cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Secluded U(1) below the weak scale
Creators: name: Pospelov, Maxim
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A secluded U(1) sector with weak admixture to photons, O(10^{-2}-10^{-3}), and the scale of the breaking below 1 GeV represents a natural yet poorly constrained extension of the Standard Model. We analyze g-2 of muons and electrons together with other precision QED data, as well as radiative decays of strange particles to constrain mass--mixing angle (m_V-κ) parameter space. We point out that m_V = 214 MeV and κ^2 > 3\times 10^{-5} can be consistent with the hypothesis of HyperCP collaboration, that seeks to explain the anomalous energy distribution of muon pairs in the Σ^+ \to p μ^+μ^- process by a resonance, without direct contradiction to the existing data on radiative kaon decays. The same parameters lead to O({\rm few} \times 10^{-9}) upward correction to the anomalous magnetic moment of the muon, possibly relaxing some tension between experimental value and theoretical determinations of g-2. The ultra-fine energy resolution scan of e^+e^-\to μ^+μ^- cross section and dedicated analysis of lepton spectra from K^+\to π^+ e^+e^- decays should be able to provide a conclusive test of this hypothesis and improve the constraints on the model.
description: 14 pages, 2 figures
Dynamics of opinion polarization
Creators: name: Biondi, E.
name: Boldrini, C.
name: Passarella, A.
name: Conti, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: For decades, researchers have been trying to understand how people form their opinions. This quest has become even more pressing with the widespread usage of online social networks and social media, which seem to amplify the already existing phenomenon of polarization. In this work, we study the problem of polarization assuming that opinions evolve according to the popular Friedkin-Johnsen (FJ) model. The FJ model is one of the few existing opinion dynamics models that has been validated on small/medium-sized social groups. First, we carry out a comprehensive survey of the FJ model in the literature (distinguishing its main variants) and of the many polarization metrics available, deriving an invariant relation among them. Secondly, we derive the conditions under which the FJ variants are able to induce opinion polarization in a social network, as a function of the social ties between the nodes and their individual susceptibility to the opinion of others. Thirdly, we discuss a methodology for finding concrete opinion vectors that are able to bring the network to a polarized state. Finally, our analytical results are applied to two real social network graphs, showing how our theoretical findings can be used to identify polarizing conditions under various configurations.
description: 12 pages, 1 figure; in IEEE Transactions on Systems, Man, and Cybernetics: Systems
title: ÐÑÐµÐ½ÐºÐ° ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ¸ÑÑÐµÐ¼ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¢ÑÐ¼Ð°Ð½Ð¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2016
Subjects: ÐÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÑ Ð¶Ð¸Ð·Ð½ÐµÐ´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÐµÐ»Ð¾Ð²ÐµÐºÐ°
Ð¡Ð¸Ð³Ð½Ð°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ
ÑÑÐµÐ·Ð²ÑÑÐ°Ð¹Ð½ÑÐµ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¸

description: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ðµ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ - Ð¾Ð´Ð¸Ð½ Ð¸Ð· Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÑÑÐ¸Ñ ÑÐ°ÐºÑÐ¾ÑÐ¾Ð², ÑÐ¿Ð¾ÑÐ¾Ð±Ð½ÑÑ ÑÐ¾ÐºÑÐ°ÑÐ¸ÑÑ Ð¿Ð¾ÑÐµÑÐ¸ Ð¸ ÑÐ±ÑÑÐºÐ¸ Ð¾Ñ Ð½Ð°ÑÑÑÐ¿Ð»ÐµÐ½Ð¸Ñ ÑÑÐµÐ·Ð²ÑÑÐ°Ð¹Ð½ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹ Ð¸ Ð½ÐµÐ±Ð»Ð°Ð³Ð¾Ð¿ÑÐ¸ÑÑÐ½ÑÑ ÑÐ¾Ð±ÑÑÐ¸Ð¹. ÐÑÐ¾ÐµÐºÑ Ð¿Ð¾ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½Ð¾ Ð¾Ð¿Ð°ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ° ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÑÑ Ð½Ð° ÑÐ°Ð·Ð½ÑÑ ÑÑÐ°Ð¿Ð°Ñ ÐµÐ³Ð¾ Ð¶Ð¸Ð·Ð½ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ¸ÐºÐ»Ð°. Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑÑÐ´ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¾ÑÐµÐ½ÐºÐ¸ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ¸ÑÑÐµÐ¼ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑ Ð¾ÑÐµÐ½Ð¸ÑÑ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ð¸ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð´Ð°Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð´Ð»Ñ Ð·Ð°ÐºÐ°Ð·ÑÐ¸ÐºÐ¾Ð² Ð¸ Ð¿Ð¾ÑÑÐµÐ±Ð¸ÑÐµÐ»ÐµÐ¹ Ñ ÑÑÐµÑÐ¾Ð¼ Ð¿ÑÑÐ¼ÑÑ Ð¸ ÐºÐ¾ÑÐ²ÐµÐ½Ð½ÑÑ Ð²ÑÐ³Ð¾Ð´. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÐµÐ´ÐµÑÐ°Ð»ÑÐ½Ð¾Ð¼Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð¼Ñ ÑÑÐ°Ð½Ð´Ð°ÑÑÑ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² 280700 Â«Ð¢ÐµÑÐ½Ð¾ÑÑÐµÑÐ½Ð°Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÑÂ». ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð², Ð°ÑÐ¿Ð¸ÑÐ°Ð½ÑÐ¾Ð² ÐÐ£ÐÐ¾Ð², Ð¾Ð±ÑÑÐ°ÑÑÐ¸ÑÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Â«Ð¢ÐµÑÐ½Ð¾ÑÑÐµÑÐ½Ð°Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÑÂ» Ð¸ Ð²ÑÐµÑ Ð»Ð¸Ñ, Ð¸Ð½ÑÐµÑÐµÑÑÑÑÐ¸ÑÑÑ Ð¾ÑÐµÐ½ÐºÐ¾Ð¹ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ¾ÑÐ¸Ð¾-ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ¸ÑÑÐµÐ¼.
Come ti misuro lo spin del buco nero
Creators: Guido Risaliti
Publisher: name: Media Inaf
Year: 2014

