cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Una galassia fossile nel cuore della Via Lattea
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

Grazie ai dati di Apogee della Sloan Digital Sky Surveys, gli scienziati hanno scoperto una galassia fossile nascosta nel cuore della Via Lattea, chiamata Ercole, le cui stelle rappresentano oggi circa un terzo della massa dell'intero alone della Via Lattea. Le due potrebbero essersi scontrate dieci miliardi di anni fa, quando la nostra galassia era ancora nella sua fase iniziale di formazione. Tutti i dettagli su Mnras
Dimension of Conformal Blocks in Five Dimensional Kaehler-Chern-Simons Theory
Creators: name: Liu, Haitao
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We briefly review the Kaehler-Chern-Simon theory on 5-manifolds which are trivial circle bundles over 4-dimensional Kaehler manifolds and present a detailed calculation of the path integral, using the method of Blau and Thompson.
description: 17 pages, typos corrected and minor corrections; the version to appear in Journal of Mathematical Physics
Veleno su Io: trovate tracce di acido solfidrico
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2020

Grazie ai dati spettrometrici in infrarosso raccolti dallo strumento italiano Jiram a bordo della sonda Juno della Nasa, è stato possibile delineare la mappa della composizione chimica di alcune lune di Giove. I primi autori dei due studi su Io e Ganimede sono Federico Tosi e Alessandro Mura, entrambi ricercatori dell’Istituto nazionale di astrofisica
The place of the personal estimate in the critical theories of certain nineteenth-century critics
Creators: name: Bilsland, John Winstanley
Publisher: name: University of British Columbia
Year: 2012

description: The thesis covers the critical theories of eight English critics of the nineteenth century: Wordsworth, Coleridge, Lamb, Hazlitt, De Quincey, Arnold, Pater, and Wilde. I have first defined the personal estimate as "that estimate of art in which the nature of the critic as an individual man has influenced his judgment.” I recognize that all criticism mast have something of the personal estimate in it, hut the true critic will, as much as possible, cleanse his criticism of it in order to reveal the nature of the work of art as in itself it really is. I have then analyzed the theories of Wordsworth and Coleridge in order to indicate that the basis on which they established Romantic criticism is one of personal emotion-first in the poet, and then in the reader and personal pleasure. In the theories of Lamb, Hazlitt, and De Quincey I have traced the development of impressionism in Romantic criticism, and the degree to which that impressionism leads these three men to a personal estimate of literature. In Arnold's theories I have analyzed his concept of poetry as a criticism of life, and indicated the way in which that concept leads Arnold to a recognition that although the critic must first feel the emotional effects of poetry, his ultimate aim must be to see the object as in itself it really is. I have then turned to the theories of Pater and suggested that although he bases his theories on impressions he recognizes that the experiencing of impressions alone is not the critic's sole aim: the critic must contemplate his impressions in order to arrive at a perception of the essence of a work, and, in the case of a great work of art, a perception of the ideals of life which it embodies. And I have last considered the theories of Wilde who also builds on impressions, but believes the end of criticism to be like poetry itself the communication of one man's emotional response, in this case the critic's response to a work of art: whether or not that response represents a balanced appreciation of the work itself does not matter. From the survey of the theories of these eight men I have arrived at the conclusion that all follow the right path when they recognize the importance of the personal response in criticism. Some, however, lose sight of their duty as critics when they allow their own experience of life to colour their response and offer a purely personal estimate of a work as criticism. The greatest of the eight - Wordsworth, Coleridge, and Arnold - recognize that in criticism we must see the poet's poem and not our own. Only by doing so can we arrive at a real estimate.
An efficient algorithm for the parallel solution of high-dimensional differential equations
Creators: name: Klus, Stefan
name: Sahai, Tuhin
name: Liu, Cong
name: Dellnitz, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The study of high-dimensional differential equations is challenging and difficult due to the analytical and computational intractability. Here, we improve the speed of waveform relaxation (WR), a method to simulate high-dimensional differential-algebraic equations. This new method termed adaptive waveform relaxation (AWR) is tested on a communication network example. Further we propose different heuristics for computing graph partitions tailored to adaptive waveform relaxation. We find that AWR coupled with appropriate graph partitioning methods provides a speedup by a factor between 3 and 16.
Asymmetric statistics of order books: The role of discreteness and evidence for strategic order placement
Creators: name: Zaccaria, A.
name: Cristelli, M.
name: Alfi, V.
name: Ciulla, F.
name: Pietronero, L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: We show that the statistics of spreads in real order books is characterized by an intrinsic asymmetry due to discreteness effects for even or odd values of the spread. An analysis of data from the NYSE order book points out that traders' strategies contribute to this asymmetry. We also investigate this phenomenon in the framework of a microscopic model and, by introducing a non-uniform deposition mechanism for limit orders, we are able to quantitatively reproduce the asymmetry found in the experimental data. Simulations of our model also show a realistic dynamics with a sort of intermittent behavior characterized by long periods in which the order book is compact and liquid interrupted by volatile configurations. The order placement strategies produce a non-trivial behavior of the spread relaxation dynamics which is similar to the one observed in real markets.
description: 18 pages, 12 figures
The oscillating dark energy and cosmological Casimir effect
Creators: name: Gorbunova, Olesya
name: Sáez-Gómez, Diego
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The role of dynamical cosmological Casimir effect to phantom (constant $w$) and oscillating Universe is discussed. It is shown explicitly that its role is not essential near to Big Rip singularity. However, the account of Casimir fluid makes the scale factor approach to Rip time to be faster. Rip time itself maybe changed too.
description: 4 pages. Added references
The effect of diabetes mellitus on nervous tissue
Creators: name: Rivers, William Alexander
Publisher: name: University of British Columbia
Year: 2012

