cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Demonstrating high-precision photometry with a CubeSat: ASTERIA observations of 55 Cancri e
Creators: name: Knapp, Mary
name: Seager, Sara
name: Demory, Brice-Olivier
name: Krishnamurthy, Akshata
name: Smith, Matthew W.
name: Pong, Christopher M.
name: Bailey, Vanessa P.
name: Donner, Amanda
name: Di Pasquale, Peter
name: Campuzano, Brian
name: Smith, Colin
name: Luu, Jason
name: Babuscia, Alessandra
name: Bocchino,, Robert L.
name: Loveland, Jessica
name: Colley, Cody
name: Gedenk, Tobias
name: Kulkarni, Tejas
name: Hughes, Kyle
name: White, Mary
name: Krajewski, Joel
name: Fesq, Lorraine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: ASTERIA (Arcsecond Space Telescope Enabling Research In Astrophysics) is a 6U CubeSat space telescope (10 cm x 20 cm x 30 cm, 10 kg). ASTERIA's primary mission objective was demonstrating two key technologies for reducing systematic noise in photometric observations: high-precision pointing control and high-stabilty thermal control. ASTERIA demonstrated 0.5 arcsecond RMS pointing stability and $\pm$10 milliKelvin thermal control of its camera payload during its primary mission, a significant improvement in pointing and thermal performance compared to other spacecraft in ASTERIA's size and mass class. ASTERIA launched in August 2017 and deployed from the International Space Station (ISS) November 2017. During the prime mission (November 2017 -- February 2018) and the first extended mission that followed (March 2018 - May 2018), ASTERIA conducted opportunistic science observations which included collection of photometric data on 55 Cancri, a nearby exoplanetary system with a super-Earth transiting planet. The 55 Cancri data were reduced using a custom pipeline to correct CMOS detector column-dependent gain variations. A Markov Chain Monte Carlo (MCMC) approach was used to simultaneously detrend the photometry using a simple baseline model and fit a transit model. ASTERIA made a marginal detection of the known transiting exoplanet 55 Cancri e ($\sim2$~\Rearth), measuring a transit depth of $374\pm170$ ppm. This is the first detection of an exoplanet transit by a CubeSat. The successful detection of super-Earth 55 Cancri e demonstrates that small, inexpensive spacecraft can deliver high-precision photometric measurements.
description: 23 pages, 9 figures. Accepted in AJ
Preferred and Actual Learning Experience of Teacher Education Students using MOLE as Learning Management System
Creators: name: Lucero, Lowell
name: Osuardo Pabatang Jr.
name: Rey Etom
Publisher: name: figshare
Year: 2020
Subjects: subject: 130306 Educational Technology and Computing
subject: FOS: Educational sciences

description: Philippine education continues to evolve including online course offerings. As innovations are constantly changing, teachers must continually adopt to new tools in designing online teaching materials. The use of web-based Learning Management Systems (LMSs) to manage online delivery of courses is one of the innovations used by most educators as the most appropriate technology for supporting and designing collaborative learning activities, particularly in higher education (West, Waddoups, & Graham, 2007; Yohon, Zimmerman, & Keeler, 2004). This study determine the student's preference and learning experience in terms of relevance, reflective thinking, interactivity, tutor support, peer support, and interpretation using MOLE as learning management system. It also examines the extent of students’ satisfaction on the online learning environment and consistency between the preferred and actual learning experience of the students using online learning course.The a survey questionnaire was distributed to students having online courses and analyzed using the SPSS software. Data shows that online learning which is relevant to their professional practice, tutors that enable them to participate in online learning; online learning that stimulates reflective thinking; engage in rich online educative discussions; have their peers provide sensitive and encouraging support online; and make sense in online communications with their peers and tutors as student preferences in online learning. On the actual learning experience, online learning unit provided to students is relevant to their professional practice; stimulates reflective thinking; often engage them in rich educative discussion online; tutor enables students to participate in online learning; peers provide sensitive and encouraging support online; and students and tutors make good sense in online communications. Students were very satisfied using institute MOLE classroom. There is significant consistency between preferred and actual learning experience of the students
Contrasting the semantics of Indonesian -kan & -i verb pairs: A usage-based, constructional approach
Creators: name: Rajeg, Gede Primahadi Wijaya
name: Rajeg, I Made
name: Arka, I Wayan
Publisher: name: figshare
Year: 2020
Subjects: subject: 200313 Indonesian Languages
subject: FOS: Languages and literature
subject: 200399 Language Studies not elsewhere classified
subject: 200408 Linguistic Structures (incl. Grammar, Phonology, Lexicon, Semantics)
subject: 200499 Linguistics not elsewhere classified
subject: 200402 Computational Linguistics

description: How to cite this paper proceedings (using DataCite citation style):Rajeg, Gede Primahadi Wijaya; Rajeg, I Made; Arka, I Wayan (2020): Contrasting the semantics of Indonesian -kan & -i verb pairs: A usage-based, constructional approach. figshare. Conference contribution. https://doi.org/10.6084/m9.figshare.12311192A paper proceedings for a talk presented at the Seminar Nasional Bahasa Ibu on 6-7 February 2020 at the Faculty of Arts, Udayana University, Indonesia. See here for details.