Una lente  gravitazionale ha moltiplicato la luce osservata di un quasar lontano oltre 6 miliardi di anni luce, permettendo la misura diretta della velocità di rotazione (spin) del buco nero gigante che lo alimenta
Quantum behavior of a superconducting Duffing oscillator at the dissipative phase transition
Creators: name: Chen, Qi-Ming
name: Fischer, Michael
name: Nojiri, Yuki
name: Renger, Michael
name: Xie, Edwar
name: Partanen, Matti
name: Pogorzalek, Stefan
name: Fedorov, Kirill G.
name: Marx, Achim
name: Deppe, Frank
name: Gross, Rudolf
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Understanding the non-deterministic behavior of deterministic nonlinear systems has been an implicit dream since Lorenz named it the "butterfly effect". A prominent example is the hysteresis and bistability of the Duffing oscillator, which in the classical description is attributed to the coexistence of two steady states in a double-well potential. However, this interpretation fails in the quantum-mechanical perspective, where a single unique steady state is allowed in the whole parameter space. Here, we measure the non-equilibrium dynamics of a superconducting Duffing oscillator and reconcile the classical and quantum descriptions in a unified picture of quantum metastability. We demonstrate that the two classically regarded steady states are in fact metastable states. They have a remarkably long lifetime in the classical hysteresis regime but must eventually relax into a single unique steady state allowed by quantum mechanics. By engineering the lifetime of the metastable states sufficiently large, we observe a first-order dissipative phase transition, which mimics a sudden change of the mean field in a 11-site Bose-Hubbard lattice. We also reveal the two distinct phases of the transition by quantum state tomography, namely a coherent-state phase and a squeezed-state phase separated by a critical point. Our results reveal a smooth quantum state evolution behind a sudden dissipative phase transition, and they form an essential step towards understanding hysteresis and instability in non-equilibrium systems.
Universality in Three- and Four-Body Bound States of Ultracold Atoms
Creators: name: Pollack, Scott E.
name: Dries, Daniel
name: Hulet, Randall G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Under certain circumstances, three or more interacting particles may form bound states. While the general few-body problem is not analytically solvable, the so-called Efimov trimers appear for a system of three particles with resonant two-body interactions. The binding energies of these trimers are predicted to be universally connected to each other, independent of the microscopic details of the interaction. By exploiting a Feshbach resonance to widely tune the interactions between trapped ultracold lithium atoms, we find evidence for two universally connected Efimov trimers and their associated four-body bound states. A total of eleven precisely determined three- and four-body features are found in the inelastic loss spectrum. Their relative locations on either side of the resonance agree well with universal theory, while a systematic deviation from universality is found when comparing features across the resonance.
description: 16 pages including figures and Supplementary Online Material
I dimeri per cercare vita nello spazio
Creators: Giulia Bonelli
Publisher: name: Media Inaf
Year: 2014

Un gruppo di ricerca dell’Università di Washington ha messo a punto un metodo per isolare i dimeri di ossigeno, particolari molecole che possono formarsi nell’atmosfera ad alte pressioni e densità. Con l’obiettivo di estendere la tecnica agli esopianeti e cercare eventuale presenza di altre forme di vita
title: Urban development processes in the UK and China: a comparative study
Creators: name: Chen, Xueying
Publisher: name: University of Reading
Year: 2019

