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A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.
A kernel panic is the Unix equivalent of Microsoft's Blue Screen of Death. It is a routine called when the kernel detects irrecoverable errors in runtime correctness; in other words, when continuing the operation may risk escalating system instability, and a system reboot is easier than attempted recovery.
Circa 1908, Prinzler, Dupont and the Vonnegut Hardware Company entered into an arrangement providing for the manufacture, marketing and distribution of the patent protected hardware. Under the trade name Von Duprin (a blend of the three principals names, VONnegut, DUpont, PRINzler) the Von Duprin Safe Exit Device, as it was called, was ...
A safe room or panic room is a fortified room that is installed in a private residence or business to provide a safe shelter, or hiding place, ...
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Electric strikes for rim panic exit devices are sometimes, though not always, "no cut" electric strikes - no cutting, in reference to a rim panic strike, means the strike is bolted to the surface of jamb without cutting into the frame or modifying it in any way (except for the drilling and tapping of mounting screw and/or anchoring pins).
The basic assumption is that the hardware and the software should perform correctly and a failure of an assertion results in a panic, i.e. a voluntary halt to all system activity. [5] The kernel panic was introduced in an early version of Unix and demonstrated a major difference between the design philosophies of Unix and its predecessor Multics.
In the overturned plane, flight attendants helped passengers crawl out of open exit doors, urging people to leave belongings behind, though some still exited with bags in tow, video from Koukov shows.