cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Generative Model for Texture Synthesis based on Optimal Transport between Feature Distributions
Creators: name: Houdard, Antoine
name: Leclaire, Arthur
name: Papadakis, Nicolas
name: Rabin, Julien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We propose GOTEX, a general framework for texture synthesis by optimization that constrains the statistical distribution of local features. While our model encompasses several existing texture models, we focus on the case where the comparison between feature distributions relies on optimal transport distances. We show that the semi-dual formulation of optimal transport allows to control the distribution of various possible features, even if these features live in a high-dimensional space. We then study the resulting minimax optimization problem, which corresponds to a Wasserstein generative model, for which the inner concave maximization problem can be solved with standard stochastic gradient methods. The alternate optimization algorithm is shown to be versatile in terms of applications, features and architecture; in particular it allows to produce high-quality synthesized textures with different sets of features. We analyze the results obtained by constraining the distribution of patches or the distribution of responses to a pre-learned VGG neural network. We show that the patch representation can retrieve the desired textural aspect in a more precise manner. We also provide a detailed comparison with state-of-the-art texture synthesis methods. The GOTEX model based on patch features is also adapted to texture inpainting and texture interpolation. Finally, we show how to use our framework to learn a feed-forward neural network that can synthesize on-the-fly new textures of arbitrary size in a very fast manner. Experimental results and comparisons with the mainstream methods from the literature illustrate the relevance of the generative models learned with GOTEX.
Deep HST imaging surveys and the formation of spheroidal galaxies
Creators: name: Rodighiero, G.
name: Franceschini, A.
name: Fasano, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have extended our previous analysis of morphologically selected elliptical and S0 galaxies in the Hubble Deep Field (HDF) North to include HST data in the HDF South and the HDFS-NICMOS areas. Our final sample amounts to 69 E/S0 galaxies with $K<20.15$ over an area of 11 square arcmins. Although a moderately small number over a modest sky area, this sample benefits of the best imaging and photometric data available on high-redshift galaxies. Multi-waveband photometry allows us to estimate with good accuracy the redshifts for the majority of these galaxies which lack a spectroscopic measure. We confirm our previous findings that massive E/S0s tend to disappear from flux-limited samples at $z>1.4$. This adds to the evidence that the rest-frame colours and SEDs of the numerous objects found at $0.8
description: 9 pages, 7 figures -- Version accepted by MNRAS
Oxygen-vacancy centers in Y3Al5O12 garnet crystals: electron paramagnetic resonance and dielectric spectroscopy study
Creators: name: Laguta, V.
name: Buryi, M.
name: Tkachenko, S.
name: Arhipov, P.
name: Gerasymov, I.
name: Sidletskiy, O.
name: Laguta, O.
name: Nikl, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: F+ center, an electron trapped at oxygen vacancy (VO), was investigated in the oxygen deficient Y3Al5O12 (YAG) crystals by EPR. The measurements were performed at temperatures 5-450 K and frequencies 9.4-350 GHz with using both the continue wave and pulse EPR technique. The pulse electron-nuclear double resonance was applied to resolve the hyperfine interaction of the trapped electron with surrounding nuclei. The measurements show that at low temperatures, T < 50 K, EPR spectrum of the F+ center is anisotropic with g factors in the range 1.999-1.988 and originates from three magnetically inequivalent positions of the center in garnet lattice according to different directions of the Al(IV)-VO-Al(VI) chains, where Al(IV) and Al(VI) are the tetrahedral and octahedral Al sites, respectively. As the temperature increases, the EPR spectrum becomes isotropic suggesting a motional averaging of the anisotropy due to motion of electron between neighboring oxygen vacancies. With further increase of the temperature to T > 200 K, we observed delocalization of the electron into the conduction band with the activation energy about 0.4-0.5 eV that resulted in substantial narrowing of the EPR spectral line with simultaneous change of its shape from the Gaussian to Lorentzian due to diminish up to zero of the Fermi contact hyperfine field at 27Al and 89Y nuclei. Such temperature behavior of the F+-center electron in YAG is completely similar to behavior of a donor electron in a semiconductor. Our findings is further supported by measurements of the conductivity and dielectric properties. In particular, these data show that the conduction electrons are not homogeneously distributed in the crystal: there are high-conductive regions separated by poorly-conductive dielectric layers. This leads to the so-called Maxwell-Wagner dielectric relaxation with huge apparent dielectric constant at low frequencies.
Additional file 1 of Racial and ethnic disparities in the association between financial hardship and self-reported weight change during the first year of the pandemic in the U.S.
