cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin-flip-driven giant magneto-transport in A-type antiferromagnet NaCrTe2
Creators: name: Wang, Junjie
name: Deng, Jun
name: Liang, Xiaowei
name: Gao, Guoying
name: Ying, Tianping
name: Tian, Shangjie
name: Lei, Hechang
name: Song, Yanpeng
name: Chen, Xu
name: Guo, Jian-gang
name: Chen, Xiaolong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: For anisotropic magneto-resistance (AMR) effect, its value synergistically depends on the magnitudes of magneto-resistance (MR) and magneto-crystalline anisotropy energy (MAE) simultaneously. In a magnetic material, the concurrence of gigantic AMR and MR signals is rather difficult due to weak spin-lattice coupling and small MAE. Here we report the considerable magneto-transport effect in layered A-type antiferromagnetic (AFM) NaCrTe2 by realigning the spin configurations. By applying H, the antiparallel spins of adjacent layers are flipped to ferromagnetic (FM) coupling either Ising-type along c-axis or XY-type within ab-plane. Theoretical calculations reveal that the energy bandgap narrows from 0.39 eV to 0.11 eV, accompanying a transition from semiconductor (high-R state) and half-semiconductor (low-R state), respectively. Thus, gigantic negative MR ratio of -90% is obtained at 10 K. More importantly, the decrement of R along H//c is far quicker than that of H//ab because the MAE of Ising-FM state is 1017 μeV/Cr3+ lower than that of XY-FM. The distinct trends result in the AMR ratio of 732% at 10 K, which is the record value to our best knowledge. These findings unravel the intrinsic origin of magneto in NaCrTe2 and will stimulate us to exploring the H-sensitive transport property in more AFM materials.
description: 16 pages, 4 figures
Polarization and angular distribution of the radiation emitted in laser-assisted recombination
Creators: name: Bivona, Saverio
name: Bonanno, Giovanni
name: Burlon, Riccardo
name: Leone, Claudio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The effect of an intense external linear polarized radiation field on the angular distributions and polarization states of the photons emitted during the radiative recombination is investigated. It is predicted, on symmetry grounds, and corroborated by numerical calculations of approximate recombination rates, that emission of elliptically polarized photons occurs when the momentum of the electron beam is not aligned to the direction of the oscillating field. Moreover, strong modifications to the angular distributions of the emitted photons are induced by the external radiation field.
description: 5 pages, 3 figures
title: NUIG-DSI at the WebNLG+ challenge: Leveraging transfer learning for RDF-to-text generation
Creators: name: Pasricha, Nivranshu
name: Arcan, Mihael
name: Buitelaar, Paul
Publisher: name: Association for Computational Linguistics
Year: 2020
Subjects: subject: WebNLG
subject: RDF-to-text generation

description: This paper describes the system submitted by NUIG-DSI to the WebNLG+ challenge 2020 in the RDF-to-text generation task for the English language. For this challenge, we leverage transfer learning by adopting the T5 model architecture for our submission and fine-tune the model on the WebNLG+ corpus. Our submission ranks among the top five systems for most of the automatic evaluation metrics achieving a BLEU score of 51.74 over all categories with scores of 58.23 and 45.57 across seen and unseen categories respectively.
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000, F. 595 Palermo, Servizio Geologico d'Italia - ISPRA
Creators: name: Catalano, R.
name: Avellone, G.
name: Basilone, L.
name: Contino, A.
name: Agate, M.
Publisher: name: INFN Open Access Repository
Year: 2023
Subjects: carta geologica, Palermo, Sicilia, Regione Siciliana, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 595 Palermo della Carta Geologica d'Italia alla scala 1:50.000. 218 pp.
Young star clusters in interacting galaxies - NGC 1487 and NGC 4038/4039
Creators: name: Mengel, Sabine
name: Lehnert, Matthew D.
name: Thatte, Niranjan A.
name: Vacca, William D.
name: Whitmore, Brad
name: Chandar, Rupali
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We estimate the dynamical masses of several young (~10 Myr) massive star clusters in two interacting galaxies, NGC 4038/4039 ("The Antennae") and NGC 1487, under the assumption of virial equilibrium. These are compared with photometric mass estimates from K-band photometry and assuming a standard Kroupa IMF. The clusters were selected to have near-infrared colors dominated by red supergiants, and hence to be old enough to have survived the earliest phases of cluster evolution when the interstellar medium is rapidly swept out from the cluster, supported by the fact that there is no obvious Halpha emission associated with the clusters. All but one of the Antennae clusters have dynamical and photometric mass estimates which are within a factor ~2 of one another, implying both that standard IMFs provide a good approximation to the IMF of these clusters, and that there is no significant extra-virial motion, as would be expected if they were rapidly dispersing. These results suggest that almost all of the Antennae clusters in our sample have survived the gas removal phase as bound or marginally bound objects. Two of the three NGC 1487 clusters studied here have M_dyn estimates which are significantly larger than the photometric mass estimates. At least one of these two clusters, and one in the Antennae, may be actively in the process of dissolving. The process of dissolution contributes a component of non-virial motion to the integrated velocity measurements, resulting in an estimated M_dyn which is too high relative to the amount of measured stellar light. The dissolution candidates in both galaxies are amongst the clusters with the lowest pressures/densities measured in our sample.
