This document discusses two productivity models: Logistical Entropy and Average Time for Job Completion. Logistical Entropy is a function that models productivity based on capital, labor, energy, materials, services, and technology inputs over time. It describes how these factors are defined and measured for government spending. Average Time for Job Completion lists the average times spent on various supply chain tasks in a hospital including scanning, computer usage, cleaning, checking expiration dates, picking supplies, transporting products, phone calls, and research.