A wonderfully fun study published in February 2022 asked a provocative question: what are the physiological determinants of trail running performance? The authors had me hooked in the abstract. So I ...

Full factorial DOE, or Design of Experiments, is a method of designed experimentation. Using this method you manipulate the controllable factors (independent variables or inputs) in your process at ...

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

The hypothesis that environmental variability promotes phytoplankton species diversity was investigated experimentally using phosphorus-limited continuous cultures. Variability was introduced as a ...

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 ...

A friend–we’ll call her Polly, short for Pollyanna, for reasons that will become obvious–is unrelentingly positive. Always cheerful. Always enthusiastic. She’s the happiest person I know. Except, ...