cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
L’atmosfera plumbea delle subnane
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2013

Le subnane calde rappresentano un gruppo di stelle di piccola massa povere d'idrogeno e ricche d'elio. Uno studio in corso di pubblicazione su MNRAS descrive la scoperta di due di questi oggetti celesti che mostrano un'altissima concentrazione di piombo nelle loro atmosfere.
Radiation from sub-Larmor scale magnetic fields
Creators: name: Medvedev, Mikhail V.
name: Frederiksen, Jacob Trier
name: Haugboelle, Troels
name: Nordlund, Aake
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Spontaneous rapid growth of strong magnetic fields is rather ubiquitous in high-energy density environments ranging from astrophysical sources (e.g., gamma-ray bursts and relativistic shocks), to reconnection, to laser-plasma interaction laboratory experiments, where they are produced by kinetic streaming instabilities of the Weibel type. Relativistic electrons propagating through these sub-Larmor-scale magnetic fields radiate in the jitter regime, in which the anisotropy of the magnetic fields and the particle distribution have a strong effect on the produced radiation. Here we develop the general theory of jitter radiation, which includes (i) anisotropic magnetic fields and electron velocity distributions, (ii) the effects of trapped electrons and (iii) extends the description to large deflection angles of radiating particles thus establishing a cross-over between the classical jitter and synchrotron regimes. Our results are in remarkable agreement with the radiation spectra obtained from particle-in-cell simulations of the classical Weibel instability. Particularly interesting is the onset of the field growth, when the transient hard synchrotron-violating spectra are common as a result of the dominant role of the trapped population. This effect can serve as a distinct observational signature of the violent field growth in astrophysical sources and lab experiments. It is also interesting that a system with small-scale fields tends to evolve toward the small-angle jitter regime, which can, under certain conditions, dominate the overall emission of a source.
description: 13 pages, 12 figures, matches published version
The emergence of gravity as a retro-causal post-inflation macro-quantum-coherent holographic vacuum Higgs-Goldstone field
Creators: name: Sarfatti, Jack
name: Levit, Creon
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We present a model for the origin of gravity, dark energy and dark matter: Dark energy and dark matter are residual pre-inflation false vacuum random zero point energy (w=-1) of large-scale negative, and short-scale positive pressure, respectively, corresponding to the "zero point" (incoherent) component of a superfluid (supersolid) ground state. Gravity, in contrast, arises from the 2nd order topological defects in the post-inflation virtual "condensate" (coherent) component. We predict, as a consequence, that the LHC will never detect exotic real on-mass-shell particles that can explain dark matter. We also point out that the future holographic dark energy de Sitter horizon is a total absorber (in the sense of retro-causal Wheeler-Feynman action-at-a-distance electrodynamics) because it is an infinite redshift surface for static detectors. Therefore, the advanced Hawking-Unruh thermal radiation from the future de Sitter horizon is a candidate for the negative pressure dark vacuum energy.
description: 8 pages, no figures. To appear in Proc. DICE2008 From Quantum Mechanics through Complexity to Spacetime: the role of emergent dynamical structures. Castello Pasquini/Castiglioncello (Tuscany), September 22-26, 2008
Streamwise oscillation of spanwise velocity at the wall of a channel for turbulent drag reduction
Creators: name: Viotti, Claudio
name: Quadrio, Maurizio
name: Luchini, Paolo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Steady forcing at the wall of a channel flow is studied via DNS to assess its ability of yielding reductions of turbulent friction drag. The wall forcing consists of a stationary distribution of spanwise velocity that alternates in the streamwise direction. The idea behind the forcing builds upon the existing technique of the spanwise wall oscillation, and exploits the convective nature of the flow to achieve an unsteady interaction with turbulence. The analysis takes advantage of the equivalent laminar flow, that is solved analytically to show that the energetic cost of the forcing is unaffected by turbulence. In a turbulent flow, the alternate forcing is found to behave similarly to the oscillating wall; in particular an optimal wavelength is found that yields a maximal reduction of turbulent drag. The energetic performance is significantly improved, with more than 50% of maximum friction saving at large intensities of the forcing, and a net energetic saving of 23% for smaller intensities. Such a steady, wall-based forcing may pave the way to passively interacting with the turbulent flow to achieve drag reduction through a suitable distribution of roughness, designed to excite a selected streamwise wavelength.
On Cohomological Decomposition of Almost-Complex Manifolds and Deformations
Creators: name: Angella, Daniele
name: Tomassini, Adriano
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C55, 53C25, 32G05

description: While small deformations of Kähler manifolds are Kähler too, we prove that the cohomological property to be $\mathcal{C}^\infty$-pure-and-full is not a stable condition under small deformations. This property, that has been recently introduced and studied by T.-J. Li and W. Zhang in [Comparing tamed and compatible symplectic cones and cohomological properties of almost complex manifolds, Comm. Anal. Geom.] and T. Drǎghici, T.-J. Li, and W. Zhang in [Symplectic forms and cohomology decomposition of almost complex four-manifolds, Int. Math. Res. Not.], [On the J-anti-invariant cohomology of almost complex 4-manifolds, to appear in Q. J. Math.], is weaker than the Kähler one and characterizes the almost-complex structures that induce a decomposition in cohomology. We also study the stability of this property along curves of almost-complex structures constructed starting from the harmonic representatives in special cohomology classes.
description: 20 pages
title: ÐÐ²ÑÐ¾Ð½Ð¾Ð¼Ð½Ð°Ñ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð°Ñ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ° Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 1.6ÐÐÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐµÐ´Ð²ÐµÐ´ÐµÐ², ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: ÐÐ°ÑÐ¾Ð³Ð°Ð·Ð¾Ð²ÑÐµ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸
ÐÐ¾ÑÐ»Ñ-ÑÑÐ¸Ð»Ð¸Ð·Ð°ÑÐ¾ÑÑ
Ð¢ÑÑÐ±Ð¾Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÑ
ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ°

