• A Wavelet-Based Approach for Pitch Classifiers 

      Ovalles Torres, José R. (Polytechnic University of Puerto Rico, 2014)
      A pitch is a human classification method which allows ordering sounds in discrete harmonics frequencies. Although many of the practical pitch detection methods uses the autocorrelation and cepstrum techniques to ...
    • Web Attacks Analytics 

      Sanchez Pardella, Luis O. (Polytechnic University of Puerto Rico, 2020)
      Cyber-attacks are on the rise. Information systems are constantly being attacked, generating economic loss. Computer networks and web technologies are the preferred places for hackers to commit cybercrimes. Most computers ...
    • A Web Solution to Waiting Line Problem 

      Torres Carrera, José (Polytechnic University of Puerto Rico, 2012)
      Abstract – In this article I present an approach to solve the problem of wasting time waiting in a line for product or service. A solution is presented composed of a platform API and a mobile application. The solution ...
    • WECI Inventory Reduction and Just-In-Time Implementation 

      Centeno Castro, Gabriel L. (Polytechnic University of Puerto Rico, 2020)
      The organization studied showed substantially high levels of inventory, thus a reduction was in need. Given the little information available to implement this in a service environment, a new approach was needed. A mix ...
    • Wet Granulation End-Point Determination of a Drug Formulation 

      Merced Vega, Yaritza (Polytechnic University of Puerto Rico, 2019)
      Wet granulation is commonly used in oral solid dosage industry. The end-point is required to design a process that consistently meet products Critical Quality Attributes (CQAs) and the Critical Processing Parameters ...
    • What Kinds of Various Wireless Attacks can Occur in Mobile and Wireless-Driven Devices? 

      Sanabria Andrade, Manuel (Polytechnic University of Puerto Rico, 2012)
      Abstract - Networks have been recently redefined by new devices in the market. These networks, comprised of a group of electronic devices, can be connected either using cables or using wireless technologies. Also, they ...
    • Wind Blade Composite Design, Manufacturing and Experimental Testing 

      Hernández Gelpi, Miguel J. (Polytechnic University of Puerto Rico, 2013)
      The design and manufacture of composite material sandwich type blade is presented. Stainless steel rods and ribs, are the internal structure, core is foam, between ribs. The skin is a laminate of fiber glass and a ...
    • 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 ...
    • Work Sampling Mobile Application 

      Martínez Lebrón, David (Polytechnic University of Puerto Rico, 2013)
      Work Sampling is a technique used to investigate the proportions of total times devoted to the various activities that constitute a job or work situation. This statistical analysis or technique constitutes a very ...
    • Workflow Management in the Batch Record Review Process 

      Velázquez Vázquez, Michelle (Polytechnic University of Puerto Rico, 2022)
      The review of Batch Records creates a story of the materials, manufacturing, and packaging involved in the production of biopharmaceuticals. The Master Batch Record details who, when, where, and how each process stage is ...
    • Working from Home and Data Protection 

      Pérez, Omar A. (Polytechnic University of Puerto Rico, 2020)
      Thanks to the pandemic the new order is working from home. When you work from the office the security of the data is responsibility of you as employee and the corporation to provide a safe network. Maybe you see it but ...
    • Workmanship Error at Assembly Line in a Medical Device Company 

      Madrigal Negrón, Pamela (Polytechnic University of Puerto Rico, 2012)
      Abstract — In a Medical Device Company a production line had an increase of non-conformances in 2011. The category for the increase was workmanship error. These failures result in cost of poor quality due to quality holds. ...
    • The X Filed and Building Construction Site Approval 

      Gonzalez Rodriguez, Waleska L. (Polytechnic University of Puerto Rico, 2019)
      The Facility Division is currently having an engineering problem considering a site approval for construction. The engineering department need to analyze two locations and determine which one is better for the construction ...
    • X Regrind Usage for TY27MX 

      Vale-Figueroa, Marjorie (Polytechnic University of Puerto Rico, 2021)
      TY27MX is a high-runner catalog from ABB Caribe. Since the first quarter of 2020, high levels of scrap were detected at the production line caused by process variation and inherent conditions. Resin X regrind usage was ...
    • Xilinx FIR Coefficient Configuration Implemented in ROACH Architecture 

      Salado Martínez, Zoriel M. (Polytechnic University of Puerto Rico, 2014)
      Dynamically run time reconfigurable FIR Filter with a control logic architecture for Coefficient reload is designed and tested on a Xilinx Virtex 5 FPGA ROACH board for signal recording at the Arecibo Observatory. A ...
    • Y así, la hice mía 

      Gutiérrez Escobedo, Daniela (Polytechnic University of Puerto Rico, 2014)
      Relato de la cuentista y ensayista mexicana Daniela Gutiérrez Escobedo sobre la violencia de género.
    • Yarauvi: Una Isla Universal 

      Boned Purkiss, Javier (School of Architecture, Polytechnic University of Puerto Rico, 2013)
      El proyecto imaginado por Miró-Rivera supone la utilización del paisaje como “descontexto”, en un encuentro de gran fuerza semántica ente arquitectura y entorno, pero desprovisto de contenido urbano, situado en un lugar ...
    • Yield improvement for anesthesia product at filling & packaging line 

      Álvarez Rodríguez, Marietta (Polytechnic University of Puerto Rico, 2019)
      In the manufacturing process of anesthesia, the yield for Fluxane product, manufactured at ANESTHER Healthcare, is consistently performing lower than target (2.785 bottles/kg) from tank F-SV-001 in comparison to tank ...
    • Yin y Yoni 

      Ramírez Córdova, Antonio (Polytechnic University of Puerto Rico, 2022)
      Obra del poeta, dramaturgo, ensayista, narrador, crítico literario y catedrático universitario jubilado Antonio Ramírez Córdova.
    • ZAP Proxy and OWASP Top 10 

      Ramos Flores, Eduard (Polytechnic University of Puerto Rico, 2023)
      The Zed Attack Proxy is a well-known and popular assessment tool in the cybersecurity community. The Open Web Application Security Project community offers, develops, and maintains the Zed Attack Proxy. The Open Web ...