Slides available as:Rajeg, Gede Primahadi Wijaya; Rajeg, I Made; Arka, I Wayan (2020): Contrasting the semantics of Indonesian -kan & -i verb pairs: A usage-based, constructional approach. figshare. Presentation. https://doi.org/10.6084/m9.figshare.11758218.v1Data and R Markdown Notebook:Rajeg, Gede Primahadi Wijaya; Rajeg, I Made; Arka, I Wayan (2020): R Markdown Notebook and data for "Contrasting the semantics of Indonesian -kan and -i verb pairs: A usage-based, constructional approach". figshare. Dataset. https://doi.org/10.6084/m9.figshare.11823366.v1
b \to ss\bar{d}$ in a Vector Quark Model
Creators: name: Cai, Hai-Ying
name: Zhang, Da-Xin
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The rare decay $b\to ss\bar{d}$ is studied in a vector quark model by adding the contributions from exotic vector-like quarks. We find that the contribution from box diagrams amounts to $10^{-9}$ in the branching ratio, while the $Z$-mediated tree level contribution is negligible.
description: LaTeX, 9 pages with 1 figure
title: Rendezvous-multiple broadcast networks
Creators: name: Hafner, Johannes
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Parameterized Model Checking
subject: Timed Networks

description: Automatic software verification is concerned with automatically deciding whether a given model of a computer system satisfies a given specification. The Parameterized model checking problem (PMCP) of networks is the special case of deciding whether a given network (usually of identical processes) satisfies its specification regardless of the number of processes in it. We explore the case where the processes are indeed all identical, and communicate via rendezvous and symmetric broadcast. We map the boundary of decidability of the PMCP in such networks. In particular, we show that the PMCP is decidable for finite runs of such networks, whereas for infinite runs the situation is more involved: the PMCP is undecidable already for networks with only two types of broadcast messages (the case of a single symmetric broadcast is already known to be decidable), but becomes decidable if one introduces certain grouping structures limiting the scope of broadcast messages.
Effects of Quantum-Well Inversion Asymmetry on Electron-Nuclear Spin Coupling in the Fractional Quantum Hall Regime
Creators: name: Hashimoto, Katsushi
name: Muraki, Koji
name: Kumada, Norio
name: Saku, Tadashi
name: Hirayama, Yoshiro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We examine effects of inversion asymmetry of a GaAs/Al0.3Ga0.7As quantum well (QW) on electron-nuclear spin coupling in the fractional quantum Hall (QH) regime. Increasing the QW potential asymmetry at a fixed Landau-level filling factor (nu) with gate voltages suppresses the current-induced nuclear spin polarization in the nu = 2/3 Ising QH ferromagnet, while it significantly enhances the nuclear spin relaxation at general nu. These findings suggest that mixing of different spin states due to the Rashba spin-orbit interaction strongly affects the electron-nuclear spin coupling.
description: 15 pages, 4 figures
Additional file 1 of The association between serum uric acid / serum creatinine ratio and in-hospital outcomes in elderly patients with acute myocardial infarction
Creators: name: Jiang, Lujing
name: Jin, JunGuo
name: He, Xuyu
name: Hu, Xiangming
name: Guo, Lan
name: Chen, Guo
name: Zhou, Yingling
Publisher: name: figshare
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Hematology
subject: Computational Biology

description: Supplementary Material 1
Doping evolution of chemical potential, spin-correlation gap, and charge dynamics in Nd$_{2-x}$Ce$_x$CuO$_4$
Creators: name: Wang, N. L.
name: Li, G.
name: Wu, Dong
name: Chen, X. H.
name: Wang, C. H.
name: Ding, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report optical reflectivity study on Nd$_{2-x}$Ce$_x$CuO$_4$ over a broad doping range 0$\leq x\leq$0.20. The study reveals a systematic shift of chemical potential with doping. A pronounced peak structure specific to the electron-doped cuprate is observed in optical scattering rate based on the extended Drude model analysis. The energy scale of the peak could be very different from that of the peak in conductivity spectrum. We clarify that the "hot spots" gap probed in photoemission experiments correlates directly with the sharp suppression feature in scattering rate rather than conductivity spectra. The gap is associated with the short-range antiferromagnetic correlation, and disappears in a manner of fading away with increasing doping and temperature. In the heavily overdoped region, a dominant $ω^2$-dependence of the scattering rate is identified up to very high energy.
