Exploració per tema "Ones"
Ara es mostren els items 1-20 de 47
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A general framework for wave separation in the frequency domain
(2020-06)
Article
Accés obertA general framework for wave separation in the frequency domain is presented and evaluated with successful results using theoretical examples of nonlinear waves. This framework consists of a qualitative and a quantitative ... -
A new instability mechanism related to high-angle waves
(2018-06-27)
Article
Accés obertWaves with a large incidence angle in deep water can drive a morphodynamic instability on a sandy coast whereby shoreline sand waves, cuspate forelands, and spits can emerge. This instability is related to bathymetric ... -
A new method for the acquisition of arterial pulse wave using self-mixing interferometry
(2014-11-01)
Article
Accés obertIn this paper we present a technique based on self-mixing interferometry as a method for the acquisition and reconstruction of the arterial pulse wave. A modification of the classic fringe counting reconstruction algorithm ... -
A new numerical method for solving the acoustic radiation problem
(2018-03)
Article
Accés obertA numerical method of solving the problem of acoustic wave radiation in the presence of a rigid scatterer is described. It combines the finite element method and the boundary algebraic equation one. In the proposed method, ... -
Anàlisi teòrica i descriptiva de l'onatge per determinar si és possible l'aprofitament energètic a un Imoca 60 de la BWR
(Universitat Politècnica de Catalunya, 2012-09-05)
Projecte/Treball Final de Carrera
Accés obert -
Análisis de funciones mediante wavelets y su aplicación a la compresión de imágenes SAR
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1998)
Article
Accés obert -
Assessment and improvement of the wave generation accuracy using a wave separation method
(2022-04)
Article
Accés obertFree-wave contamination is a non-desirable but frequent characteristic in many wave tank experiments. Higherorder wave generation is not widely implemented yet, whereas the effectiveness of active wave absorption systems ... -
Assessment and validation of bathymetric inversion techniques using synthetic waves
(Universitat Politècnica de Catalunya, 2019-02-18)
Treball Final de Grau
Accés obertBathymetric inversion using video images is a new and promising technique in order to monitor beach morphology. In this TFG, a Boussinesq model called FunWave and a linear wave propagation routine will be used to create ... -
Buffering and total calcium levels determine the presence of oscillatory regimes in cardiac cells
(2020-09-24)
Article
Accés obertCalcium oscillations and waves induce depolarization in cardiac cells which are believed to cause life-threathening arrhythimas. In this work, we study the conditions for the appearance of calcium oscillations in both a ... -
Changes in the occurrence of extreme wave storms in the Catalan coast: a Bayesian approach
(Universitat de Barcelona. Edicions i Publicacions, 2016)
Comunicació de congrés
Accés restringit per política de l'editorial -
Coiled phononic crystal with periodic rotational locking: subwavelength bragg band gaps
(American Physical Society (APS), 2022-07-15)
Article
Accés obertPhononic crystals (PnC) are spatially periodic materials with band gaps that form by Bragg scattering of elastic waves. Within the frequency range of a band gap, wave propagation is not admitted. A long-standing limitation ... -
Comparison of B-spline and Zernike fitting techniques in complex wavefront surfaces
(Proc.SPIE Press, 2005-06-13)
Article
Accés obert -
Controlling the likelihood of rogue waves in an optically injected semiconductor laser via direct current modulation
(2014-03-06)
Article
Accés obertExtreme and rare events are nowadays the object of intensive research. Rogue waves are extreme waves that appear suddenly in many natural systems, even in apparently calm situations. Here we study numerically the rogue ... -
Deployable Fresnel zone plate antenna for CubeSats
(Universitat Politècnica de Catalunya, 2022-04-29)
Comunicació de congrés
Accés obertEarth Observation satellite missions can provide global and frequent coverage. In the past decade we have seen an explosion of these missions based on three unit CubeSats, notably with Planet and Spire constellations of ... -
Determinació experimental de les propietats de les argiles de Trièves (França) i la seva caracterització per la velocitat de les ones S
(Universitat Politècnica de Catalunya, 2008-07)
Tesina
Accés obertLes argiles de Trièves (França) són objecte de nombrosos desordres urbanístics i rurals degut a la gran quantitat de moviments de vessant que hi tenen lloc. A Mas d'Avignonnet s'han realitzat nombrosos estudis per tal de ... -
Development of a multichannel test system for harmonic currents and flicker measurements
(Universitat Politècnica de Catalunya, 2022-06)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitat -
DFB laser reallocation by thermal wavelength control for statistical udWDM in PONs
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialWe demonstrate a simple fast method of laser wavelength channel switching for the wavelength management of UDWDM-PONs where the ONUs have source wavelengths with random distribution and are controlled with limited thermal ... -
Directional invisibility by genetic optimization
(2018-11-26)
Article
Accés obertIn this Letter, the design of a directional optical cloaking by a genetic algorithm is proposed and realized experimentally. A three-dimensional finite-difference time-domain method is combined with the genetic optimization ... -
Disseny d’una Artificial Surf Reef (ASR) per a la costa catalana
(Universitat Politècnica de Catalunya, 2022-07-14)
Treball Final de Grau
Accés obertSurfejar a Catalunya no és cap fantasia, de fet aquest esport s’ha convertit en quasi una moda a la capital Barcelonina. Els inicis del Surf a Barcelona daten dels principis dels anys 90. El precedent el van portar ... -
Dissipation Induced Modulation Instability: New Applications for Frequency Combs and Pulses Generation
(Institute of Electrical and Electronics Engineers (IEEE), 2018-11-15)
Text en actes de congrés
Accés restringit per política de l'editorialWe present a new technique based on a dissipation induced modulation instability, caused by unbalanced spectral dissipation for signal and idler waves, with applications in amplifiers and parametric oscillators but especially ...