Scientists have developed an exact approach to a key quantum error correction problem once believed to be unsolvable, and have shown that what appeared to be hardware-related errors may in fact be due ...

Abstract: The performance of a telegraph system using error detection and automatic repetition of signals is analyzed for several fading and noise conditions. At ...

This provided an easy way to check for errors, as the sum of debits would match the sum of credits. When a journal didn't balance in this way, the problem could be found and corrected prior to ...

A disabled woman almost certainly killed herself because she had been found “fit for work” and stripped of out-of-work disability benefits, according to a mental health watchdog. The Mental Welfare ...