Romero García, Vicente; Sánchez Pérez, Juan Vicente; Castiñeira Ibáñez, Sergio; García-Raffi, L. M.(American Institute of Physics (AIP), 2010)
We show both experimentally and theoretically the evanescent behavior of modes in the band gap of finite phononic crystal (PC). Based on experimental and numerical data we obtain the imaginary part of the wave vector in ...
Calabuig, J. M.; García-Raffi, L. M.; García-Valiente, Albert; Sánchez Pérez, Enrique Alfonso(MDPI AG, 2020-08)
[EN] We show a simple model of the dynamics of a viral process based, on the determination of the Kaplan-Meier curvePof the virus. Together with the function of the newly infected individualsI, this model allows us to ...
Jimenez, Noe; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Romero García, Vicente; García-Raffi, L. M.; Staliünas, Kestutis(American Physical Society, 2016-11-23)
The formation of high-order Bessel beams by a passive acoustic device consisting of an Archimedes' spiral diffraction grating is theoretically, numerically, and experimentally reported in this paper. These beams are ...
Salmerón Contreras, Luis José; García-Raffi, L. M.; Jimenez, Noe; Mehrem, Ahmed; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] In this work we study numerically the existence of gap solitons in an acoustic media. To approach the
problem a set of coupled-mode equations are given. In order to obtain a solitary wave in a real media,
it is necessary ...
Romero García, Vicente; Fuster García, Elíes; Sánchez Pérez, Juan Vicente; García Raffi, Luis Miguel; Blasco, Xavier; Herrero Durá, Juan Manuel; Sanchís Saez, Javier(Springer Verlag (Germany), 2007)
[EN] It is well known that Genetic Algorithms (GA) is an optimization method which can be used in problems where the traditional optimization techniques are difficult to be applied. Sonic Crystals (SC) are periodic structures ...
Romero García, Vicente; Sánchez Pérez, Juan Vicente; García-Raffi, L. M.; Herrero Durá, Juan Manuel; García Nieto, Susana; Blasco Ferragud, Francesc Xavier(American Institute of Physics (AIP), 2008)
An improvement in the attenuation capabilities of acoustic metamaterials by means of the creation of defects is considered here as a multiobjective optimization problem. From this point of view, it is possible to define ...
Romero García, Vicente; Sánchez Pérez, Juan Vicente; García Raffi, Luis Miguel; Herrero Durá, Juan Manuel; García Nieto, Susana; Blasco, Xavier(Acoustical Society of America, 2009)
An exhaustive study has been made into the potential improvement in attenuation and focusing of phononic crystal arrays resulting from the deliberate creation of vacancies. Use is made of a stochastic search algorithm based ...
Romero García, Vicente; Fuster García, Elíes; García-Raffi, L. M.; Sánchez Pérez, Juan Vicente; Uris Martínez, Antonio(American Physical Society, 2007)
[EN] Sonic crystals are defined as materials consisting of periodic distributions of acoustic scatterers in another medium with different elastic properties. These materials present two main acoustical features: they present ...
Calabuig, J. M.; García-Raffi, L. M.; García-Valiente, A.; Sánchez Pérez, Enrique Alfonso(Frontiers Media S.A., 2021-10-25)
[EN] Countries are recording health information on the global spread of COVID-19 using different methods, sometimes changing the rules after a few days. All of them are publishing the number of new individuals infected, ...
Calabuig, J. M.; Ferrando Palomares, Irene; Gallart-Palau, Cesar; García-Raffi, L. M.; Sierra Galdón, Lorena; Hurtado Soler, Desamparados(Graó, 2015-07)
[ES] El objetivo de este trabajo es mostrar cómo la modelización se puede integrar a
todos los niveles del sistema educativo, desde primaria hasta la educación superior.
A partir de las experiencias descritas, se puede ...
Gallart Palau, César(Universitat Politècnica de València, 2016-09-01)
[EN] The concept of competency has become more and more important in our educational system, partly due because of external tests assessing educational quality, as PISA, highlight the need not only to introduce methodological ...
Romero García, Vicente; Vasseur, Jerome; Hladky Hennion, A. C.; García Raffi, Luis Miguel; Sánchez Pérez, Juan Vicente(American Physical Society, 2011-12)
This work theoretically and experimentally reports the evanescent connections between propagating bands in periodic acoustic materials. The complex band structures obtained by solving for the k(¿) problem reveal a complete ...
Herrero Durá, Iván; Cebrecos Ruiz, Alejandro; García Raffi, Luis Miguel; Romero-García, Vicente(Universitat Politècnica de València, 2019-07-31)
[EN] Matrices are introduced in mathematical subjects in connection with vector spaces and linear algebra, being disconnected from their applications in other fields of science and engineering studies. The transmission of ...
Romero García, Vicente; Sánchez Pérez, Juan Vicente; García Raffi, Luis Miguel(Japan Society of Applied Physics, 2012-07-20)
Inverse-designed scattering acoustical elements, called quasi-ordered structures (QOSs), are theoretically and experimentally reported in this work, showing their possibilities as attenuation devices. Multiobjective ...
Archilla, J.F.R.; Kosevich ., Yuri; Jimenez, Noe; Sánchez Morcillo, Víctor José; García-Raffi, L. M.(Department of Physics and Astronomy of the National Academy of Sciences of Ukraine, 2013)
We consider a model made out of identical particles that repel each other with the Coulomb interaction. We study numerically and analytically the existence and properties of supersonic kinks, showing that they are very ...
Romero García, Vicente; Krynkin, A.; García-Raffi, L. M.; Umnova, O.; Sánchez Pérez, Juan Vicente(Elsevier, 2013-01-07)
An acoustic metamaterial made of a two-dimensional (2D) periodic array of multi-resonant acoustic scatterers is analyzed both experimentally and theoretically. The building blocks consist of a combination of elastic beams ...
Barguet, L.; Romero-García, V.; Jimenez, Noe; García-Raffi, L. M.; Sánchez Morcillo, Víctor José; Groby, J.-P.(Nature Publishing Group, 2021-01-12)
[EN] We present a 3-dimensional fully natural sonic crystal composed of spherical aggregates of fibers (called Aegagropilae) resulting from the decomposition of Posidonia Oceanica. The fiber network is first acoustically ...
Garcia Masso, Xavier; Serra Añó, Pilar; García-Raffi, L. M.; Sánchez Pérez, Enrique Alfonso; Giner-Pascual, M.; González, L.M.(Georg Thieme Verlag, 2014-11)
The aim of the present study is to obtain models for estimating energy expenditure based on the heart rates of people with spinal cord injury without requiring individual calibration. A cohort of 20 persons with spinal ...
Mehrem Issa Mohamed Mehrem, Ahmed(Universitat Politècnica de València, 2017-05-02)
The natural dynamics are not ideal or linear. To understand their complex behavior, we needs to study the nonlinear dynamics in more simple models. This thesis is consist of two main setups. Both setups are simplified ...
Mehrem, Ahmed; Jimenez, Noe; Salmerón-Contreras, L. J.; García-Andrés, Francesc Xavier; García-Raffi, L. M.; Picó Vila, Rubén; Sánchez Morcillo, Víctor José(American Physical Society, 2017)
[EN] The propagation of nonlinear waves in a lattice of repelling particles is studied theoretically and experimentally. A simple experimental setup is proposed, consisting of an array of coupled magnetic dipoles. By driving ...