The standard interpretation of a null state, or empty state, posits it as devoid of structure. This paper introduces a ...

This study presents valuable findings from a spatiotemporal analysis of arbovirus case notification data from 2013 to 2020 in Brazil, reporting associations between covariates representing potential ...

Gold ETFs provide easy access to physical gold or gold mining stocks. Investors should choose large ETFs with low expense ratios under 1% for safer investments. Physical gold ETFs are less risky than ...