description: 6 pages, 5 figures
Energy of gravitational radiation in the de Sitter universe at the scri and at a horizon
Creators: name: Kolanowski, Maciej
name: Lewandowski, Jerzy
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we investigate outcomes of a symplectic formula for the gravitational waves charges in the general relativity linearized around the de Sitter spacetime. We derive their explicit form at {\it scri} in the Bondi frame, compare with the connected Noether expression and analyze their gauge dependence which allows us to fix unambiguously boundary terms. We also discuss minimal requirements needed to impose on initial data to have finite values of charges. Furthermore, we analyze transformation laws of the energy upon the action of the de Sitter group and discuss its physical interpretation. Finally, we calculate its flux through a cosmological horizon instead of {\it scri}. We show that in the limit $Λ\to 0$, one recovers Trautman--Bondi formula strengthening recent proposal that one should choose a~null surface as a more natural boundary for the astrophysical systems in the presence of the cosmological constant.
description: 30 pages
S1 Supplementary Material from Chimpanzee lip-smacks confirm primate continuity for speech-rhythm evolution
Creators: name: Pereira, André S.
name: Kavanagh, Eithne
name: Hobaiter, Catherine
name: Slocombe, Katie E.
name: Lameira, Adriano R.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Speech is a human hallmark, but its evolutionary origins continue to defy scientific explanation. Recently, the open–close mouth rhythm of 2–7 Hz (cycles/second) characteristic of all spoken languages has been identified in the orofacial signals of several nonhuman primate genera, including orangutans, but evidence from any of the African apes remained missing. Evolutionary continuity for the emergence of speech is, thus, still inconclusive. To address this empirical gap, we investigated the rhythm of chimpanzee lip-smacks across four populations (two captive and two wild). We found that lip-smacks exhibit a speech-like rhythm at approximately 4 Hz, closing a gap in the evidence for the evolution of speech-rhythm within primate order. We observed sizeable rhythmic variation within and between chimpanzee populations, with differences of over 2 Hz at each level. This variation did not result, however, in systematic group differences within our sample. To further explore the phylogenetic and evolutionary perspective on this variability, inter-individual and inter-population analyses will be necessary across primate species producing mouth signals at speech-like rhythm. Our findings support the hypothesis that speech recruited ancient primate rhythmic signals and suggest that multi-site studies may still reveal new windows of understanding about these signals' use and production along the evolutionary timeline of speech.
Additional file 1 of Physical activity, screen time and dietary behaviours in New Zealand adolescents prior to and following the onset of the COVID-19 pandemic
Creators: name: Mandic, Sandra
name: Khan, Asaduzzaman
name: García Bengoechea, Enrique
name: Coppell, Kirsten J.
name: Spence, John C.
name: Smith, Melody
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 1.
Turbulence and galactic structure
Creators: name: Elmegreen, Bruce G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Interstellar turbulence is driven over a wide range of scales by processes including spiral arm instabilities and supernovae, and it affects the rate and morphology of star formation, energy dissipation, and angular momentum transfer in galaxy disks. Star formation is initiated on large scales by gravitational instabilities which control the overall rate through the long dynamical time corresponding to the average ISM density. Stars form at much higher densities than average, however, and at much faster rates locally, so the slow average rate arises because the fraction of the gas mass that forms stars at any one time is low, ~10^{-4}. This low fraction is determined by turbulence compression, and is apparently independent of specific cloud formation processes which all operate at lower densities. Turbulence compression also accounts for the formation of most stars in clusters, along with the cluster mass spectrum, and it gives a hierarchical distribution to the positions of these clusters and to star-forming regions in general. Turbulent motions appear to be very fast in irregular galaxies at high redshift, possibly having speeds equal to several tenths of the rotation speed in view of the morphology of chain galaxies and their face-on counterparts. The origin of this turbulence is not evident, but some of it could come from accretion onto the disk. Such high turbulence could help drive an early epoch of gas inflow through viscous torques in galaxies where spiral arms and bars are weak. Such evolution may lead to bulge or bar formation, or to bar re-formation if a previous bar dissolved. We show evidence that the bar fraction is about constant with redshift out to z~1, and model the formation and destruction rates of bars required to achieve this constancy.
