cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Un asteroide dedicato a Liliana Segre
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

L’oggetto è il corpo minore 75190 (nella Fascia principale degli asteroidi tra Marte e Giove), lo stesso numero che la sopravvissuta alla Shoah italiana porta sul braccio da quando, tredicenne, venne deportata ad Auschwitz. Un asteroide con il nome (e il numero) di Liliana Segre. L'iniziativa proposta dall'Inaf di Trieste
Phase structure of a surface model on dynamically triangulated spheres with elastic skeletons
Creators: name: Koibuchi, Hiroshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We find three distinct phases; a tubular phase, a planar phase, and the spherical phase, in a triangulated fluid surface model. It is also found that these phases are separated by discontinuous transitions. The fluid surface model is investigated within the framework of the conventional curvature model by using the canonical Monte Carlo simulations with dynamical triangulations. The mechanical strength of the surface is given only by skeletons, and no two-dimensional bending energy is assumed in the Hamiltonian. The skeletons are composed of elastic linear-chains and rigid junctions and form a compartmentalized structure on the surface, and for this reason the vertices of triangles can diffuse freely only inside the compartments. As a consequence, an inhomogeneous structure is introduced in the model; the surface strength inside the compartments is different from the surface strength on the compartments. However, the rotational symmetry is not influenced by the elastic skeletons; there is no specific direction on the surface. In addition to the three phases mentioned above, a collapsed phase is expected to exist in the low bending rigidity regime that was not studied here. The inhomogeneous structure and the fluidity of vertices are considered to be the origin of such variety of phases.
description: 9 pages with 10 figures
การพัฒนาระบบสารสนเทศเพื่อการจัดการงานวิจัยในลุ่มนํ้าทะเลสาบสงขลาภาคใต้ประเทศไทย
Creators: name: สาธิมน ทิพยวงศ์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: ระบบสารสนเทศ, ลุ่มน้ำทะเลสาบสงขลา

description: 2, 32, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Not-so-normal mode decomposition
Creators: name: Wolf, Michael M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide a generalization of the normal mode decomposition for non-symmetric or locality constrained situations. This allows for instance to locally decouple a bipartitioned collection of arbitrarily correlated oscillators up to elementary pairs into which all correlations are condensed. Similarly, it enables us to decouple the interaction parts of multi-mode channels into single-mode and pair-interactions where the latter are shown to be a clear signature of squeezing between system and environment. In mathematical terms the result is a canonical matrix form with respect to real symplectic equivalence transformations.
description: 4 pages, 2 figures, published version
Sardegna in infrarosso
Creators: Paolo Soletta
Publisher: name: Media Inaf
Year: 2021

L’Agenzia spaziale europea pubblica un’immagine multispettrale dell’isola in alta risoluzione, frutto dell’elaborazione di numerose immagini scattate dalla coppia di satelliti “Sentinel 2” nel 2019. Ogni pixel corrisponde a un quadrato di 20x20 metri di suolo: una risoluzione sufficiente a distinguere la parabola da 64 metri del Sardinia Radio Telescope
A global view on star formation: The GLOSTAR Galactic plane survey III. 6.7 GHz methanol maser survey in Cygnus X
Creators: name: Ortiz-León, Gisela N.
name: Menten, Karl M.
name: Brunthaler, Andreas
name: Csengeri, Timea
name: Urquhart, James S.
name: Wyrowski, Friedrich
name: Gong, Yan
name: Rugel, Michael R.
name: Dzib, Sergio A.
name: Yang, Aiyuan
name: Nguyen, Hans
name: Cotton, William D.
name: Medina, Sac Nicte X.
name: Dokara, Rohit
name: Koenig, Carsten
name: Beuther, Henrik
name: Pandian, Jagadheep D.
name: Reich, Wolfgang
name: Roy, Nirupam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Cygnus X complex is covered by the Global View of Star Formation in the Milky Way (GLOSTAR) survey, an unbiased radio-wavelength Galactic plane survey, in 4--8 GHz continuum radiation and several spectral lines. The GLOSTAR survey observed the 6.7~GHz transition of methanol (CH$_3$OH), an exclusive tracer of high-mass young stellar objects. Using the Very Large Array in both the B and D configurations, we observed an area in Cygnus~X of $7^{\rm o}\times3^{\rm o}$ in size and simultaneously covered the methanol line and the continuum, allowing cross-registration. We detected thirteen sources with Class~II methanol maser emission and one source with methanol absorption. Two methanol maser sources are newly detected; in addition, we found four new velocity components associated with known masers. Five masers are concentrated in the DR21 ridge and W75N. We determined the characteristics of the detected masers and investigated the association with infrared, (sub)millimeter, and radio continuum emission. All maser sources are associated with (sub)millimeter dust continuum emission, which is consistent with the picture of masers tracing regions in an active stage of star formation. On the other hand, only five masers ($38\pm17\%$) have radio continuum counterparts seen with GLOSTAR within $\sim$1$''$, testifying to their youth. Comparing the distributions of the bolometric luminosity and the luminosity-to-mass ratio of cores that host 6.7~GHz methanol masers with those of the full core population, we identified lower limits $L_{\rm Bol}\sim200~L_\odot$ and $L_{\rm Bol}/M_{\rm core}\sim1~L_\odot~M^{-1}_\odot$ for a dust source to host maser emission.
description: To be published in A&A. Language edited version
Development of continuous deglycerolisation reactor for ethyl ester production
Creators: name: Ruamporn Nikhom
name: Thanet Waisuwan
name: Sunchai Klinpikul
name: Sakesun Suthummanon
name: Kittiphoom Supalakpanya
name: Chakrit Tongurai
Publisher: name: Faculty of Engineering, Khon Kaen University
Year: 2014
Subjects: Biodiesel,Transesterification,Ethyl ester,Reactor,Continuous deglycerolisation

