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Mostrando ítems 61-80 de 285

    • Electrical distribution system for the Cantera Península Community (Santa Elena and Condadito Final sectors) 

      Bernard, Félix; León, Carlos; Lizardi, Franz; Ortiz, José A.; Santiago, José O. (Polytechnic University of Puerto Rico, 1995-12)
      The primary objective of this project is improving the quality of life of the Peninsula de Cantera residents. Our collaboration in this improvement deals with infrastructure, specifically with the electric power service. ...

    • Diseño de un motor sincrónico y su sistema de protección 

      Del Río Mora, Ángel (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 ...

    • Design of an automatically guided mechanical manipulator 

      Veras, Eduardo J. (Polytechnic University of Puerto Rico, 1995-12)
      An automatically guided mechanical manipulator is an electromechanical « device used for transportation and material handling. A combination of k electronics control and mechanics (mechatronics) design and analysis is » ...

    • Diseño de un experimento para una máquina de embotellado 

      Muñoz Cabán, Carmen; Vázquez Soto, Guillermo A. (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 ...

    • Subscriber line automatic identification number device 

      Lozada, Roberto; Sánchez, Pedro A. (Polytechnic University of Puerto Rico, 1995-12)
      The subscriber line automatic identification number device, SLAIN device, is an apparatus that may be utilized as the subscriber's end section of a telephone privatization system. This system will not utilize any equipment ...

    • 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 ...

    • Pull system implementation in a welding area 

      de Ia Mata, Milagros; González Torres, Daniel E. (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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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.

    • 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, ...

    • 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 ...

    • 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 ...

    • 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.