cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Crystallographically oriented Co and Ni nanocrystals inside ZnO formed by ion implantation and postannealing
Creators: name: Zhou, Shengqiang
name: Potzger, K.
name: von Borany, J.
name: Groetzschel, R.
name: Skorupa, W.
name: Helm, M.
name: Fassbender, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the last decade, transition-metal-doped ZnO has been intensively investigated as a route to room-temperature diluted magnetic semiconductors (DMSs). However, the origin for the reported ferromagnetism in ZnO-based DMS remains questionable. Possible options are diluted magnetic semiconductors, spinodal decomposition, or secondary phases. In order to clarify this question, we have performed a thorough characterization of the structural and magnetic properties of Co- and Ni-implanted ZnO single crystals. Our measurements reveal that Co or Ni nanocrystals (NCs) are the major contribution of the measured ferromagnetism. Already in the as-implanted samples, Co or Ni NCs have formed and they exhibit superparamagnetic properties. The Co or Ni NCs are crystallographically oriented with respect to the ZnO matrix. Their magnetic properties, e.g., the anisotropy and the superparamagnetic blocking temperature, can be tuned by annealing. We discuss the magnetic anisotropy of Ni NCs embedded in ZnO concerning the strain anisotropy.
description: 13 pages, 14 figures
Radio structures of the nuclei of nearby Seyfert galaxies and the nature of the missing diffuse emission
Creators: name: Orienti, M.
name: Prieto, M. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present archival high spatial resolution VLA and VLBA data of the nuclei of seven of the nearest and brightest Seyfert galaxies in the Southern Hemisphere. At VLA resolution (~0.1 arcsec), the nucleus of the Seyfert galaxies is unresolved, with the exception of MCG-5-23-16 and NGC 7469 showing a core-jet structure. Three Seyfert nuclei are surrounded by diffuse radio emission related to star-forming regions. VLBA observations with parsec-scale resolution pointed out that in MRK 1239 the nucleus is clearly resolved into two components separated by ~30 pc, while the nucleus of NGC 3783 is unresolved. Further comparison between VLA and VLBA data of these two sources shows that the flux density at parsec scales is only 20% of that measured by the VLA. This suggests that the radio emission is not concentrated in a single central component, as in elliptical radio galaxies, and an additional low-surface brightness component must be present. A comparison of Seyfert nuclei with different radio spectra points out that the ``presence'' of undetected flux on milli-arcsecond scale is common in steep-spectrum objects, while in flat-spectrum objects essentially all the radio emission is recovered. In the steep-spectrum objects, the nature of this ``missing'' flux is likely due to non-thermal AGN-related radiation, perhaps from a jet that gets disrupted in Seyfert galaxies because of the denser environment of their spiral hosts.
description: 13 pages, 9 figures; paper accepted for publication in MNRAS
A simple representation of quantum process tomography
Creators: name: Benenti, Giuliano
name: Strini, Giuliano
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the Fano representation leads to a particularly simple and appealing form of the quantum process tomography matrix $χ_{_F}$, in that the matrix $χ_{_F}$ is real, the number of matrix elements is exactly equal to the number of free parameters required for the complete characterization of a quantum operation, and these matrix elements are directly related to evolution of the expectation values of the system's polarization measurements. These facts are illustrated in the examples of one- and two-qubit quantum noise channels.
description: 5 pages
Blocking Coloured Point Sets
Creators: name: Aloupis, Greg
name: Ballinger, Brad
name: Collette, Sébastien
name: Langerman, Stefan
name: Pór, Attila
name: Wood, David R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C10, 05D10

description: This paper studies problems related to visibility among points in the plane. A point $x$ \emph{blocks} two points $v$ and $w$ if $x$ is in the interior of the line segment $\bar{vw}$. A set of points $P$ is \emph{$k$-blocked} if each point in $P$ is assigned one of $k$ colours, such that distinct points $v,w\in P$ are assigned the same colour if and only if some other point in $P$ blocks $v$ and $w$. The focus of this paper is the conjecture that each $k$-blocked set has bounded size (as a function of $k$). Results in the literature imply that every 2-blocked set has at most 3 points, and every 3-blocked set has at most 6 points. We prove that every 4-blocked set has at most 12 points, and that this bound is tight. In fact, we characterise all sets $\{n_1,n_2,n_3,n_4\}$ such that some 4-blocked set has exactly $n_i$ points in the $i$-th colour class. Amongst other results, for infinitely many values of $k$, we construct $k$-blocked sets with $k^{1.79...}$ points.
Plutone, oceano e tettonica a placche
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

