cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Current Events
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Durham, Kim
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording contains discussions of present-day events that are going on in both the speakers' individual lives as well as global events, notably the upcoming election and monuments that they are driving past. Parts of the recording are muted somewhat by the noise of the car engine.
Eclipsing binaries suitable for distance determination in the Andromeda galaxy
Creators: name: Vilardell, F.
name: Ribas, I.
name: Jordi, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Local Group galaxies constitute a fundamental step in the definition of cosmic distance scale. Therefore, obtaining accurate distance determinations to the galaxies in the Local Group, and notably to the Andromeda Galaxy (M31), is essential to determining the age and evolution of the Universe. With this ultimate goal in mind, we started a project to use eclipsing binaries as distance indicators to M31. Eclipsing binaries have been proved to yield direct and precise distances that are essentially assumption free. To do so, high-quality photometric and spectroscopic data are needed. As a first step in the project, broad band photometry (in Johnson B and V) has been obtained in a region (34'x34') at the North-Eastern quadrant of the galaxy over 5 years. The data, containing more than 250 observations per filter, have been reduced by means of the so-called difference image analysis technique and the DAOPHOT program. A catalog with 236238 objects with photometry in both B and V passbands has been obtained. The catalog is the deepest (V<25.5 mag) obtained so far in the studied region and contains 3964 identified variable stars, with 437 eclipsing binaries and 416 Cepheids. The most suitable eclipsing binary candidates for distance determination have been selected according to their brightness and from the modelling of the obtained light curves. The resulting sample includes 24 targets with photometric errors around 0.01 mag. Detailed analysis (including spectroscopy) of some 5-10 of these eclipsing systems should result in a distance determination to M31 with a relative uncertainty of 2-3% and essentially free from systematic errors, thus representing the most accurate and reliable determination to date.
description: 12 pages, 9 figures; accepted for publication in A&A; see electronic tables and full resolution images at http://www.am.ub.es/~fvilarde/download/A+A/
I (non)luoghi del mito. Sulle strade del grande ciclismo
Creators: name: Perissinotto, Alessandro
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: Just as cathedrals speak of religion even when mass is over, large sports facilities speak of sport, even if the game or competition is over. Arenas, ski jumping boards, sports halls are places of sport and, as places, they are both cultural heritageand tourist attraction. On the contrary, the road, a space of transit and not of permanence, is a non- place by definition; but what happens to this non-place when it becomes the seat of the cycling myth? What happens to this “identityless” space (according to Augé’s definition) when it is covered with words praising the various champions and filled with fans who, like real sports tourists, camp and live on the road? What happens to the street when, by virtue of sports mythology, it becomes the object of pictorial, literary, photographic and musical representations? This short essay aims to investigate the role of cycling in the transformation of the road from a non-practical place to a place fully inscribed within the material and immaterial heritage of European culture.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
Evolution of cold gas at 2
Creators: name: Gupta, N.
name: Srianand, R.
name: Shukla, G.
name: Krogager, J-. K.
name: Noterdaeme, P.
name: Combes, F.
name: Dutta, R.
name: Fynbo, J. P. U.
name: Hilton, M.
name: Momjian, E.
name: Moodley, K.
name: Petitjean, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results from a spectroscopically blind search for associated and intervening HI 21-cm and OH 18-cm absorption lines towards 88 AGNs at $2\le z\le5$ using the upgraded Giant Metrewave Radio Telescope (uGMRT). The sample of AGNs with 1.4 GHz spectral luminosity in the range, $10^{27 - 29.3}$ W/Hz, is selected using mid-infrared colors and closely resembles the distribution of the underlying quasar population. The search for associated or proximate absorption, defined to be within 3000 km/s of the AGN redshift, led to one HI 21-cm absorption detection (M1540-1453; $z_{abs}$= 2.1139). This is only the fourth known absorption at $z>2$. The detection rate ($1.6^{+3.8}_{-1.4}$%) suggests low covering factor of cold neutral medium (CNM; T$\sim$100 K) associated with these powerful AGNs. The intervening absorption line search, with a sensitivity to detect CNM in damped Ly$α$ systems (DLAs), has comoving absorption path lengths of $Δ$X = 130.1 and 167.7 for HI and OH, respectively. The corresponding number of absorber per unit comoving path lengths are $\le$0.014 and $\le$0.011, respectively. The former is at least 4.5 times lower than that of DLAs and consistent with the CNM cross-section estimated using H$_2$ and CI absorbers at $z>2$. Our AGN sample is optically fainter compared to the quasars used to search for DLAs in the past. In our optical spectra obtained using the Southern African Large Telescope (SALT) and the Nordic Optical Telescope (NOT), we detect 5 intervening (redshift path$\sim9.3$) and 2 proximate DLAs. This is slightly excessive compared to the statistics based on optically selected quasars. The non-detection of HI 21-cm absorption from these DLAs suggests small CNM covering fraction around galaxies at $z>2$.