description: A group of alloxanized rats fed on a high salt diet were studied histologically to determine the direct or indirect effect of diabetes mellitus on the nervous system. The most significant changes observed were in the vascular system of the brain. Lesions of the arteries were identical with those found in arteriosclerosis and massive hemorrhages accompanied by multiple diffuse diapedesis not only in the arteries but also in the veins was indicative of hypertension. It is believed the hypertensive condition was induced by a combination of the diabetes and salt feeding. Associated with the vascular dysfunction generalized cerebral changes were noted. They included neuron degeneration, exhibited by loss of Nissl granules, vacuolization of the cytoplasm and cerebral softening. Also Gitter cell invasion and proliferation occurred at the sites of vascular disturbance. It appears that the neurological involvement in diabetes is a direct result of changes in the blood system and not of the disease itself.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° CANopen, ÐºÐ°Ðº ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ° Ð·Ð°Ð¼ÐºÐ½ÑÑÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: Ð¡Ð¾Ð»Ð¾Ð²ÑÐµÐ², ÐÐµÐ¾Ð½Ð¸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Ð½ÑÐµÑÑÐµÐ¹ÑÑ
ÐÐ²ÑÐ¾Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
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description: Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼Ð¾ÑÑÐ¸ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ¾Ð² Ð¸ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ð¾Ð² Ð² Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ñ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÑÐ¼ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¾Ð¼ ÑÐ°Ð±Ð¾ÑÑ CANopen. ÐÐ·ÑÑÐµÐ½ Ð¸Ð½ÑÐµÑÑÐµÐ¹Ñ CANopen, ÐºÐ°Ðº ÑÐ»ÐµÐ¼ÐµÐ½Ñ Ð·Ð°Ð¼ÐºÐ½ÑÑÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ñ Ð²ÑÑÐ°Ð±Ð¾ÑÐºÐ¾Ð¹ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¹ Ð¿Ð¾ ÐµÐ³Ð¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ. ÐÑÑÐ²Ð»ÐµÐ½Ñ ÑÐ°ÐºÑÐ¾ÑÑ, Ð²Ð»Ð¸ÑÑÑÐ¸Ðµ Ð½Ð° ÐºÐ°ÑÐµÑÑÐ²Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð² ÑÐ¸ÑÑÐµÐ¼Ðµ Ñ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°Ð¼Ð¸ CANopen. Ð¡Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾ Ð´Ð»Ñ Ð¿Ð¾Ð´ÐºÐ»ÑÑÐµÐ½Ð¸Ñ Ðº ÑÐ¸Ð½Ðµ CAN Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑÐ° MSC2515 Ð¸ Arduino Uno.
La Blue Ring Nebula e il destino delle stelle binarie
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

Nel 2004, nella nostra galassia è stato scoperto un oggetto raro chiamato Blue Ring Nebula: un anello di idrogeno gassoso con una stella al centro. Nei successivi 16 anni, l'oggetto è stato studiato nel dettaglio con diversi telescopi spaziali e terrestri, e ora si è finalmente capito che si tratta del residuo di due stelle che si sono fuse. Tutti i dettagli su Nature
Toric ideals generated by circuits
Creators: name: Martinez-Bernal, Jose
name: Villarreal, Rafael H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13H10, 05B35

description: Let I be the toric ideal of a homogeneous normal configuration. We prove that I is generated by circuits if and only if each unbalanced circuit of I has a "connector" which is a linear combination of circuits with a square-free term. In particular if each circuit of I with non-square-free terms is balanced, then I is generated by circuits. As a consequence we prove that the toric ideal of a normal edge subring of a multigraph is generated by circuits with a square-free term.
description: Apostolos Thoma has pointed out to us that the condition of Theorem 3.2 is not sufficient for the normality of the edge subring. Algebra Colloquium, to appear
Novembre stellare per gli appassionati di scienza
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2020

Al via Futuro Remoto, Focus Live e National Geographics Festival. In ognuno di questi eventi l’Istituto nazionale di astrofisica sarà presente con varie attività. Inoltre, l’Inaf ha sottoscritto un accordo con i Cosmos Studios grazie al quale potrà tradurre e diffondere attraverso Media Inaf alcuni documentari della serie Cosmos
Vanishing lung syndrome
Creators: name: Narayanasamy, Sabarish
Publisher: name: EURORAD
Year: 2015
Subjects: subject: Lung
subject: CT
subject: CT-High Resolution
subject: Conventional radiography
subject: Diagnostic procedure
subject: Pathology

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 35 years
description: Clinical History: A 35 year old male patient presented to the emergency department complaining of acute breathlessness. The patient gave history of on and off dyspnea with worsening of symptoms on strenuous activity. There were no other respiratory complaints. Patient was ... Final Diagnosis: Vanishing lung syndrome
title: Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐ¸ÑÐºÐ°Ð¼Ð¸ Ð² ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¸Ñ Ð±Ð°Ð½ÐºÐ°Ñ ÐÐ¸Ñ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£ 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: ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐ¸ÑÐºÐ°Ð¼Ð¸
ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¸Ðµ Ð±Ð°Ð½ÐºÐ¸
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ° ÐÐ¸ÑÐ°Ñ
ÑÐ¸ÑÐº-Ð¼ÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ

description: ÐÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² ÑÐ¾Ð¼, ÑÑÐ¾ Ð½ÑÐ½ÐµÑÐ½ÐµÐµ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½ÑÑ ÑÐ°Ð½ÐºÑÐ¸Ð¹ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ Ð²Ð°Ð¶Ð½Ð¾ Ð´Ð»Ñ Ð±Ð°Ð½ÐºÐ¾Ð². ÐÐ¾ÑÑÐ°Ð¿Ð½Ð¾Ðµ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÐ°Ð½ÐºÑÐ¸Ð¹ Ð½ÐµÐ³Ð°ÑÐ¸Ð²Ð½Ð¾ Ð¾ÑÑÐ°Ð·Ð¸Ð»Ð¾ÑÑ Ð½Ð° Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð±Ð°Ð½ÐºÐ°. ÐÑÐ¾ÑÐµÑÑ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ¸ÑÐºÐ°Ð¼Ð¸ Ð¸Ð³ÑÐ°ÐµÑ Ð¾ÑÐ¾Ð±ÑÑ ÑÐ¾Ð»Ñ Ð² Ð±Ð¾ÑÑÐ±Ðµ Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÐ²Ð¸ÑÐ¼Ð¸ ÑÐ°Ð½ÐºÑÐ¸Ð¹. Ð¡ÑÑÐµÑÑÐ²ÑÑÑÐ¸Ðµ Ð¼ÐµÑÐ¾Ð´Ñ Ð¸ Ð¼ÐµÑÐ¾Ð´Ñ Ð½Ðµ Ð¼Ð¾Ð³ÑÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÑÑÑÑÑ Ñ ÑÐ°ÑÑÑÑÐ¸Ð¼Ð¸ ÑÐ¸ÑÐºÐ°Ð¼Ð¸.Ð¦ÐµÐ»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð² Ð°Ð½Ð°Ð»Ð¸Ð·Ðµ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð¿Ð¾ Ð¼Ð¸Ð½Ð¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ¸ÑÐºÐ¾Ð² Ð´Ð»Ñ Ð±Ð°Ð½ÐºÐ¾Ð² ÐÐ¸ÑÐ°Ñ.
La magnetar della Volpetta continua a stupire
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

