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Antena inteligente con haces conmutados para redes de comunicaciones móviles*
(Polytechnic University of Puerto Rico, 2005)
The smart antenna technology for mobile communications has been the object of enormous worldwide interest during the last decade. The principal reason for the application of smart antennae is their potential for a large ...
Basic Plasma Diagnostics: Probes and Analyzers
(Polytechnic University of Puerto Rico, 2008)
What is plasma? Plasma is the fourth state of matter. Plasma are conductive assemblies of charged particles, neutrals and fields that exhibit collective effects. Plasma is profoundly influenced by the electrical interaction ...
Mass Spectrometric Study of Various Coated Targets Utilizing PUPR-MC Plasma Machine for NASA Solar Probe Space Mission
(Polytechnic University of Puerto Rico, 2008)
The NASA Solar Probe Space Mission will be a historic operation, flying for the first time into one of the last unexplored regions of the solar system, the Sun's atmosphere or corona; hopefully revolutionizing our knowlege ...
Design of an Automation and Control System for PUPR-MC Plasma Machine
(Polytechnic University of Puerto Rico, 2008)
The automation of Polytechnic University of Puerto Rico Mirror-Cusp (PUPR-MC) plasma machine is part of the work performed by the Plasma Engineering Laboratory in the experiments of the NASA Solar Probe Mission Thermal ...
High Density Plasma Nitriding on Stainless Steel Alloys at PUPR-MC Plasma Machine
(Polytechnic University of Puerto Rico, 2008)
A novel method of nitriding at high current levels at Polytechnic University of Puerto Rico Mirror Cusp plasma machine (PUPR-MC) has been performed. Nitrogen ions implantation or plasma nitriding increases the hardness at ...
Smart Antenna Performance Simulation in Multipath Propagation Environment
(Polytechnic University of Puerto Rico, 2008)
This paper presents the effect of multipath propagation on the performance of smart antenna. The influence of the correlation between the source multipath components on the uplink beam pattern shape, as well as the resulting ...
Plasma Gas Identification Using the Single Langmuir Probe
(Polytechnic University of Puerto Rico, 2008)
A novel method to identify mass composition of plasmas was discovered at Polytechnic University of Puerto Rico Mirror Cusp (PUPR-MC) plasma machine using a Single Langmuir probe characteristic. This is a comparative method ...
Sistemas de Información Geográfica y Técnicas de Interpolación Espacial para la Modelación de Valores Residenciales
(Polytechnic University of Puerto Rico, 2006)
El presente escrito muestra los resultados de una metodología que, utilizando técnicas de interpolación espacial, procedió a modelar los valores de ventas residenciales en la periferia de la alienación del Tren Urbano para ...
Retroceso de glaciares tropicales en los Andes Centrales de Colombia mediante imágenes LANDSAT
(Polytechnic University of Puerto Rico, 2006)
Los glaciares tropicales exhiben cambios significativos en respuesta a las variaciones de las condiciones climáticas, observándose una pérdida constante y progresiva en los últimos 100 años. La estimación de la superficie ...
Fauna y Eros en los Sonetos sinfónicos y en Alturas de America de Luis Lloréns Torres
(Polytechnic University of Puerto Rico, 2005)
The Puerto Rican criollo poet par excellence, Luis Lloréns Torres, complements its poetry genius with erotic lyrics seldomly studied by critics. Acknowledging previous critics on this theme, we analyze his particular ...