Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

If you have experience with R or want a quick way to generate a regression with statsmodels using a pandas DataFrame, you can ...

In Philadelphia this year, it has been harder to get away with murder. Violent crime has fallen sharply, like it has in many other cities, and Philadelphia police are now solving homicides at the ...

For fans of The New York Times’ popular Connections puzzle, October 15, 2025, brings puzzle #791, offering a new set of sixteen words to sort. This well-liked word game asks players to find the hidden ...

For many, it's been years since they've sat in a classroom while a teacher tested their arithmetic skills. Internet users are now racking their brains to remember how to solve elementary school ...

Abstract: The quadratic knapsack problem (QKP) with constraints has been a focus of attention in combinatorial optimization, where traditional exact algorithms face difficulties in solving large-scale ...