description: 23 pages, 14 figures and 4 tables; accepted in ApJS
Turismo sexual y eventos deportivos
Creators: name: Muñoz González, Beatriz
name: Rivero Jiménez, Borja
name: García Perales, Nuria
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: The 2006 World Cup in Germany was known as the World Cup of Prostitution. It is estimated that 10,000 girls and women were taken to Miami to sexually exploit them in the 2010 Super Bowl. This paper analyzes a phenomenon of growing interest and concern both in the field of Human Rights and social research: sex tourism linked to great sporting events. Especially serious is its connection with human trafficking networks of people, women and children. It also reviews the prevention and reporting campaigns that some NGOs have begun to develop worldwide, especially since the 2014 World Cup in Brazil
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
Barcelona runner: turismo, ciudad y cuerpos posthumanos
Creators: name: Herrera Altamirano, Elisa
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: In this article I present acritical reading of urban running in Barcelona based on mobile ethnographic fieldwork carried out during 2015-2018. Through the analysis of specific tourist expressions of running narrated and lived by recreational runners and political actors. I explain how runners ́ bodies relate and perform constantly with the urban context to become more-than-human materialities. The exploration of touristic everyday life running practices, the design of the marathon route in Barcelona and the running tours in the city reveal how runners ́ embodied experiences of pain and pleasure, feelings of belonging, solidarity, celebration and imagination of the future emerge in continuity with the urban context. Following this, we can acknowledge how contemporary sport tourism trends vehicle complex forms of embodied subjectivity. Hence, I encourage a reading of the body in its ‘relational’ sense, emplaced (Howes, 2005; Pink, 2011) and in intra-action (Barad, 2007) with diverse human and non-human materialities. In addition, I propose the figuration ‘body-citycontinuum’ as an analytical tool that contribute to the purpose of broadening our understanding of corporality and to foster the creation of new economies of representation of the body in social sciences from a posthumanist standpoint.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
Measuring surface tensions of soft solids with huge contact-angle hysteresis
Creators: name: Kim, Jin Young
name: Heyden, Stefanie
name: Gerber, Dominic
name: Bain, Nicolas
name: Dufresne, Eric R.
name: Style, Robert W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The equilibrium contact angle of a droplet resting on a solid substrate can reveal essential properties of the solid's surface. However, when the motion of a droplet on a surface shows significant hysteresis, it is generally accepted that the solid's equilibrium properties cannot be determined. Here, we describe a method to measure surface tensions of soft solids with strong wetting hysteresis. With independent knowledge of the surface tension of the wetting fluid and the linear-elastic response of the solid, the solid deformations under the contact line and the contact angle of a single droplet together reveal the difference in surface tension of the solid against the liquid and vapor phases. If the solid's elastic properties are unknown, then this surface tension difference can be determined from the change in substrate deformations with contact angle. These results reveal an alternate equilibrium contact angle, equivalent to the classic form of Young-Dupré, but with surface tensions in place of surface energies. We motivate and apply this approach with experiments on gelatin, a common hydrogel.
description: 5 Figures
New expanding Ricci solitons starting in dimension four
Creators: name: Nienhaus, Jan
name: Wink, Matthias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C25, 53E20

description: We prove that there exists a gradient expanding Ricci soliton asymptotic to any given cone over the product of a round sphere and a Ricci flat manifold. In particular we obtain asymptotically conical expanding Ricci solitons with positive scalar curvature on $\mathbb{R}^3 \times S^1.$ More generally we construct continuous families of gradient expanding Ricci solitons on trivial vector bundles over products of Einstein manifolds with arbitrary Einstein constants.
description: 15 pages
Mass Independent Textures and Symmetry
Creators: name: Lam, C. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A mass-independent texture is a set of linear relations of the fermion mass-matrix elements which imposes no constraint on the fermionic masses nor the Majorana phases. Magic and 2-3 symmetries are examples. We discuss the general construction and the properties of these textures, as well as their relation to the quark and neutrino mixing matrices. Such a texture may be regarded as a symmetry, whose unitary generators of the symmetry group can be explicitly constructed. In particular, the symmetries connected with the tri-bimaximal neutrino mixing matrix are discussed, together with the physical consequence of breaking one symmetry but preserving another.