Un team di scienziati guidato da Chalmers ha utilizzato quattro radiotelescopi europei per studiare la sorgente del lampo radio veloce osservato nell’aprile 2020 nella nostra galassia, riuscendo a confermare che i lampi radio veloci sono generati da magnetar, e possono avere una luminosità sorprendentemente diversa. Tutti i dettagli su Nature Astronomy
title: Ð¡Ð¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð³ÐµÑÐµÑÐ¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ñ ÑÐ°Ð½Ð¸Ð»Ð¸ÑÐ° Ð´Ð°Ð½Ð½ÑÑ Ð¿Ð¾Ð´ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÐµÐ¼ Ð¡Ð£ÐÐ Oracle
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°ÑÐ»Ð¾Ð², ÐÐ°Ð²ÐµÐ»
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: Ð³ÐµÑÐµÑÐ¾Ð³ÐµÐ½Ð½Ð°Ñ Ð±Ð°Ð·Ð° Ð´Ð°Ð½Ð½ÑÑ
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description: Ð¢ÐµÐ¼Ð° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð¾ÑÐ½Ð¾ÑÐ¸ÑÑÑ Ðº Ð·Ð°Ð´Ð°ÑÐ°Ð¼ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð³ÐµÑÐµÑÐ¾Ð³ÐµÐ½Ð½ÑÑ Ð±Ð°Ð· Ð´Ð°Ð½Ð½ÑÑ. Ð ÑÐ°Ð¼ÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ðµ Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÑ Ð³ÐµÑÐµÑÐ¾Ð³ÐµÐ½Ð½ÑÑ Ð±Ð°Ð· Ð´Ð°Ð½Ð½ÑÑ, Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð´Ð°Ð½Ð½ÑÑ Ð² Ð¡Ð£ÐÐ Oracle Ð¸ MongoDB, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÐ° Ð³ÐµÑÐµÑÐ¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ°Ð½Ð¸Ð»Ð¸ÑÐ° Ð´Ð°Ð½Ð½ÑÑ Ð¿Ð¾Ð´ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÐµÐ¼ Ð¡Ð£ÐÐ Oracle, Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ Ð±Ð°Ð·Ñ Ð´Ð°Ð½Ð½ÑÑ, ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð° Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½Ð°Ñ Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÐ°, Ð¿ÑÐ¾ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° Ð½Ð° ÑÐ°Ð±Ð¾ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½Ð°Ñ Ð±Ð°Ð·Ð° Ð´Ð°Ð½Ð½ÑÑ, Ð¸ÑÐ¿ÑÑÐ°Ð½Ñ Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÐµ ÐµÐµ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸, Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ ÑÐ¸Ð»ÑÐ½ÑÐµ Ð¸ ÑÐ»Ð°Ð±ÑÐµ ÑÑÐ¾ÑÐ¾Ð½Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð´ÑÐºÑÐ°.
Universal Correlations in Pion-less EFT with the Resonating Group Model: Three and Four Nucleons
Creators: name: Kirscher, Johannes
name: Griesshammer, Harald W.
name: Shukla, Deepshikha
name: Hofmann, Hartmut M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Effective Field Theory "without pions" at next-to-leading order is used to analyze universal bound state and scattering properties of the 3- and 4-nucleon system. Results of a variety of phase shift equivalent nuclear potentials are presented for bound state properties of 3H and 4He, and for the singlet S-wave 3He-neutron scattering length a_0(3He-n). The calculations are performed with the Refined Resonating Group Method and include a full treatment of the Coulomb interaction and the leading-order 3-nucleon interaction. The results compare favorably with data and values from AV18(+UIX) model calculations. A new correlation between a_0(3He-n) and the 3H binding energy is found. Furthermore, we confirm at next-to-leading order the correlations, already found at leading-order, between the 3H binding energy and the 3H charge radius, and the Tjon line. With the 3H binding energy as input, we get predictions of the Effective Field Theory "without pions" at next-to-leading order for the root mean square charge radius of 3H of (1.6\pm 0.2) fm, for the 4He binding energy of (28\pm 2.5) MeV, and for Re(a_0(3He-n)) of (7.5\pm 0.6)fm. Including the Coulomb interaction, the splitting in binding energy between 3H and 3He is found to be (0.66\pm 0.03) MeV. The discrepancy to data of (0.10\mp 0.03) MeV is model independently attributed to higher order charge independence breaking interactions. We also demonstrate that different results for the same observable stem from higher order effects, and carefully assess that numerical uncertainties are negligible. Our results demonstrate the convergence and usefulness of the pion-less theory at next-to-leading order in the 4He channel. We conclude that no 4-nucleon interaction is needed to renormalize the theory at next-to-leading order in the 4-nucleon sector.
description: 24 pages revtex4, including 8 figures as .eps files embedded with includegraphicx, leading-order results added, calculations include the LO three-nucleon interaction explicitly, comment on Wigner bound added, minor modifications
ExoMars 2022, con i paracadute ancora non ci siamo
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2020

