Examinando por Materia "MOTORES"

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  • Proyecto final de Grado
    Modelo de stocks para empresa importadora
    (2012) Cabezas, Santiago; Redelico, Francisco
    "El presente trabajo analiza el manejo de inventarios durante el año 2011 para la filial argentina de una multinacional dedicada a la importación y comercialización de motores tubulares. Mediante la generación de un modelo de administración de stocks se demuestra la necesidad e importancia de generar un foco sistémico, metódico y analítico para disminuir los costos de inventarios."
  • Artículo de Publicación Periódica
    Stochastic resonance and brownian ratchets
    (2005) Fendrik, Alejandro J.; Romanelli, Lilia; Perazzo, Roberto P. J.
    "We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left–right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show that this system presents two thermal enhancements within two different windows of the temperature. One is associated with a ‘‘coherent diffusion’’ by which particles jump back and forth between the minima of the periodic potential in synchrony with the external driving. The other is instead associated with a ‘‘coherent directional transport’’ by which particles hop synchronically from one minimum of the ratchet to the next. We calculate the current and the diffusion coefficients and show how transport undergoes a resonant enhancement. While the former is always present, the second only appears when left–right symmetry is broken."