cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prevalence and Determinants of Herbal Medicine Use among Adults Attending the National Health Insurance Clinic of Abubakar Tafawa Balewa University Teaching Hospital, Bauchi, Nigeria.pdf
Creators: name: Maiyegun, Afisulahi
Publisher: name: figshare
Year: 2022
Subjects: subject: 110499 Complementary and Alternative Medicine not elsewhere classified
subject: FOS: Clinical medicine
subject: 111717 Primary Health Care
subject: FOS: Health sciences
subject: 111502 Clinical Pharmacology and Therapeutics

description: This is a cross-sectional study about the use herbal medicine among patients with health insurance in Nigeria
CP violation: Dalitz interference, CPT and FSI
Creators: name: Nogueira, J. H. Alvarenga
name: Bediaga, I.
name: Cavalcante, A. B. R.
name: Frederico, T.
name: Lourenço, O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Resonances and final state interactions (FSI) play a role in the formation of CP violation (CPV) constrained by CPT invariance. We provide a general formulation of CPV including resonances and FSI starting from the CPT constraint. Our discussion is elaborated within a simple $B$ decay model with the $ρ$ and $f_0(980)$ resonances plus a non resonant background including the $ππ\to KK$ coupled amplitude. We consider few illustrative examples to show the interference patterns appearing in the CP asymmetry, namely, that from the $ρ$ resonance plus a non-resonant amplitude, and that from the interference of the $ρ$ and $f_0(980)$ resonances. We perform the fit of the CP asymmetry for the charmless three-body $B^\pm$ decay channel $B^{\pm}\to π^{\pm} π^+π^-$ and obtain as outcome the $B^{\pm}\to π^{\pm} K^+K^-$ for $ππ$ channel asymmetry in the mass region below $1.6$ GeV in fair agreement with the new data LHCb data. Analogously, we also describe the CP asymmetry of the $B^\pm\to K^\pmπ^+π^-$ decay, with that from the $B^\pm\to K^\pm K^+K^-$ channel obtained as output. As in the previous case, we also found agreement with LHCb experimental data.
description: 16 pages, 12 figures. Changes in the pages format to match published version
Classical and consecutive pattern avoidance in rooted forests
Creators: name: Garg, Swapnil
name: Peng, Alan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Following Anders and Archer, we say that an unordered rooted labeled forest avoids the pattern $σ\in\mathcal{S}_k$ if in each tree, each sequence of labels along the shortest path from the root to a vertex does not contain a subsequence with the same relative order as $σ$. For each permutation $σ\in\mathcal{S}_{k-2}$, we construct a bijection between $n$-vertex forests avoiding $(σ)(k-1)k:=σ(1)\cdotsσ(k-2)(k-1)k$ and $n$-vertex forests avoiding $(σ)k(k-1):=σ(1)\cdotsσ(k-2)k(k-1)$, giving a common generalization of results of West on permutations and Anders--Archer on forests. We further define a new object, the forest-Young diagram, which we use to extend the notion of shape-Wilf equivalence to forests. In particular, this allows us to generalize the above result to a bijection between forests avoiding $\{(σ_1)k(k-1), (σ_2)k(k-1), \dots, (σ_\ell)k(k-1)\}$ and forests avoiding $\{(σ_1)(k-1)k, (σ_2)(k-1)k, \dots, (σ_\ell)(k-1)k\}$ for $σ_1, \dots, σ_\ell \in \mathcal{S}_{k-2}$. Furthermore, we give recurrences enumerating the forests avoiding $\{123\cdots k\}$, $\{213\}$, and other sets of patterns. Finally, we extend the Goulden--Jackson cluster method to study consecutive pattern avoidance in rooted trees as defined by Anders and Archer. Using the generalized cluster method, we prove that if two length-$k$ patterns are strong-c-forest-Wilf equivalent, then up to complementation, the two patterns must start with the same number. We also prove the surprising result that the patterns $1324$ and $1423$ are strong-c-forest-Wilf equivalent, even though they are not c-Wilf equivalent with respect to permutations.
description: 39 pages, 11 figures; incorporated reviewer comments
3D technologies and applications in sign language
Creators: name: Stefanidis Kiriakos
name: Konstantinidis Dimitrios
name: Kalvourtzis Thanassis
name: Dimitropoulos Kosmas
name: Daras Petros
Publisher: name: Zenodo
Year: 2020

description: Millions of people suffering from partial or complete hearing loss use variants of sign language to communicate with each other or hearing people in their everyday life. Thus, it is imperative to develop systems to assist these people by removing the barriers that affect their social inclusion. These systems should aim towards capturing sign language in an accurate way, classifying sign language to natural words and representing sign language by having avatars or synthesized videos execute the exact same moves that convey a meaning in the sign language. This chapter reviews current state-of-the-art approaches that attempt to solve sign language recognition and representation and analyzes the challenges they face. Furthermore, this chapter presents a novel AI-based solution to the problem of robust sign language capturing and representation, as well as a solution to the unavailability of annotated sign language datasets before limitations and directions for future work are discussed.
