What is the applicability of "Leadership's effect on safety culture" by Lundell, M. A., & Marcham, C. L, "New Employees and Safety Culture: A Social Cognitive Theory" by O'Kelley, K, "Serious Injuries & Fatalities: Why are They Constant While Injury Rates" by Busch, C. R. A. C., Usrey, C., Loud, J., Goodell, N., & Carrillo, R. A, "Unsafe Behavior: Rethinking the Concept" by Gantt, R., and the "READY TO LEAD SAFETY DIFFERENTLY" by Walaski, P?