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308 results on '"Velarde, Pedro"'

62. Distributed Wasserstein Barycenters via Displacement Interpolation

Author

Cisneros-Velarde, Pedro and Bullo, Francesco

Abstract

Consider a multiagent system where each agent has an initial probability measure. In this article, we propose a distributed algorithm based upon stochastic, asynchronous, and pairwise exchange of information, and displacement interpolation in the Wasserstein space. We characterize the evolution of this algorithm and prove that it computes the Wasserstein barycenter of the initial measures under various conditions. One version of the algorithm computes a standard Wasserstein barycenter, i.e., a barycenter based upon equal weights; and the other version computes a randomized Wasserstein barycenter, i.e., a barycenter based upon random weights for the initial measures. Finally, we specialize our algorithm to Gaussian distributions and draw a connection with opinion dynamics.

Published
2023
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63. First radiative shock experiments on the SG-II laser

Author

Suzuki-Vidal, Francisco, primary, Clayson, Thomas, additional, Stehlé, Chantal, additional, Chaulagain, Uddhab, additional, Halliday, Jack W. D., additional, Sun, Mingying, additional, Ren, Lei, additional, Kang, Ning, additional, Liu, Huiya, additional, Zhu, Baoqiang, additional, Zhu, Jianqiang, additional, De Almeida Rossi, Carolina, additional, Mihailescu, Teodora, additional, Velarde, Pedro, additional, Cotelo, Manuel, additional, Foster, John M., additional, Danson, Colin N., additional, Spindloe, Christopher, additional, Chittenden, Jeremy P., additional, and Kuranz, Carolyn, additional

Published
2021
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65. Cursus juris canonici, hispani, et indici in quo juxta Ordinem titulorum Decretalium...

Author

San Martín, Juan de, 1742-1779, Editor literario, Fundación Ignacio Larramendi, Editor, DIGIBÍS, S.L.U., Productor, Murillo Velarde, Pedro, 1696-1753, San Martín, Juan de, 1742-1779, Editor literario, Fundación Ignacio Larramendi, Editor, DIGIBÍS, S.L.U., Productor, and Murillo Velarde, Pedro, 1696-1753

Abstract

La última página de la obra está desenfocada también en el original

Published
2020

66. Equation of state and opacities for warm dense matter

Author

Cotelo Manuel, de laVarga Alberto G., Velarde Pedro, and Gaufridy François de

Subjects
Physics, QC1-999
Abstract

This work presents recent developments in the calculation of opacity and equation of state tables suitable for including in the radiation hydrodynamic code ARWEN [1] to study processes like ICF or X-ray secondary sources. For these calculations we use the code bigbart to compute opacities in LTE conditions, with self-consistent data generated with the Flexible Atomic Code (FAC) [2]. Non-LTE effects are approximately taken into account by means of the new RADIOM model developed in [3], which makes use of existing LTE data tables. We use the screened-hydrogenic model [4] to derive the Equation of State (EOS) using the population and energy of each level.

Published
2013
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69. Interaction of hemispherical blast waves with inhomogeneous spheres: probing the collision of a supernova ejecta with a nearby companion star in the laboratory

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica, García Senz, Domingo, Velarde, Pedro, Suzuki Vidal, Francisco, Stehlé, Chantal, Cotelo Ferreiro, Manuel, Portillo García, David, Plewa, Tomasz, Pak, Arthur, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica, García Senz, Domingo, Velarde, Pedro, Suzuki Vidal, Francisco, Stehlé, Chantal, Cotelo Ferreiro, Manuel, Portillo García, David, Plewa, Tomasz, and Pak, Arthur

Abstract

Past laboratory experiments at high energy density have provided insights into the physics of supernovae, supernovaremnants, and the destruction of interstellar clouds. In a typical experimental setting, a laser-driven planar blast waveinteracts with a compositionally homogeneous spherical or cylindrical target. In this work we propose a new laboratoryplatform that accounts for curvature ofthe impacting shock and density stratification of the target. Both characteristicsreflect the conditions expected to exist shortly after a supernova explosion in a close binary system. We provide detailsof a proposed experimental design(laser drive, target configuration, diagnostic system), optimized to capture the keyproperties of recent ejecta–companion interaction models.Good qualitative agreement found between our experimentalmodels and their astrophysical counterparts highlights the strong potential of the proposed design to probe details of theejecta–companion interaction for broad classes of objects by means of laboratory experiments at high energy density, Peer Reviewed, Postprint (published version)

Published
2019

75. DAGON: a 3D Maxwell-Bloch code

Author

Oliva, Eduardo, additional, Cotelo, Manuel, additional, Escudero, Juan Carlos, additional, González-Fernández, Agustín, additional, Sanchís, Alberto, additional, Vera, Javier, additional, Vicéns, Sergio, additional, and Velarde, Pedro, additional

