input measures in a sentence

1. There are both advantages and disadvantages associated with the different input measures that are used in the calculation of labour productivity.
2. Denominator of the ratio of labour productivity, the input measure is the most important factor that influences the measure of labour productivity.
3. In Library Journal, Oregon State Librarian Jim Scheppke notes that the statistics that HAPLR relies on are misleading because they rely too much on output measures, such as circulation, funding, etc . and not on input measures, such as open hours and patron satisfaction.
4. It's difficult to find input measures in a sentence.