cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Resonance Mass Spectra of Gravity and Fermion on Bloch Branes
Creators: name: Xie, Qun-Ying
name: Yang, Jie
name: Zhao, Li
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, by presenting the potentials of Kaluza-Klein (KK) modes in the corresponding Schrödinger equations, we investigate the localization and resonances of gravity and fermion on the symmetric and asymmetric Bloch {branes}. We find that the localization properties of zero modes for gravity and fermion in the symmetric brane case are the same, whereas, for the asymmetric brane case, the fermion zero mode is localized on one of the sub-branes, while the gravity zero mode is localized on another sub-brane. The spectra of the gravity and the left- or right-handed fermion are composed of a bound zero mode and a series of gapless continuous massive KK modes. Among the continuous massive KK modes, we obtain some discrete gravity and fermion resonant (quasilocalized) KK states on the brane, which have a finite probability of escaping into the bulk. The KK states with lower resonant masses have a longer lifetime on the brane. And the number of the resonant KK states increases linearly with the width of the brane and the scalar-fermion coupling constant, {but it decreases with the asymmetric factor $β$}. The structure of the resonance spectrum is investigated in detail.
description: 19 pages, 15 figures
Velocity Dispersions and Dynamical Masses for a Large Sample of Quiescent Galaxies at z > 1: Improved Measures of the Growth in Mass and Size
Creators: name: Belli, Sirio
name: Newman, Andrew B.
name: Ellis, Richard S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present Keck LRIS spectroscopy for a sample of 103 massive galaxies with redshifts 0.9 < z < 1.6. Of these, 56 are quiescent with high signal-to-noise absorption line spectra, enabling us to determine robust stellar velocity dispersions for the largest sample yet available beyond a redshift of 1. Together with effective radii measured from deep Hubble Space Telescope images, we calculate dynamical masses and address key questions relating to the puzzling size growth of quiescent galaxies over 0 < z < 2. We examine the relationship between stellar and dynamical masses at high redshift, finding that it closely follows that determined locally. We also confirm the utility of the locally-established empirical calibration which enables high-redshift velocity dispersions to be estimated photometrically, and we determine its accuracy to be 35%. To address recent suggestions that progenitor bias - the continued arrival of recently-quenched larger galaxies - can largely explain the size evolution of quiescent galaxies, we examine the growth at fixed velocity dispersion assuming this quantity is largely unaffected by the merger history. We demonstrate that significant size and mass growth have clearly occurred in individual systems. Parameterizing the relation between mass and size growth over 0 < z < 1.6 as R \propto M^alpha, we find alpha = 1.6 +- 0.3, in agreement with theoretical expectations from simulations of minor mergers. Relaxing the assumption that the velocity dispersion is unchanging, we examine growth assuming a constant ranking in galaxy velocity dispersion. This approach is applicable only to the large-dispersion tail of the distribution, but yields a consistent growth rate of alpha = 1.4 +- 0.2. Both methods confirm that progenitor bias alone is insufficient to explain our new observations and that quiescent galaxies have grown in both size and stellar mass over 0 < z < 1.6.
description: Updated to match the published version
How Segmental Dynamics and Mesh Confinement Determine the Selective Diffusivity of Molecules in Crosslinked Dense Polymer Networks
Creators: name: Mei, Baicheng
name: Lin, Tsai-Wei
name: Sheridan, Grant S.
name: Evans, Christopher M.
name: Sing, Charles E.
name: Schweizer, Kenneth S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The diffusion of molecules (penetrants) of variable size, shape, and chemistry through dense crosslinked polymer networks is a fundamental scientific problem that is broadly relevant in materials, polymer, physical and biological chemistry. Relevant applications include molecular separations in membranes, barrier materials for coatings, drug delivery, and nanofiltration. A major open question is the relationship between molecular transport, thermodynamic state, and chemical structure of the penetrant and polymeric media. Here we address this question by combining experiment, simulation, and theory to unravel the competing effects of penetrant chemistry on its transport in rubbery and supercooled polymer permanent networks over a wide range of crosslink densities, size ratios, and temperatures. The crucial importance of the coupling of local penetrant hopping to the polymer structural relaxation process, and the secondary importance of geometric mesh confinement effects, are established. Network crosslinks induce a large slowing down of nm-scale polymer relaxation which greatly retards the rate of penetrant activated relaxation. The demonstrated good agreement between experiment, simulation, and theory provides strong support for the size ratio variable (effective penetrant diameter to the polymer Kuhn length) as a key variable, and the usefulness of coarse-grained simulation and theoretical models that average over Angstrom scale chemical details. The developed microscopic theory provides a fundamental understanding of the physical processes underlying the behaviors observed in experiment and simulation. Penetrant transport is theoretically predicted to become even more size sensitive in a more deeply supercooled regime not probed in our present experiments or simulations, which suggests new strategies for enhancing selective polymer membrane design.
