Guangtian Zhu

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This paper studies the asymptotic stability of a repairable system with repair time of failed system that follows arbitrary distribution. We show that the system operator generates a positive C 0-semigroup of contraction in a Banach space, therefore there exists a unique, nonnegative, and time-dependant solution. By analyzing the spectrum of system operator(More)
RDF (Resource Description Framework) data are more and more prevalent in the applications of semantic web and web data publication. The search over Web scale RDF data is essential for users to retrieve desired information from the huge RDF datasets, which typically applied as knowledge bases supporting many advanced information seeking tasks. In this paper,(More)
We develop an age-structured epidemic model for malaria with impulsive effect, and consider the effect of blood transfusion and infected-vector transmission. Transmission rates depend on age. We derive the condition in which eradication solution is locally asymp-totically stable. The condition shows that large enough pulse reducing proportion and relatively(More)