Un oceano d’acqua sotto la superficie ghiacciata di Plutone avrebbe permesso la formazione di placche tettoniche mentre il pianeta nano e la luna Caronte si risistemavano dopo la loro probabile collisione. La verifica dell'ipotesi affidata alla sonda New Horizons, quando raggiungerà Plutone fra poco più di un anno
title: Ð¡Ð¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑ Ð°Ð½Ð¸Ð·Ð¼Ð¾Ð² Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¾Ð² Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²Ð»Ð°ÑÑÐ¸ Ñ ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾ Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¼Ð¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸ÑÐ¼Ð¸ Ð½ÐµÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐµÐºÑÐ¾ÑÐ° (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ð°)
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°ÑÐºÐ¾Ð²Ð°, ÐÐ°Ð»Ð¸Ð½Ð°
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: Ð½ÐµÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ°Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ
ÑÐ¸Ð½Ð°Ð½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÑÐ°ÑÐ¸ÑÑÐ¸ÐºÐ°
Ð·Ð°ÐºÐ¾Ð½Ð¾Ð´Ð°ÑÐµÐ»ÑÑÑÐ²Ð¾

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Population Synthesis of Accreting Neutron Stars Emitting Gravitational Waves
Creators: name: Gittins, Fabian
name: Andersson, Nils
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The fastest-spinning neutron stars in low-mass X-ray binaries, despite having undergone millions of years of accretion, have been observed to spin well below the Keplerian break-up frequency. We simulate the spin evolution of synthetic populations of accreting neutron stars in order to assess whether gravitational waves can explain this behaviour and provide the distribution of spins that is observed. We model both persistent and transient accretion and consider two gravitational-wave-production mechanisms that could be present in these systems: thermal mountains and unstable $r$-modes. We consider the case of no gravitational-wave emission and observe that this does not match well with observation. We find evidence for gravitational waves being able to provide the observed spin distribution; the most promising mechanisms being a permanent quadrupole, thermal mountains and unstable $r$-modes. However, based on the resultant distributions alone it is difficult to distinguish between the competing mechanisms.
description: 12 pages, 12 figures. Accepted for publication in MNRAS
Children in commercial boarding homes : a survey of wards of the Children's Aid Society of Vancouver living in these units in 1954
Creators: name: Wick, Lawrence Bernard
Publisher: name: University of British Columbia
Year: 2012

description: This study is part of a survey of the wards of the Children's Aid Society of Vancouver, B. C. who were not in foster homes on October 31, 1954. Fourteen wards, ranging in age from fourteen to nineteen years, were resident in commercial boarding homes. Agency policy recommends the limiting of the use of commercial boarding homes to the occasional placement of a boy or girl over the age of eighteen years who is self-supporting and sufficiently mature to meet the responsibilities of such a setting. Accordingly, the purpose of this study is to determine why the commercial boarding homes were being used for these particular wards and to what extent the needs of these wards were being met. Information gathered from the records of the children and their parents was summarized and tabulated for the purpose of study and description. This material was examined to determine whether there was any correlation between the children's pre-admission care and their subsequent adjustment in foster and group homes and their later placement in commercial boarding homes. Case illustrations of three of the wards were used In order to elaborate on their developmental experiences and adjustment in various settings. These cases were typical in illustrating the unsettled early lives experienced by most of this group and the effect of these experiences in preventing them from adjusting to the demands of a foster home and, in some cases, of group homes. Further emphasis was given to the harmful effect of continued foster home replacement. In summary, the study of this group of wards pointed out the great need for a receiving home for all children on admission to care for the purposes of familiarization, diagnosis and planning. In order to avoid the use of commercial boarding homes arid to meet the needs of those children who are unable to adjust in foster homes, a variety of group-living residences should be developed. A treatment home is an urgent necessity to assist disturbed children while they are still young enough to be helped. In general, greater resources are required for preventive work with children while still in their own homes as well as for the improvement of the services to the children after their admission into care.
title: Финансовые рынки и финансовые институты
title: Учебное пособие
titleType: Subtitle
Creators: name: Ромашкина Р.К.
Publisher: name: Новосибирский государственный университет экономики и управления «НИНХ»
Year: 2015