description: 17 pages, 14 Figures, A&A accepted
Rapid Quantum Squeezing by Jumping the Harmonic Oscillator Frequency
Creators: name: Xin, Mingjie
name: Leong, Wui Seng
name: Chen, Zilong
name: Wang, Yu
name: Lan, Shau-Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Quantum sensing and quantum information processing use quantum advantages such as squeezed states that encode a quantity of interest with higher precision and generate quantum correlations to outperform classical methods. In harmonic oscillators, the rate of generating squeezing is set by a quantum speed limit. Therefore, the degree to which a quantum advantage can be used in practice is limited by the time needed to create the state relative to the rate of unavoidable decoherence. Alternatively, a sudden change of harmonic oscillator's frequency projects a ground state into a squeezed state which can circumvent the time constraint. Here, we create squeezed states of atomic motion by sudden changes of the harmonic oscillation frequency of atoms in an optical lattice. Building on this protocol, we demonstrate rapid quantum amplification of a displacement operator that could be used for detecting motion. Our results can speed up quantum gates and enable quantum sensing and quantum information processing in noisy environments.
The post-transit tail of WASP-107b observed at 10830A
Creators: name: Spake, J. J.
name: Oklopčić, A.
name: Hillenbrand, L. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Understanding the effects of high-energy radiation and stellar winds on planetary atmospheres is vital for explaining the observed properties of close-in exoplanets. Observations of transiting exoplanets in the triplet of metastable helium lines at 10830 A allow extended atmospheres and escape processes to be studied for individual planets. We observed one transit of WASP-107b with NIRSPEC on Keck at 10830 A. Our observations, for the first time, had significant post-transit phase coverage, and we detected excess absorption for over an hour after fourth contact. The data can be explained by a comet-like tail extending out to ~7 planet radii, which corresponds to roughly twice the Roche lobe radius of the planet. Planetary tails are expected based on 3D simulations of escaping exoplanet atmospheres, particularly those including the interaction between the escaped material and strong stellar winds, and have been previously observed at 10830 A, in at least one other exoplanet. With both the largest mid-transit absorption signal and the most extended tail observed at 10830 A, WASP-107b remains a keystone exoplanet for atmospheric escape studies.
description: Submitted to the Astronomical Journal
Frequency-domain calculation of the self force: the high-frequency problem and its resolution
Creators: name: Barack, Leor
name: Ori, Amos
name: Sago, Norichika
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The mode-sum method provides a practical means for calculating the self force acting on a small particle orbiting a larger black hole. In this method, one first computes the spherical-harmonic $l$-mode contributions $F^μ_l$ of the "full force" field $F^μ$, evaluated at the particle's location, and then sums over $l$ subject to a certain regularization procedure. In the frequency-domain variant of this scheme the quantities $F^μ_l$ are obtained by fully decomposing the particle's self field into Fourier-harmonic modes $l m ω$, calculating the contribution of each such mode to $F^μ_l$, and then summing over $ω$ and $m$ for given $l$. This procedure has the advantage that one only encounters {\it ordinary} differential equations. However, for eccentric orbits, the sum over $ω$ is found to converge badly at the particle's location. This problem (reminiscent of the familiar Gibbs phenomenon) results from the discontinuity of the time-domain $F^μ_l$ field at the particle's worldline. Here we propose a simple and practical method to resolve this problem. The method utilizes the {\it homogeneous} modes $l m ω$ of the self field to construct $F^μ_l$ (rather than the inhomogeneous modes, as in the standard method), which guarantees an exponentially-fast convergence to the correct value of $F^μ_l$, even at the particle's location. We illustrate the application of the method with the example of the monopole scalar-field perturbation from a scalar charge in an eccentric orbit around a Schwarzschild black hole. Our method, however, should be applicable to a wider range of problems, including the calculation of the gravitational self-force using either Teukolsky's formalism, or a direct integration of the metric perturbation equations.
description: 20 pages, 10 eps figures; version published in PRD
Some estimates of the source counts at Planck Surveyor frequencies, using the 9C survey at 15 GHz
Creators: name: Waldram, E. M.
name: Bolton, R. C.
name: Pooley, G. G.
name: Riley, J. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used multi-frequency follow-up observations of a sample of extragalactic sources from the 9C survey at 15 GHz to make deductions about the expected source population at higher radio frequencies, such as those in the lower frequency bands of the Planck Surveyor satellite. In particular, we have made empirical estimates of the source counts at 22 GHz, 30 GHz, 43 GHz and 70 GHz and compared these with both known data and current theoretical predictions. We have also made an estimate of the count at the ALMA frequency of 90 GHz, with a view to assessing the possible population of point sources available for the phase calibration of that instrument.
description: 12 pages, 12 figures, accepted for publication in MNRAS
Discovery of orbital Eccentricity and Evidence for orbital Period Increase of SS433
Creators: name: Cherepashchuk, A. M.
