Weight vector estimation of circular arrays of antennas using Artificial Neural Networks

This paper presents a model for the control of the radiation pattern of a circular array of antennas, shaping it to address the radiation beam in the direction of the user, in order to reduce the transmitted power and to attenuate interference. The control of the array is based on Artificial Neural Networks (ANN) of the type RBF (Radial Basis Functions), trained from samples generated by the Wiener equation. The obtained results suggest that the objective was reached.

Predicting academic success of engineering students in technical drawing from working memory

Tests on spatial aptitude, in particular Visualization, have been shown to be efficient predictors of the academic performance of Technical Drawing stu-dents. It has recently been found that Spatial Working Memory (a construct defined as the ability to perform tasks with a figurative content that require si-multaneous storage and transformation of information) is strongly associated with Visualization. In the present study we analyze the predictive efficiency of a bat-tery of tests that included tests on Visualization, SpatialWorking Memory, Spatial Short-term Memory and Executive Function on a sample of first year engineering students. The results show that Spatial Working Memory (SWM) is the most important predictor of academic success in Technical Drawing. In our view, SWM tests can be useful for detecting as early as possible those students who will require more attention and support in the teaching-learning process.

A proposal for drawing up indigence lines

Includes bibliography

Simulação computacional do escoamento bifásico com formação de espuma da mistura óleo-refrigerante R134a ao longo de um tubo reto de seção circular constante

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo numérico para a determinação das pressões devidas a ação do vento em torres metálicas de seção circular

Pós-graduação em Engenharia Civil - FEIS

Qualidade da colheita mecanizada de café em plantio circular sob pivô central

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Carta Circular de la Red de Cooperación en la Gestión Integral de Recursos Hídricos para el Desarrollo Sustentable en América Latina y el Caribe N° 25

Editorial.-- Discusión abierta: Formulación de nuevos marcos regulatorios para los servicios de agua potable y saneamiento ; Integrando economía, legislación y administración en la gestión del agua y sus servicios en América Latina y el Caribe.-- Importante fallo sobre los derechos del agua indígenas de la Corte Suprema de Chile.-- Reuniones: Pobreza, desertificación y degradación de los recursos naturales.-- Noticias de la RED: Día Interamericano del Agua (DIAA) ; Fondo Nacional del Agua (FONAGUA) en Perú.-- La Conferencia del Río Colorado, Argentina, cumplió 50 años ; Consejos de Aguas por Cuencas en Paraguay.-- Noticias sobre internet y WWW

Carta Circular de la Red de Cooperación en la Gestión Integral de Recursos Hídricos para el Desarrollo Sustentable en América Latina y el Caribe N° 16

Editorial.-- Discusión abierta: Agua y gobernabilidad: ¿un no a las simplificaciones? ; ¿Es bueno fomentar la competencia en los servicios de agua potable y saneamiento?.-- Noticias de la RED: Prevención y reducción de las amenazas originadas por desastres naturales ; Día Interamericano del Agua (DIAA) ; Derechos de agua y acción colectiva.-- Actividades futuras.-- Noticias sobre internet y WWW