description: Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð²Ð¾Ð¿ÑÐ¾ÑÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð²ÑÑÐ¾ÐºÐ¾ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÑÑÐ°Ð½Ð¾Ð²Ð¾Ðº â ÐÐÐ£ Ð½Ð° Ð±Ð°Ð·Ðµ ÐºÐ¾Ð½Ð²ÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¾Ð´Ð½Ð¾Ð²Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. Ð¢Ð°Ðº Ð¶Ðµ Ð² ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¸ÑÑÑÑÑÐ²ÑÐµÑ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐµÑ Ð´ÐµÑÐ°Ð»ÐµÐ¹ ÐÐ¢Ð£.
Media INAF non va in vacanza
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2013

Una sola newsletter alla settimana, il venerdì. E una selezione estiva ragionata per rivedere insieme, giorno per giorno, i video più suggestivi andati in onda sul nostro canale YouTube. Queste le variazioni previste per il mese di agosto. Sugli app-store le applicazioni per seguire news ed eventi dovunque voi siate
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸Ð½ÑÐµÑÑÐµÑÐ° Ð´Ð»Ñ Ð´Ð¾Ð¼Ð° Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð°
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: Ð¤ÐµÐºÐ»Ð¸ÑÐµÐ²Ð°, ÐÐ»Ð¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: ÐÐ¸Ð»ÑÐµ Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ñ
ÐÐ°ÑÐ¸Ð½Ð½Ð°Ñ Ð³ÑÐ°ÑÐ¸ÐºÐ°
ÐÐ°ÑÐºÐ°ÑÑ (ÑÑÑÐ¾Ð¸Ñ.)
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Ð¼Ð¾Ð´ÑÐ»ÑÐ½ÑÐµ Ð´Ð¾Ð¼Ð°

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾-Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½Ð¾Ð¹ ÑÑÐµÐ´Ñ Ð¶Ð¸Ð»Ð¾Ð³Ð¾ Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ñ. ÐÑÐµÐ´Ð¼ÐµÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ - Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¶Ð¸Ð»Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²Ð° Ð¸ Ð¸Ð½ÑÐµÑÑÐµÑÐ° Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ñ Ñ ÑÑÐµÑÐ¾Ð¼ Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸. Ð¦ÐµÐ»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ð¸ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ Ð´Ð¾Ð¼Ð¾Ð² Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¸Ð½ÑÐµÑÑÐµÑÐ° Ñ ÑÑÐµÑÐ¾Ð¼ Ð²ÑÑÐ²Ð»ÐµÐ½Ð½ÑÑ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»Ð¾ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐ½ÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð² Ð¸ Ð¸Ð½ÑÐµÑÐ½ÐµÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð². Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð², Ð¿ÑÐ¾ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¸Ð½ÑÐµÑÑÐµÑÐ° Ð´Ð»Ñ Ð´Ð¾Ð¼Ð¾Ð² Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾-ÐºÐ¾Ð½ÑÐµÐ¹Ð½ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð°. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ ÑÐ°ÐºÐ¸Ðµ Ð°ÑÑÐ¸Ð±ÑÑÑ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹, ÐºÐ°Ðº: Ð±ÑÑÑÑÐ¾Ð²Ð¾Ð·Ð²Ð¾Ð´Ð¸Ð¼Ð¾ÑÑÑ, Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾ÑÑÑ, ÑÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ Ð´Ð¾ÑÑÑÐ¿Ð½Ð¾ÑÑÑ, ÑÐºÐ¾Ð»Ð¾Ð³Ð¸ÑÐ½Ð¾ÑÑÑ, Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ Ð¸Ð½ÑÐµÑÑÐµÑÐ° Ð¾Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸. Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð°Ð¿ÑÐ¾Ð±Ð°ÑÐ¸Ð¸ Ð±ÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐ¹ Ð¸Ð½ÑÐµÑÑÐµÑ Ð´Ð»Ñ Ð´Ð¾Ð¼Ð° Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð°.
Fa caldo sui pianeti della zona abitabile
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2013

Il riscaldamento globale avviene anche in altri pianeti del Sistema solare, che starebbero subendo un aumento della temperatura. Grazie a nuovi modelli computerizzati, un'equipe di ricercatori ha trovato una soglia di radiazione termica inferiore rispetto a quanto pensato in precedenza. Questo porterebbe a rimodulare i calcoli sulla fascia di abitabilità.
title: ÐÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾-Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°Ð´Ð¸Ð¾ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÑÐ¿ÐµÐºÑÑÐ° Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ°Ð±Ð¾ÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð² Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð²
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÑÐºÐ¾Ð², ÐÐ²Ð³ÐµÐ½Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: ÑÐ°Ð´Ð¸Ð¾ÑÐ°ÑÑÐ¾ÑÐ½ÑÐ¹ ÑÐ¿ÐµÐºÑÑ
Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¿ÐµÐºÑÑÐ°
Ð±Ð°Ð½Ðº ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÐ¸Ð»ÑÑÑÐ¾Ð²
ÑÐ°Ð´Ð¸Ð¾Ð»Ð¾ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÐ°Ð½ÑÐ¸Ñ
Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ½ÑÐµ ÑÐ¸Ð³Ð½Ð°Ð»Ñ

