The structure introduced by Armington (1969) has been used to analyze trade policy in partial and general equilibrium models. The Armington elasticities, the degree of substitution between domestic and import goods are known to be important, but are seldom estimated empirically. Therefore, we...

This paper tries do motivate the discussion of evaluation problems in the context of social programs. Initially, the text explores the point of view that social programs should be recognized as complex organizations. In the case, there are multiple objectives, decentralization, and coordination...

This paper tries do motivate the discussion of evaluation problems in the context of social programs. Initially, the text explores the point of view that social programs should be recognized as complex organizations. In the case, there are multiple objectives, decentralization, and coordination...