description: 4, 41, KKU Engineering Journal
A caccia di assioni, da Terra e dallo Spazio
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Un gruppo di scienziati ha cercato le tracce degli assioni nelle osservazioni X di Betelgeuse, senza trovarne alcuna. Lo studio – pubblicato su Physical Review Letters – ha permesso di porre dei vincoli alle proprietà di queste ipotetiche particelle tre volte più forti di quanto abbia mai fatto qualsiasi precedente esperimento di rilevamento condotto sulla Terra. Media Inaf ha intervistato uno degli autori, Oscar Straniero, astrofisico all’Inaf d’Abruzzo
Vortex Dynamics at the Initial Stage of Resistive Transition in Superconductors with Fractal Cluster Structure
Creators: name: Kuzmin, Yuriy I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effect of fractal normal-phase clusters on vortex dynamics in a percolative superconductor is considered. The superconductor contains percolative superconducting cluster carrying a transport current and clusters of a normal phase, acting as pinning centers. A prototype of such a structure is YBCO film, containing clusters of columnar defects, as well as the BSCCO/Ag sheathed tape, which is of practical interest for wire fabrication. Transition of the superconductor into a resistive state corresponds to the percolation transition from a pinned vortex state to a resistive state when the vortices are free to move. The dependencies of the free vortex density on the fractal dimension of the cluster boundary as well as the resistance on the transport current are obtained. It is revealed that a mixed state of the vortex glass type is realized in the superconducting system involved. The current-voltage characteristics of superconductors containing fractal clusters are obtained and their features are studied.
description: Invited Talk at NATO Advanced Research Workshop "Vortex Dynamics in Superconductors and other Complex Systems", Yalta, Ukraine, Sept 13-17 (2004); 6 pages, 3 figures, 23 refs
Solvent extraction of copper(II) from chloride solutions using 1,1′-dialkyl-2,2′-bibenzimidazoles as extractants
Creators: name: Mądrzak-Litwa, Iwona
name: Borowiak-Resterna, Aleksandra
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: copper, solvent extraction, metal removal, chloride solution, 2,2′-bibenzimidazole

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Do O-stars form in isolation?
Creators: name: Parker, Richard J.
name: Goodwin, Simon P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Around 4% of O-stars are observed in apparent isolation, with no associated cluster, and no indication of having been ejected from a nearby cluster. We define an isolated O-star as a star > 17.5 M_\odot in a cluster with total mass <100 M_\odot which contains no other massive (>10 M_\odot) stars. We show that the fraction of apparently isolated O-stars is reproduced when stars are sampled (randomly) from a standard initial mass function and a standard cluster mass function of the form N(M) \propto M^-2. This result is difficult to reconcile with the idea that there is a fundamental relationship between the mass of a cluster and the mass of the most massive star in that cluster. We suggest that such a relationship is a typical result of star formation in clusters, and that `isolated O-stars' are low-mass clusters in which massive stars have been able to form.
description: 6 pages, 5 figures, MNRAS in press
Infinite Horizon and Ergodic Optimal Quadratic Control for an Affine Equation with Stochastic Coefficients
Creators: name: Guatteri, Giuseppina
name: Masiero, Federica
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 93E20, 49N10, 60H10

description: We study quadratic optimal stochastic control problems with control dependent noise state equation perturbed by an affine term and with stochastic coefficients. Both infinite horizon case and ergodic case are treated. To this purpose we introduce a Backward Stochastic Riccati Equation and a dual backward stochastic equation, both considered in the whole time line. Besides some stabilizability conditions we prove existence of a solution for the two previous equations defined as limit of suitable finite horizon approximating problems. This allows to perform the synthesis of the optimal control.
Collisioni galattiche, buchi neri a stecchetto
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2021