Creators: name: Mendez, Izabelle
name: Strassle, Paula D
name: Rodriquez, Erik J.
name: Ponce, Stephanie
name: Le, Randy
name: Green, Alexis
name: Martinez, Emma
name: Pérez-Stable, Eliseo J
name: Nápoles, Anna M
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Supplementary Material 1: Supplementary figures and tables
Superconductivity in a magnetically ordered background
Creators: name: Amici, A.
name: Thalmeier, P.
name: Fulde, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Borocarbide compounds with the formula RNi2B2C show interesting superconducting and magnetic properties and the coexistence of the two phenomena. BCS theory is extended to systems with underlying commensurate magnetic order. In the case of helical phases the technique may be extended to any Q-vector and there exists a well defined limit for incommensurate values. The way magnetic order influences superconductivity depends crucially on the details of both the magnetic structure and the electron bands, but some qualitative criteria may be given. As an example we give a brief analysis of the compound HoNi2B2C.
description: 3 pages, 1 figure, proceedings to the conference "Anomalous Complex Superconductors", Crete 1998
Evolution of Lithium in the Milky Way
Creators: name: Romano, Donatella
name: Matteucci, Francesca
name: Ventura, Paolo
name: D'Antona, Francesca
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We adopt up-to-date 7Li yields from asymptotic giant branch stars in order to study the temporal evolution of this element in the solar neighbourhood. Several lithium stellar sources are considered besides the AGBs: Type II supernovae, novae, low-mass giants. Galactic cosmic ray nucleosynthesis is taken into account as well. We conclude that AGB stars do not substantially contribute to 7Li enrichment on a Galactic scale. Therefore, a significant 7Li production from novae and low-mass stars is needed to explain the late, steep rise of the 7Li abundance in disk stars and the meteoritic 7Li abundance.
description: 2 pages, latex, 1 figure. To appear in the Proceedings of the Conference "Cosmic Evolution", Paris, November 2000
Test for mean matrix in GMANOVA model under heteroscedasticity and non-normality for high-dimensional data
Creators: name: Yamada, Takayuki
name: Himeno, Tetsuto
name: Tillander, Annika
name: Pavlenko, Tatjana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 65H15, 62H10

description: This paper is concerned with the testing bilateral linear hypothesis on the mean matrix in the context of the generalized multivariate analysis of variance (GMANOVA) model when the dimensions of the observed vector may exceed the sample size, the design may become unbalanced, the population may not be normal, or the true covariance matrices may be unequal. The suggested testing methodology can treat many problems such as the one- and two-way MANOVA tests, the test for parallelism in profile analysis, etc., as specific ones. We propose a bias-corrected estimator of the Frobenius norm for the mean matrix, which is a key component of the test statistic. The null and non-null distributions are derived under a general high-dimensional asymptotic framework that allows the dimensionality to arbitrarily exceed the sample size of a group, thereby establishing consistency for the testing criterion. The accuracy of the proposed test in a finite sample is investigated through simulations conducted for several high-dimensional scenarios and various underlying population distributions in combination with different within-group covariance structures. Finally, the proposed test is applied to a high-dimensional two-way MANOVA problem for DNA microarray data.
description: Supplementary is available as ancillary files
Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление», Выпуск 32019
Creators: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Publisher: name: Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление»
Year: 2019

description: , Выпуск 32019
Interband absorption and luminescence in small quantum dots under strong magnetic fields
Creators: name: Gonzalez, Augusto
name: Menendez-Proupin, Eduardo
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Interband absorption and luminescence of quasi-two-dimensional, circularly symmetric, N_e electron quantum dots are studied at high magnetic fields, 8
description: Accepted in Physica E
Monolayer Solid Helium-4 Clusters on Graphite
Creators: name: Pierce, M. E.
name: Manousakis, E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In order to resolve the controversy about the low density region of the phase diagram of the 4He monolayer on graphite, we have undertaken a path integral Monte Carlo study of the system. We provide direct evidence that the low density monolayer possesses solid clusters and a low density vapor as opposed to the most recent proposal that the system is in a superfluid phase. We further establish that the rounded heat capacity peaks observed at low densities are caused by melting of such solid clusters and are not associated with the suggested superfluid transition.
description: Revtex, 4 double-column pages, 6 EPS figures; submitted to Phys. Rev. Lett
Supplementary document for Fiber-integrated cantilever-based nanomechanical biosensors as a novel tool for rapid antibiotic susceptibility testing - 6353415.pdf
Creators: name: Zhou, Jie
name: Huang, Jiabin
name: Huang, Haoqiang
name: Zhao, Cong
name: Zou, Mengqiang
name: liu, Dejun
name: weng, xiaoyu
name: Liu, Liwei
name: Qu, Junle
name: Liu, Li
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Document for
Holographic description of boundary gravitons in (3+1) dimensions
Creators: name: Asante, Seth K.