name: Belinski, A. A.
name: Dodin, A. V.
name: Postnov, K. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The examination of long-term (1979-2020) photometric observations of SS433 enabled us to discover a non-zero orbital eccentricity of $e=0.05\pm 0.01.$ We have also found evidence for a secular increase in the orbital period at a rate of $\dot P_\mathrm{b}=(1.0\pm0.3)\times10^{-7}$ s s$^{-1}$. The binary orbital period increase rate makes it possible to improve the estimate of the binary mass ratio $q=M_\mathrm{X}/M_\mathrm{V}>0.8$, where $M_\mathrm{X}$ and $M_\mathrm{V}$ are the masses of the relativistic object and the optical star, respectively. For an optical star mass of 10${\rm M}_\odot$, the mass of the relativistic object (a black hole) is $M_\mathrm{X}>8{\rm M}_\odot$. A neutron star in SS433 is reliably excluded because in that case the orbital period should decrease, in contradiction to observations. The derived value of $\dot P_\mathrm{b}$ sets a lower limit on the mass-loss rate in the Jeans mode from the binary system $\gtrsim 7\times 10^{-6} {\rm M}_\odot\mathrm{yr}^{-1}$. The discovered orbital ellipticity of SS433 is consistent with the model of the slaved accretion disc tracing the precession of the misaligned optical star's rotational axis.
description: 5 pages, 4 figures + Appendix. Accepted for publication in MNRAS Letters
title: A Twitter sentiment gold standard for the Brexit referendum
Creators: name: Hürlimann, Manuela
name: Davis, Brian
name: Cortis, Keith
name: Freitas, André
name: Handschuh, Siegfried
name: Fernández, Sergio
Publisher: name: CEUR Workshop Proceedings
Year: 2016
Subjects: subject: Data analytics
subject: Brexit
subject: Referendum
subject: Twitter
subject: Gold standard

description: A Twitter Sentiment Gold Standard for the Brexit Referendum Manuela Hürlimann, Brian Davis Insight Centre for Data Analytics National University of Ireland Galway, Ireland {first.last}@insight-centre.org Keith Cortis, André Freitas, Siegfried Handschuh University of Passau Germany {first.last}@uni-passau.de Sergio Fernández Redlink GmbH Salzburg Austria sergio.fernandez@redlink.co ABSTRACT In this paper, we present a sentiment-annotated Twitter gold standard for the Brexit referendum. The data set consists of 2,000 Twitter messages (“tweets”) annotated with information about the sentiment expressed, the strength of the sentiment, and context dependence. This is a valuable resource for social media-based opinion mining in the context of political events.
Rebounding Cores to Build Star Cluster Multiple Populations
Creators: name: Parmentier, G.
name: Pasquali, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a novel approach to the riddle of star cluster multiple populations. Stars form from molecular cores. But not all cores form stars. Following their initial compression, such 'failed' cores re-expand, rather than collapsing. We propose that their formation and subsequent dispersal regulate the gas density of cluster-forming clumps and, therefore, their core and star formation rates. Clumps for which failed cores are the dominant core type experience star formation histories with peaks and troughs. In contrast, too few failed cores results in smoothly decreasing star formation rates. We identify three main parameters shaping the star formation history of a clump: the star and core formation efficiencies per free-fall time, and the time-scale on which failed cores return to the clump gas. The clump mass acts as a scaling factor. We use our model to constrain the density and mass of the Orion Nebula Cluster progenitor clump, and to caution that the star formation histories of starburst clusters may contain close-by peaks concealed by stellar age uncertainties. Our model generates a great variety of star formation histories. Intriguingly, the chromosome maps and O-Na anti-correlations of old globular clusters also present diverse morphologies. This prompts us to discuss our model in the context of globular cluster multiple stellar populations. More massive globular clusters exhibit stronger multiple stellar population patterns, which our model can explain if the formation of the polluting stars requires a given stellar mass threshold.
description: 23 pages, 9 figures, accepted by ApJ
Triaxiality in the interacting boson model
Creators: name: Sorgunlu, B.
name: Van Isacker, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The signature splitting of the $γ$-vibrational band of several Ru, Pd, Xe, Ba, Os and Pt isotopes is analyzed in the framework of the interacting boson model (IBM). The nuclei studied are close to the $γ$-unstable SO(6) limit of the IBM and have well-known $γ$ bands. It is shown that in most nuclei the signature splitting is better reproduced by the inclusion of a three-body interaction between the $d$ bosons. In none of the nuclei evidence for a stable, triaxial ground-state shape is found.