description: This research looks at the processes of urban redevelopment programmes through a comparison between the UK and China. It centres on the networks of relationships between the key agents engaged in the conceptualisation and implementation of central city property redevelopment schemes. This is undertaken to explore similarities and differences between those networks and evaluate their impacts on co-ordination within the development process and the resultant redevelopment outcomes; and the networks are analysed with reference to the local institutions that shape individuals’ and organisations’ behaviours in the specific industry. Accordingly, the underlying theoretical perspective is an institutional one which argues that such networks persist across other commercial redevelopment schemes and represent stable structures of building provision in each locality. This approach makes it possible to explore the ways in which local policy makers, planners, developers, building professionals and other stakeholders interact more generally using a limited set of case study schemes. Therefore, six case studies of large-scale urban redevelopment programmes form a cross-section through enduring set of institutional structures central to urban redevelopment and central city property development. 70 interviews were conducted with a range of professionals and key agents involved in those programmes. From these case studies, a good understanding can be derived of the nature of the commercial real estate development industry in the two countries and their drivers and outcomes. It is concluded that, although there are significant differences in the arrangements of agents in property development processes in the two countries, there are also many similarities, because the nature of urban development is to a large extent the same. The types of agents involved and the way they worked together in projects in the two countries converge when market viability is taken into consideration. Nonetheless, widespread distinctions lie in the different institutions of land ownership, the governmental/political system, finance, the real estate market and planning processes, as well as in cultures of inter-personal communication and trust building in the real estate and construction industries. Some of these institutionally-based distinctive arrangements and relationships between agents lead to the different scales, speeds, costs and land-use types in urban redevelopment programmes in the two countries. However, others are found to have limited impact on the processes and outcomes of commercial property development. Notable are those related to community involvement and democratic decision-making, except through the formal processes of central and local governments.
title: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÑÑ ÐÐ­Ð¡ Ñ ÑÐµÐ°ÐºÑÐ¾ÑÐ°Ð¼Ð¸ ÐÐÐ­Ð -1000 Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 4*1000 ÐÐÐ¢
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÑÐ¾Ð¿Ð°ÑÐµÐ², ÐÐ°Ð»ÐµÑÐ¸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: 2016
Subjects: ÑÑÐ°Ð½ÑÐ¸Ñ
ÑÐµÐ°ÐºÑÐ¾Ñ
ÑÐ½ÐµÑÐ³Ð¸Ñ
station
reactor
energy

description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð°ÑÐ¾Ð¼Ð½Ð¾Ð¹ ÑÐ»ÐµÐºÑÑÐ¾ÑÑÐ°Ð½ÑÐ¸Ð¸. ÐÑÐ±ÑÐ°Ð½Ð° Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð°Ñ ÑÑÑÑÐºÑÑÑÐ½Ð°Ñ ÑÑÐµÐ¼Ð° Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ðµ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ. Ð Ð°ÑÑÑÐ¸ÑÐ°Ð½Ñ ÑÐ¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ. ÐÑÐ±ÑÐ°Ð½Ñ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑ Ð¸ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¸. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð³Ð»Ð°Ð²Ð½Ð°Ñ ÑÑÐµÐ¼Ð° ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹ Ð¸ ÑÑÐµÐ¼Ð° ÑÐ¾Ð±ÑÑÐ²ÐµÐ½Ð½ÑÑ Ð½ÑÐ¶Ð´.
description: This paper focuses on designing the electrical system of a nuclear power plant. The appropriate block diagram and the basic electrical equipment are presented; short circuit currents are calculated; electrical appliances and conductors are covered in this study. The main scheme of electrical connections, as well as auxiliaries schemes elaborated in the course of the work are presented.
Enriched physics-informed neural networks for in-plane crack problems: Theory and MATLAB codes
Creators: name: Gu, Yan
name: Zhang, Chuanzeng
name: Zhang, Peijun
name: Golub, Mikhail V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 35M32

description: In this paper, a method based on the physics-informed neural networks (PINNs) is presented to model in-plane crack problems in the linear elastic fracture mechanics. Instead of forming a mesh, the PINNs is meshless and can be trained on batches of randomly sampled collocation points. In order to capture the theoretical singular behavior of the near-tip stress and strain fields, the standard PINNs formulation is enriched here by including the crack-tip asymptotic functions such that the singular solutions at the crack-tip region can be modeled accurately without a high degree of nodal refinement. The learnable parameters of the enriched PINNs are trained to satisfy the governing equations of the cracked body and the corresponding boundary conditions. It was found that the incorporation of the crack-tip enrichment functions in PINNs is substantially simpler and more trouble-free than in the finite element (FEM) or boundary element (BEM) methods. The present algorithm is tested on a class of representative benchmarks with different modes of loading types. Results show that the present method allows the calculation of accurate stress intensity factors (SIFs) with far fewer degrees of freedom. A self-contained MATLAB code and data-sets accompanying this manuscript are also provided.
description: 31 pages, 17 figures, 5 tables
A caccia di gravitoni nel fondo cosmico
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