name: Dittrich, Bianca
name: Haggard, Hal M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravity is uniquely situated in between classical topological field theories and standard local field theories. This can be seen in the the quasi-local nature of gravitational observables, but is nowhere more apparent than in gravity's holographic formulation. Holography holds promise for simplifying computations in quantum gravity. While holographic descriptions of three-dimensional spacetimes and of spacetimes with a negative cosmological constant are well-developed, a complete boundary description of zero curvature, four-dimensional spacetime is not currently available. Building on previous work in three-dimensions, we provide a new route to four-dimensional holography and its boundary gravitons. Using Regge calculus linearized around a flat Euclidean background with the topology of a solid hyper-torus, we obtain the effective action for a dual boundary theory which describes the dynamics of the boundary gravitons. Remarkably, in the continuum limit and at large radii this boundary theory is local and closely analogous to the corresponding result in three-dimensions. The boundary effective action has a degenerate kinetic term that leads to singularities in the one-loop partition function that are independent of the discretization. These results establish a rich boundary dynamics for four-dimensional flat holography.
description: 43 pages, 3 figures, 1 table
Boundary value problems and Hardy spaces for elliptic systems with block structure
Creators: name: Auscher, Pascal
name: Egert, Moritz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 35J25, 42B35, 47A60, 42B30, 42B37. Secondary: 35J57, 35J67, 47D06, 35J46, 42B25, 46E35

description: For elliptic systems with block structure in the upper half-space and t-independent coefficients, we settle the study of boundary value problems by proving compatible well-posedness of Dirichlet, regularity and Neumann problems in optimal ranges of exponents. Prior to this work, only the two-dimensional situation was fully understood. In higher dimensions, partial results for existence in smaller ranges of exponents and for a subclass of such systems had been established. The presented uniqueness results are completely new. We also elucidate optimal ranges for problems with fractional regularity data. Methods use and improve, with some new results, all the machinery developed over the last two decades to study such problems: the Kato square root estimates and Riesz transforms, Hardy spaces associated to operators, off-diagonal estimates, non-tangential estimates and square functions and abstract layer potentials to replace fundamental solutions in the absence of local regularity of solutions. This self-contained monograph provides a comprehensive overview on the field and unifies many earlier results that have been obtained by a variety of methods.
description: This is a preprint of the following work: P. Auscher and M. Egert, Boundary value problems and Hardy spaces for elliptic systems with block structure, 2023, Birkh\"auser reproduced with permission of Birkh\"auser. The final authenticated version is available online at: https://doi.org/10.1007/978-3-031-29973-5. We have corrected and clarified the statements of Propositions 8.28 and 8.31
A dynamical version of Silverman-Tate's height inequality
Creators: name: Biswas, Debam
name: Chen, Zhelun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G50, 14G40

description: In the paper "Uniformity of Mordell-Lang" by Vesselin Dimitrov, Philipp Habegger and Ziyang Gao (arXiv:2001.10276), they use Silverman-Tate's Height Inequality and they give a proof of the same which makes use of Cartier divisors and hence drops the flatness assumption of structure morphisms of compactified abelian schemes. However, their proof makes use of Hironaka's theorem on resolution of singularities which is unknown for fields of positive characteristic. We try to slightly modify their ideas, use blow-ups in place of Hironaka's theorem to make the proof effective for any fields with product formula where heights can be defined and any normal quasi-projective variety as a base. We work in the more general set up of dynamical systems. As an application we prove certain variant of Silverman's Specialization Theorem with restricted hypotheses in higher dimensional bases.
The dynamics of the spherical p-spin model: from microscopic to asymptotics
Creators: name: Kim, B.
name: Latz, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have numerically investigated the mean-field dynamics of the the $p$-spin interaction spin glass model with p=3 using an efficient method of integrating the dynamic equations. We find a new time scale associated with the onset of the breakdown of the fluctuation-dissipation theorem in the intermediate time regime. We also find that the off-equilibrium relaxation exhibits a sub-aging behavior in the intermediate times and crosses over to a simple aging in the asymptotic regime.
