Cepheid variable stars exhibit regular pulsations whose period directly correlates with their intrinsic brightness (absolute luminosity). The Leavitt law establishes this relationship between ...

This is a preview. Log in through your library . Abstract Data Envelopment Analysis has now been extensively applied in a range of empirical settings to identify relative inefficiencies, and provide ...

This is a preview. Log in through your library . Abstract This study evaluated 928 students over a period of two 16-week semesters. Attendance, gender, classification, and major were recorded for all ...

SPOILER ALERT: If you haven’t yet taken our Science Knowledge Quiz, please do so before reading this any further because we give away one of the answers. In a recent survey of what Americans know ...

Researchers have created a panel of genetically diverse mice that accurately model the highly variable human response to SARS-CoV-2 infection. The team uncovered differences in the innate immune and ...

Excel is incredibly powerful when your data is complete, but what happens when you need to solve for unknown variables? Enter Goal Seek and the Solver add-in, two tools that let Excel do the heavy ...