Prehistoric rock paintings from Northern Mexico are becoming better known. Twenty sites for a single municipio in the state of Nuevo Leon have recently been described. Not all the paintings that are being found are a spectacular as the ones…

Prehistoric rock paintings from Northern Mexico are becoming better known. Twenty sites for a single municipio in the state of Nuevo Leon have recently been described. Not all the paintings that are being found are a spectacular as the ones…

Prehistoric rock paintings from Northern Mexico are becoming better known. Twenty sites for a single municipio in the state of Nuevo Leon have recently been described. Not all the paintings that are being found are a spectacular as the ones…

Con la profundización de la globalización, a partir de la década de 1970 se producen cambios económicos, políticos, sociales y culturales, que conducen a una nueva concepción del desarrollo. En este contexto, la estrategia de desarrollo local constituye una opción…

Al hacer una revisión de las más representativas historias de Venezuela en nuestra historiografía, en lo que respecta al
proceso emancipador, advertimos que el principal problema que ha obstaculizado el estudio de las regiones dentro de dicho proceso, es…

The objective of this paper is the construction of an Essential Object Model for Information Systems. This model is derived from the organization workflows representing the business processes and follows rules described by the methodology proposed. To achieve the desired…

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The role of communities associated to a substrate as fundamental components of an aquatic system has been recognized by many authors. Although periphyton has been considered of great importance in shallow lakes, its inclusion in different ecological models has been…

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