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Browsing by Subject "Dynamics"

Now showing items 1-20 of 34

"PINOT": Time-Resolved Parallel Magnetic Resonance Imaging With a Reduced Dynamic Field of View

Hamilton, Lei Hou; Acebrón Fabregat, Javier; Moratal Pérez, David; Ramamurthy, Senthil; Lerakis, Stamatios; Parks, W. James; Sallee, Denver; Brummer, Marijn E. (Wiley, 2011-04)

This article introduces a novel method named "Parallel Imaging and Noquist in Tandem" (PINOT) for accelerated image acquisition of cine cardiac magnetic resonance imaging. This method combines two prior information formalisms, ...
A class of efficient high-order iterative methods with memory for nonlinear equations and their dynamics

Howk, Cory L.; Hueso, J.L.; Martínez Molada, Eulalia; Teruel-Ferragud, Carles (John Wiley & Sons, 2018)

[EN] In this paper we obtain some theoretical results about iterative methods with memory for nonlinear equations. The class of algorithms we consider focus on incorporating memory without increasing the computational cost ...
A comprehensive model of the railway wheelset-track interaction in curves

Martínez Casas, José; Di Gialleonardo, Egidio; Bruni, Stefano; Baeza González, Luis Miguel (Elsevier, 2014-09-01)

Train-track interaction has been extensively studied in the last 40 years at least, leading to modelling approaches that can deal satisfactorily with many dynamic problems arising at the wheel/rail interface. However, the ...
A genetic algorithm to calibrate dynamical systems: Confidence intervals for parameters and residuals

Caselles Moncho, Antonio; Micó, Joan C.; AMIGÓ BORRÁS, SALVADOR (Sociedad Española de Sistemas Generales, 2018)

[EN] This paper presents a genetic algorithm to calibrate dynamical systems that is able to calculate confidence intervals for the parameters of the system. As an application case is used to calibrate the system that ...
A note on "Convergence radius of Osada s method under Hölder continuous condition"

Hueso, J.L.; Martínez Molada, Eulalia; Gupta, D.K.; Cevallos-Alarcon, Fabricio Alfredo (Elsevier, 2018)

[EN] In this paper we revise the proofs of the results obtained in "Convergence radius of Osada's method under Holder continuous condition"[4], because the remainder of the Taylor's expansion used for the obtainment of the ...
A Switchable Molecular Rotator: Neutron Spectroscopy Study on a Polymeric Spin-Crossover Compound

Rodriguez-Velamazan, J.A.; Gonzalez, M.A.; Real, J.A.; Castro, M.; Muñoz Roca, María del Carmen; Gaspar, A.B.; Ohtani, R.; Ohba, M.; Yoneda, K.; Hijikata, Y.; Yanai, N.; Mizuno, M.; Ando, H.; Kitagawa, S. (American Chemical Society, 2012-03-21)

A quasielastic neutron scattering and solid-state H-2 NMR spectroscopy study of the polymeric spin-crossover compound {Fe(pyrazine)[Pt(CN)(4)]} shows that the switching of the rotation of a molecular fragment- the pyrazine ...
Advances in the general factor of personality dynamics

Micó, Joan C.; AMIGÓ BORRÁS, SALVADOR; Caselles Moncho, Antonio (Sociedad Española de Sistemas Generales, 2018)

[EN] This paper presents a dynamical integro-differential equation to reproduce the dynamical response of the General Factor of Personality (GFP) to a stimulus dose, particularly to a stimulant drug dose. The model is ...
An entropic picture of emergent quantum mechanics

Acosta Iglesias, Dagoberto; Fernández de Córdoba Castellá, Pedro José; Isidro San Juan, José María; González-Santander Martínez, Juan Luis (World Scientific Publishing, 2012-08)

Quantum mechanics emerges à la Verlinde from a foliation of 3 by holographic screens, when regarding the latter as entropy reservoirs that a particle can exchange entropy with. This entropy is quantized in units of Boltzmann's ...
Analysis of the performance of under-sleeper pads in highspeed line transition zones

Insa Franco, Ricardo; Salvador Zuriaga, Pablo; Inarejos Mesa, Javier; Medina González, Luis (Thomas Telford Ltd., 2014)

