Search results for " naturale"
showing 10 items of 438 documents
Performance of jet substructure techniques for large-$R$ jets in proton-proton collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector
2013
This paper presents the application of a variety of techniques to study jet substructure. The performance of various modified jet algorithms, or jet grooming techniques, for several jet types and event topologies is investigated for jets with transverse momentum larger than 300 GeV. Properties of jets subjected to the mass-drop filtering, trimming, and pruning algorithms are found to have a reduced sensitivity to multiple proton-proton interactions, are more stable at high luminosity and improve the physics potential of searches for heavy boosted objects. Studies of the expected discrimination power of jet mass and jet substructure observables in searches for new physics are also presented.…
Cerebral Dynamics during the Observation of Point-Light Displays Depicting Postural Adjustments
2017
Objective: As highly social creatures, human beings rely part of their skills of identifying, interpreting, and predicting the actions of others on the ability of perceiving biological motion. In the present study, we aim to investigate the electroencephalographic (EEG) cerebral dynamics involved in the coding of postural control and examine whether upright stance would be codified through the activation of the temporal-parietal cortical network classically enrolled in the coding of biological motion. Design: We registered the EEG activity of 12 volunteers while they passively watched point light displays (PLD) depicting quiet stable (QB) and an unstable (UB) postural situations and their r…
Cavanilles y las mordeduras de víbora
1996
El presente trabajo pretende recordar, en una visión retrospectiva, el tratamiento de las mordeduras de víbora según los escritos de A. J. Cavanilles, de gran vigencia entre 1793 y 1802. Se citan los polvos vegetales integrantes de la mezcla utilizada para el tratamiento, la recolección de los mismos y la dosis a administrar del preparado al uso de la época, especialmente, en tierras de Els Ports y de La Foia de Castalla.
Scalable Creation of Long-Lived Multipartite Entanglement.
2017
We demonstrate the deterministic generation of multipartite entanglement based on scalable methods. Four qubits are encoded in Ca+40, stored in a microstructured segmented Paul trap. These qubits are sequentially entangled by laser-driven pairwise gate operations. Between these, the qubit register is dynamically reconfigured via ion shuttling operations, where ion crystals are separated and merged, and ions are moved in and out of a fixed laser interaction zone. A sequence consisting of three pairwise entangling gates yields a four-ion Greenberger-Horne-Zeilinger state |ψ=(1/2)(|0000+|1111), and full quantum state tomography reveals a state fidelity of 94.4(3)%. We analyze the decoherence o…
Encriptación óptica empleando llaves Weierstrass-Mandelbrot
2013
[EN] This paper presents the generation of encryption keys using the local oscillating properties of the partial sums of Weierstrass-Mandelbrot fractal function. In this way, the security key can be replicated if the parameters used to obtain it are known. Therefore, these parameters can be sent instead of sending the key. This procedure reduces the amount of information to be sent and prevents possible interception of the key. Moreover, the key can not be affected by data loss or pollution. The effectiveness of the Weierstrass-Mandelbrot keys were demonstrated by computer simulation in a 4f optical encryption system and the double random phase encoding technique. These keys allow us to enc…
Estudio de la dinámica poblacional del lepidóptero Thaumetopoea pityocampa (Denis & Schiffermüller, 1775) en la provincia de Valencia.
2014
Se estudió la dinámica poblacional de Thaumetopoea pityocampa (Denis & Schiffermüller, 1775) (Lepidoptera; Notodontidae) en cinco áreas de pinar ubicadas en el norte de la provincia de Valencia (España): Loma Valluenga (Rincón de Ademuz), Los Ances, La Jarilla y Las Umbrías (Los Serranos) y Pla de l’Albercoquer-Corral de Pija (Camp de Túria); la primera y última de estas masas forestales son de origen natural y regeneración espontánea, mientras que el resto son repoblaciones de origen artificial. Además, a excepción de Pla de l’Albercoquer-Corral de Pija con masas de Pinus halepensis Mill., el resto de áreas albergaron principalmente pinares de la especie Pinus nigra salzmanni Arnold. La ma…
Evolution of small-scale magnetic elements in the vicinity of granular-size swirl convective motions
2014
Advances in solar instrumentation have led to a widespread usage of time series to study the dynamics of solar features, specially at small spatial scales and at very fast cadences. Physical processes at such scales are determinant as building blocks for many others occurring from the lower to the upper layers of the solar atmosphere and beyond, ultimately for understanding the bigger picture of solar activity. Ground-based (SST) and space-borne (Hinode) high-resolution solar data are analyzed in a quiet Sun region displaying negative polarity small-scale magnetic concentrations and a cluster of bright points observed in G-band and Ca II H images. The studied region is characterized by the …
Pressure of the hot gas in simulations of galaxy clusters
2016
We analyze the radial pressure profiles, the ICM clumping factor and the Sunyaev-Zel'dovich (SZ) scaling relations of a sample of simulated galaxy clusters and groups identified in a set of hydrodynamical simulations based on an updated version of the TreePM-SPH GADGET-3 code. Three different sets of simulations are performed: the first assumes non-radiative physics, the others include, among other processes, AGN and/or stellar feedback. Our results are analyzed as a function of redshift, ICM physics, cluster mass and cluster cool-coreness or dynamical state. In general, the mean pressure profiles obtained for our sample of groups and clusters show a good agreement with X-ray and SZ observa…
La cultura : Nuevos territorios, nuevos usos
1998
Podría trartarse de un artículo escrito para ser publicado en "Larousse Enciclopedia" en una edición de 1998-1999. Se desconoce si finalmente se incluyó en esta u otra publicación. Una versión actualizada del artículo se recoge en: Contrastes, nº 45, pp. 15-23. Valencia, Julio-Septiembre 2006.