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Sizing a solar cell array for a solar powered lawnmower machine
(Polytechnic University of Puerto Rico, 1996-12)
This project focuses on the sizing and control of a photovoltaic (PV) collector of a solar lawnmower prototype to satisfy the geographical orientation of Puerto Rico and its available sunlight. The design, analysis and ...
Classification of nr-graphs
(Polytechnic University of Puerto Rico, 1997-06)
When all possible r-gons are inscribed in an n-gon, the resulting n-graph falls into one of the following three categories: s-regular (sr or strongly regular), //-regular, or regular (k-regular). The definitions and necessary ...
Design and analysis of multi-section eccentric shaft
(Polytechnic University of Puerto Rico, 1996-12)
In this report the preliminary design and analysis of multi-section eccentric shaft to be used on four-rotor Wankel rotary engine is discussed. Only a static analysis was performed due to time constraints. This novel design ...
Study of the density of states in amorphous Silicon-Hydrogen using the semiconductor/electrolyte system
(Polytechnic University of Puerto Rico, 1996-12)
Localized states in amorphous Silicon-Hydrogen are studied by pulsed measurements on the a-Si:H/electrolyte (S/E) system. The S/E interface is essentially blocking to current flow. As a result, surface space-charge layers, ...
Vector quantization
(Polytechnic University of Puerto Rico, 1996-12)
Data compression is the packing of data, the process of transforming a body data into a smaller representation from which the original or an approximation of the original can be computed at a later time. Most data sources ...
Bridges under dynamic loads: comparison between finite element analysis and experimental results
(Polytechnic University of Puerto Rico, 1997-06)
AASHO Road Test performed experimental tests on bridges under dynamic and static truck loads. This paper shows a comparison between AASHO's tests and the analytical results of UPR-PAVI2, a computer program developed by the ...
Implementation of the stiffness method within MathCad numeric computation environment
(Polytechnic University of Puerto Rico, 1996-12)
This article presents a case study of a simple planar framed structure to show an original implementation of the stiffness method of structural analysis within MathCad numeric computation environment. This approach was ...
Golden section search solution of single variable optimization problems using MathCad
(Polytechnic University of Puerto Rico, 1997-06)
The method of solution presented in this article is based on a searching technique known as the Golden Section Rule. This method can be used for solving single-variable optimization problems without constraints, but for ...
Colapso de un muro de contención construido con mampostería
(Polytechnic University of Puerto Rico, 1997-06)
This study presents the analysis of a masonry retaining wall, typically built in Puerto Rico to stabilize and retain slopes. How safe and well built are these walls?. Have they the adequate resistance to efficiently retain ...
Disposición adecuada de desperdicios
(Polytechnic University of Puerto Rico, 1997-06)
En abril la Autoridad de Desperdicios Solidos celebro el mes de reciclaje y manejo adecuado de los residuos solidos. En mayo se celebro en Puerto Rico la semana del ingeniero y el agrimensor. Posiblemente se estaran ...