description: Учебное пособие дает профессиональные знания в области финансовых рынков. Рассматриваются теоретические, правовые и практические аспекты функционирования основных сегментов и институтов современного финансового рынка России. Предназначено для бакалавров, обучающихся по направлению «Экономика» (профиль «Финансы и кредит»), магистрантов, обучающихся по направлению «Финансы и кредит» (программа «Финансовый менеджмент»), а также студентов и магистрантов иных экономических направлений, интересующихся вопросами функционирования финансовых рынков.
description: The textbook gives the professional knowledge in the field of financial markets. Examines the theoretical, legal and practical aspects of functioning of main segments and institutions of modern financial market of Russia. Is intended for students enrolled in the direction "Economics" (specialization "Finance and credit"), graduate students in the field of "Finance and credit" (program "Financial management"), as well as students and undergraduates of other economic trends, interested in the functioning of financial markets.
Sub-Saturn Planet MOA-2008-BLG-310Lb: Likely To Be In The Galactic Bulge
Creators: name: Janczak, Julia
name: Fukui, A.
name: Dong, Subo
name: Monard, B.
name: Kozlowski, Szymon
name: Gould, A.
name: Beaulieu, J. P.
name: Kubas, Daniel
name: Marquette, J. B.
name: Sumi, T.
name: Bond, I. A.
name: Bennett, D. P.
name: collaboration, the MOA
name: collaboration, the MicroFUN
name: collaboration, the MiNDSTEp
name: collaboration, the PLANET
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of sub-Saturn-mass planet MOA-2008-BLG-310Lb and argue that it is the strongest candidate yet for a bulge planet. Deviations from the single-lens fit are smoothed out by finite-source effects and so are not immediately apparent from the light curve. Nevertheless, we find that a model in which the primary has a planetary companion is favored over the single-lens model by Δχ^2 ~ 880 for an additional three degrees of freedom. Detailed analysis yields a planet/star mass ratio q=(3.3+/-0.3)x10^{-4} and an angular separation between the planet and star within 10% of the angular Einstein radius. The small angular Einstein radius, θ_E=0.155+/-0.011 mas, constrains the distance to the lens to be D_L>6.0 kpc if it is a star (M_L>0.08 M_sun). This is the only microlensing exoplanet host discovered so far that must be in the bulge if it is a star. By analyzing VLT NACO adaptive optics images taken near the baseline of the event, we detect additional blended light that is aligned to within 130 mas of the lensed source. This light is plausibly from the lens, but could also be due to a companion to lens or source, or possibly an unassociated star. If the blended light is indeed due to the lens, we can estimate the mass of the lens, M_L=0.67+/-0.14 M_sun, planet mass m=74+/-17 M_Earth, and projected separation between the planet and host, 1.25+/-0.10 AU, putting it right on the "snow line". If not, then the planet has lower mass, is closer to its host and is colder. To distinguish among these possibilities on reasonable timescales would require obtaining Hubble Space Telescope images almost immediately, before the source-lens relative motion of μ=5 mas yr^{-1} causes them to separate substantially.
description: 36 pages, 8 figures, Submitted to ApJ
Quel girino blu nella Costellazione del Cigno
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

Il telescopio di NASA ed ESA ha fotografato un trio di agglomerati di stelle. Il più grande è stato chiamato "Girino" ed è lungo circa un anno luce. All'interno della testa si trova una protostella luminosa e massiccia, pronta a trasformarsi in stella. Gli altri due oggetti sono il "Pesce rosso" e la "Larva"
title: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÑÑ Ð¢Ð­Ð¦ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 3*200 ÐÐ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°ÑÐºÐ¸Ð½, ÐÑÑÐµÐ¼
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ÐµÐ¿Ð»Ð¾ÑÐ»ÐµÐºÑÑÐ¾ÑÐµÐ½ÑÑÐ°Ð»Ñ (Ð¢Ð­Ð¦)
ÑÐ¸Ð»Ð¾Ð²Ð¾Ðµ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐ¾Ðº ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ
Ð¾ÑÐºÑÑÑÐ¾Ðµ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾
ÐºÐ¾Ð¼Ð¼ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑ

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Mazur's Conjecture and An Unexpected Rational Curve on Kummer Surfaces and their Superelliptic Generalisations
Creators: name: Gvirtz-Chen, Damián
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14J27 (Primary), 11G05 (Secondary)

description: We prove the following special case of Mazur's conjecture on the topology of rational points. Let $E$ be an elliptic curve over $\mathbb{Q}$ with $j$-invariant $1728$. For a class of elliptic pencils which are quadratic twists of $E$ by quartic polynomials, the rational points on the projective line with positive rank fibres are dense in the real topology. This extends results obtained by Rohrlich and Kuwata-Wang for quadratic and cubic polynomials. For the proof, we investigate a highly singular rational curve on the Kummer surface $K$ associated to a product of two elliptic curves over $\mathbb{Q}$, which previously appeared in publications by Mestre, Kuwata-Wang and Satgé. We produce this curve in a simpler manner by finding algebraic equations which give a direct proof of rationality. We find that the same equations give rise to rational curves on a class of more general surfaces extending the Kummer construction. This leads to further applications apart from Mazur's conjecture, for example the existence of rational points on simultaneous twists of superelliptic curves. Finally, we give a proof of Mazur's conjecture for the Kummer surface $K$ without any restrictions on the $j$-invariants of the two elliptic curves.
description: 14 pages, same content as published version except for added remark acknowledging overlap with prior work by Ulas
Supplementary Material from: New Late Cretaceous (Cenomanian) fossil mayfly nymphs (Oligoneuriidae, Heptageniidae, Hexagenitidae) from the Redmond Formation, Labrador, Canada
Creators: name: Mueller, Andre
name: Demers-Potvin, Alexandre
Publisher: name: OSF
Year: 2023

description: This dataset is provided to assist in the examination of the fossil mayfly (Ephemeroptera) specimens described in the accompanying paper. Supplementary figures highlight specific anatomical regions beyond the complete specimen illustrations presented in the main manuscript, as well as photographs of less well preserved specimens. RTI files are provided for each of the three specimens described in the main manuscript with summary instructions on their use.
L’astronomia olimpica a Siracusa
Creators: Francesca Aloisio
Publisher: name: Media Inaf
Year: 2014

