cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bianchi Cosmologies with Anisotropic Matter: Locally Rotationally Symmetric Models
Creators: name: Calogero, Simone
name: Heinzle, J. Mark
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dynamics of cosmological models with isotropic matter sources (perfect fluids) is extensively studied in the literature; in comparison, the dynamics of cosmological models with anisotropic matter sources is not. In this paper we consider spatially homogeneous locally rotationally symmetric solutions of the Einstein equations with a large class of anisotropic matter models including collisionless matter (Vlasov), elastic matter, and magnetic fields. The dynamics of models of Bianchi types I, II, and IX are completely described; the two most striking results are the following: (i) There exist matter models, compatible with the standard energy conditions, such that solutions of Bianchi type IX (closed cosmologies) need not necessarily recollapse; there is an open set of forever expanding solutions. (ii) Generic type IX solutions associated with a matter model like Vlasov matter exhibit oscillatory behavior toward the initial singularity. This behavior differs significantly from that of vacuum/perfect fluid cosmologies; hence "matter matters". Finally, we indicate that our methods can probably be extended to treat a number of open problems, in particular, the dynamics of Bianchi type VIII and Kantowski-Sachs solutions.
description: 64 pages, 19 Figures
title: Ð Ð°ÑÑÐµÑÐ½Ð¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð±Ð¾ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð³Ð¸Ð»ÑÐ·Ñ ÑÐ¸Ð»Ð¸Ð½Ð´ÑÐ° Ð²ÑÑÐ¾ÐºÐ¾ÑÐ¾ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÑÐ´Ð¾Ð²Ð¾Ð³Ð¾ Ð´Ð¸Ð·ÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ ÑÐ°Ð·Ð¼ÐµÑÐ½Ð¾ÑÑÑÑ 15/17,5
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Ð°Ð¿ÐºÐ¸Ð½, ÐÐ¼Ð¸ÑÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: Ð¡ÑÐ´Ð¾Ð²ÑÐµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ð¸ Ð´Ð¸Ð·ÐµÐ»Ñ
Ð¢ÐµÐ¿Ð»Ð¾Ð¾Ð±Ð¼ÐµÐ½
ÐÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÐµ Ð¼Ð°ÑÐ¸Ð½Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½ÑÐµ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»ÑÐ½ÑÐµ
Ð³Ð¸Ð»ÑÐ·Ð° ÑÐ¸Ð»Ð¸Ð½Ð´ÑÐ°
ÑÐ¸ÑÑÐµÐ¼Ð° Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐ½Ð¾Ð³Ð¾ Ð¾Ñ Ð»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ
cylinder liner
liquid cooling system

description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð³Ð¸Ð´ÑÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ Ð¸ ÑÐµÐ¿Ð»Ð¾Ð¾Ð±Ð¼ÐµÐ½Ð° Ð² Ð·Ð°ÑÑÐ±Ð°ÑÐµÑÐ½Ð¾Ð¼ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²Ðµ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ Ð³Ð¸Ð»ÑÐ·Ñ ÑÐ¸Ð»Ð¸Ð½Ð´ÑÐ° Ð²ÑÑÐ¾ÐºÐ¾ÑÐ¾ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð¸Ð·ÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. Ð Ð°Ð±Ð¾ÑÐ° Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð² ÑÐµÐ±Ñ Ð¾Ð±Ð·Ð¾ÑÐ½ÑÑ ÑÐ°ÑÑÑ, Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐ°ÑÑÐµÑÐ½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº Ð¸ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾ ÑÐ°Ð±Ð¾ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ ÑÐºÐ°Ð·Ð°Ð½Ð½ÑÑ Ð´ÐµÑÐ°Ð»ÐµÐ¹, ÑÐ°ÑÑÑÑ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ process2000, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÑ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð³Ð¸Ð»ÑÐ·Ñ ÑÐ¸Ð»Ð¸Ð½Ð´ÑÐ° Ð² Ð¿Ð°ÐºÐµÑÐµ ÐÐÐÐÐÐ¡ 3D, ÑÐ°ÑÑÑÐ¸ÑÐ°Ð½Ð½ÑÑ Ð² Ð¿Ð°ÐºÐµÑÐµ Ansys Workbench.
description: The paper presents the results of the study of fluid flow and heat transfer in highly accelerated diesel cylinder liner's liquid cooling cavity. This work includes overview, description of calculation methods and conclusions about the performance of those parts, calculation engine using program Process2000, the developed cylinder liner modeled in KOMPAS 3D package, calculating in Flow Simulation - Ansys Workbench package.
Invariants of Relative Right and Contact Equivalences
Creators: name: Ahmed, Imran
name: Ruas, Maria Aparecida Soares
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: Primary 14E05, 32S30, 14L30, Secondary 14J17, 16W22

description: We study holomorphic function germs under equivalence relations that preserve an analytic variety. We show that two quasihomogeneous polynomials, not necessarily with isolated singularities, having isomorphic relative Milnor algebras are relative right equivalent. Under the condition that the module of vector fields tangent to the variety is finitely generated, we also show that the relative Tjurina algebra is a complete invariant for the classification of arbitrary function germs with respect to the relative contact equivalence. This is the relative version of a well known result by Mather and Yau.
description: 11 pages. arXiv admin note: substantial text overlap with arXiv:0909.5429
title: Ð ÐµÑÐµÐ²Ð¾Ð¹ Ð¿Ð¾ÑÑÑÐµÑ Ð³Ð»Ð°Ð²Ð½ÑÑ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð¶ÐµÐ¹ ÑÐ¸ÐºÐ»Ð° ÑÐ¾Ð¼Ð°Ð½Ð¾Ð² Ð¸ ÑÐ°ÑÑÐºÐ°Ð·Ð¾Ð² Ð. Ð. ÐÑÐ´Ñ Ð°ÑÐ·Ð° Ð¾ ÐÐ¶Ð¸Ð²ÑÐµ Ð¸ ÐÑÑÑÐµÑÐµ
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: Ð¢Ð¸ÑÐ¾Ð½Ð¾Ð²Ð°, ÐÐ°ÑÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: ÑÐµÑÐµÐ²Ð¾Ð¹ Ð¿Ð¾ÑÑÑÐµÑ
ÑÐµÑÑ
ÐÑÐ´Ñ Ð°ÑÐ·
speech portrait
speech
wodehouse

