We consider two non-interacting systems embedded in a heat bath. If they remain dynamically independent, physical inconsistencies are avoided only if the single-system reduced dynamics is completely positive also beyond the weak-coupling limit.

Rolling element bearing failure is one of the foremost causes of breakdown in rotating machinery. It is not uncommon to replace a defected/used bearing with a new one that has shorter remaining useful life than the defected one. Thus, prognostics of bearing plays critical role for increased availability and reduced cost. Effective prognostics highly depend on the quality of the extracted featur...

A Correction to this paper has been published: 10.1007/s40505-021-00211-1

The application of 2,5-dimethylfuran (DMF) as an alternative fuel for internal combustion engines has been gaining popularity. However, it rarely studied in previous research on the chemical kinetics DMF engine simulations. In present study, a reduced n-heptane/toluene/DMF-polycyclic aromatic hydrocarbon (PAH) reaction mechanism containing only 78 species amongst 190 reactions was proposed and ...

A reduced mechanism of diesel fuel was developed on the basis Wang’s mechanism. First, for removing unimportant reactions, an importance index defined computational singular perturbation (CSP). Choosing 0.0065, 140 reactions were removed, and obtained a smaller 403 elementary reactions. Second, 32 global quasi-steady-state (QSS) species found with threshold value 0.005. Finally, smallest contai...