description: 3 figures
Additional file 10: of Oxygen induces the expression of invasion and stress response genes in the anaerobic salmon parasite Spironucleus salmonicida
Creators: name: Stairs, Courtney
name: Kokla, Anna
name: Ástvaldsson, Ásgeir
name: Jerlström-Hultqvist, Jon
name: Svärd, Staffan
name: Ettema, Thijs
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Figure S6. Expression patterns of S. salmonicida transcription factors in OXY and NAO cells. Evolutionary gene network of all differentially expressed transcription factors in OXY (purple) and/or NAO (orange) cells based on sequence similarity. Each node represents one gene encoding a cysteine-rich protein where edges were weighted by pair-wise sequence identity. Upregulated and downregulated genes are shown in red and blue respectively. Circle nodes with or without dots represent genes that were uniquely differentially regulated in OXY or NAO cells respectively; square nodes represent genes that were similarly differentially regulated in OXY and NAO cells. A summary of the gene expression changes for each condition are shown in the bottom right corner of the network with upregulated, downregulated and non-insignificant/no change (n.s./n.c) represented as up arrowheads, down arrowheads, or dashes respectively. (PDF 805 kb)
Director Field Configurations around a Spherical Particle in a Nematic Liquid Crystal
Creators: name: Stark, Holger
Publisher: name: arXiv
Year: 1998
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the director field around a spherical particle immersed in a uniformly aligned nematic liquid crystal and assume that the molecules prefer a homeotropic orientation at the surface of the particle. Three structures are possible: a dipole, a Saturn-ring, and a surface-ring configuration, which we investigate by numerically minimizing the Frank free energy supplemented by a magnetic-field and a surface term. In the dipole configuration, which is the absolutely stable structure for micron-size particles and sufficiently strong surface anchoring, a twist transition is found and analyzed. We show that a transition from the dipole to the Saturn ring configuration is induced by either decreasing the particle size or by applying a magnetic field. The effect of metastability and the occurence of hysteresis in connection with a magnetic field are discussed. The surface-ring configuration appears when the surface-anchoring strength W is reduced. It is also favored by a large saddle-splay constant K_24. A comparison with recent experiments by Poulin et al. gives a lower bound for W, i.e., W > 0.6 erg/cm^2 for the interface of water and pentylcyanobiphenyl (5CB) in the presence of the surfactant sodium dodecyl sulfate.
description: 11 pages, Revtex, 16 eps figures, submitted to Eur. Phys. J. B
Additional file 1 of Exploring the impact of taurine on the biochemical properties of urate oxidase: response surface methodology and molecular dynamics simulation
Creators: name: Shahmoradipour, Parisa
name: Zaboli, Maryam
name: Torkzadeh-Mahani, Masoud
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Additional file 1: Figure S1. The root mean square deviation of Cα atoms (Cα-RMSD) of uricase in the absence (A) and presence of taurine (B) during the simulation (first run, second run and third run). Figure S2. The SASA value of uricase in the absence (A) and presence of taurine (B) during the simulation (first run, second run and third run). Figure S3. The number of hydrogen bonds between water molecules and uricase in the absence (A) and presence of taurine (B) during the simulation (first run, second run and third run). Figure S4. The number of hydrogen bonds within the protein in the absence (A) and presence of taurine (B) during the simulation (first run, second run and third run). Figure S5. The number of hydrogen bonds between UOX and taurine molecules during the simulation (first run, second run and third run).
Adversarial Attacks and Defenses in Physiological Computing: A Systematic Review
Creators: name: Wu, Dongrui
name: Xu, Jiaxin
name: Fang, Weili
name: Zhang, Yi
name: Yang, Liuqing
name: Xu, Xiaodong
name: Luo, Hanbin
name: Yu, Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Physiological computing uses human physiological data as system inputs in real time. It includes, or significantly overlaps with, brain-computer interfaces, affective computing, adaptive automation, health informatics, and physiological signal based biometrics. Physiological computing increases the communication bandwidth from the user to the computer, but is also subject to various types of adversarial attacks, in which the attacker deliberately manipulates the training and/or test examples to hijack the machine learning algorithm output, leading to possible user confusion, frustration, injury, or even death. However, the vulnerability of physiological computing systems has not been paid enough attention to, and there does not exist a comprehensive review on adversarial attacks to them. This paper fills this gap, by providing a systematic review on the main research areas of physiological computing, different types of adversarial attacks and their applications to physiological computing, and the corresponding defense strategies. We hope this review will attract more research interests on the vulnerability of physiological computing systems, and more importantly, defense strategies to make them more secure.
description: National Science Open, 2022
Simulations of wobble damping in viscoelastic rotators
Creators: name: Quillen, Alice C.
name: Wagner, Katelyn J.