L’ultimo test di caduta da alta quota per il rover Esa, compiuto lunedì 9 novembre, è andato bene solo in parte. L’estrazione e la decelerazione dei paracadute hanno funzionato come previsto, il veicolo di prova è atterrato in sicurezza, ma si sono verificati di nuovo alcuni strappi alla calotta. È in corso un’analisi completa in vista dei prossimi test, previsti per la prima metà del 2021
title: ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° ÑÐ°ÑÑÐµÑÐ° Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾ÐºÐ° ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° Ñ ÑÐµÑÑÑÑ Ð³ÑÑÐ¿Ð¿Ð°Ð¼Ð¸ Ð·Ð°Ð¿Ð°Ð·Ð´ÑÐ²Ð°ÑÑÐ¸Ñ Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð² Ð¿ÑÐ¸ Ð¼Ð³Ð½Ð¾Ð²ÐµÐ½Ð½Ð¾Ð¼ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½Ð¾Ð¹ ÑÐµÐ°ÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐµÐ»Ð¸ÑÐ¾Ð²Ð°, ÐÐ½Ð½Ð°
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: Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð½ÑÐ¹ Ð¿Ð¾ÑÐ¾Ðº
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description: ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¸ ÐºÐ¸Ð½ÐµÑÐ¸ÐºÐ¸ ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° Ñ ÑÑÐµÑÐ¾Ð¼ ÑÐµÑÑÐ¸ Ð³ÑÑÐ¿Ð¿ Ð·Ð°Ð¿Ð°Ð·Ð´ÑÐ²Ð°ÑÑÐ¸Ñ Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð². ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð¿ÑÐµÐ´ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ Ð·Ð°Ð´Ð°Ð½Ð¸Ñ ÑÐ°Ð³Ð° Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð²ÐµÐ»Ð¸ÑÐ¸Ð½Ñ Ð²Ð²Ð¾Ð´Ð¸Ð¼Ð¾Ð¹ ÑÐµÐ°ÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸. ÐÐ° Ð²ÑÑÐ¾Ð´Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð³ÑÐ°ÑÐ¸ÐºÐ¸ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð² Ð¾Ñ Ð²ÑÐµÐ¼ÐµÐ½Ð¸. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ°ÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð² Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ð°Ñ Ð¾Ñ 0,1 Ð´Ð¾ 0,9 Ñ ÑÐ°Ð³Ð¾Ð¼ 0,1 Ð¸ Ð¾Ñ -0,01 Ð´Ð¾ -0,09 Ñ ÑÐ°Ð³Ð¾Ð¼ -0,01. ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð¸Ð¼ÐµÐµÑ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ ÐÐ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÐºÐ°Ð»Ð¸Ð±ÑÐ°ÑÐ¾ÑÐ° ÑÐµÐ°ÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸.
title: ÐÑÑÐ¾ÑÐ¸Ñ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ°Ð²Ð»Ð¾Ð²Ð°, ÐÐ»ÑÐ³Ð°
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2021
Subjects: Ð¸ÑÑÐ¾ÑÐ¸Ñ Ð Ð¾ÑÑÐ¸Ð¸
ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

description: Ð¦ÐµÐ»ÑÑ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ ÑÑÐµÐ±Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÑÑÑÐµÐ¼Ð»ÐµÐ½Ð¸Ðµ Ð´Ð°ÑÑ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÐ¼ ÑÑÑÐ´ÐµÐ½ÑÐ°Ð¼ ÑÐ¸ÑÑÐµÐ¼Ð½ÑÐµ, ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÐµ Ð·Ð½Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð¸ÑÑÐ¾ÑÐ¸Ð¸ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸. Ð Ð´Ð¾ÑÑÑÐ¿Ð½Ð¾Ð¹ ÑÐ¾ÑÐ¼Ðµ Ð¸Ð·Ð»Ð¾Ð¶Ð¸ÑÑ Ð¾Ð±ÑÐ¸ÑÐ½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð», Ð¾Ð±ÑÐ°ÑÐ¸Ð² Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ Ð½Ð° Ð²Ð°Ð¶Ð½ÐµÐ¹ÑÐ¸Ðµ ÑÐ¾Ð±ÑÑÐ¸Ñ Ð¸ÑÑÐ¾ÑÐ¸Ð¸ Ð Ð¾ÑÑÐ¸Ð¸ Ð² ÑÐ°Ð·Ð½ÑÐµ Ð¸ÑÑÐ¾ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¿Ð¾ÑÐ¸. Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÑÐ°Ð¿Ñ Ð¿Ð¾Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹, ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹, ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹, ÐºÑÐ»ÑÑÑÑÐ½Ð¾Ð¹ Ð¶Ð¸Ð·Ð½Ð¸ Ð Ð¾ÑÑÐ¸Ð¸. ÐÐ±ÑÐ°ÑÐµÐ½Ð¾ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ Ð½Ð° ÑÐ¾ Ð¾Ð±ÑÑÐ¾ÑÑÐµÐ»ÑÑÑÐ²Ð¾, ÑÑÐ¾ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ°Ñ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÑÐµÐµÐ¼Ð½Ð¸ÑÐµÐ¹ ÑÐ°Ð¼Ð¾Ð´ÐµÑÐ¶Ð°Ð²Ð½Ð¾Ð¹ Ð¸ ÑÐ¾Ð²ÐµÑÑÐºÐ¾Ð¹ Ð Ð¾ÑÑÐ¸Ð¸, ÑÐ°Ð²Ð½Ð¾ ÐºÐ°Ðº Ð¸ Ð¡Ð¡Ð¡Ð . ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð² ÑÐµÐ±Ñ ÑÐ°Ð·Ð´ÐµÐ»Ñ, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐ¾ÑÑÐ¾ÑÑ Ð¸Ð· ÑÐµÐ¼ ÐºÑÑÑÐ° Â«ÐÑÑÐ¾ÑÐ¸Ñ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸Â». Ð¡ÑÑÐ´ÐµÐ½ÑÐ°Ð¼ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ñ Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð´Ð»Ñ ÑÐ°Ð¼Ð¾Ð¿ÑÐ¾Ð²ÐµÑÐºÐ¸ Ð¸ ÑÐ°Ð¼Ð¾ÑÑÐ¾ÑÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð³Ð»Ð¾ÑÑÐ°ÑÐ¸Ð¹, Ð¾Ð±Ð»ÐµÐ³ÑÐ°ÑÑÐ¸Ð¹ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÐ¼ ÑÑÑÐ´ÐµÐ½ÑÐ°Ð¼ Ð²Ð¾ÑÐ¿ÑÐ¸ÑÑÐ¸Ðµ Ð¸ Ð¿Ð¾Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ ÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¸ÑÑÐ¾ÑÐ¸Ð¸. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÑ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²-Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Â«ÐÐ°ÑÑÐ±ÐµÐ¶Ð½Ð¾Ðµ ÑÐµÐ³Ð¸Ð¾Ð½Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸ÐµÂ», Ð¸Ð·ÑÑÐ°ÑÑÐ¸Ñ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ Â«ÐÑÑÐ¾ÑÐ¸Ñ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸Â».
Coincidenze cosmiche: dal cervello all’universo
Creators: Claudia Mignone
Publisher: name: Media Inaf
Year: 2020