description: including a main text and a supporting information. For the main text, 28 pages and 5 figures; For the supporting information, 23 pages and 14 figures. Totally, 51 pages and 19 figures
Overworked and Undervalued: Examining Teacher Leadership through a Gendered Lens
Creators: name: Wentworth-Nice, Mercedes
Publisher: name: University of Chicago
Year: 2021

description: The Illinois State Board of Education recognizes the expansion of formal teacher leadership roles as a potential solution to low recruitment and high turnover in the teacher workforce. In a traditionally flat profession, teacher leadership roles create differentiated career pathways through which educators can experience professional growth and engage with leadership responsibilities, often while remaining in the classroom. Despite resounding research demonstrating differences in how teachers of different genders experience their careers and glaring gender inequities in the teacher workforce, the implications of teacher leadership for teachers of different genders are not yet understood. My research seeks to fill this gap in the literature, using qualitative interviews with teachers in an Illinois high school district to examine teacher leadership through a gendered lens. I find that unlike administrative leadership, teacher leadership successfully appeals to women teachers. Because teacher leadership is not valued as highly as administrative leadership, however, teacher leadership roles lead to the overwork of women teachers and reinforce the unequal valuation of “womens work” in schools.
Hyosciurus ileile Tate and Archbold 1936
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Hyosciurus
Hyosciurus ileile

description: Hyosciurus ileile Tate and Archbold, 1936. Am. Mus. Novit., 846:1. TYPE LOCALITY: "Ile-ile, North Celebes, 1700 meters" [N Sulawesi, Indonesia]. DISTRIBUTION: Mountains of N Sulawesi. COMMENTS: Formerly considered a subspecies of heinrichi (Tate and Archbold, 1936), but see Musser (1987).
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 430, DOI: 10.5281/zenodo.7353130
description: {"references": ["Tate, G. H. H., and R. Archbold. 1936. Results of the Archbold Expeditions. No. 9. A new race of Hyosciurus. American Museum Novitates, 846: 1."]}
Optimal search reach for heavy neutral leptons at a muon collider
Creators: name: Mękała, Krzysztof
name: Reuter, Jürgen
name: Żarnecki, Aleksander Filip
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Neutrinos are the most elusive particles known. Heavier sterile neutrinos mixing with the standard neutrinos might solve the mystery of the baryon asymmetry of the universe. In this letter, we show that among all future energy frontier accelerators, muon colliders will provide the farthest search reach for such neutrinos for mass ranges above the $Z$ pole into the multi-TeV regime. We compare the performance of muon with electron colliders of the same machine energy and briefly discuss the complementarity in flavor space between the two types of accelerators.
description: 6 pages, 3 figures
Determination of Stochastic Acceleration Model Characteristics in Solar Flares
Creators: name: Chen, Qingrong
name: Petrosian, Vahé
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following our recent paper (Petrosian & Chen 2010), we have developed an inversion method to determine the basic characteristics of the particle acceleration mechanism directly and non-parametrically from observations under the leaky box framework. In the above paper, we demonstrated this method for obtaining the energy dependence of the escape time. Here, by converting the Fokker-Planck equation to its integral form, we derive the energy dependences of the energy diffusion coefficient and direct acceleration rate for stochastic acceleration in terms of the accelerated and escaping particle spectra. Combining the regularized inversion method of Piana et al. 2007 and our procedure, we relate the acceleration characteristics in solar flares directly to the count visibility data from RHESSI. We determine the timescales for electron escape, pitch angle scattering, energy diffusion, and direct acceleration at the loop top acceleration region for two intense solar flares based on the regularized electron flux spectral images. The X3.9 class event shows dramatically different energy dependences for the acceleration and scattering timescales, while the M2.1 class event shows a milder difference. The M2.1 class event could be consistent with the stochastic acceleration model with a very steep turbulence spectrum. A likely explanation of the X3.9 class event could be that the escape of electrons from the acceleration region is not governed by a random walk process, but instead is affected by magnetic mirroring, in which the scattering time is proportional to the escape time and has an energy dependence similar to the energy diffusion time.