Secondo uno studio condotto da ricercatori dell'Università di Tokyo, le collisioni frontali tra galassie attive possono ridurre l’attività dei buchi neri massicci che ospitano al loro centro, spazzando via il disco di accrescimento contenente la materia di cui si nutrono
Probing the structure of a massive filament: ArTeMiS 350 and 450 micron mapping of the integral-shaped filament in Orion A
Creators: name: Schuller, F.
name: André, Ph.
name: Shimajiri, Y.
name: Zavagno, A.
name: Peretto, N.
name: Arzoumanian, D.
name: Csengeri, T.
name: Könyves, V.
name: Palmeirim, P.
name: Pezzuto, S.
name: Rigby, A.
name: Roussel, H.
name: Ajeddig, H.
name: Dumaye, L.
name: Gallais, P.
name: Pennec, J. Le
name: Martignac, J.
name: Mattern, M.
name: Revéret, V.
name: Rodriguez, L.
name: Talvard, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (abridged) Within the Orion A molecular cloud, the integral-shaped filament (ISF) is a prominent, degree-long structure of dense gas and dust, with clear signs of recent and on-going high-mass star formation. We used the ArTeMiS bolometer camera at APEX to map a 0.6x0.2 deg^2 region covering OMC-1, OMC-2, OMC-3 at 350 and 450 micron. We combined these data with Herschel-SPIRE maps to recover extended emission. The combined Herschel-ArTeMiS maps provide details on the distribution of dense, cold material, with a high spatial dynamic range, from our 8'' resolution (0.016 pc) up to the size of the map ~10-15 deg. By combining Herschel and ArTeMiS data at 160, 250, 350 and 450 micron, we constructed high-resolution temperature and H2 column density maps. We extracted radial profiles from the column density map in several, representative portions of the ISF, that we fitted with Gaussian and Plummer models to derive their intrinsic widths. We also compared the distribution of material traced by ArTeMiS with that seen in the higher density tracer N2H+(1-0) recently observed with the ALMA interferometer. All the radial profiles that we extracted show clear deviation from a Gaussian, with evidence for an inner plateau, previously not seen using Herschel-only data. We measure intrinsic half-power widths in the range 0.06 to 0.11 pc. This is significantly larger than the Gaussian widths measured for fibers seen in N2H+, which probably traces only the dense innermost regions of the large-scale filament. These half-power widths are within a factor of two of the value of 0.1 pc found for a large sample of nearby filaments in various low-mass star-forming regions, which tends to indicate that the physical conditions governing the fragmentation of prestellar cores within transcritical or supercritical filaments are the same over a large range of masses per unit length.
description: 17 pages, accepted for publication in A&A. Revised version after language editing
title: Neologica. 2014, n° 8
title: Revue internationale de néologie
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2014
Subjects: subject: Dictionnaire
subject: Néologie
subject: Lexicographie
subject: Métalexicographie
subject: Terminologie
subject: Emprunt
subject: Contrastif
subject: Néonymie

description: Contributeurs : Andreina Adelstein, Rima Baraké, Ji In Choi, Judit Freixa Aymerich, Francine Gerhardt-Krait, Soufiane Lanseur, Elisabet Llopart, Kira Peshkov, Marie-Laure Pflanz, Antoinette Renouf, Christophe Rey, Micaela Rossi et Giovanni Tallarico.
Fusion process studied with preequilibrium giant dipole resonance in time dependent Hartree-Fock theory
Creators: name: Simenel, Cédric
name: Chomaz, Philippe
name: De France, Gilles
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The equilibration of macroscopic degrees of freedom during the fusion of heavy nuclei, like the charge and the shape, are studied in the Time-Dependent Hartree-Fock theory. The pre-equilibrium Giant Dipole Resonance (GDR) is used to probe the fusion path. It is shown that such isovector collective state is excited in N/Z asymmetric fusion and to a less extent in mass asymmetric systems. The characteristics of this GDR are governed by the structure of the fused system in its preequilibrium phase, like its deformation, rotation and vibration. In particular, we show that a lowering of the pre-equilibrium GDR energy is expected as compared to the statistical one. Revisiting experimental data, we extract an evidence of this lowering for the first time. We also quantify the fusion-evaporation enhancement due to gamma-ray emission from the pre-equilibrium GDR. This cooling mechanism along the fusion path may be suitable to synthesize in the future super heavy elements using radioactive beams with strong N/Z asymmetries in the entrance channel.
description: 15 pages, 19 figures, revised version
L’asse di Saturno al traino di un Titano
Creators: Paolo Soletta
Publisher: name: Media Inaf
Year: 2021