Un nuovo studio, nato dalla collaborazione tra un astrofisico e un neurochirurgo italiani e pubblicato sulla rivista Frontiers in Physics, mette a confronto due tra i più enigmatici e complessi sistemi che esistano in natura – la rete delle galassie che compongono l’universo e la rete dei neuroni all’interno del cervello umano – analizzandone somiglianze e differenze in maniera quantitativa. Media Inaf ha intervistato uno dei due autori, Franco Vazza dell'Università di Bologna
Cocycle deformations for Hopf algebras with a coalgebra projection
Creators: name: Ardizzoni, Alessandro
name: Beattie, Margaret
name: Menini, Claudia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16W30, 16S40

description: Let $H$ be a Hopf algebra over a field $K$ of characteristic $0$ and let $A$ be a bialgebra or Hopf algebra such that $H$ is isomorphic to a sub-Hopf algebra of $A$ and there is an $H$-bilinear coalgebra projection $π$ from $A$ to $H$ which splits the inclusion. Then $A \cong R \#_ξH$ where $R$ is the pre-bialgebra of coinvariants. In this paper we study the deformations of $A$ by an $H$-bilinear cocycle. If $γ$ is a cocycle for $A$, then $γ$ can be restricted to a cocycle $γ_R$ for $R$, and $A^γ\cong R^{γ_R} \#_{ξ_γ} H$. As examples, we consider liftings of $\mathcal{B}(V) \# K[Γ]$ where $Γ$ is a finite abelian group, $V$ is a quantum plane and $\mathcal{B}(V)$ is its Nichols algebra, and explicitly construct the cocycle which twists the Radford biproduct into the lifting.
description: J. Algebra, to appear
Mattoncini per la vita prima delle stelle
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

Un team internazionale di scienziati ha dimostrato che la glicina, il più semplice degli amminoacidi e fondamentale mattone della vita, può formarsi anche nelle dure condizioni che governano la chimica nello spazio. I risultati, pubblicati su Nature Astronomy, suggeriscono infatti come la glicina si riesca a formare in dense nubi interstellari oscure ben prima che in tali nubi si formino nuove stelle e pianeti
Retroperitoneal ACE-inhibitor-induced angioedema
Creators: name: Tonolini, Massimo
Publisher: name: EURORAD
Year: 2015
Subjects: subject: Abdomen
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Drugs / Reactions

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 68 years
description: Clinical History: Sudden lumbar and abdominal pain without vomiting, changed bowel habits, abnormal vital signs and peritonism since a few hours. Medical history included hypertension, resection of early-stage breast cancer, a similar self-limiting episode of abdominal pai... Final Diagnosis: Retroperitoneal oedema from visceral ACE-inhibitor-induced angioedema
Esopianeti dal terrazzo: intervista a Gianluca Masi
Creators: Luca Nardi
Publisher: name: Media Inaf
Year: 2020

L’Osservatorio Bellatrix, accessibile tramite il Virtual Telescope Project, osserva i cieli da oltre venti anni dai tetti di Ceccano, nel frusinate. Tra i suoi vari traguardi, di recente è entrato nel gruppo di osservatori che supportano Tess, il cacciatore di esopianeti della Nasa. Ne parliamo Gianluca Masi, astrofisico fondatore del progetto
Quelle stelle troppo antiche per il disco galattico
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2020

Una ricerca condotta da un team internazionali di astronomi ha scoperto una popolazione molto antica di stelle in orbita nel disco della Via Lattea, una regione nella quale non si pensava potessero esistere, spingendo a ripensare alle attuali teorie di formazione ed evoluzione della nostra galassia. Il primo autore dello studio, pubblicato su Mnras, è Giacomo Cordoni, dottorando all’Università di Padova. Lo abbiamo intervistato
title: ÐÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð² Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐµÐºÑÑÐ°Ñ
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: Ð¡Ð¸Ð¼ÐºÐ¸Ð½Ð°, ÐÐ»ÐµÐºÑÐ°Ð½Ð´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: 2016
Subjects: ÑÐµÑÐµÐ²Ð¾Ðµ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ
Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐµÐºÑÑÑ
Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð² Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐµÐºÑÑÐ°Ñ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÑÑÐ°ÑÐµÐ¹ Ð¸Ð· ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ Â«ÐÐ¾Ð²Ð°Ñ Ð³Ð°Ð·ÐµÑÐ°Â». ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð¿Ð¾ ÑÐµÐ¾ÑÐ¸Ð¸ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð´Ð»Ñ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐµÐºÑÑÐ°. ÐÐ°Ð½Ð° ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° ÑÐµÐ¾ÑÐ¸Ð¸ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ ÐºÐ°Ðº Ð½Ð°ÑÐºÐ¸, ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÐ°ÑÑÐ¸ ÐºÐ°Ðº Ð¶Ð°Ð½ÑÐ° Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÐºÐ¸. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð´Ð»Ñ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ±Ð¾ÑÐ½Ð¾Ð²ÑÐ²Ð°ÐµÑÑÑ Ð¼ÐµÑÐ¾Ð´ Ð¾ÑÐ±Ð¾ÑÐ° ÑÐµÐºÑÑÐ¾Ð², Ð´Ð°ÐµÑÑÑ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ, Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÑÑÑÑ Ð¿ÑÐ±Ð»Ð¸ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°ÑÑÐ¸ Ð¿Ð¾ ÑÐ¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¼Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ Ð½Ð° Ð½Ð°Ð»Ð¸ÑÐ¸Ðµ ÑÑÐµÐ´ÑÑÐ² ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ. ÐÐµÐ»Ð°ÑÑÑÑ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾ÑÐ½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐ¸ÐºÐ¸ ÑÐ°Ð¼Ð¾Ð³Ð¾ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ.
ScanMars, un radar per il sottosuolo marziano
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2020

Astrobiology dedica un numero speciale alla missione Amadee-18, progettata per simulare in ogni minimo dettaglio l'esperienza di cinque “astronauti analoghi” in una regione desertica dell'Oman, una replica quasi perfetta di Marte. Lo strumento italiano ScanMars è un georadar in grado di “guardare” il sottosuolo marziano in cerca di acqua e di strutture geologiche di interesse scientifico. Ne parliamo con il primo autore, Alessandro Frigeri dell’Inaf Iaps di Roma
Mentre l’universo si raffredda, il gas si scalda
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2020