40 i ragazzi finalisti della XIV edizione delle Olimpiadi Nazionali di Astronomia si è svolta domenica presso del Liceo Corbino di Siracusa. I più bravi a risolvere i quesiti rappresenteranno l'Italia alle finali internazionali che si terranno in Kirgikhistan
Accurate calibration of test mass displacement in the LIGO interferometers
Creators: name: Goetz, E.
name: Savage, R. L.
name: Garofoli, J.
name: Gonzalez, G.
name: Hirose, E.
name: Kalmus, P.
name: Kawabe, K.
name: Kissel, J.
name: Landry, M.
name: O'Reilly, B.
name: Siemens, X.
name: Stuver, A.
name: Sung, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe three fundamentally different methods we have applied to calibrate the test mass displacement actuators to search for systematic errors in the calibration of the LIGO gravitational-wave detectors. The actuation frequencies tested range from 90 Hz to 1 kHz and the actuation amplitudes range from 1e-6 m to 1e-18 m. For each of the four test mass actuators measured, the weighted mean coefficient over all frequencies for each technique deviates from the average actuation coefficient for all three techniques by less than 4%. This result indicates that systematic errors in the calibration of the responses of the LIGO detectors to differential length variations are within the stated uncertainties.
description: 10 pages, 6 figures, submitted on 31 October 2009 to Classical and Quantum Gravity for the proceedings of 8th Edoardo Amaldi Conference on Gravitational Waves
Putin riceve Bignami a Mosca
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2014

Alla vigilia dell'Assemblea Generale del COSPAR, il Comitato Internazionale per la Ricerca Spaziale, che aveva deciso di festeggiare i suoi 40 anni proprio a Mosca, il suo Presidente Giovanni Bignami ha chiesto un incontro al Presidente russo  Putin
Additional file 6 of Astrocytic APOE4 removal confers cerebrovascular protection despite increased cerebral amyloid angiopathy
Creators: name: Xiong, Monica
name: Wang, Chao
name: Gratuze, Maud
name: Saadi, Fareeha
name: Bao, Xin
name: Bosch, Megan E.
name: Lee, Choonghee
name: Jiang, Hong
name: Serrano, Javier Remolina
name: Gonzales, Ernesto R.
name: Kipnis, Michal
name: Holtzman, David M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health
subject: Computational Biology