Polaronic metal state at the LaAlO3/SrTiO3 interface
Creators: name: Cancellieri, C.
name: Mishchenko, A. S.
name: Aschauer, U.
name: Filippetti, A.
name: Faber, C.
name: Barisic, O. S.
name: Rogalev, V. A.
name: Schmitt, T.
name: Nagaosa, N.
name: Strocov, V. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Interplay of spin, charge, orbital and lattice degrees of freedom in oxide heterostructures results in a plethora of fascinating properties, which can be exploited in new generations of electronic devices with enhanced functionalities. The paradigm example is the interface between the two band insulators LaAlO3 and SrTiO3 (LAO/STO) that hosts two-dimensional electron system (2DES). Apart from the mobile charge carriers, this system exhibits a range of intriguing properties such as field effect, superconductivity and ferromagnetism, whose fundamental origins are still debated. Here, we use soft-X-ray angle-resolved photoelectron spectroscopy to penetrate through the LAO overlayer and access charge carriers at the buried interface. The experimental spectral function directly identifies the interface charge carriers as large polarons, emerging from coupling of charge and lattice degrees of freedom, and involving two phonons of different energy and thermal activity. This phenomenon fundamentally limits the carrier mobility and explains its puzzling drop at high temperatures.
A Kaplansky Theorem for JB*-triples
Creators: name: Fernández-Polo, Francisco J.
name: Garcés, Jorge J.
name: Peralta, Antonio M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Let $T:E\rightarrow F$ be a non-necessarily continuous triple homomorphism from a (complex) JB$^*$-triple (respectively, a (real) J$^*$B-triple) to a normed Jordan triple. The following statements hold:
 (1) $T$ has closed range whenever $T$ is continuous
 (2) $T$ has closed range whenever $T$ is continuous
 This result generalises classical theorems of I. Kaplansky and S.B. Cleveland in the setting of C$^*$-algebras and of A. Bensebah and J.Pérez, L. Rico and A. Rodr'\iguez Palacios in the setting of JB$^*$-algebras.
Interferometric HI intensity mapping: perturbation theory predictions and foreground removal effects
Creators: name: Pourtsidou, Alkistis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We provide perturbation theory predictions for the HI intensity mapping power spectrum multipoles using the Effective Field Theory of Large Scale Structure (EFTofLSS), which should allow us to constrain cosmological parameters exploiting mildly nonlinear scales. Assuming survey specifications typical of proposed interferometric HI intensity mapping experiments like CHORD and PUMA, and realistic ranges of validity for the perturbation theory modelling, we run mock full shape MCMC analyses at a redshift bin centred at $z=0.5$, and compare with Stage-IV optical galaxy surveys. We include the impact of 21cm foreground removal using simulations-based prescriptions, and quantify the effects on the precision and accuracy of the parameter estimation. We vary 11 parameters in total: 3 cosmological parameters, 7 bias and counterterms parameters, and the HI brightness temperature. Amongst them, the 4 parameters of interest are: the cold dark matter density, $ω_{\rm c}$, the Hubble parameter, $h$, the primordial amplitude of the power spectrum, $A_{\rm s}$, and the linear HI bias, $b_1$. For the best case scenario, we obtain unbiased constraints on all parameters with $<3\%$ errors at $68\%$ confidence level. When we include the foreground removal effects, the parameter estimation becomes strongly biased for $ω_{\rm c}, h$, and $b_1$, while $A_{\rm s}$ is less biased ($< 2σ$). We find that scale cuts $k_{\rm min} \geq 0.03 \, h/{\mathrm{Mpc}}$ are required to return accurate estimates for $ω_{\rm c}$ and $h$, at the price of a decrease in the precision, while $b_1$ remains strongly biased. We comment on the implications of these results for real data analyses.
description: 11 pages, 1 table, 10 figures; matches version accepted for publication in MNRAS
Anomalous edge plasma transport, neutrals, and divertor plasma detachment
Creators: name: Zhang, Yanzeng
name: Krasheninnikov, Sergei I.
name: Masline, Rebecca
name: Smirnov, Roman D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: An impact of neutrals on anomalous edge plasma transport and zonal flow (ZF) is considered. As an example, it is assumed that edge plasma turbulence is driven by the resistive drift wave (RDW) instability. It is found that the actual effect of neutrals is not related to a suppression of the instability \textit{per se}, but due to an impact on the ZF. Particularly, it is shown that, whereas the neutrals make very little impact on the linear growth rate of the RDW instability, they can largely reduce the zonal flow generation in the nonlinear stage, which results in an enhancement of the overall anomalous plasma transport. Even though only RDW instability is considered, it seems that such an impact of neutrals on anomalous edge plasma transport has a very generic feature. It is conceivable that such neutral induced enhancement of anomalous plasma transport is observed experimentally in a detached divertor regime, which is accompanied by a strong increase of neutral density.