description: Version to be published in PRD. References modified, and a misprint in eq (9) is corrected
Los Raids de Aventura como motor dinamizador de entornos naturales en Extremadura
Creators: name: Morenas Martín, Jesús
name: Del Campo, Vicente Luis
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: The region of Extremadura, as other zones in Spain, has carried out different plans for the development of natural areas in the last decades, such as the protection of natural spaces. These programs have had some impact on society, but they have not prevented the gradual depopulation of the rural territory. This problem is bigger if we add the reduction of the activities related to the primary sector such as the agriculture and livestock. In this context, new opportunities have emerged for the development of sectors or activities of social and cultural nature, such as the physical activities in the natural environment or active tourism. The multi-adventure raids are sport competitions which include a multitude of participants performing orientation races through a large area of natural environment, mainly on foot or by mountain bike. This activity also includes other disciplines such as climbing, rappel, archery, zip lines, offering different physical activities for the general public. Extremadura has developed its own league of raids (LEXRA), hosting several national tests of these sport events and attracting many participants. This sustainable and friendly activity with the natural environment is a great tool for the boosting of natural spaces. For this reason, many villages are already committed in the development of these sports events to boost natural spaces, having a social benefit and an impact for their economy.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
Arachidonic acid as a potential intracellular regulator of aromatase activity in human term trophoblast
Creators: name: Lin, Show Whei
Publisher: name: University of British Columbia
Year: 2008

description: The potential role of arachidonic acid as an intracellular regulator of aromatase activity of human term trophoblast was investigated in short term (3 h) incubations. Melittin, a known activator of phospholipase A₂,suppressed the aromatase activity of physically dissociated trophoblast cells in a dose-dependent manner. Indomethacin (10⁻⁴M), a cyclooxygenase inhibitor of arachidonic acid metabolism, suppressed aromatase activity and potentiated the inhibitory effect of melittin (P<0.05). Nordihydroguaiaretic acid (NDGA) alone, a lipoxygenase inhibitor, also decreased aromatase activity but did not affect the inhibitory effect of melittin. The addition of exogenous arachidonic acid (10⁻⁴M) to trophoblast cells decreased aromatase activity in a dose-dependent manner (P<0.01). Arachidonic acid metabolites such as prostaglandin F₂a, (10⁻⁶M) and leukotriene B4 (10⁻⁶M) had no effect on aromatase activity. The presence of hypoxanthine (10⁻³M) and xanthine oxidase (10 mU/ml), also attenuated aromatase activity in trophoblast cells (P<0.01), presumably via an elevation of intracellular free arachidonic acid concentration. Interestingly, melittin suppressed aromatase activity during short term (3 h) incubation but was ineffective on trophoblast cells from 24 h and 48 h incubations. The role of cAMP in the action of aromatase activity was investigated. Cyclic AMP had no effect on 17ϐ-estradiol production in human trophoblast cells during short term (3 h) incubation. But cAMP enhanced 17ϐ-estradiol production during 24h and 48 h incubations. These results suggested that aromatase activity of freshly obtained term trophoblast cells was at or near maximal capacity or cAMP may not have been able to exert its steroidogenic action on human term trophoblast cells rapidly enough to be detected during a 3 h incubation. Cyclic AMP stimulated aromatase activity on human term trophoblast cells during 24 h and 48 h incubation, suggesting that cAMP achieves its actions by increasing protein and mRNA synthesis. Effects of arachidonic acid, cAMP, hCG and 25-OH-cholesterol on progesterone production were investigated. None of them had effects on progesterone production during a 3 h incubation. These observations suggest that fresh term trophoblast cells may perform at or near optimal capacity on progesterone production. The results supported the potential intracellular regulatory role of arachidonic acid on aromatase activity in human term placenta.
Dynamical chaos in the integrable Toda chain induced by time discretization
Creators: name: Danieli, Carlo
name: Yuzbashyan, Emil A.
name: Altshuler, Boris L.
name: Patra, Aniket
name: Flach, Sergej
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We use the Toda chain model to demonstrate that numerical simulation of integrable Hamiltonian dynamics using time discretization destroys integrability and induces dynamical chaos. Specifically, we integrate this model with various symplectic integrators parametrized by the time step $τ$ and measure the Lyapunov time $T_Λ$ (inverse of the largest Lyapunov exponent $Λ$). A key observation is that $T_Λ$ is finite whenever $τ$ is finite but diverges when $τ\rightarrow 0$. We compare the Toda chain results with the nonitegrable Fermi-Pasta-Ulam-Tsingou chain dynamics. In addition, we observe a breakdown of the simulations at times $T_B \gg T_Λ$ due to certain positions and momenta becoming extremely large (``Not a Number''). This phenomenon originates from the periodic driving introduced by symplectic integrators and we also identify the concrete mechanism of the breakdown in the case of the Toda chain.
description: 13 pages, 7 figures
The structure of the free energy surface of coarse-grained off-lattice protein models
Creators: name: Akturk, E.
name: Olgar, H. Arkin
name: Celik, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have performed multicanonical simulations of hydrophobic-hydrophilic heteropolymers with a simple effective, coarse-grained off-lattice model to study the structure and the topology of the energy surface. The multicanonical method samples the whole rugged energy landscape, in particular the low-energy part, and enables one to better understand the critical behaviors and visualize the folding pathways of the considered protein model.
description: 12pages, 6 pages
Single-cell RNA-seq of differentiating human induced pluripotent stem cells reveals dynamic genetic effects on gene expression
Creators: name: McCarthy, Davis J.
