patients and methods a questionnaire was developed by a departmental checklist focus group, which aimed to identify the perception of health care checklists in general as well as specific checklists for routine and crisis situations in anesthesia. furthermore participants were asked regarding their perception of performing routine anesthesia and managing crisis situations without any cognitive ...

This paper empirically compares three estimation methods—regression, calibration, and principal person— used in a household survey for post-stratification. Posttratification is important in many household surveys to adjust for nonresponse and the population undercount that esults from frame deficiencies. The correction for population undercoverage is usually achieved by adjusting estimated peop...

It is known that the zero forcing number of a graph an upper bound for maximum nullity (see [AIM Minimum Rank - Special Graphs Work Group (F. Barioli, W. Barrett, S. Butler, Cioab$\breve{\text{a}}$, D. Cvetkovi$\acute{\text{c}}$, Fallat, C. Godsil, Haemers, L. Hogben, R. Mikkelson, Narayan, O. Pryporova, I. Sciriha, So, Stevanovi$\acute{\text{c}}$, H. van der Holst, K. Vander Meulen, and A. Wan...