Communicating and mobile systems : the [symbol for pi]-calculus by Milner, R. (Robin), 1934-2010. ... The [pi]-calculus differs from other models of communicating behaviour mainly in its treatment of ...

The humble water gun — the cheap, squirt-squirt variety — has become the weapon of choice and symbol of Spain's anti-tourism protests. Activists say that it all started last year when some ...

From the column: "We started our time here in the midst of COVID and now leave with uncertainty. It’s a funny feeling." ...