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Mode locking. Mode locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10 −12 s) or femtoseconds (10 −15 s). A laser operated in this way is sometimes referred to as a femtosecond laser, for example, in modern refractive surgery.
Read-copy-update. In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and update elements that are linked through pointers and that belong to shared data structures (e.g., linked lists, trees, hash tables). [1]
File locking. File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time and to prevent reading of the file while it's being modified or deleted. Systems implement locking to prevent the classic interceding update scenario, which ...
Lockout–tagout. Lockout Tagout hasp can accommodate up to 6 padlocks, can be used during group LOTO procedure. Lock out, tag out or lockout–tagout (LOTO) is a safety procedure used to ensure that dangerous equipment is properly shut off and not able to be started up again prior to the completion of maintenance or repair work.
A password to encrypt a document restricts opening and viewing it. This is possible in all Microsoft Office applications. Since Office 2007, they are hard to break if a sufficiently complex password was chosen. [citation needed] If the password can be determined through social engineering, the underlying cipher is not important.
In computer science, multiple granularity locking ( MGL) is a locking method used in database management systems (DBMS) and relational databases . In multiple granularity locking, locks are set on objects that contain other objects. MGL exploits the hierarchical nature of the contains relationship. For example, a database may have files, which ...