description: in: Penetrating Bars through Masks of Cosmic Dust: The Hubble Tuning Fork strikes a New Note, Eds., K. Freeman, D. Block, I. Puerari, R. Groess, Dordrecht: Kluwer, in press (presented at a conference in South Africa, June 7-12, 2004). 19 pgs, 5 figures
Impact of cardiac and respiratory motion on the 3D accuracy of image-guided interventions on monoplane systems
Creators: name: Bertsche, Dagmar
name: Metze, Patrick
name: Schneider, Leonhard-Moritz
name: Vernikouskaya, Ina
name: Rasche, Volker
Publisher: name: Universität Ulm
Year: 2023
Subjects: Image-guided intervention
3D accuracy
Motion-induced accuracy-effects
Monoplane system

description: Abstract Purpose Image-guided intervention (IGI) systems have the potential to increase the efficiency in interventional cardiology but face limitations from motion. Even though motion compensation approaches have been proposed, the resulting accuracy has rarely been quantified using in vivo data. The purpose of this study is to investigate the potential benefit of motion-compensation in IGS systems. Methods Patients scheduled for left atrial appendage closure (LAAc) underwent pre- and postprocedural non-contrast-enhanced cardiac magnetic resonance imaging (CMR). According to the clinical standard, the final position of the occluder device was routinely documented using x-ray fluoroscopy (XR). The accuracy of the IGI system was assessed retrospectively based on the distance of the 3D device marker location derived from the periprocedural XR data and the respective location as identified in the postprocedural CMR data. Results The assessment of the motion-compensation depending accuracy was possible based on the patient data. With motion synchronization, the measured accuracy of the IGI system resulted similar to the estimated accuracy, with almost negligible distances of the device marker positions identified in CMR and XR. Neglection of the cardiac and/or respiratory phase significantly increased the mean distances, with respiratory motion mainly reducing the accuracy with rather low impact on the precision, whereas cardiac motion decreased the accuracy and the precision of the image guidance. Conclusions In the presented work, the accuracy of the IGI system could be assessed based on in vivo data. Motion consideration clearly showed the potential to increase the accuracy in IGI systems. Where the general decrease in accuracy in non-motion-synchronized data did not come unexpected, a clear difference between cardiac and respiratory motion-induced errors was observed for LAAc data. Since sedation and intervention location close to the large vessels likely impacts the respiratory motion contribution, an intervention-specific accuracy analysis may be useful for other interventions.
Equilibrium Positions, Shape Invariance and Askey-Wilson Polynomials
Creators: name: Odake, S.
name: Sasaki, R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We show that the equilibrium positions of the Ruijsenaars-Schneider-van Diejen systems with the trigonometric potential are given by the zeros of the Askey-Wilson polynomials with five parameters. The corresponding single particle quantum version, which is a typical example of "discrete" quantum mechanical systems with a q-shift type kinetic term, is shape invariant and the eigenfunctions are the Askey-Wilson polynomials. This is an extension of our previous study [1,2], which established the "discrete analogue" of the well-known fact; The equilibrium positions of the Calogero systems are described by the Hermite and Laguerre polynomials, whereas the corresponding single particle quantum versions are shape invariant and the eigenfunctions are the Hermite and Laguerre polynomials.
description: 14 pages, 1 figure. The outline of derivation of the result in section 2 is added
The complex of words and Nakaoka stability
Creators: name: Kerz, Moritz C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: K-Theory and Homology (math.KT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We give a new simple proof of the exactness of the complex of injective words and use it to prove Nakaoka's homology stability for symmetric groups. The methods are generalized to show acyclicity in low degrees for the complex of words in general position.
description: 8 pages, improved notation
A combined experimental and numerical study of stab-penetration forces
Creators: name: Annaidh, Aisling Ni
name: Cassidy, Marie
name: Curtis, Michael
name: Destrade, Michel
name: Gilchrist, Michael D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The magnitude of force used in a stabbing incident can be difficult to quantify, although the estimate given by forensic pathologists is often seen as `critical' evidence in medico-legal situations. The main objective of this study is to develop a quantitative measure of the force associated with a knife stabbing biological tissue, using a combined experimental and numerical technique. A series of stab-penetration tests were performed to quantify the force required for a blade to penetrate skin at various speeds and using different `sharp' instruments. A computational model of blade penetration was developed using ABAQUS/EXPLICIT, a non-linear finite element analysis (FEA) commercial package. This model, which incorporated element deletion along with a suitable failure criterion, is capable of systematically quantifying the effect of the many variables affecting a stab event. This quantitative data could, in time, lead to the development of a predictive model that could help indicate the level of force used in a particular stabbing incident.