The star formation history in the last 10 billion years from CIB cross-correlations
Creators: name: Jego, Baptiste
name: Ruiz-Zapatero, Jaime
name: García-García, Carlos
name: Koukoufilippas, Nick
name: Alonso, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Cosmic Infrared Background (CIB) traces the emission of star-forming galaxies throughout all cosmic epochs. Breaking down the contribution from galaxies at different redshifts to the observed CIB maps would allow us to probe the history of star formation. In this paper, we cross-correlate maps of the CIB with galaxy samples covering the range $z\lesssim2$ to measure the bias-weighted star-formation rate (SFR) density $\langle bρ_{\rm SFR}\rangle$ as a function of time in a model independent way. This quantity is complementary to direct measurements of the SFR density $ρ_{\rm SFR}$, giving a higher weight to more massive haloes, and thus provides additional information to constrain the physical properties of star formation. Using cross-correlations of the CIB with galaxies from the DESI Legacy Survey and the extended Baryon Oscillation Spectroscopic Survey, we obtain high signal-to-noise ratio measurements of $\langle bρ_{\rm SFR}\rangle$, which we then use to place constraints on halo-based models of the star-formation history. We fit halo-based SFR models to our data and compare the recovered $ρ_{\rm SFR}$ with direct measurements of this quantity. We find a qualitatively good agreement between both independent datasets, although the details depend on the specific halo model assumed. This constitutes a useful robustness test for the physical interpretation of the CIB, and reinforces the role of CIB maps as valuable astrophysical probes of the large-scale structure. We report our measurements of $\langle bρ_{\rm SFR}\rangle$ as well as a thorough account of their statistical uncertainties, which can be used to constrain star formation models in combination with other data.
description: 17 pages, 11 figures, comments welcome
Explicit solutions for a class of nonlinear backward stochastic differential equations and their nodal sets
Creators: name: Chen, Zengjing
name: Liu, Shuhui
name: Qian, Zhongmin
name: Xu, Xingcheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this paper, we investigate a class of nonlinear backward stochastic differential equations (BSDEs) arising from financial economics, and give specific information about the nodal sets of the related solutions. As applications, we are able to obtain the explicit solutions to an interesting class of nonlinear BSDEs including the k-ignorance BSDE arising from the modeling of ambiguity of asset pricing.
title: NGAL - a possible new biomarker to predict renal dysfunction after CE-CT
Creators: name: Kajiyama, Akiko
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Abdomen
subject: CT
subject: Contrast agent-intravenous

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Contrast induced nephropathy (CIN) is a serious complication induced by contrast media, which is defined as either an increase in serum creatinine (sCr) by more than 0.5mg/dl or a 25% increase from the baseline value within 72 hours of intravascular...
Quantum Hall effect and Quillen metric
Creators: name: Klevtsov, Semyon
name: Ma, Xiaonan
name: Marinescu, George
name: Wiegmann, Paul
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the generating functional, the adiabatic curvature and the adiabatic phase for the integer quantum Hall effect (QHE) on a compact Riemann surface. For the generating functional we derive its asymptotic expansion for the large flux of the magnetic field, i.e., for the large degree $k$ of the positive Hermitian line bundle $L^k$. The expansion consists of the anomalous and exact terms. The anomalous terms are the leading terms of the expansion. This part is responsible for the quantization of the adiabatic transport coefficients in QHE. We then identify the non-local (anomalous) part of the expansion with the Quillen metric on the determinant line bundle, and the subleading exact part with the asymptotics of the regularized spectral determinant of the Laplacian for the line bundle $L^k$, at large $k$. Finally, we show how the generating functional of the integer QHE is related to the gauge and gravitational (2+1)d Chern-Simons functionals. We observe the relation between the Bismut-Gillet-Soulé curvature formula for the Quillen metric and the adiabatic curvature for the electromagnetic and geometric adiabatic transport of the integer Quantum Hall state. Then we relate the adiabatic phase in QHE to the eta invariant and show that the geometric part of the adiabatic phase is given by the Chern-Simons functional.
