Identity authentication plays an important role in ad hoc networks as a part of the secure mechanism. On the basis of GQ signature scheme, a new GQ threshold group signature scheme was presented, by which a novel dist...Identity authentication plays an important role in ad hoc networks as a part of the secure mechanism. On the basis of GQ signature scheme, a new GQ threshold group signature scheme was presented, by which a novel distributed algorithm was proposed to achieve the multi-hop authentication for mobile ad hoc networks. In addition, a protocol verifying the identity with zero knowledge proofs was designed so that the reuse of certificates comes into truth. Moreover, the security of this algorithm was proved through the random oracle model. With the lower cost of computation and communication, this algorithm is efficient, secure and especially suitable for mobile ad hoc networks characterized by distributed computing, dynamic topology and multi-hop communications.展开更多
IP网络的服务质量问题是业界研究的热点,资源和准入控制子系统(Resource and Admission Control Sub-sys-tem,RACS)使得端到端的IP服务质量保证变得可能.Gq’接口是为RACS子系统中应用层功能实体(Application Function entity,AF)与资...IP网络的服务质量问题是业界研究的热点,资源和准入控制子系统(Resource and Admission Control Sub-sys-tem,RACS)使得端到端的IP服务质量保证变得可能.Gq’接口是为RACS子系统中应用层功能实体(Application Function entity,AF)与资源管理实体业务策略决策功能(Service-based Policy Decision Function entity,SPDF)之间的信息交互而定义,文章提出了一种基于Diameter协议的Gq’接口服务器端实现方案,并测试表明该方案有效可行.展开更多
Problems concerning massive gluons have been investigated in recent years. In Ref. [2] it is assumed that gluons acquire masses through spontaneous breaking of the local color gauge symmetry while quasiconfinement of ...Problems concerning massive gluons have been investigated in recent years. In Ref. [2] it is assumed that gluons acquire masses through spontaneous breaking of the local color gauge symmetry while quasiconfinement of gluons and quarks are still maintained. This may be called a broken QCD scheme. In order to distinguish the broken QCD from conventional QCD experimentally, the decay rate and branching ratio for the process 1++→2G which is not allowed in conventional QCD were studied in Ref. (2)Instead of using the calculated decay rate of 1++→Gqq in conven-展开更多
Miller Fisher综合征(MFS)和Bickerstaff脑干脑炎(BBE)为临床少见疾病,两者是否为两种不同的疾病一直存在着争议。抗GQ1b抗体综合征的提出,将有着共同血清抗体的不同临床表现的这两种疾病概括为同一连续性疾病谱,促进了对MFS、BBE及相...Miller Fisher综合征(MFS)和Bickerstaff脑干脑炎(BBE)为临床少见疾病,两者是否为两种不同的疾病一直存在着争议。抗GQ1b抗体综合征的提出,将有着共同血清抗体的不同临床表现的这两种疾病概括为同一连续性疾病谱,促进了对MFS、BBE及相关疾病的认识。本文就有关MFS、BBE及抗GQ1b抗体综合征的发病机制、临床特征、诊断、治疗及预后等进行综述。展开更多
文摘Identity authentication plays an important role in ad hoc networks as a part of the secure mechanism. On the basis of GQ signature scheme, a new GQ threshold group signature scheme was presented, by which a novel distributed algorithm was proposed to achieve the multi-hop authentication for mobile ad hoc networks. In addition, a protocol verifying the identity with zero knowledge proofs was designed so that the reuse of certificates comes into truth. Moreover, the security of this algorithm was proved through the random oracle model. With the lower cost of computation and communication, this algorithm is efficient, secure and especially suitable for mobile ad hoc networks characterized by distributed computing, dynamic topology and multi-hop communications.
文摘IP网络的服务质量问题是业界研究的热点,资源和准入控制子系统(Resource and Admission Control Sub-sys-tem,RACS)使得端到端的IP服务质量保证变得可能.Gq’接口是为RACS子系统中应用层功能实体(Application Function entity,AF)与资源管理实体业务策略决策功能(Service-based Policy Decision Function entity,SPDF)之间的信息交互而定义,文章提出了一种基于Diameter协议的Gq’接口服务器端实现方案,并测试表明该方案有效可行.
文摘Problems concerning massive gluons have been investigated in recent years. In Ref. [2] it is assumed that gluons acquire masses through spontaneous breaking of the local color gauge symmetry while quasiconfinement of gluons and quarks are still maintained. This may be called a broken QCD scheme. In order to distinguish the broken QCD from conventional QCD experimentally, the decay rate and branching ratio for the process 1++→2G which is not allowed in conventional QCD were studied in Ref. (2)Instead of using the calculated decay rate of 1++→Gqq in conven-