La temperatura media dell’universo, quella delle grandi strutture nelle quali risiedono le stelle e le galassie che osserviamo, è cresciuta nel tempo – così come è cresciuta l’aggregazione gerarchica delle strutture stesse. Lo dimostra uno studio pubblicato su ApJ che ha correlato i dati del satellite Planck, della missione Iras e della survey Sdss per misurare la temperatura del gas nelle grandi strutture dell’universo attraverso un fenomeno di interazione fra questo e i fotoni della radiazione cosmica di fondo noto come “effetto Sunyaev-Zel'dovich”
Stabilizing Open Quantum Systems by Markovian Reservoir Engineering
Creators: name: Schirmer, S. G.
name: Wang, Xiaoting
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study open quantum systems whose evolution is governed by a master equation of Kossakowski-Gorini-Sudarshan-Lindblad type and give a characterization of the convex set of steady states of such systems based on the generalized Bloch representation. It is shown that an isolated steady state of the Bloch equation cannot be a center, i.e., that the existence of a unique steady state implies attractivity and global asymptotic stability. Necessary and sufficient conditions for the existence of a unique steady state are derived and applied to different physical models including two- and four-level atoms, (truncated) harmonic oscillators, composite and decomposable systems. It is shown how these criteria could be exploited in principle for quantum reservoir engineeing via coherent control and direct feedback to stabilize the system to a desired steady state. We also discuss the question of limit points of the dynamics. Despite the non-existence of isolated centers, open quantum systems can have nontrivial invariant sets. These invariant sets are center manifolds that arise when the Bloch superoperator has purely imaginary eigenvalues and are closely related to decoherence-free subspaces.
description: 16 pages, 4 figures, marginally revised version, mainly fixed some notational inconsistencies that had crept in when we change the notation in some figures without changing the captions and text
Additional file 3 of Accuracy of circulating microRNAs in diagnosis of sepsis: a systematic review and meta-analysis
Creators: name: Shen, Xiaomin
name: Zhang, Jiajie
name: Huang, Yicheng
name: Tong, Jiepeng
name: Zhang, Li
name: Zhang, Zhijuan
name: Yu, Wei
name: Qiu, Yunqing
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 3: Supplemental Table 1. The research type and severity characteristics of 22 included studies
Simultaneous confidence intervals for the population cell means, for two-by-two factorial data, that utilize uncertain prior information
Creators: name: Kabaila, Paul
name: Giri, Khageswor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Consider a two-by-two factorial experiment with more than 1 replicate. Suppose that we have uncertain prior information that the two-factor interaction is zero. We describe new simultaneous frequentist confidence intervals for the 4 population cell means, with simultaneous confidence coefficient 1-alpha, that utilize this prior information in the following sense. These simultaneous confidence intervals define a cube with expected volume that (a) is relatively small when the two-factor interaction is zero and (b) has maximum value that is not too large. Also, these intervals coincide with the standard simultaneous confidence intervals obtained by Tukey's method, with simultaneous confidence coefficient 1-alpha, when the data strongly contradict the prior information that the two-factor interaction is zero. We illustrate the application of these new simultaneous confidence intervals to a real data set.
description: The exposition has been improved. In particular, the introduction has been improved and some new references have been added
Un telescopio liquido per vedere le prime stelle
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2020

Ambisce a diventare il “telescopio definitivo”. La proposta è quella di costruirlo all’interno di un cratere lunare, con uno specchio primario liquido da cento metri di diametro. L’obiettivo scientifico è ambizioso: osservare le stelle di Popolazione III, le prime che si siano mai accese nell’universo. Lo studio è in uscita su ApJ
Tracce di supernove negli anelli degli alberi
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

L'abitabilità planetaria può essere influenzata dall’esposizione alle radiazioni gamma emesse dalle supernove. Le registrazioni impresse nei tronchi degli alberi, che testimoniamo la storia della Terra fino a 40mila anni fa, sono compatibili con l’esplosione di supernove vicine in otto casi, almeno quattro dei quali potrebbero aver innescato perturbazioni del clima terrestre. Tutti i dettagli su International Journal of Astrobiology
Influence of thyroid hormone on the nitrogen excretion and the resistance of goldfish, Carassius auratus, to anoxia
Creators: name: Redlich, Aline Berta
Publisher: name: University of British Columbia
Year: 2012

description: Daily determinations on the nitrogen exoretion in thyroid-treated goldfish and subsequent death by anoxia showed that thyroxin immersion caused a high initial rise in the nitrogen excretion. This is presumably due to metabolism of available protein. This rise was followed by a sharp drop, during which carbohydrates and fats are probably utilized. A second lower peak in nitrogen excretion was registered later, probably due to general tissue breakdown, similar to starvation symptoms. The relative height of the peaks varied with the dose of hormone given. While lower doses and high temperature elevated the nitrogen excretion, higher doses tended to depress it. Desiccated thyroid feeding also had a rather depressive action. The anoxia experiments showed that the higher the dose of the hormone, the longer were the fish able to survive over untreated controls. It was concluded that thyroid treatment increases metabolism in goldfish, which is not accompanied by a raised oxygen consumption as in mammals but by an adaptation to lower oxygen tensions, anaerobic metabolism and respiration. This adaptation seems to increase in efficiency with increasing dose of thyroid hormone.
title: ÐÑÐ¾ÐµÐºÑ Ð³Ð¸Ð´ÑÐ¾ÑÐ·Ð»Ð° Â«ÐÐµÐ½Ð´ÐµÑÑ 1Â» Ð² Ð ÐµÑÐ¿ÑÐ±Ð»Ð¸ÐºÐµ ÐÐ°ÑÐµÐ»Ð¸Ñ
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÑÑÑÐ¾Ð²Ð°Ð»Ð¾Ð², ÐÐ°ÐºÑÐ¸Ð¼
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: ÐÐ¸Ð´ÑÐ¾ÑÐ·Ð»Ñ
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description: Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¿ÑÐ¸ÑÐ¾Ð´Ð½Ð¾-ÐºÐ»Ð¸Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°, Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð³Ð¸Ð´ÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð´Ð°Ð½Ð½ÑÐµ, Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð¾ ÑÑÐ°ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð´ÐµÑÐ¸Ð²Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ°Ð½Ð°Ð»Ð° Ð¸ ÑÐ¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° ÐµÐ³Ð¾ Ð·Ð°ÑÐ¸ÑÐ° Ð¾Ñ Ð¿Ð»Ð°Ð²ÑÐ½Ð¾Ð², Ð½Ð°Ð½Ð¾ÑÐ¾Ð² Ð¸ Ð»ÐµÐ´Ð¾Ð²Ð¾Ð¹ Ð½Ð°Ð³ÑÑÐ·ÐºÐ¸. Ð¢Ð°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° ÐºÐ¾Ð¼Ð¿Ð¾Ð½Ð¾Ð²ÐºÐ° Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹ Ð² Ð¿Ð»Ð°Ð½Ðµ, Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ñ Ð¸Ñ ÑÐ°Ð·Ð¼ÐµÑÑ, Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð³Ð¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¸ Ð³ÐµÐ¾Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ°ÑÑÐµÑ.
Niente è più oscuro di un buco nero
Creators: Patrizia Caraveo
Publisher: name: Media Inaf
Year: 2020