name: Sanchez, Paul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Using a damped mass-spring model, we simulate wobble of spinning homogeneous viscoelastic ellipsoids undergoing non-principal axis rotation. Energy damping rates are measured for oblate and prolate bodies with different spin rates, spin states, viscoelastic relaxation timescales, axis ratios, and strengths. Analytical models using a quality factor by Breiter et al. (2012) and for the Maxwell rheology by Frouard & Efroimsky (2018) match our numerical measurements of the energy dissipation rate after we modify their predictions for the numerically simulated Kelvin-Voigt rheology. Simulations of nearly spherical but wobbling bodies with hard and soft cores show that the energy dissipation rate is more sensitive to the material properties in the core than near the surface. The sensitivity to viscoelastic model implies that inferred statistics of tumbling lifetimes in asteroids might be interpreted in terms of differences in their material properties.
description: accepted MNRAS
Additional file 3: of Conditional cash transfers to retain rural Kenyan women in the continuum of care during pregnancy, birth and the postnatal period: protocol for a cluster randomized controlled trial
Creators: name: Ochieng, Caroline
name: Haghparast-Bidgoli, Hassan
name: Batura, Neha
name: Aloyce Odhiambo
name: Geordan Shannon
name: Copas, Andrew
name: Palmer, Tom
name: Dickin, Sarah
name: Noel, Stacey
name: Fielding, Matthew
name: Sangoro Onyango
name: Odera, Sarah
name: Eleveld, Alie
name: Mwaki, Alex
name: Vanhuyse, Fedra
name: Skordis, Jolene
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: AnnexÂ 11a: Participantâ s information sheet part 1, English. (DOCX 14 kb)
On the Existence of Optimal Transport Gradient for Learning Generative Models
Creators: name: Houdard, Antoine
name: Leclaire, Arthur
name: Papadakis, Nicolas
name: Rabin, Julien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The use of optimal transport cost for learning generative models has become popular with Wasserstein Generative Adversarial Networks (WGAN). Training of WGAN relies on a theoretical background: the calculation of the gradient of the optimal transport cost with respect to the generative model parameters. We first demonstrate that such gradient may not be defined, which can result in numerical instabilities during gradient-based optimization. We address this issue by stating a valid differentiation theorem in the case of entropic regularized transport and specify conditions under which existence is ensured. By exploiting the discrete nature of empirical data, we formulate the gradient in a semi-discrete setting and propose an algorithm for the optimization of the generative model parameters. Finally, we illustrate numerically the advantage of the proposed framework.
Lineshape predictions via Bethe ansatz for the one-dimensional spin-1/2 Heisenberg antiferromagnet in a magnetic field
Creators: name: Karbach, Michael
name: Muller, Gerhard
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The spin fluctuations parallel to the external magnetic field in the ground state of the one-dimensional (1D) s=1/2 Heisenberg antiferromagnet are dominated by a two-parameter set of collective excitations. In a cyclic chain of N sites and magnetization 0 \infty, these collective excitations form a continuum in (q,ω)-space with an incommensurate soft mode. Their matrix elements in the dynamic spin structure factor S_{zz}(q,ω) are calculated directly from the Bethe wave functions for finite N. The resulting lineshape predictions for N -> \infty complement the exact results previously derived via algebraic analysis for the exact 2-spinon part of S_{zz}(q,ω) in the zero-field limit. They are directly relevant for the interpretation of neutron scattering data measured in nonzero field on quasi-1D antiferromagnetic compounds.
description: 10 pages
Realization of Lie algebras and classifying spaces of crossed modules
Creators: name: Félix, Yves
name: Tanré, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P62, 17B55, 55U10

description: The category of complete differential graded Lie algebras provides nice algebraic models for the rational homotopy types of non-simply connected spaces. In particular, there is a realization functor, $\langle -\rangle$, of any complete differential graded Lie algebra as a simplicial set. In a previous article, we considered the particular case of a complete graded Lie algebra, $L_{0}$, concentrated in degree 0 and proved that $\langle L_{0}\rangle$ is isomorphic to the usual bar construction on the Malcev group associated to $L_{0}$.
 Here we consider the case of a complete differential graded Lie algebra, $L=L_{0}\oplus L_{1}$, concentrated in degrees 0 and 1. We establish that the category of such two-stage Lie algebras is equivalent to explicit subcategories of crossed modules and Lie algebra crossed modules, extending the equivalence between pronilpotent Lie algebras and Malcev groups. In particular, there is a crossed module $\mathcal{C}(L)$ associated to $L$. We prove that $\mathcal{C}(L)$ is isomorphic to the Whitehead crossed module associated to the simplicial pair $(\langle L\rangle, \langle L_{0}\rangle)$. Our main result is the identification of $\langle L\rangle$ with the classifying space of $\mathcal{C}(L)$.
