Revista Politechnê: Recent submissions

Anzeige der Dokumente 141-160 von 302

    • Leveling of Oil Fuel Prices Through Hedging Practices at the Puerto Rico Electric Power Authority 

      Iriarte, Modesto (Polytechnic University of Puerto Rico, 2000-12)
      Up to the present, all the discussions since mid 1980's regarding the convenience of leveling fuel costs have been developed on a qualitative basis. This paper will try to provide quantitative information for corporate ...

    • Wireless LANs 

      Díaz, Carmen W.; González, Luis; Reyes, Edwin; Guzmán, Jeannette; Lebrón, José Luis; Cruz, Alfredo (Polytechnic University of Puerto Rico, 2000-12)
      There are three digital wireless technologies: CDMA (Code Division Multiple Access), TDMA (Time Division Multiple access), and GSM (Global System for Mobile Communication). Ethernet is a standard LAN protocol that operates ...

    • 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 ...

    • 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 ...

    • Industrial Engineering Facilities Planning: ABC Company 

      Quiñones, Sandra (Polytechnic University of Puerto Rico, 2000-12)
      The facilities planning's objective is to organize the facilities location to achieve the best flow of information in the company. Due to the increase in the demand of the products and services. ABC is required to expand ...

    • Knowledge Management: Managing Legal Information Via the WWW and Intranet 

      Cruz, Alfredo (Polytechnic University of Puerto Rico, 2000-12)
      The legal profession is an industry that has yet to exploit the Web to its fitllest extent. In an industry that resolves around documents, issues surrounding their creation, delivery, storage and management will have ...

    • Capstone Design Project Stock Keeping Units Allocation for ICI Paints 

      Burgos Báez, Joel; González Aponte, Nancy; Vigo Avila, Luis (Polytechnic University of Puerto Rico, 2000-06)
      As part of our Capstone Design Project we will design the SKU (Stock Keeping Units) allocation system for the Imperial Chemical Industries (ICI) Paints Royal Warehouse located in Barrio Palmas, Catano. In the manufacturing ...

    • Capstone Design Project Interface Board for the HC12 Microprocessor 

      Farah Hilou, Shady; Badillo Oquendo, José A. (Polytechnic University of Puerto Rico, 2000-06)
      This project consists of the design and implementation of an interface board for the Motorola evaluation board M68HC12B32EVB. This interface will include eight different experiment for a laboratory course.

    • PLAtestGA: A CNF-Satisfiability Problem for the Generation of Test Vectors for Missing Faults in VLSI Circuits 

      Cruz, Alfredo; Mukherjee, Sumitra (Polytechnic University of Puerto Rico, 2000-06)
      An evolutionary algorithm (EA) approach is used in the development of a test vector generation application for single and multiple fault detection of growth faults in Programmable Logic Arrays (PLA). Three basic steps are ...

    • Internet Security As An E-commerce Enabler 

      González, Víctor R.; Cruz, Alfredo (Polytechnic University of Puerto Rico, 2000-06)
      In the words of futurist Joel Arthur Barker "when the paradigms shift, everything starts from ground zero". The digital revolution is swiftly reshaping all aspects of life in society "in ways and forms we cannot fully ...

    • Cryptography: Algorithms and Security Applications 

      Cruz, Alfredo; Fernández, Maxime; Díaz, Gloria; Cosme, Alberto; Negrón, Irtalis; Negrón, Priscilla (Polytechnic University of Puerto Rico, 2000-06)
      Cryptography in Computer Science and Information Systems are broad. It is based in a sequence of steps, and its premise is only one: security. One of the latest developments in cryptography is Steganography, which is the ...

    • La enseñanza de la ingeniería en el siglo XXI 

      Vélez Delgado, Gilberto A. (Polytechnic University of Puerto Rico, 2000-06)
      The teaching of the engineering disciplines during the XXI Century will continue, as has been established already, with a solid foundation in physical sciences, mathematics, liberal arts, engineering sciences and engineering ...

    • PLAGA: A Highly Parallelizable Genetic Algorithm for Programmable Logic Arrays Test Pattern Generation 

      Cruz, Alfredo; Mukherjee, Sumitra (Polytechnic University of Puerto Rico, 1999-06)
      An evolutionary algorithm (EA) approach is used in the development of a test vector generation application for single and multiple fault detection of shrinkage faults in Programmable Logic Arrays (PLA). Three basic steps ...

    • New Tools for the Design and Analysis of Complex Springs 

      Candelario, William (Polytechnic University of Puerto Rico, 1999-06)
      The molded case circuit breaker industry, in general, produces great families of breakers, i.e., the bolt-on and the plug-in units. The bolt-on unit uses a screw to connect the unit to the bus bar of the panelboard. In the ...

    • 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 ...

    • The Implementation of New Technology: Ethical Principles and Ethical Reasoning Elements 

      Malaver, Roger (Polytechnic University of Puerto Rico, 1999-06)
      We explored valuable ethical issues on the New Technology Implementation (NTI). A successful approach to assess and manage health-related issues associated with the installation of new technology (specially those related ...

    • Development of an Interactive Finite Element Analysis Program Within MS Windows 95 Environment 

      Pacheco Crosetti, Gustavo E.; Veras Jorge, Eduardo J. (Polytechnic University of Puerto Rico, 1999-06)
      The objective of this project was to develop a highly interactive, graphically oriented, special purpose Finite Element Analysis program, that utilizes the MS-Windows 95 environment as the Graphical User Interface (GUI). ...

    • PUPR Looks Forward to the 21st Century with a Program of Research and Development 

      Vélez Delgado, Gilberto A. (Polytechnic University of Puerto Rico, 1999-06)
      The New Economic Development model adopted by the Government of Puerto Rico is an effort to provide a diversified and solid foundation for future economic development in view of changes in the global economic context. The ...

    • New technologies in mathematics 

      Sarmiento, Jorge (Polytechnic University of Puerto Rico, 1998-06)
      Throughout the ages, the development of computational instruments runs parallel to the development of mathematics playing an important role in the dissemination of this subject matter and its applications. Nevertheless, ...

    • 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 ...