description: 11 pages, 5 figures, accepted for publication in ApJ
A direct dynamical measurement of the Milky Way's disk surface density profile, disk scale length, and dark matter profile at 4 kpc < R < 9 kpc
Creators: name: Bovy, Jo
name: Rix, Hans-Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present and apply rigorous dynamical modeling with which we infer unprecedented constraints on the stellar and dark matter mass distribution within our Milky Way (MW), based on large sets of phase-space data on individual stars. Specifically, we model the dynamics of 16,269 G-type dwarfs from SEGUE, which sample 5 < R_GC/kpc < 12 and 0.3 < |Z|/kpc < 3. We independently fit a parameterized MW potential and a three-integral, action-based distribution function (DF) to the phase-space data of 43 separate abundance-selected sub-populations (MAPs), accounting for the complex selection effects affecting the data. We robustly measure the total surface density within 1.1 kpc of the mid-plane to 5% over 4.5 < R_GC/kpc < 9. Using metal-poor MAPs with small radial scale lengths as dynamical tracers probes 4.5 < R_GC/kpc < 7, while MAPs with longer radial scale lengths sample 7 < R_GC/kpc < 9. We measure the mass-weighted Galactic disk scale length to be R_d = 2.15+/-0.14 kpc, in agreement with the photometrically inferred spatial distribution of stellar mass. We thereby measure dynamically the mass of the Galactic stellar disk to unprecedented accuracy: M_* = 4.6+/-0.3+3.0x(R_0/kpc-8)x10^{10}Msun and a total local surface density of Σ_{R_0}(Z=1.1 kpc) = 68+/-4 Msun/pc^2 of which 38+/-4 Msun/pc^2 is contributed by stars and stellar remnants. By combining our surface density measurements with the terminal velocity curve, we find that the MW's disk is maximal in that V_{c,disk} / V_{c,total} = 0.83+/-0.04 at R=2.2 R_d. We also constrain for the first time the radial profile of the dark halo at such small Galactocentric radii, finding that ρ_{DM} (r;near R_0) \propto 1 / r^αwith α< 1.53 at 95% confidence. Our results show that action-based distribution-function modeling of complex stellar data sets is now a feasible approach that will be fruitful for interpreting Gaia data.
description: Table 3 is available electronically as an Ancillary file (added again in v3)
Self-Consistent Hopping Theory of Activated Relaxation and Diffusion of Dilute Penetrants in Dense Crosslinked Polymer Networks
Creators: name: Mei, Baicheng
name: Lin, Tsai-Wei
name: Sing, Charles E.
name: Schweizer, Kenneth S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We generalize and apply a microscopic force-level statistical mechanical theory of the activated dynamics of dilute spherical penetrants in glass-forming liquids to study the influence of permanent crosslinking in polymer networks on the penetrant relaxation time and diffusivity over a wide range of temperature and crosslink density. Calculations are performed for model parameters relevant to recent experimental studies of an nm-sized organic molecule diffusing in crosslinked PnBA networks. The theory predicts the penetrant alpha relaxation time increases exponentially with the crosslink fraction ($f_n$) dependent glass transition temperature, $T_g$, which grows roughly linearly with the square root of $f_n$. Moreover, $T_g$ is also found to be proportional to a geometric confinement parameter defined as the ratio of the penetrant diameter to the mean network mesh size. The decoupling ratio of the penetrant to polymer Kuhn segment alpha relaxation times displays a complex non-monotonic dependence on crosslink density and temperature that can be well collapsed based on the variable $T_g(f_n)/T$. The microscopic mechanism for activated penetrant relaxation is elucidated and a model for the penetrant diffusion constant that combines activated segmental dynamics and entropic mesh confinement is proposed which results in a significantly stronger suppression of mass transport with degree of effective supercooling than predicted for the penetrant alpha time. This behavior corresponds to a new polymer network-based type of decoupling of diffusion and relaxation. In contrast to the diffusion of larger nanoparticles in high temperature rubbery networks, our analysis in the deeply supercooled regime suggests that for the penetrants studied the mesh confinement effects are of secondary importance relative to the consequences of crosslink-induced slowing down of glassy activated relaxation.
description: 42 pages and 14 figures
Sparse model from optimal nonuniform embedding of time series
Creators: name: Nichkawde, Chetan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: An approach to obtaining a parsimonious polynomial model from time series is proposed. An optimal minimal nonuniform time series embedding schema is used to obtain a time delay kernel. This scheme recursively optimizes an objective functional that eliminates maximum number of false nearest neighbors between successive state space reconstruction cycles. A polynomial basis is then constructed from this time delay kernel. A sparse model from this polynomial basis is obtained by solving a regularized least squares problem. The constraint satisfaction problem is made computationally tractable by keeping the ratio between number of constraints to number of variable small by using fewer samples spanning all regions of the reconstructed state space. This helps the structure selection process from an exponentially large combinatorial search space. A forward stagewise algorithm is then used for fast discovery of the optimization path. Results are presented for Mackey-Glass system.
Lariscus Thomas and Wroughton 1909
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Lariscus

description: Lariscus Thomas and Wroughton, 1909. Proc. Zool. Soc. Lond., 1909:389. TYPE SPECIES: Sciurus insignis F. Cuvier, 1821. SYNONYMS: Laria Gray, 1867 (not Scopoli, 1763); Paralariscus Ellerman, 1947. COMMENTS: Tribe Callosciurini (Moore, 1959:173). Includes Paralariscus, treated as a genus by Ellerman (1947:259) and Moore (1959:173).
