COVID-19 1 China 1 MHO staff 1 Psychology 1 accidental life insurance 1 campus signal 1 coping behaviors 1 cross-validation 1 disaster awareness 1 disaster experience disaster preparedness 1 emergency preparedness behavior 1 hazard of disaster-causing factors 1 multiple disasters 1 organizational identification 1 pandemic 1 place attachment 1 psychological capital 1 public sentiment 1 risk perception 1 self-efficacy 1 simulation and control 1 social networks 1 structural equation model 1 structural regression model 1 system dynamics 1 theory of planned behavior 1 training 1 trust 1 volunteering 1