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Hyperbolic, Ultrastatic Wormhole Solution to the Vacuum Effective Gravity Equations in Randall Sundrum Brane World
(Polytechnic University of Puerto Rico, 2005)
We provide a traversable wormhole solution to the effective vacuum gravity equations in Randall Sundrum brane world scenario. We argue that graviton effects from the bulk spacetime can stabilize the wormhole"s throat against ...
The Vision of Space Exploration - Life in the Universe Hispanics in Engineering National Conference
(Polytechnic University of Puerto Rico, 2006)
Closing dinner speech of the Hispanics in Engineering National Conference by Eng. Orlando Figueroa.
Mensaje ofrecido en “Hispanics in Engineering National Conference” con motivo a la celebración del Cuadragésimo Aniversario de la fundación de la UPPR
(Polytechnic University of Puerto Rico, 2006)
Message offered on the occasion of the 40th anniversary of the Polytechnic University of Puerto Rico in the 2006 Hispanics in Engineering National Conference.
El impacto del paradigma constructivista en la enseñanza de matemáticas
(Universidad Politécnica de Puerto Rico, 1999-12)
The constructivist paradigm offers important
implications to educators about the teaching and
learning of mathematics. The curricular reforms in the mathematics classroom, in its majority, emerge from constructivist ...
Tools for Predicting Uncertainty and confidence Intervals in Radiometric Data Products
(Universidad Politécnica de Puerto Rico, 1999-12)
Spaced-based observations of atmospheric
energetics, such as those provided by NASA’s
Clouds and the Earth’s Radiant Energy System
(CERES), produce data products intended to be
shared with the larger scientific community ...
Simulation of the Antenna Pattern of Arbitrarily Oriented Very Large Phase/Time-Delay Scanned Antenna Arrays with Systematic and Random Errors
(Universidad Politécnica de Puerto Rico, 1999-12)
A computer simulation to determine the field
pattern of arbitrarily oriented, very large phase/time delay scanned antennas was developed. The simulation takes into account errors present in antenna arrays. These are ...
Semisolid Metal Processing
(Universidad Politécnica de Puerto Rico, 1999-12)
Processing of metal alloys in their mushy state
represent a new trend in metal processing. The process produces components with low porosity,
high crack resistance, fine microstructure, and
better mechanical properties ...
Aplicación de sistemas de información geográfica en el análisis de la isla de calor urbana
(Universidad Politécnica de Puerto Rico, 1998-12)
An urban heat island has been described as the
difference in temperature between the city and its peripheral rural area. It is caused mainly by the growth of the city not taking into consideration the conditions previous ...
Historia de la ingeniería eléctrica, un formidable motor propuldor de la presente y futuras civilizaciones
(Universidad Politécnica de Puerto Rico, 1998-12)
In this article the reader will find a historic
account of the scientific discoveries that provided
the foundations of electrical engineering as a
profession. The article also presents a list of names
of those scientists ...
Aprendizaje mediante la colaboración grupal (Cooperative Learning)
(Universidad Politécnica de Puerto Rico, 1998-12)
This work illustrates the needs of exposing the
students to learning experiences that develop and enhance their capabilities for analytical critical thinking in the solution of problems. The work in small groups with ...