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾-Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°Ð´Ð¸Ð¾ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÑÐ¿ÐµÐºÑÑÐ° Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ°Ð±Ð¾ÑÑ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ½ÑÑ Ð ÐÐ¡. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð° Ð¼Ð¾Ð´ÐµÐ»Ñ Ð² MATLAB, Ð¸Ð¼Ð¸ÑÐ¸ÑÑÑÑÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ Ð½ÐµÑÐºÐ¾Ð»ÑÐºÐ¸Ñ Ð ÐÐ¡ Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐ¼Ð¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ°Ð¼Ð¸ Ð¸ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ°Ñ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¿ÐµÐºÑÑÐ° ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¾Ñ Ð´Ð°Ð½Ð½ÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð². Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð¿ÑÐ¸Ð¼ÐµÑÐ° Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐµÑ Ð ÐÐ¡ Ð² ÑÐ°Ð·Ð½ÑÑ ÑÐ¾ÑÐºÐ°Ñ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²Ð°, Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð³ÑÐ°ÑÐ¸ÐºÐ¸ Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÐ±Ð¾ÑÐºÐ¸ Ð¸ ÑÐ¿ÐµÐºÑÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð°.
GDI Deliverable D6.1: Draft data management policy published including ELSI best practice
Creators: name: Campos, Dilza
Publisher: name: Zenodo
Year: 2023

description: Defining the data management policy is an important step to ensure genomic data in GDI is protected from unauthorised access, use, or disclosure, and that it complies to local legal and regulatory requirements. This is the draft version of the data management policy and it will evolve as the discussions around data governance, ELSI requirements and data management plans are taken into account in WP6 and in GDI as a whole. This report describes the main elements of the data management plan that need to be taken into account and as such this should be used as a guide for each node in GDI. Over time, we will describe good common practices for each of these elements, and individual nodes will be able to add any deviations from these common practices to represent the way data management is actually performed. We plan to collect information using an instance of the Data Stewardship Wizard that will be deployed with a GDI-specific knowledge model that will be continuously updated to encode the common practices, provide integrations to more in depth information, and will have filled questionnaires for each node to document their choices.
description: GDI project receives funding from the European Union's Digital Europe Programme under grant agreement number 101081813.
title: Ð¡Ð¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð±Ð°Ð·Ñ Ð´Ð°Ð½Ð½ÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð³ÑÐ°ÑÐ¾Ð²Ð¾Ð¹ Ð¡Ð£ÐÐ Neo4j
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾ÑÐ±Ð°ÑÐ¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: Ð¸ÐµÑÐ°ÑÑ Ð¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ
ÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð´Ð°Ð½Ð½ÑÑ
Ð³ÑÐ°ÑÐ¾Ð²Ð°Ñ Ð±Ð°Ð·Ð°

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÐµÑÑÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ðµ ÑÐµÑÐ²Ð¸ÑÐ° Ð¾ÑÐµÐ½Ð¸Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð¸ Ð¿ÑÐ¾Ð²ÐµÑÑÑÑÐµÐ³Ð¾ Ð¿Ð»Ð°Ð³Ð¸Ð½Ð° Ð´Ð»Ñ Ð½ÐµÐ³Ð¾. ÐÑÐ¾Ð²ÐµÑÑÑÑÐ¸Ð¹ Ð¿Ð»Ð°Ð³Ð¸Ð½ ÑÐµÑÐ°ÐµÑ Ð·Ð°Ð´Ð°ÑÑ ÑÐµÐ¼Ð°Ð½ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ð´Ð²ÑÑ Ð½ÐµÐ±Ð¾Ð»ÑÑÐ¸Ñ ÑÐµÐºÑÑÐ¾Ð² - Ð¾ÑÐ²ÐµÑÐ¾Ð² Ð¿ÑÐ¾Ð²ÐµÑÑÑÑÐµÐ³Ð¾ Ð¸ Ð¿ÑÐ¾Ð²ÐµÑÑÐµÐ¼Ð¾Ð³Ð¾. Ð¢Ð°ÐºÐ¶Ðµ Ð² Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð²ÑÐ²Ð¾Ð´Ñ Ð¿Ð¾ ÑÐ»ÑÑÑÐµÐ½Ð¸Ñ ÑÐ°Ð±Ð¾ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ.
La banca dati della Via Lattea
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2013

Sono stati resi disponibili al pubblico i dati spettroscopici della Sloan Digital Survey (SDSS - III) che contengono  nuovi i risultati del progetto APOGEE  pari a circa 100.000 spettri di stelle giganti rosse  della nostra galassia. La SDSS - III si aggiunge alle due precedenti formando una banca dati enorme sulla nostra galassia e sulla struttura a grande scala extra-galattica. Tra i protagonisti della survey extra-galattica spettroscopica (BOSS) di quasar anche due italiani, Matteo Viel e Stefano Cristiani dell'INAF - Osservatorio Astronomico di Trieste.
Additional file 1 of Machine-learning screening of luminogens with aggregation-induced emission characteristics for fluorescence imaging
Creators: name: Zhang, Yibin
name: Fan, Miaozhuang
name: Xu, Zhourui
name: Jiang, Yihang
name: Ding, Huijun
name: Li, Zhengzheng
name: Shu, Kaixin
name: Zhao, Mingyan
name: Feng, Gang
name: Yong, Ken-Tye
name: Dong, Biqin
name: Zhu, Wei
name: Xu, Gaixia
Publisher: name: figshare
Year: 2023
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Scheme S1. The synthetic route to prepare PTMM, TTNA, and TTBI. Figure S1 1 H NMR spectrum of PM. Figure S2 1 H NMR spectrum of PTMM. Figure S3 13 C NMR spectrum of PTMM. Figure S4. LC-MS spectrum of PTMM. Figure S5 1 H NMR spectrum of TTA. Figure S6 1 H NMR spectrum of TTNA. Figure S7 13 C NMR spectrum of TTNA. Figure S8. MALDI-TOF-MS spectrum of TTNA. Figure S9 1 H NMR spectrum of TTBI. Figure S10. 13 C NMR spectrum of TTBI. Figure S11. LC-MS spectrum of TTBI. Figure S12. The absorption spectrum of AIEgens in different solvents. Figure S13. PL spectra of AIEgens of AIEgens with different water fractions. Table S1. Comparison of absorption and emission peak between experimental and ML predicted. Table S2. Particle size of AIEgens NPs. Table S3. Zeta potentials of AIEgens NPs. Figure S14. Calculated LUMO and HOMO of PTMM, TTNA, and TTBI. Figure S15. Z-stack images of phantom of PTMM NPs. Figure S16. Z-stack images of phantom of TTNA NPs. Figure S17. Z-stack images of phantom of TTBI NPs. Figure S18. Experimental and predicted data are compared using 10-fold cross-validation. Figure S19. ML prediction error distribution. Figure S20. Model scalability. Figure S21. Comparison of ML accuracy and TD-DFT. Figure S22. Illustration of 10-fold cross-validation.
Arrivano le Perseidi!
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2013

