Este trabajo intenta mostrar el vínculo entre los choques monetarios y las fluctuaciones del producto en Colombia, usando datos anuales entre 1950 y 1994, los cuales permiten el contraste de la no neutralidad de los choques monetarios en el corto plazo y de la proposición de neutralidad de...

This work responds to the question: Why are the Almost Ideal Demand System (AIDS) and its quadratic extension, the QUAIDS model better ways ofmodelling consumer behaviour than the StoneGeary' Models? Thus, the work shall deal with proposals of singleequation (or separated equations) and with...

One of the main characteristics of the urban public service train is its capacity to produce benefits that overcome the costs of using this system, that is, its potentiality to produce indirect effects. The Metro of the Aburrá Valley falls into this trend. This article illustrates, not only the...