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 430, DOI: 10.5281/zenodo.7353130
description: {"references": ["Moore, J. C. 1959. Relationships among the living squirrels of the Sciurinae. Bulletin of the American Museum of Natural History, 118 (4): 157 - 206."]}
Faster Algorithms For Vertex Partitioning Problems Parameterized by Clique-width
Creators: name: Oum, Sang-il
name: Sæther, Sigve Hortemo
name: Vatshelle, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Many NP-hard problems, such as Dominating Set, are FPT parameterized by clique-width. For graphs of clique-width $k$ given with a $k$-expression, Dominating Set can be solved in $4^k n^{O(1)}$ time. However, no FPT algorithm is known for computing an optimal $k$-expression. For a graph of clique-width $k$, if we rely on known algorithms to compute a $(2^{3k}-1)$-expression via rank-width and then solving Dominating Set using the $(2^{3k}-1)$-expression, the above algorithm will only give a runtime of $4^{2^{3k}} n^{O(1)}$. There have been results which overcome this exponential jump; the best known algorithm can solve Dominating Set in time $2^{O(k^2)} n^{O(1)}$ by avoiding constructing a $k$-expression [Bui-Xuan, Telle, and Vatshelle. Fast dynamic programming for locally checkable vertex subset and vertex partitioning problems. Theoret. Comput. Sci., 2013. doi:10.1016/j.tcs.2013.01.009]. We improve this to $2^{O(k\log k)}n^{O(1)}$. Indeed, we show that for a graph of clique-width $k$, a large class of domination and partitioning problems (LC-VSP), including Dominating Set, can be solved in $2^{O(k\log{k})} n^{O(1)}$. Our main tool is a variant of rank-width using the rank of a $0$-$1$ matrix over the rational field instead of the binary field.
description: 13 pages, 5 figures
Localization properties in disordered quantum many-body dynamics under continuous measurement
Creators: name: Yamamoto, Kazuki
name: Hamazaki, Ryusuke
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study localization properties of continuously monitored dynamics and associated measurement-induced phase transitions in disordered quantum many-body systems on the basis of the quantum trajectory approach. By calculating the fidelity between random quantum trajectories, we demonstrate that the disorder and the measurement can lead to dynamical properties distinct from each other, although both have a power to suppress the entanglement spreading. In particular, in the large-disorder regime with weak measurement, we elucidate that the fidelity exhibits an anomalous power-law decay before saturating to the steady-state value. Furthermore, we propose a general method to access physical quantities for quantum trajectories in continuously monitored dynamics without resorting to postselection. It is demonstrated that this scheme drastically reduces the cost of experiments. Our results can be tested in ultracold atoms subject to continuous measurement and open the avenue to study dynamical properties of localization, which cannot be understood from the stationary properties of the entanglement entropy.
description: 7+7 pages, 5+9 figures, To appear in Phys. Rev. B (Letter)
title: An Experimental Study of Lateral Soil Pressures and Moments on Flexible Sheet Piles
Creators: name: Donahue, James H.
Publisher: name: Old Dominion University Libraries
Year: 1970

description: In order to study the effect compaction has on lateral earth pressures exerted on and bending moments in steel sheet pile bulkheads, an experimental study was undertaken which employed the placement of a non-cohesive soil at two specific densities against three model piles of varying thicknesses. The soil was placed both in a loose and a dense state and the bending strains and deflections of the sheet piles were measured at various stages of backfill. Surface loadings were then placed after completion of the backfilling to observe the effects these loads had on the bending moments. The results of the experiments indicated that compacting the backfill in layers to achieve a dense soil state can increase sheet pile deflections and cause bending moments to increase nearly eight times those computed theoretically. Soil placed in the loose state caused bending moments more in accord with theory. For the dense soil, increasing the sheet pile flexibility (decreasing the thickness) caused reductions in moments but the reductions were not nearly as substantial as when the sheet piles ·were allowed to relax by releasing the tie rod supports.
The enhanced holographic superconductor: is it possible?
Creators: name: Natsuume, Makoto
name: Okamura, Takashi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is known that time-dependent perturbations can enhance superconductivity and increase the critical temperature. If this phenomenon happens to high-T_c superconductors, one could obtain room-temperature superconductors, but this is still an open issue experimentally. Meanwhile, we would like to understand this phenomenon from gravity dual and see if the enhancement is possible for holographic superconductors. Previous work (arXiv:1104.4098 [hep-th]) has studied this issue by adding a "time-dependent chemical potential," but their analysis is questionable as a true dynamic equilibrium. In particular, the AdS boundary does not supply energy to the bulk spacetime in their setup. A more appropriate way to discuss the enhancement is to add a time-dependent vector potential, i.e., a time-dependent electric field. However, the enhancement does not occur for holographic superconductors.