Publisher: name: F1000 Research Limited
Year: 2019

description: Developments in stem cell biology enable the study of cell fate decisions in expression, ASE, and eQTL dynamics across pseudotime. (B) Summary of the identified cluster dynamics, (C) Exemplars of the dynamic gene expression and dynamic genetic effects clusters shown in A. Shaded regions indicate standard error (+/- 1 SEM). Pseudo-temporal ordering yields stage-specific eQTLs early human development that are impossible to study in vivo. We use human iPSCs from 125 donors, a pooled experimental design, and single-cell RNA-seq to study population variation of endoderm differentiation. We utilise heterogeneity in the genetic background across individuals to map hundreds of expression quantitative trait loci that influence expression dynamically during differentiation and across cellular contexts.
Pasolini e il mistero della scena
Creators: name: Puppa, Paolo
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

In his usually provocative manner, Pasolini offers us a stage that appears to go as far as to deny stage itself. Here, even if in a ambiguous way, a deep nostalgia of the lost rites forces his tales toward a true mistery. Actually, besides the adolescent poetry written in Casarsa and the dialectal Massenspiel Turcs tal Friul, furtherly after the Manifesto del nuovo teatro (in opposition to Talk Theatre and Gesture Theatre) and the masterpieces dealing with the classic miths like Affabulazione and Orgia, this analysis above all focuses on the fundamental work in progress, Nel ’46. The fact is that this tourmented and continuously amended play presents both male and female roles and the characters of son/sister/mother profoundly twisted between them. We can say that we are faced with a family in the the night, that is a sort of dream or of nightmare which settles the lines and the plot itself. Consequently, obsessive metaphors and personal myths (in Charles Mauron’s terms) occupy the Pasolini’s stage. So, his troubled relationship with the ghost of Jesus Christ on the cross (in spite of his ostentatious atheism), his morbid desire (and paradoxical prophecy) to be killed by his young lovers, the tragic sacrifice of his brother and the painful mourning together with the mother are all attempts to make a sacred «aura» come back in the modern theatre. For sacred, of course, I mean the mixture of sublime and obscene, in a pre-Christian horizon.

description: Venezia Arti
Imprints from a Riemann-Cartan space-time on the energy levels of Dirac spinors
Creators: name: Cabral, Francisco
name: Lobo, Francisco S. N.
name: Rubiera-Garcia, Diego
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we investigate the effects of the torsion-fermionic interaction on the energy levels of fermions within a Riemann-Cartan geometry using a model-independent approach. We consider the case of fermions minimally coupled to the background torsion as well as non-minimal extensions via additional couplings with the vector and axial fermionic currents which include parity-breaking interactions. In the limit of zero-curvature, and for the cases of constant and spherically symmetric torsion, we find a Zeeman-like effect on the energy levels of fermions and anti-fermions depending on whether they are aligned/anti-aligned with respect to the axial vector part of the torsion (or to specific combination of torsion quantities), and determine the corresponding fine-structure energy transitions. We also discuss non-minimal couplings between fermionic fields and torsion within the Einstein-Cartan theory and its extension to include the (parity-breaking) Holst term. Finally we elaborate on the detection of torsion effects related to the splitting of energy levels in astrophysics, cosmology and solid state physics using current capabilities.
description: 12 pages; v2: minor corrections and additions
Hamilton-Jacobi method for Domain Walls and Cosmologies
Creators: name: Skenderis, Kostas
name: Townsend, Paul K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use Hamiltonian methods to study curved domain walls and cosmologies. This leads naturally to first order equations for all domain walls and cosmologies foliated by slices of maximal symmetry. For Minkowski and AdS-sliced domain walls (flat and closed FLRW cosmologies) we recover a recent result concerning their (pseudo)supersymmetry. We show how domain-wall stability is consistent with the instability of adS vacua that violate the Breitenlohner-Freedman bound. We also explore the relationship to Hamilton-Jacobi theory and compute the wave-function of a 3-dimensional closed universe evolving towards de Sitter spacetime.
description: 18 pages; v2: typos corrected, one ref added, version to appear in PRD
1+1=1. La porta-paesaggio di Nostalghia in alcuni oggetti tarkovskiani
Creators: name: Borin, Fabrizio
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The analysis about a shot especially significant of the cinema by russian director Andrej Tarkovskij, contributes to make clear the principle of his sophisticated cinematografic technique along with the very personal representation of style and themes. It’s the image proposed at 45’07” of italian version of Nostalghia, the so-called «italian film» of 1983 – filmed in Tuscany (Monterchi, Bagno Vignoni, the uncapped abbey of San Galgano) and Rome (Campidoglio and equestrian statue of emperor Marco Aurelio) – based on the poignant feeling of melancholy restlessness for far home. Definitely geared in the sense of author cinema and spiritual art, autobiographical and chromatically lyrical in developments of the narrative on the visual mode of Time, of Memory and of the claim of an «anti-reason» feeding Poetry in radical opposition to an inadequate Reason obtusely too materialistic of western society, the film is the penultimate tarkovskian masterpiece before the testamentary «crazy» Sacrifice (1986) and subsequent the apologue-invocation of Stalker (1979), against censorship, gulag and the anguish post Cernobyl: the dramatic sign of the abandonment of the loved russian heimat.