Published
2017
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76. Automatic pneumonia detection based on ultrasound video analysis

Author

Cisneros-Velarde, Pedro, primary, Correa, Malena, additional, Mayta, Holger, additional, Anticona, Cynthia, additional, Pajuelo, Monica, additional, Oberhelman, Richard, additional, Checkley, William, additional, Gilman, Robert H, additional, Figueroa, Dante, additional, Zimic, Mirko, additional, Lavarello, Roberto, additional, and Castaneda, Benjamin, additional

Published
2016
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80. Simulations of radiative shocks and jet formation in laboratory plasmas

Author

Velarde, Pedro, González, Matthias, Oliva, Eduardo, Kasperczuk, Andrzej, Pisarczyk, Tadeusz, Ullschmied, Jiri, Stehlé, Chantal, Rus, Bedrich, García Senz, Domingo|||0000-0001-5197-7100, Bravo Guil, Eduardo|||0000-0003-0894-6450, Relaño, Antonio, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica

Subjects
Plasmons (Física), Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Plasmons (Physics)
Abstract

We present the simulations of two relevant hydrodynamical problems related to astrophysical phenomena performed by three different codes. The numerical results from these codes will be compared in order to test both the numerical method implemented inside them and the influence of the physical phenomena simulated by the codes. Under some conditions laser produced plasmas could be scaled to the typical conditions prevailing in astrophysical plasmas. Therefore, such similarity allows to use existing laser facilities and numerical codes suitable to a laser plasma regime, for studying astrophysical proccesses. The codes are the radiation fluid dynamic 2D ARWEN code and the 3D HERACLES, and, without radiation energy transport, a Smoothed-Particle Hydrodynamics (SPH) code. These codes use diferent numerical techniques and have overlapping range of application, from laser produced plasmas to astrophysical plasmas. We also present the first laser experiments obtaining cumulative jets with a velocity higher than 100 km/s.

Published
2007

81. Comparison of natural and forced amplification regimes in plasma-based soft-x-ray lasers seeded by high-order harmonic

Author

Oliva, Eduardo, Zeitoun, Philippe, Fajardo, Marta, Lambert, Guillaume, Ros, David, Sebban, Stéphane, Velarde, Pedro, Oliva, Eduardo, Zeitoun, Philippe, Fajardo, Marta, Lambert, Guillaume, Ros, David, Sebban, Stéphane, and Velarde, Pedro

Abstract

The amplification of high-order harmonics (HOH) in a plasma-based amplifier is a multiscale, temporal phenomenon that couples plasma hydrodynamics, atomic processes, and HOH electromagnetic fields. We use a one-dimensional, time-dependent Maxwell-Bloch code to compare the natural amplification regime and another regime where plasma polarization is constantly forced by the HOH. In this regime, a 10-MW (i.e., 100 times higher than current seeded soft x-ray laser power), 1.5-μJ, 140-fs pulse free from the parasitic temporal structures appearing on the natural amplification regime can be obtained.

Published
2011

82. Towards Tabletop X‐Ray Lasers

Author

Zeitoun, Philippe, primary, Oliva, Eduardo, additional, Le, Thi Thu Thuy, additional, Sebban, Stéphane, additional, Fajardo, Marta, additional, Ros, David, additional, and Velarde, Pedro, additional

Published
2014
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85. Simulations of radiative shocks and jet formation in laboratory plasmas

Author

Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica, Velarde, Pedro, González, Matthias, Oliva, Eduardo, Kasperczuk, Andrzej, Pisarczyk, Tadeusz, Ullschmied, Jiri, Stehlé, Chantal, Rus, Bedrich, García Senz, Domingo, Bravo Guil, Eduardo, Relaño, Antonio, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica, Velarde, Pedro, González, Matthias, Oliva, Eduardo, Kasperczuk, Andrzej, Pisarczyk, Tadeusz, Ullschmied, Jiri, Stehlé, Chantal, Rus, Bedrich, García Senz, Domingo, Bravo Guil, Eduardo, and Relaño, Antonio

Abstract

We present the simulations of two relevant hydrodynamical problems related to astrophysical phenomena performed by three different codes. The numerical results from these codes will be compared in order to test both the numerical method implemented inside them and the influence of the physical phenomena simulated by the codes. Under some conditions laser produced plasmas could be scaled to the typical conditions prevailing in astrophysical plasmas. Therefore, such similarity allows to use existing laser facilities and numerical codes suitable to a laser plasma regime, for studying astrophysical proccesses. The codes are the radiation fluid dynamic 2D ARWEN code and the 3D HERACLES, and, without radiation energy transport, a Smoothed-Particle Hydrodynamics (SPH) code. These codes use diferent numerical techniques and have overlapping range of application, from laser produced plasmas to astrophysical plasmas. We also present the first laser experiments obtaining cumulative jets with a velocity higher than 100 km/s., Peer Reviewed, Postprint (published version)

