A direct method is offered for numerical solution of free-horizon optimal control problems. The method first represents the problem with discrete dynamics. Next, given a fixed number of decisions, not only the decisions, but also the decision frequencies are optimised to construct the optimal...

This paper examines linkages between international trade, environmental degradation, and economic growth in a dynamic North-South trade game. Using a neoclassical production function subject to an endogenously improving technology, North produces manufactured goods by employing labor, capital,...