Hongguang Li

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Keywords: Preventive maintenance policy Imperfect preventive maintenance Extended proportional hazards model Variable operational conditions a b s t r a c t This paper develops two component-level control-limit preventive maintenance (PM) policies for systems subject to the joint effect of partial recovery PM acts (imperfect PM acts) and variable(More)
Research and development in microelectromechanical systems (MEMS) have made remarkable progress since the advent of the first electrostatic micromotor in 1987. Considerable efforts have been directed to the investigation of the failure mechanisms and reliability of electrostatic micromotors. This paper provides a brief overview of failure modes and(More)
Along with the cloud computing theory playing a significant role in business increasingly, the cloud computing theory is applied in many trades wider and deeper. The text starts from analyzing the basic theory and application of the cloud computing, to combine characteristics of the emergent material support, to apply the cloud computing theory the emergent(More)
BACKGROUND We explored the relationship of interferon-γ (IFN-γ) and MHC class-I chain related gene A (MICA) genes polymorphisms with hepatocellular carcinoma (HCC) risk, and tried to determine whether the interaction existed between these two genes polymorphisms on the basis of HCC. MATERIAL AND METHODS Polymerase chain reaction-restriction fragment length(More)
OBJECTIVES To evaluate the clinical characteristics and radiological features of solid pseudopapillary tumor (SPT) and assess surgical therapy strategy. METHODS A retrospective review was performed in 62 patients pathologically confirmed of SPT treated between 2003 and 2014. The clinical features, radiological examinations and surgical strategies were(More)