Some properties of frustrated spin systems: extensions and applications of Lieb-Schupp approach
Creators: name: Wojtkiewicz, Jacek
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Lieb and Schupp have obtained, using certain version of ``spin-reflection positivity'' method, a number of ground-state properties for frustrated Heisenberg models. One group of these results is related to singlet nature of ground state and it needs an assumption of reflection symmetry present in the system. In this paper, it is shown that the result holds also for other symmetries (inversion etc.). The second Lieb-Schupp result is relation between ground-state energies of certain systems. In the paper, this relation is applied to multidimensional models on various lattices.
description: 15 pages, 8 eps figures, revtex 4
Restoring the night sky darkness at Observatorio del Teide: First application of the model Illumina version 2
Creators: name: Aubé, Martin
name: Simoneau, Alexandre
name: Munoz-Tunon, Casiana
name: Diaz-Castro, Javier
name: Serra-Ricart, Miquel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The propagation of artificial light into real environments is complex. To perform its numerical modelling with accuracy one must consider hyperspectral properties of the lighting devices and their geographic positions, the hyperspectral properties of the ground reflectance, the size and distribution of small-scale obstacles, the blocking effect of topography, the lamps angular photometry and the atmospheric transfer function (aerosols and molecules). A detailed radiative transfer model can be used to evaluate how a particular change in the lighting infrastructure may affect the sky radiance. In this paper, we use the new version (v2) of the Illumina model to evaluate a night sky restoration plan for the Teide Observatory located on the island of Tenerife, Spain. In the past decades, the sky darkness was severely degraded by growing light pollution on the Tenerife Island. In this work, we use the contribution maps giving the effect of each pixel of the territory to the artificial sky radiance. We exploit the hyperspectral capabilities of Illumina v2 and show how the contribution maps can be integrated over regions or municipalities according to the Johnson-Cousins photometric bands spectral sensitivities. The sky brightness reductions per municipality after a complete shutdown and a conversion to Light-Emitting Diodes are calculated in the Johnson-Cousins B, V, R bands. We found that the conversion of the lighting infrastructure of Tenerife with LED (1800K and 2700K), according to the conversion strategy in force, would result in a zenith V band sky brightness reduction of about 0.3 mag arcsec-2.
description: Submitted paper
Effective Theory Approach to the Skyrme model and Application to Pentaquarks
Creators: name: Harada, Koji
name: Mitsunari, Yohei
name: Yamashita, Nao-aki
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Skyrme model is reconsidered from an effective theory point of view. From the most general chiral Lagrangian up to including terms of order $p^4$, $N_c$ and $δm^2$ ($δm\equiv m_s-m$), new interactions, which have never been considered before, appear upon collective coordinate quantization. We obtain the parameter set best fitted to the observed low-lying baryon masses, by performing the second order perturbative calculations with respect to $δm$. We calculate the masses and the decay widths of the other members of (mainly) anti-decuplet pentaquark states. The formula for the decay widths is reconsidered and its baryon mass dependence is clarified.
description: 65 pages, 1 figure. Revised version:the complete second order perturbative calculations performed and two appendices added
Weyl Josephson Circuits
Creators: name: Fatemi, Valla
name: Akhmerov, Anton R.
name: Bretheau, Landry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce Weyl Josephson circuits: small Josephson junction circuits that simulate Weyl band structures. We first formulate a general approach to design circuits that are analogous to Bloch Hamiltonians of a desired dimensionality and symmetry class. We then construct and analyze a six-junction device that produces a 3D Weyl Hamiltonian with broken inversion symmetry and in which topological phase transitions can be triggered \emph{in situ}. We argue that currently available superconducting circuit technology allows experiments that probe topological properties inaccessible in condensed matter systems.
description: 13 pages, 8 figures
Non-linear soliton confinement in weakly coupled antiferromagnetic spin chains
Creators: name: Lane, H.
name: Stock, C.
name: Cheong, S. -W.
name: Demmel, F.
name: Ewings, R. A.
name: Krüger, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the low-energy dynamics of quasi one dimensional, large-$S$ quantum antiferromagnets with easy-axis anisotropy, using a semi-classical non-linear sigma model. The saddle point approximation leads to a sine Gordon equation which supports soliton solutions. These correspond to the movement of spatially extended domain walls. Long-range magnetic order is a consequence of a weak inter-chain coupling. Below the ordering temperature, the coupling to nearby chains leads to an energy cost associated with the separation of two domain walls. From the kink-antikink two-soliton solution, we compute the effective confinement potential. At distances large compared to the size of the solitons the potential is linear, as expected for point-like domain walls. At small distances the gradual annihilation of the solitons weakens the effective attraction and renders the potential quadratic. From numerically solving the effective one dimensional Schröedinger equation with this non-linear confinement potential we compute the soliton bound state spectrum. We apply the theory to CaFe$_{2}$O$_{4}$, an anisotropic $S=5/2$ magnet based upon antiferromagnetic zig-zag chains. Using inelastic neutron scattering, we are able to resolve seven discrete energy levels for spectra recorded slightly below the Néel temperature $T_\textrm{N}\approx 200$~K. These modes are well described by our non-linear confinement model in the regime of large spatially extended solitons.
