The simplest positive-feedback loop is positive auto-regulation (Fig. 1B), whereby a transcriptional activator (here, X) initiates its own expression; an example of such a transcriptional activator is the myogenic determination factor MyoD1 (Thayer et al., 1989).
The projects we are supporting demonstrate how simple, positive technological interventions can create momentous, positive change.
These were simple, positive motions; the car responded by lunging forward with a roar.
Dead cats are the sort of thing normally described in simple positive terms.
However, most HTS techniques are simple positive screenings.
where is the unique simple positive root of the equation.
One of the clearest examples is double negation versus simple positive assertion.
It is clear that (h(I =0) has a simple positive root, which we denote by (I_{2}).
Besides the simple positive or negative phenomena, high number of patients have also reported some form of complex visual disturbances.
We here record the systems of simple positive roots that we will use later (in Sect. 5.4).
Many sporting dog trainers use shock collars and whips; Stewart prefers simple positive reinforcement, sternly delivering directions with a crisp "Good" or "No".