description: Accepted for publication in Nuclear Physics A
title: “Hanging out” with judicial and legal elites: Reflections on researching “up”
Creators: name: Kisakye, Diana
Publisher: name: Institute of African Studies (IAS)
Year: 2023
Subjects: subject: Researching courts
subject: hanging out
subject: judicial research
subject: informality
subject: African sub-regional courts
subject: 320
subject: 340

description: The challenges of researching “up” are widely acknowledged. Moreover, these hurdles are intensified for law and courts field investigators where the profession’s cherished virtues – protocol, hierarchy and decorum – hamper access to interviewees and could potentially be detrimental to rapport building for the researcher unfamiliar with courtroom formality. This paper draws on the author’s field experience to highlight the potential of the informal dimension of fieldwork – “hanging out” – in traversing some of the limits of researching legal and judicial elites. It teases out the complexities of studying judges as political actors and the peculiar circumstances of studying legal elites in close-knit circles. Through “hanging out” at relevant court events, strategically positioning oneself in social events and informally building rapport, the author gained access to spaces usually closed off to outsiders. By “hanging out” with judges, the author challenged her perceptions of absolute judicial fidelity to the law, interrogated their professed devotion to apoliticism and the experience humanised judges and helped her deal with her own discomfort with interviewing judges. The paper concludes by weighing the promises and limits of the informal approach to researching legal and judicial elites, pondering ethical considerations, the researcher’s positionality and the boundaries of continuous residence.
Aspects of higher curvature terms and U-duality
Creators: name: Bao, Ling
name: Cederwall, Martin
name: Nilsson, Bengt E. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss various aspects of dimensional reduction of gravity with the Einstein-Hilbert action supplemented by a lowest order deformation formed as the Riemann tensor raised to powers two, three or four. In the case of R^2 we give an explicit expression, and discuss the possibility of extended coset symmetries, especially SL(n+1,Z) for reduction on an n-torus to three dimensions. Then we start an investigation of the dimensional reduction of R^3 and R^4 by calculating some terms relevant for the coset formulation, aiming in particular towards E_8(8)/(Spin(16)/Z_2) in three dimensions and an investigation of the derivative structure. We emphasise some issues concerning the need for the introduction of non-scalar automorphic forms in order to realise certain expected enhanced symmetries.
description: 26 pp., 15 figs., plain tex
SILVERRUSH XI: Constraints on the Ly$α$ luminosity function and cosmic reionization at $z=7.3$ with Subaru/Hyper Suprime-Cam
Creators: name: Goto, Hinako
name: Shimasaku, Kazuhiro
name: Yamanaka, Satoshi
name: Momose, Rieko
name: Ando, Makoto
name: Harikane, Yuichi
name: Hashimoto, Takuya
name: Inoue, Akio
name: Ouchi, Masami
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Ly$α$ luminosity function (LF) of Ly$α$ emitters (LAEs) has been used to constrain the neutral hydrogen fraction in the intergalactic medium (IGM) and thus the timeline of cosmic reionization. Here we present the results of a new narrow-band imaging survey for $z=7.3$ LAEs in a large area of $\sim 3\ \mathrm{deg}^2$ with Subaru/Hyper Suprime-Cam. No LAEs are detected down to $L_{\mathrm{Ly}α}\simeq 10^{43.2}\ \mathrm{erg\ s^{-1}}$ in an effective cosmic volume of $\sim 2\times 10^6$ Mpc$^3$, placing an upper limit to the bright part of the $z=7.3$ Ly$α$ LF for the first time and confirming a decrease in bright LAEs from $z=7.0$. By comparing this upper limit with the Ly$α$ LF in the case of the fully ionized IGM, which is predicted using an observed $z=5.7$ Ly$α$ LF on the assumption that the intrinsic Ly$α$ LF evolves in the same way as the UV LF, we obtain the relative IGM transmission $T^\mathrm{IGM}_{\mathrm{Ly}α}(7.3)/T^\mathrm{IGM}_{\mathrm{Ly}α}(5.7)<0.77$, and then the volume-averaged neutral fraction $x_\mathrm{HI}(7.3)>0.28$. Cosmic reionization is thus still ongoing at $z=7.3$, being consistent with results from other $x_\mathrm{HI}$ estimation methods. A similar analysis using literature Ly$α$ LFs finds that at $z=6.6$ and 7.0 the observed Ly$α$ LF agrees with the predicted one, consistent with full ionization.
description: 18 pages, 12 figures, accepted for publication in ApJ
Fractal and knot-free chromosomes facilitate nucleoplasmic transport
Creators: name: Kim, Yeonghoon
name: Lizana, Ludvig
name: Jeon, Jae-Hyung
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Chromosomes in the nucleus assemble into hierarchies of 3D domains that, during interphase, share essential features with a knot-free condensed polymer known as the fractal globule (FG). The FG-like chromosome likely affects macromolecular transport, yet its characteristics remain poorly understood. Using computer simulations and scaling analysis, we show that the 3D folding and macromolecular size of the chromosomes determine their transport characteristics. Large-scale subdiffusion occurs at a critical particle size where the network of accessible volumes is critically connected. Condensed chromosomes have connectivity networks akin to simple Bernoulli bond percolation clusters, regardless of the polymer models. However, even if the network structures are similar, the tracer's walk dimension varies. It turns out that the walk dimension depends on the network topology of the accessible volume and dynamic heterogeneity of the tracer's hopping rate. We find that the FG structure has a smaller walk dimension than other random geometries, suggesting that the FG-like chromosome structure accelerates macromolecular diffusion and target-search.