description: ÐÐ°Ð½Ð½Ð°Ñ Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÑÐ° Ð³Ð»Ð°Ð²Ð½ÑÑ Ð³ÐµÑÐ¾ÐµÐ² ÑÐ¾Ð¼Ð°Ð½Ð¾Ð² Ð¸ ÑÐ°ÑÑÐºÐ°Ð·Ð¾Ð² Ð.Ð. ÐÑÐ´ÑÐ°ÑÐ·Ð° Ð¾ ÐÐ¶Ð¸Ð²ÑÐµ Ð¸ ÐÑÑÑÐµÑÐµ. Ð¦ÐµÐ»ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÐµÐ´ÑÑÐ² ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÑÐ° ÐÐ¶Ð¸Ð²ÑÐ° Ð¸ ÐÑÑÑÐµÑÐ°. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÐ»Ð¸ÑÑ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð¼ÐµÑÐ¾Ð´Ñ: ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ Ð¾Ð±Ð¾Ð±ÑÐµÐ½Ð¸Ðµ Ð½Ð°ÑÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ Ð¸ Ð»Ð¸Ð½Ð³Ð²Ð¾ÑÑÐ¸Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¸Ð¹ Ð.Ð. ÐÑÐ´ÑÐ°ÑÐ·Ð°. ÐÐ°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð¼ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾ÑÐ»ÑÐ¶Ð¸Ð»Ð¸ ÑÑÐ¸ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¸Ñ: ÑÐ±Ð¾ÑÐ½Ð¸Ðº ÑÐ°ÑÑÐºÐ°Ð·Ð¾Ð² âCarry On, Jeevesâ, ÑÐ¾Ð¼Ð°Ð½Ñ âRight Ho, Jeevesâ Ð¸ âThe Code of the Woostersâ. ÐÑÐ»Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÑÐ¾Ð²Ð½Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¸ ÑÐ¿Ð¾ÑÐ¾Ð±Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÐµÑÐµÐ²Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÑÐ°, Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð° ÑÑÐµÐ¼Ð° Ð°Ð½Ð°Ð»Ð¸Ð·Ð° ÑÐµÑÐ¸ Ð³ÐµÑÐ¾ÐµÐ² Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð° ÑÐµÑÑ Ð´Ð°Ð½Ð½ÑÑ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð¶ÐµÐ¹ Ð¿Ð¾ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½Ð¾Ð¹ ÑÑÐµÐ¼Ðµ. ÐÐ¾Ð»ÑÑÐµÐ½Ð½ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¼Ð¾Ð³ÑÑ Ð±ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð¿ÑÐ¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐ²Ð¾ÑÑÐµÑÑÐ²Ð° Ð.Ð. ÐÑÐ´ÑÐ°ÑÐ·Ð°, ÑÑÐ¸Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¾Ð¼ Ð°Ð½Ð°Ð»Ð¸Ð·Ðµ ÐµÐ³Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¸Ð¹ Ð¸ ÑÐ¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¸ ÑÐµÑÐµÐ²ÑÑ Ð¿Ð¾ÑÑÑÐµÑÐ¾Ð² Ð´ÑÑÐ³Ð¸Ñ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐ½ÑÑ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð¶ÐµÐ¹.
description: This graduation work is devoted to studying the speech portraits of the main characters of the novels and stories about Jeeves and Woosterby P.G. Wodehouse. The purpose of this work is to study and analyze the methods of creating the speech portraits of Jeeves and Wooster. Methods of study include the theoretical analysis and compilation of the scientific works and the linguostylistic analysis of the novels by P.G. Wodehouse. The material of the diploma paper is three works: the collection of stories âCarry On, Jeevesâ, the novels âRight Ho, Jeevesâ and âThe Code of the Woostersâ. This graduation work studies the levels of analysis and methods of creating a speech portrait, offers the plan for the analysis of character's speech and studies the speech in accordance with this plan. The results of the work can be used for studying the works of P.G. Wodehouse, stylistic analysis of his works and creating speech portraits of different literary characters.
title: The Association Between Ghost Gun Usage and Neighborhood Disadvantage
Creators: name: Petersen, Anna
Publisher: name: Digital Repository at the University of Maryland
Year: 2025
Subjects: subject: Department of Criminology and Criminal Justice
subject: Department of Criminology and Criminal Justice Honors Program
subject: CCJS
subject: ghost guns
subject: firearms
subject: privately made firearms
subject: gun violence
subject: neighborhood disadvantage

description: This study examines the relationship between Privately Made Firearm (PMF) usage and multiple characteristics of neighborhood disadvantage in a large metropolitan city. PMFs, also known as ghost guns, are unserialized firearms typically ordered as parts and constructed by hand at home. Since they are unserialized, they are untraceable by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). Thus, PMFs are frequently owned by individuals who are unable to purchase a firearm through legitimate means. Police data containing PMF recovery incidents, categorized as criminal or non-criminal incidents, from 2020 to 2023 were obtained and mapped onto census data to find the PMF rate per 1,000 people in each census tract. A linear regression analysis was conducted to determine neighborhood disadvantage from 2015 to 2019 was predictive of PMF use. Neighborhood disadvantage was measured through unemployment rate, poverty rate, and rate of residents over 25 without a high school diploma. Results show that higher neighborhood disadvantage is associated with a higher PMF rate per census tract for all PMF recovery incidents, criminal incidents alone, and non-criminal incidents. This research provides important contributions to firearm research and demonstrates that PMF use is associated with neighborhood disadvantage in the same way as violent crime.
title: Performance evaluation for software migration
Creators: name: Al-Azzoni, Issam
name: Zhang, Lei
name: Down, Douglas G.
Publisher: name: ACM
Year: 2011