Puntuale come ogni estate, torna lo sciame meteorico delle Perseidi ad accendere il cielo notturno con il fenomeno delle ‘stelle cadenti’. La notte tra il 12 e il 13 agosto è previsto il massimo del fenomeno. I consigli per osservarlo al meglio.
On the Implication of Bell's Probability Distribution and Proposed Experiments of Quantum Measurement
Creators: name: Zhao, Hai-Long
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Physics (physics.gen-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the derivation of Bell's inequalities, probability distribution is supposed to be a function of only hidden variable. We point out that the true implication of the probability distribution of Bell's correlation function is the distribution of the joint measurement outcomes on the two sides. So it is a function of both hidden variable and settings. In this case, Bell's inequalities fail. Our further analysis shows that Bell's locality holds neither for dependent events nor for independent events. We think that the measurements of EPR pairs are dependent events, thus violation of Bell's inequalities cannot rule out the existence of local hidden variable. In order to explain the results of EPR-type experiments, we suppose that polarization entangled photon pair can be composed of two circularly or linearly polarized photons with correlated hidden variables, and a couple of experiments of quantum measurement are proposed. The first uses delayed measurement on one photon of the EPR pair to demonstrate directly whether measurement on the other could have any non-local influence on it. Then several experiments are suggested to reveal the components of polarization entangled photon pair. The last one uses successive polarization measurements on a pair of EPR photons to show that two photons with a same quantum state will behave in the same way under the same measuring condition.
description: 15 pages, 9 figures
title: ÐÐ½ÑÑÑÑÐ¼ÐµÐ½ÑÑ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð¼ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ðµ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÐ¸Ð½Ð´ÐµÑ Ð¡Ð¾ÑÑÂ»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: ÐÑÐ¸Ð¼Ð¾Ð²Ð°, ÐÐ»Ð¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÐ¹ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³
Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹
Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³
ÑÐµÐºÐ»Ð°Ð¼Ð°

description: Ð¦ÐµÐ»Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ â Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ¾Ð² Ð¸ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð¼ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ðµ. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð² Ð² ÐÐÐ Â«ÐÐ¸Ð½Ð´ÐµÑ Ð¡Ð¾ÑÑÂ» Ð±ÑÐ»Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ð°, ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð¼ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ðµ Ð¸ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ.
Laggiù al fondo della scala di Planck
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2013

Cosa ne è delle leggi della fisica quando consideriamo scale infinitesimali, quali per esempio quella dell’universo degli istanti iniziali? Ne parliamo con Fabio Scardigli, autore insieme a Petr Jizba di un articolo appena uscito su EPJ C.
Buchi neri affamati e super veloci
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2013

Un gruppo di ricercatori inglesi è riuscito a calcolare la velocità di rotazione di una galassia, a 500 milioni di anni luce dalla Terra, mentre stava inglobando grandi quantità di materiale proveniente dal disco di accrescimento della galassia circostante. Future osservazioni renderanno i dati più precisi.
Asterosismologia per esopianeti
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2013

Un team di ricercatori ha usato l'asterosimologia per determinare con maggiore accuratezza la massa di un esopianeta orbitante la stella HD 52265, dirimendo il dubbio se si trattasse veramente di un pianeta o piuttosto di una nana bruna. L'importanza dello studio ce lo spiega Ennio Poretti, asterosismologo dell'INAF - Osservatorio di Brera
Establishment and characterization of an iPSC line (UCLi023-A) derived from a Late-Onset Retinal Degeneration patient carrying a founder mutation in C1QTNF5.
Creators: name: Fernández, Ana Alonso-Carriazo
name: Ashley-Norman, Phoebe
name: Butt, Zaynab
name: Moosajee, Mariya
name: Carr, Amanda-Jayne Francis
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Model organisms
subject: Gene Expression
subject: Genetics & Genomics
subject: Developmental Biology
subject: Human Biology & Physiology
subject: Stem Cells

description: Late-Onset Retinal Degeneration (L-ORD) is a rare autosomal dominant macular disease, with most cases being caused by a founder mutation in C1QTNF5. Initial symptoms, which generally occur during or after the sixth decade, include abnormal dark adaptation and changes in peripheral vision. Over time, the build-up of sub-retinal pigment epithelium (RPE) deposits leads to macular atrophy and bilateral central vision loss1. Here, we describe the generation of a human induced pluripotent stem cell (iPSC) line from dermal fibroblasts of a 61-year-old L-ORD Caucasian male patient carrying the founder mutation (c.489C>G, p.Ser163Arg), using episomal reprogramming.
Groups not presentable by products
Creators: name: Kotschick, D.
name: Loeh, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: primary 20F65, secondary 57M07, 20E06, 20E34, 20E36

