Ara es mostren els items 23708-23727 de 84474

  • Digimatge, a Rich Internet Application for video retrieval from a Multimedia Asset Management system 

    Giró Nieto, Xavier; Salla, Ramon; Vives, Xavier (2010)
    Comunicació de congrés
    Accés obert
    This paper describes the integration of two new services aimed at assisting into the retrieval of video content from a Multimedia Asset Manager (MAM). The first tool suggest tags after an first textual query, and the ...
  • Digital access to comparison-based tree data structures and algorithms 

    Roura Ferret, Salvador (1999-07)
    Report de recerca
    Accés obert
    This paper presents a simple method to build tree data structures which achieve just O(log N) visited nodes and O(D) compared digits (bits or bytes) per search or update, where N is the number of keys and D is the length ...
  • Digital Adaptive Predistortion for Unmanned Aircraft Vehicles Communications with Under-Sampling Restoration Method 

    Wang, Teng (Universitat Politècnica de Catalunya, 2014-12-17)
    Projecte Final de Màster Oficial
    Accés obert
    Nowadays, the Unmanned Aerial Vehicle (UAV) become more and more popular in aerial photography, especially in mini and micro size UAV. The UAV used for aerial photography usually use a high power video transfer communication ...
  • Digital AFC control of a three-phase three-wire unity-power-factor PWM rectifier 

    Orellana Barceló, Marcos; Griñó Cubero, Robert (IEEE, 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Nowadays, ac/dc power converters must fulfill more and more design constraints with respect to the electrical grid: harmonics reduction, operation with sags and swells and/or high grid impedances, etc. This is a challenge ...
  • Digital and physical layer network coding performance in the context of enforced fairness 

    Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, we investigate the performance of the so-called Cross Network operating under diverse Network Coding (NC) techniques. We study the impact of Medium Access Control (MAC) layer fairness on the throughput ...
  • Digital back-end for RFI detection and mitigation in earth observation 

    Forte Veliz, Giuseppe Francesco; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    A powerful real time Radio-frequency interference (RFI) mitigation back-end system is presented in this work. The interfering signals are estimated by using the wavelet transform to utilize its effective denoising capability. ...
  • Digital back-end for RFI detection and mitigation in microwave radiometers 

    Forte Veliz, Giuseppe Francesco; Camps Carmona, Adriano José; Ramos, I.; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Radio-frequency interference (RFI) is a serious problem in microwave radiometry. In order to process the received data in real time, a powerful back-end for RFI detection and mitigation system must be implemented. This ...
  • Digital Beamforming Implementation on an FPGA Platform 

    Bernal Casas, David (Universitat Politècnica de Catalunya, 2007-07)
    Projecte/Treball Final de Carrera
    Accés obert
    The objective of the work presented is to implement a Digital Beamforming (DBF) platform for an antenna array receiver designed for the S-DMB system. Our project deals with the design of antenna arrays from a hardware ...
  • Digital blood image processing and fuzzy clustering for detection and classification of atypical lymphoid B cells 

    Alférez Baquero, Edwin Santiago; Merino, Anna; Mújica Delgado, Luis Eduardo; Ruiz Ordóñez, Magda; Bigorra, Laura; Rodellar Benedé, José (EUETIB, 2013-12)
    Text en actes de congrés
    Accés obert
    Automated systems for digital peripheral blood (PB) cell analysis operate most effectively in non-pathological samples. The paper deals with the automatic classification of atypical lymphoid cells using digital image ...
  • Digital coherent receiver for orbital angular momentum demultiplexing 

    Belmonte Molina, Aniceto; Pérez Torres, Juan (2013-01-15)
    Article
    Accés obert
    We put forward a type of receiver for coherent detection of the photon orbital angular momentum (OAM). A coherent array receiver, consisting of multiple subapertures, with each subaperture coupled to a single-mode fiber, ...
  • Digital coherent transceiver for optical communications: from design to implementation 

    Anzuola Valencia, Esdras (Universitat Politècnica de Catalunya, 2012-02)
    Projecte Final de Màster Oficial
    Accés obert
    [ANGLÈS] In this project we analyze the theoretical models of optical coherent communication systems as well as the front-end arquitectures used to implement them. Key concepts as balanced photo detection and quantum limit ...
  • Digital Communication System with Multi-carrier Modulation (OFDM) for Power Line Communication 

    Ramírez Jávega, Francisco (Universitat Politècnica de Catalunya, 2008-10)
    Projecte/Treball Final de Carrera
    Accés obert
    Se propone el un diseño para un receptor OFDM. El esquema de sincronismo esta dividido en cuatro partes para estimar el sincronismo de los simboles, el offset frecuencial y el canal de transmision. Se implementa un esquema ...
  • Digital communications applied to underwater acoustics 

    Jean Bouvet, Pierre (SARTI, 2014-08)
    Article
    Accés obert
  • Digital computer simulation of monopulse antennas by exploiting a signal antenna analogy 

    Delgado Penin, José A. (1983)
    Text en actes de congrés
    Accés obert
    This paper presents a digital computer simulation meihodology approach to mono pulse antennas modeling. Emphasis is given to the techniques for this modeling. We consider two central concepts: the 'analytic signal' and the ...
  • Digital density as the driving force of digital transformation processes 

    Bush Amengual, Xavier (Universitat Politècnica de Catalunya, 2016-06-27)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb: Kungliga Tekniska Högskolan
    Digital technologies have increased the influence of technology in business, even changing busi- ness models and strategies of organisations. This influence, called Digital Transformation of Business (DT), happens when ...
  • Digital design and experimental validation of high-performance real-time OFDM systems 

    Font Bach, Josep Oriol (Universitat Politècnica de Catalunya, 2013-07-26)
    Tesi
    Accés obert
    The goal of this Ph.D. dissertation is to address a number of challenges encountered in the digital baseband design of modern and future wireless communication systems. The fast and continuous evolution of wireless ...
  • Digital fashion concept 

    Espitia, Carolina; Garza, Sofia; Greculescu, Ana; Marquet, Pauline; Schiessl, Dominik; Woznicka, Zuzanna (Universitat Politècnica de Catalunya, 2015-06)
    Treball Final de Grau
    Accés restringit per acord de confidencialitat
    This scientific report describes the process of the digitalization of the well-­‐known paper catalogue of the Spanish fashion company “Venca”, as well as the research on innovative technologies that could be implemented ...
  • Digital front-end and system overview in wireless communication 

    Bertran Albertí, Eduardo; Pagani, Maurizio (Cambridge University Press, 2011-09-29)
    Capítol de llibre
    Accés restringit per política de l'editorial
  • Digital front-end for multimode standards and multimode compatibility 

    Bertran Albertí, Eduardo (Cambridge University Press, 2011-09-29)
    Capítol de llibre
    Accés restringit per política de l'editorial
  • Digital narrations of urban history 

    Chodějovská, Eva; Lelo, Keti (Università degli Studi Roma Tre / Centre de Política de Sòl i Valoracions, 2014-09)
    Text en actes de congrés
    Accés obert