title: In or out? Real-time monitoring of BREXIT sentiment on Twitter
Creators: name: Vasiliu, Laurentiu
name: Freitas, André
name: Caroli, Frederico
name: McDermott, Ross
name: Zarrouk, Manel
name: Hürlimann, Manuela
name: Davis, Brian
name: Daudert, Tobias
name: Khaled, Malek Ben
name: Byrne, David
name: Fernández, Sergio
name: Cavallini, Angelo
Publisher: name: CEUR Workshop Proceedings
Year: 2016
Subjects: subject: Data analytics
subject: SSIX
subject: Brexit
subject: Natural language processing
subject: Machine learning
subject: Opinion mining
subject: Twitter
subject: Sentiment analysis
subject: Political opinion mining
subject: Social Sentiment analysis financial IndeXes

description: The SSIX (Social Sentiment analysis financial IndeXes) project is a European Innovation Project sponsored by the European Commission under the Horizon 2020 framework. SSIX aims to provide European SMEs with a collection of easy to interpret tools to analyse and understand social media sentiment for any given topic regardless of locale or language. The United Kingdom’s recent referendum on European Union membership i.e. staying (“Bremain”) or leaving the EU (“Brexit”) was selected for the initial real-world test case for the validating the SSIX methodology and platform. In this paper, we describe the SSIX architecture in brief as well as analysis of the platforms X-Scores metrics and their application to Brexit, our initial experimental results and lessons learned.
Nuclear magic numbers: new features far from stability
Creators: name: Sorlin, O.
name: Porquet, M. -G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The main purpose of the present manuscript is to review the structural evolution along the isotonic and isotopic chains around the "traditional" magic numbers 8; 20; 28; 50; 82 and 126. The exotic regions of the chart of nuclides have been explored during the three last decades. Then the postulate of permanent magic numbers was de nitely abandoned and the reason for these structural mutations has been in turn searched for. General trends in the evolution of shell closures are discussed using complementary experimental information, such as the binding energies of the orbits bounding the shell gaps, the trends of the rst collective states of the even-even semi-magic nuclei, and the behavior of certain single-nucleon states. Each section is devoted to a particular magic number. It describes the underlying physics of the shell evolution which is not yet fully understood and indicates future experimental and theoretical challenges. The nuclear mean eld embodies various facets of the Nucleon- Nucleon interaction, among which the spin-orbit and tensor terms play decisive roles in the shell evolutions. The present review intends to provide experimental constraints to be used for the re nement of theoretical models aiming at a good description of the existing atomic nuclei and at more accurate predictions of hitherto unreachable systems.
description: to be published in Prog. Part. Nucl. Phys
Evaluating X-vector-based Speaker Anonymization under White-box Assessment
Creators: name: Champion, Pierre
name: Jouvet, Denis
name: Larcher, Anthony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the scenario of the Voice Privacy challenge, anonymization is achieved by converting all utterances from a source speaker to match the same target identity; this identity being randomly selected. In this context, an attacker with maximum knowledge about the anonymization system can not infer the target identity. This article proposed to constrain the target selection to a specific identity, i.e., removing the random selection of identity, to evaluate the extreme threat under a whitebox assessment (the attacker has complete knowledge about the system). Targeting a unique identity also allows us to investigate whether some target's identities are better than others to anonymize a given speaker.
The measurement errors in the Swift-UVOT and XMM-OM
Creators: name: Kuin, N. P. M.
name: Rosen, S. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The probability of photon measurement in some photon counting instrumentation, such as the Optical Monitor on the XMM-Newton satellite, and the UVOT on the Swift satellite, does not follow a Poisson distribution due to the detector characteristics, but a Binomial distribution. For a single-pixel approximation, an expression was derived for the incident countrate as a function of the measured count rate by Fordham, Moorhead and Galbraith (2000). We show that the measured countrate error is binomial, and extend their formalism to derive the error in the incident count rate. The error on the incident count rate at large count rates is larger than the Poisson-error of the incident count rate.
description: 4 pages, 2 postscript figures, submitted to MNRAS
Thermal Relics in Hidden Sectors
Creators: name: Feng, Jonathan L.
name: Tu, Huitzu
name: Yu, Hai-Bo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Dark matter may be hidden, with no standard model gauge interactions. At the same time, in WIMPless models with hidden matter masses proportional to hidden gauge couplings squared, the hidden dark matter's thermal relic density may naturally be in the right range, preserving the key quantitative virtue of WIMPs. We consider this possibility in detail. We first determine model-independent constraints on hidden sectors from Big Bang nucleosynthesis and the cosmic microwave background. Contrary to conventional wisdom, large hidden sectors are easily accommodated. A flavour-free version of the standard model is allowed if the hidden sector is just 30% colder than the observable sector after reheating. Alternatively, if the hidden sector contains a 1-generation version of the standard model with characteristic mass scale below 1 MeV, even identical reheating temperatures are allowed. We then analyze hidden sector freezeout in detail for a concrete model, solving the Boltzmann equation numerically and understanding the results from both observable and hidden sector points of view. We find that WIMPless dark matter indeed obtains the correct relic density for masses in the range keV < m_X < TeV. The upper bound results from the requirement of perturbativity, and the lower bound assumes that the observable and hidden sectors reheat to the same temperature and is raised to the MeV scale if the hidden sector is 10 times colder. WIMPless dark matter therefore generalizes the WIMP paradigm to the largest mass range possible for viable thermal relics and provides a unified framework for exploring dark matter signals across nine orders of magnitude in dark matter mass.