description: Advances in technology and economical pressure have forced many organizations to consider the migration of their legacy systems to newer platforms.Legacy systems typically provide mission critical services vital for an organization's business needs. These systems are usually very large and highly complex with little or no documentation. Furthermore, fewer people can understand and maintain these systems. While several techniques exist to verify the functionality of the migrated system, the literature is still lacking methods to effectively assess the performance impact of software migration. In this paper, we propose a new method designed specifically to address performance evaluation in software migration projects. The new method uses simple models and incorporates techniques for model validation and resource demand mapping for performance evaluation and capacity planning.
La Via Lattea ruba idrogeno alle piccole vicine
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

Gli astronomi hanno scoperto che le galassie vicine di piccola taglia sono prive di quel gas fondamentale per sostenere il processo di formazione stellare e che la colpa è proprio della nostra Galassia. Il commento di Michele Bellazzini (INAF-Osservatorio Astronomico di Bologna)
Duality in inhomogeneous random graphs, and the cut metric
Creators: name: Janson, Svante
name: Riordan, Oliver
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 05C80, 60C05

description: The classical random graph model $G(n,λ/n)$ satisfies a `duality principle', in that removing the giant component from a supercritical instance of the model leaves (essentially) a subcritical instance. Such principles have been proved for various models; they are useful since it is often much easier to study the subcritical model than to directly study small components in the supercritical model. Here we prove a duality principle of this type for a very general class of random graphs with independence between the edges, defined by convergence of the matrices of edge probabilities in the cut metric.
description: 13 pages
Lower Cambrian archaeocyatha from the Yukon Territory
Creators: name: Kawase, Yoshio
Publisher: name: University of British Columbia
Year: 2012

description: Archaeocyatha from the Lower Cambrian of Wolf Lake and Quiet Lake areas in the Yukon Territory are described and illustrated. The fossils occur in carbonate rocks and are well preserved. Much of the necessary structural detail of the fossils is clearly observed in thin-sections and on polished surfaces of the specimens. The collection contains twenty-three species, twelve of which are new species. The new species described are: Ajacicyathus yukonensis, Coscinocyathus multiporus. Coseinocyathus cassiariensis, Coscinocyathus inequivallug, Coscinocyathus serratus, Coscinocyathus veronicus, Coscinocyathus tubicornus, Carinacyathus perforatus, Pyenoidocyathus solidus, Loculicyathus elliptieus, Metacoscinus poolensis, and Claruscyathus ketzaensis. The genera Carinacyathus and Loculicyathus are reported for the first time in North America. The Yukon fauna is dominated by Coscinocyathidae and Pycnoidocyathidae, showing close relationship to faunae in the Cordilleran region of British Columbia. It also shows relationship to Siberian and Australian faunae. This fauna is very different from the archaeocyathid assemblages in Nevada and California, where the dominant forms are Ethmophyllidae and Ajacicyathiclae. Arehaeocyatha have been instrumental in determining the age of rocks underlying a large area of the Yukon Territory.
Dai un nome al sito J!
Creators: Livia Giacomini
Publisher: name: Media Inaf
Year: 2014

Si apre il concorso ESA, organizzato in Italia da ASI e INAF, per dare un nome al punto "J", il luogo della cometa 67P/C-G dove si poserà il lander Philae di Rosetta il 12 novembre prossimo.  Fino alle 23.59 del 22 ottobre 2014 è possibile suggerire un nome per vincere un viaggio per partecipare al landing al centro spaziale ESOC in Germania
title: Ð Ð°ÑÑÐµÑ Ð¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ñ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÐ¼Ð¸ Ð¼Ð°Ð³Ð½Ð¸ÑÐ°Ð¼Ð¸ Ð¸ ÑÐ¸ÑÐ»Ð¾Ð¼ Ð¿Ð°Ð·Ð¾Ð² Ð½Ð° Ð¿Ð¾Ð»ÑÑ Ð¸ ÑÐ°Ð·Ñ q<1
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐ¾Ð½Ð´Ð¸Ð½, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: ÐÐµÐ½ÐµÑÐ°ÑÐ¾ÑÑ ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð½ÑÐµ
ÐÐ°Ð³Ð½Ð¸ÑÑ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÐµ
ÐÐ°Ð³Ð½Ð¸ÑÐ½Ð¾Ðµ Ð¿Ð¾Ð»Ðµ
ÐÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð¼ÐµÑÐ¾Ð´

