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Propagación de radiofrecuencias a través del espacio interestelar
(Polytechnic University of Puerto Rico, 2004)
Pulsar statrs act like simple radio stations consisting of a rotating two pole electromagnet. They behave like interstellar beacons radiating electromagnetic pulses in the microwave band.The interstellar radiation reaches ...
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 ...
Water Quantity and Quality Issues in El Paso Del Norte Region
(Polytechnic University of Puerto Rico, 2005)
The El Paso del Norte Region faces challenges in the administration of its water resources in the way water is managed due to conflicts with different political jurisdictions and existing laws governing water management ...
Breve relato de la historia de los programas de Bachillerato en Agrimensura en Puerto Rico
(Polytechnic University of Puerto Rico, 2006)
Discurso editado, presentado por el Profesor Jenaro R. Negrón el 21 de febrero de 2006 en el Cuadragésimo Aniversario del Programa de Agrimensura de la Universidad Politécnica de Puerto Rico.
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 ...
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 ...
El Mercado de Bienes Raíces en Puerto Rico Estudio sobre las tendencias entre los años 1996 y 2006
(Polytechnic University of Puerto Rico, 2006)
Los precios de los bienes raíces son influenciados por una cantidad amplia de factores tales como: tendencias demográficas, el mercado de empleos, poder adquisitivo, la tasa de interés hipotecario, requerimientos bancarios, ...
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 ...
Experimental Design of a High Vacuum System for PUPR-MC Plasma Machine
(Polytechnic University of Puerto Rico, 2008)
In vacuum technology it is customary to divide a large pressure region (as of today, covering 16 orders of magnitude) into single, smaller regions. These divisions are somewhat arbitrary. Thus, the chemists frequently refer ...
Power Electronics Research Experience for Undergraduates
(Polytechnic University of Puerto Rico, 2004)
On the first half of the 20th century many of the electronic devices and machinery used were very expensive, inefficient, unreliable, and robust. With revolutionary advances in semiconductor technology much of these barriers ...