In uno studio a coordinamento francese pubblicato su Nature Astronomy, tre ricercatori – tra cui l’italiano Giacomo Lari dell’Università di Pisa – esaminano l’asse di rotazione di Saturno e individuano nel rapido allontanamento di Titano, il più grande dei suoi satelliti, il responsabile degli attuali 27 gradi di inclinazione. La scoperta, controcorrente rispetto alle teorie finora accettate, potrebbe avere implicazioni anche nello studio dei pianeti extrasolari
Multi-track Displaced Vertices at B-Factories
Creators: name: Acevedo, Mason
name: Blackburn, Albany
name: Blinov, Nikita
name: Shuve, Brian
name: Stone, Mavis
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a program at B-factories of inclusive, multi-track displaced vertex searches, which are expected to be low background and give excellent sensitivity to non-minimal hidden sectors. Multi-particle hidden sectors often include long-lived particles (LLPs) which result from approximate symmetries, and we classify the possible decays of GeV-scale LLPs in an effective field theory framework. Considering several LLP production modes, including dark photons and dark Higgs bosons, we study the sensitivity of LLP searches with different number of displaced vertices per event and track requirements per displaced vertex, showing that inclusive searches can have sensitivity to a large range of hidden sector models that are otherwise unconstrained by current or planned searches.
description: 25+16 pages, 17 figures. v2: typos corrected, references updated, submitted to JHEP
Green technology, IoT, UTAUT2, households, Kazakhstan.pdf
Creators: name: Alkeyeva, Ainur
Publisher: name: figshare
Year: 2022
Subjects: subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: Applied Computer Science
subject: 160802 Environmental Sociology
subject: FOS: Sociology
subject: 160301 Family and Household Studies
subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 140303 Economic Models and Forecasting

description: This thesis's purpose is to identify factors that influence the adoption of “green” IoT mobile application for households in post-Soviet countries, mainly Kazakhstan.
 The Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) was used as a main research model using the multiple linear regression analysis. Findings revealed that the model is a significant predictor of Behavioural Intention (BI). However, only Performance Expectancy, Price Value, and Habit demonstrated significant influence on Behavioural Intention on adoption of IoT in households. The better understanding of the current situation in the related fields was provided through literature review. It included following: household management in terms of Circular Economy, existing technologies for household management, factors influencing adoption of Circular Economy principles and Technology, current state of green behaviour and green technology adoption in developed and post-Soviet countries, mainly Kazakhstan, etc. Participants of the research were informed that the results of the findings could be made publicly available without revealing the personal identification information.
Determining the range of magnetic interactions from the relations between magnon eigenvalues at high-symmetry k points
Creators: name: Wang, Di
name: Yu, Jihai
name: Tang, Feng
name: Li, Yuan
name: Wan, Xiangang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic exchange interactions (MEIs) define networks of coupled magnetic moments and lead to a surprisingly rich variety of their magnetic properties. Typically MEIs can be estimated by fitting experimental results. But how many MEIs need to be included in the fitting process for a material is not clear a priori, which limits the quality of results obtained by these conventional methods. In this paper, based on linear spin-wave theory but without performing matrix diagonalization, we show that for a general quadratic spin Hamiltonian, there is a simple relation between the Fourier transform of MEIs and the sum of square of magnon energies (SSME). We further show that according to the real-space distance range within which MEIs are considered relevant, one can obtain the corresponding relationships between SSME in momentum space. We also develop a theoretical tool for tabulating the rule about SSME. By directly utilizing these characteristics and the experimental magnon energies at only a few high-symmetry k points in the Brillouin zone, one can obtain strong constraints about the range of exchange path beyond which MEIs can be safely neglected. Our methodology is also general applicable for other Hamiltonian with quadratic Fermi or Boson operators.
A Magnus- and Fer-type formula in dendriform algebras
Creators: name: Ebrahimi-Fard, Kurusch
name: Manchon, Dominique
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 05E99; 16W99