Due ricercatori statunitensi, tra cui il premio Nobel Frank Wilczek, sostengono che la misura della polarizzazione della radiazione cosmica di fondo fornirà anche la conferma della natura quantistica della gravità. Con il commento di Alessandro Gruppuso dell’INAF-IASF Bologna
The output entropy of quantum channels and operations
Creators: name: Shirokov, M. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Continuity properties of the output entropy of positive linear maps between Banach spaces of trace class operators are investigated with the special attention to the classes of quantum channels and operations. It is shown that finiteness of the output entropy of a positive map on the whole input state space implies its continuity. Sufficient conditions for this property expressed in terms of the Kraus representation of quantum channels and operations are presented. The characterization of a positive map "preserving continuity of the entropy" (in the sense that continuity of the entropy on a set of input states implies continuity of its output entropy on this set) is obtained and its applications to the class of quantum operations are considered. The special relation between continuity properties of the output entropies of complementary quantum operations is established and its corollaries are discussed. Continuity conditions for the output entropy of positive maps considered as a function of a pair (map, input state) are also obtained. Several applications to the quantum information theory are presented in the last part of the paper.
description: 47 pages
title: ÐÐ¸Ð·Ð½ÐµÑ-ÑÐµÐ½ÑÑ Ñ Ð¼Ð¾Ð½Ð¾Ð»Ð¸ÑÐ½ÑÐ¼Ð¸ Ð±ÐµÐ·Ð±Ð°Ð»Ð¾ÑÐ½ÑÐ¼Ð¸ Ð¿Ð»Ð¸ÑÐ°Ð¼Ð¸ Ð¿ÐµÑÐµÐºÑÑÑÐ¸Ñ
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ·Ð°ÑÐ¾Ð², ÐÑÑÑÑ
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¸ÑÑÐµÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ
ÑÐµÐ¾ÑÐ¸Ñ ÑÐ¿ÑÑÐ³Ð¾ÑÑÐ¸
Ð°ÑÑ Ð¸ÑÐµÐºÑÑÑÐ½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ
ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ
Ð¾Ð±ÑÐµÐ¼Ð½Ð¾ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²Ð¾ÑÐ½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ»Ð¾ Ð·Ð°Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¾ Ð·Ð´Ð°Ð½Ð¸Ðµ Ð±Ð¸Ð·Ð½ÐµÑ-ÑÐµÐ½ÑÑÐ°, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÐ½ÑÐµ, ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½ÑÐµ Ð¸ Ð¾Ð±ÑÐµÐ¼Ð½Ð¾ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²Ð¾ÑÐ½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿ÑÐ¾ÐµÐºÑ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°, ÑÐ¼ÐµÑÐ° Ð½Ð° Ð¾Ð±ÑÐµÐºÑ ÐºÐ°Ð¿Ð¸ÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°, Ð° ÑÐ°ÐºÐ¶Ðµ Ð±ÑÐ» Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð´Ð¸ÑÑÐµÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½ÑÑ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ð¹ ÑÐµÐ¾ÑÐ¸Ð¸ ÑÐ¿ÑÑÐ³Ð¾ÑÑÐ¸ Ð¾Ð± Ð¸Ð·Ð³Ð¸Ð±Ðµ Ð¿Ð»Ð°ÑÑÐ¸Ð½ Ð¿Ð¾ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼ ÐÐÐ­ Ð¸ ÐÑÐ±Ð½Ð¾Ð²Ð°-ÐÐ°Ð»ÐµÑÐºÐ¸Ð½Ð°.
title: ÐÑÑÐ¾ÑÐ½ÑÐ¹ Ð¶Ð¸Ð»Ð¾Ð¹ Ð´Ð¾Ð¼ ÑÐ¾ Ð²ÑÑÑÐ¾ÐµÐ½Ð½Ð¾Ð¹ Ð´Ð²ÑÑ ÑÑÐ¾Ð²Ð½ÐµÐ²Ð¾Ð¹ Ð¿Ð°ÑÐºÐ¾Ð²ÐºÐ¾Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾Ð»Ð¾ÑÑÑ, ÐÐ°ÑÐ¸Ñ
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: Ð¼Ð¾Ð½Ð¾Ð»Ð¸ÑÐ½Ð¾Ðµ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð¾
Ð²ÑÑÐ¾ÑÐ½Ð¾Ðµ Ð·Ð´Ð°Ð½Ð¸Ðµ
Ð¶Ð¸Ð»Ð¾Ðµ Ð·Ð´Ð°Ð½Ð¸Ðµ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½ 34-ÐµÑ ÑÑÐ°Ð¶Ð½ÑÐ¹ Ð¶Ð¸Ð»Ð¾Ð¹ Ð´Ð¾Ð¼ ÑÐ¾ Ð²ÑÑÑÐ¾ÐµÐ½Ð½Ð¾Ð¹ Ð´Ð²ÑÑÑÑÐ¾Ð²Ð½ÐµÐ²Ð¾Ð¹ Ð¿Ð°ÑÐºÐ¾Ð²ÐºÐ¾Ð¹. ÐÐ´ÑÐµÑ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°: Ð³. Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³, ÐÑÐ¸Ð¼Ð¾ÑÑÐºÐ¸Ð¹ ÑÐ°Ð¹Ð¾Ð½, Ð¿ÑÐ¾ÑÐ¿ÐµÐºÑ ÐÐ¾ÑÐ¾Ð»ÐµÐ²Ð°.
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La NASA punta a Europa
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

