ListarRevista Politechnê por tema "Polytechnic University of Puerto Rico--Faculty--Research"

Mostrando ítems 1-20 de 124

    • ADSL: The Best Choice for Fast Internet Access 

      Rodríguez, Raquelimar; González, Rita; López, Wilfredo; González, Félix; Cruz, Alfredo (Polytechnic University of Puerto Rico, 2000-12)
      There is a real need for the increased bandwidth at a tower cost provided by ADSL (Asymmetric Digital Subscriber Line). The time is ripe for deployment due to the current competitive environment, and both A DSL transport ...

    • Análisis de corto circuito considerando cargas 

      Sánchez del Río, Ángel (Polytechnic University of Puerto Rico, 1991-12)
      Short circuit analysis is usually simplified neglecting shunt connections including system loads. If under particular conditions, system loads cannot be neglected, the superposition principle can be used, adding pre-fault ...

    • Antena inteligente con haces conmutados para redes de comunicaciones móviles* 

      Zaharov, Viktor; Acosta, James (Polytechnic University of Puerto Rico, 2005)
      The smart antenna technology for mobile communications has been the object of enormous worldwide interest during the last decade. The principal reason for the application of smart antennae is their potential for a large ...

    • Aplicación de sistemas de información geográfica en el análisis de la isla de calor urbana 

      Matos Flores, Raúl; Rodríguez Rivera, Marisol (Universidad Politécnica de Puerto Rico, 1998-12)
      An urban heat island has been described as the difference in temperature between the city and its peripheral rural area. It is caused mainly by the growth of the city not taking into consideration the conditions previous ...

    • An approach in statistical control chart design 

      Rodríguez-Mombille, René (Polytechnic University of Puerto Rico, 1992-06)
      Several questions arise when designing statistical process control charts Is the control chart sensitive enough to detect a particular process shift with a particular frequency? When should a process shift be considered ...

    • Aprendizaje mediante la colaboración grupal (Cooperative Learning) 

      Charón, Sergio (Universidad Politécnica de Puerto Rico, 1998-12)
      This work illustrates the needs of exposing the students to learning experiences that develop and enhance their capabilities for analytical critical thinking in the solution of problems. The work in small groups with ...

    • Architects and engineers: What makes the difference? 

      Vélez Delgado, Gilberto A. (Polytechnic University of Puerto Rico, 1997-12)
      The historic dispute between architects and engineers, particularly civil engineers, is nonsense. Both professions are prestigious and dedicate themselves to covering separate and distinct aspects of the design of buildings ...

    • Automation of Plasma Diagnostics at Polytechnic University of Puerto Rico 

      Sánchez, Samuel; Colmenares, Franklyn; González Lizardo, Ángel E.; Leal Quirós, Edbertho (Polytechnic University of Puerto Rico, 2008)
      This work presents an ongoing effort to develop an automatic measurement system for plasma diagnostics at the Plasma Engineering Laboratory of Polytechnic University of Puerto Rico, along with an example of its operation. ...

    • Basic Plasma Diagnostics: Probes and Analyzers 

      Leal Quirós, Edbertho; González Lizardo, Ángel E. (Polytechnic University of Puerto Rico, 2008)
      What is plasma? Plasma is the fourth state of matter. Plasma are conductive assemblies of charged particles, neutrals and fields that exhibit collective effects. Plasma is profoundly influenced by the electrical interaction ...

    • Bibliografía selecta: Recursos de información en Ciencias Geomáticas 

      Grajales Suárez, Maritza; Colón Mercado, Marcos (Polytechnic University of Puerto Rico, 2006)
      La diseminación de la información es una de las razones de porqué el conocimiento ha adelantado tanto desde la segunda mitad del siglo XX. En este siglo se multiplicará de tal forma que es imposible sospechar los niveles ...

    • Breve relato de la historia de los programas de Bachillerato en Agrimensura en Puerto Rico 

      Negrón, Jenaro R. (Polytechnic University of Puerto Rico, 2006)
      Discurso editado, presentado por el Profesor Jenaro R. Negrón el 21 de febrero de 2006 en el Cuadragésimo Aniversario del Programa de Agrimensura de la Universidad Politécnica de Puerto Rico.

    • Bridges under dynamic loads: comparison between finite element analysis and experimental results 

      Tito Izquierdo, Jorge A.; Rodríguez Agrait, Leandro (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 ...

    • Changing Behaviors: Re - Conceptualization of a Tutoring Center 

      Miranda, Iris (Polytechnic University of Puerto Rico, 2004)
      The following article introduces a novel constructivist tutoring system, its origins, concepts, methods and its impact in the student population. To optimize the performance and strategic planning of the Center, a software ...

    • Classification of nr-graphs 

      Sarmiento, Jorge (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 ...

    • Colapso de un muro de contención construido con mampostería 

      Díaz Vázquez, Clariluz; Tito Izquierdo, Jorge A. (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 ...

    • Comparison of the Quality System Requirements of Code of Federal Regulations Part 820 and International Standard ISO 13485 

      Figueroa, Yazmín (Polytechnic University of Puerto Rico, 2010)
      This paper compares the quality system requirements of the Code of Federal Regulations 21 CFR part 820 with the quality system requirements of the International Standard ISO 13485. The medical devices industry that distributes ...

    • Compendio sobre diseño de plantas de tratamiento de aguas negras 

      Tejada Ríos, Pedro J. (Polytechnic University of Puerto Rico, 1993-06)
      This article presents the essential considerations for designing wastewater treatment plants. It also introduces a computer program to design wastewater treatment plants. The author used Basic to develop this program, which ...

    • Configuraciones proyectivas ortomodulares y retículos cúbicos 

      Sarmiento, Jorge (Polytechnic University of Puerto Rico, 1995-12)
      Orthomodular projective configurations and cubic lattices The author shows the construction of a cubic, connected, orthomodular attice of height 3, from a connected, orthomodular, projective configuration and gives the ...

    • Conforte con acondicionamiento de aire 

      Vélez Delgado, Gilberto A. (Polytechnic University of Puerto Rico, 1991-06)
      Recorrido por toda la superficie terrestre cubriendo los cuatro cabos de la tierra para observar las caracteristicas ambientales que dominan en regiones particulares.

    • Cryptography and Steganography: Security in Electronic Transactions 

      Barbosa, Angel O.; Acevedo, Idelfonso; Rodríguez, Janneth; Shehadeh, Abed; Cruz, Alfredo (Polytechnic University of Puerto Rico, 2000-12)
      A new use for two ancient arts and sciences; Cryptography and Steganography are now as useful as they were thousands of years ago. The digital communication security rests mainly on the developments of these two methodologies ...