He developed Pertecs, which is a rudimentary analog computer paradigm written in C.
http://tcode.auckland.ac.nz/~mark/Signal%20Processing%3A%20P...
He got me to write some code to compile schematic diagrams into the XML config files. He's also done something similar now to compile from LaTeX, and he ported the controller from a Mac Mini to a Raspberry Pi.
Pertecs is being used to control an artificial lung, which is used for research into obstructive sleep apnoea (snoring).
The problem is, he's retiring, and I'm probably the only other person in the world who knows how to use his program. I would move back there, but the immigration policy got more difficult (minimum salary of $75k), so I'm seriously wondering whether I should stay in Taiwan longer and try to naturalise here.