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Ara es mostren els items 13688-13707 de 245705
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An accurate approach to simulate friction stir welding processes using adaptive formulation refinement
(Elsevier, 2023-07-07)
Article
Accés restringit per política de l'editorialA novel Adaptive Formulation Refinement (AFR) strategy for Friction Stir Welding (FSW) problems is presented. In FSW, the accurate computation of strains is crucial to correctly predict the highly non-linear material ... -
An accurate FIC-FEM formulation for the 1D convection-diffusion-reaction equation
(2016-01)
Article
Accés obertIn this paper we present an accurate stabilized FIC-FEM formulation for the 1D advection-diffusion-reaction equation in the exponential and propagation regimes using two stabilization parameters. Both the steady-state and ... -
An accurate method to correct atmospheric phase delay for InSAR with the ERA5 global atmospheric model
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-11)
Article
Accés obertDifferential SAR Interferometry (DInSAR) has proven its unprecedented ability and merits of monitoring ground deformation on a large scale with centimeter to millimeter accuracy. However, atmospheric artifacts due to spatial ... -
An accurate nonlocal bonded discrete element method for nonlinear analysis of solids: application to concrete fracture tests
(Springer, 2020-05)
Article
Accés obertWe present a numerical procedure for elastic and nonlinear analysis (including fracture situations) of solid materials and structures using the discrete element method. It can be applied to strongly cohesive frictional ... -
An accurate physical model for PV modules with improved approximations of series-shunt resistances
(2021-05)
Article
Accés obertAn accurate model to represent the photovoltaic modules is essential to facilitate the efficient deployment of these systems in terms of design, analysis, and monitoring considerations. In this respect, this study proposes ... -
An accurate solutionof singular thermoplastic problem of pressure –dependent plasticity
(CIMNE, 2017)
Text en actes de congrés
Accés obertThe present paper concernswith a theoretical investigation into heat generation in the continued quasi-static plane strain compression of a thin strip between two rigid, parallel perfectly rough platens. The strip material ... -
An accurate, adaptive and scalable parallel finite element framework for the part-scale thermo-mechanical analysis in metal additive manufacturing processes
(Springer, 2023-10-06)
Article
Accés restringit per política de l'editorialThis work introduces a distributed memory machine and octree-based Finite Element (FE) framework for modeling metal Additive Manufacturing (AM) processes. In this sense, an Adaptive Mesh Refinement (AMR) is used to accurately ... -
An acoustic emission activity detection method based on short-term waveform features: application to metallic components under uniaxial tensile test
(2020-08-01)
Article
Accés obertThe Acoustic Emission (AE) phenomenon has been used as a powerful tool with the purpose to either detect, locate or assess damage for a wide range of applications. Derived from its monitoring, one major current challenge ... -
An acoustic Riemann solver for large strain computational contact dynamics
(2022-08)
Article
Accés obertThis article presents a vertex-centered finite volume algorithm for the explicit dynamic analysis of large strain contact problems. The methodology exploits the use of a system of first order conservation equations written ... -
An acoustic technique for propellant gauging
(2022)
Text en actes de congrés
Accés restringit per política de l'editorialThe gauging of propellants in upper stages or satellites in orbit is a challenging task due to the absence of buoyancy, which makes liquids and gases adopt a large variety of configurations. The new Spectral Mass Gauging ... -
An acoustic treatment to mitigate the effects of the apple snail on agriculture and natural ecosystems
(MDPI, 2021-09-06)
Article
Accés obertGlobal change is the origin of increased occurrence of disturbance events in natural communities, with biological invasions constituting a major threat to ecosystem integrity and functioning. The apple snail (Pomacea ... -
An acoustic valve within the nose of sperm whales Physeter macrocephalus
(2014-04-01)
Article
Accés restringit per política de l'editorialSperm whales Physeter macrocephalus emit impulsive sound signals in short series of rhythmic clicks (codas) for communication, and in long series of single acoustic events (usual clicks) for echolocation. Both click types ... -
An acousto-ultrasonics pattern recognition approach for damage detection in wind turbine structures
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Comunicació de congrés
Accés obertThe design of a Structural Health Monitoring (SHM) systems is a requirement in the task of improving the safety and maintainability of the structures. Among the multiple techniques available for health monitoring, ... -
An active power self-synchronizing controller for grid-connected converters emulating inertia
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialRenewable energy sources are increasing their penetration in power systems, making necessary new control systems that offer services usually provided only by conventional generators. In this paper, an active power controller ... -
An active power synchronization control loop for grid-connected converters
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe increasing penetration of renewable energy sources in power systems requires new control systems that provide services similar to those of conventional generators. This paper proposes an active power controller that ... -
An active power synchronizing controller for grid-connected power converters with configurable natural droop characteristics
(2015)
Text en actes de congrés
Accés restringit per política de l'editorialImproving the dynamics of the widely applied gridconnected power converters has been drawing a lot of interests in recent years. Since the currently installed grid-connected converters doesn’t shown inertia effect in power ... -
An adaptable approach to learn realistic legged locomotion without examples
(2022)
Text en actes de congrés
Accés obertLearning controllers that reproduce legged locomotion in nature has been a long-time goal in robotics and computer graphics. While yielding promising results, recent approaches are not yet flexible enough to be applicable ... -
An adaptative deterministic sequence for sampling-based motion planners
(2004-09)
Report de recerca
Accés obertThis paper presents a deterministic sequence with good and useful features for sampling-based motion planners, On the one hand, the proposed sequence is able to generate samples over a hierarchical grid structure of the ... -
An adaptative fuzzy logic enhancer for rejection of narrowband interference in DS-Spread Spectrum
(1998)
Text en actes de congrés
Accés obertThis work develops a novel adaptive fuzzy line enhancer that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference estimation and rejection in direct sequence-spread ... -
An adaptative user interface for genealogical document transcription
(Information Science Reference, 2011)
Capítol de llibre
Accés restringit per política de l'editorialLately, genealogy has become a hobby not only in the United States, UK or France but also in many other countries where it is now widespread. The main sources of information for genealogists are different kinds of genealogical ...