description: 26 pages, 3 figures, JHEP; v2: added comment in Sec. 4.3 to the published version (v1)
SongDriver: Real-time Music Accompaniment Generation without Logical Latency nor Exposure Bias
Creators: name: Wang, Zihao
name: Liang, Qihao
name: Zhang, Kejun
name: Wang, Yuxing
name: Zhang, Chen
name: Yu, Pengfei
name: Feng, Yongsheng
name: Liu, Wenbo
name: Wang, Yikai
name: Bao, Yuntai
name: Yang, Yiheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Real-time music accompaniment generation has a wide range of applications in the music industry, such as music education and live performances. However, automatic real-time music accompaniment generation is still understudied and often faces a trade-off between logical latency and exposure bias. In this paper, we propose SongDriver, a real-time music accompaniment generation system without logical latency nor exposure bias. Specifically, SongDriver divides one accompaniment generation task into two phases: 1) The arrangement phase, where a Transformer model first arranges chords for input melodies in real-time, and caches the chords for the next phase instead of playing them out. 2) The prediction phase, where a CRF model generates playable multi-track accompaniments for the coming melodies based on previously cached chords. With this two-phase strategy, SongDriver directly generates the accompaniment for the upcoming melody, achieving zero logical latency. Furthermore, when predicting chords for a timestep, SongDriver refers to the cached chords from the first phase rather than its previous predictions, which avoids the exposure bias problem. Since the input length is often constrained under real-time conditions, another potential problem is the loss of long-term sequential information. To make up for this disadvantage, we extract four musical features from a long-term music piece before the current time step as global information. In the experiment, we train SongDriver on some open-source datasets and an original àiSong Dataset built from Chinese-style modern pop music scores. The results show that SongDriver outperforms existing SOTA (state-of-the-art) models on both objective and subjective metrics, meanwhile significantly reducing the physical latency.
description: *Both Zihao Wang and Qihao Liang contribute equally to the paper and share the co-first authorship. This paper has been accepted by ACM Multimedia 2022, oral session, full paper (main track)
Elliptical Tracers in Two-dimensional, Homogeneous, Isotropic Fluid Turbulence: the Statistics of Alignment, Rotation, and Nematic Order
Creators: name: Gupta, Anupam
name: Vincenzi, Dario
name: Pandit, Rahul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the statistical properties of orientation and rotation dynamics of elliptical tracer particles in two-dimensional, homogeneous and isotropic turbulence by direct numerical simulations. We consider both the cases in which the turbulent flow is generated by forcing at large and intermediate length scales. We show that the two cases are qualitatively different. For large-scale forcing, the spatial distribution of particle orientations forms large-scale structures, which are absent for intermediate-scale forcing. The alignment with the local directions of the flow is much weaker in the latter case than in the former. For intermediate-scale forcing, the statistics of rotation rates depends weakly on the Reynolds number and on the aspect ratio of particles. In contrast with what is observed in three-dimensional turbulence, in two dimensions the mean-square rotation rate decreases as the aspect ratio increases.
description: 5 pages, 6 figures
Spanning the full range of neutron star properties within a microscopic description
Creators: name: Malik, Tuhin
name: Ferreira, Márcio
name: Albino, Milena Bastos
name: Providência, Constança
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The high-density behavior of nuclear matter is analyzed within a relativistic mean-field description with non-linear meson interactions. To assess the model parameters and their output, a Bayesian inference technique is used. The Bayesian setup is limited only by a few nuclear saturation properties, the neutron star maximum mass larger than 2 M$_\odot$, and the low-density pure neutron matter equation of state (EOS) produced by an accurate N$^3$LO calculation in chiral effective field theory. Depending on the strength of the non-linear scalar vector field contribution, we have found three distinct classes of EOSs, each one correlated to different star properties distributions. If the non-linear vector field contribution is absent, the gravitational maximum mass and the sound velocity at high densities are the greatest. However, it also gives the smallest speed of sound at densities below three times saturation density. On the other hand, models with the strongest non-linear vector field contribution predict the largest radii and tidal deformabilities for 1.4 M$_\odot$ stars, together with the smallest mass for the onset of the nucleonic direct Urca processes and the smallest central baryonic densities for the maximum mass configuration. These models have the largest speed of sound below three times saturation density, but the smallest at high densities, in particular, above four times saturation density the speed of sound decreases approaching approximately $\sqrt{0.4}c$ at the center of the maximum mass star. On the contrary, a weak non-linear vector contribution gives a monotonically increasing speed of sound. A 2.75 M$_\odot$ NS maximum mass was obtained in the tail of the posterior with a weak non-linear vector field interaction. We found that pQCD favors models with a large non-linear vector field contribution or hyperons.
description: There are 17 pages, 16 figures (The typographical error in the supplemental update)
Lariscus hosei
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Lariscus
Lariscus hosei

description: Lariscus hosei (Thomas, 1892). Ann. Mag. Nat. Hist., ser. 6, 10:215. TYPE LOCALITY: "Batu Sang Mount [Mt. Batu Song], Baram River, N. Borneo (5000 feet)" [Baram Dist., Sarawak, Malaysia]. DISTRIBUTION: Mountains of Sarawak and Sabah (Malaysia). COMMENTS: Sometimes put in the genus Paralariscus; see Ellerman (1947:259); but also see Medway (1977:97).
