The purpose of this study is to estimate the COVID-19 reproduction rate, vaccination coverage and forecast the next 20 days, which is useful as an anticipatory step for the COVID-19 pandemic. The benefits of research as a consideration in efforts to stop the spread of COVID-19. The method used...

Collective behavior is a phenomena emerged from interacting elements of a complex system. This paper is a preliminary study for the spatial analysis to investigate the spatial characteristics from the correlations within election data. We demonstrate the emerged scale-free spatial correlation by...