I'm a big fan of Python for data analysis, but even I get curious about ... and lubridate for working with time-date data.

Abstract: This article proposes a model-free sliding mode control using dynamic gain time delay estimation (DGTDE) to improve the position tracking performance of permanent magnet linear synchronous ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...