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ¸Ð½ÑÑÐ¾Ð½Ð½ÑÐµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ñ Ð²Ð¾Ð·Ð±ÑÐ¶Ð´ÐµÐ½Ð¸ÐµÐ¼ Ð¾Ñ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÑ Ð¼Ð°Ð³Ð½Ð¸ÑÐ¾Ð² Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð´ÑÐ¾Ð±Ð½Ð¾-Ð·ÑÐ±ÑÐ¾Ð²Ð¾Ð¹ Ð¾Ð±Ð¼Ð¾ÑÐºÐ¾Ð¹. Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ ÑÐ°ÑÑÐµÑÐ° ÑÑÐµÑÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð½ÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ñ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÐ¼Ð¸ Ð¼Ð°Ð³Ð½Ð¸ÑÐ°Ð¼Ð¸ Ð½Ð° ÑÐ¾ÑÐ¾ÑÐµ Ð¸ Ð´ÑÐ¾Ð±Ð½Ð¾-Ð·ÑÐ±ÑÐ¾Ð²Ð¾Ð¹ Ð¾Ð±Ð¼Ð¾ÑÐºÐ¾Ð¹ Ð½Ð° ÑÑÐ°ÑÐ¾ÑÐµ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ñ Ð² Ð·Ð°Ð·Ð¾ÑÐµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¼Ð°ÑÐ¸Ð½Ñ. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð°ÐºÐµÑÐ° ElCut Ð²ÐµÑÑÐ¸Ð¸ 6.0 Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð³Ð°ÑÐ¼Ð¾Ð½Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÑÐ¸Ð²Ð¾Ð¹ Ð¸Ð½Ð´ÑÐºÑÐ¸Ð¸ Ð² Ð·Ð°Ð·Ð¾ÑÐµ ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ ÑÐ°Ð±Ð¾ÑÑ, Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¾Ð±Ð¾Ð±ÑÐµÐ½Ð¸Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð±ÑÐ»Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° ÑÐ°ÑÑÐµÑÐ° ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 20ÐºÐÑ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½ÑÐµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¼Ð°ÑÐ¸Ð½, Ð¸Ñ Ð´Ð¾ÑÑÐ¾Ð¸Ð½ÑÑÐ²Ð° Ð¸ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐºÐ¸.
description: The object of research is a synchronous motor with permanent magnet excitation with a fractional slot winding. The work is dedicated to the development of methods for calculating the three-phase synchronous motor with permanent magnets on the rotor and fractional slot winding on the stator. The simulation of the magnetic field in the air-gap of the electrical machine. Based on the finite element package ElCut 6.0 Fourier analysis performed in the air-gap curve induction motor. In progress the work, based on the aggregation of existing design methodologies, the program for calculating the motor power of 20kW was developed. Design features of this type of electrical machines, their advantages and disadvantages.
Ecco la TAC dell’universo teenager
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2014

Ricostruita da un team internazionale di ricercatori, fra i quali quattro astronomi dell’INAF, la struttura a tre dimensioni di una porzione di cosmo a tre miliardi di anni dal Big Bang. Vi s’intravede la distribuzione dell’idrogeno primordiale e della materia oscura
How a File Format led to a Crossword Scandal
Creators: name: Pwanson, Saul
Publisher: name: Zenodo
Year: 2019
Subjects: crossword
plagiarism
csvconf
format
xd

description: In 2016 I designed a plain-text file format for crossword puzzle data, and then spent a couple of months building a micro-data-pipeline, scraping tens of thousands of crosswords from various sources. Then, having all those crosswords in a simple format, I wanted to see if there were any common grid patterns--and discovered egregious plagiarism by a major crossword editor that had gone on for years. This talk covers the file format, data pipeline, and the design choices that aided rapid exploration; the evidence for the scandal, from the initial anomalies to the final damning visualization; and what it's like for a data project to get 15 seconds of fame.
Hawking temperature of Kerr-Newman-AdS black hole from tunneling
Creators: name: Ma, Zheng Ze
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the null-geodesic tunneling method of Parikh and Wilczek, we derive the Hawking temperature of a general four-dimensional rotating black hole. In order to eliminate the motion of $ϕ$ degree of freedom of a tunneling particle, we have chosen a reference system that is co-rotating with the black hole horizon. Then we give the explicit result for the Hawking temperature of the Kerr-Newman-AdS black hole from the tunneling approach.
description: 13 pages, Latex
Automorphisms of hyperelliptic modular curves $X_0(N)$ in positive characteristic
Creators: name: Kontogeorgis, Aristides
name: Yang, Yifan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14H37; 11F11; 11G20

description: We study the automorphism groups of the reduction $X_0(N) \times \bar{\mathbb{F}}_p$ of a modular curve $X_0(N)$ over primes $ p\nmid N$.
Senza metalli si accendono poche stelle
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2014

Due galassie, seppur ricche di idrogeno molecolare, sfornano stelle ad un ritmo assai basso. Secondo i ricercatori che le hanno studiate la colpa è della penuria, nel gas che le compone, di elementi chimici più pesanti dell'elio, i cosiddetti metalli. Il commento di Giovanni Cresci (INAF)
Alexandrov meets Lott--Villani--Sturm
Creators: name: Petrunin, Anton
Publisher: name: arXiv
Year: 2010
Subjects: subject: Metric Geometry (math.MG)
subject: Differential Geometry (math.DG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 53C23 (49Q20)

description: Here I show compatibility of two definition of generalized curvature bounds --- the lower bound for sectional curvature in the sense of Alexandrov and lower bound for Ricci curvature in the sense of Lott--Villani--Sturm.
description: 11 pages 1 figure
title: ÐÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð¾-Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐµÑ Ð° Ð¿Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²Ñ ÐºÐ¾Ð½Ð´Ð¸ÑÐµÑÑÐºÐ¸Ñ Ð¸Ð·Ð´ÐµÐ»Ð¸Ð¹ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð½Ð¾Ð¹ Ð¿Ð¸ÑÐµÐ²Ð¾Ð¹ ÑÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 2,5 ÑÐ¾Ð½Ð½Ñ Ð² ÑÑÑÐºÐ¸ Ð² ÐÑÐ±Ð¾ÑÐ³ÑÐºÐ¾Ð¼ ÑÐ°Ð¹Ð¾Ð½Ðµ Ð³. 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Ð°ÑÐ¸ÐµÐ½ÐºÐ¾, ÐÐ°Ð»ÐµÑ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: 2016
Subjects: ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ ÐºÐ¾Ð½Ð´Ð¸ÑÐµÑÑÐºÐ¸Ð¹ ÑÐµÑ
ÐºÐ¾Ð½Ð´Ð¸ÑÐµÑÑÐºÐ¸Ðµ Ð¸Ð·Ð´ÐµÐ»Ð¸Ñ