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 430, DOI: 10.5281/zenodo.7353130
description: {"references": ["Medway, L. 1977. Mammals of Borneo: Field keys and an annotated checklist. Second ed. Monograph, Malay Branch of the Royal Asiatic Society, 7: 1 - 172."]}
Reseäna histórica del Tratado de Cooperación en Materia de Patentes (1966-1995) /
Creators: name: Bogsch, Arpad,
Publisher: name: OMPI,
Year: 0
Subjects: Patent Co-operation Treaty
Patents (International law)
Intellectual property.
Patents.
WIPO DOCUMENTS : PCT
PCT : HISTORY

description: Originally published in English in: The first twenty-five years of the Patent Cooperation Treaty (PCT) 1970-1995.
A renormalization group study of persistent current in a quasiperiodic ring
Creators: name: Dutta, Paramita
name: Maiti, Santanu K.
name: Karmakar, S. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a real-space renormalization group approach for evaluating persistent current in a multi-channel quasiperiodic fibonacci tight-binding ring based on a Green's function formalism. Unlike the traditional methods, the present scheme provides a powerful tool for the theoretical description of persistent current with a very high degree of accuracy in large periodic and quasiperiodic rings, even in the micron scale range, which emphasizes the merit of this work.
description: 4 pages, 3 figures
ntLink: a toolkit for de novo genome assembly scaffolding and mapping using long reads
Creators: name: Coombe, Lauren
name: Warren, René L.
name: Wong, Johnathan
name: Nikolic, Vladimir
name: Birol, Inanc
Publisher: name: arXiv
Year: 2023
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: With the increasing affordability and accessibility of genome sequencing data, de novo genome assembly is an important first step to a wide variety of downstream studies and analyses. Therefore, bioinformatics tools that enable the generation of high-quality genome assemblies in a computationally efficient manner are essential. Recent developments in long-read sequencing technologies have greatly benefited genome assembly work, including scaffolding, by providing long-range evidence that can aid in resolving the challenging repetitive regions of complex genomes. ntLink is a flexible and resource-efficient genome scaffolding tool that utilizes long-read sequencing data to improve upon draft genome assemblies built from any sequencing technologies, including the same long reads. Instead of using read alignments to identify candidate joins, ntLink utilizes minimizer-based mappings to infer how input sequences should be ordered and oriented into scaffolds. Recent improvements to ntLink have added important features such as overlap detection, gap-filling and in-code scaffolding iterations. Here, we present three basic protocols demonstrating how to use each of these new features to yield highly contiguous genome assemblies, while still maintaining ntLink's proven computational efficiency. Further, as we illustrate in the alternate protocols, the lightweight minimizer-based mappings that enable ntLink scaffolding can also be utilized for other downstream applications, such as misassembly detection. With its modularity and multiple modes of execution, ntLink has broad benefit to the genomics community, from genome scaffolding and beyond. ntLink is an open-source project and is freely available from https://github.com/bcgsc/ntLink.
description: 23 pages, 2 figures
On the Minimum Core Mass for Giant Planet Formation at Wide Separations
Creators: name: Piso, Ana-Maria A.
name: Youdin, Andrew N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the core accretion hypothesis, giant planets form by gas accretion onto solid protoplanetary cores. The minimum (or critical) core mass to form a gas giant is typically quoted as 10 Earth masses. The actual value depends on several factors: the location in the protoplanetary disk, atmospheric opacity, and the accretion rate of solids. Motivated by ongoing direct imaging searches for giant planets, this study investigates core mass requirements in the outer disk. To determine the fastest allowed rates of gas accretion, we consider solid cores that no longer accrete planetesimals, as this would heat the gaseous envelope. Our spherical, two-layer atmospheric cooling model includes an inner convective region and an outer radiative zone that matches onto the disk. We determine the minimum core mass for a giant planet to form within a typical disk lifetime of 3 Myr. The minimum core mass declines with disk radius, from ~8.5 Earth masses at 5 AU to ~3.5 Earth masses at 100 AU, with standard interstellar grain opacities. Lower temperatures in the outer disk explain this trend, while variations in disk density are less influential. At all distances, a lower dust opacity or higher mean molecular weight reduces the critical core mass. Our non-self-gravitating, analytic cooling model reveals that self-gravity significantly affects early atmospheric evolution, starting when the atmosphere is only ~10% as massive as the core.