Anesthesia grand rounds: enhancing long-term knowledge retention of clinical information
Creators: name: Abad, Julia
name: Hafner, Gretchen
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose: The purpose of this study is to enhance knowledge retention in the resident registered nurse anesthetist using evidence-based, up to date grand rounds presentations. A framework for grand rounds was created based on three themes identified in a review of the literature: peer-to-peer education, the use of audience response systems, and presentation style and formatting.Methodology: A series of interactive grand rounds sessions were integrated into the Nurse Anesthesia program (NAP) of a large, public university with the intention of promoting long-term retention of knowledge among 68 resident registered nurse anesthetists. A prospective quantitative study was performed by the administration of an exam immediately after the session and approximately eight weeks later to determine if the information presented was retained in the long-term. In addition, a survey to assess the thoughts, feelings, and perceived usefulness of the participants toward grand rounds was distributed to participants. Results: Findings of this research included the greatest retention of knowledge at eight weeks post-presentation among those with the most didactic and clinical experience. In addition, participant response was overwhelmingly positive, with the majority expressing that the peer presenters were effective, the sessions were held in a low-stress environment, and that the way in which the information was presented would prompt better recall in the clinical setting as well as potentially impact clinical practice changes. Implications for Practice: The nurse anesthesia resident can take this evidence-based, clinically relevant information and implement this knowledge in the clinical setting, potentially improving patient outcomes.
On-Line Learning with Restricted Training Sets: An Exactly Solvable Case
Creators: name: Rae, H. C.
name: Sollich, P.
name: Coolen, A. C. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We solve the dynamics of on-line Hebbian learning in large perceptrons exactly, for the regime where the size of the training set scales linearly with the number of inputs. We consider both noiseless and noisy teachers. Our calculation cannot be extended to non-Hebbian rules, but the solution provides a convenient and welcome benchmark with which to test more general and advanced theories for solving the dynamics of learning with restricted training sets.
description: 19 pages, eps figures included, uses epsfig macro
Zeros of Rankin-Selberg $L$-functions in families
Creators: name: Humphries, Peter
name: Thorner, Jesse
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $\mathfrak{F}_n$ be the set of all cuspidal automorphic representations $π$ of $\mathrm{GL}_n$ with unitary central character over a number field $F$. We prove the first unconditional zero density estimate for the set $\mathcal{S}=\{L(s,π\timesπ')\colonπ\in\mathfrak{F}_n\}$ of Rankin-Selberg $L$-functions, where $π'\in\mathfrak{F}_{n'}$ is fixed. We use this density estimate to establish (i) a hybrid-aspect subconvexity bound at $s=\frac{1}{2}$ for almost all $L(s,π\timesπ')\in \mathcal{S}$, (ii) a strong on-average form of effective multiplicity one for almost all $π\in\mathfrak{F}_n$, and (iii) a positive level of distribution for $L(s,π\times\tildeπ)$, in the sense of Bombieri-Vinogradov, for each $π\in\mathfrak{F}_n$.
description: 32 pages. Significant revision based on referee comments
From open access as a movement to open science as a policy
Creators: name: Mounier, Pierre
Publisher: name: Zenodo
Year: 2019
Subjects: university press
institutional publishing
open access
academic publishing
scholarly communications

description: This is a presentation by Pierre Mounier from OpenEdition and OPERAS from the AEUP 2nd Conference in Brno, Czech Republic, 13–14 June 2019 “(Re-)Shaping University Presses and Institutional Publishing”.
Instrument-Independent Dastgah Recognition of Iranian Classical Music Using AzarNet
Creators: name: RezezadehAzar, Shahla
name: Ahmadi, Ali
name: Malekzadeh, Saber
name: Samami, Maryam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, AzarNet, a deep neural network (DNN), is proposed to recognizing seven different Dastgahs of Iranian classical music in Maryam Iranian classical music (MICM) dataset. Over the last years, there has been remarkable interest in employing feature learning and DNNs which lead to decreasing the required engineering effort. DNNs have shown better performance in many classification tasks such as audio signal classification compares to shallow processing architectures. Despite image data, audio data need some preprocessing steps to extract spectra and temporal features. Some transformations like Short-Time Fourier Transform (STFT) have been used in the state of art researches to transform audio signals from time-domain to time-frequency domain to extract both temporal and spectra features. In this research, the STFT output results which are extracted features are given to AzarNet for learning and classification processes. It is worth noting that, the mentioned dataset contains music tracks composed with two instruments (violin and straw). The overall f1 score of AzarNet on test set, for average of all seven classes was 86.21% which is the best result ever reported in Dastgah classification according to our best knowledge.