description: ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ð¾Ð²Ð¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ, Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÑÐµÑÑ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÑÑÐºÑÑÑÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¿Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÑÐµÐ¼Ð¾Ð³Ð¾ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, ÐµÐ³Ð¾ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²Ð¾ÑÐ½Ð¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ð¸.
Numerical Evaluation of Gauge Invariants for $a$-gauge Solutions in Open String Field Theory
Creators: name: Kishimoto, Isao
name: Takahashi, Tomohiko
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We evaluate gauge invariants (vacuum energy and gauge invariant overlap) for numerical classical solutions in cubic open string field theory under Asano-Kato's $a$-gauge fixing condition. We propose an efficient iterative procedure for solving the equations of motion so that the BRST invariance of the solutions is numerically ensured. The resulting gauge invariants are numerically stable and almost equal to those of Schnabl's tachyon vacuum solution in the well-defined region of a gauge parameter. These results provide further evidence that the numerical and analytical solutions are gauge equivalent.
description: 19 pages, 10 figures; v2:typos corrected, version to appear in PTP
Right Lung aplasia
Creators: name: Hamidi, Hidayatullah
Publisher: name: EURORAD
Year: 2015
Subjects: subject: Lung
subject: CT
subject: CT-Angiography
subject: Computer Applications-3D
subject: Contrast agent-intravenous
subject: Congenital

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 3 months
description: Clinical History: A three months old male child with respiratory distress and fever was sent to radiology department to undergo chest CT. Final Diagnosis: Right lung aplasia
title: An Integrated Method for Estimating Selectivities in a Multidatabase System
Creators: name: Zhu, Qiang
Publisher: name: University of Michigan
Year: 2024

description: A multidatabase system (MDBS) integrates information from autonomous local databases managed by different database management systems (MDBS) in a distributed environment. A number of challenges are raised for query optimization in such an MDBS. One of the major challenges is that some local optimization information may not be available at the global level. We recently proposed a query sampling method to drive cost estimation formulas for local databases in an MDBS [22]. To use the derived formulas to estimate the costs of queries, we need to know the selectivities of the qualifications of the queries. Unfortunately, existing methods for estimating selectivities cannot be used efficiently in an MDBS environment. This paper discusses difficulties of estimating selectivities in an MDBS. Based on the discussion, this paper presents an integrated method to estimate selectivities in an MDBS. The method integrates and extends several existing methods so that they can be used in an MDBS efficiently. It extends Christodoulakis's parametric method so that estimation accuracy is improved and more types of queries can be handled. It extends Lipton and Naughton's adaptive sampling method so that both performance and accuracy are improved. Theoretical and experimental results show that the extended Lipton and Naughton's method described in this paper can be many times faster than the original one. In addition, the integrated method uses a new piggyback approach to collect and maintain statistics, which can reduce the statistic maintenance cost. The integrated method is designed for the MDBS in the CORDS project (CORDS-MDBS). Implementation considerations are also given in the paper.
To wet or not to wet: that is the question
Creators: name: Gatica, Silvina M.
name: Cole, Milton W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Wetting transitions have been predicted and observed to occur for various combinations of fluids and surfaces. This paper describes the origin of such transitions, for liquid films on solid surfaces, in terms of the gas-surface interaction potentials V(r), which depend on the specific adsorption system. The transitions of light inert gases and H2 molecules on alkali metal surfaces have been explored extensively and are relatively well understood in terms of the least attractive adsorption interactions in nature. Much less thoroughly investigated are wetting transitions of Hg, water, heavy inert gases and other molecular films. The basic idea is that nonwetting occurs, for energetic reasons, if the adsorption potential's well-depth D is smaller than, or comparable to, the well-depth of the adsorbate-adsorbate mutual interaction. At the wetting temperature, Tw, the transition to wetting occurs, for entropic reasons, when the liquid's surface tension is sufficiently small that the free energy cost in forming a thick film is sufficiently compensated by the fluid- surface interaction energy. Guidelines useful for exploring wetting transitions of other systems are analyzed, in terms of generic criteria involving the "simple model", which yields results in terms of gas-surface interaction parameters and thermodynamic properties of the bulk adsorbate.
description: Article accepted for publication in J. Low Temp. Phys
title: Query optimization in multidatabase systems
Creators: name: Zhu, Qiang
Publisher: name: University of Michigan
Year: 2024

description: A multidatabase system (MDBS) integrates information from autonomous local databases managed by heterogeneous database management systems (DBMS) in a distributed environment. For a query involving more than one database, global query optimization should be performed to achieve good overall system performance. The significant differences between an MDBS and a traditional distributed database system (DDBS) make query optimization in the former more challenging than in the latter. Challenges for query optimization in an MDBS are discussed in this paper. A two-phase optimization approach for processing a query in an MDBS is proposed. Several global query optimization techniques suitable for an MDBS, such as semantic query optimization, query optimization via probing queries, parametric query optimization and adaptive query optimization, are suggested. The architecture of a global query optimizer incorporating these techniques is designed.
Risolto il mistero del bolide ceco
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2014

Trovati i frammenti del meteorite di Benešov dopo 20 anni dall’avvistamento del bolide sopra la Repubblica Ceca. Sono di tipo mineralogico diverso e indicano una composizione eterogenea dell’asteroide da cui provengono. Il commento di Giovanni Valsecchi (INAF)
title: Ð¡ÑÐµÐ´ÑÑÐ²Ð° Ñ ÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² ÑÐ²Ð¾ÑÑÐµÑÑÐ²Ðµ Ð¡ÑÐ¸Ð²ÐµÐ½Ð° ÐÐ¸Ð½Ð³Ð° (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÑÐ¾Ð¼Ð°Ð½Ð° Â«ÐÐ¾Ð»Ð³Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ»ÐºÐ°Â»)
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: Ð Ð¾ÑÑÐ¸ÑÐ¸Ð½Ð°, Ð¡Ð²ÐµÑ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: 2017
Subjects: ÑÑÐµÐ´ÑÑÐ²Ð° Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸
ÑÑÐ¸Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐ¸ÐµÐ¼Ñ
Ð¡ÑÐ¸Ð²ÐµÐ½ ÐÐ¸Ð½Ð³
Ð´Ð¾Ð»Ð³Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ»ÐºÐ°