description: In this paper we study obstructions to presentability by products for finitely generated groups. Along the way we develop both the concept of acentral subgroups, and the relations between presentability by products on the one hand, and certain geometric and measure or orbit equivalence invariants of groups on the other. This leads to many new examples of groups not presentable by products, including all groups with infinitely many ends, the (outer) automorphism groups of free groups, Thompson's groups, and even some elementary amenable groups.
description: 25 pages, minor changes, to appear in Groups, Geometry, and Dynamics
title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ°Ð±Ð¾ÑÑ Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾Ð¹ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Ð¿ÑÐ¸ Ð¿ÐµÑÐµÑ Ð¾Ð´Ðµ Ð½Ð° Ð´Ð¾Ð¼ÐµÐ½Ð½ÑÑ ÑÑÑÑÐºÑÑÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: Ð Ð°Ð¼Ð±Ð¾Ð½ÐµÐ½, Ð¡ÐµÑÐ³ÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð°Ñ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ ÑÐµÑÑ
ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑÑ Ð´Ð¾Ð¼ÐµÐ½Ð°
ÐºÐ¾Ð¼Ð¼ÑÑÐ°ÑÐ¾ÑÑ
active directory
Ð¿ÑÐ¾ÐºÑÐ¸-ÑÐµÑÐ²ÐµÑ

description: ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐ°Ð±Ð¾ÑÐ° Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾Ð¹ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ ÑÑÐµÐ±Ð½Ð¾Ð³Ð¾ Ð·Ð°Ð²ÐµÐ´ÐµÐ½Ð¸Ñ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿ÑÐ¾ÐµÐºÑ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾Ð¹ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Ð¿ÑÑÐµÐ¼ Ð¿ÐµÑÐµÐ²Ð¾Ð´Ð° ÐµÐµ Ð½Ð° Ð´Ð¾Ð¼ÐµÐ½Ð½ÑÑ ÑÑÑÑÐºÑÑÑÑ. ÐÑÐ±ÑÐ°Ð½Ñ Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ Ð¸ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ñ, Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÐµ Ð´Ð»Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿ÑÐ¾ÐµÐºÑÐ°.
Mondo alieno a raggi X
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2013

Per la prima volta in assoluto, l’occultazione di una stella da parte di un pianeta al di fuori del Sistema solare è stata osservata in banda X. A rilevarla, i telescopi spaziali Chandra della NASA e XMM-Newton dell’ESA. Il mondo alieno è HD 189733b, già noto come l'esopianeta blu.
Density of States in the Magnetic Ground State of the Friedel-Anderson Impurity
Creators: name: Bergmann, Gerd
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By applying a magnetic field whose Zeeman energy exceeds the Kondo energy by an order of magnitude the ground state of the Friedel-Anderson impurity is a magnetic state. In recent years the author introduced the Friedel Artificially Inserted Resonance (FAIR) method to investigate impurity properties. Within this FAIR approach the magnetic ground state is derived. Its full excitation spectrum and the composition of the excitations is calculated and numerically evaluated. From the excitation spectrum the electron density of states is calculated. Majority and minority d-resonances are obtained. The width of the resonances is about twice as wide as the mean field theory predicts. This broadening is due to the fact that any change of the occupation of the d-state in one spin band changes the eigenstates in the opposite spin band and causes transitions in both spin bands. This broadening reduces the height of the resonance curve and therefore the density of states by a factor of two. This yields an intuitive understanding for a previous result of the FAIR approach that the critical value of the Coulomb interaction for the formation of a magnetic moment is twice as large as the mean field theory predicts.
Novel scaling limits for critical inhomogeneous random graphs
Creators: name: Bhamidi, Shankar
name: van der Hofstad, Remco
name: van Leeuwaarden, Johan S. H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We find scaling limits for the sizes of the largest components at criticality for rank-1 inhomogeneous random graphs with power-law degrees with power-law exponent τ. We investigate the case where $τ\in(3,4)$, so that the degrees have finite variance but infinite third moment. The sizes of the largest clusters, rescaled by $n^{-(τ-2)/(τ-1)}$, converge to hitting times of a "thinned" Lévy process, a special case of the general multiplicative coalescents studied by Aldous [Ann. Probab. 25 (1997) 812-854] and Aldous and Limic [Electron. J. Probab. 3 (1998) 1-59]. Our results should be contrasted to the case τ>4, so that the third moment is finite. There, instead, the sizes of the components rescaled by $n^{-2/3}$ converge to the excursion lengths of an inhomogeneous Brownian motion, as proved in Aldous [Ann. Probab. 25 (1997) 812-854] for the Erdős-Rényi random graph and extended to the present setting in Bhamidi, van der Hofstad and van Leeuwaarden [Electron. J. Probab. 15 (2010) 1682-1703] and Turova [(2009) Preprint].
description: Published in at http://dx.doi.org/10.1214/11-AOP680 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Gate-Tunable Two-Dimensional Superlattices in Graphene
Creators: name: Huber, Robin
name: Liu, Ming-Hao
name: Chen, Szu-Chao
name: Drienovsky, Martin
name: Sandner, Andreas
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Richter, Klaus
name: Weiss, Dieter
name: Eroms, Jonathan
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: ; graphene; gate-tunable; superlattice; satellite Dirac points; Hofstadter butterfly
subject: 530 Physik