La Casa Bianca ha sbloccato il capitolo di spesa dedicato alle spese spaziali dell'Agenzia americana. In totale per il 2015 si parla di 17,5 miliardi dollari, di cui 15 milioni verranno utilizzati per la prima fase di progettazione della sonda che raggiungerà l'orbita gioviana fra poco più di 10 anni.
Regularized estimation of large-scale gene association networks using graphical Gaussian models
Creators: name: Kraemer, Nicole
name: Schaefer, Juliane
name: Boulesteix, Anne-Laure
Publisher: name: arXiv
Year: 2009
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Graphical Gaussian models are popular tools for the estimation of (undirected) gene association networks from microarray data. A key issue when the number of variables greatly exceeds the number of samples is the estimation of the matrix of partial correlations. Since the (Moore-Penrose) inverse of the sample covariance matrix leads to poor estimates in this scenario, standard methods are inappropriate and adequate regularization techniques are needed. In this article, we investigate a general framework for combining regularized regression methods with the estimation of Graphical Gaussian models. This framework includes various existing methods as well as two new approaches based on ridge regression and adaptive lasso, respectively. These methods are extensively compared both qualitatively and quantitatively within a simulation study and through an application to six diverse real data sets. In addition, all proposed algorithms are implemented in the R package "parcor", available from the R repository CRAN.
description: added additional experiments
Emergent s-wave interactions between identical fermions in quasi-one-dimensional geometries
Creators: name: Jackson, Kenneth G.
name: Dale, Colin J.
name: Maki, Jeff
name: Xie, Kevin G. S.
name: Olsen, Ben A.
name: Ahmed-Braun, Denise J. M.
name: Zhang, Shizhong
name: Thywissen, Joseph H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Orbital degrees of freedom play an essential role in metals, semiconductors, and strongly confined electronic systems. Experiments with ultracold atoms have used highly anisotropic confinement to explore low-dimensional physics, but typically eliminate orbital degrees of freedom by preparing motional ground states in strongly confined directions. Here we prepare multi-band systems of spin-polarized fermionic potassium ($^{40}$K) in the quasi-one-dimensional (q1D) regime and quantify the strength of atom-atom correlations using radio-frequency spectroscopy. The activation of orbital degrees of freedom leads to a new phenomenon: a low-energy scattering channel that has even particle-exchange parity along the q1D axis, as if the underlying interactions were s-wave. This emergent exchange symmetry is enabled by orbital singlet wave functions in the strongly confined directions, which also confer high-momentum components to low-energy q1D collisions. We measure both the q1D odd-wave and even-wave "contact" parameters for the first time, and compare them to theoretical predictions of one-dimensional many-body models. The strength and spatial symmetry of interactions are tuned by a p-wave Feshbach resonance and by transverse confinement strength. Near resonance, the even-wave contact approaches its theoretical unitary value, whereas the maximum observed odd-wave contact remains several orders of magnitude below its unitary limit. Low-energy scattering channels of multi-orbital systems, such as those found here, may provide new routes for the exploration of universal many-body phenomena.
description: v2: revised manuscript
MUSE apre gli occhi
Creators: Giulia Bonelli
Publisher: name: Media Inaf
Year: 2014

Un nuovo potente spettrografo in 3D è stato installato con successo sul Very Large Telescope dell’ESO. Nel periodo di prova ha già analizzato galassie lontane e stelle brillanti, e presto si spingerà a osservare l’Universo distante
A Simple Baseline for Video Restoration with Grouped Spatial-temporal Shift
Creators: name: Li, Dasong
name: Shi, Xiaoyu
name: Zhang, Yi
name: Cheung, Ka Chun
name: See, Simon
name: Wang, Xiaogang
name: Qin, Hongwei
name: Li, Hongsheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Video restoration, which aims to restore clear frames from degraded videos, has numerous important applications. The key to video restoration depends on utilizing inter-frame information. However, existing deep learning methods often rely on complicated network architectures, such as optical flow estimation, deformable convolution, and cross-frame self-attention layers, resulting in high computational costs. In this study, we propose a simple yet effective framework for video restoration. Our approach is based on grouped spatial-temporal shift, which is a lightweight and straightforward technique that can implicitly capture inter-frame correspondences for multi-frame aggregation. By introducing grouped spatial shift, we attain expansive effective receptive fields. Combined with basic 2D convolution, this simple framework can effectively aggregate inter-frame information. Extensive experiments demonstrate that our framework outperforms the previous state-of-the-art method, while using less than a quarter of its computational cost, on both video deblurring and video denoising tasks. These results indicate the potential for our approach to significantly reduce computational overhead while maintaining high-quality results. Code is avaliable at https://github.com/dasongli1/Shift-Net.
description: Accepted to CVPR2023
title: Ð¤Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐºÐ¾ÑÐ¿Ð¾ÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ ÐºÑÐ»ÑÑÑÑÑ ÐºÐ°Ðº ÑÐ°ÐºÑÐ¾ÑÐ° ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸
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Ð¾Ð»ÐºÐ¾Ð²Ð°, ÐÐ°Ð´ÐµÐ¶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: ÐºÐ¾ÑÐ¿Ð¾ÑÐ°ÑÐ¸Ð²Ð½Ð°Ñ ÐºÑÐ»ÑÑÑÑÐ°
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description: Ð¦ÐµÐ»ÑÑ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ð¸ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾ÑÐ¿Ð¾ÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ ÐºÑÐ»ÑÑÑÑÑ ÐºÐ°Ðº ÑÐ°ÐºÑÐ¾ÑÐ° ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸.
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Tau contribution and precision measurement of theta23 at a neutrino factory
Creators: name: Indumathi, D.
name: Sinha, Nita
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss precision measurements of the leading atmospheric parameters at a standard neutrino factory. The oscillation of the muon and electron neutrinos (anti-neutrinos) to tau neutrinos (anti-neutrinos) adds to the muon events sample (both right sign and wrong sign) via leptonic decays of the taus produced through charge-current interactions in the detector. We focus on how this contribution affects a precision measurement of the atmospheric mixing parameters and the deviation of muon neutrino -- tau neutrino mixing from maximality.
description: 4 pages, 5 figures, presented by NS at the 11th International Workshop on Neutrino Factories, Superbeams and Beta Beams (Nufact09), July 20-25, 2009, Illinois Institute of Technology, Chicago, USA
Raggi X dal giovane Universo
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2014