description: Additional file 6: Figure S6. Characterization of morphological responses of GFAP+ astrocytes to CAA or plaques. a, Representative reconstruction of GFAP+ astrocytes around CAA or amyloid plaques using Simple Neurite Tracer. b–f, Morphological analyses of GFAP + astrocyte size (Convex Hull analysis) (b), number of processes (c), total processes length (d), number of branching points (e), and mean process length (f). Scalebar: 50 µm. ∆ = males, ○ = females. Data expressed as mean ± SD, two-way ANOVA, Sidak’s multiple comparisons test performed for all statistical analyses. *P < 0.05, **P < 0.01. ***P < 0.001. No other statistical comparisons are significant unless indicated.
title: ÐÐµÑ Ð°Ð½Ð¸Ð·Ð¼Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐµÑÐ¸Ð½ Ð² ÑÐ³Ð»Ð¾Ð²ÑÑ Ð·Ð¾Ð½Ð°Ñ ÐºÐ¸ÑÐ¿Ð¸ÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð¸ÑÐ¾Ð²ÐºÐ¸
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐ¸ÑÐ¾Ð²ÑÐµÐ½ÐºÐ¾, ÐÐ°Ð´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¡ÑÐµÐ½Ñ
ÐÐ¸ÑÐ¿Ð¸ÑÐ½Ð°Ñ ÐºÐ»Ð°Ð´ÐºÐ°
Ð¼Ð½Ð¾Ð³Ð¾ÑÐ»Ð¾Ð¹Ð½ÑÐµ ÑÑÐµÐ½Ñ
ÑÑÐµÑÐ¸Ð½Ñ Ð² Ð½Ð°ÑÑÐ¶Ð½ÑÑ ÐºÐ»Ð°Ð´ÐºÐ°Ñ
Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð² ANSYS
Ð»Ð¸ÑÐµÐ²Ð¾Ð¹ ÑÐ»Ð¾Ð¹
Ð¼ÐµÑ Ð°Ð½Ð¸Ð·Ð¼Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐµÑÐ¸Ð½
ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÐµ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ð¸ Ð¾Ð±ÑÑÑÐ½ÑÑÑÑÑ Ð¿ÑÐ¸ÑÐ¸Ð½Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð²ÑÐµÐ¶Ð´ÐµÐ½Ð¸Ð¹ Ð² Ð»Ð¸ÑÐµÐ²Ð¾Ð¼ ÑÐ»Ð¾Ðµ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ»Ð¾Ð¹Ð½ÑÑ Ð½Ð°ÑÑÐ¶Ð½ÑÑ ÑÑÐµÐ½ Ð¸Ð· ÐºÐ¸ÑÐ¿Ð¸ÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð¸ÑÐ¾Ð²ÐºÐ¸ Ð½Ð° ÐºÐ¾Ð½ÐºÑÐµÑÐ½Ð¾Ð¼ Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð² Ð³. Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ðµ. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð·Ð°ÑÐ¸ÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ Ð¿ÑÐ¸ Ð¾Ð±ÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¿Ð¾Ð²ÑÐµÐ¶Ð´ÐµÐ½Ð¸Ñ ÑÐ°ÑÐ°Ð´Ð¾Ð². ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð½Ð°ÑÑÐ¶Ð½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ Ð¸Ð· ÐºÐ¸ÑÐ¿Ð¸ÑÐ½Ð¾Ð¹ ÐºÐ»Ð°Ð´ÐºÐ¸ Ñ ÑÑÐµÑÐ¾Ð¼ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½Ð¾-Ð²Ð»Ð°Ð¶Ð½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¹ Ð¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð´ÐµÑÐµÐºÑÐ½ÑÑ ÑÑÐ°Ð³Ð¼ÐµÐ½ÑÐ¾Ð² Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ ANSYS, Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐ¸Ð¼ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¾Ð¼ Ð¸Ñ Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐµÐ¼. ÐÐ¾ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð²ÑÐ´Ð°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ ÑÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð·Ð°ÑÐ¸ÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¿Ð¾Ð²ÑÐµÐ¶Ð´ÐµÐ½Ð¸Ð¹ Ð¸ Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÐµÐ¹ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾Ð¹ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ Ð½Ð°ÑÑÐ¶Ð½ÑÑ ÑÑÐµÐ½, Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐ¸Ð¼ ÑÑÐµÑÐ¾Ð¼ Ð´Ð°Ð½Ð½ÑÑ Ð½ÐµÐ´Ð¾ÑÐ°Ð±Ð¾ÑÐ¾Ðº Ð² Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸, ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ðµ Ð¸ ÑÐµÐ¼Ð¾Ð½ÑÐµ Ð½Ð°ÑÑÐ¶Ð½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ Ð¸Ð· ÐºÐ¸ÑÐ¿Ð¸ÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð¸ÑÐ¾Ð²ÐºÐ¸ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ»Ð¾Ð¹Ð½ÑÑ Ð¾Ð³ÑÐ°Ð¶Ð´Ð°ÑÑÐ¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹.
description: In master's thesis explained causes of formation of damage in the outer masonry of multilayer walls on the real object in the city of St. Petersburg. As a result of visual inspection revealed characteristic damages in the outer masonry. Was performed the calculation of the outer layer of brickwork given temperature effect. Modeling defective fragments in the ANSYS program, followed by an analysis of their deformed schemes. According to the results of the studies issued recommendations to address registered damage and safe operation the exterior walls. Taking into account the characteristic lesions to be considered these flaws in the design, construction and repair of the outer masonry of multilayer walls.
Geodesic structure of a rotating regular black hole
Creators: name: Bautista-Olvera, Brandon
name: Degollado, Juan Carlos
name: German, Gabriel
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the dynamics of particles around a rotating regular black hole. In particular we focus on the effects of the characteristic length parameter of the spinning black hole on the motion of the particles by solving the equation of orbital motion. We have found that there is a fourth constant of motion that determines the dynamics of orbits out the equatorial plane similar as in the Kerr black hole. Through detailed analyses of the corresponding effective potentials for massive particles the possible orbits are numerically simulated. A comparison with the trajectories in a Kerr spacetime shows that the differences appear when the black holes rotate slowly for large values of the characteristic length parameter.
description: 18 pages, 16 figures
The isotropic-to-nematic transition in confined liquid crystals : an essentially non-universal phenomenon
Creators: name: Fish, J. M.
name: Vink, R. L. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Computer simulations are presented of the isotropic-to-nematic transition in a liquid crystal confined between two parallel plates a distance H apart. The plates are neutral and do not impose any anchoring on the particles. Depending on the shape of the pair potential acting between the particles, we find that the transition either changes from first-order to continuous at a critical film thickness H=Hx, or that the transition remains first-order irrespective of H. This demonstrates that the isotropic-to-nematic transition in confined geometry is not characterized by any universality class, but rather that its fate is determined by microscopic details. The resulting capillary phase diagrams can thus assume two topologies: one where the isotropic and nematic branches of the binodal meet at H=Hx, and one where they remain separated. For values of H where the transition is strongly first-order the shift DT of the transition temperature is in excellent agreement with the Kelvin equation. Not only is the relation DT~1/H recovered but also the prefactor of the shift is in quantitative agreement with the independently measured bulk latent heat and interfacial tension.
description: To appear in Phys. Rev. E
title: ÐÐ½Ð¶ÐµÐ½ÐµÑÐ½Ð°Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ° Ð¿Ð¾ÑÐµÐ»ÐºÐ° Ð² ÐÑÑÐºÐ¸Ð½ÑÐºÐ¾Ð¼ ÑÐ°Ð¹Ð¾Ð½Ðµ Ð³Ð¾ÑÐ¾Ð´Ð° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ð°
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐµÑÑÑÐµÐ²Ð°, 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: 2017
Subjects: ÑÐµÐºÑÐµÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð·Ð¾Ð½Ð°
Ð²Ð¾Ð´Ð¾Ð¿Ð¾Ð½Ð¸Ð¶ÐµÐ½Ð¸Ðµ
Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½Ð°Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ°