description: We report an efficient technique to induce gatetunable two-dimensional superlattices in graphene by the combined action of a back gate and a few-layer graphene patterned bottom gate complementary to existing methods. The patterned gates in our approach can be easily fabricated and implemented in van der Waals stacking procedures, allowing flexible use of superlattices with arbitrary geometry. In transport measurements on a superlattice with a lattice constant a = 40 nm, well-pronounced satellite Dirac points and signatures of the Hofstadter butterfly including a nonmonotonic quantum Hall response are observed. Furthermore, the experimental results are accurately reproduced in transport simulations and show good agreement with features in the calculated band structure. Overall, we present a comprehensive picture of graphene-based superlattices, featuring a broad range of miniband effects, both in experiment and in theoretical modeling. The presented technique is suitable for studying more advanced geometries which are not accessible by other methods.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð¿Ð¾Ð¸ÑÐºÐ° Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¼Ð°ÑÐºÐµÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ° Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ»Ð°Ð±Ð¾Ð´ÐµÑÐµÑÐ¼Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÑÑÐµÐ´Ñ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐµÐ»ÐµÐºÐ°Ð¼ÐµÑÑ Ð¸ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ°Ð½ÐµÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: Ð¥Ð°Ð¹ÑÐ¸Ð½, Ð Ð¾Ð¼Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¡ÐºÐ°Ð½Ð¸ÑÑÑÑÐ¸Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
ÐÐµÐ½ÐµÑÐ°ÑÐ¾ÑÑ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÐµ
ÐÐ»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ
Ð Ð°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ðµ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²
ÐÐ²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°ÑÐ¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¾Ð±ÑÐµÐºÑÐ° Ð² Ð½ÐµÑÐµÑÐºÐ¾ Ð´ÐµÑÐµÑÐ¼Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÑÑÐµÐ´Ðµ, Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð¾ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¿Ð¾Ð»ÑÑÐ°ÐµÑÑÑ Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ°Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ñ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ°Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð¾Ð¿Ð¸ÑÐ°Ð½Ð° Ð»Ð°Ð·ÐµÑÐ½Ð°Ñ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ°, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼Ð°Ñ Ð² ÑÐ°Ð±Ð¾ÑÐµ, Ð¸ ÐµÐµ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð´Ð»Ñ ÑÐµÑÐµÐ½Ð¸Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð·Ð°Ð´Ð°ÑÐ¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð´ÐµÑÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð±ÑÐµÐºÑÐ¾Ð² Ð½Ð° Ð¸Ð·Ð¾Ð±ÑÐ°Ð¶ÐµÐ½Ð¸Ð¸, Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð½ÑÑ Ð´Ð»Ñ Ð¿Ð¾Ð¸ÑÐºÐ° Ð¼Ð°ÑÐºÐµÑÐ¾Ð². ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð²ÑÐ±Ð¾Ñ Ð²Ð¸Ð´Ð° Ð¼Ð°ÑÐºÐµÑÐ°, ÑÐ´Ð¾Ð²Ð»ÐµÑÐ²Ð¾ÑÑÑÑÐ¸Ð¹ ÑÑÐ»Ð¾Ð²Ð¸ÑÐ¼ ÑÑÐµÐ¼ÐºÐ¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½Ð° ÐºÐ°ÑÐµÑÑÐ²Ð¾ ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ñ Ð¼Ð°ÑÐºÐµÑÐ¾Ð² Ð² Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ñ ÑÐ°ÐºÑÑÑÐ° ÑÑÐµÐ¼ÐºÐ¸. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ, Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÐµÐµ Ð½Ð°ÑÐ¾Ð´Ð¸ÑÑ Ð¼Ð°ÑÐºÐµÑÐ½ÑÐ¹ Ð¾Ð±ÑÐµÐºÑ Ð½Ð° Ð¿Ð°Ð½Ð¾ÑÐ°Ð¼Ð½Ð¾Ð¼ Ð¸Ð·Ð¾Ð±ÑÐ°Ð¶ÐµÐ½Ð¸Ð¸, ÑÐ´ÐµÐ»Ð°Ð½Ð½Ð¾Ð¼ ÑÐºÐ°Ð½ÐµÑÐ¾Ð¼ Ð²Ð¾ Ð²ÑÐµÐ¼Ñ ÑÐºÐ°Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÑÑ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ ÑÑÐ¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ° Ð¿Ð¾ Ð·Ð°Ð³ÑÑÐ¶ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¾Ð±Ð»Ð°ÐºÑ ÑÐ¾ÑÐµÐº. ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ 3D-Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÑÐµÐ´Ñ Ð²Ð¾ÐºÑÑÐ³ ÑÐºÐ°Ð½ÐµÑÐ° Ð¸ Ð¾ÑÐ¾Ð±ÑÐ°Ð¶ÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¸ÑÐºÐ¾Ð¼Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ° Ð½Ð° Ð½ÐµÐ¹.
Comparison of mixed quantum states
Creators: name: Pang, Shengshi
name: Wu, Shengjun
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article, we study the problem of comparing mixed quantum states: given $n$ unknown mixed quantum states, can one determine whether they are identical or not with an unambiguous quantum measurement? We first study universal comparison of mixed quantum states, and prove that this task is generally impossible to accomplish. Then, we focus on unambiguous comparison of $n$ mixed quantum states arbitrarily chosen from a set of $k$ mixed quantum states. The condition for the existence of an unambiguous measurement operator which can produce a conclusive result when the unknown states are actually the same and the condition for the existence of an unambiguous measurement operator when the unknown states are actually different are studied independently. We derive a necessary and sufficient condition for the existence of the first measurement operator, and a necessary condition and two sufficient conditions for the second. Furthermore, we find that the sufficiency of the necessary condition for the second measurement operator has simple and interesting dependence on $n$ and $k$. At the end, a unified condition is obtained for the simultaneous existence of these two unambiguous measurement operators.
description: 9 pages
Gravity, terrore ad altissima quota
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2013

