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Search Results: 1 - 10 of 219634 matches for " L. del Peral "
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Antonio María Antonozi, ingeniero de las comedias del Buen Retiro (1657-1662). Nuevos datos para la biografía de un inventor de ‘maravillosas apariencias’
Sánchez del Peral y López, Juan Ramón
Archivo Espa?ol de Arte , 2007,
Abstract: The author attempts to cover the documentary lacuna, which until now constituted the biography of the Italian scenographer Antonio María Antonozi, a forgotten figure in Spanish historiography, in spite of having played an important role directing comedies in the Real Sitio del Buen Retiro (Madrid) during the final years of the reign of Felipe IV. Likewise, an attempt is made to clarify certain basic questions heretofore incorrectly proposed, but explained in this article, concerning the participation of Court painters in the elaboration of theatrical scenography. El presente artículo pretende cubrir la laguna documental que hasta hoy constituía la biografía del escenógrafo italiano Antonio María Antonozi, figura relegada al olvido en la historiografía espa ola, a pesar de que jugó un importante papel en la dirección de las comedias del Real Sitio del Buen Retiro, en Madrid, en los a os finales del reinado de Felipe IV. Al mismo tiempo, se ha pretendido precisar algunas cuestiones de fondo erróneamente planteadas hasta ahora y esclarecidas en el presente artículo sobre la participación de los pintores de corte en las puestas en escena teatrales.
Study of charge behavior during solar particle acceleration
J. Pérez Peraza,G. Balderas Aviles,D. Rodríguez Frías,L. del Peral
Geofísica internacional , 2008,
Abstract: In order to explain the evolution with energy of the charge state of solar par-ticles we have developed a model where charge states are defined at the source during the particle acceleration process. Charge-interchange processes between the accelerated ions and local matter are considered on basis of electron loss and capture cross-sections at high energies. The model is worked out under two different approaches. We apply the model to observational data of charge states of most of particle events published in the literature. We discuss our results and implications within the frame of other existing models: we conclude that our analyticaldeveloped by other authors.
The Atmospheric Monitoring System of the JEM-EUSO Space Mission
M. D. Rodriguez Frias,S. Toscano,E. Bozzo,L. del Peral,A. Neronov,S. Wada
Physics , 2015, DOI: 10.1051/epjconf/20158902007
Abstract: An Atmospheric Monitoring System (AMS) is a mandatory and key device of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR) and Extremely-High Energy Cosmic Rays (EHECR) from Space. JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. Our AMS consists of a very challenging space infrared camera and a LIDAR device, that are being fully designed with space qualification to fulfil the scientific requirements of this space mission. The AMS will provide information of the cloud cover in the FoV of JEM-EUSO, as well as measurements of the cloud top altitudes with an accuracy of 500 m and the optical depth profile of the atmosphere transmittance in the direction of each air shower with an accuracy of 0.15 degree and a resolution of 500 m. This will ensure that the energy of the primary UHECR and the depth of maximum development of the EAS ( Extensive Air Shower) are measured with an accuracy better than 30\% primary energy and 120 $g/cm^2$ depth of maximum development for EAS occurring either in clear sky or with the EAS depth of maximum development above optically thick cloud layers. Moreover a very novel radiometric retrieval technique considering the LIDAR shots as calibration points, that seems to be the most promising retrieval algorithm is under development to infer the Cloud Top Height (CTH) of all kind of clouds, thick and thin clouds in the FoV of the JEM-EUSO space telescope.
Reflexiones en torno a la sensibilización de medios de comunicación sobre el estigma de la enfermedad mental
Mena Jiménez,Angel Luis; Bono del Trigo,águila; López Pardo,Andrés; Díaz del Peral,Domingo;
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2010, DOI: 10.4321/S0211-57352010000400004
Abstract: different international strategies and actions to tackle stigma are reviewed. from the experience of the andalusian strategy "1 in 4", which started in 2005, the authors state several aspects which should be taken into account when working to improve the social image of the mental illness that appears in the media.
Reflexiones en torno a la sensibilización de medios de comunicación sobre el estigma de la enfermedad mental.
ángel Luis Mena Jiménez,águila Bono del Trigo,Andrés López Pardo,Domingo Díaz del Peral
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2010,
Abstract: Se revisan las acciones que se llevan a cabo para sensibilizar a los medios en diversas estrategias internacionales contra el estigma. De la experiencia de la estrategia contra el estigma de Andalucía “1 de cada 4”, iniciada en 2005, se exponen una serie de aspectos que deberían considerarse cuando se trabaja para mejorar la imagen de la enfermedad mental que se proyecta en los medios de comunicación.