description: 36 pages, v4: greatly expanded version, added: references, Sec. 1.1 and Appendix A with background material, examples in Sec. 2.3 and Sec. 4, Thm. 3 and Sec. 5 expanded with more details on the relation between the adiabatic phase, eta invariant and Chern-Simons functional. To appear in Commun. Math. Phys
Mantle mineralogy limits to rocky planet water inventories
Creators: name: Guimond, Claire Marie
name: Shorttle, Oliver
name: Rudge, John F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Nominally anhydrous minerals in rocky planet mantles can sequester oceans of water as a whole, giving a constraint on bulk water inventories. Here we predict mantle water capacities from the thermodynamically-limited solubility of water in their constituent minerals. We report the variability of mantle water capacity due to (i) host star refractory element abundances that set mineralogy, (ii) realistic mantle temperature scenarios, and (iii) planet mass. We find that planets large enough to stabilise perovskite almost unfailingly have a dry lower mantle, topped by a high-water-capacity transition zone which may act as a bottleneck for water transport within the planet's interior. Because the pressure of the ringwoodite-perovskite phase boundary defining the lower mantle is roughly insensitive to planet mass, the relative contribution of the upper mantle reservoir will diminish with increasing planet mass. Large rocky planets therefore have disproportionately small mantle water capacities. In practice, our results would represent initial water concentration profiles in planetary mantles where their primordial magma oceans are water-saturated. We suggest that a considerable proportion of massive rocky planets' accreted water budgets would form surface oceans or atmospheric water vapour immediately after magma ocean solidification, possibly diminishing the likelihood of these planets hosting land. This work is a step towards understanding planetary deep water cycling, thermal evolution as mediated by rheology and melting, and the frequency of waterworlds.
description: 20 pages, 7 figures; this version accepted for publication in MNRAS
Antimatter as Macroscopic Dark Matter
Creators: name: Sidhu, Jagjit Singh
name: Scherrer, Robert J.
name: Starkman, Glenn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Antimatter macroscopic dark matter (macros) refers to a generic class of antimatter dark matter candidates that interact with ordinary matter primarily through annihilation with large cross-sections. A combination of terrestrial, astrophysical, and cosmological observations constrain a portion of the anti-macro parameter space. However, a large region of the parameter space remains unconstrained, most notably for nuclear-dense objects.
description: 13 pages, 1 figure
Sustainable Cost Models for mHealth at Scale: Modeling Program Data from m4RH Tanzania
Creators: name: L'Engle, Kelly
name: Mangone, Emily R.
name: Orkis, Jennifer
name: Karam, Robert
name: Lasway, Christine
name: Zan, Trinity
name: Agarwal, Smisha
name: Van Beijma, Hajo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: BackgroundThere is increasing evidence that mobile phone health interventions (“mHealth”) can improve health behaviors and outcomes and are critically important in low-resource, low-access settings. However, the majority of mHealth programs in developing countries fail to reach scale. One reason may be the challenge of developing financially sustainable programs. The goal of this paper is to explore strategies for mHealth program sustainability and develop cost-recovery models for program implementers using 2014 operational program data from Mobile for Reproductive Health (m4RH), a national text-message (SMS) based health communication service in Tanzania.MethodsWe delineated 2014 m4RH program costs and considered three strategies for cost-recovery for the m4RH program: user pay-for-service, SMS cost reduction, and strategic partnerships. These inputs were used to develop four different cost-recovery scenarios. The four scenarios leveraged strategic partnerships to reduce per-SMS program costs and create per-SMS program revenue and varied the structure for user financial contribution. Finally, we conducted break-even and uncertainty analyses to evaluate the costs and revenues of these models at the 2014 user volume (125,320) and at any possible break-even volume.ResultsIn three of four scenarios, costs exceeded revenue by $94,596, $34,443, and $84,571 at the 2014 user volume. However, these costs represented large reductions (54%, 83%, and 58%, respectively) from the 2014 program cost of $203,475. Scenario four, in which the lowest per-SMS rate ($0.01 per SMS) was negotiated and users paid for all m4RH SMS sent or received, achieved a $5,660 profit at the 2014 user volume. A Monte Carlo uncertainty analysis demonstrated that break-even points were driven by user volume rather than variations in program costs.ConclusionsThese results reveal that breaking even was only probable when all SMS costs were transferred to users and the lowest per-SMS cost was negotiated with telecom partners. While this strategy was sustainable for the implementer, a central concern is that health information may not reach those who are too poor to pay, limiting the program’s reach and impact. Incorporating strategies presented here may make mHealth programs more appealing to funders and investors but need further consideration to balance sustainability, scale, and impact.