description: 18 pages, 10 figures. Accepted to ApJ
Language Resources for human-centric NLP: the MYTHOTOPIA geo-tagged dataset
Creators: name: Giouli, Voula
name: Vacalopoulou, Anna
name: Giannopoulos, Giorgos
name: Doupas, Athanasios
name: Karioris, Panagiotis
name: Michailidou, Natasa
name: Mourthos, Yiannis
name: Bikakis, Nikos
name: Botini, Paraskevi
name: Sarafopoulou, Domna
name: Sidiropoulos, Nikolaos
name: Stainhaouer, Gregory
name: Tsiafaki, Despoina
name: Flouda, Christina
Publisher: name: Zenodo
Year: 2022
Subjects: digital humanities
geo-tagging
NLP

description: The quest for new explorations in the digital humanities domain brings about the notion of representation and organization of the data at hand that will allow not only for the efficient indexing and retrieval of the content but also for providing meaningful visualizations and new experiences for users. Lately, adding accurate geographical information that is relevant to the content of texts, images or videos has become of paramount importance not only to applications that seek to address the so-called "placing task" but also to tools aimed at visualizing the spatial features of texts. When performed manually, geo-tagging is a costly and time-consuming endeavour. To overcome this obstacle, domain-and language-specific tools for geotagging are required, that is, tools to automatically disambiguate names of localities, identify locations and geotag texts, images, audio, or video. In this regard, there is a need for hand-crafted quality datasets that are applicable for training and evaluating purposes. Our work seeks to address the above issues. We will, therefore, present an infrastructure aimed at providing a multi-faceted experience to visitors of Northern Greece using mythology as a starting point. This infrastructure comprises primarily a multi-lingual and multi-modal dataset (that is a corpus of textual data supplemented with images and videos) that belongs to the humanities domain; the corpus bears various annotations including geo-tagging. The backbone of the infrastructure is a content management system that facilitates advanced indexing, linking, and search functionalities. On top of this infrastructure, a tool creates sightseeing scenarios, i.e., itineraries for users based on their preferences. We will present the corpus itself focusing on the content and the steps taken towards rendering it accessible via the content management system in a way that also facilitates useful visualizations and human-centered applications.
The unification of relativistic jets
Creators: name: Foschini, Luigi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: I report about the unification of relativistic jets from compact objects. The mass range is between 1.4 and 10 billion solar masses (i.e. from neutron stars to supermassive black holes in galaxies).
description: 6 pages, 1 figure. Proceedings HEPROIV (Heidelberg, Germany, 23-26 July 2013). Some typo fixed. To be published on International Journal of Modern Physics Conference Series
Low energy singularities in the ground state of fermionic superfluids
Creators: name: Obert, Benjamin
name: Husemann, Christoph
name: Metzner, Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the effects of order parameter fluctuations on the ground state of fully gapped charge-neutral fermionic superfluids. The Goldstone mode associated with the spontaneously broken symmetry leads to a problem of coupled singularities in $d \leq 3$ dimensions. We derive a minimal set of one-loop renormalization group equations which fully captures the interplay of the singularities. The flow equations are based on a symmetry conserving truncation of a scale dependent effective action. We compute the low energy behavior of longitudinal, transverse and mixed order parameter correlations, and their impact on the fermionic gap. We demonstrate analytically that cancellations protecting the Goldstone mode are respected by the flow, and we present a numerical solution of the flow equations for the two-dimensional attractive Hubbard model.
description: 27 pages, 12 figures
Lariscus insignis
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Lariscus
Lariscus insignis

description: Lariscus insignis (F. Cuvier, 1821). In E. Geoffroy St. Hilaire and F. Cuvier, Hist. Nat. Mammifères, Pt. 2, 4(34):2 pp TYPE LOCALITY: " Sumatra," [Indonesia], Restricted by Sody (1949a:113) to Lampongs, S Sumatra. DISTRIBUTION: Peninsular Malaysia and Thailand, Sumatra, Java, Borneo, adjacent isls. SYNONYMS: atchinensis Sody, 1949; castaneus (Miller, 1900); diversoides Sody, 1949; diversus (Thomas, 1898); fornicatus Robinson, 1917; jalorensis (Bonhote, 1903); javanus (Thomas and Wroughton, 1908); meridionalis Robinson and Kloss, 1911; murianus Sody, 1937; peninsulae Miller, 1903; rostratus (Miller, 1903); saturatus Chasen, 1935; vulcanus Kloss, 1921. COMMENTS: Formerly included niobe and obscurus; see Chasen (1940:145-146); but see also Corbet and Hill (1991: 141); see comments under niobe.