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ ÑÑÐµÐ´ÑÑÐ² ÑÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² ÑÐ¾Ð¼Ð°Ð½Ðµ Â«ÐÐ¾Ð»Ð³Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ»ÐºÐ°Â» Ð¡ÑÐ¸Ð²ÐµÐ½Ð° ÐÐ¸Ð½Ð³Ð°. ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÑÑÑÑ ÑÑÐµÐ´ÑÑÐ²Ð° ÑÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ (ÑÑÐ¾Ð¿Ñ, ÑÑÐ¸Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐ¸ÐµÐ¼Ñ). ÐÑÐµÐ´Ð¼ÐµÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ - Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐµÐ´ÑÑÐ² ÑÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¸ÑÑ Ð¡ÑÐ¸Ð²ÐµÐ½Ð° ÐÐ¸Ð½Ð³Ð° (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÑÐ¾Ð¼Ð°Ð½Ð° Â«ÐÐ¾Ð»Ð³Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ»ÐºÐ°Â»). Ð¦ÐµÐ»ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÐµÐ´ÑÑÐ² ÑÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÐµÐ¼Ð¾Ð¼ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸. ÐÑÐ¸ Ð½Ð°Ð¿Ð¸ÑÐ°Ð½Ð¸Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»Ð¸ÑÑ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð¼ÐµÑÐ¾Ð´Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: Ð¼ÐµÑÐ¾Ð´ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð°, Ð¼ÐµÑÐ¾Ð´ ÑÑÐ¸Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð°, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð². ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð¸Ð· Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ñ, Ð´Ð²ÑÑ Ð³Ð»Ð°Ð² (ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹), Ð²ÑÐ²Ð¾Ð´Ð¾Ð² Ð¿Ð¾ Ð½Ð¸Ð¼, Ð·Ð°ÐºÐ»ÑÑÐµÐ½Ð¸Ñ Ð¸ ÑÐ¿Ð¸ÑÐºÐ° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð½ÑÑ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð². Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð°ÑÐ¿ÐµÐºÑÑ ÑÐ¿Ð¾ÑÑÐµÐ±Ð»ÐµÐ½Ð¸Ñ ÑÑÐµÐ´ÑÑÐ² Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐµ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸Ñ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐµÐºÑÑÐ° ÑÐ¾Ð¼Ð°Ð½Ð° Ð¡ÑÐ¸Ð²ÐµÐ½Ð° ÐÐ¸Ð½Ð³Ð° Â«ÐÐ¾Ð»Ð³Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ»ÐºÐ°Â», ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÑÐ°Ð·Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÑÐµÐ´ÑÑÐ² ÑÐ·ÑÐºÐ° Ð² ÑÐ¾Ð¼Ð°Ð½Ðµ, Ð¸Ñ ÐºÐ¾Ð½ÑÐµÐºÑÑÑÐ°Ð»ÑÐ½Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ.
Dark Energy and Matter in 4 Dimensions From an Empty Kaluza-Klein Spacetime
Creators: name: Dehghani, M. H.
name: Assyyaee, Sh.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the third order Lovelock equations without the cosmological constant term in an empty $n(\geq 8)$-dimensional Kaluza-Klein spacetime $\mathcal{M}^{4}\times \mathcal{K}^{n-4}$, where $\mathcal{K}^{n-4}$ is a constant curvature space. We show that the emptiness of the higher-dimensional spacetime imposes a constraint on the metric function(s) of 4-dimensional spacetime $\mathcal{M}^{4}$. We consider the effects of this constraint equation in the context of black hole physics, and find a black hole solution in 4 dimensions in the absence of matter field and the cosmological constant (dark energy). This solution has the same form as the 4-dimensional solution introduced in [H. Maeda and N. Dadhich, Phys. Rev. D 74 (2006) 021501(R)] for Gauss-Bonnet gravity in the presence of cosmological constant, and therefore the metric of $\mathcal{M}^{4}$ which satisfies the vacuum Lovelock equations in higher-dimensional Kaluza-Klein spacetime is unique. This black hole solution shows that the curvature of an empty higher-dimensional Kaluza-Klein spacetime creates dark energy and matter with non-traceless energy-momentum tensor in 4 dimensions.
description: 11 pages, two figures
IMAU-FDM v1.2G GDM release
Creators: name: Brils, Max
name: Kuipers Munneke, Peter
name: Van de Berg, Willem Jan
name: Van den Broeke, Michiel
Publisher: name: Zenodo
Year: 2021
Subjects: climate change, ice/atmosphere interactions, polar firn \sep snow/ice surface processe, firn modelling, elevation change

description: Release of IMAU-FDM v1.2G code at time of manuscript submission to GMD.
Mars One cade su MIT
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

