During the flight of the javelin its interaction with the surrounding air presents a relevant importance, which is characterized by the coefficients of lift and drag and by the position of the center of pressures. Usually these parameters are determined in wind tunnels with the required span to accommodate an implement of these dimensions, being di...
In this work, a dynamic model in Simulink is proposed to simulate the behavior of photovoltaic modules. A novel methodology, based in the Tellegen's theorem, is presented to obtain with accuracy the five parameters of the simple diode model, through the data provided by the manufacturer in the data sheet. The obtained model considers, in the calcul...
This paper analyzes the regional innovation system of the department of Antioquia in Colombia, from a complex systems perspective and using an agent-based simulation model. Among the results is a model with significant variables and indicators for generating new knowledge and innovation on a regional scale. This provides evidence that more favorabl...
Insufficiency of water available for consumption constitutes a central role in the social debate due to the natural importance of this resource and the predictions of the exponential demographic increase, putting more pressure on the cycle of this finite resource essential for natural equilibrium. Therefore, the infrastructure responsible for its d...
Macroeconomic modelling has been under intense scrutiny since the Great Financial Crisis, when serious shortcomings were exposed in the methodology used to understand the economy as a whole. Criticism has been levelled at the assumptions employed in the dominant models, particularly that economic agents are homogeneous and optimising and that the e...
En este trabajo se analiza el uso de los cambios de temperatura (enfriamiento) en problemas matemáticos de libros de texto del nivel secundario (México) y universitario (Estados Unidos de América y Canadá). Se presenta una evidencia experimental que pone en entredicho las supuestas situaciones reales que se exponen en aquellos documentos, evidencia...
O artigo apresenta uma reflexão sobre o que significa "ser um professor hoje", especificamente na área de Matemática, contando com a tensão entre dois modelos educacionais opostos: o paradigma do exercício e o paradigma dos cenários de pesquisa. Para isso, faço um tour pela minha prática de ensino com foco nos intervalos, mas também nas pontes entr...
The main objective in this study is to develop a CFD model (Computational Fluid Dynamics) for the analysis and simulation of the velocity profiles in the Loss Bank of the Hydraulic Turbomachinery laboratory. The velocity profile is the simulation of the behavior of the internal fluid in the PVC pipe bank. The model developed for the simulation of v...
En el presente artículo se detalla la evolución histórica de la modelación de demanda en Costa Rica, haciendo mención del primer estudio de modelación de demanda de la historia, a nivel internacional, realizado en Chicago en la década de los sesenta, a partir del cual se basa la metodología utilizada en todos los estudios posteriores realizados par...
The present work presents the elaboration of a Geographic Information System of the hydraulic networks of the Central University Marta Abreu de Las Villas (UCLV) from an "in situ" survey of the network, the main characteristics and a partial evaluation of its component elements. Subsequently the results are exported to EPANET software, to model the...
