Now showing items 1-20 of 271

    • Real-time diabetic retinopathy patient screening using multiscale AM-FM methods 

      Murray, Victor; Agurto, Carla; Barriga, Simon (Institute of Electrical and Electronics Engineers, 2012-10)
      Acceso abierto
      n this paper we present a robust and improved system for diabetic retinopathy (DR) screening. The goal of the system is to automatically screen out digital fundus photographs of diabetic patients who do not present signs ...
    • Determinación de compuestos fenólicos y actividad antioxidante de extractos de alcachofa (Cynara scolymus L.) 

      Cruzado, Martín; Pastor, Ana; Castro, Nino; Cedrón, Juan Carlos (Sociedad Química del Perú, 2013-01)
      Acceso abierto
      Como parte de un proyecto con la empresa Danper Perú, se evaluó el contenido de compuestos fenólicos y la actividad antioxidante de diversos extractos de alcachofa (Cynara scolymus L.), cultivada en el norte del Perú ...
    • Metabolitos secundarios del liquen Hypotrachyna chicitae 

      Castro Mandujano, Olivio; Cedrón, Juan Carlos (Sociedad Química del Perú, 2013-06)
      Acceso abierto
      En el presente trabajo se estudió el liquen Hypotrachyna chicitae, recolectado en el departamento de Junín (Perú). Del extracto con cloroformo se aislaron dos metabolitos mayoritarios, los cuales fueron elucidados por ...
    • Fractional Order PD and PID Position Control of an Angular Manipulator of 3DOF 

      Rojas Moreno, Arturo; Jara Sandoval, Victor (Institute of Electrical and Electronics Engineers, 2013-10)
      Acceso abierto
      This paper deals with the implementation of two position control systems: FOPID (Fractional Order Proportional Integral Derivative) and FOPD (FO Proportional Derivative), which are employed to control simultaneously angular ...
    • Embedded position control system of a manipulator using a robust nonlinear predictive control 

      Rojas-Moreno, Arturo; Valdivia-Mallqui, Richard (Institute of Electrical and Electronics Engineers, 2013-11)
      Acceso abierto
      This paper deals with the implementation of a embedded position control system using a robust nonlinear predictive controller, which is employed to control simultaneously angular positions of the base and arm of an angular ...
    • Automated vision-based system for parallel contactless micromanipulation 

      Vela, Emir; Hafez, Moustapha; Regnier, Stephane (Institute of Electrical and Electronics Engineers, 2013-11)
      Acceso abierto
      This paper presents the automated parallel noncontact manipulation of glass beads ranging from 30 up to 300 μm in size under water. Non-contact micromanipulation is performed by generating controllable laser-induced ...
    • Análisis de biodiesel preparado a partir de residuos de aceite doméstico, mediante RMN 

      Cedrón, Juan Carlos; Moncada, Arturo; Mendoza, Piero (Sociedad Química del Perú, 2014-01)
      Acceso abierto
      Se preparó biodiesel a partir de residuos de aceite doméstico, mediante la reacción de transesterificación usando etanol. El rendimiento de la reacción fue del 78%, y el producto obtenido fue caracterizado por sus propiedades ...
    • Despeckle filtering for multiscale amplitude-modulation frequency-modulation (AM-FM) texture analysis of ultrasound images of the intima-media complex 

      Loizou, C.P; Murray, V; Pattichis, M.S; Pantziaris, M; Nicolaides, A.N; Pattichis, C.S. (Hindawi Publishing Corporation, 2014-03-09)
      Acceso abierto
      The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). Typically, the IMT grows with age and this is used as a sign of increased risk of ...
    • Design of an 10 kVA-45 A automatic static transfer switch module 

      Noel, Julien George Andre (Institute of Electrical and Electronics Engineers, 2014-04-08)
      Acceso abierto
      Uninterruptible Power Supplies (UPS’s) are designed to provide emergency power when the main power source fails. To avoid this impact and to protect effectively the loads, one solution is to provide a redundant loading ...
    • Contactless automated manipulation of mesoscale objects using opto-fluidic actuation and visual servoing 

