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Fallas de alta impedancia en los sistemas de distribución eléctrica
(Polytechnic University of Puerto Rico, 1992-06)
Most of the time, a fault in an electrical power system presents a much higher current than the current that flows in the system during. normal conditions. This fault current is harmful for the components of the system ...
Cálculo de los coeficientes de la ecuación de pérdidas para un sistema de generación de potencia
(Polytechnic University of Puerto Rico, 1995-06)
Calculation of the loss equation coefficients (Bmn) for a power generation system
Engineering has been very successful in the analysis of fuel costs, performance and efficiency of boilers, turbines, and generators. However, ...
Método analítico para determinar concesiones y análisis de rendimiento
(Polytechnic University of Puerto Rico, 1994-06)
We developed an analytical method to determine allowances and performance ratings based on human physiology. The theory about the human capacity to do work is analogous to the graph of steel fatigue used for structural ...
The Impact of Segmentation and Overlapping in Feature Extraction for Biometric Human Authentication Systems
(Polytechnic University of Puerto Rico, 2021)
One of the arduous challenges in Machine Learning is how to extract features withenough information that will simplifythe learning process of classificationmodels;therefore,leading to better predictionsand ...
Variables that may predict the behavior of a student in his/her university life at Polytechnic University of Puerto Rico
(Polytechnic University of Puerto Rico, 1996-06)
The objective of this study is to establish the relationship, if any. between the Graduation Grade Point Average (GPA) of students that began as first year studentes at Polytechnic University of Puerto Rico and remained ...
Subscriber line automatic identification number device
(Polytechnic University of Puerto Rico, 1995-12)
The subscriber line automatic identification number device, SLAIN device, is an apparatus that may be utilized as the subscriber's end section of a telephone privatization system. This system will not utilize any equipment ...
Coeficientes de utilización de disyuntores ("breaker duty")
(Polytechnic University of Puerto Rico, 1993-06)
The breaker duty calculation is very important to the electric industry cause it shows which breakers overload under fault conditions. This way e utility determine the the extra capacity to add to those breakers or Aether ...
Dinámica de redes y el modelo del ión rígido en cristales del tipo R2MX6
(Polytechnic University of Puerto Rico, 1992-12)
The theory of lattice dynamics in the harmonic approximation and the Born and Huang's rigid-ion model are used to study ionic crystals of R2MX6 type with antifluorite structure. The rigid-ion model expresses the potential ...
Wave solder process characterization by an experimental design approach
(Polytechnic University of Puerto Rico, 1992-06)
A manufacturing company in Puerto Rico was interested in evaluating the possibility of profiling all printed circuit board assemblies. Experimental design, a method for systematically planning engineering studies, offered ...
Diseño de Programa de Dimensionamiento Preliminar de Compresor Axial de Doble Eje
(Polytechnic University of Puerto Rico, 2022)
En la actualidad, se están desarrollando en todo el mundo proyectos de gran envergadura relacionados con el desarrollo energético, siendo más comunes los proyectos y creaciones de modelos para la ...