Un buco nero supermassiccio di ben due miliardi di masse solari alimentava già 750 milioni di anni dopo il Big Bang il quasar ULAS J1120. Lo studio della sua radiazione X, pubblicato in un articolo a guida INAF su Astronomy&Astrophysics, rivela inaspettatamente numerose somiglianze con oggetti simili, osservati però quando l'Universo era più 'maturo'.
Higher-order rich-club phenomenon in collaborative research grants
Creators: name: Nakajima, Kazuki
name: Shudo, Kazuyuki
name: Masuda, Naoki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Modern scientific work, including writing papers and submitting research grant proposals, increasingly involves researchers from different institutions. In grant collaborations, it is known that institutions involved in many collaborations tend to densely collaborate with each other, forming rich clubs. Here we investigate higher-order rich-club phenomena in collaborative research grants among institutions and their associations with research productivity. Using publicly available data from the National Science Foundation in the US, we construct a bipartite network of institutions and collaborative grants, which distinguishes among the collaboration with different numbers of institutions. By extending the concept and algorithms of the rich club for dyadic networks to the case of bipartite networks, we find rich clubs both in the entire bipartite network and the bipartite subnetwork induced by the collaborative grants involving a given number of institutions up to five. We also find that the collaborative grants within rich clubs tend to be more productive in a per-dollar sense than the control. Our results highlight advantages of collaborative grants among the institutions in the rich clubs.
description: 18 pages, 6 figures, 2 tables
title: Project English for Mechanical Engineers
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐµÐ·ÐµÐ½ÑÐµÐ²Ð°, ÐÐ°ÑÐ¸Ñ
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: 2019
Subjects: ÐÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ñ
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description: ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¿Ð¾ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð°Ð²ÑÐ¾ÑÑÐºÐ¸Ð¼ ÐºÑÑÑÐ¾Ð¼ Ð¿Ð¾ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ðµ Â«ÐÐ½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ð¹ ÑÐ·ÑÐº Ð² Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸Â» Ð¸ Ð²ÐºÐ»ÑÑÐ°ÐµÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÐµÐºÑÑÑ Ð¿Ð¾ Ð¼ÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ð¸, Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ð¸ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÑ; Ð´Ð¸ÑÐºÑÑÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÐµÐºÑÑÑ, Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð½ÑÐµ Ð¾Ð±ÑÐµÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¼ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð°Ð¼. Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ Ð¿ÑÐµÐ´Ð»Ð°Ð³Ð°ÑÑÑÑ Ð¾ÑÐ¸Ð³Ð¸Ð½Ð°Ð»ÑÐ½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ Ð¸Ð· ÐÐ½ÑÑÐµÐ½ÐµÑ-ÑÐµÑÑÑÑÐ¾Ð², ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð²Ð½ÑÐµ ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ñ, Ð·Ð°Ð´Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð°ÑÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¿Ð¸ÑÑÐ¼ÐµÐ½Ð½Ð¾Ð¹ Ð¿ÑÐ°ÐºÑÐ¸ÐºÐµ. Ð ÐºÑÑÑ ÑÐ°ÐºÐ¶Ðµ Ð²ÐºÐ»ÑÑÐµÐ½ Ð¿ÑÐ¾ÐµÐºÑ, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð¿ÑÐµÐ´Ð¿Ð¾Ð»Ð°Ð³Ð°ÐµÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ñ Instagram. Ð Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¸ ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÑÐµ ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ²Ð° Ð¿Ð¾ ÑÐ°Ð±Ð¾ÑÐµ Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐ¼Ð¸ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐ¼Ð¸ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ð°Ð¼Ð¸, Ð½Ð° ÐºÐ¾ÑÐ¾ÑÑÑ Ð±Ð°Ð·Ð¸ÑÑÑÑÑÑ Ð¾ÑÐ´ÐµÐ»ÑÐ½ÑÐµ ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ñ. ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ Ð¼Ð°Ð³Ð¸ÑÑÑÐ°Ð½ÑÐ¾Ð² ÐºÐ°ÑÐµÐ´ÑÑ Â«ÐÐ²ÑÐ¾Ð¼Ð°ÑÑÂ» Ð¸Ð½ÑÑÐ¸ÑÑÑÐ° Ð¼ÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ð¸, Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ð¸ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ°.
Cosmological Fluctuations from Infra-Red Cascading During Inflation
Creators: name: Barnaby, Neil
name: Huang, Zhiqi
name: Kofman, Lev
name: Pogosyan, Dmitry
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: We propose a qualitatively new mechanism for generating cosmological fluctuations from inflation. The non-equilibrium excitation of interacting scalar fields often evolves into infra-red (IR) and ultra-violet (UV) cascading, resulting in an intermediate scaling regime. We observe elements of this phenomenon in a simple model with inflaton ϕand iso-inflaton χfields interacting during inflation via the coupling g^2 (ϕ-ϕ_0)^2 χ^2. Iso-inflaton particles are created during inflation when they become instantaneously massless at ϕ=ϕ_0, with occupation numbers not exceeding unity. We point out that very quickly the produced χparticles become heavy and their multiple re-scatterings off the homogeneous condensate ϕ(t) generates bremschtrahlung radiation of light inflaton IR fluctuations with high occupation numbers. The subsequent evolution of these IR fluctuations is qualitatively similar to that of the usual inflationary fluctuations, but their initial amplitude is different. The IR cascading generates a bump-shaped contribution to the cosmological curvature fluctuations, which can even dominate over the usual fluctuations for g^2>0.06. The IR cascading curvature fluctuations are significantly non-gaussian and the strength and location of the bump are model-dependent, through g^2 and ϕ_0. The effect from IR cascading fluctuations is significantly larger than that from the momentary slowing-down of ϕ(t). With a sequence of such bursts of particle production, the superposition of the bumps can lead to a new broad band non-gaussian component of cosmological fluctuations added to the usual fluctuations. Such a sequence of particle creation events can, but need not, lead to trapped inflation.
description: 13 pages, 9 figures. Accepted for publication in Phys. Rev. D
Il segreto della galassia “medusa”
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

