Proportional-integral-derivative (PID) is the most common industrial technology for closed-loop control. A proportional-integral-derivative (PID) controller can be used to control temperature, ...

We like mechanical calculators like slide rules, but we have to admit that we had not heard of the Ott Derivimeter that [Chris Staecker] shows us in a recent video. As the name implies, the ...

Postpartum depression affects some one in eight women in the United States. It typically occurs in the first weeks after ...

This is a preview. Log in through your library . Abstract Let A and B be n × n matrices. We show that the matrix representing the linear transformation $X \mapsto ...

Collinearity and near-collinearity of predictors cause difficulties when doing regression. In these cases, variable selection becomes untenable because of mathematical issues concerning the existence ...

If the mention of algebra conjures bad memories of math classes, a Python library called SymPy could change your mind about ...

Guerlain’s latest innovation, Abeille Royale Bee Lab Shot, targets deep wrinkles and revives radiance in only seven days.

After all the controversy over the past few years about gain-of-function research on viruses, especially the Covid-19 virus, I thought this kind of work was on hold, at least in the U.S. Indeed, the ...