Browsing by Autor "Giorgio Tonella"
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Item type: Item , Evaluación de los impactos potenciales de cambios climáticos inducidos por efecto invernadero y por la deforestación sobre el cultivo de maíz y caraota en Venezuela(2018) Miguel F. Acevedo; Ramón E. Jaimez; Carlos E. Maytín; Giorgio TonellaItem type: Item , Generalización de un algoritmo para la identificación de los subsistemas(1986) Giorgio TonellaThe paper points out the lack of realibility of one of the method used for the identification of subsystems through rows and columns permutations of the interaction matrix which represents the system. It also introduces some changes in the methods, which produce more reliable results, as the ones obtained by experiments realized with different models.Item type: Item , Matrices de alcanzabilidad, herramientas para la construcción y análisis de la estructura de modelos de simulación(1986) Giorgio TonellaThe paper introduces a techniques, which is based on graph and matrix theories to help modellers in building models. This techniques uses the properties of the reachability matrix to find the most important and critical elements, loopst circuits etc. Also it gives some new ideas on a globaI methodology to build simulation models, which combines the traditional methods with some new one.Item type: Item , Modelos globales de simulación en Venezuela. Histórico, Parte I 1960-1976(1987) Giorgio TonellaThe paper analizes the first 15 years of experience in building and using global simulation models in Venezuela. The aims of the analysis is to identify their most important characteristics and the factors that allowed and facilitated their development. It also gives a view of their role played in the 60s, when many models were built and used as in few other countries.