description: Submitted to the 27th Iranian Conference on Electrical Engineering (ICEE 2019)
The Sheaf-Theoretic Structure of Definite Causality
Creators: name: Gogioso, Stefano
name: Pinzani, Nicola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We fill a gap in the study of contextuality by extending the sheaf-theoretic framework for non-locality by Abramsky and Brandenburger to deal with operational scenarios in the presence of arbitrary definite causal orders.
description: This paper has been superseded by arXiv:2206.08911v4, arXiv:2303.07148 and arXiv:2303.09017. Specifically, Definition 3 of Locale of Inputs given in this work is not fit for purpose: Spaces of Input Histories, cf. Definition 3.8 of arXiv:2206.08911v4, should be used instead. If you wish to cite our work or built upon it, this is unlikely to be the right reference
Strange quark stars within the Nambu-Jona-Lasinio model
Creators: name: Hanauske, M.
name: Satarov, L. M.
name: Mishustin, I. N.
name: Stoecker, H.
name: Greiner, W.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the properties of charge-neutral $β$-equilibrium cold quark matter within the Nambu-Jona-Lasinio model. The calculations are carried out for different ratios of coupling constants characterizing the vector and scalar 4-fermion interaction, $ξ\equiv G_V/G_S$. It is shown that for $ξ< 0.4$ matter is self-bound and for $ξ< 0.65$ it has a first order phase transition of the liquid-gas type. The Gibbs conditions in the mixed phase are applied for the case of two chemical potentials associated with the baryon number and electric charge. The characteristics of the quark stars are calculated for $ξ= 0, 0.5$ and 1. It is found that the phase transition leads to a strong density variation at the surface of these stars. For $ξ= 1$ the properties of quark stars show behaviors typical for neutron stars. At $ξ\goo 0.4$ the stars near to the maximum mass have a large admixture of strange quarks in their interiors.
description: 22 pages, 8 ps-figures, Submitted to PRD
Anesthesia grand rounds: enhancing long-term knowledge of clinical information
Creators: name: Hafner, Gretchen
name: Abad, Julia
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose: The purpose of this study is to enhance knowledge retention in the resident registered nurse anesthetist using evidence-based, up to date grand rounds presentations. A framework for grand rounds was created based on three themes identified in a review of the literature: peer-to-peer education, the use of audience response systems, and presentation style and formatting.Methodology: A series of interactive grand rounds sessions were integrated into the Nurse Anesthesia program (NAP) of a large, public university with the intention of promoting long-term retention of knowledge among 68 resident registered nurse anesthetists. A prospective quantitative study was performed by the administration of an exam immediately after the session and approximately eight weeks later to determine if the information presented was retained in the long-term. In addition, a survey to assess the thoughts, feelings, and perceived usefulness of the participants toward grand rounds was distributed to participants. Results: Findings of this research included the greatest retention of knowledge at eight weeks post-presentation among those with the most didactic and clinical experience. In addition, participant response was overwhelmingly positive, with the majority expressing that the peer presenters were effective, the sessions were held in a low-stress environment, and that the way in which the information was presented would prompt better recall in the clinical setting as well as potentially impact clinical practice changes. Implications for Practice: The nurse anesthesia resident can take this evidence-based, clinically relevant information and implement this knowledge in the clinical setting, potentially improving patient outcomes.
Preparation of circular Rydberg states in helium with $n \geq 70$ using a modified version of the crossed-fields method
Creators: name: Morgan, A. A.
name: Zhelyazkova, V.
name: Hogan, S. D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Circular Rydberg states with $n=70$ have been prepared in helium using a modified version of the crossed-fields method. This approach to the preparation of high-$n$ circular Rydberg states overcomes limitations of the standard crossed-fields method which arise at this, and higher, values of $n$. The experiments were performed with atoms traveling in pulsed supersonic beams that were initially laser photoexcited from the metastable 1s2s$\,^3$S$_1$ level to the 1s73s$\,^3$S$_1$ level by resonance-enhanced two-color two-photon excitation in a magnetic field of 16.154 G. These excited atoms were then polarized using a perpendicular electric field of 0.844~V/cm, and transferred by a pulse of microwave radiation to the state that, when adiabatically depolarized, evolves into the $n=70$ circular state in zero electric field. The excited atoms were detected by state-selective electric field ionization. Each step of the circular state preparation process was validated by comparison with the calculated atomic energy level structure in the perpendicular electric and magnetic fields used. Of the atoms initially excited to the 1s73s$\,^3$S$_1$ level, $\sim80$\% were transferred to the $n=70$ circular state. At these high values of $n$, $Δn = 1$ circular-to-circular Rydberg state transitions occur at frequencies below 20 GHz. Consequently, atoms in these states, and the circular state preparation process presented here, are well suited to hybrid cavity QED experiments with Rydberg atoms and superconducting microwave circuits.