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿Ð¾ÑÐµÐ»Ð¾Ðº Â«ÐÐµÑÐµÐ·Ð¾Ð²Ð°Ñ ÑÐ¾ÑÐ°Â», ÑÐ°ÑÐ¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÐ¹ Ð² ÐÑÑÐºÐ¸Ð½ÑÐºÐ¾Ð¼ ÑÐ°Ð¹Ð¾Ð½Ðµ Ð³. Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ð°. ÐÐ° Ð¿ÑÐµÐ´Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¹ ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ð·Ð°Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ñ: 54 Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»ÑÐ½ÑÑ Ð¶Ð¸Ð»ÑÑ ÑÑÐ°ÑÑÐºÐ°, 28 ÑÑÐ°ÑÑÐºÐ¾Ð² ÑÐ°ÑÐ½ÑÐ°ÑÑÐ¾Ð², Ð°Ð´Ð¼Ð¸Ð½Ð¸ÑÑÑÐ°ÑÐ¸Ð²Ð½Ð¾-Ð±ÑÑÐ¾Ð²Ð¾Ð¹ ÑÐµÐ½ÑÑ Ð¸ ÑÐµÐºÑÐµÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð·Ð¾Ð½Ð°, Ð²ÐºÐ»ÑÑÐ°ÑÑÐ°Ñ Ð¾ÑÐºÑÑÑÑÐµ Ð¿Ð»Ð¾ÑÐºÐ¾ÑÑÐ½ÑÐµ ÑÐ¿Ð¾ÑÑÐ¸Ð²Ð½ÑÐµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ, Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð²Ð¾Ð´Ð¾ÐµÐ¼ Ð¸ Ð¿Ð°ÑÐº. ÐÐ»Ñ Ð¿Ð¾ÑÐµÐ»ÐºÐ° Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½ ÑÐ»Ð¾Ð¶Ð½ÑÐ¹ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½ÑÑ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹, Ð²ÐºÐ»ÑÑÐ°ÑÑÐ¸Ð¹ ÑÑÐµÐ¼Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐµÐ»ÑÐµÑÐ° ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ð´Ð»Ñ Ð¾ÑÐ²Ð¾Ð´Ð° Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð´, Ð° ÑÐ°ÐºÐ¶Ðµ Ð²Ð¾Ð´Ð¾Ð¿Ð¾Ð½Ð¸Ð¶ÐµÐ½Ð¸Ðµ ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ð² Ð¼ÐµÑÑÐ°Ñ, Ð³Ð´Ðµ ÑÑÐ¾Ð²ÐµÐ½Ñ Ð³ÑÑÐ½ÑÐ¾Ð²ÑÑ Ð²Ð¾Ð´ Ð½Ð°ÑÐ¾Ð´Ð¸ÑÑÑ Ñ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ¸ Ð·ÐµÐ¼Ð»Ð¸. ÐÑÐ¾ÐµÐºÑ Ð¿Ð¾ Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐµ ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ð¿Ð¾ÑÑÐ»ÐºÐ° Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½ Ð² ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ð¸ Ñ Ð·Ð°Ð´Ð°Ð½Ð¸ÐµÐ¼ Ð½Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼Ð¸ Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐ¸Ñ Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½ÑÑ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ¾Ð² Ð² ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ðµ.
Il tetraquark che fa le stelle strane
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

Confermata dall’esperimento LHCb al CERN l’esistenza di una pesante particella che potrebbe essere un tetraquark, ovvero composta da quattro quark. Notevoli le implicazioni sulla struttura interna di oggetti celesti superdensi, come le stelle di neutroni
Duality for nonlinear simply laced groups
Creators: name: Adams, Jeffrey
name: Trapa, Peter E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E45

description: Let G be a nonlinear double cover of the real points of a connected reductive complex algebraic group with simply laced root system. We establish a uniform character multiplicity duality theory for the category of Harish-Chandra modules for G.
description: 51 pages, 1 figure
title: Weakly Supervised Convolutional Dictionary Learning with Shared and Discriminative Components for Classification
Creators: name: Chen, Hao
name: Wu, Yusen
name: Tan, Dayuan
Publisher: name: Maryland Shared Open Access Repository
Year: 2025

description: In today's data-driven landscape spanning finance, government, and healthcare sectors, the exponential growth of information necessitates robust solutions for secure storage, efficient dissemination, and fine-grained access control. Convolutional dictionary learning emerges as a powerful approach for extracting meaningful representations from complex data. This paper presents a novel weakly supervised convolutional dictionary learning framework that incorporates both shared and discriminative components for classification tasks. Our approach leverages limited label information to learn dictionaries that capture common patterns across classes while simultaneously highlighting class-specific features. By decomposing the learned representations into shared and discriminative parts, we enhance both feature interpretability and classification performance. Extensive experiments across multiple datasets demonstrate that our method outperforms state-of-the-art approaches, particularly in scenarios with limited labeled data. The proposed framework offers a promising solution for applications requiring both effective feature extraction and accurate classification in weakly supervised settings.
Il lato oscuro della distanza
Creators: Giulia Bonelli
Publisher: name: Media Inaf
Year: 2014

