• Korean Journal of Logic
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• v.15 no.3
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• pp.307-322
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• 2012

It is demonstrated that there is a simple, canonical way to show the independency of the Friedman-style miniaturization of Kruskal's theorem with respect to $(\prod_{2}^{1}-BI)_0$. This is done by a non-trivial combination of some well-known, non-trivial previous works concerning directly or indirectly the (proof-theoretic) strength of Kruskal's theorem.

• Journal of the Korea Convergence Society
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• v.13 no.3
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• pp.91-103
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• 2022

This study surveyed 101 occupational therapists who were performing occupational therapy before and after the COVID-19 outbreak to compare their perceptions and performance of hand washing, use of personal protective equipment, and infection control of surrounding environment. Mann-Whitney U test, Kruskal wallis H test, Wilcoxon signed-rank test, Pearson's correlation coefficient were used analyzed. As a result, it was confirmed that they received better infection control education after the outbreak compared to before the outbreak of COVID-19, and their experience with infectious diseases was lower. In addition, it was found that the perception and performance of infection control in hand washing, personal protective equipment, and surrounding environment cleaning were improved after the outbreak compared to before the outbreak of COVID-19. However, to this day, hand washing for more than 40 seconds in running water recommended by the Korea Centers for Disease Control and Prevention, cleaning the treatment room, and disinfection of treatment tools are still in need of improvement. Through this study, infection control education should be repeated regularly to minimize the occurrence of infectious diseases, and It will be a basic data that can be used in infection control education and follow-up studies for occupational therapists in the future.