The traditional dynamic characteristic analysis of the multi-stage centrifugal pump rotor system is developed assuming the bearing structural parameters with constant values.However, the manufacturing errors will cause the structural parameters to vary around their nominal values and then affect the dynamic characteristics of the bearing-rotor syst
We study the coevolutionary dynamics of network topology and social complex contagion using a threshold cascade model.Our coevolving threshold model incorporates two mechanisms: the threshold mechanism for the spreading of a minority state such as a new opinion, idea, or innovation and the network plasticity, implemented as the rewiring of links to
Urban growth needs large cities, and the current emphasis on landscape preservation makes using underground spaces an opportunity and a significant necessity.However, underground construction techniques significantly impact the sustainability of the built environment, including infrastructure systems and their entire supply chains.Nowadays, there i