Now showing items 2824-2843 of 245236

    • A "realidade" do espaço e o "ser arquitetônico": introdução ao espaço da arquitetura de Evaldo Coutinho 

      Faria Neves, Roberta (Universitat Politècnica de Catalunya, 2014-06)
      Master thesis
      Open Access
    • A (i)mobilidade como reflexo das desigualdades no espaço urbano 

      Souza, Eduardo Leite; Sugai, Maria Inês (Departament d’Urbanisme i Ordenació del Territori. Universitat Politècnica de Catalunya / Curso de Arquitetura e Urbanismo. Universidade do Vale do Itajaí, 2016-05-31)
      Conference report
      Open Access
      O tema mobilidade urbana tem ganhadorepercussão. Geralmente a questão é abordada como um problema em si, não como resultado de um processo social que reflete diversos fatores, interesses e correlações de forças no espaço ...
    • A 0D approach fot extended operational modeling of air ejectors in thermal systems 

      Schillaci, Eugenio; Oliet Casasayas, Carles; Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Vemula, Jagadish Babu; Duponcheel, Matthieu; Bartosiewicz, Yann; Planquart, Philippe (Begell House, 2023)
      Conference report
      Restricted access - publisher's policy
      Classic ejector models work accurately only in normal operating conditions, i.e. when the primary flow is in supercritical conditions. Moreover, they do not take into account abnormal situations, such as when the primary ...
    • A 1-D radiative transfer study of mineral dust during CHARMEX/ADRIMED 2013 campaign 

      Granados Muñoz, María José; Sicard, Michaël; Román Díez, Roberto; Benavent Oltra, Pablo; Barragán Cuesta, Rubén; Brogniez, G.; Denjean, Cyrielle; Alados-Arboledas, L; Muñoz Porcar, Constantino; Rodríguez Gómez, Alejandro Antonio; Comerón Tejero, Adolfo (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      A 1-D radiative transfer study is presented based on the measurements performed at Granada during a dust event within the framework of the ChArMEx/ADRIMED (Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative ...
    • A 1-D Thermo-Hydro-Mechanical model of the middle section of canister retrieval test 

      Zandarín, Maria Teresa; Olivella Pastallé, Sebastià; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (2009)
      Conference report
      Restricted access - publisher's policy
      In this papera 1-D model simulation of the middle section of Canister Retrieval Test, conducted at the Áspo Hard Rock Laboratory, is presented. The model considers the MX-80 bentonite block, the bentonite-rock interface ...
    • A 100h per l'excel·lència 

      Candelario Puig, Albert (Universitat Politècnica de Catalunya, 2013-11-15)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] The project consists on a theoretical paper (the memory) on operations in the business field. This paper describes the main methodologies, techniques and philosophies that make up the World Class Manufacturing. ...
    • A 12-bit SAR ADC for a flexible tactile sensor 

      Nogué I Torrent, Alex (Universitat Politècnica de Catalunya, 2022-10-20)
      Master thesis
      Open Access
      Covenantee:   Technische Universität München
      Successive Approximation Register (SAR) Analog-to-Digital Converters (ADC) are some of the most efficient ADC topologies available, allowing excellent performance values at low power consumption across a wide range of ...
    • A 125-143-GHz frequency-reconfigurable BiCMOS compact LNA using a single RF-MEMS switch 

      Heredia, Julio; Ribó i Pal, Miquel; Pradell i Cara, Lluís; Wipf, Selin Tolunay; Göritz, Alexander; Wipf, Christian; Kaynak, Mehmet (2019-05-01)
      Article
      Open Access
      In this letter, a 125-143-GHz frequency-reconfigurable BiCMOS compact low-noise amplifier (LNA) is presented for the first time. It consists of two cascode stages and was fabricated using a 0.13-µm SiGe:C BiCMOS process, ...
    • A 16-kV HBM RF ESD Protection Codesign for a 1-mW CMOS Direct Conversion Receiver Operating in the 2.4-GHz ISM Band 

      González Jiménez, José Luis; Solar, H.; Adin, Iñigo; Mateo Peña, Diego; Berenguer, Roc (2011-09)
      Article
      Restricted access - publisher's policy
      A decreasing-sized π -model electrostatic discharge (ESD) protection structure is presented and applied to protect against ESD stresses at the RF input pad of an ultra-low power CMOS front-end operating in the 2.4-GHz ...
    • A 1D analogue of the SMOS interferometer 

      Cao Labora, Gonzalo; Medina i Díez, Adrià (Universitat Politècnica de Catalunya, 2019)
      Coursework
      Open Access
    • A 1D lumped-parameter/3D CFD approach for pressure drop in the aortic coarctation 