description: 20 pages, 8 figures; v2: references added; v3: published version
Variational analysis of HF dimer tunneling rotational spectra using an ab initio potential energy surface
Creators: name: Polyansky, Oleg L.
name: Ovsyannikov, Roman I.
name: Tennyson, Jonathan
name: Belov, Sergei P.
name: Tretyakov, Mikhail Yu.
name: Makhnev, Vladimir Yu.
name: Zobov, Nikolai F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: A very accurate, (HF)$_2$ potential energy surface (PES) due to Huang et al. (J. Chem. Phys., 150, 154302 (2019)) is used to calculate the energy levels of the HF dimer by solving the nuclear-motion Schrödinger equation using variational program WAVR4. Calculations on an extended range of rotational states show very good agreement with experimental data. In particular the known empirical rotational constants for the ground and some observed excited vibrational states are reproduced with an accuracy of about 50 MHz. This level of accuracy is shown to extend to higher excited inter-molecular vibrational states $v$ and higher excited rotational quantum numbers $(J,K_a)$. These calculations allow the assignment of 3 new $J$-branches in an HF dimer tunneling-rotation spectra recorded 30 years ago. These branches belong to excited $K_a$ = 4 state of the ground vibrational state, and $K_a$ = 0 states of excited inter-molecular vibrational states.
description: arXiv admin note: substantial text overlap with arXiv:2107.05969
The Role of Surface Plasmons in The Casimir Effect
Creators: name: Intravaia, F.
name: Henkel, C.
name: Lambrecht, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we study the role of surface plasmon modes in the Casimir effect. The Casimir energy can be written as a sum over the modes of a real cavity and one may identify two sorts of modes, two evanescent surface plasmon modes and propagative modes. As one of the surface plasmon modes becomes propagative for some choice of parameters we adopt an adiabatic mode definition where we follow this mode into the propagative sector and count it together with the surface plasmon contribution, calling this contribution "plasmonic". We evaluate analytically the contribution of the plasmonic modes to the Casimir energy. Surprisingly we find that this becomes repulsive for intermediate and large mirror separations. The contribution of surface plasmons to the Casimir energy plays a fundamental role not only at short but also at large distances. This suggests possibilities to taylor the Casimir force via a manipulation of the surface plasmons properties.
description: 12 pages, 8 figures, v2: minor changes, not including proofing
Yield safe: wheat production under Pinus Radiata
Creators: name: Pérez López, C.
name: Mosquera Losada M., R.
name: Ferreiro Domínguez N
Publisher: name: Zenodo
Year: 2019
Subjects: Silvoarable
density
thinning
volume
yield

description: Silvoarable practices are a type of agroforestry systems that allows combining a crop with
a Woody component. Tree layout designs considering distribution but also density modify
the productivity of both components. Yield safe was used to compare two tree densities of a
Pinus radiate stand considering the productivity of the tree and of wheat. Low initial tree
density (600 trees ha-1) aiming at high value timber production was compared with high
initial density (1333 trees ha-1) aiming at to produce a higher volume per hectare. Two different
thinning were programmed being the first the extraction of 20% of the trees in years 10,
15 and 20 and the second a 20 and a 10% in years 10 and 15. Stand volume was reduced
when low tree density were implemented compared with high tree density, while the contrary
happened with the tree volume and diameter. Tree diameter was higher when 20:20:20
thinning program was carried out in both tree densities, being the effect more noticeable when
low tree density was evaluated.
Ionic Sieving Through One-Atom-Thick 2D Material Enables Analog Nonvolatile Memory for Neuromorphic Computing
Creators: name: Nikam, Revannath Dnyandeo
name: Lee, Jongwon
name: Choi, Wooseok
name: Banerjee, Writam
name: Kwak, Myonghoon
name: Yadav, Manoj
name: Hwang, Hyunsang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The first report on ion transport through atomic sieves of atomically-thin 2D material is provided to solve critical limitations of electrochemical random-access memory (ECRAM) devices.
The mTOR 22C2 antibody performs poorly for both western blotting and immunoprecipitation
Creators: name: Cui, Yan
Publisher: name: F1000 Research Limited
Year: 2019

description: During our work, we doubted the specificity of the mTOR 22C2 antibody. The validation of 22C2 was not strict in the original publication. We therefore performed our own validation. 22C2 performed poorly for both western blotting (WB; against denatured mTOR) and immunoprecipitation (IP; against native mTOR); problematically, 22C2 reacted more strongly with a non-specific band slightly above mTOR, potentially misleading. Our results discourage further use of 22C2.
