件系统客户端缓存DFS-Cache(Distributed File System Cache)。DFS-Cache基于非易失性内存(NVM)设计实现,能够保证数据的持久性和崩溃一致性...为了在数据密集型工作流下有效降低缓存碎片整理开销并提高缓存命中率,提出一种持久性分布式文件系统客户端缓存DFS-Cache(Distributed File System Cache)。DFS-Cache基于非易失性内存(NVM)设计实现,能够保证数据的持久性和崩溃一致性,并大幅减少冷启动时间。DFS-Cache包括基于虚拟内存重映射的缓存碎片整理机制和基于生存时间(TTL)的缓存空间管理策略。前者基于NVM可被内存控制器直接寻址的特性,动态修改虚拟地址和物理地址之间的映射关系,实现零拷贝的内存碎片整理;后者是一种冷热分离的分组管理策略,借助重映射的缓存碎片整理机制,提升缓存空间的管理效率。实验采用真实的Intel傲腾持久性内存设备,对比商用的分布式文件系统MooseFS和GlusterFS,采用Fio和Filebench等标准测试程序,DFS-Cache最高能提升5.73倍和1.89倍的系统吞吐量。展开更多
基金Supported by the National Natural Science Foun-dation of China (60572155) the National Natural Science Founda-tion of China for Distinguished Young Scholars (60225007)
文摘The security issue is always the most important concern of networked client-server application. On the putpose to build the secure group communication among of a group of client users and one server, in this paper, we will present a new password-based group key agreement protocol. Our protocol will meet simplicity, efficiency, and many desired security properties.
文摘目的探讨基于Cox健康行为互动模式(interaction model of client health behavior,IMCHB)的心理护理联合疼痛护理小组模式应用于带状疱疹患者中的效果。方法方便选取2021年9月—2023年9月山东省泰安市中心医院收治的82例带状疱疹患者为研究对象,依据不同护理方法分为两组,各41例。对照组采取常规护理,观察组实施基于IMCHB的心理护理联合疼痛护理小组模式护理,两组均连续护理1周。比较两组患者心理状态、疼痛程度、舒适度以及生活质量。结果护理后,观察组患者健康问卷、广泛性焦虑障碍量表评分分别为(12.33±1.84)分、(9.19±1.44)分,均低于对照组的(15.51±1.96)分、(12.76±1.52)分,差异均有统计学意义(t=7.574,10.918;P均<0.05)。护理后,观察组两项疼痛评分及生活质量评分低于对照组,舒适度评分高于对照组,差异均有统计学意义(P均<0.05)。结论基于IMCHB的心理护理联合疼痛护理小组模式可缓解带状疱疹患者负面情绪,改善其疼痛程度和舒适度,促进患者生活质量提升。
文摘This paper describes the development of the condition monitoring and faultdiagnosing system of a group of rotating machinery. The data management is performed by means ofdouble redundant data bases stored simultaneously in both the analyzing server and monitoringclient. In this way, high reliability of the storage of data is guaranteed. Condensation of trenddata releases much space resource of the hard disk. Diagnosing strategies orientated to differenttypical faults of rotating machinery are developed and incorporated into the system. Experimentalverification shows that the system is suitable and effective for condition monitoring and faultdiagnosing for a rotating machine group.
文摘为了在数据密集型工作流下有效降低缓存碎片整理开销并提高缓存命中率,提出一种持久性分布式文件系统客户端缓存DFS-Cache(Distributed File System Cache)。DFS-Cache基于非易失性内存(NVM)设计实现,能够保证数据的持久性和崩溃一致性,并大幅减少冷启动时间。DFS-Cache包括基于虚拟内存重映射的缓存碎片整理机制和基于生存时间(TTL)的缓存空间管理策略。前者基于NVM可被内存控制器直接寻址的特性,动态修改虚拟地址和物理地址之间的映射关系,实现零拷贝的内存碎片整理;后者是一种冷热分离的分组管理策略,借助重映射的缓存碎片整理机制,提升缓存空间的管理效率。实验采用真实的Intel傲腾持久性内存设备,对比商用的分布式文件系统MooseFS和GlusterFS,采用Fio和Filebench等标准测试程序,DFS-Cache最高能提升5.73倍和1.89倍的系统吞吐量。