description: Venezia Arti
From urn models to zero-range processes: statics and dynamics
Creators: name: Godreche, C
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The aim of these lecture notes is a description of the statics and dynamics of zero-range processes and related models. After revisiting some conceptual aspects of the subject, emphasis is then put on the study of the class of zero-range processes for which a condensation transition arises.
description: Lecture notes for the Luxembourg Summer School 2005
Calderón's commutator on Stratified Lie groups
Creators: name: Chen, Yanping
name: Gong, Zhenbing
name: Li, Ji
name: McDonald, Edward
name: Zanin, Dmitriy
Publisher: name: arXiv
Year: 2023
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Motivated by the recent work of Gimperlein and Goffeng on Calderón's commutator on compact Heisenberg type manifolds and the related weak Schatten class estimates, we establish the characterisation of $L^p$ boundedness for Calderon's commutator on stratified Lie groups. We further study related weak Schatten class estimates for second order commutators on two step stratified Lie groups, which include the Heisenberg groups. This latter result is obtained using double operator integral techniques which are novel in this area.
description: simplified the proof
Restauri | Recuperi | Inventari
Creators: name: Benuzzi, Fabien
name: Guidolin, Francesca
name: Martinuzzi, Paola
name: Bellin, Maria Antonella
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The article is about four Evangelists sculptures decorating the facade of San Lorenzo’s church in Mestre (venice); works of the sculptor Agostino Rubini (1558/59-before 1592), they were offered by a benefactor at the beginning of 19th

description: Venezia Arti
Early turbulence and pulsatile flows enhance diodicity of Tesla's macrofluidic valve
Creators: name: Nguyen, Quynh M.
name: Abouezzi, Joanna
name: Ristroph, Leif
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Applied Physics (physics.app-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Microfluidics has enabled a revolution in the manipulation of small volumes of fluids. Controlling flows at larger scales and faster rates, or $\textit{macrofluidics}$, has broad applications but involves the unique complexities of inertial flow physics. We show how such effects are exploited in a device proposed by Nikola Tesla that acts as a diode or valve whose asymmetric internal geometry leads to direction-dependent fluidic resistance. Systematic tests for steady forcing conditions reveal that diodicity turns on abruptly at Reynolds number $\textrm{Re} \approx 200$ and is accompanied by nonlinear pressure-flux scaling and flow instabilities, suggesting a laminar-to-turbulent transition that is triggered at unusually low $\textrm{Re}$. To assess performance for unsteady forcing, we devise a circuit that functions as an AC-to-DC converter, rectifier or pump in which diodes transform imposed oscillations into directed flow. Our results confirm Tesla's conjecture that diodic performance is boosted for pulsatile flows. The connections between diodicity, early turbulence and pulsatility uncovered here can inform applications in fluidic mixing and pumping.
description: 11 pages, 8 figures
Sull’uso dell’arpa nella «scena fantastica» di Shakespeare: il «sogno» musicale di Britten
Creators: name: Robles, Alessandra
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

This work aims at delineating the musical and dramaturgical concepts of «fantastic scene» both in Shakespeare’s comedy A Midsummer Night’s Dream and in the homonymous opera with music by the English composer Britten, thanks to a particular instrument, that is the harp. Through the dramaturgical analysis of the work and the anthropological meaning that Shakespeare gives to the symbols featuring in his comedy, the concept of «fantastic scene» is carried on consisting of the introduction in the plot of a supernatural or of a highly symbolic element that inexorably influences both the events and the character’s destinies. The similarities and the differences between the two works are worth an analysis. In Shakespeare the dream is combined with an excellent plot characterized by a magic atmosphere. Likewise, with a subtle but deep difference, in Britten’s work everything can happen in the midsummer night. In this case the night-time is the moment when the truth comes out in a state of total unconsciousness. This is the deepest and most hidden kind of truth and everything can magically happen so that the fantastic scene is carried out in the opera. In addition, an important theatrical and popular aspect can be found in both the works: the theatre, be it prose or musical theatre, is a visual art representing situations, feelings and everyday life conditions. Although in Shakespeare and Britten’s works we can’t talk about social drama in a strictly anthropological sense, it can be looked for in the fantastic dimension between reality and fiction than can be found in the dream. This aspect is masterfully expressed thanks to appropriate stage and musical choices both by Shakespeare and Britten that, in so doing, convey the concept of fantastic scene. As for music, the fantastic scene in Britten’s opera features the use of the harp which accompanies the whole scene and its developing with its spelling and special timbral effects masterfully chosen by the composer. To explain this musical aspect exhaustively, the symbolic structure has been analyzed starting from one of the most important composers and harpists in the 20th century, that is Carlos Salzedo, from which Britten has taken its musical hints featuring through all his A Midsummer Night’s Dream.

