Now showing items 109-128 of 302

    • Fallas de alta impedancia en los sistemas de distribución eléctrica 

      Ramos Rodríguez, Ricardo L.; Zapata Acosta, Mary C. (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 ...
    • Faster Sample Delivery to the Microbiology Laboratory using Lean Six Sigma 

      García Piazza, Lumarie (Polytechnic University of Puerto Rico, 2010)
      This article presents the Lean Six Sigma tools used to identify the factors that impact the timely arrival of environmental water samples to a Microbiology Laboratory in a biotechnology industry. The inherent variations ...
    • Fauna y Eros en los Sonetos sinfónicos y en Alturas de America de Luis Lloréns Torres 

      Miranda, Iris (Polytechnic University of Puerto Rico, 2005)
      The Puerto Rican criollo poet par excellence, Luis Lloréns Torres, complements its poetry genius with erotic lyrics seldomly studied by critics. Acknowledging previous critics on this theme, we analyze his particular ...
    • Fiber Drums Reduction in Weighing & Dispensing Manufacturing Process 

      Rosa, Diangie M. (Universidad Politécnica de Puerto Rico, 2024)
      Achieving overall efficiency within the manufacturing processes is the key goal among many organizations. Reducing waste enables manufactures to save money and take production up a notch. LEAN manufacturing and DMAIC ...
    • Filtros digitales para el procesamiento de imágenes 

      López Malavé, Roberto; Rivera Paz, William (Polytechnic University of Puerto Rico, 1992-12)
      The purpose of this paper is to design filters capable of extracting the contours of an image, thus reducing the distortion while processing an image. In order to attain this goal, we developed a group of computer programs ...
    • Fingerprints Recognition Using a Neural Network 

      López Bonilla, Roman E.; Mayorga Ortiz, Pedro (Polytechnic University of Puerto Rico, 1999-06)
      A fingerprint recognition approach, based on a backpropagation algorithm using a neural network, is presented. The purpose of our work is to show the relevance of the fingerprint method characterization by using the ...
    • Food Trucks Puerto Rico App 

      Sánchez Sánchez, Darwin O. (Polytechnic University of Puerto Rico, 2018)
      In Puerto Rico there are many food trucks with food and dishes that are not seen in any restaurant and not many people know them. Over the years, more food trucks have been added to Puerto Rican food with creative dishes ...
    • Formulación de un modelo lagrangiano de partículas para simular la difusión de contaminantes atmosféricos. I 

      Méndez Tejeda, Rafael (Polytechnic University of Puerto Rico, 1998-06)
      One of the most relevant aspects the atmosphere is its capacity for transporting substances, heat or momentum vertically among different levels. This property is of fundamental importance in the troposphere because otherwise ...
    • Función para la entrada de datos en programas escritos utilizando el compilador QuickBasic 

      Lebrón González, José R. (Polytechnic University of Puerto Rico, 1992-06)
      This document shows a data entry function written in the QUICKBASIC version of the BASIC computer programming language that can be used for the development of engineering application programs. The function uses many of the ...
    • Fundamentos Filosóficos y Económicos de la Actividad Empresarial en una Economía de Libre Mercado Capitalista 

      Dávila Aponte, Edwin (Polytechnic University of Puerto Rico, 2018)
      La actividad empresarial en una economía de libre mercado capitalista se ve incentivada por los beneficios que se pueden alcanzar en términos de ganancias o pérdidas. Para que estos beneficios se puedan alcanzar tiene ...
    • The generalized cross-product of vectors 

      Deschapelles, Bernardo (Polytechnic University of Puerto Rico, 1993-12)
      The meaning of the scalar product of two vectors can be easily extended to a space of n dimensions. Similar generalization, related to the cross-product of vectors with more than three components, has not been formulated ...
    • Global Supplier Quality Performance Monitoring Scorecard 

      Gendes Alonso, Sabrina (Polytechnic University of Puerto Rico, 2022)
      Monitoring the performance of suppliers in any industry ensures the continuos improvement of the relationship between a supplier-customer through the identification of gaps between the current performance and the customer ...
    • Golden section search solution of single variable optimization problems using MathCad 

      Veras, Eduardo J. (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 ...
    • Granulation Area Capacity Increase 

      Torres Colón, Luis Daniel (Polytechnic University of Puerto Rico, 2022)
      Manufacturing pharmaceuticals are continuously looking for waste reduction to improve their processes and increase the manufacturing output. Granulation area capacity increase was evaluated for a solid dosage pharmaceutical ...
    • Group technology and cellular manufacturing systems: an introduction 

      Cedeño, Angel A. (Polytechnic University of Puerto Rico, 1997-12)
      Global market competition is changing the nature of the present and future marketplace to a highly dynamic environment. Product variety is high and individual product demands are low. Also, customer's demand for faster ...
    • Guía para el Desarrollo de Proyectos de Construcción de la Autoridad de Carreteras y Trasnportación de Puerto Rico 

      Laham Bauzó, Salim (Polytechnic University of Puerto Rico, 2014)
      Este artículo presenta los procesos típicos para el desarrollo de proyectos de construcción de la Autoridad de Carreteras y Transportación de Puerto Rico. Se enumeran las acciones que se deben ejecutar secuencialmente ...
    • Hadamard matrices, strongly regular graphs, and Galois fields 

      Sarmiento, Jorge (Polytechnic University of Puerto Rico, 1994-06)
      In this paper the author uses the concept of circulant matrices and the superposition principle to find, from the adjacency matrices of three regular graphs of order 8 and degree 2, tire adjacency matrix, M, of a strongly ...
    • Heladas Eternidades: Del Caimán nace el Vampiro 

      Santos, José E. (Polytechnic University of Puerto Rico, 2014)
      Ensayo del Profesor y Crítico Literario José E. Santos sobre el poeta, narrador, antólogo, ensayista, pintor y Profesor Jan Martínez.
    • High Density Plasma Nitriding on Stainless Steel Alloys at PUPR-MC Plasma Machine 

      Rivera, Ramón; Colmenares, Franklyn; Lleonart Dávila, Giovanni; Leal, David; Gaudier, Jorge; González Lizardo, Ángel E.; Leal Quirós, Edbertho; Burgos Saldaña, Gilmer (Polytechnic University of Puerto Rico, 2008)
      A novel method of nitriding at high current levels at Polytechnic University of Puerto Rico Mirror Cusp plasma machine (PUPR-MC) has been performed. Nitrogen ions implantation or plasma nitriding increases the hardness at ...
    • Historia de la ingeniería eléctrica, un formidable motor propuldor de la presente y futuras civilizaciones 

      Iriarte, Modesto (Universidad Politécnica de Puerto Rico, 1998-12)
      In this article the reader will find a historic account of the scientific discoveries that provided the foundations of electrical engineering as a profession. The article also presents a list of names of those scientists ...