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Proportional hazard model (PHM) is a common reliability model in reliability engineering. This model considers the operating condition as covariates. The operating condition is assumed to affect the failure rate proportionally. In the state-of-art applications, this PHM is used as a data-driven model. Nevertheless, some literature argue the PHM has the advantage of physical explanation for its covariates...
Northern Norway has adverse geographical and weather condition in wintertime for road transport. Accidents occurs frequently in some areas and the safety of the transport in these areas has been a big concern. This paper analyze the reasons of the accidents and explore the economic and effective method to reduce the accidents. Considering the existing installed system preventing the accidents and...
Complex repairable system models address the dynamics of the failure and repair process. These models arecritical to the maintenance optimization. This paper firstly discusses different repair effectiveness. Imperfect repair is considered as the most frequently occurred repair effectiveness. Later on this paper surveys the developedimperfect repair models in state of art. It reveals current models...
By using sidewall electrode technology, both record small functional TiO2 selection device (1 × 5 nm2) and HfO2 based RRAM device (1 × 3 nm2) were for the first time successfully demonstrated in this work, improving the understanding of the switching mechanism in an ultra-small, functional resistive random access memory (RRAM) device. The tunneling based low temperature back-end selection devices...
A sidewall electrode technology was successfully developed for the first time in this study, improving the understanding of the working mechanism in an ultra small, functional HfO2-based resistive random access memory (RRAM) device (< 1 × 3 nm2). This technology exhibits potential for application in atomic-scale memories. The 1 × 3 nm2 RRAM device exhibited an excellent performance, featuring a...
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