Il più importante istituto di innovazione tecnologica al mondo boccia senza appello la missione Mars One, che dovrebbe portare nel 2025 quattro uomini su Marte, senza poter più tornare indietro. Il presidente dell’Istituto Nazionale di Astrofisica: «A volte la fantascienza aiuta la scienza perché immagina il futuro, ma la conquista dello spazio è ben più ardua impresa»
The Remediation Effects of Different Biofertilizers on Bacterial Community in Hg-Contaminated Soil
Creators: name: Yang, Yang
name: Chen, Chen
name: Liu, Chao-Shu
name: Sun, Rong-Guo
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: Guizhou province is the most abundant region of mercury resources in China. The long history of mining activities has resulted in severe mercury (Hg) pollution and endangering both environment and human health. This study investigated the impact of different fertilizers on Hg-polluted soil bacterial community structure. We assumed that (1) fertilizer application would lead to changes in the bacterial community; and (2) the combined application of two fertilizers did not cause additive effects. The results revealed the application of bio-organic fertilizer could significantly enhance the bacterial community diversity. However, the combination of multiple fertilizers did not yield synergistic effects. There were indications of antagonistic interactions between certain fertilizers via competition or inhibitory effects. Additionally, we conducted an experiment in the greenhouse with Brassica Pekinensis and the Hg contents in roots and leaves were measured. Our findings suggested that different fertilizers would change the release fluxes of soil Hg(0). By immobilization of Hg in the soil, fertilizer could promote a healthier and more diverse soil bacterial community. This study provides valuable insights into the influence of different fertilizers on bacterial community in Hg-polluted soil, offering potential directions for further remediation efforts and policies.
L’aria di Marte secondo Maven
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

Il neo arrivato sul Pianeta rosso ha inviato a Terrai primi dati riguardo una tempesta di particelle solari. Sono state prodotte le prime immagini nell'ultravioletto del tenue involucro di ossigeno, idrogeno e carbonio che delimita l'alta atmosfera marziana ed è stata realizzata anche una mappa dello strato dell'ozono
Pre-Jurassic sedimentation, tectonism and stratigraphy in southern Alberta and adjoining areas of British Columbia and Montana
Creators: name: Johnson, Ronald Dwight
Publisher: name: University of British Columbia
Year: 2012

description: The pre-Jurassic tectonic events of the area controlled the nature of sedimentation. These tectonic events were the result of movements of the members of the tectonic framework. The nature of the tectonic framework was established during Beltian sedimentation and was inherited by the Paleozoic era. During the Paleozoic era, the movements of various members of the tectonic framework resulted in four sequences or cycles of sedimentation. Tectonism and its control upon sedimentation from Beltian to pre-Jurassic time is shown as Beltian sedimentation and the succeeding sedimentary cycles are discussed. Type localities are defined for the Beltian and Paleozoic strata of each sequence as they occur in the area. Problems of age determination for the stratigraphic units are discussed and the correlation of these units within and beyond the are presented. These correlations show the relationship of the stratigraphic nomenclature of Montana and Alberta. Since the thesis is mainly limited to published information, it indicates the present status of published geological thought in the area.
APEX studia la Tela di ragno
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2014

La galassia si trova al centro di un ammasso di galassie in divenire, cirrcondata da centinaia di altre galassie dell'ammasso. E' la prima volta in cui è stato possibile completare un censimento della formazione stellare in un oggetto come questo
On the determination of the boundary impedance from the far field pattern
Creators: name: Godin, Yuri A.
name: Vainberg, Boris
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We consider the Helmholtz equation in the half space and suggest two methods for determining the boundary impedance from knowledge of the far field pattern of the time-harmonic incident wave. We introduce a potential for which the far field patterns in specially selected directions represent its Fourier coefficients. The boundary impedance is then calculated from the potential by an explicit formula or from the WKB approximation. Numerical examples are given to demonstrate efficiency of the approaches. We also discuss the validity of the WKB approximation in determining the impedance of an obstacle.
description: 10 pages, 4 figures
Da Mercurio l’eclissi lunare è servita
Creators: Francesca Aloisio
Publisher: name: Media Inaf
Year: 2014

Lo scorso 8 ottobre durante un’eclissi totale di Luna la sonda Messenger, che orbita intorno a Mercurio, ha ripreso le immagini del fenomeno dal suo speciale punto di vista. I fotogrammi sono stati montati in un breve timelaps che ci mostra un fenomeno planetario da una prospettiva differente da quella terreste, per guardare da un’altra angolazione e renderci meglio conto di ciò che accade nella regione dell’Universo in cui viviamo
Probing dark energy with future redshift surveys: A comparison of emission line and broad band selection in the near infrared
Creators: name: Orsi, Alvaro
name: Baugh, C. M.
name: Lacey, C. G.
name: Cimatti, A.
name: Wang, Y.
name: Zamorani, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Future galaxy surveys will map the galaxy distribution in the redshift interval $0.5 -15.4$; a flux limit of at least $\logfha = -16$ is required for an \ha sample to become competitive in effective volume.
description: submitted to MNRAS
Deriving the Representational Space and Memorability of Object Concepts and Features
Creators: name: Lee, Meng-Chien
Publisher: name: University of Chicago
Year: 2023

description: Why are some object concepts (e.g., windshield vs. toothpaste) more memorable than others? Prior studies have suggested that visual and semantic features (e.g., color) and typicality (e.g., for birds: robin vs. penguin) of object images influence the likelihood of being remembered with mixed success (Kramer et al., 2022). One reason for these modest effects may be due to the visual and memory spaces being predominantly modeled using Euclidean geometry, which may not reflect the true structure of the space. In this study, we examined whether an entirely different geometric relationship – such as a continuous hyperbolic space which approximates discrete hierarchies – explains differences in their memorability. Specifically, we hypothesized that image concepts would be geometrically arranged in hierarchical structures and that memorability would be explained by a concept’s depth in these hierarchical trees (where deeper concepts would be less remembered). To test this hypothesis, we constructed a hyperbolic representation space of object concepts (N=1,854) from the THINGS database (Hebart et al., 2019), which consists of naturalistic images of concrete objects, and a space of 49 feature dimensions (e.g., red, tall) derived from data-driven models. Using ALBATROSS (Stier et al., in prep.), a stochastic topological data analysis technique that detects underlying structures of data, we demonstrated that hyperbolic geometry efficiently captures the organization of object concepts and their memorability better than a Euclidean geometry. Specifically, we found that concepts closer to the center of the hyperbolic representational space are more prototypical and more memorable; in contrast, there was no consistent geometric organization of memorability and typicality in the Euclidean space. Taken together, we discover that concept typicality and depth in the hierarchical structure of image concepts contribute to how likely a concept is remembered across people.
title: American Samoa Pelagic Longline Fishery
titleType: AlternativeTitle
title: Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion Authorization of the American Samoa Longline Fishery
Creators: name: United States. National Marine Fisheries Service. Pacific Islands Region
Publisher: name: United States. National Marine Fisheries Service. Pacific Islands Region
Year: 2023