description: We provide a refined approach to the classical Magnus and Fer expansion, unveiling a new structure by using the language of dendriform and pre-Lie algebras. The recursive formula for the logarithm of the solutions of the equations X=1+ta a in A[[t]] is provided, where (A,) is a dendriform algebra. Then, we present the solutions to these equations as an infinite product expansion of exponentials. Both formulae involve the pre-Lie product naturally associated with the dendriform structure. Several applications are presented.
description: 13 pages, LaTeX. Terminology issues fixed. Page setup problems fixed on pdf file. Final version as to appear in Foundations of Computational Mathematics
Maps of random walks on complex networks reveal community structure
Creators: name: Rosvall, M.
name: Bergstrom, C. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: To comprehend the multipartite organization of large-scale biological and social systems, we introduce a new information theoretic approach that reveals community structure in weighted and directed networks. The method decomposes a network into modules by optimally compressing a description of information flows on the network. The result is a map that both simplifies and highlights the regularities in the structure and their relationships. We illustrate the method by making a map of scientific communication as captured in the citation patterns of more than 6000 journals. We discover a multicentric organization with fields that vary dramatically in size and degree of integration into the network of science. Along the backbone of the network -- including physics, chemistry, molecular biology, and medicine -- information flows bidirectionally, but the map reveals a directional pattern of citation from the applied fields to the basic sciences.
description: 7 pages and 4 figures plus supporting material. For associated source code, see http://www.tp.umu.se/~rosvall/
Sei mondi in bilico tra armonia e caos
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Toi-178 è un sistema planetario davvero fuori dal comune: attorno alla stella madre, distante circa 200 anni luce da noi, in direzione della costellazione dello Scultore, sono stati scoperti ben sei pianeti, anche grazie alle nuove osservazioni del satellite Cheops – la missione dell’Esa dedicata alla caratterizzazione degli esopianeti con un’importante partecipazione italiana, che vede coinvolti l’Inaf, l’Asi e l’Università di Padova – combinate con quelle di alcuni telescopi a terra
title: Comite permanent du droit des marques, des dessins et modeles industriels et des indications geographiques :
title: Rapport adopté par le Comité.
titleType: Subtitle
Creators: name: (:Unas)
Publisher: name: Unknown
Year: 0

description: Le Comité permanent du droit des marques, des dessins et modèles industriels et des indications géographiques (ci-après dénommé “comité permanent” ou “SCT”) a tenu sa dix-huitième session à Genève du 12 au 16 novembre 2007.
La Terra ruota più velocemente?
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

Le registrazioni circa la durata dei giorni del 2020, pubblicate dall’International Earth Rotation and Reference Systems Service, hanno evidenziato 28 giorni con una durata minima da record nel corso dell’anno. Se si tratti di un’inversione di tendenza definitiva o della conseguenza di un fenomeno preciso, solo il tempo e i dati del 2021 potranno rivelarlo. Nel frattempo, ne parliamo con Monia Negusini, esperta di geodesia dell’Inaf di Bologna
title: Neologica. 2010, n° 4
title: Revue internationale de néologie
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2010
Subjects: subject: Néologie
subject: Lexicologie
subject: Lexicographie
subject: Terminologie
subject: Créativité lexicale
subject: Évolution de la langue
subject: Énonciation
subject: Sociolinguistique
subject: Analyse du discours
subject: Littérature
subject: Nomination
subject: Dénomination
subject: Sémantique lexicale
subject: Emprunt lexical

description: Neologica vise à combler une lacune dans le domaine des sciences du langage. Révélateurs du dynamisme des langues, les néologismes entretiennent des relations avec toutes les branches des sciences du langage. Leur étude est donc vaste et doit être conduite sous de multiples angles d'attaque, qui fourniront autant de thèmes pour les numéros à venir. Chaque numéro comprend en effet une partie thématique et une partie varia ainsi que des rubriques comme la bibliographie de la néologie, des comptes rendus, etc.
description: Neologica, an international review of neology, aims to fill a gap in modern language sciences, which take only episodic and indirect interest in a phenomenon which is fundamental in all languages.
Uncertainty-Based Biological Age Estimation of Brain MRI Scans
Creators: name: Armanious, Karim
name: Abdulatif, Sherif
name: Shi, Wenbin
name: Hepp, Tobias
name: Gatidis, Sergios
name: Yang, Bin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Age is an essential factor in modern diagnostic procedures. However, assessment of the true biological age (BA) remains a daunting task due to the lack of reference ground-truth labels. Current BA estimation approaches are either restricted to skeletal images or rely on non-imaging modalities that yield a whole-body BA assessment. However, various organ systems may exhibit different aging characteristics due to lifestyle and genetic factors. In this initial study, we propose a new framework for organ-specific BA estimation utilizing 3D magnetic resonance image (MRI) scans. As a first step, this framework predicts the chronological age (CA) together with the corresponding patient-dependent aleatoric uncertainty. An iterative training algorithm is then utilized to segregate atypical aging patients from the given population based on the predicted uncertainty scores. In this manner, we hypothesize that training a new model on the remaining population should approximate the true BA behavior. We apply the proposed methodology on a brain MRI dataset containing healthy individuals as well as Alzheimer's patients. We demonstrate the correlation between the predicted BAs and the expected cognitive deterioration in Alzheimer's patients.
description: Accepted in ICASSP 2021. 5 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:2009.10765
Il primo gioviano caldo senza nubi all’orizzonte
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2021

Wasp-62b è un gioviano caldo a 575 anni luce da noi, sul quale un anno dura meno di cinque giorni terrestri. La sua particolarità, suggeriscono i dati raccolti con il telescopio spaziale Hubble, è che ha un’atmosfera priva di nubi – il che rende più facile studiarne la composizione chimica
Influencing mechanisms of sodium hexametaphosphate on molybdenite flotation using sea water
Creators: name: Wang, Lizhangzheng
name: Li, Yubiao
name: Fan, Ruihua
name: Fan, Rong
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: Sodium hexametaphosphate; Flotation; Molybdenite; Sea water; Mechanism