Published
2007

92. Textos clásicos de literatura jurídica indiana. I

Author

Sánchez Bella, Ismael, Compilador, Fundación Histórica Tavera, Editor, Digibis, S.L., Productor, Alfaro, Francisco de, 1551-1644, Álvarez de Abreu, Antonio José, 1683-1756, Colón de Larreátegui, Félix, Díez de La Calle, Juan, 1599-1662, Escalona y Agüero, Gaspar de, 1590-1650, Ferau de Cassañas, Esteban, Hevia Bolaños, Juan de, Liñán y Cisneros, Melchor de, 1708, Mateu y Sanz, Lorenzo, 1618-1680, Montemayor y Córdoba de Cuenca, Juan Francisco, Muriel, Domingo, 1718-1795, Murillo Velarde, Pedro, 1696-1753, Parras, Pedro José, 1787, Pérez Landero y Castro, Pedro, Rezabal y Ugarte, José de, 1747-1800, Villarroel, Gaspar de, 1587-1665, Sánchez Bella, Ismael, Compilador, Fundación Histórica Tavera, Editor, Digibis, S.L., Productor, Alfaro, Francisco de, 1551-1644, Álvarez de Abreu, Antonio José, 1683-1756, Colón de Larreátegui, Félix, Díez de La Calle, Juan, 1599-1662, Escalona y Agüero, Gaspar de, 1590-1650, Ferau de Cassañas, Esteban, Hevia Bolaños, Juan de, Liñán y Cisneros, Melchor de, 1708, Mateu y Sanz, Lorenzo, 1618-1680, Montemayor y Córdoba de Cuenca, Juan Francisco, Muriel, Domingo, 1718-1795, Murillo Velarde, Pedro, 1696-1753, Parras, Pedro José, 1787, Pérez Landero y Castro, Pedro, Rezabal y Ugarte, José de, 1747-1800, and Villarroel, Gaspar de, 1587-1665

Abstract

Tipo de archivo: Texto, PC 486 ; 8 Mb de memoria RAM; MS-DOS 6.0 y Microsoft Windows 3.1 o superior; Espacio libre en disco superior a 10 Mb; Monitor VGA; Lector de CD-ROM, Tít. tomado de la etiqueta

Published
1999

93. Encefalitis de Rasmussen: Complejidad del manejo de una epilepsia potencialmente farmacorresistente ilustrada por dos casos clínicos.

Author

Carmona-Vázquez, Carlos Raúl, Peña-Landín, Dora Maricela, Venzor-Castellanos, Juan Pablo, Pasquel García Velarde, Pedro Mario, and Dávila-Gutiérrez, Guillermo

Subjects
CHRONIC encephalitis, TREATMENT of epilepsy, DRUG resistance, CHILDHOOD epilepsy, DISEASE management, IMMUNOGLOBULINS, IMMUNOSUPPRESSION, PATHOLOGICAL physiology
Abstract

Copyright of Revista Mexicana de Neurociencia is the property of Academia Mexicana de Neurologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014

94. Plasmocitoma dural como primera manifestación de mieloma múltiple. Informe de cuatro casos y revisión bibliográfica.

Author

Vicuña-González, Rosa María, Rivera-Salgado, María Irene, Pasquel-García-Velarde, Pedro Mario, and Grube-Pagola, Peter

Subjects
PLASMACYTOMA, MULTIPLE myeloma diagnosis, MENINGES, BRAIN tumors, PLASMA cells, LYMPHOCYTES, MEDICAL literature reviews
Abstract

Copyright of Patologia Revista Latinoamericana is the property of Asociacion Latinoamericana de Patologia/Asociacion Mexicana de Patologia/Consejo Mexicano de Medicos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2013

100. Observaciones al manifiesto de D. José María Puente ex-gefe [sic] político de Galicia por lo que contiene de injurioso al cabildo de la S.A.M.I. de Santiago / [Francisco Xavier de Estanga, Rufino Antonio de Alegria, Pedro Velarde]

Author

Estanga, Francisco Xavier de, fl. 1822, Alegria, Rufino Antonio, Velarde, Pedro, Puente, José María, and Moldes, Juan Bautista, fl. 1817-1846

Subjects
Goberno, Ideas políticas, Política, 1814-1833, Galicia, Historia
Abstract

42 p. ; 20 cm

Published
1821

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