The aim of the present study was to assess the construct validity of five nutrient profiling systems, using diet modeling with linear programming for designing healthy and unhealthy diets. 3 ...

In comparing long- and short-term commitments to fulfill demand for some kind of capacity, a linear formulation of the problem may prove useful. The general capacity-planning problem treated here is ...

We use the models of cognitive psychology and the early literature on linear programming models to understand how experts organize their thinking about models. We show that several different patterns ...