description: 11 pages, 7 figures
Microscopic description of the self-conjugate $^{108}$Xe and $^{104}$Te $α$-decay chain
Creators: name: Mercier, F.
name: Zhao, J.
name: Lasseri, R. -D
name: Ebran, J. -P.
name: Khan, E.
name: Niksic, T.
name: Vretenar, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A microscopic calculation of half-lives for the recently observed $^{108}$Xe $\to$ $^{104}$Te $\to$ $^{100}$Sn $α$-decay chain is performed using a self-consistent framework based on energy density functionals. The relativistic density functional DD-PC1 and a separable pairing interaction of finite range are used to compute axially-symmetric deformation energy surfaces of $^{104}$Te and $^{108}$Xe as functions of quadrupole, octupole and hexadecupole collective coordinates. Dynamic least-action paths are determined that trace the $α$-particle emission from the equilibrium deformation to the point of scission. The calculated half-lives: 197 ns for $^{104}$Te and 50 $μ$s for $^{108}$Xe, are compared to recent experimental values of the half-lives of superallowed $α$-decay of $^{104}$Te: $< 18$ ns, and $^{108}$Xe: 58$^{+106}_{-23}$ $μ$s.
description: 4 pages, 4 figures
S2 Supplementary Material from Chimpanzee lip-smacks confirm primate continuity for speech-rhythm evolution
Creators: name: Pereira, André S.
name: Kavanagh, Eithne
name: Hobaiter, Catherine
name: Slocombe, Katie E.
name: Lameira, Adriano R.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Speech is a human hallmark, but its evolutionary origins continue to defy scientific explanation. Recently, the open–close mouth rhythm of 2–7 Hz (cycles/second) characteristic of all spoken languages has been identified in the orofacial signals of several nonhuman primate genera, including orangutans, but evidence from any of the African apes remained missing. Evolutionary continuity for the emergence of speech is, thus, still inconclusive. To address this empirical gap, we investigated the rhythm of chimpanzee lip-smacks across four populations (two captive and two wild). We found that lip-smacks exhibit a speech-like rhythm at approximately 4 Hz, closing a gap in the evidence for the evolution of speech-rhythm within primate order. We observed sizeable rhythmic variation within and between chimpanzee populations, with differences of over 2 Hz at each level. This variation did not result, however, in systematic group differences within our sample. To further explore the phylogenetic and evolutionary perspective on this variability, inter-individual and inter-population analyses will be necessary across primate species producing mouth signals at speech-like rhythm. Our findings support the hypothesis that speech recruited ancient primate rhythmic signals and suggest that multi-site studies may still reveal new windows of understanding about these signals' use and production along the evolutionary timeline of speech.
Complete Supplementary Documents from A mitochondrial genetic divergence proxy predicts the reproductive compatibility of mammalian hybrids
Creators: name: Allen, Richard
name: Ryan, Hannah
name: Davis, Brian W.
name: King, Charlotte
name: Frantz, Laurent
name: Irving-Pease, Evan
name: Barnett, Ross
name: Linderholm, Anna
name: Loog, Liisa
name: Haile, James
name: Lebrasseur, Ophélie
name: White, Mark
name: Kitchener, Andrew C.
name: Murphy, William J.
name: Larson, Greger
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60301 Animal Systematics and Taxonomy
subject: 60310 Plant Systematics and Taxonomy

description: Numerous pairs of evolutionarily divergent mammalian species have been shown to produce hybrid offspring. In some cases, F1 hybrids are able to produce F2 s through matings with F1 s. In other instances, the hybrids are only able to produce offspring themselves through backcrosses with a parent species due to unisexual sterility (Haldane's Rule). Here, we explicitly tested whether genetic distance, computed from mitochondrial and nuclear genes, can be used as a proxy to predict the relative fertility of the hybrid offspring resulting from matings between species of terrestrial mammals. We assessed the proxy's predictive power using a well-characterized felid hybrid system, and applied it to modern and ancient hominins. Our results revealed a small overlap in mitochondrial genetic distance values that distinguish species pairs whose calculated distances fall within two categories: those whose hybrid offspring follow Haldane's Rule, and those whose hybrid offspring can produce F2 s. The strong correlation between genetic distance and hybrid fertility demonstrated here suggests that this proxy can be employed to predict whether the hybrid offspring of two mammalian species will follow Haldane's Rule.
