As some researchers commented, modeling the trajectory of the ongoing coronavirus disease 2019 (COVID-19) pandemic is like chasing a moving target. The severe acute respiratory syndrome coronavirus 2 ...

A slide and compound drilling model calculates build-up rate (BUR) of a single bent-angle motor assembly using a physical model and genetic-algorithm back propagation (GA-BP) regression analysis. A ...

The coronavirus disease 2019 (COVID-19) pandemic has proven especially difficult to model accurately. In the early days, as the disease first spread around the world, public health policies changed ...

Computer modeling techniques play an important role in predicting the movement of volcanic ash clouds. Three primary computer models are currently in use. The first is the Volcanic Ash Forecast ...