      Soudah Prieto, Eduardo; Bordoné, Maurizio; Dadvand, Pooyan; Rossi, Riccardo (Springer, 2012)
      Conference report
      Restricted access - publisher's policy
      Aortic Coarctation is a congenital constriction of the aorta that increases blood pressure above the constriction and hinders the flow below it. Based on a 3D surface mesh of a moderate thoracic coarctation, a high quality ...
    • A 2.4 GHz CMOS class-F power amplifier with reconfigurable load-impedance matching 

      Gilasgar, Mitra; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís (2019)
      Article
      Open Access
    • A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures 

      Liravi, Hassan; Clot Razquin, Arnau; Arcos Villamarín, Robert (2022)
      Conference report
      Open Access
      This paper presents an efficient method to predict underground railway-induced vibrations. The method uses the finite element method (FEM) to model the railway tunnel structure and the singular boundary method (SBM) to ...
    • A 2.5D coupled FEM-BEM-MFS methodology for longitudinally invariant soil-structure interaction problems 

      Liravi, Hassan; Arcos Villamarín, Robert; Ghangale, Dhananjay; Noori, Behshad; Romeu Garbí, Jordi (Elsevier, 2021-04)
      Article
      Open Access
      This paper is concerned with a new prediction methodology for longitudinally invariant soil-structure interaction problems in elastodynamics. The method uses the finite-element method to model the structure, the boundary-element ...
    • A 2.5D coupled FEM–SBM methodology for soil–structure dynamic interaction problems 

      Liravi, Hassan; Arcos Villamarín, Robert; Clot Razquin, Arnau; Conto Quispe, Kenny Fernando; Romeu Garbí, Jordi (Elsevier, 2022-01-01)
      Article
      Open Access
      In this paper, a novel numerical methodology to deal with longitudinally invariant soil–structure interaction problems is proposed. The methodology uses the finite element method to model the structure and the singular ...
    • A 2.5D FEM-BEM-MFS methodology for soil-structure interaction problems in layered half-spaces 

      Liravi, Hassan; Arcos Villamarín, Robert; Ghangale, Dhananjay; Romeu Garbí, Jordi (2020)
      Conference report
      Open Access
      In this paper, a new prediction methodology to deal with longitudinally invariant soil-structure interaction problems in elastodynamics is presented. The method uses the finite-element method to model the structure, the ...
    • A 2.5D hybrid SBM-MFS methodology for the evaluation of free-field vibrations induced by underground railway infrastructures 

      Liravi, Hassan; Arcos Villamarín, Robert; Clot Razquin, Arnau; Godinho, Luis; Conto Quispe, Kenny Fernando (2023)
      Conference report
      Restricted access - publisher's policy
      In this paper, a new meshless methodology to predict underground railway-induced vibrations is presented. In contrast to previous approaches, the proposed method uses meshless methods to model both the railway tunnel ...
    • A 250-ps integrated ultra-wideband timed array beamforming receiver in 0.18 um CMOS 

      Aghazadeh Dafsari, Seyed Rasoul; Martínez García, Herminio; Aragonès Cervera, Xavier; Saberkari, Alireza (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference lecture
      Open Access
      This paper presents a 4-channel ultra-wideband (UWB) timed array beamforming receiver designed in a standard 0.18-um CMOS technology. The proposed timed array receiver achieves a maximum delay of 250 ps at the maximum beam ...
    • A 2D dual-scale method to address contact problems 

      Aramfard, Mohammad; Pérez Rafols, Francisco; Nicola, Lucia (2022-07)
      Article
      Open Access
      A seamless 2D dual-scale computational scheme is developed to study contact problems. The model consists of an atomistic domain close to the contact, coupled with an elastic continuum domain away from the contact. The ...
    • A 3-axis stabilisation platform to improve experiment conditions in parabolic flights 

      Raman, Deepa Anantha; Comesaña Cuervo, Bruno; Jurcáková, Viktória; Busom Vidal, Arnau; Crouzet, Estelle; Eritja Olivella, Antoni; Gracia García-Lisbon, Juan; Kjellman, Rebecka; Suomela, Minka; Kuhn, Thomas; Laufer, René; Persson, Olle (Universitat Politècnica de Catalunya, 2022-04-29)
      Conference lecture
      Open Access
      There are different ways of providing free-fall conditions on Earth in order to test a component, perform an experiment or demonstrate equipment before it can be included in a space mission. One of these options is a ...