The Ramsey model of economic growth is revisited from the point of view of viability compared to optimality. A viable state is a state from which there exists at least one trajectory in capital, consumption, and reproduction that remains in the set of constraints of minimal consumption and...

The financial crisis that began in 2007 has brought to the fore the issues of excesses in lending, leverage, and risk-taking as some of the fundamental causes of this crisis. At the same time, in dealing with the financial crisis there have been large scale interventions by governments, often...

This paper addresses the problem of scheduling economic lots in a multi-product single machine environment. A mixed integer non-linear programming formulation is developed which finds the optimal sequence and economic lots. The model takes explicit account of initial inventories, setup times,...

The project was created with the intention of helping the managers, whose objective is to optimize the use of resources so that they obtain the wanted profit. In the first paragraphs we presented the theoretical concepts that we had in order to make this application. We pointed out the necessity...

Unbalanced bidding is a serious problem for the construction owner because it may increase the cost of construction The most common way to mathematically unbalance a bid is frontloading where a bidder overstates the unit price of line items scheduled to be performed early in the project and...

In an exchange economy with no aggregate uncertainty, and Bayesian agents, Pareto optimal allocations provide full insurance if and only if the agents have a common prior. It is hard to explain why there is relatively so little betting taking place. One is led to ask, when are full insurance...

In this paper we study the concepts of equilibrium and optimum in static transportation networks with elastic and non-elastic demands. The main mathematical tool of our paper is the theory of variational inequalities. We demonstrate that this theory is useful for proving the existence theorems....