Listar Revista Politechnê por título
Mostrando ítems 57-76 de 285
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Dielectric Spectroscopy Applied to Porcine Tissues
(Polytechnic University of Puerto Rico, 2019)This paper discusses the characteristics of the dielectric properties: permittivity (E), conductivity (ó) and dielectric loss (E") of a porcine tissue. The main objective is to measure and identify the dielectric properties ... -
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 ... -
Diseño computadorizado de la carga térmica para el acondicionamiento de aire en Puerto Rico (AIRPAK 123 TM)
(Polytechnic University of Puerto Rico, 1993-12)A digital program to compute the industrial air conditioned load was designed. It took us over 3,000 hours to obtain a reliable product which excels all air conditioned programming standards known to this moment. The program ... -
Diseño de experimentos con una máquina de revestimiento de tabletas en una industria farmacéutica
(Polytechnic University of Puerto Rico, 1994-06)A subtle but meaningful kind of loss is the acceptance of subjective beliefs within an organization. Profits are never a result of mysticism. Subjectivity without a precise base is a way of lying and, although it might not ... -
Diseño de experimentos para una de las líneas de llenado y empaque en una industria farmacéutica local
(Polytechnic University of Puerto Rico, 1994-06)A local pharmaceutical company has to reduce the number of complaints from customers who receive its products in broken or cracked glass bottles. In this paper we discuss an experiment to establish parameters to guarantee ... -
Diseño de Mezcla de Hormigón Utilizando Vidrio Reciclado de Botellas como Parte del Agregado Fino y Cemento Adicionado con Escoria de Alto Horno
(Polytechnic University of Puerto Rico, 2016)El presente estudio es la continuación de un proyecto donde se realizaron pruebas a hormigones con vidrio reciclado en sustitución de agregado fino en un 10%, 20% y 30%. En esta nueva etapa, el vidrio fue recolectado de ... -
Diseño de un controlador de lógica programable
(Polytechnic University of Puerto Rico, 1991-12)This document shows how to design a programmable logic controller. This type of design involves several steps, but these steps were grouped in two subsequent phases. The first phase deals with the design and implementation of ... -
Diseño de un experimento para una máquina de embotellado
(Polytechnic University of Puerto Rico, 1995-12)Experimental design for a bottling proccess machine In this article we present an experimental design for a bottling process machine of the dry products plant of a local pharmaceutical industry. Our goal is to identify ... -
Diseño de un flujo continuo utilizando la filosofía de "Justo a tiempo" (Just In Time)
(Polytechnic University of Puerto Rico, 1991-06)La filosofía de "Justo a tiempo" consiste en diseñar un sistema de manufactura flexible y que promueva mejoras continuas. Entre las ventajas que ofrece este concepto se destacan la eficiencia, la menor cantidad de material ... -
Diseño de un marcapaso programable con memoria y capacidad de comunicación
(Polytechnic University of Puerto Rico, 1992-12)A design of a programmable pacemaker unit which integrates microprocessor control, memories and a communication device. This pacemaker uses programming techniques to adjust its operations to the patients' needs, to compile ... -
Diseño de un microprocesador
(Polytechnic University of Puerto Rico, 1994-06)We show the design of a microprocessor that includes the set of instructions, the addressing modes and the cycle of fetch-decode-execute an instruction. We chose the registers used in the design from the board and then ... -
Diseño de un modelo de simulación por computadoras para una sala de emergencias
(Polytechnic University of Puerto Rico, 1991-12)This document describes the development of a simulation model and its use in the emergency room of a hospital. The first part of the document presents the problem and the system to be modeled, the objectives of the study, ... -
Diseño de un motor sincrónico y su sistema de protección
(Polytechnic University of Puerto Rico, 1995-12)Design of a synchronous motor and its protection system The design of a synchronous motor is not a common task in the practice of electrical engineering because this type of machine is widely available for mechanical ... -
Diseño de un sistema de control para un proceso químico industrial
(Polytechnic University of Puerto Rico, 1991-06)La idea fundamental de todo sistema de control automático es que el proceso y el controlador formen un lazo cerrado de acción y respuesta. La funcion principal de un sistema de control es el mantener la variable de salida ... -
Diseño de un sistema de producción de discos para pararrayos mediante la simulación computadorizada del proceso
(Polytechnic University of Puerto Rico, 1993-06)This project is based upon proposed changes to the design of facilities and the acquisition of new equipment for a company. Our goal is to optimize the use of the equipment and the human and economic resources using the ... -
Diseño de un sistema para el control de producción e inventario en una fábrica de ataúdes
(Polytechnic University of Puerto Rico, 1991-06)Este artículo resume el estudio que se llevó a cabo para diseñar un programa de producción Kanban y un plan de inventario MRP para la compañía Indiana Casket Corporation. Esta empresa, fundada en el año 1983, participa ... -
Diseño y desarrollo de un controlador de temperatura para un horno de pruebas
(Polytechnic University of Puerto Rico, 1994-12)Design and development of a temperature controller for a test oven As a part of quality control process, the electronics industry must make different tests to electronic components. One of these tests allows us to determine ... -
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 ... -
Distopías coloreadas con pinceles cuánticos
(Polytechnic University of Puerto Rico, 2018)¡Qué manera más idónea de introducirnos a este futuro: dentro de un aula de clases! Aunque por la naturaleza adoctrinadora del dialogo que le da forma a esta primera historia, bien podríamos estar a los pies de una ... -
Dynamic analysis of rigid pavements and bridges under moving vibrating trucks
(Polytechnic University of Puerto Rico, 1997-12)The computer program UPR-PAVI2 was developed to perform the dynamic analysis of a pavement slab or a bridge superstructure loaded with moving vibrating trucks. UPR-PAVI2 can model the soil, slab and truck, considering their ...