La galassia, che si trova nell'ammasso del Regolo, sta attraversando il caldissimo cluster Abell 3627. Questo ha causato il fenomeno dello ram pressure stripping: quando le nubi di gas delle galassie si mescolano, la pressione aumenta e il risultato è che il gas all'interno viene espulso formando le caratteristiche striature del tipo raffigurato nella foto. Si tratta di giovani stelle ricoperte da gas e polvere che adesso vagano nello spazio.
Bolt vola, su Titano
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

Usain Bolt ha le ali ai piedi, ma su Titano potrebbe veramente spiccare il volo con il solo aiuto di una tuta alare. E' quel che risulta a un gruppo di studenti dell'Università di Leicester che hanno applicato le leggi di base della fisica a un ipotetico decollo nella densa atmosfera della luna maggiore di Saturno.
Standard, eppure misteriose?
Creators: Matteo De Giuli
Publisher: name: Media Inaf
Year: 2014

Secondo un nuovo studio le nane bianche che esplodendo danno vita alle supernovae di tipo Ia (le migliori "candele standard" cosmologiche che abbiamo) avrebbero uno spettro di masse sorprendentemente ampio. Questo costringerebbe a rivedere i modelli teorici che descrivono i processi che innescano le esplosioni. Un'ipotesi che però non convince Enrico Cappellaro, astronomo ordinario dell'INAF - Osservatorio Astronomico di Padova
È festa a Città della Scienza
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2014

Iniziative, laboratori, festeggiamenti. E la firma d’un accordo di programma per la ricostruzione dello Science Center. Così Città della Scienza affronta il ricordo del rogo che il 4 marzo 2013 la ridusse in macerie. L’intervista al direttore Luigi Amodio.
Search for Close Stellar Encounters with the Solar System Based on Data from the Gaia DR3 Catalogue
Creators: name: Bobylev, Vadim
name: Bajkova, Anisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A search for close encounters of stars with the Solar System was performed using data from the Gaia\,DR3 catalog. We considered 31 stars with the approach parameter $d_{\rm min}<1$~pc. Among them, 15 stars are appearing as candidates for close encounters for the first time. The status of the stars GJ\,710 and HD\,7977 has been confirmed as candidates for deep penetration into the inner region of the Oort cloud. In particular, for GJ\,710 and HD\,7977, respectively, the following estimates of approach parameters are obtained: $t_{\rm min}= 1.324\pm0.026$~Myr and $d_{\rm min}=0.052\pm0.002$~pc, $t_{\rm min}=-2.830\pm0.025$~Myr and $d_{\rm min}=0.071\pm0.027$~pc. Among the newly identified candidates, the most interesting is the white dwarf WD\,0810-353, for which the following approach parameters were found: $t_{\rm min}=0.029\pm0.001$~Myr and $d_{\rm min}=0.150\pm0.003$~pc.
description: 10 pages, 3 tables, accepted in the Astronomical Letters
Un piccolo mondo per ogni piccola stella
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

Un gruppo di ricercatori inglesi e cileni ha utilizzato i dati raccolti da UVES e HARPS presso l'ESO per confermare il bottino della loro "caccia": tre di questi pianeti extrasolari si troverebbero nella zona abitabile delle loro stelle. Le nane rosse sono distanti tra i 15 e gli 80 anni luce dal Sole.
Scienziati in erba per Cassini
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2014

