At the Houston Museum of Natural Science they recently made a disturbing discovery: their Foucault pendulum had stopped swinging for the first time since its installation in the 1970s. (Video, ...

Abstract: This paper introduces in detail the origin of the development of automatic control methods, applications and current research hotspots. It also introduces some control methods commonly used ...

Abstract: Inverted pendulum systems (IPSs) are typically nonlinear, highly coupled, multivariable underactuated systems. Due to their complex control characteristics, they have become a research focus ...

The simulation hypothesis — the idea that our universe might be an artificial construct running on some advanced alien computer — has long captured the public imagination. Yet most arguments about it ...