A repeating fast radio burst (FRB), FRB 20180916B (hereafter 180916), was reported to have a 16.35-day period. This period might be related precession In this paper, we investigate two models explain the periodic activity of 180916. both models, emission 180916 is produced by precessing jet. For first disk-driven jet model, an extremely low viscous parameter (i.e., dimensionless viscosity α ≲ 1...

Practice can dramatically reduce dual-task interference, but typically does not eliminate interference entirely. Residual interference after practice is especially large with certain non-preferred modality pairings (e.g., auditory-manual and visual-vocal). Does this residual interference imply the existence of a persistent central-processing bottleneck? To address this question, we transferred ...