È in rete il trailer del nuovo film di Alfonso Cuarón. Thriller fantascientifico con generose dosi di realismo, mette in scena una passeggiata spaziale funestata dallo space debris. Sarà la pellicola d’apertura alla Mostra del Cinema di Venezia. Fra i protagonisti, due premi Oscar e lo Space shuttle.
Come un sogno di una notte di mezza estate
Creators: Livia Giacomini
Publisher: name: Media Inaf
Year: 2013

Iniziano i preparativi per le Perseidi, uno degli spettacoli del cielo dell'estate 2013, previsto tra il 12 e il 13 agosto. Ecco alcuni bellissimi video dello sciame ripreso gli scorsi anni e qualche preziosa indicazione per realizzare il proprio filmato in time lapse dell'evento astronomico.
TEACHING VOCABULARY STRATEGIES
Creators: name: Sadullayeva, Manzuna
Publisher: name: Zenodo
Year: 2025

description: Vocabulary acquisition is a cornerstone of language learning, serving as the foundation for effective communication and comprehension. This article explores diverse strategies for teaching vocabulary effectively, blending theoretical insights with practical methodologies. It emphasizes the importance of contextual learning, active engagement, and technology integration, supported by linguistic and pedagogical research. The discussion underscores the interplay between explicit instruction and incidental learning, advocating for a balanced approach tailored to learner needs. Ultimately, the article aims to equip educators with comprehensive tools to enhance vocabulary instruction in diverse educational settings.
High-energy Cosmic-Ray Positrons from Hidden-Gauge-Boson Dark Matter
Creators: name: Chen, Chuan-Ren
name: Takahashi, Fuminobu
name: Yanagida, T. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We provide a scenario in which a hidden U(1) gauge boson constitutes dark matter of the Universe and decays into the standard-model particles through a kinetic mixing with an $U(1)_{B-L}$ gauge boson. Interestingly, our model can naturally account for the steep rise in the positron fraction recently reported by PAMELA. Moreover, we find that due to the charge assignment of $U(1)_{B-L}$, only a small amount of antiprotons are produced in the decay, which is also consistent with the PAMELA and other observational data.
description: the version appeared in PLB
A Loiano col naso all’insu
Creators: Stefano Bardelli e Antonio De Blasi
Publisher: name: Media Inaf
Year: 2013

L'INAF - Osservatorio Astronomico di Bologna in collaborazione con l'associazione Sofos, continua a offrire ai più piccoli osservazioni del cielo e giochi didattici presso la struttura di Loiano. Un modo divertente ed educativo per trascorre qualche calda serata d'agosto
Retrieval Practice & Bloom’s Taxonomy: Do Students Need Fact Knowledge Before Higher Order Learning?
Creators: name: Agarwal, Pooja K.
Publisher: name: Open Science Framework
Year: 2019
Subjects: subject: psychology
subject: bloom's taxonomy
subject: cognitive psychology
subject: fact knowledge
subject: higher order learning
subject: talk
subject: testing effect
subject: education
subject: educational psychology
subject: retrieval practice