description: PIRO-2019-00634
Nonparametric Covariate Adjustment for Receiver Operating Characteristic Curves
Creators: name: Yao, Fang
name: Craiu, Radu V.
name: Reiser, Benjamin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The accuracy of a diagnostic test is typically characterised using the receiver operating characteristic (ROC) curve. Summarising indexes such as the area under the ROC curve (AUC) are used to compare different tests as well as to measure the difference between two populations. Often additional information is available on some of the covariates which are known to influence the accuracy of such measures. We propose nonparametric methods for covariate adjustment of the AUC. Models with normal errors and non-normal errors are discussed and analysed separately. Nonparametric regression is used for estimating mean and variance functions in both scenarios. In the general noise case we propose a covariate-adjusted Mann-Whitney estimator for AUC estimation which effectively uses available data to construct working samples at any covariate value of interest and is computationally efficient for implementation. This provides a generalisation of the Mann-Whitney approach for comparing two populations by taking covariate effects into account. We derive asymptotic properties for the AUC estimators in both settings, including asymptotic normality, optimal strong uniform convergence rates and MSE consistency. The usefulness of the proposed methods is demonstrated through simulated and real data examples.
Genova riparte dal Festival della Scienza
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2014

La manifestazione ospitata dal capoluogo ligure è arrivata alla 12esima edizione. L'alluvione dei giorni scorsi non ha fermato la macchina organizzativa e tutti gli eventi in programma verranno rispettati. Centinaia le conferenze, le installazioni e i laboratori. Attesi oltre 200 mila visitatori
title: Longline Exempted Fishing Permit under the Fishery Management Plan
titleType: AlternativeTitle
title: Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion on Consideration of an Exempted Fishing Permit to Fish with Longline Gear in the West Coast Exclusive Economic Zone
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2018

description: WCRO-2018-02291
title: Sampling Respiratory Viruses in Exhaled Breath Using the Gesundheit-II (G-II)
Creators: name: Hoffman, Maya B.
name: Spielman, Tyler J.
name: Monteparte, Nathan F.
name: Sawyer, Madison L.
name: Hasani, Ali
name: Pulley, Anna
name: Lubet, Philippe P.
name: Tai, Sheldon
name: Esparza, Yi
name: Kehinde, Saratu
name: Volchansky, Olga
name: Smith, William C.
name: Smith, Alycia A.
name: Coleman, Kristen K.
name: Milton, Donald K.
Publisher: name: Digital Repository at the University of Maryland
Year: 2025

description: From COVID-19 to the emerging H5N1 “bird flu,” many diseases are airborne and can cause infection through inhalation. In this study, we are using the Gesundheit-II (G-II) machine, an exhaled breath (EB) sampler, to better understand the transmission of respiratory infections such as influenza, COVID-19, and RSV. By analyzing the viral shedding among infected individuals, we aim to determine how humans shed common respiratory viruses through their EB. We sampled from a cohort of 70-75 University of Maryland dormitory roommate pairs to provide a mid-turbinate (MT) swab and 30-minute EB samples using the Gesundheit-II bioaerosol sampler. Study participants were selected based on self-reported onset of symptoms. MT swabs and EB samples were screened for common respiratory viruses using Cepheid, and TaqMan Array Cards (TAC). Samples were cultured for influenza A virus using TCID₅₀ assay. Thus far, we have collected a total of seven MT swabs and seven G-II fine aerosol (≤5 µm) samples. Testing using TAC identified various pathogens in five of the MT swabs (influenza A virus, coronavirus OC43, S. aureus, and M. catarrhalis). Among the MT swabs cultured for influenza A virus, three yielded positive results. The influenza A Cepheid test results for MT swabs aligned with these TCID₅₀ findings. For fine aerosol samples, TAC results are pending and viable virus has not been detected. These data can provide insight into the airborne spread of various respiratory pathogens to better inform public health interventions needed to control outbreaks and mitigate future airborne virus pandemics by setting new standards for infection control.
A quantum sensor for atom-surface interactions below 10 $μ$m
Creators: name: Sorrentino, F.
name: Alberti, A.
name: Ferrari, G.
name: Ivanov, V. V.
name: Poli, N.
name: Schioppo, M.
name: Tino, G. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We report about the realization of a quantum device for force sensing at micrometric scale. We trap an ultracold $^{88}$Sr atomic cloud with a 1-D optical lattice, then we place the atomic sample close to a test surface using the same optical lattice as an elevator. We demonstrate precise positioning of the sample at the $μ$m scale. By observing the Bloch oscillations of atoms into the 1-D optical standing wave, we are able to measure the total force on the atoms along the lattice axis, with a spatial resolution of few microns. We also demonstrate a technique for transverse displacement of the atoms, allowing to perform measurements near either transparent or reflective test surfaces. In order to reduce the minimum distance from the surface, we compress the longitudinal size of the atomic sample by means of an optical tweezer. Such system is suited for studies of atom-surface interaction at short distance, such as measurement of Casimir force and search for possible non-Newtonian gravity effects.
Ai confini del buco nero centrale
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2014

Osservazioni di Sagittarius A* compiute con il radiotelescopio spaziale russo RadioAstron e con i 10 radiotelescopi terrestri del VLBA, nel New Mexico, evidenziano una sottostruttura nel disco di gas che circonda il buco nero. Lo studio su ApJ Letters