an arrangement of paths connected at various points (drawn as a diagram), through which an item (or items) moves from one point to another
a model that represents the flow of items through a system
in a network diagram, a point that represents a junction or an intersection; it is represented by a circle
the gradual receipt of inventory over time
a form of mathematical programming in which the objective function or constraints (or both) are nonlinear functions
a continuous probability distribution that has the shape of a bell