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
A unified analysis of the reactor neutrino program towards the measurement of the theta_13 mixing angle
Creators: name: Mention, Guillaume
name: Lasserre, Thierry
name: Motta, Dario
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present in this article a detailed quantitative discussion of the measurement of the leptonic mixing angle theta_13 through currently scheduled reactor neutrino oscillation experiments. We thus focus on Double Chooz (Phase I & II), Daya Bay (Phase I & II) and RENO experiments. We perform a unified analysis, including systematics, backgrounds and accurate experimental setup in each case. Each identified systematic error and background impact has been assessed on experimental setups following published data when available and extrapolating from Double Chooz acquired knowledge otherwise. After reviewing the experiments, we present a new analysis of their sensitivities to sin^2(2 theta_13) and study the impact of the different systematics based on the pulls approach. Through this generic statistical analysis we discuss the advantages and drawbacks of each experimental setup.
description: 28 pages, 7 figures, 14 tables, one appendix
Getti blu, uno spettacolo stratosferico
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2021

I “blue jets” sono spettacolari e rari fenomeni elettrici che avvengono nell’alta atmosfera. L’osservatorio Asim sulla Stazione spaziale internazionale ha documentato la formazione di uno di questi bagliori sfuggenti in una nube stratosferica vicino all’isola di Naru, nell’Oceano Pacifico. I risultati delle osservazioni sono pubblicati su Nature
Sources of variation in larval survival, growth and development rates and their consequences for adult survival and reproductive success in Enallagma boreale Selys (Odonata: Coenagrionidae)
Creators: name: Anholt, Bradley Ralph
Publisher: name: University of British Columbia
Year: 2010

description: The sources of variation in larval survival, growth, and development rates and their consequences for adult survival and reproductive success of the coenagrionid damselfly Enallagma boreale Selys were examined in two years with contrasting weather. The effect of larval density, food availability, and interference competition was studied in field enclosures. Habitat complexity was manipulated using artificial macrophytes to decouple exploitative and interference competition. At high larval densities or low habitat complexity, larvae were more evenly spaced among the artificial macrophytes than expected if they were distributed independently of each other. Lower survival, growth and development rates were exhibited by larvae that experienced high density and low food availability. There was no effect of the habitat complexity manipulation on these rates. Interference competition therefore has a low cost. Adults that had been experimentally manipulated as larvae were individually marked to assess whether larval conditions affected adult survival and reproductive success. Females had lower survival to sexual maturity than males. Females increased their mass by nearly 30 percent independent of their mass at emergence. Small males increased their mass more than large males but the mean mass gain was less than five percent of mass at emergence. Female survival to reproductive maturity was independent of size at emergence in both years. Large males had better survival in 1985, a warm dry year, but there was no relationship in 1986, a cool wet year. Male survival was independent of date of emergence in 1985, but late emerging males had better survival in 1986 (after the weather had improved). Early emerging females survived better in 1985, but late emerging females did better in 1986. Lower survival of females and small males suggests that mortality is correlated with mass gain in the pre-reproductive period, possibly due to increased risk of predation while foraging. The target of selection may not be body size but behaviour which is correlated with body size. Increased mass due to foraging almost certainly contributes to reproductive success of females by providing resources for eggs. Ignoring the mortality associated with this increase in mass underestimates the variance in reproductive success of females. While large males may have had better survival, of those males that did survive, small males had higher reproductive success. Reproductive success was independent of size at or date of emergence for females in both 1985 and 1986.
Active Learning of Continuous-time Bayesian Networks through Interventions
Creators: name: Linzner, Dominik
name: Koeppl, Heinz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We consider the problem of learning structures and parameters of Continuous-time Bayesian Networks (CTBNs) from time-course data under minimal experimental resources. In practice, the cost of generating experimental data poses a bottleneck, especially in the natural and social sciences. A popular approach to overcome this is Bayesian optimal experimental design (BOED). However, BOED becomes infeasible in high-dimensional settings, as it involves integration over all possible experimental outcomes. We propose a novel criterion for experimental design based on a variational approximation of the expected information gain. We show that for CTBNs, a semi-analytical expression for this criterion can be calculated for structure and parameter learning. By doing so, we can replace sampling over experimental outcomes by solving the CTBNs master-equation, for which scalable approximations exist. This alleviates the computational burden of sampling possible experimental outcomes in high-dimensions. We employ this framework in order to recommend interventional sequences. In this context, we extend the CTBN model to conditional CTBNs in order to incorporate interventions. We demonstrate the performance of our criterion on synthetic and real-world data.
description: Accepted at ICML2021
Lampi gamma, magnetar e ritardi rivelatori
Creators: Claudia Mignone
Publisher: name: Media Inaf
Year: 2021