Sono oltre 800, 55 dei quali dall'Italia, gli studenti che hanno preso parte al concorso indetto dalla NASA per aiutare il team della missione Cassini a scegliere il prossimo obiettivo per le osservazioni. Il sito dell'INAF e quello della NASA i più cliccati per le loro ricerche.
title: PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ðµ Ð¿ÑÐµÐ¼Ð¸Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ³Ð¼ÐµÐ½ÑÐ° Ð³Ð¾ÑÑÐ¸Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð±Ð¸Ð·Ð½ÐµÑÐ° W hotels Worldwide
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: Ð Ð¾Ð´Ð¸Ð½Ð°, ÐÐ°ÑÐ°Ð»ÑÑ
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: 2016
Subjects: PR
Ð¿ÑÐµÐ¼Ð¸ÑÐ¼
Ð³Ð¾ÑÑÐ¸Ð½Ð¸ÑÐ°
Ð¿ÑÐµÐ¼Ð¸Ð°Ð»ÑÐ½ÑÐ¹ ÑÐµÐ³Ð¼ÐµÐ½Ñ
premium
hotel
premium segment

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ PR Ð² Ð³Ð¾ÑÑÐ¸Ð½Ð¸ÑÐ½Ð¾Ð¼ Ð±Ð¸Ð·Ð½ÐµÑÐµ Ð¿ÑÐµÐ¼Ð¸Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ³Ð¼ÐµÐ½ÑÐ°. ÐÐ° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð¾ÑÐµÐ»Ñ W St. Petersburg ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð¾Ð±ÑÐ°Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð±ÑÐµÐ½Ð´Ð° W, Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¸ ÑÑÐµÐ´ÑÑÐ² PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ¼Ð¸Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ³Ð¼ÐµÐ½ÑÐ° Ð³Ð¾ÑÑÐµÐ¹ W St. Petersburg, Ð° ÑÐ°Ðº Ð¶Ðµ Ð°Ð½Ð°Ð»Ð¸Ð· Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¾ÑÐ´ÐµÐ»Ð° Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ð° Ð¸ PR Ð² Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð´Ð°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð½Ð° Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÑÑ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ñ.
description: The work is devoted to the activities of PR in the premium segment of the hospitality industry. On the example of the hotel W St. Petersburg is considered a general characteristic of the brand W, an analysis of the ways and means of PR-supporting of premium guests in W St. Petersburg, as well as activity analysis of the marketing and PR department in the organization.
Ultra linear magnetic flux-to-voltage conversion in superconducting quantum interference proximity transistors
Creators: name: De Simoni, Giorgio
name: Giazotto, Francesco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Superconducting interferometers are quantum devices able to transduce a magnetic flux into an electrical output with excellent sensitivity, integrability and power consumption. Yet, their voltage response is intrinsically non-linear, a limitation which is conventionally circumvented through the introduction of compensation inductances or by the construction of complex device arrays. Here we propose an intrinsically-linear flux-to-voltage mesoscopic transducer, called bi-SQUIPT, based on the superconducting quantum interference proximity transistor as fundamental building block. The bi-SQUIPT provides a voltage-noise spectral density as low as $\sim10^{-16}$ V/Hz$^{1/2}$ and, more interestingly, under a proper operation parameter selection, exhibits a spur-free dynamic range as large as $\sim60$ dB, a value on par with that obtained with state-of-the-art SQUID-based linear flux-to-voltage superconducting transducers. Furthermore, thanks to its peculiar measurement configuration, the bi-SQUIPT is tolerant to imperfections and non-idealities in general. For the above reasons, we believe that the bi-SQUIPT could provide a relevant step-beyond in the field of low-dissipation and low-noise current amplification with a special emphasis on applications in cryogenic quantum electronics.
description: 9 pages, 6 figures
Ettore, campione dei troiani
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

E’ un complesso mondo geologico in miniatura l’asteroide “troiano” 624 Hektor, il più grande e l’unico provvisto di luna nella categoria dei corpi che seguono la stessa orbita di Giove. Una nuova ricerca ipotizza che sia nato dall’incontro tra due asteroidi ghiacciati, simili a quelli nella fascia di Kuiper, trascinati da Giove nella sua peregrinazione verso l’interno del sistema solare.
Il reuccio nel Leone
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2014

Regolo, la stella principale della costellazione del Leone, brilla verso sud nei cieli serali di questo mese. Ma quello che vediamo anche ad occhio nudo è solo l'oggetto più luminoso di un complesso sistema stellare multiplo. I consigli per osservarlo, insieme alle costellazioni, ai pianeti e ai principali fenomeni celesti di questo mese.
title: Community laboratories in the United States: BioMakerspaces for life science learning
Creators: name: Walker, Justice T.
name: Stamato, Lydia
name: Asgarali-Hoffman, S. Nisa
name: Hamidi, Foad
name: Scheifele, Lisa Z.
Publisher: name: Sage
Year: 2022
Subjects: subject: Human-Centered Computing Program
subject: UMBC Human-Centered Computing Program

description: Informal learning environments play a critical role in science, technology, engineering, and mathematics learning across the lifespan and are consequential in informing public understanding and engagement. This can be difficult to accomplish in life science where expertise thresholds and logistics involved with handling biological materials can restrict access. Community laboratories are informal learning environments that provide access to the resources necessary to carry out pursuits using enabling biotechnologies. We investigate a group of these spaces in order to ascertain how this occurs—with specific attention to how material and intellectual resources are structured and shape learning. Using surveys and focus group interviews, we explore a group of these spaces located in the United States. We found that the spaces examined offer learning activities that are sufficiently scaffolded and flexible as to promote personalized and community-driven practice. We discuss these findings in relation to informal learning environment design and learning