description: 13 pages, 9 figures
Discrepancy in modular arithmetic progressions
Creators: name: Fox, Jacob
name: Xu, Max Wenqiang
name: Zhou, Yunkun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Celebrated theorems of Roth and of Matoušek and Spencer together show that the discrepancy of arithmetic progressions in the first $n$ positive integers is $Θ(n^{1/4})$. We study the analogous problem in the $\mathbb{Z}_n$ setting. We asymptotically determine the logarithm of the discrepancy of arithmetic progressions in $\mathbb{Z}_n$ for all positive integer $n$. We further determine up to a constant factor the discrepancy of arithmetic progressions in $\mathbb{Z}_n$ for many $n$. For example, if $n=p^k$ is a prime power, then the discrepancy of arithmetic progressions in $\mathbb{Z}_n$ is $Θ(n^{1/3+r_k/(6k)})$, where $r_k \in \{0,1,2\}$ is the remainder when $k$ is divided by $3$. This solves a problem of Hebbinghaus and Srivastav.
description: 22 pages + 4 pages appendix
Additional file 2: of Conditional cash transfers to retain rural Kenyan women in the continuum of care during pregnancy, birth and the postnatal period: protocol for a cluster randomized controlled trial
Creators: name: Ochieng, Caroline
name: Haghparast-Bidgoli, Hassan
name: Batura, Neha
name: Aloyce Odhiambo
name: Geordan Shannon
name: Copas, Andrew
name: Palmer, Tom
name: Dickin, Sarah
name: Noel, Stacey
name: Fielding, Matthew
name: Sangoro Onyango
name: Odera, Sarah
name: Eleveld, Alie
name: Mwaki, Alex
name: Vanhuyse, Fedra
name: Skordis, Jolene
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Afya secondary data. Information collected on all women who make facility visits in Siaya County, Kenya. (DOCX 36 kb)
Robustness of Randomized Rumour Spreading
Creators: name: Daknama, Rami
name: Panagiotou, Konstantinos
name: Reisser, Simon
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this work we consider three well-studied broadcast protocols: Push, Pull and Push&Pull. A key property of all these models, which is also an important reason for their popularity, is that they are presumed to be very robust, since they are simple, randomized, and, crucially, do not utilize explicitly the global structure of the underlying graph. While sporadic results exist, there has been no systematic theoretical treatment quantifying the robustness of these models. Here we investigate this question with respect to two orthogonal aspects: (adversarial) modifications of the underlying graph and message transmission failures. We explore in particular the following notion of Local Resilience: beginning with a graph, we investigate up to which fraction of the edges an adversary has to be allowed to delete at each vertex, so that the protocols need significantly more rounds to broadcast the information. Our main findings establish a separation among the three models. It turns out that Pull is robust with respect to all parameters that we consider. On the other hand, Push may slow down significantly, even if the adversary is allowed to modify the degrees of the vertices by an arbitrarily small positive fraction only. Finally, Push&Pull is robust when no message transmission failures are considered, otherwise it may be slowed down. On the technical side, we develop two novel methods for the analysis of randomized rumour spreading protocols. First, we exploit the notion of self-bounding functions to facilitate significantly the round-based analysis: we show that for any graph the variance of the growth of informed vertices is bounded by its expectation, so that concentration results follow immediately. Second, in order to control adversarial modifications of the graph we make use of a powerful tool from extremal graph theory, namely Szemerèdi's Regularity Lemma.
description: version 2: more thorough literature review
Electron Correlations in Narrow Energy Bands: Ground State Energy and Metal-Insulator Transition
Creators: name: Didukh, Leonid
name: Skorenkyy, Yuriy
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The electron correlations in narrow energy bands are examined in framework of the Hubbard model. The single-particle Green function and energy spectrum are obtained in paramagnetic state at half-filling by means of new two-pole approximation. In the ground state analitical expressions for the energy gap, polar states concentration and energy of the system are found. Metal-insulator transitions in the model at change of bandwidth or temperature are investigated. The obtained results are used for interpretation of some experimental data in narrow-band materials.
description: 12 pages, 11 eps figures, Latex 2.09