Ultimamente si è parlato molto di magnetar, lampi gamma, brillamenti ad altissime energie e addirittura lampi radio veloci. C’è un legame tra questi eventi cosmici apparentemente distinti? Per fare il punto su uno di essi, il brillamento gigante da magnetar osservato lo scorso 15 aprile, abbiamo intervistato l’astrofisico Nicola Omodei, ricercatore all’Università di Stanford
Il segreto delle Eros è una compagna nascosta?
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2021

L’acronimo sta per “Extremely Red Objects” – Eros, appunto – e sono stelle la cui luce è infrarossa al punto da costituire un enigma. Ora però un team guidato da Flavia Dell’Agli dell’Inaf di Roma potrebbe aver trovato una spiegazione all’eccesso di polvere che le avvolge: in realtà si tratterebbe di stelle binarie
Anatomia di due celebri nebulose planetarie
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2021

Partendo da due recenti immagini scattate dal telescopio spaziale Hubble, un gruppo di ricercatori ha analizzato nel dettaglio i processi di formazione delle nebulose Ngc 6302 e Ngc 7027 sfruttando l’intera capacità pancromatica del telescopio di Nasa ed Esa – dal vicino ultravioletto al vicino infrarosso
Pianeti al bivio, nello spazio e nel tempo
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

Pubblicato oggi su Science un nuovo quadro teorico che spiegherebbe la formazione e la struttura attuale del Sistema solare. Lo scenario proposto si basa sulla divisione netta in due epoche e luoghi di formazione per pianeti interni ed esterni, e sarebbe in grado di spiegare le diverse caratteristiche dei pianeti terrestri (come la Terra) e di quelli esterni (come Giove), trovando riscontro anche nella composizione chimica di asteroidi e diverse famiglie di meteoriti
Optimal Routing for Decode-and-Forward based Cooperation in Wireless Networks
Creators: name: Ong, Lawrence
name: Motani, Mehul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We investigate cooperative wireless relay networks in which the nodes can help each other in data transmission. We study different coding strategies in the single-source single-destination network with many relay nodes. Given the myriad of ways in which nodes can cooperate, there is a natural routing problem, i.e., determining an ordered set of nodes to relay the data from the source to the destination. We find that for a given route, the decode-and-forward strategy, which is an information theoretic cooperative coding strategy, achieves rates significantly higher than that achievable by the usual multi-hop coding strategy, which is a point-to-point non-cooperative coding strategy. We construct an algorithm to find an optimal route (in terms of rate maximizing) for the decode-and-forward strategy. Since the algorithm runs in factorial time in the worst case, we propose a heuristic algorithm that runs in polynomial time. The heuristic algorithm outputs an optimal route when the nodes transmit independent codewords. We implement these coding strategies using practical low density parity check codes to compare the performance of the strategies on different routes.
description: Accepted and to be presented at Fourth Annual IEEE Communications Society Conference on Sensor, Mesh, and Ad Hoc Communications and Networks (SECON 2007), San Diego, California, June 18-21 2007
Effects of single and mixed reagent systems on improved diaspore recovery
Creators: name: Jiang, Hao
name: Xiang, Guoyuan
name: Gao, Ya
name: Khoso, Sultan Ahmed
name: Peng, Weiwen
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: diaspore, flotation, mixed collectors, froth stability, adsorption

