Anzeige der Dokumente 81-100 von 2118

    • Process control laboratory - bar code system 

      Rodríguez, María de Lourdes (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 ...
    • Reduction of downtime through the design of TPM and the implementation of some techniques of SMED system at high speed packaging lines 

      López López, Dorcas Y.; Calo Ortiz, Ralfy; Pérez Carrión, Edwin G.; Marrero Laboy, José J. (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, ...
    • Variables that may predict the behavior of a student in his/her university life at Polytechnic University of Puerto Rico 

      Vélez Delgado, Gilberto A.; Vega, Rolando (Polytechnic University of Puerto Rico, 1996-06)
      The objective of this study is to establish the relationship, if any. between the Graduation Grade Point Average (GPA) of students that began as first year studentes at Polytechnic University of Puerto Rico and remained ...
    • Determination of interface roughness and its correlation in amorphous-silicon/ amorphous-germanium multilayers 

      Pantojas, Víctor M. (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 

      Nieves Ortega, Carlos I. (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 ...
    • El Politécnico (Año 3, Edición Especial Comercial, Agosto 1996): Universidad Politécnica 30 años de excelencia. 

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1996-08)
      Periódico El Politécnico (Año 3, Edición Especial Comercial, Agosto 1996) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral. Edición Especial conmemorativa del 30mo. ...
    • El Politécnico (Año 3, Número 8, Noviembre 1996)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1996-11)
      Periódico El Politécnico (Año 3, Número 8, Noviembre 1996) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.
    • Sizing a solar cell array for a solar powered lawnmower machine 

      Veras, Eduardo J. (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 

      Resto, Javier (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 ...
    • Study of the density of states in amorphous Silicon-Hydrogen using the semiconductor/electrolyte system 

      Muñoz, William (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 

      Hernández De Luna, Julio A. (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 

      Pacheco Crosetti, Gustavo E. (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 ...
    • Determination of soil strength parameters from unconfined compression testing on partially saturated soils 

      Martínez Gómez, José Alfredo (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 

      Sarmiento, Jorge (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 

      Vélez Delgado, Gilberto A. (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.
    • El Politécnico (Año 4, Número 9, Febrero 1997) 

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1997-02)
      Periódico El Politécnico (Año 4, Número 9, Febrero 1997) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.
    • El Politécnico (Año 4, Número 10, Mayo 1997)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1997-05)
      Periódico El Politécnico (Año 4, Número 10, Mayo 1997) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.
    • Use of genetic algorithms in experimental design optimization and thermal property estimation 

      García, Sandrine (Polytechnic University of Puerto Rico, 1997-06)
      The goal of this paper is both to introduce the fields of experimental design optimization and thermal property estimation and to present Genetic Algorithm (GA) optimization method to the faculty of PUPR. This research ...
    • 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 ...
    • 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 ...