Photometric redshift estimation of strongly lensed galaxies
Creators: name: Langeroodi, Danial
name: Sonnenfeld, Alessandro
name: Hoekstra, Henk
name: Agnello, Adriano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Around $10^5$ strongly lensed galaxies are expected to be discovered with Euclid and the LSST. Utilising these large samples to study the inner structure of lens galaxies requires source redshifts, to turn lens models into mass measurements. However, obtaining spectroscopic source redshifts for large lens samples is prohibitive with the capacity of spectroscopic facilities. Alternatively, we study the possibility of obtaining source photometric redshifts (photo-zs) for large lens samples. Our strategy consists of deblending the source and lens light by simultaneously modelling the lens and background source in all available photometric bands, and feeding the derived source colours to a template-fitting photo-z algorithm. We describe the lens and source light with a Sersic profile, and the lens mass with a Singular Isothermal Ellipsoid. We test our approach on a simulated and a real sample of lenses, both in broad-band photometry of the Hyper Suprime-Cam survey. We identify the deviations of the lens light from a Sersic profile and the contrast between the lens and source image as the main drivers of the source colour measurement error. We split the real sample based on the ratio $Λ$ of the lens to source surface brightness measured at the image locations. In the $Λ<1$ regime, the photo-z outlier fraction is $20\%$, and the accuracy of photo-z estimation is limited by the performance of template-fitting process. In the opposite regime, the photo-z outlier fraction is $75\%$, and the errors from the source colour measurements dominate the photo-z uncertainty. Measuring source photo-zs for lenses with $Λ<1$ poses no particular challenges, compared to isolated galaxies. For systems with significant lens light contamination, however, improving the description of the surface brightness distribution of the lens is required: a single Sersic model is not sufficiently accurate.
description: 15 pages, 13 figures, Accepted for Publication in A&A
Numerical simulation of solitary gravity waves on deep water with constant vorticity
Creators: name: Dosaev, A. S.
name: Shishina, M. I.
name: Troitskaya, Yu. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a numerical study of essentially nonlinear dynamics of surface gravity waves on deep water with constant vorticity using governing equations in conformal coordinates. The dispersion relation of surface gravity waves on shear flow is known to have two branches, one of which is weakly dispersive for long waves. Weakly nonlinear evolution of the waves of this branch can be described by the Benjamin-Ono equation, which is integrable and has soliton and multi-soliton solutions. Currently, the extent to which the properties of such solitary waves obtained within the weakly nonlinear model are preserved in the exact Euler equations is unknown. We investigate the behaviour of this class of solitary waves without the restrictive assumption of weak nonlinearity by using the exact Euler equations. The evolution of localized initial perturbations leading to the formation of single or multiple solitary waves is modeled, and the properties of finite-amplitude solitary waves are discussed. We show that within the framework of the exact equations, two-soliton collisions are almost elastic, but in contrast to solutions of the Benjamin-Ono equation the waves receive a phase shift as a result of the interaction.
On gradient enriched elasticity theories: A reply to "Comment on 'On non-singular crack fields in Helmholtz type enriched elasticity theories' " and important theoretical aspects
Creators: name: Lazar, Markus
name: Agiasofitou, Eleni
name: Polyzos, Demosthenes
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Comment by Aifantis that criticizes the article 'On non-singular crack fields in Helmholtz type enriched elasticity theories' [Lazar, M., Polyzos, D., 2014. Int. J. Solids Struct. doi: 10.1016/j.ijsolstr.2014.01.002] is refuted by means of clear and straightforward arguments. Important theoretical aspects of gradient enriched elasticity theories which emerge in this work are also discussed.
description: 6 pages
Non-Trivial Steenrod Squares on Prime, Hyperbolic and Satellite Knots
Creators: name: Bodish, Holt
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We show that there are prime knots so that the Steenrod operations of Lipshitz and Sarkar arXiv:1204.5776 are non trivial on their Khovanov homology. This answers a question posed by Lipshitz and Sarkar in their paper arXiv:1709.03602. We then go on to show that there are hyperbolic and satellite knots so that the Steenrod operations are non trivial on their Khovanov homology.
description: 9 pages, 10 figures
Supersymmetric Duality in Deformed Superloop Space
Creators: name: Faizal, Mir
name: Tsun, Tsou Sheung
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we will analyse the superloop space formalism for a four dimensional supersymmetric Yang-Mills theory in deformed superspace. We will deform the $\mathcal{N} =1$ superspace by imposing non-anticommutativity. This non-anticommutative deformation of the superspace will break half the supersymmetry of the original theory. So, this theory will have $\mathcal{N} =1/2$ supersymmetry. We will analyse the superloop space duality for this deformed supersymmetric Yang-Mills theory using the $\mathcal{N} =1/2$ superspace formalism. We will demonstrate that the sources in the original theory will become monopoles in the dual theory, and the monopoles in the original theory will become sources in the dual theory.