Il team della NASA ha annunciato che il telescopio spaziale Hubble è ora in grado di misurare la distanza degli oggetti con una precisione 10 volte maggiore rispetto al passato. Il premio Nobel per la fisica Adam Riess, che ha contribuito al progetto, afferma di voler ora utilizzare i nuovi dati sulle distanze spaziali per svelare il mistero dell’energia oscura
L’emisfero sud nel futuro del CTA
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2014

I due siti sono stati giudicati i migliori tra quelli proposti dalle nazioni interessate e accuratamente valutati sia dalla collaborazione CTA, sia da un comitato indipendente formato da super-esperti nella scelta di siti per telescopi ottici
Due orbite sono troppo poche…
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2014

Perché l'orbita del planetoide 2012 VP113, recentemente scoperto oltre Nettuno, è così particolare? E' stata davvero un'oscura super-Terra a modellarne l'orbita? Facciamo chiarezza con Giovanni Valsecchi, esperto di dinamica planetaria dell'INAF
Gamma ray emission and stochastic particle acceleration in galaxy clusters
Creators: name: Brunetti, G.
name: Blasi, P.
name: Cassano, R.
name: Gabici, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: FERMI (formely GLAST) will shortly provide crucial information on relativistic particles in galaxy clusters. We discuss non-thermal emission in the context of general calculations in which relativistic particles (protons and secondary electrons due to proton-proton collisions) interact with MHD turbulence generated in the cluster volume during cluster mergers. Diffuse cluster-scale radio emission (Radio Halos) and hard X-rays are produced during massive mergers while gamma ray emission, at some level, is expected to be common in galaxy clusters.
description: 4 pages, 2 Figure, proc. of the 4th Heidelberg International Symposium on High Energy Gamma-ray Astronomy
E luce fu, nel cielo notturno
Creators: Matteo De Giuli
Publisher: name: Media Inaf
Year: 2014

Un nuovo studio pubblicato sul Journal of Geophysical Research indaga le cause dell'aumento delle nubi nottilucenti registrato negli ultimi anni, cercando di capire in che modo questi fenomeni sono correlati con i cambiamenti atmosferici e climatici del nostro pianeta
Flud: a hybrid crowd-algorithm approach for visualizing biological networks
Creators: name: Bharadwaj, Aditya
name: Gwizdala, David
name: Kim, Yoonjin
name: Luther, Kurt
name: Murali, T. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Modern experiments in many disciplines generate large quantities of network (graph) data. Researchers require aesthetic layouts of these networks that clearly convey the domain knowledge and meaning. However, the problem remains challenging due to multiple conflicting aesthetic criteria and complex domain-specific constraints. In this paper, we present a strategy for generating visualizations that can help network biologists understand the protein interactions that underlie processes that take place in the cell. Specifically, we have developed Flud, an online game with a purpose (GWAP) that allows humans with no expertise to design biologically meaningful graph layouts with the help of algorithmically generated suggestions. Further, we propose a novel hybrid approach for graph layout wherein crowdworkers and a simulated annealing algorithm build on each other's progress. To showcase the effectiveness of Flud, we recruited crowd workers on Amazon Mechanical Turk to lay out complex networks that represent signaling pathways. Our results show that the proposed hybrid approach outperforms state-of-the-art techniques for graphs with a large number of feedback loops. We also found that the algorithmically generated suggestions guided the players when they are stuck and helped them improve their score. Finally, we discuss broader implications for mixed-initiative interactions in human computation games.
description: This manuscript is currently under review
title: Ð¡Ð¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð½Ð½Ð¾Ð²Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² ÑÐµÐ³Ð¸Ð¾Ð½Ðµ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ð°)
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: Ð¡Ð¸Ð´Ð¾ÑÐ¾Ð²Ð°, Ð®Ð»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: 2017
Subjects: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³, Ð³Ð¾ÑÐ¾Ð´
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Alla conquista dell’asteroide
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

