I formulate and estimate a model of externalities within countries and technological interdependence across countries. I find that external returns to scale to physical capital within countries are 8 percent; that a 10 percent increase of total factor productivity of a country's neighbors raises...

The problem of the industrial objectives security imposes as a fundamental condition of economic efficiency. This is why is necessary the elaboration of a new concept regarding industrial security. This concept must integrate quality problems, with technological and ecological characteristics of...