In this paper, two different ring networks with unidirectional couplings and with bidirectional couplings were discussed by theoretical analysis. It was found that the effects on synchronizing ability of the two different structures by cutting a link are completely opposite. The synchronizing ability will decrease if the change is from bidirectional ring to bidirectional chain. Moreover, the change on synchronizing ability will be four times if the number of N is large enough. However, it will increase obviously from unidirectional ring to unidirectional chain. It will be N^2/（π^2） times if the number of N is large enough. The numerical simulations confirm the conclusion in quality. This paper also discusses the effects on synchronization by adding one link with different length d to these two different structures. It can be seen that the effects are different. Theoretical results are accordant to numerical simulations. Synchronization is an essential physics problem. These results proposed in this paper have some important reference meanings on the real world networks, such as the bioecological system networks, the designing of the circuit, etc.
针对目前不同Web服务注册管理标准之间(如UDDI,ebXML等)无法进行互操作的问题,运用元模型互操作框架(metamodel framework for interoperability,MFI)和本体技术,建立了一种支持语义互操作的Web服务注册管理模型的体系架构,运用MFI中的本体演化规则保证了本体在演化前后的一致性,从而保证基于本体的不同Web服务注册库的互操作性.构建了一个基于MFI的Web服务注册管理模型的原型系统,实验结果表明该原型系统的Web服务查全率比单一Web服务模型高.