description: Venezia Arti
Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
Creators: name: Büchler, H. P.
name: Demler, E.
name: Lukin, M.
name: Micheli, A.
name: Prokof'ev, N.
name: Pupillo, G.
name: Zoller, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss techniques to tune and shape the long-range part of the interaction potentials in quantum gases of polar molecules by dressing rotational excitations with static and microwave fields. This provides a novel tool towards engineering strongly correlated quantum phases in combination with low dimensional trapping geometries. As an illustration, we discuss a 2D crystalline phase, and a superfluid-crystal quantum phase transition.
description: 4 pages, 3 figures
On the Hubble constant tension in the SNe Ia Pantheon sample
Creators: name: Dainotti, Maria Giovanna
name: De Simone, Biagio
name: Schiavone, Tiziano
name: Montani, Giovanni
name: Rinaldi, Enrico
name: Lambiase, Gaetano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Hubble constant ($H_0$) tension between Type Ia Supernovae (SNe Ia) and Planck measurements ranges from 4 to 6 $σ$. To investigate this tension, we estimate $H_{0}$ in the $Λ$CDM and $w_{0}w_{a}$CDM models by dividing the Pantheon sample, the largest compilation of SNe Ia, into 3, 4, 20 and 40 bins. We fit the extracted $H_{0}$ values with a function mimicking the redshift evolution: $g(z)={H_0}(z)=\tilde{H}_0/(1+z)^α$, where $α$ indicates an evolutionary parameter and $\tilde{H}_0=H_0$ at $z=0$. We set the absolute magnitude of SNe Ia so that $H_0=73.5\,\, \textrm{km s}^{-1}\,\textrm{Mpc}^{-1}$, and we fix fiducial values for $Ω_{0m}^{ΛCDM}=0.298$ and $Ω_{0m}^{w_{0}w_{a}CDM}=0.308$. We find that $H_0$ evolves with redshift, showing a slowly decreasing trend, with $α$ coefficients consistent with zero only from 1.2 to 2.0 $σ$. Although the $α$ coefficients are compatible with 0 in 3 $σ$, this however may affect cosmological results. We measure locally a variation of $H_0(z=0)-H_0(z=1)=0.4\, \textrm{km s}^{-1}\,\textrm{Mpc}^{-1}$ in 3 and 4 bins. Extrapolating ${H_0}(z)$ to $z=1100$, the redshift of the last scattering surface, we obtain values of $H_0$ compatible in 1 $σ$ with Planck measurements independently of cosmological models and number of bins we investigated. Thus, we have reduced the $H_0$ tension from $54\%$ to $72\%$ for the $Λ$CDM and $w_{0}w_{a}$CDM models, respectively. If the decreasing trend of $H_0(z)$ is real, it could be due to astrophysical selection effects or to modified gravity.
description: 20 pages, 6 figures, 1 table; With corrected proofs and bibliography, to be published in ApJ
New dimensional estimates for subvarieties of linear algebraic groups
Creators: name: Bajpai, Jitendra
name: Dona, Daniele
name: Helfgott, Harald Andrés
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary: 20F69, 20G40, 05C25, Secondary: 14A10, 05C12

description: For every connected, almost simple linear algebraic group $G\leq\mathrm{GL}_{n}$ over a large enough field $K$, every subvariety $V\subseteq G$, and every finite generating set $A\subseteq G(K)$, we prove a general dimensional bound, that is, a bound of the form \[|A\cap V(\overline{K})|\leq C_{1}|A^{C_{2}}|^{\frac{\dim(V)}{\dim(G)}}\] with $C_{1},C_{2}$ depending only on $n,\mathrm{deg}(V)$. The dependence of $C_1$ on $n$ (or rather on $\dim (V)$) is doubly exponential, whereas $C_2$ (which is independent of $\mathrm{deg}(V)$) depends simply exponentially on $n$. Bounds of this form have proved useful in the study of growth in linear algebraic groups since 2005 (Helfgott) and, before then, in the study of subgroup structure (Larsen-Pink: $A$ a subgroup). In bounds for general $V$ and $G$ available before our work, the dependence of $C_1$ and $C_2$ on $n$ was of exponential-tower type. We draw immediate consequences regarding diameter bounds for untwisted classical groups $G(\mathbb{F}_{q})$. (In a separate paper, we derive stronger diameter bounds from stronger dimensional bounds we prove for specific families of varieties $V$.)
