This paper evaluates the efficiency of the telecommunications sector in Latin America. The great dynamism acquired by this sector has been due to external factors of change such as privatization processes that took place mainly during the nineties, technological changes, market liberalization...

In these years, the urban planning system has been reconsidered in terms of sustainable policies. The sustainability in urban areas involves attempts of urban development including environmental, social and economic improvements, policies and practices in the next generation stage. In most of...