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Pull system implementation in a welding area
(Polytechnic University of Puerto Rico, 1996-06)
Our project took place in a welding area which supplies two production lines of a large company in Puerto Rico. The company is divided in four areas: fabrication, welding, assembly and molding. Management wants to implement ...
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 ...
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 ...
Process control laboratory - bar code system
(Polytechnic University of Puerto Rico, 1996-06)
This paper presents the basic concepts of a bar code system using a PC-based architecture. This system was developed and implemented in the Industrial Engineering Process Control Laboratory. The main objective of this ...
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 ...
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, ...
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. ...
Perspectivas futuras de la demanda energética mundial: el enfoque social de un problema global
(Polytechnic University of Puerto Rico, 1996-06)
Future perspectives of the energy demand of the world: social focusing of a global problem This article attempts explaining the short- and long-range perspectives of energy consumption as a function of social factors such ...