A new MOF [Li2（muc）（H2O）2] （1,H2muc = mucic acid） has been synthesized and characterized. 1 crystallizes in the monoclinic system,space group P21/c with a = 4.7884（1）,b = 19.4618（5）,c = 5.3639（2） ,β = 96....A new MOF [Li2（muc）（H2O）2] （1,H2muc = mucic acid） has been synthesized and characterized. 1 crystallizes in the monoclinic system,space group P21/c with a = 4.7884（1）,b = 19.4618（5）,c = 5.3639（2） ,β = 96.628（2）°,V = 496.53（2） 3,Z = 2,Mr = 258.04,Dc = 1.726 Mg/m3,F（000） = 268,μ = 0.164 mm-1,the final R = 0.0311 and wR = 0.0845 for 946 observed reflections with I 〉2σ（Ⅰ）. The 2D undulating layers are extended into a 3D supramolecular network via hydrogen bonds. The 2D layer structure can be rationalized as an unusual binodal 4-connected network with kgm topology. Cyclic voltammetry curves exhibit one pair of redox peaks and two reduction waves.展开更多
Content-based routing（CBR） publish/subscribe（P/S） system is an important class of distributed systems.This system differs from classical paradigms as messages are routed based on their content rather than their de...Content-based routing（CBR） publish/subscribe（P/S） system is an important class of distributed systems.This system differs from classical paradigms as messages are routed based on their content rather than their destination address,so as to provide a fine-granularity event dissemination,and support more flexibility decoupling applications.Covering-based routing is a typical optimization method of CBR and has been widely used as a building block in many distributed P/S systems,for it maintains a compact routing table and reduces the costs of communications and matching computations.So far as we know,this optimization method can only be implemented on acyclic overlay network,but cannot be directly utilized on cyclic networks.As the CBR in cyclic systems becomes a new focus of research,developing covering-based protocols and algorithms for cyclic P/S system is becoming significantly important.This paper contributes the cyclic covering-based routing protocol with corresponding algorithms to support covering-based protocol in cyclic P/S system,and implements it in PADRES,a distributed event management infrastructure based on the publish/subscribe model.展开更多
基金supported by the Science and Technology Department of Zhejiang Province (2007C21174)
文摘A new MOF [Li2（muc）（H2O）2] （1,H2muc = mucic acid） has been synthesized and characterized. 1 crystallizes in the monoclinic system,space group P21/c with a = 4.7884（1）,b = 19.4618（5）,c = 5.3639（2） ,β = 96.628（2）°,V = 496.53（2） 3,Z = 2,Mr = 258.04,Dc = 1.726 Mg/m3,F（000） = 268,μ = 0.164 mm-1,the final R = 0.0311 and wR = 0.0845 for 946 observed reflections with I 〉2σ（Ⅰ）. The 2D undulating layers are extended into a 3D supramolecular network via hydrogen bonds. The 2D layer structure can be rationalized as an unusual binodal 4-connected network with kgm topology. Cyclic voltammetry curves exhibit one pair of redox peaks and two reduction waves.
基金supported by the National Natural Science Foundation of China under Grant Nos.61070027,60752001the National Basic Research 973 Program of China under Grant No.2007CB310805+3 种基金the National High-Tech Research and Development 863 Program of China under Grant No.2006AA01A106the Beijing Science and Technology Plan Projects under Grant No.Z09000100960907the Beijing Natural Science Foundation under Grant No.4092043the Co-Building Program of Beijing Municipal Education Commission
文摘Content-based routing（CBR） publish/subscribe（P/S） system is an important class of distributed systems.This system differs from classical paradigms as messages are routed based on their content rather than their destination address,so as to provide a fine-granularity event dissemination,and support more flexibility decoupling applications.Covering-based routing is a typical optimization method of CBR and has been widely used as a building block in many distributed P/S systems,for it maintains a compact routing table and reduces the costs of communications and matching computations.So far as we know,this optimization method can only be implemented on acyclic overlay network,but cannot be directly utilized on cyclic networks.As the CBR in cyclic systems becomes a new focus of research,developing covering-based protocols and algorithms for cyclic P/S system is becoming significantly important.This paper contributes the cyclic covering-based routing protocol with corresponding algorithms to support covering-based protocol in cyclic P/S system,and implements it in PADRES,a distributed event management infrastructure based on the publish/subscribe model.