Dalla prima rivelazione di onde gravitazionali al premio Nobel 2020 per la fisica, passando per la celebre “fotografia” del mostro al centro di M87, i buchi neri sono i grandi protagonisti dell’astrofisica di questi ultimi anni. Ne parla un articolo di Patrizia Caraveo pubblicato ieri sul “Domenicale” del Sole24Ore. Lo riproponiamo oggi su Media Inaf con il consenso dell’autrice
The subconvexity problem for $\GL_{2}$
Creators: name: Michel, Philippe
name: Venkatesh, Akshay
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F66, 11F70

description: Generalizing and unifying prior results, we solve the subconvexity problem for the $L$-functions of $\GL_{1}$ and $\GL_{2}$ automorphic representations over a fixed number field, uniformly in all aspects. A novel feature of the present method is the softness of our arguments; this is largely due to a consistent use of canonically normalized period relations, such as those supplied by the work of Waldspurger and Ichino--Ikeda.
description: Almost final version to appear in Publ. Math IHES. References updated.
A volte ritornano: avremo per luna un razzo anni ’60
Creators: Albino Carbognani
Publisher: name: Media Inaf
Year: 2020

Nel settembre 1966 la Nasa lanciò la sonda Surveyor 2 verso la Luna, una delle tante sonde che avevano lo scopo di esplorare la superficie lunare in preparazione delle missioni Apollo. Ora il secondo stadio del razzo Atlas-Centaur usato in quell’occasione probabilmente sta ritornando verso la Terra, e ne diventerà un satellite temporaneo per un periodo di alcuni mesi a cavallo fra il 2020 e il 2021
Radio filamenti e tentacoli nell’ammasso di Perseo
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2020

Nuove inedite immagini con una risoluzione senza precedenti immortalano alcune galassie emittenti a frequenze radio nell’ammasso di Perseo, a 240 milioni di anni luce dalla Terra. Gli scatti, effettuati al Very Large Array, consentono di scorgere nuove strutture e nuove connessioni fra le sorgenti dell’ammasso, e di studiare in dettaglio come ambienti estremi come questo influenzano la vita dell’affollata popolazione che li abita
Qualitative Analysis of Partially-observable Markov Decision Processes
Creators: name: Chatterjee, Krishnendu
name: Doyen, Laurent
name: Henzinger, Thomas A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We study observation-based strategies for partially-observable Markov decision processes (POMDPs) with omega-regular objectives. An observation-based strategy relies on partial information about the history of a play, namely, on the past sequence of observations. We consider the qualitative analysis problem: given a POMDP with an omega-regular objective, whether there is an observation-based strategy to achieve the objective with probability~1 (almost-sure winning), or with positive probability (positive winning). Our main results are twofold. First, we present a complete picture of the computational complexity of the qualitative analysis of POMDP s with parity objectives (a canonical form to express omega-regular objectives) and its subclasses. Our contribution consists in establishing several upper and lower bounds that were not known in literature. Second, we present optimal bounds (matching upper and lower bounds) on the memory required by pure and randomized observation-based strategies for the qualitative analysis of POMDP s with parity objectives and its subclasses.
Nel cuore rovente della fornace cosmica
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2020

Tre telescopi per un ammasso. Lui è Hsc J023336-053022, e per tracciarne tutte le proprietà è stato osservato in ottico, X e radio da Subaru, Xmm-Newton e dal radiotelescopio del Green Bank. I risultati combinati mostrano processi estremi che portano i gas al centro dell’ammasso a temperature di centinaia di milioni di gradi. Fra gli autori dello studio, pubblicato su Mnras, ci sono Fabio Gastaldello e Mauro Sereno dell’Istituto nazionale di astrofisica
SpaceX Crew-1: meno 2 giorni… and counting
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2020

È tutto pronto a Cape Canaveral per il lancio della missione SpaceX Crew-1. I quattro membri dell’equipaggio nei sei mesi di permanenza sulla Stazione spaziale internazionale condurranno numerosi esperimenti scientifici e tecnologici. L’inizio del countdown è previsto per domenica 15 alle 01:49 ora italiana
Bagliori nel buio del lato oscuro di Europa
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2020

Nuovi esperimenti di laboratorio, condotti da alcuni scienziati del Jet Propulsion Laboratory della Nasa, hanno ricreato l’ambiente di Europa, scoprendo che la gelida luna di Giove brilla anche sul lato notturno. Brilla con diversi colori, che dipendono dalla composizione dei sali presenti nel ghiaccio. Tutti i dettagli su Nature Astronomy
La kilonova di maggio fu il vagito di una magnetar
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2020

Un articolo in uscita oggi su ApJ riporta le osservazioni della kilonova più luminosa di sempre. L’analisi dei dati nell’infrarosso indica che potrebbe trattarsi dell’esplosione associata alla formazione di una magnetar, sfidando le teorie correnti su ciò che accade negli istanti successivi all’emissione di un lampo di raggi gamma corto prodotto dalla coalescenza di due stelle di neutroni
A Unified Approach to Distance-Two Colouring of Graphs on Surfaces
Creators: name: Amini, Omid
name: Esperet, Louis
name: Heuvel, Jan van den
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C10

description: In this paper we introduce the notion of $Σ$-colouring of a graph $G$: For given subsets $Σ(v)$ of neighbours of $v$, for every $v\in V(G)$, this is a proper colouring of the vertices of $G$ such that, in addition, vertices that appear together in some $Σ(v)$ receive different colours. This concept generalises the notion of colouring the square of graphs and of cyclic colouring of graphs embedded in a surface. We prove a general result for graphs embeddable in a fixed surface, which implies asymptotic versions of Wegner's and Borodin's Conjecture on the planar version of these two colourings. Using a recent approach of Havet et al., we reduce the problem to edge-colouring of multigraphs, and then use Kahn's result that the list chromatic index is close to the fractional chromatic index. Our results are based on a strong structural lemma for graphs embeddable in a fixed surface, which also implies that the size of a clique in the square of a graph of maximum degree $Δ$ embeddable in some fixed surface is at most $\frac32\,Δ$ plus a constant.
description: 36 pages
Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and butterfly network
Creators: name: Grudka, Andrzej
name: Horodecki, Pawel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze quantum network primitives which are entanglement-breaking. We show superadditivity of quantum and classical capacity regions for quantum multiple-access channel and quantum butterfly network. Since the effects are especially visible at high noise they suggest that quantum information effects may be particularly helpful in the case of the networks with occasional high noise rates. To our knowledge the present effects provide the first qualitative borderline between superadditivities of bipartite and multipartite systems.
description: Accepted for publication in Phys. Rev. A as a Rapid Communication
title: ÐÐ»ÑÑÐ¸ Ðº ÑÑÐµÐ±Ð½Ð¾Ð¼Ñ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ: "ÐÐ½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ð¹ ÑÐ·ÑÐº. The World of Engineering and Technology (ÐÐ¸Ñ ÑÐµÑ Ð½Ð¸ÐºÐ¸ Ð¸ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¹)"
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐµÑÐµÐ±ÑÑÑÐµÐ²Ð°, ÐÐ°ÑÐ¸ÑÐ°
name: ÐÑÐµÐ¿ÐºÐ°Ñ, Ð¢Ð°ÑÑÑÐ½Ð°
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2015
Subjects: Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ð¹ ÑÐ·ÑÐº
ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

