Prior research on the resilience of critical infrastructure usually utilizes the network model to characterize the structure of the components so that a quantitative representation of resilience can be obtained. Parti...Prior research on the resilience of critical infrastructure usually utilizes the network model to characterize the structure of the components so that a quantitative representation of resilience can be obtained. Particularly, network component importance is addressed to express its significance in shaping the resilience performance of the whole system. Due to the intrinsic complexity of the problem, some idealized assumptions are exerted on the resilience-optimization problem to find partial solutions. This paper seeks to exploit the dynamic aspect of system resilience, i.e., the scheduling problem of link recovery in the post-disruption phase.The aim is to analyze the recovery strategy of the system with more practical assumptions, especially inhomogeneous time cost among links. In view of this, the presented work translates the resilience-maximization recovery plan into the dynamic decisionmaking of runtime recovery option. A heuristic scheme is devised to treat the core problem of link selection in an ongoing style.Through Monte Carlo simulation, the link recovery order rendered by the proposed scheme demonstrates excellent resilience performance as well as accommodation with uncertainty caused by epistemic knowledge.展开更多
In order to study the vulnerability of statically indeterminate structures,the rigid-frame structure was taken for example. The equation of redundant restriction matrix about rigid-frame structure was deduced by the p...In order to study the vulnerability of statically indeterminate structures,the rigid-frame structure was taken for example. The equation of redundant restriction matrix about rigid-frame structure was deduced by the principle of statistics and the minimum potential energy, which could obtain the redundancy matrix. Properties of the redundancy matrix were analyzed,and the practical example mainly introduced the analytic approach of structural system vulnerability. Finally, the direction of further study was pointed out. The study indicates that the structural system vulnerability can be properly reflected by the analysis of the redundancy matrix.展开更多
China has removed import tariffs from components of two types of textile machines to encourage domestic textilefirms to develop machinery of their own.
基金supported by the National Natural Science Foundation of China(51479158)the Fundamental Research Funds for the Central Universities(WUT:2018III061GX)
文摘Prior research on the resilience of critical infrastructure usually utilizes the network model to characterize the structure of the components so that a quantitative representation of resilience can be obtained. Particularly, network component importance is addressed to express its significance in shaping the resilience performance of the whole system. Due to the intrinsic complexity of the problem, some idealized assumptions are exerted on the resilience-optimization problem to find partial solutions. This paper seeks to exploit the dynamic aspect of system resilience, i.e., the scheduling problem of link recovery in the post-disruption phase.The aim is to analyze the recovery strategy of the system with more practical assumptions, especially inhomogeneous time cost among links. In view of this, the presented work translates the resilience-maximization recovery plan into the dynamic decisionmaking of runtime recovery option. A heuristic scheme is devised to treat the core problem of link selection in an ongoing style.Through Monte Carlo simulation, the link recovery order rendered by the proposed scheme demonstrates excellent resilience performance as well as accommodation with uncertainty caused by epistemic knowledge.
文摘In order to study the vulnerability of statically indeterminate structures,the rigid-frame structure was taken for example. The equation of redundant restriction matrix about rigid-frame structure was deduced by the principle of statistics and the minimum potential energy, which could obtain the redundancy matrix. Properties of the redundancy matrix were analyzed,and the practical example mainly introduced the analytic approach of structural system vulnerability. Finally, the direction of further study was pointed out. The study indicates that the structural system vulnerability can be properly reflected by the analysis of the redundancy matrix.
文摘China has removed import tariffs from components of two types of textile machines to encourage domestic textilefirms to develop machinery of their own.
