Spinlocks are often identified as the locking mechanism of choice on multi-processor systems when the lock is to be held for a short duration. But whatexactly constitutes ashort duration? Given that waiting on a lock requirestwo context switches—a context switch to move the thread to the waitingstate and a second context switch to restore the waiting thread once the lockbecomes available—the general ruleis to use a spinlock if the lock will beheld for a duration of less than two context switches.

Tests by a California-based group led by Katherine P. Rankin indicate that the lobe may play a crucial role in identifying social context as well, including paralinguistic elements of verbal communication.

Damage to the PPA (for example, due to stroke) often leads to a syndrome in which patients cannot visually recognize scenes even though they can recognize the individual objects in the scenes (such as people, furniture, etc.).

PPA plays an important role in the encoding and recognition of environmental scenes (rather than faces). fMRI studies indicate that this region of the brain becomes highly active when human subjects view topographical scene stimuli such as images of landscapes, cityscapes, or rooms (i.e. images of "places").

The previously undisclosed dispute between the nation’s product safety regulator and Peloton — a $34 billion company famous for its stationary bicycles and online workouts — has so far taken place outside public view.

The Consumer Product Safety Commission this week took the unusual step of issuing an administrative subpoena to require Peloton to disclose the name of the child who died and the family’s contact information so regulators can continue an inquiry into what went wrong, according to officials who spoke on the condition of anonymity to discuss an ongoing investigation.

Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived, and so dedicated, can long endure. We are met on a great battle field of that war. We have come to dedi- cate a portion of it, as a final resting place for those who died here, that the nation might live. This we may, in all propriety do. But, in a larger sense, we can not dedicate — we can not consecrate — we can not hallow, this ground — The brave men, living and dead, who struggled here, have hallowed it, far above our poor power to add or detract. The world will little note, nor long remember what we say here; while it can never forget what they did here.