description: 42 pages. Submitted
Robust Audio Anti-Spoofing with Fusion-Reconstruction Learning on Multi-Order Spectrograms
Creators: name: Wen, Penghui
name: Hu, Kun
name: Yue, Wenxi
name: Zhang, Sen
name: Zhou, Wanlei
name: Wang, Zhiyong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Multimedia (cs.MM)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Robust audio anti-spoofing has been increasingly challenging due to the recent advancements on deepfake techniques. While spectrograms have demonstrated their capability for anti-spoofing, complementary information presented in multi-order spectral patterns have not been well explored, which limits their effectiveness for varying spoofing attacks. Therefore, we propose a novel deep learning method with a spectral fusion-reconstruction strategy, namely S2pecNet, to utilise multi-order spectral patterns for robust audio anti-spoofing representations. Specifically, spectral patterns up to second-order are fused in a coarse-to-fine manner and two branches are designed for the fine-level fusion from the spectral and temporal contexts. A reconstruction from the fused representation to the input spectrograms further reduces the potential fused information loss. Our method achieved the state-of-the-art performance with an EER of 0.77% on a widely used dataset: ASVspoof2019 LA Challenge.
Calorie Restriction and Anorexia Nervosa: Molecular markers and pathogenetic mechanisms
Creators: name: Omodei, Daniela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Calorie restriction (CR) without malnutrition is the most robust intervention to slow aging and extend healthy lifespan in experimental model organisms. Several metabolic and molecular adaptations have been hypothesized to play a role in mediating the anti‐ aging effects of CR, including enhanced stress resistance, reduced oxidative stress and several neuroendocrine modifications. However, little is known about the independent effect of circulating factors in modulating key molecular pathways. In this study, we used sera collected from individuals practicing long‐ term CR and from age‐ and sex‐ matched individuals on a typical US diet to culture human primary fibroblasts and assess the effects on gene expression and stress resistance. We show that treatment of cultured cells with CR sera caused increased expression of stress‐ response genes and enhanced tolerance to oxidants. These cellular and molecular adaptations mirror some of the key effects of CR in animals, and further suggest that circulating factors contribute to the CR‐ mediated protection against oxidative stress and stress‐ response in humans as well. Anorexia nervosa (AN) is an excessive form of calorie restriction associated with pathological weight loss and alterations of the immune system. However, AN patients seem to be protected from common viral infections. In this study, we investigated the metabolic and molecular adaptations induced by sustained extreme CR in the peripheral blood mononuclear cells (PBMCs) of patients with restrictive alimentary AN. Compared with controls, AN patients had significantly fewer leucocytes, lymphocytes and NK cells, lower serum concentrations of leptin, IGF-1 and sTNFR1, and higher levels of adiponectin, sCD40L and sICAM-1 (p < 0.05). IL-1β, TNFα, and IL-6 produced by PBMC cultured with autologous serum for 48 h were significantly lower in AN patients than in controls (p < 0.01). Moreover, glycolysis and mitochondrial respiration were lower, and the antioxidant transcriptional profile was higher in the PBMCs of AN patients. Fibroblasts cultured in serum from AN patients showed a 24% increase in resistance to H2O2 damage. In conclusion, extreme CR in AN patients is associated with a reduction in several immune cell populations, but with higher antioxidant potential, stress resistance and an anti-inflammatory status.
Transition-metal dimers and physical limits on magnetic anisotropy
Creators: name: Strandberg, Tor O.
name: Canali, Carlo. M.
name: MacDonald, Allan H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent advances in nanoscience have raised interest in the minimum bit size required for classical information storage, i.e. for bistability with suppressed quantum tunnelling and energy barriers that exceed ambient temperatures. In the case of magnetic information storage much attention has centred on molecular magnets[1] with bits consisting of ~ 100 atoms, magnetic uniaxial anisotropy energy barriers ~ 50 K, and very slow relaxation at low temperatures. In this article we draw attention to the remarkable magnetic properties of some transition metal dimers which have energy barriers approaching ~ 500 K with only two atoms. The spin dynamics of these ultra small nanomagnets is strongly affected by a Berry phase which arises from quasi-degeneracies at the electronic Highest Occupied Molecular Orbital (HOMO) energy. In a giant spin-approximation, this Berry phase makes the effective reversal barrier thicker. [1] Gatteschi, D., Sessoli, R. & Villain, J. Molecular Nanomagnets. (Oxford, New York 2006).