[EN] In many high-speed railway lines, the zones between embankments and structures may present some discontinuities, in terms of track geometry and track stiffness, which may create discomfort for passengers, induce ...
Basins of attraction for various Steffensen-Type methods

Cordero Barbero, Alicia; Soleymani, Fazlollah; Torregrosa Sánchez, Juan Ramón; Shateyi, Standford (Hindawi Publishing Corporation, 2014)

The dynamical behavior of different Steffensen-type methods is analyzed. We check the chaotic behaviors alongside the convergence radii (understood as the wideness of the basin of attraction) needed by Steffensen-type ...
Bulbs of period two in the family of Chebyshev-Halley iterative methods on quadratic polynomials

Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón; Vindel Cañas, Pura (Hindawi Publishing Corporation, 2013)

The parameter space associated to the parametric family of Chebyshev-Halley on quadratic polynomials shows a dynamical richness worthy of study. This analysis has been initiated by the authors in previous works. Every value ...
Cálculo de la respuesta al desequilibrio de un rotor flexible

Rodríguez, Pablo Jesús (2017-06-28)

Modeling of a flexible shaft with a mathematical analysis program using the transfer matrix method. We will analyze the influence on the response obtained from aspects such as the number of sections used, the influence of ...
Confinement effects in the hydrogen adsorption on paddle wheel containing metal organic frameworks

Gómez, Diego A.; Combariza Montañez, Aldo Fabrizzio; Sastre Navarro, German Ignacio (Royal Society of Chemistry, 2012)

[EN] The confinement effects upon hydrogen adsorption in Cu(II)-paddle wheel containing metal-organic frameworks (MOFs) were evaluated and rationalized in terms of the structural properties (cavity types and pore diameters) ...
Desarrollo de un procesador digital de audio de 18 entradas y 18 Salidas.

Reolid Arocas, Francisco Javier (2017-10-19)

One tries to design a digital audio processor with 20 Inputs / 20 Outputs, which will consist of both analog and digital inputs and outputs. The conversion of the analog I / O will be done using codecs with 8-channel TDM ...
Desenvolupament de nous mètodes per a la resolució d'equacions i sistemes d'equacions no lineals.

Teruel Ferragud, Carles (2016-01-11)

[EN] The necessity of solving nonlinear equations and systems arises naturally in the different areas of engineering and science when integral and differential equations are discretized. Nowadays, computers have become ...
Effect of Potyvirus effective population size in inoculated leaves on viral accumulation and the onset of symptoms

Zwart, Mark Peter; Daros Arnau, Jose Antonio; Elena Fito, Santiago Fco (American Society for Microbiology, 2012)

[EN] Effective population size (N-e) is a key parameter for understanding evolutionary processes, but it is generally not considered in epidemiological studies or in studying infections of individual hosts. Whether Ne has ...
Epidemic Random Network Simulations in a Distributed Computing Environment

Villanueva-Oller, J.; Acedo Rodríguez, Luis; Moraño Fernández, José Antonio; Sánchez Sánchez, A. (Hindawi Publishing Corporation, 2013-09-17)

We discuss a computational system following the paradigm of distributed computing, which will allow us to simulate the epidemic propagation in random networks with large number of nodes up to one million. This paradigm ...
Estudio analítico y por elementos finitos de impacto en placas

Gil Romero, Jaime (2016-09-05)

[EN] The work is based on the study of simple impacts on rectangular plates made of aluminum and/or composite material, with various types of supports and for the second material with several stacking sequences. Analytical ...
Experimental theoretical methodology for determination of inertial pressure drop distribution and pore structure properties in wall-flow diesel particulate filters (DPFs)

Payri González, Francisco; Broatch Jacobi, Jaime Alberto; Serrano Cruz, José Ramón; Piqueras Cabrera, Pedro (Elsevier, 2011-12)

Wall-flow particulate filters have been placed as a standard technology for Diesel engines because of the increasing restrictions to soot emissions. The inclusion of this system within the exhaust line requires the development ...
Formalism for discrete multidimensional dynamic systems

Micó, Joan C.; Caselles Moncho, Antonio; Soler Fernández, David; Romero, Pantaleón D. (Emerald, 2016)

The purpose of this paper is to suggest a formalism given by an equation suitable for simulating discrete systems with space-time variation in addition to other change variables. With such formalism, multidimensional ...