La NASA ha cominciato la costruzione della navicella OSIRIS-REx che incontrerà l'asteroide Bennu nel 2018. L'obiettivo è, oltre a studiarne la superficie, raccogliere campioni di circa 60 grammi ciascuno da riportare poi sulla Terra nel 2023
M. Kontsevich's graph complexes and universal structures on graded symplectic manifolds
Creators: name: Morand, Kevin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In the formulation of his celebrated Formality conjecture, M. Kontsevich introduced a universal version of the deformation theory for the Schouten algebra of polyvector fields on affine manifolds. This universal deformation complex takes the form of a differential graded Lie algebra of graphs, denoted $\mathsf{fGC}_2$, together with an injective morphism towards the Chevalley-Eilenberg complex associated with the Schouten algebra. The latter morphism is given by explicit local formulas making implicit use of the supergeometric interpretation of the Schouten algebra as the algebra of functions on a graded symplectic manifold of degree $1$. The ambition of the present work is to generalise Kontsevich's construction to graded symplectic manifolds of arbitrary degree $n\geq1$. The corresponding graph model is given by the full Kontsevich graph complex $\mathsf{fGC}_d$ where $d=n+1$ stands for the dimension of the associated AKSZ type $σ$-model. This generalisation is instrumental to classify universal structures on graded symplectic manifolds. In particular, the zeroth cohomology of the full graph complex $\mathsf{fGC}_{d}$ is shown to act via $\mathsf{Lie}_\infty$-automorphisms on the algebra of functions on graded symplectic manifolds of degree $n$. This generalises the known action of the Grothendieck-Teichmüller algebra $\mathfrak{grt}_1\simeq H^0(\mathsf{fGC}_2)$ on the space of polyvector fields. This extended action can in turn be used to generate new universal deformations of Hamiltonian functions, generalising Kontsevich flows on the space of Poisson manifolds to differential graded manifolds of higher degrees. As an application of the general formalism, universal deformations of Courant algebroids via trivalent graphs are presented.
description: 40 pages. Presentation improved and supplementary material added. Matches published version
The detection of relativistic corrections in cosmological N-body simulations
Creators: name: Eckmann, Jean-Pierre
name: Hassani, Farbod
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Cosmological N-body simulations are done on massively parallel computers. This necessitates the use of simple time integrators, and, additionally, of mesh-grid approximations of the potentials. Recently, Adamek et al. (2015); Barrera-Hinojosa et al. (2019) have developed general relativistic N-body simulations to capture relativistic effects mainly for cosmological purposes. We therefore ask whether, with the available technology, relativistic effects like perihelion advance can be detected numerically to a relevant precision. We first study the spurious perihelion shift in the Kepler problem, as a function of the integration method used, and then as a function of an additional interpolation of forces on a 2-dimensional lattice. This is done for several choices of eccentricities and semi-major axes. Using these results, we can predict which precisions and lattice constants allow for a detection of the relativistic perihelion advance in N-body simulation. We find that there are only small windows of parameters -- such as eccentricity, distance from the central object and the Schwarzschild radius -- for which the corrections can be detected in the numerics.
description: 15 pages, 8 figures. Replaced with revised version accepted for publication in Celestial Mechanics and Dynamical Astronomy; data available at https://zenodo.org/record/7950670
Il tempo, la scienza e la fede
Creators: Davide Coero Borga
Publisher: name: Media Inaf
Year: 2014

Si è aperta la quarta edizione della Festa di Scienza e Filosofia. Tema di questa edizione Umano, Sensibile, Ignoto. Quattro le aree scientifiche e filosofiche su cui si articolerà lo svolgimento della Festa fino a domenica prossima: Scienza e Fede, Cervello e Mente, Semplice e Complesso, Il Tempo
The effects of r-process heating on fall-back accretion in compact object mergers
Creators: name: Metzger, B. D.
name: Arcones, A.
name: Quataert, E.
name: Martinez-Pinedo, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the effects of r-process nucleosynthesis on fall-back accretion in neutron star(NS)-NS and black hole-NS mergers, and the resulting implications for short-duration gamma-ray bursts (GRBs). Though dynamically important, the energy released during the r-process is not yet taken into account in merger simulations. We use a nuclear reaction network to calculate the heating (due to beta-decays and nuclear fission) experienced by material on the marginally-bound orbits nominally responsible for late-time fall-back. Since matter with longer orbital periods t_orb experiences lower densities, for longer periods of time, the total r-process heating rises rapidly with t_orb, such that material with t_orb > 1 seconds can become completely unbound. Thus, r-process heating fundamentally changes the canonical prediction of an uninterrupted power-law decline in the fall-back rate dM/dt at late times. When the timescale for r-process to complete is > 1 second, the heating produces a complete cut-off in fall-back accretion after ~ 1 second; if robust, this would imply that fall-back accretion cannot explain the late-time X-ray flaring observed following some short GRBs. However, for a narrow, but physically plausible, range of parameters, fall-back accretion can resume after ~ 10 s, despite having been strongly suppressed for ~ 1-10 s after the merger. This suggests the intriguing possibility that the gap observed between the prompt and extended emission in short GRBs is a manifestation of r-process heating.
description: 7 pages; 4 figures; submitted to MNRAS
Constructing $p,n$-forms from $p$-forms via the Hodge star operator and the exterior derivative
Creators: name: Peng, Jun-Jin
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we aim to explore the properties and applications on the operators consisting of the Hodge star operator together with the exterior derivative, whose action on an arbitrary $p$-form field in $n$-dimensional spacetimes makes its form degree remain invariant. Such operations are able to generate a variety of $p$-forms with the even-order derivatives of the $p$-form. To do this, we first investigate the properties of the operators, such as the Laplace-de Rham operator, the codifferential and their combinations, as well as the applications of the operators in the construction of conserved currents. On basis of two general p-forms, then we construct a general n-form with higher-order derivatives. Finally, we propose that such an n-form could be applied to define a generalized Lagrangian with respect to a p-form field according to the fact that it incudes the ordinary Lagrangians for the $p$-form and scalar fields as special cases.
description: 23 pages, two tables, accepted by Communications in Theoretical Physics