MPA Europe Report  Deliverable 3.1 Compile additional data and publish it into OBIS
Creators: name: Principe, Silas
name: Provoost, Pieter
name: Appeltans, Ward
name: Heikes-Knapton, Sunni
name: Addamo, Anna Maria
name: Costello, Mark J
Publisher: name: Zenodo
Year: 2023

description: Disclaimer: This is a deliverable not yet approved by the European Commission. This serves as a compilation of additional datasets of marine species occurrences for inclusion on Ocean Biodiversity Information System (OBIS) and preparation of workflows for future efficiencies to access marine data from the Global Biodiversity Information Facility (GBIF) and other sources. IMPORTANT NOTE: A new version will be available by end of 2024.
Ergodicité, collage et transport anomal
Creators: name: Leoncini, Xavier
name: Chandre, Cristel
name: Ourrad, Ouerdia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Nous nous intéressons à la convergence vers sa moyenne spatiale ergodique de la moyenne temporelle d'une observable d'un flow hamiltonien à un degré et demi de liberté avec espace des phases mixte. L'analyse est faite au travers de l'évolution de la distribution des moyennes en temps fini d'un ensemble de conditions initiales sur la même composante ergodique. Un exposant caractérisant la vitesse de convergence est défini. Les résultats indiquent que pour le système considéré la convergence évolue en $t^α$, avec $α=0.45$ pour alors qu'elle évolue en $t^{1/2}$ lorsque la dynamique est globalement chaotique dans l'espace des phases. De même une loi $α=1-β/2$ reliant cet exposant $α$ à l'exposant caractéristique du deuxième moment associé aux propriétés de transport $β$ est proposée et est vérifiée pour les cas considérés.
Spin pumping at terahertz nutation resonances
Creators: name: Mondal, Ritwik
name: Kamra, Akashdeep
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate spin pumping current injected by the nutation resonances of a ferromagnet or an antiferromagnet into an adjacent metal. Comparing the dc spin pumping current between the normal precession and nutation resonances, we find that the ratio of spin pumping current at the nutation resonance to the precession resonance is more pronounced in antiferromagnets. We further show that the spin pumping current injected by the nutation resonance is opposite in sign as compared to the normal precession mode. This could offer a useful experimental signature for identifying such nutation resonances. Analyzing the nature of the nutational eigenmodes, we show that the sign change in spin current is rooted in a reversal of the precession sense for the nutation mode(s). Furthermore, the nutational modes in antiferromagnets are found to be dominated by precession of one of the two sublattices only.
description: 7 pages, 6 figures
Shadows and precession of orbits in rotating Janis-Newman-Winicour spacetime
Creators: name: Solanki, Divyesh N.
name: Bambhaniya, Parth
name: Dey, Dipanjan
name: Joshi, Pankaj S.
name: Pathak, Kamlesh N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we construct the rotating Janis-Newman-Winicour (JNW) naked singularity spacetime using Newman-Janis Algorithm (NJA). We analyse NJA with and without complexification methods and find that the energy conditions do satisfied when we skip the complexification step. We study the shadows cast by rotating JNW naked singularity and compare them with the shadows cast by the Kerr black hole. We find that the shadow of the rotating naked singularity can be distinguished from the shadow of the Kerr black hole. While we analyse the precession of timelike bound orbits in rotating JNW spacetime, we find that it can have a negative (or opposite) precession, which is not present in the Kerr black hole case. These novel signatures of the shadow and orbital precession in rotating JNW naked singularity spacetime could be important in the context of the recent observation of the shadow of the M87 galactic center and the stellar dynamics of `S-stars' around Milkyway galactic center.
description: 14 pages, 13 figures
Holographic tachyon model
Creators: name: Zhang, Jingfei
name: Zhang, Xin
name: Liu, Hongya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose in this Letter a holographic model of tachyon dark energy. A connection between the tachyon scalar-field and the holographic dark energy is established, and accordingly, the potential of the holographic tachyon field is constructed. We show that the holographic evolution of the universe with $c\geqslant 1$ can be described completely by the resulting tachyon model in a certain way.
description: 5 pages, 2 figures; version to appear in Phys. Lett. B
The regular algebra of a poset
Creators: name: Ara, Pere
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16D70, 16E50

description: Let $K$ be a field. We attach to each finite poset $\mathbb P$ a von Neumann regular $K$-algebra $Q_K(\mathbb P)$ in a functorial way. We show that the monoid of isomorphism classes of finitely generated projective $Q_K(\mathbb P)$-modules is the abelian monoid generated by $\mathbb P$ with the only relations given by $p=p+q$ whenever $q
description: 47 pages. Revised version, to appear in Trans. Amer. Math. Soc
Flavor Symmetry for Quarks and Leptons
Creators: name: Frampton, Paul H.