description: 12 pages, 0 figures, Accepted for publication in Found Phys
The gauge coupled two-body problem in a ring
Creators: name: Priestley, Joel
name: Valentí-Rojas, Gerard
name: Wright, Ewan M.
name: Öhberg, Patrik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the properties of two quantum particles which are confined in a ring. The particles interact via a long-range gauge potential proportional to the distance between the particles. It is found that the two-body ground state corresponds to a state with non-zero angular momentum provided that the interaction between the particles is strong enough. In addition, the particles are correlated in the sense that depending on the interaction strength there is a propensity to be found close together or separated in the ring. We discuss the effect of measuring the position of one of the particles and thereby removing the particle from the ring, where we show that the remaining particle can be prepared in a non-dispersive state with non-zero angular momentum.
Temperature Regimes Impact Coral Assemblages along Environmental Gradients on Lagoonal Reefs in Belize
Creators: name: Castillo, Karl D.
name: Baumann, Justin H.
name: Aichelman, Hannah E.
name: Davies, Sarah W.
name: Courtney, Travis A.
name: Townsend, Joseph E.
name: Lima, Fernando P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Coral reefs are increasingly threatened by global and local anthropogenic stressors such as rising seawater temperature, nutrient enrichment, sedimentation, and overfishing. Although many studies have investigated the impacts of local and global stressors on coral reefs, we still do not fully understand how these stressors influence coral community structure, particularly across environmental gradients on a reef system. Here, we investigate coral community composition across three different temperature and productivity regimes along a nearshore-offshore gradient on lagoonal reefs of the Belize Mesoamerican Barrier Reef System (MBRS). A novel metric was developed using ultra-high-resolution satellite-derived estimates of sea surface temperatures (SST) to classify reefs as exposed to low (lowTP), moderate (modTP), or high (highTP) temperature parameters over 10 years (2003 to 2012). Coral species richness, abundance, diversity, density, and percent cover were lower at highTP sites relative to lowTP and modTP sites, but these coral community traits did not differ significantly between lowTP and modTP sites. Analysis of coral life history strategies revealed that highTP sites were dominated by hardy stress-tolerant and fast-growing weedy coral species, while lowTP and modTP sites consisted of competitive, generalist, weedy, and stress-tolerant coral species. Satellite-derived estimates of Chlorophyll-a (chl-a) were obtained for 13-years (2003–2015) as a proxy for primary production. Chl-a concentrations were highest at highTP sites, medial at modTP sites, and lowest at lowTP sites. Notably, thermal parameters correlated better with coral community traits between site types than productivity, suggesting that temperature (specifically number of days above the thermal bleaching threshold) played a greater role in defining coral community structure than productivity on the MBRS. Dominance of weedy and stress-tolerant genera at highTP sites suggests that corals utilizing these two life history strategies may be better suited to cope with warmer oceans and thus may warrant protective status under climate change.
Investigation of the applicability of Cu–Fe–Mn–Ni based high entropy and compositionally complex alloys as metal matrix composites for cobalt free hot-pressed diamond tools
Creators: name: Timmer, Christian
name: Tillmann, Wolfgang
name: Wojarski, Lukas
name: Ferreira, Manuel Pinho
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: CALPHAD simulation
subject: Mechanical alloying
subject: High-entropy alloys (HEAs)
subject: Compositionally complex alloys (CCAs)
subject: Hot pressing
subject: Diamond tools
subject: 620
subject: 670
subject: Phasendiagramm
subject: Mechanisches Legieren
subject: Hochentropielegierung
subject: Legierung
subject: Heißpressen
subject: Diamantwerkzeug

description: Due to the rising demand and carcinogenic effect of cobalt, alternative metal matrixes need to be developed for hot-pressed diamond tools. Due to this reason High-Entropy alloys without cobalt were calculated via phase fraction diagrams. Three alloys of the Al–Cu–Fe–Mn–Ni system Al30Cu30Fe5Mn25Ni10, Al11.25Cu35Fe5Mn20Ni28.75 and Al5Cu20Fe25Mn25Ni25 were chosen due to their different crystal structures ranging from pure bcc, eutectic fcc-bcc to pure fcc crystal structure. Cr5Cu20Fe25Mn25Ni25 was chosen to verify the change of one element on the consolidation properties. The alloys were mechanically alloyed and hot-pressed at 800 °C for 3 min without and at 900 °C for 3 min with diamonds. Porosity increased with the fraction of bcc solid solution in the investigated alloys of the Al–Cu–Fe–Mn–Ni system. Samples consisting of Cr5Cu20Fe25Mn25Ni25 showed the lowest porosity, which was attributed to precipitation of a second copper-rich fcc solid solution around the remaining pores. At a process temperature of 800 °C and 3 min isothermal hold the samples featured a porosity of only 2.72%. Within the XRD patterns and SEM images of the hot-pressed samples with diamonds no graphitization or formation of carbides could be observed. Therefore, Cr5Cu20Fe25Mn25Ni25 was identified as a promising cobalt free metal-matrix candidate for diamond tools.