      Vela, Emir; Hafez, Moustapha; Régnier, Stéphane (AIP Publishing, 2014-05)
      Acceso abierto
      This work describes an automated opto-fluidic system for parallel non-contact manipulation of microcomponents. The strong dynamics of laser-driven thermocapillary flows were used to drag microcomponents at high speeds. ...
    • Industrial Internet education: Issues and opportunities 

      Pimentel, Juan R.; Rojas-Moreno, Arturo (Institute of Electrical and Electronics Engineers, 2014-06)
      Acceso abierto
      We propose an approach for addressing the challenges and meeting the needs of industrial networking education. The approach is based on using open source resources, key networking technologies, and an experimental framework ...
    • Scalable Open-Source Architecture for Real-Time Monitoring of Adaptive Wiring Panels 

      Llamocca, Daniel; Murray, Victor; Jiang, Yuebing; Pattichi, Marios (American Institute of Aeronautics and Astronautics, 2014-06-06)
      Acceso abierto
      We recently introduced the first prototype of an Adaptive Wiring Panel (AWP) which implemented a reconfigurable switch fabric that allows dynamic routing of analog, digital, and power signals for space system applications. ...
    • 2D Instantaneous Frequency-based Method for Motion Estimation using Total Variation 

      Murray, Victor; Rodriguez, Paul; Pattichis, Marios (Institute of Electrical and Electronics Engineers, 2014-12)
      Acceso abierto
      We present a first approach to a new method to compute the motion estimation in digital videos using the two-dimensional instantaneous frequency information computed using amplitude-modulation frequency-modulation (AM-FM) ...
    • Research laboratories and training undergraduate students from the freshman level to produce international conference-level publications 

      Murray, Victor; Matsuno, Cecilia (Institute of Electrical and Electronics Engineers, 2014-12)
      Acceso abierto
      We present the first results of the teaching methodology applied at the Universidad de Ingeniería y Tecnología (UTEC), Lima, Peru, to involve undergraduate engineering students in advanced research projects starting at ...
    • 2D amplitude-modulation frequency-modulation - based method for motion estimation 

      Murray, Victor; Rodriguez, Paul; Noriega, Maria (Institute of Electrical and Electronics Engineers, 2015-02)
      Acceso abierto
      We present a new approach to compute the motion estimation in digital videos using 2D amplitude-modulation frequency-modulation (AM-FM) methods. The optical flow vectors are computed using an iteratively reweighted norm ...
    • Hardware implementation of a FPGA-based universal link for LVDS communications 

      Sanchez, Luis; Patiño, Giancarlo; Murray, Victor; Lyke, James (Institute of Electrical and Electronics Engineers, 2015-02-27)
      Acceso abierto
      We present the first hardware implementation for a FPGA-based universal link for the transmission of different low-voltage differential signaling (LVDS) connections through a single LVDS connection between different devices. ...
    • A refined FSDT for the static analysis of functionally graded sandwich plates 

      Mantari, J.L.; Granados, E.V. (Elsevier, 2015-05)
      Acceso abierto
      This paper presents a static analysis of functionally graded plates (FGPs) by using a new first shear deformation theory (FSDT). This theory contains only four unknowns, with is even less than the classical FSDT. In this ...
    • Dynamic analysis of functionally graded plates using a novel FSDT 

      Mantari, J.L.; Granados, E.V. (Elsevier, 2015-06)
      Acceso abierto
      The purpose of this paper is to study the vibrational behavior of advanced composite plates by using a novel first shear deformation theory (FSDT). This theory contains only four unknowns, with is even less than the classical ...
    • Field-Programmable Wiring Systems 

      Murray, Victor; Pattichis, Marios; Llamocca, Daniel (Institute of Electrical and Electronics Engineers, 2015-07)
      Acceso abierto
      Field-programmable wiring systems refer to methods and hardware that can maintain the interconnection of components of different types. Generally, field-programmable wiring systems support the use of multidomain fabrics ...
    • A multiscale decomposition approach to detect abnormal vasculature in the optic disc 

      Agurto, Carla; Yub, Honggang; Murray, Victor; Pattichis, Marios; Nemeth, Sheila; Barriga, Simon; Soliz, Peter (Elsevier, 2015-07-01)
      Acceso abierto
      This paper presents a multiscale method to detect neovascularization in the optic disc (NVD) using fundus images. Our method is applied to a manually selected region of interest (ROI) containing the optic disc. All the ...