name: Kephart, Thomas W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Present data on neutrino masses and mixing favor the highly symmetric tribimaximal neutrino mixing matrix which suggests an underlying flavor symmetry. A systematic study of non-abelian finite groups of order $g \leq 31$ reveals that tribimaximal mixing can be derived not only from the well known tetrahedral flavor symmetry $T \equiv A_4$, but also by using the binary tetrahedral symmetry $T^{'} \equiv SL_2(F_3)$ which does not contain the tetrahedral group as a subgroup. $T^{'}$ has the further advantage that it can also neatly accommodate the quark masses including a heavy top quark.
description: 12 pages latex. More typos corrected
РАЗВИТИЕ ПОПУЛЯРНЫХ ВИДОВ СПОРТА
Creators: name: Мухаметов, Ахмад
Publisher: name: Zenodo
Year: 2023

description: В данной статье исследуется развитие физического воспитания и массового спорта, рассматривается их исторический контекст, ключевые аспекты и современные тенденции. В нем подчеркивается важность физического воспитания в школах, рост массового спорта в общественных местах, а также роль государственной поддержки и политики. В статье также обсуждается акцент на здоровье и благополучии, инклюзивности, интеграции технологий, а также социальных и общественных преимуществах физического воспитания и общественного спорта.
title: Podcast Pinpointer: A Multimedia Semantic Web Application
Creators: name: Hogan, Aidan
name: Harth, Andreas
name: Breslin, John
Publisher: name: IEEE
Year: 2005
Subjects: subject: Semantic web
subject: Podcast
subject: Multimedia
subject: Semantic Web
subject: Podcasting
subject: Multimedia systems

description: In late 2004, a new method of publishing multimedia broadcasts on the Internet became popular called `Podcasting¿. Podcasting incorporates existing feed description formats, namely RSS 2.0, to deliver various enclosed files. This allows users to subscribe to feeds, receiving updates periodically. Originally intended for self- publishing and syndication of audio files, usage of Podcasting for video files has become quite popular. Indeed, thousands of Podcast feeds are now available, reaching a wide range of listeners and viewers. The rapid development of such a technology proves the demand for structured formats of describing multimedia data, facilitating location and retrieval of desirable media for consumers. This paper proposes such a format, using Semantic Web technologies, that has been used in a prototype application for the intelligent location and retrieval of Podcasts.
Creation of high-quality long-distance entanglement with flexible resources
Creators: name: He, Bing
name: Ren, Yu-Hang
name: Bergou, Janos A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a quantum repeater protocol that generates the elementary segments of entangled photons through the communication of qubus in coherent states. The input photons at the repeater stations can be in arbitrary states to save the local state preparation time for the operations. The flexibility of the scheme accelerates the generation of the elementary segments (close to the exact Bell states) to a high rate for practical quantum communications. The entanglement connection to long distances is simplified and sped up, possibly realizing an entangled pair of high quality within the time in the order of that for classical communication between two far-away locations.
description: 9 pages, 5 figures
Microscopic dynamics of lithium diffusion in single crystal of the solid-state electrolyte La$_{2/3-x}$Li$_{3x}$TiO$_{3}$ ($x=0.13$) studied by quasielastic neutron scattering
Creators: name: Matsuura, Masato
name: Fujiwara, Yasuyuki
name: Moriwake, Hiroki
name: Ohara, Koji
name: Kawakita, Yukinobu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quasielastic neutron scattering (QENS) measurements combined with first principles based moleculardynamics calculations were conducted to study the dynamics of Li$^+$ ions in a solid-state electrolyte La$_{2/3-x}$Li$_{3x}$TiO$_{3}$ (LLTO) with $x=0.13$. By using a large $^7$Li-enriched single crystal sample, a QENS signal was clearly observed along the three principal axes [110], [111], and [001] at a temperature ($T$) of 600 K. Wave vector dependence of the linewidth of the QENS signal along each direction was explained well using the Chudley-Elliot model for jumps between the A sites of the perovskite lattice through the bottleneck square, which was also supported by molecular dynamics calculations. At $T=600$ K, the estimated self-diffusion coefficient of Li$^+$ ($D_{Li}$) in the $ab$ plane [$D^{ab}_{Li}=(6.8\pm0.5)\times 10^{-6}$ cm$^2$/s] was slightly larger than that along the $c$ axis [$D^{c}_{Li}=(4.4\pm0.3)\times 10^{-6}$ cm$^2$/s], suggesting quasi-isotropic diffusion, that is, the three-dimensional diffusion of Li$^+$ ions. The decrease in $D_{Li}$ with decreasing $T$ was reasonably explained by a thermal activation process with the activation energy determined from ionic-conductivity measurements. Furthermore, the estimated values of the self-diffusion coefficient of Li$^+$ ions are comparable to those in the sulfide-based Li$^+$ ion conductor, Li$_{7}$P$_{3}$S$_{11}$, although its ionic conductivity is 10 times larger than that for LLTO. The obtained microscopic information on Li$^+$ diffusion in LLTO clarifies how to understand the Li conduction mechanism in LLTO and Li$_{7}$P$_{3}$S$_{11}$ in a unified manner and can provide a way to increase the Li$^+$ ionic conductivity in oxide-based solid electrolytes.
description: 7 pages, 6 figures, 2 tables with supplemental material (3 pages, 4 figures)