description: Journal of materials research and technology;26
Split abelian surfaces over finite fields and reductions of genus-2 curves
Creators: name: Achter, Jeff
name: Howe, Everett W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14K15, 11G10, 11G20, 11G30

description: For prime powers q, let s(q) denote the probability that a randomly-chosen principally-polarized abelian surface over the finite field F_q is not simple. We show that there are positive constants B and C such that for all q, B (log q)^{-3}(log log q)^{-4} < s(q)sqrt(q) < C (log q)^4(log log q)^2, and we obtain better estimates under the assumption of the generalized Riemann hypothesis. If A is a principally-polarized abelian surface over a number field K, let pi_split(A/K, z) denote the number of prime ideals p of K of norm at most z such that A has good reduction at p and A_p is not simple. We conjecture that for sufficiently general A, the counting function pi_split(A/K, z) grows like sqrt(z)/log z. We indicate why our theorem on the rate of growth of s(q) gives us reason to hope that our conjecture is true.
description: 27 pages, 3 figures. V2 incorporates new data courtesy of Andrew Sutherland
Quantum Equilibrium in Stochastic de Broglie-Bohm-Bell Quantum Mechanics
Creators: name: Vink, Jeroen C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper investigates dynamical relaxation to quantum equilibrium in the stochastic de Broglie-Bohm-Bell formulation of quantum mechanics. The time-dependent probability distributions are computed as in a Markov process with slowly varying transition matrices. Numerical simulations, supported by exact results for the large-time behavior of sequences of (slowly varying) transition matrices, confirm previous findings that indicate that de Broglie-Bohm-Bell dynamics allows an arbitrary initial probability distribution to relax to quantum equilibrium; i.e., there is no need to make the ad-hoc assumption that the initial distribution of particle locations has to be identical to the initial probability distribution prescribed by the system's initial wave function. The results presented in this paper moreover suggest that the intrinsically stochastic nature of Bell's formulation, which is arguable most naturally formulated on an underlying discrete space-time, is sufficient to ensure dynamical relaxation to quantum equilibrium for a large class of quantum systems without the need to introduce coarse-graining or any other modification in the formulation.
description: 14 pages, 7 figures
Generic Indic Text-to-speech Synthesisers with Rapid Adaptation in an End-to-end Framework
Creators: name: Prakash, Anusha
name: Murthy, Hema A
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Building text-to-speech (TTS) synthesisers for Indian languages is a difficult task owing to a large number of active languages. Indian languages can be classified into a finite set of families, prominent among them, Indo-Aryan and Dravidian. The proposed work exploits this property to build a generic TTS system using multiple languages from the same family in an end-to-end framework. Generic systems are quite robust as they are capable of capturing a variety of phonotactics across languages. These systems are then adapted to a new language in the same family using small amounts of adaptation data. Experiments indicate that good quality TTS systems can be built using only 7 minutes of adaptation data. An average degradation mean opinion score of 3.98 is obtained for the adapted TTSes. Extensive analysis of systematic interactions between languages in the generic TTSes is carried out. x-vectors are included as speaker embedding to synthesise text in a particular speaker's voice. An interesting observation is that the prosody of the target speaker's voice is preserved. These results are quite promising as they indicate the capability of generic TTSes to handle speaker and language switching seamlessly, along with the ease of adaptation to a new language.
Additional file 1 of A comprehensive map of the aging blood methylome in humans
Creators: name: Seale, Kirsten
name: Teschendorff, Andrew
name: Reiner, Alexander P.
name: Voisin, Sarah
name: Eynon, Nir
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: The supplementary figures for this publication.