description: 14 pages, 1 figure
The Post-impact Evolution of the X-ray Emitting Gas in SNR 1987A Viewed by XMM-Newton
Creators: name: Sun, Lei
name: Vink, Jacco
name: Chen, Yang
name: Zhou, Ping
name: Prokhorov, Dmitry
name: Puhlhofer, Gerd
name: Malyshev, Denys
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since 1996 the blast wave driven by SN 1987A has been interacting with the dense circumstellar material, which provides us with a unique opportunity to study the early evolution of a newborn supernova remnant (SNR). Based on the XMM-Newton RGS and EPIC-pn X-ray observations from 2007 to 2019, we investigated the post-impact evolution of the X-ray emitting gas in SNR 1987A. The hot plasma is represented by two non-equilibrium ionization components with temperature of $\sim0.6$ keV and $\sim2.5$ keV. The low-temperature plasma has a density $\sim2400$ cm$^{-3}$, which is likely dominated by the lower density gas inside the equatorial ring (ER). The high-temperature plasma with a density $\sim550$ cm$^{-3}$ could be dominated by the H II region and the high-latitude material beyond the ring. In the last few years, the emission measure of the low-temperature plasma has been decreasing, indicating that the blast wave has left the main ER. But the blast wave is still propagating into the high-latitude gas, resulting in the steadily increase of the high-temperature emission measure. In the meantime, the average abundances of N, O, Ne, and Mg are found to be declining, which may reflect the different chemical compositions between two plasma components. We also detected the Fe K lines in most of the observations, showing increasing flux and centroid energy. We interpret the Fe K lines as from a third hot component, which may come from the reflected shock-heated gas or originate from Fe-rich ejecta clumps, shocked by the reverse shock.
description: 33 pages, 10 figures, accepted for publication in ApJ
Rancheri Allotment (B-roll)
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording contains a discussion of the drive to Rancheri and the individuals who lived there. 35:55 minutes into the recording, the speakers arrive at the Rancheri cemetery and say a prayer for those who lay there.
A Statistical Measure of a Population's Propensity to Engage in Post-Purchase Online Word-of-Mouth
Creators: name: Dellarocas, Chrysanthos
name: Narayan, Ritu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The emergence of online communities has enabled firms to monitor consumer-generated online word-of-mouth (WOM) in real-time by mining publicly available information from the Internet. A prerequisite for harnessing this new ability is the development of appropriate WOM metrics and the identification of relationships between such metrics and consumer behavior. Along these lines this paper introduces a metric of a purchasing population's propensity to rate a product online. Using data from a popular movie website we find that our metric exhibits several relationships that have been previously found to exist between aspects of a product and consumers' propensity to engage in offline WOM about it. Our study, thus, provides positive evidence for the validity of our metric as a proxy of a population's propensity to engage in post-purchase online WOM. Our results also suggest that the antecedents of offline and online WOM exhibit important similarities.
description: Published at http://dx.doi.org/10.1214/088342306000000169 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On the determinant of the $Q$-walk matrix of rooted product with a path
Creators: name: Yan, Zhidan
name: Mao, Lihuan
name: Wang, Wei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C50

description: Let $G$ be an $n$-vertex graph and $Q(G)$ be its signless Laplacian matrix. The $Q$-walk matrix of $G$, denoted by $W_Q(G)$, is $[e,Q(G)e,\ldots,Q^{n-1}(G)e]$, where $e$ is the all-one vector. Let $G\circ P_m$ be the graph obtained from $G$ and $n$ copies of the path $P_m$ by identifying the $i$-th vertex of $G$ with an endvertex of the $i$-th copy of $P_m$ for each $i$. We prove that, $$\det W_Q(G\circ P_m)=\pm (\det Q(G))^{m-1}(\det W_Q(G))^m$$ holds for any $m\ge 2$. This gives a signless Laplacian counterpart of the following recently established identity [17]: $$\det W_A(G\circ P_m)=\pm (\det A(G))^{\lfloor\frac{m}{2}\rfloor}(\det W_A(G))^m,$$ where $A(G)$ is the adjacency matrix of $G$ and $W_A(G)=[e,A(G)e,\ldots,A^{n-1}(G)e]$. We also propose a conjecture to unify the above two equalities.
description: 16 pages, 1 figure
Satellite Systems around Galaxies in Hydrodynamic Simulations
Creators: name: Libeskind, Noam I
name: Cole, Shaun
name: Frenk, Carlos S
name: Okamoto, Takashi
name: Jenkins, Adrian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the properties of satellite galaxies formed in N-body/SPH simulations of galaxy formation in the $Λ$CDM cosmology. The simulations include the main physical effects thought to be important in galaxy formation and, in several cases, produce realistic spiral discs. In total, a sample of 9 galaxies of luminosity comparable to the Milky Way was obtained. At magnitudes brighter than the resolution limit, $M_V=-12$, the luminosity function of the satellite galaxies in the simulations is in excellent agreement with data for the Local Group. The radial number density profile of the model satellites, as well as their gas fractions also match observations very well. In agreement with previous N-body studies, we find that the satellites tend to be distributed in highly flattened configurations whose major axis is aligned with the major axis of the (generally triaxial) dark halo. In 2 out of 3 systems with sufficiently large satellite populations, the satellite system is nearly perpendicular to the plane of the galactic disc, a configuration analogous to that observed in the Milk Way. The discs themselves are perpendicular to the minor axis of their host halos in the inner parts, and the correlation between the orientation of the galaxy and the shape of the halo persists even out to the virial radius. However, in one case the disc's minor axis ends up, at the virial radius, perpendicular to the minor axis of the halo. The angular momenta of the galaxies and their host halo tend to be well aligned.
description: MNRAS, submitted