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 430, DOI: 10.5281/zenodo.7353130
description: {"references": ["Sody, H. J. V. 1949 a. Sciuridae from the Indo-Malayan and Indo-Australian regions. Treubia, 20: 57 - 120.", "Thomas, O., and R. C. Wroughton. 1908. The Rudd exploration of S. Africa. -- X. List of mammals collected by Mr. Grant near Tette, Zambesia. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London, 1908: 535 - 552.", "Kloss, C. B. 1921. Some rats and mice of the Malay Archipelago. Treubia, 2: 115 - 124.", "Chasen, F. N. 1940. A handlist of Malaysian mammals: A systematic list of the mammals of the Malay Peninsula, Sumatra, Borneo, and Java, including the adjacent small islands. Bulletin of the Raffles Museum, Singapore, 15: 1 - 209.", "Corbet, G. B., and J. E. Hill. 1991. A world list of mammalian species. Third ed. British Museum (Natural History) Publications, London, 243 pp."]}
Geologia, Grutas e Fauna Subterrânea do Planalto das Cesaredas
Creators: name: Reboleira, Ana
name: Mateus, Octávio
Publisher: name: Revista Captar: Ciência e Ambiente para Todos
Year: 2022

description: O Planalto das Cesaredas é formado por calcários marinhos do Jurássico Inferior a Superior (Toarciano ao Titoniano, ~180 a 144 milhões de anos) e alberga várias cavidades naturais com condições propícias à vida subterrânea. Localizado a baixa altitude na transição entre o maciço de Montejunto e vale Tifónico das Caldas da Rainha, este afloramento cársico inclui-se no distrito bioespeleológico Lusitânico, unidade biogeográfica que inclui os maciços da Arrábida, Estremenho, Sicó-Condeixa-Alvaiázere, Outil-Cantanhede e os afloramentos calcários da Península de Lisboa. O interesse científico sobre a biologia das grutas das Cesaredas teve o seu despertar há sete décadas e investigações recentes revelaram que a sua fauna estritamente subterrânea é composta sobretudo por invertebrados: moluscos, aracnídeos, miriápodes, crustáceos e insectos. A descoberta de espécies endémicas, i.e., cuja única área de distribuição mundial se encontra confinada ao Planalto das Cesaredas, lança grandes desafios em termos de conservação e urge estabelecer medidas de proteção para salvaguardar a sua biodiversidade subterrânea. Este artigo oferece uma perspectiva sobre a geologia, composição faunística e a ecologia das grutas das Cesaredas.
description: Revista Captar: Ciência e Ambiente para Todos, vol. 11 (2022)
Multi-compartment poroelastic models of perfused biological soft tissues: implementation in FEniCSx
Creators: name: Lavigne, Thomas
name: Urcun, Stéphane
name: Rohan, Pierre-Yves
name: Sciumè, Giuseppe
name: Baroli, Davide
name: Bordas, Stéphane P. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Soft biological tissues demonstrate strong time-dependent and strain-rate mechanical behavior, arising from their intrinsic visco-elasticity and fluid-solid interactions (especially at sufficiently large time scales). The time-dependent mechanical properties of soft tissues influence their physiological functions and are linked to several pathological processes. Poro-elastic modeling represents a promising approach because it allows the integration of multiscale/multiphysics data to probe biologically relevant phenomena at a smaller scale and embeds the relevant mechanisms at the larger scale. The implementation of multi-phasic flow poro-elastic models however is a complex undertaking, requiring extensive knowledge. The open-source software FEniCSx Project provides a novel tool for the automated solution of partial differential equations by the finite element method. This paper aims to provide the required tools to model the mixed formulation of poro-elasticity, from the theory to the implementation, within FEniCSx. Several benchmark cases are studied. A column under confined compression conditions is compared to the Terzaghi analytical solution, using the L2-norm. An implementation of poro-hyper-elasticity is proposed. A bi-compartment column is compared to previously published results (Cast3m implementation). For all cases, accurate results are obtained in terms of a normalized Root Mean Square Error (RMSE). Furthermore, the FEniCSx computation is found three times faster than the legacy FEniCS one. The benefits of parallel computation are also highlighted.
description: https://github.com/Th0masLavigne/Dolfinx_Porous_Media.git
A survey on Lyapunov functions for epidemic compartmental models
Creators: name: Cangiotti, Nicolò
name: Capolli, Marco
name: Sensi, Mattia
name: Sottile, Sara
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34D20, 34D23, 37N25, 92D30

description: In this survey, we propose an overview on Lyapunov functions for a variety of compartmental models in epidemiology. We exhibit the most widely employed functions, together with a commentary on their use. Our aim is to provide a comprehensive starting point to readers who are attempting to prove global stability of systems of ODEs. The focus is on mathematical epidemiology, however some of the functions and strategies presented in this paper can be adapted to a wider variety of models, such as prey-predator or rumor spreading.
description: 18 pages, 4 figures