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 ...

Synopsis: This paper examines how rack and pinion drives compare to linear motors and ball screws. Four key areas are examined: Linear Motion, Ball Screws, Backlash and Electronic ...

Rack-and-pinion drives, another type of linear motion device, get no respect. But they are perfectly capable of competing with the other two “stars” and have their own advantages.

In this paper we estimate a complete system of demand equations making full use of the restrictions implied by economic theory. Our theoretical model is based on the Klein-Rubin linear expenditure ...