description: Ð­ÑÐ¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ²Ð»ÑÐµÑÑÑ Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¼ Ðº ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ð¼Ñ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð. Ð¤. ÐÐµÑÐµÐ±ÑÑÑÐµÐ²Ð¾Ð¹, Ð¢. Ð. ÐÑÐµÐ¿ÐºÐ¾Ð¹ "ÐÐ¸ÑÐµ ÑÐµÑÐ½Ð¸ÐºÐ¸ Ð¸ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹" (The World of Engineering and Technology, Ð¾ÑÐ²ÐµÑÐ°ÑÑÐµÐ¼Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ° Ð¿ÑÐµÐ¿Ð¾Ð´Ð°Ð²Ð°Ð½Ð¸Ñ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÑ ÑÐ·ÑÐºÐ¾Ð² Ð² Ð²ÑÑÑÐµÐ¹ ÑÐºÐ¾Ð»Ðµ. Ð Ð½ÐµÐ¼ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ Ð¾ÑÐ²ÐµÑÑ Ðº Ð·Ð°Ð´Ð°Ð½Ð¸ÑÐ¼ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¼ Ð°Ð²ÑÐ¾ÑÐ°Ð¼Ð¸ (Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¿ÐµÑÐµÑÐ½Ñ Ð´Ð¸Ð´Ð°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ ÐµÐ´Ð¸Ð½Ð¸Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½Ð¾Ð¼Ñ ÑÐ·ÑÐºÑ Ð² Ð²ÑÐ·Ðµ) Ð´Ð»Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¹, Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÑ Ð±ÑÐ´ÑÑÐ¸Ð¼ Ð²ÑÐ¿ÑÑÐºÐ½Ð¸ÐºÐ°Ð¼ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð¸Ð· 12 Ð³Ð»Ð°Ð² Ð² Ð¿Ð¾Ð»Ð½Ð¾Ð¼ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ð¸ Ñ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸ÐµÐ¼ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ. Ð ÑÐ°Ð·Ð´ÐµÐ»Ð°Ñ 4, 7 Ð¸ 12 Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ ÑÐµÐºÑÑÑ Ð·Ð°Ð´Ð°Ð½Ð¸Ð¹ Ð¿Ð¾ Ð°ÑÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ (tapescripts) Listening 1, 2 Ð¸ 3 ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÐµÐ½Ð½Ð¾. Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ Ð¾ÑÐ²ÐµÑÑ Ðº ÑÐµÑÑÐ°Ð¼, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¼ Ð°Ð²ÑÐ¾ÑÐ°Ð¼Ð¸ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð² ÑÐµÐ»ÑÑ ÑÐ°Ð¼Ð¾Ð¿ÑÐ¾Ð²ÐµÑÐºÐ¸ Ð¿ÑÐ¸Ð¾Ð±ÑÐµÑÐµÐ½Ð½ÑÑ Ð·Ð½Ð°Ð½Ð¸Ð¹ Ð¸ Ð²ÐºÐ»ÑÑÐµÐ½Ð½ÑÐ¼Ð¸ Ð²Ð¾ Ð²ÑÐ¾ÑÐ¾Ðµ Ð¸Ð·Ð´Ð°Ð½Ð¸Ðµ (Ð¸ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ðµ Ð¸ Ð´Ð¾Ð¿Ð¾Ð»Ð½ÐµÐ½Ð½Ð¾Ðµ). ÐÑÐ²ÐµÑÑ Ðº Ð·Ð°Ð´Ð°Ð½Ð¸ÑÐ¼ ÑÑÐµÐ±Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð¸Ð·Ð´Ð°ÑÑÑÑ Ð¾ÑÐ´ÐµÐ»ÑÐ½ÑÐ¼ Ð¿ÐµÑÐ°ÑÐ½ÑÐ¼ Ð¸Ð·Ð´Ð°Ð½Ð¸ÐµÐ¼ Ñ ÑÐ¾Ð¹ ÑÐµÐ»ÑÑ, ÑÑÐ¾Ð±Ñ Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð½Ðµ Ð±ÑÐ»Ð¾ ÑÐ¾Ð±Ð»Ð°Ð·Ð½Ð° Ð·Ð°Ð³Ð»ÑÐ½ÑÑÑ Ð² Ð¾ÑÐ²ÐµÑÑ Ð² ÐºÐ¾Ð½ÑÐµ ÐºÐ½Ð¸Ð³Ð¸. ÐÐ²ÑÐ¾ÑÑ Ð½Ð°Ð´ÐµÑÑÑÑ, ÑÑÐ¾, Ð½Ðµ Ð¸Ð¼ÐµÑ ÐºÐ»ÑÑÐµÐ¹, ÑÑÑÐ´ÐµÐ½ÑÑ Ð±ÑÐ´ÑÑ Ð²ÑÐ½ÑÐ¶Ð´ÐµÐ½Ñ Ð¿ÑÐ¾ÑÐ²Ð¸ÑÑ ÑÐ°Ð¼Ð¾ÑÑÐ¾ÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ Ð¿ÑÐ¸ ÑÐ°Ð±Ð¾ÑÐµ Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð¼ ÑÑÐµÐ±Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ. ÐÑÐ¾Ð¼Ðµ ÑÐ¾Ð³Ð¾, Ð¾Ð½Ð¸ Ð±ÑÐ´ÑÑ Ð²ÑÐ½ÑÐ¶Ð´ÐµÐ½Ñ Ð¾Ð±ÑÐ°ÑÐ°ÑÑÑÑ Ðº ÑÐ»Ð¾Ð²Ð°ÑÑÐ¼ Ð¸ Ð´ÑÑÐ³Ð¸Ð¼ ÑÐ¿ÑÐ°Ð²Ð¾ÑÐ½ÑÐ¼ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°Ð¼.