This survey presents cutting planes that are useful or potentially useful in solving mixed integer programs. Valid inequalities for i) general integer programs, ii) problems with local structure such as knapsack constraints, and iii) problems with 0-1 coefficient matrices, such as set packing,...

The article presents an integrated econometric + input - output model for generating long-run forecasts of fuel demand in Brazil. The model is based on the integration, by means of a linking strategy, of a vector error correction model with a hybrid input-output model for the Brazilian economy...

This paper deals with a basic issue: How does one approach the problem of designing the "right" objective for a given resource allocation problem? The notion of what is right can be fairly nebulous; we consider two issues that we see as key: efficiency and fairness. We approach the problem of...

This paper studies the offshoring of services and whether this phenomenon is linked to the international fragmentation of activities or to a shift in outsourcing to foreign rather than domestic suppliers. Analysis is performed using the National Accounting input-output tables of Spain’s...

Integrated assessment models that combine geophysics and economics features are often used to evaluate and compare global warming policies. Because there are typically profound uncertainties in these models, a simulation approach is often used. This approach requires the distribution of the...