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Ciuffi di Sole in alta definizione
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Combinando i dati della Nasa con procedure di elaborazione delle immagini all'avanguardia, gli scienziati sono riusciti a ottenere immagini con una risoluzione senza precedenti di alcune strutture che costituiscono i pennacchi solari, chiamate piume. Lo studio suggerisce che le piume, sebbene relativamente piccole, potrebbero svolgere un ruolo cruciale nel definire le caratteristiche del vento solare su larga scala. Tutti i dettagli su ApJ
Circumnuclear Gas in Seyfert 1 Galaxies: Morphology, Kinematics, and Direct Measurement of Black Hole Masses
Creators: name: Hicks, E. K. S.
name: Malkan, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) The two-dimensional distribution and kinematics of the molecular, ionized, and highly ionized gas in the nuclear regions of Seyfert 1 galaxies have been measured using high spatial resolution (~0''.09) near-infrared spectroscopy from NIRSPEC with adaptive optics on the Keck telescope. Molecular hydrogen, H2, is detected in all nine Seyfert 1 galaxies and, in the majority of galaxies, has a spatially resolved flux distribution. In contrast, the narrow component of the BrG emission has a distribution consistent with that of the K-band continuum. In general, the kinematics of H2 are consistent with thin disk rotation, with a velocity gradient of over 100 km/s measured across the central 0''.5 in three galaxies, and across the central 1''.5 in two galaxies. The kinematics of BrG are in agreement with the H2 rotation, except in all four cases the central 0''.5 is either blue- or redshifted by more than 75 km/s. The highly ionized gas, measured with the [Ca VIII] and [Si VII] coronal lines, is spatially and kinematically consistent with BrG in the central 0''.5. Dynamical models have been fitted to the two-dimensional H2 kinematics, taking into account the stellar mass distribution, the emission line flux distribution, and the point spread function. For NGC 3227 the modeling indicates a black hole mass of Mbh = 2.0{+1.0/-0.4} x 10^7 Msun, and for NGC 4151 Mbh = 3.0{+0.75/-2.2} x 10^7 Msun. In NGC 7469 the best fit model gives Mbh < 5.0 x 10^7 Msun. In all three galaxies, modeling suggests a near face-on disk inclination angle, which is consistent with the unification theory of active galaxies. The direct black hole mass estimates verify that masses determined from the technique of reverberation mapping are accurate to within a factor of three with no additional systematic errors.
description: 43 pages, including 47 figures; Accepted for publication in ApJ. All 2-D maps (in high resolution) are available at http://www.astro.ucla.edu/~ehicks . Minor changes to the text and updated reverberation mapped black hole mass estimates; the conclusions are unchanged
The HI and stellar mass bivariate distribution of centrals and satellites for all, late- and early-type local galaxies
Creators: name: Calette, A. R.
name: Avila-Reese, Vladimir
name: Rodríguez-Puebla, Aldo
name: Lagos, Claudia del P.
name: Catinella, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We characterize the conditional distributions of the HI gas-to-stellar mass ratio, $R_{HI}\equiv M_{HI}/M_{\ast}$, given the stellar mass, $M_{\ast}$, of local galaxies from $M_{\ast}\sim 10^7$ to $10^{12}$ $M_{\odot}$ separated into centrals and satellites as well as into late- and early-type galaxies (LTGs and ETGs, respectively). To do so, we use (1) the homogeneous "eXtended GALEX Arecibo SDSS Survey", xGASS (Catinella et al. 2018), by re-estimating their upper limits and taking into account them in our statistical analysis; and (2) the results from a large compilation of HI data reported in Calette et al. (2018). We use the $R_{HI}$ conditional distributions combined with the Galaxy Stellar Mass Function to infer the bivariate $M_{HI}$ and $M_{\ast}$ distribution of all galaxies as well of the late/early-type and central/satellite subsamples and their combinations. Satellites are on average less HI gas-rich than centrals at low and intermediate masses, with differences being larger for ETGs than LTGs; at $M_{\ast}>3-5\times 10^{10}$ $M_{\odot}$ the differences are negligible. The differences in the HI gas content are much larger between LTGs and ETGs than between centrals and satellites. Our empirical HI Mass Function is strongly dominated by central galaxies at all masses. The empirically constrained bivariate $M_{HI}$ and $M_{\ast}$ distributions presented here can be used to compare and constrain theoretical predictions as well as to generate galaxy mock catalogues.
description: In press, 21 pages, 15 figures. Minor corrections in text, results unchanged. Supplementary material available at ancillary files
The role of jet-cocoon mixing, magnetization and shock breakout in neutrino and cosmic-ray emission from short GRBs
Creators: name: Gottlieb, Ore
name: Globus, Noemie
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform GRMHD and RMHD simulations of weakly and highly magnetized gamma-ray burst (GRB) jets propagating in binary neutron star (BNS) merger ejecta. Using the simulations, we first find that mixing between the jet and cocoon, which is present in all types of jets, inhibits the formation of subphotospheric collisionless shocks. However, we show that a mild magnetization may lead to the formation of collisionless subshocks which allow efficient proton acceleration. We consider shear acceleration and diffusive shock acceleration at collimation shocks, internal shocks, shock breakout, and external shocks, to provide the first self-consistent estimate for neutrino and cosmic-ray (CR) signals from GRBs in BNS mergers. We find that short GRBs do not produce detectable neutrino signals with current-day facilities. Shock breakout yields $ \sim 10 $ PeV neutrinos at viewing angles $\sim20^\circ $, independent of the jet magnetization. However, a neutrino signal from shock breakout is well below detection limits of current detectors. Such a signal would allow a coincident neutrino-$γ-$ray detection, providing a testable prediction for shock breakout as a neutrino production site. Using the numerical modeling that fits GW170817 afterglow emission, we find that blast waves in BNS mergers can account for 5%-10% of the Galactic CR luminosity in the PeV-EeV energy range. Based on these estimates, the observed level of CR anisotropy places a constraint on the distance of the latest Galactic binary neutron star merger to $\lesssim3$ kiloparsecs.