Only one study [ 48] used an active control group, in comparison with an inactive control group.
The study is a randomized controlled trial, including an intervention group and an active control group.
James Lovelock's Gaia hypothesis conceives of the planet as an active control system.
Anderson says making a prototype regenerative shock absorber has involved coming up with an active control system for smooth damping.
Most of the studies are pilot studies, and many lack an "active control" — a kind of meditative sugar pill, to guard against the placebo effect.
The 1 Hz stimulation was intended as an active control.
But he worries that an active control may cause problems.
In this article, we proposed an active control for controlling the chaotic fractional order Rössler system.
Not just a control group, but an active control group would have been ideal.
This study proposes an active control method to suppress the responses of structural systems.
This paper documents the experimental validation of an active control approach for mitigating chatter in milling.
