A flat fee, also referred to as a flat rate or a linear rate, refers to a pricing structure that charges a single fixed fee for a service, regardless of usage.[1] Less commonly, the term may refer to a rate that does not vary with usage or time of use.
Synchronous: interrupt occurs as a result of current process, otherwise asynchronous. User requested: interrupt occurs because of direct result by user task, otherwise coerced. Maskable: if desired the interrupt can be disabled by a user task, otherwise unmasked.
DMADV is an acronym for Define, Measure, Analyze, Design and Verify. The last 2 stages of the DMAIC process are replaced with Design and Verify to indicate that you design the best process and verify that it is the best process. A lot of companies will not use this acronym and prefer to keep DMAIC clearly stated.