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Reduction of downtime through the design of TPM and the implementation of some techniques of SMED system at high speed packaging lines
(Polytechnic University of Puerto Rico, 1996-06)
This project was developed at a pharmaceutical facility located in the eastern area of Puerto Rico. The company manufactures oral contraceptives and analgesics. In the analgesic branch a new product is being introduced, ...
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 ...
Determination of soil strength parameters from unconfined compression testing on partially saturated soils
(Polytechnic University of Puerto Rico, 1996-12)
The uneonfined compression test is used in most geotechnical studies to y -determine soil strength parameters. This test is recommended for fine cohesive > ^ soils with a degree of saturation of more than 90%. It has been ...
Inscribed r-gons: A Combinatorial approach
(Polytechnic University of Puerto Rico, 1996-12)
The author uses the concept of circular combinations to find the number of r-gons that can be inscribed in a n-gon.
Trigésimo Aniversario
(Polytechnic University of Puerto Rico, 1996-12)
La Universidad Politécnica de Puerto Rico (UPPR) cumple 30 años. Nació en 1966 cuando comenzó a ofrecer cursos técnicos conduncentes a un bachillerato en agrimensura y cartografía.
Determination of interface roughness and its correlation in amorphous-silicon/ amorphous-germanium multilayers
(Polytechnic University of Puerto Rico, 1996-06)
The importance of surfaces and interfaces of materials is increasing in many technological areas. In the microelectronic industry, for example, the J current trend is toward even faster and smaller electronic devices. ...
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 ...
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 ...
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 ...