NE- 165 Case Study : LEANER PORK: Can New Sector Linkages Be Formed?
Creators: name: Coaldrake, Karen
name: Sonka, Steven T.
name: Coaldrake, Karen
name: Sonka, Steven T.
Publisher: name: Unknown
Year: 1991
Subjects: Agribusiness
Livestock Production/Industries

description: A more demanding and evolving consumer is creating change in the market for pork and many working within the industry are predicting opportunities for leaner products. However, leaner pork enthusiasts also are frustrated by the established industry food chain that offers little incentive for modification. Modification would require change on the part of genetic suppliers, commercial producers, packers and processors, and retailers. However, many of these food chain participants traditionally have not collaborated with others in the sector. Yet the establishment of these new linkages may be key to the success of a leaner pork industry. This case study documents several of the activities currently occurring within the leaner pork industry and explores new linkages which may be critical in the future. Currently, genetic suppliers are struggling with short-term needs of producers, while attempting to look at the long-term demands of consumers. Hog producers have been profitable and lack incentives to alter practices which would produce leaner animals. Packers are interested in efficiently running large scale operations with large quantities of low cost meat. Retailers struggle with labeling inconsistencies and a low cost mentality that make it difficult to market leaner pork in the meatcase. Leaner pork enthusiasts are making strides to overcome the disadvantages found in the traditional system. Some genetic suppliers are now working with packers to determine animal quality beyond the producer's feedlot. Some packers are creating incentive programs that pay producers for leaner quality. These lean incentive programs may become more attractive for packers and producers if new technologies measuring lean become less prohibitive for larger operations. Many packers are moving into branded products, resulting in incentive programs for producers who supply animals with the desired quality. Overall, these efforts have remained a small portion of total pork industry activities.
Quantifying polaronic effects on charge-carrier scattering and mobility in lead--halide perovskites
Creators: name: Wolf, Matthew J.
name: Irvine, Lewis A. D.
name: Walker, Alison B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The formation of polarons due to the interaction between charge carriers and the crystal lattice has been proposed to have wide-ranging effects on charge carrier dynamics in lead--halide perovskites (LHPs). The hypothesis underlying many of those proposals is that charge carriers are "protected" from scattering by their incorporation into polarons. We test that hypothesis by deriving expressions for the rates of scattering of polarons by polar-optical and acoustic phonons, and ionised impurities, which we compute for electrons in the LHPs MAPbI$_{3}$ , MAPbBr$_{3}$ and CsPbI$_{3}$. We then use the ensemble Monte Carlo method to compute electron-polaron distribution functions which satisfy a Boltzmann equation incorporating the same three scattering mechanisms. By carrying out analogous calculations for band electrons and comparing their results to those for polarons, we conclude that polaron formation impacts charge-carrier scattering rates and mobilities to a limited degree in LHPs, contrary to claims in the recent literature.
description: 16 pages, 4 figures
Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr
Creators: name: Kovács-Krausz, Zoltán
name: Hoque, Anamul Md
name: Makk, Péter
name: Szentpéteri, Bálint
name: Kocsis, Mátyás
name: Fülöp, Bálint
name: Yakushev, Michael Vasilievich
name: Kuznetsova, Tatyana Vladimirovna
name: Tereshchenko, Oleg Evgenevich
name: Kokh, Konstantin Aleksandrovich
name: Lukács, István Endre
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Dash, Saroj Prasad
name: Csonka, Szabolcs
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Ferromagnetic materials are the widely used source of spin-polarized electrons in spintronic devices, which are controlled by external magnetic fields or spin-transfer torque methods. However, with increasing demand for smaller and faster spintronic components, utilization of spin-orbit phenomena provides promising alternatives. New materials with unique spin textures are highly desirable since all-electric creation and control of spin polarization is expected, where the strength, as well as an arbitrary orientation of the polarization, can be defined without the use of a magnetic field. In this work, we use a novel spin-orbit crystal BiTeBr for this purpose. Owning to its giant Rashba spin splitting, bulk spin polarization is created at room temperature by an electric current. Integrating BiTeBr crystal into graphene-based spin valve devices, we demonstrate for the first time that it acts as a current-controlled spin injector, opening new avenues for future spintronic applications in integrated circuits.
description: Main Text: 10 pages, 5 figures; Supporting Information: 12 pages, 6 figures
Graphing Website Relationships for Risk Prediction: Identifying Derived Threats to Users Based on Known Indicators
Creators: name: Kulp, Philip H.
