the trait of being dependable or reliable.

The degree to which a product is operable and capable of performing its required function at any randomly chosen time during its specified operating time, provided that the product is available at the start of that period. (Nonoperation related influences are not included.) Dependability can be expressed by the ratio: time available divided by (time available + time required).

A measure of how consistent the results obtained in an assessment are in a criterion-referenced evaluation; consistency of decisions in relation to prespecified standards (see Reliability).

that property of a computer system such that reliance can justifiably be placed on the service it delivers [ Barbacci 95].

Being able to account for changes in the design of the study and the changing conditions surrounding what was studied.

the degree to which a policy instrument ensures that a prestated policy target will be achieved irrespective of changes in technology, price or political circumstance.

The extent to which a volunteer turns up for and completes tasks that they have been rostered for and agree to do.

fulfilling what you consented to do even if it means unexpected sacrifice.