El proceso de modernización de la agricultura latinoamericana

Abstract

El futuro de los ferrocarriles internacionales de Sudamérica. Un enfoque histórico Robert T. Brown 7 La estrategia de las necesidades básicas como alternativa. Sus posibilidades en el contexto latinoamericano Jorge Graciarena 41 El proceso de modernización de la agricultura latinoamericana Gerson Gomes y Antonio Pérez 57 Planes versus planificación en la experiencia latinoamericana Carlos A. de Mattos La economía brasileña: los caminos hacia los años ochenta Pedro Sampaio Malán 97 El proteccionismo contemporáneo y las exportaciones de los países en desarrollo

An IoT based Control System for a Solar Membrane Distillation Plant used for Greenhouse Irrigation

“…It should be noted that in Eqs. (2)(3)(4)(5)(6)(7)(8)(9)(10) and hereinafter the nomenclature (t+k|t) in all the variables has been omitted for the sake of simplicity.…”

“…Eqs. (6)(7)(8) are related with the water demand of each of the greenhouses, which must be always satisfied by the sum of the water that each greenhouse receives from the storage tank and from the public network.D GH1 ,D GH2 , andD GH3 are the demands in [L/h] of greenhouse 1, 2 and 3 respectively. As happens previously, in a real application, these demands must be estimated by using a model of the greenhouse as the one presented in [16], in this work real data has been used as real facility and for predictions.…”

“…The first one is related to the use of Information and Communication Technology (ICT) tools that allow the optimization of resource management, through a network of sensors, actuators and other devices. The second term integrates the use of new technologies such as IoT, Big Data, cloud computing, artificial intelligence and deep learning in agricultural systems, which is known as the third green revolution [8].…”

El subempleo rural: problemas y potencialidades de un concepto a partir de un estudio de caso

“…Pretende llamar la atenci6n, entonces, no solo respecto a la conformacion heterogenea de las economias (De Filippo y Jadue, 1976; Ortega, 1982), sino tambien sobre los procesos de diferenciacion social que suceden incluso hacia el interior de ciertos agentes (Gomes y Perez, 1979;Mizrahi, 1981;Piiieiro et. Pretende llamar la atenci6n, entonces, no solo respecto a la conformacion heterogenea de las economias (De Filippo y Jadue, 1976; Ortega, 1982), sino tambien sobre los procesos de diferenciacion social que suceden incluso hacia el interior de ciertos agentes (Gomes y Perez, 1979;Mizrahi, 1981;Piiieiro et.…”