"Once the crossing becomes active, when the bells and the lights start to flash on the mast, traffic is required to stop," said Robert Accetta, the transportation board's investigator in charge in Midland.
Collisions are simulated using special purpose contact elements that become active when the corresponding nodes come into contact.
However, the results indicate that input constraints will become active when the controller responds to transient behavior from the steam flow disturbance.
There is evidence that visual cortex can become active when the congenitally blind experience imagery (Lambert et al., 2004; De Volder et al., 2001), but this may be because so called visual cortex takes on non-visual responsibilities in the blind (Kujala et al., 1995; Röder et al., 1995; Raz et al., 2005).
In fertilised queens, the ovaries only become active when the queen starts to lay.
When you decide you don't want or need one or more of the tickets you've purchased, you can add it to a resale pool that only becomes active when the event sells out of original tickets.
Furthermore, only less familiar words in the less familiar language showed this pattern, suggesting that these regions may become active when the initial task of identifying words is more difficult [14], [15].
However, latent TB may become active when the immune system is weakened.
For example, as a rat runs around a maze, some place cells will become active when the rat reaches one corner.