A new surface parameter for composition studies at high energies
G. Ros,A. D. Supanitsky,G. A. Medina-Tanco,L. del Peral,M. D. Rodriguez-Frias
Physics , 2009,
Abstract: A new family of parameters intended for composition studies is presented. They make exclusive use of surface data combining the information from the total signal at each triggered detector and the array geometry. We perform an analytical study of these composition estimators in order to assess their reliability, stability and possible optimization. The influence of the different slopes of the proton and Iron lateral distribution function on the discrimination power of the estimators is also studied. Additionally, the stability of the parameter in face of a possible underestimation of the size of the muon component by the shower simulation codes, as it is suggested by experimental evidence, is also studied.
Improving photon-hadron discrimination based on cosmic ray surface detector data
G. Ros,A. D. Supanitsky,G. A. Medina-Tanco,L. del Peral,M. D. Rodriguez-Frias
Physics , 2013, DOI: 10.1016/j.astropartphys.2013.05.014
Abstract: The search for photons at EeV energies and beyond has considerable astrophysical interest and will remain one of the key challenges for ultra-high energy cosmic ray (UHECR) observatories in the near future. Several upper limits to the photon flux have been established since no photon has been unambiguously observed up to now. An improvement in the reconstruction efficiency of the photon showers and/or better discrimination tools are needed to improve these limits apart from an increase in statistics. Following this direction, we analyze in this work the ability of the surface parameter Sb, originally proposed for hadron discrimination, for photon search. Semi-analytical and numerical studies are performed in order to optimize Sb for the discrimination of photons from a proton background in the energy range from 10^18.5 to 10^19.6 eV. Although not shown explicitly, the same analysis has been performed for Fe nuclei and the corresponding results are discussed when appropriate. The effects of different array geometries and the underestimation of the muon component in the shower simulations are analyzed, as well as the Sb dependence on primary energy and zenith angle.
Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays
G. Ros,G. A. Medina-Tanco,A. D. Supanitsky,L. del Peral,M. D. Rodríguez-Frías
Physics , 2015, DOI: 10.1016/j.astropartphys.2015.04.001
Abstract: The current methods to determine the primary energy of ultra-high energy cosmic rays (UHECRs) are different when dealing with hadron or photon primaries. The current experiments combine two different techniques, an array of surface detectors and fluorescence telescopes. The latter allow an almost calorimetric measurement of the primary energy. Thus, hadron-initiated showers detected by both type of detectors are used to calibrate the energy estimator from the surface array (usually the interpolated signal at a certain distance from the shower core S(r0)) with the primary energy. On the other hand, this calibration is not feasible when searching for photon primaries since no high energy photon has been unambiguously detected so far. Therefore, pure Monte Carlo parametrizations are used instead. In this work, we present a new method to determine the primary energy of hadron-induced showers in a hybrid experiment based on a technique previously developed for photon primaries. It consists on a set of calibration curves that relate the surface energy estimator, S(r0), and the depth of maximum development of the shower, Xmax, obtained from the fluorescence telescopes. Then, the primary energy can be determined from pure surface information since S(r0) and the zenith angle of the incoming shower are only needed. Considering a mixed sample of ultra-high energy proton and iron primaries and taking into account the reconstruction uncertainties and shower to shower fluctuations, we demonstrate that the primary energy may be determined with a systematic uncertainty below 1% and resolution around 16% in the energy range from 10^{18.5} to 10^{19.6} eV. Several array geometries, the shape of the energy error distributions and the uncertainties due to the unknown composition of the primary flux have been analyzed as well.
Energy and Xmax reconstruction of hadron-initiated showers in surface arrays
G. Ros,G. A. Medina-Tanco,A. D. Supanitsky,L. Del Peral,M. D. Rodriguez-Frias
Physics , 2011, DOI: 10.7529/ICRC2011/V02/1082
Abstract: The current methods to determine the primary energy in surface arrays are different when dealing with hadron or photon initiated showers. In this work, we adapt a method previously developed for photon-initiated showers to hadron primaries. We determine the Monte Carlo parametrizations that relate the surface energy estimator and the maximum of shower development for both, proton and Iron primaries. Using for each primary their own set of calibration curves, which is of course impossible in practice, we show that the energy could be inferred with a negligible bias and 12% resolution. However, we show that a mixed calibration could also be performed, including both type of primaries, such that the bias still remains low and the achieved resolution is around 15%. In addition, the method allows the simultaneous determination of Xmax in pure surface arrays with resolution better than 7%.
Aportaciones al Estudio del Gremio de Cuchilleros
Martinez del Peral Forton, Rafael
Gladius , 1986, DOI: 10.3989/gladius.1986.119
Abstract: No disponible.
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