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Now showing items 2910-2929 of 255418
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A new coastal upwelling index generated with surface current estimations from high-frequency radars
(SARTI, 2024)
Article
Open AccessCoastal upwelling has been extensively studied as it plays a critical role in the connectivity between offshore waters and coastal ecosystems, which has impacts on water quality, fisheries, and aquaculture production. ... -
A "realidade" do espaço e o "ser arquitetônico": introdução ao espaço da arquitetura de Evaldo Coutinho
(Universitat Politècnica de Catalunya, 2014-06)
Master thesis
Open Access -
A (i)mobilidade como reflexo das desigualdades no espaço urbano
(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 AccessO 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
(Begell House, 2023)
Conference report
Restricted access - publisher's policyClassic 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
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyA 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
(2009)
Conference report
Restricted access - publisher's policyIn 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
(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
(Universitat Politècnica de Catalunya, 2022-10-20)
Master thesis
Open Access
Covenantee: Technische Universität MünchenSuccessive 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
(2019-05-01)
Article
Open AccessIn 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
(2011-09)
Article
Restricted access - publisher's policyA 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
(Universitat Politècnica de Catalunya, 2019)
Coursework
Open Access -
A 1D lumped-parameter/3D CFD approach for pressure drop in the aortic coarctation
(Springer, 2012)
Conference report
Restricted access - publisher's policyAortic 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
(2019)
Article
Open Access -
A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures
(2022)
Conference report
Open AccessThis 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
(Elsevier, 2021-04)
Article
Open AccessThis 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
(Elsevier, 2022-01-01)
Article
Open AccessIn 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
(2020)
Conference report
Open AccessIn 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 elastic wave propagation problems
(2024-09-15)
Article
Open AccessThis paper proposes a novel hybrid methodology that combines the singular boundary method (SBM) and the method of fundamental solutions (MFS) for the computational simulation of elastic wave propagation. Particularly, the ... -
A 2.5D hybrid SBM-MFS methodology for the evaluation of free-field vibrations induced by underground railway infrastructures
(2023)
Conference report
Restricted access - publisher's policyIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference lecture
Open AccessThis 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 ...