name: Robinson, Nikki E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Databases (cs.DB)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.4; H.2.4; E.2; C.2.1

description: The hypothesis for the study was that the relationship based on referrer links and the number of hops to a malicious site could indicate the risk to another website. We chose Receiver Operating Characteristics (ROC) analysis as the method of comparing true positive and false positive rates for captured web traffic to test the predictive capabilities of our model. Known threat indicators were used as designators, and the Neo4j graph database was leveraged to map the relationships between other websites based on referring links. Using the referring traffic, we mapped user visits across websites with a known relationship to track the rate at which users progressed from a non-malicious website to a known threat. The results were grouped by the hop distance from the known threat to calculate the predictive rate. The results of the model produced true positive rates between 58.59% and 63.45% and false positive rates between 7.42% to 37.50%, respectively. The true and false positive rates suggest an improved performance based on the closer proximity from the known threat, while an increased referring distance from the threat resulted in higher rates of false positives.
description: 10 pages, 3 figures, 3 tables
Non-sequential double ionization of molecules in a strong laser field
Creators: name: Prauzner-Bechcicki, Jakub S.
name: Sacha, Krzysztof
name: Eckhardt, Bruno
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We consider the final stage of double ionization of $\rm O_2$ molecules by short linearly polarized laser pulses. The saddles of the effective adiabatic potential energy close to which simultaneous escape of electrons from a molecule takes place are identified. The analysis of the saddles and numerical simulations of the ionization indicate that to observe clear signatures of simultaneous electron escape in double ionization of $\rm O_2$ molecules stronger and much shorter laser pulses than those used in the recent experiment [E. Eremina, {\it et al}, Phys. Rev. Lett. {\bf 92}, 173001 (2004)] should be applied.
description: 5 pages, 3 figures, Conference proceedings from 13th International Laser Physics Workshop, Triest, Italy, July 12-16, 2004
Academic Performance Influenced to Select Variables
Creators: name: Maghamil, Dayanara Lee
name: Magtortor, Almira Nona
name: Lucero, Lowell
Publisher: name: figshare
Year: 2020
Subjects: subject: 139999 Education not elsewhere classified
subject: FOS: Educational sciences

description: This study aimed to determine how the attitude of the pupils towards school affects their academic performance. Specifically, it described the respondents in terms of their profile: gender, parental educational attainment and family economic status; and the attitude towards school factors: class activities. In addition, the respondents’ grades were collected to determine their class standing and to find out its relationship with the pupils’ profile. The respondents were the Grade Six pupils of Special Science Elementary School in Tambo Central School located at Tambo, Hinaplanon, Iligan City, Lanao del Norte. The descriptive and correlation research methodologies were used. A survey form attached with a checklist and the pupils’ grades were employed and gathered. The respondents which were the Grade Six pupils were mostly female. Most of the respondents’ parents attained college level. The majority of the families have incomes reached P20,000 and beyond. Most respondents got high grades that fell under the proficient level. The findings also revealed that pupils’ academic performance is significantly related to factors such as gender and family income.
Additional file 1 of Knowledge and attitudes on oral health of women during pregnancy and their children: an online survey
Creators: name: Cagetti, Maria Grazia
name: Salerno, Claudia
name: Ionescu, Andrei Cristian
name: La Rocca, Serena
name: Camoni, Nicole
name: Cirio, Silvia
name: Campus, Guglielmo
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1.
Supplementary material from Perturbation drives changing metapopulation dynamics in a top marine predator
Creators: name: Carroll, Emma L.
name: Hall, Ailsa
name: Olsen, Morten Tange
name: Onoufriou, Aubrie B.
name: Gaggiotti, Oscar E.
name: Russell, Debbie JF
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Includes Supplementary text, Figure S1, Tables S1 to S7 and associated References
Model selection results from Geographical, temporal and individual factors influencing foraging behaviour and consistency in Australasian gannets
Creators: name: Marlenne A. Rodríguez-Malagón
name: Camprasse, Elodie C. M.
name: Angel, Lauren P.
name: Arnould, John P. Y.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Parsimonious models, coefficients and regression parameters of the analysis shown in the manuscript
Tracking energy fluctuations from fragment partitions in the Lattice Gas model
Creators: name: Gulminelli, F.
name: Chomaz, Ph.
name: D'Agostino, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Partial energy fluctuations are known tools to reconstruct microcanonical heat capacities. For experimental applications, approximations have been developed to infer fluctuations at freeze out from the observed fragment partitions. The accuracy of this procedure as well as the underlying independent fragment approximation is under debate already at the level of equilibrated systems. Using a well controlled computer experiment, the Lattice Gas model, we critically discuss the thermodynamic conditions under which fragment partitions can be used to reconstruct the thermodynamics of an equilibrated system.
description: version accepted for publication in Phys.Rev.C