description: The development of students’ higher order learning is a critical component of education. For decades, educators and scientists have engaged in an ongoing debate about whether higher order learning can only be enhanced by building a base of factual knowledge (analogous to Bloom’s taxonomy) or whether higher order learning can be enhanced directly by engaging in complex questioning and materials. The relationship between fact learning and higher order learning is often speculated, but empirically unknown. In this study, middle school students and college students engaged in retrieval practice with fact questions, higher order questions, or a mix of question types to examine the optimal type of retrieval practice for enhancing higher order learning. In laboratory and K-12 settings, retrieval practice consistently increased delayed test performance, compared with rereading or no quizzes. Critically, higher order and mixed quizzes improved higher order test performance, but fact quizzes did not. Contrary to popular intuition about higher order learning and Bloom’s taxonomy, building a foundation of knowledge via fact-based retrieval practice may be less potent than engaging in higher order retrieval practice, a key finding for future research and classroom application.
Hard thermal loops, to quadratic order, in the background of a spatial 't Hooft loop
Creators: name: Hidaka, Yoshimasa
name: Pisarski, Robert D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the simplest hard thermal loops for a spatial 't Hooft loop in the deconfined phase of a SU(N) gauge theory. We expand to quadratic order about a constant background field A_0 = Q/g, where Q is a diagonal, color matrix and g is the gauge coupling constant. We analyze the problem in sufficient generality that the techniques developed can be applied to compute transport properties in a "semi"-Quark Gluon Plasma. Notably, computations are done using the double line notation at finite N. The quark self-energy is a Q-dependent thermal mass squared, of order g^2T^2, where T is the temperature, times the same hard thermal loop as at Q=0. The gluon self-energy involves two pieces: a Q-dependent Debye mass squared, of order g^2T^2, times the same hard thermal loop as for Q=0, plus a new hard thermal loop, of order g^2T^3, due to the color electric field generated by a spatial 't Hooft loop.
description: 52 pages, 10 figures; Eqs. (118), (137), and (158) have been corrected. We thank H. Nishimura and V. V. Skokov for pointing this out
Non-equilibrium ionization states in galaxy clusters
Creators: name: Prokhorov, Dmitry
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: X-ray imaging observatories have revealed hydrodynamic structures with linear scales ~ 10 kpc in clusters of galaxies, such as shock waves in the 1E0657-56 and A520 galaxy clusters and the hot plasma bubble in the MKW 3s cluster. The future X-ray observatory IXO will resolve for the first time the metal distribution in galaxy clusters at the these scales. Heating of plasmas by shocks and AGN activities can result in non-equilibrium ionization states of metal ions. We study the effect of the non-equilibrium ionization at linear scales <50 kpc in galaxy clusters. A condition for non-equilibrium ionization is derived by comparing the ionization time-scale with the age of hydrodynamic structures. Modeling of non-equilibrium ionization when the plasma temperature suddenly change is performed. An analysis of relaxation processes of the FeXXV and FeXXVI ions by means of eigenvectors of the transition matrix is given. We conclude that the non-equilibrium ionization of iron can occur in galaxy clusters if the baryonic overdensity delta is smaller than 11.0/tau, where tau<<1 is the ratio of the hydrodynamic structure age to the Hubble time. Our modeling indicates that the emissivity in the helium-like emission lines of iron increases as a result of deviation from the ionization equilibrium. A slow process of helium-like ionic fraction relaxation was analyzed. A new way to determine a shock velocity is proposed.
description: 6 pages, 6 figures, accepted for publication in Astronomy and Astrophysics
Dipolar Fermi gases in anisotropic traps
Creators: name: Lima, Aristeu R. P.
name: Pelster, Axel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The quest for quantum degenerate Fermi gases interacting through the anisotropic and long-range dipole-dipole interaction is an exciting and fast developing branch within the cold-atoms research program. Recent experimental progress in trapping, cooling, and controlling polar molecules with large electric dipole moments has, therefore, motivated much theoretical effort. In a recent letter, we have briefly discussed the application of a variational time-dependent Hartree-Fock approach to study theoretically both the static and the dynamic properties of such a system in a cylinder-symmetric harmonic trap. We focused on the hydrodynamic regime, where collisions assure the equilibrium locally. Here, we present a detailed theory, extended to encompass the general case of a harmonic trap geometry without any symmetry. After deriving the equations of motion for the gas, we explore their static solutions to investigate key properties like the aspect ratios in both real and momentum space as well as the stability diagram. We find that, despite the lack of symmetry of the trap, the momentum distribution remains cylinder symmetric. The equations of motion are then used to study the low-lying hydrodynamic excitations, where, apart from the quadrupole and monopole modes, also the radial quadrupole mode is investigated. Furthermore, we study the time-of-flight dynamics as it represents an important diagnostic tool for quantum gases. We find that the real-space aspect ratios are inverted during the expansion, while the one in momentum space becomes asymptotically unity. In addition, anisotropic features of the dipole-dipole interaction are discussed in detail. These results could be particularly useful for future investigations of strongly dipolar heteronuclear polar molecules deep in the quantum degenerate regime.
Cross-validated mixed-datatype bandwidth selection for nonparametric cumulative distribution/survivor functions
Creators: name: Li, Cong
name: Li, Hongjun
name: S. Racine, Jeffrey
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Plant Biology

description: We propose a computationally efficient data-driven least square cross-validation method to optimally select smoothing parameters for the nonparametric estimation of cumulative distribution/survivor functions. We allow for general multivariate covariates that can be continuous, discrete/ordered categorical or a mix of either. We provide asymptotic analysis, examine finite-sample properties through Monte Carlo simulation, and consider an illustration involving nonparametric copula modeling. We also demonstrate how the approach can also be used to construct a smooth Kolmogorov–Smirnov test that has a slightly better power profile than its nonsmooth counterpart.
Dark Energy and Emergent Spacetime
Creators: name: Yang, Hyun Seok
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A natural geometric framework of noncommutative spacetime is symplectic geometry rather than Riemannian geometry. The Darboux theorem in symplectic geometry then admits a novel form of the equivalence principle such that the electromagnetism in noncommutative spacetime can be regarded as a theory of gravity. Remarkably the emergent gravity reveals a noble picture about the origin of spacetime, dubbed as emergent spacetime, which is radically different from any previous physical theory all of which describe what happens in a given spacetime. In particular, the emergent gravity naturally explains the dynamical origin of flat spacetime, which is absent in Einstein gravity: A flat spacetime is not free gratis but a result of Planck energy condensation in a vacuum. This emergent spacetime picture, if it is correct anyway, turns out to be essential to resolve the cosmological constant problem, to understand the nature of dark energy and to explain why gravity is so weak compared to other forces.
description: 6 pages, A contribution for the Proceedings of the Workshop on Cosmology and Particle Astrophysics 2008, October 28 - November 1, APCTP, Korea
Onset of inertial magnetoconvection in rotating fluid spheres
Creators: name: Simitev, Radostin D.
name: Busse, Friedrich H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The onset of convection in the form of magneto-inertial waves in a rotating fluid sphere permeated by a constant axial electric current is studied through a perturbation analysis. Explicit expressions for the dependence of the Rayleigh number on the azimuthal wavenumber are derived in the limit of high thermal diffusivity. Results for the case of thermally infinitely conducting boundaries and for the case of nearly thermally insulating boundaries are obtained.
description: Changes to structure; several typos corrected; new figure included (Figure 2)
Galassia con Stella
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2013

L'immagine che ci propone il telescopio spaziale Hubble, scelta nel suo immenso archivio, ci offre l'immagine della galassia a spirale NGC 4517 sovrastata da una luminosa stella. Il gioco prospettico colto dal telescopio forma un quadro di indubitabile bellezza