Whittaker and Bessel functors for GSp_4
Creators: name: Lysenko, Sergey
Publisher: name: arXiv
Year: 2003
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 11R39, 14H60

description: One of the important technical tools in Gaitsgory's proof of the Vanishing Conjecture appearing in the geometric Langlands correspondence ([3]) is the theory of Whittaker functors for GL_n. We define Whittaker functors for GSp_4 and study their properties. In a sense, these functors correspond to the maximal parabolic subgroup of GSp_4, whose unipotent radical is not commutative. We also study similar functors corresponding to the Siegel parabolic subgroup of GSp_4, they are related with Bessel models for GSp_4 and Waldspurger models for GL_2. We define the Waldspurger category, which is a geometric counterpart of the Waldspurger module over the Hecke algebra of GL_2. We prove a geometric version of the multiplicity one result for Waldspurger models.
description: 52 pages, final version, to appear in Ann. de l'Institut Fourier
title: Aktueller Vergleich zwischen offener retropubischer (RP) und laparoskopischer Roboter-assistierter Prostatektomie (RALPE) – Analyse eines zertifizierten high volume Prostatakarzinom-Zentrums anhand der Daten aus der fachurologischen Anschlussrehabilitation (AHB)
Creators: name: Müller, Guido
name: Hanske, Julian
name: Brock, Marko
name: Palisaar, Rein-Jueri
name: Otto, Ullrich
name: Noldus, Joachim
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Die OP-Methoden RP und RALPE werden in unserer Klinik etwa gleich häufig durchgeführt. Häufig erfolgt danach eine AHB zur Verbesserung des funktionellen Outcomes und psychischen Stabilisierung. Die Analyse der Outcome-Daten ermöglicht einen aktuellen Vergleich der OP-Methoden.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 65. Kongress der Nordrhein-Westfälischen Gesellschaft für Urologie
One-Dimensional Quantum Magnetism in the S = 1/2 Mo(V) system, KMoOP2O7
Creators: name: Abdeldaim, Aly H.
name: Tsirlin, Alexander A.
name: Ollivier, Jacques
name: Ritter, Clemens
name: Fortes, Dominic
name: Perry, Robin S.
name: Clark, Lucy
name: Nilsen, Gøran J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a comprehensive experimental and ab-initio study of the $S=1/2$ Mo$^{5+}$ system, KMoOP$_2$O$_7$, and show that it realizes the $S = 1/2$ Heisenberg chain antiferromagnet model. Powder neutron diffraction reveals that KMoOP$_2$O$_7$ forms a magnetic network comprised of pairs of Mo$^{5+}$ chains within its monoclinic $P2_1/n$ structure. Antiferromagnetic interactions within the Mo$^{5+}$ chains are identified through magnetometry measurements and confirmed by analysis of the magnetic specific heat. The latter reveals a broad feature centred on $T_\textrm{N} = 0.54$ K, which we ascribe to the onset of long-range antiferromagnetic order. No magnetic Bragg scattering is observed in powder neutron diffraction data collected at 0.05 K, however, which is consistent with a strongly suppressed ordered moment with an upper limit $μ_\textrm{ord} < 0.15 μ_\textrm{B}$. The one-dimensional character of the magnetic correlations in KMoOP$_2$O$_7$ is verified through analysis of inelastic neutron scattering data, resulting in a model with $J_\textrm{1} \approx 34$ K and $J_\textrm{2} \approx -2$ K for the intrachain and interchain exchange interactions, respectively. The origin of these experimental findings are addressed through density-functional theory calculations.
description: 10 pages, 7 figures
Black Hole and de Sitter Microstructures from a Semiclassical Perspective
Creators: name: Murdia, Chitraang
name: Nomura, Yasunori
name: Ritchie, Kyle
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe two different, but equivalent semiclassical views of black hole physics in which the equivalence principle and unitarity are both accommodated. In one, unitarity is built-in, while the black hole interior emerges only effectively as a collective phenomenon involving horizon (and possibly other) degrees of freedom. In the other, more widely studied approach, the existence of the interior is manifest, while the unitarity of the underlying dynamics can be captured only indirectly by incorporating certain nonperturbative effects of gravity. These two pictures correspond to a distant description and the description based on entanglement islands/replica wormholes, respectively. We also present a holographic description of de Sitter spacetime based on the former approach, in which the holographic theory is located on the stretched horizon of a static patch. We argue that the existence of these two approaches is rooted in the two formulations of quantum mechanics: the canonical and path integral formalisms.
description: 103 pages, 23 figures
Approximation of conformal mappings using conformally equivalent triangular lattices
Creators: name: Bücking, Ulrike
Publisher: name: arXiv
Year: 2015
Subjects: subject: Complex Variables (math.CV)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 30G25, 30C30, 52C26

description: Consider discrete conformal maps defined on the basis of two conformally equivalent triangle meshes, that is edge lengths are related by scale factors associated to the vertices. Given a smooth conformal map $f$, we show that it can be approximated by such discrete conformal maps $f^ε$. In particular, let $T$ be an infinite regular triangulation of the plane with congruent triangles and only acute angles (i.e.\ $0$ and approximate a compact subset of the domain of $f$ with a portion of it. For $ε$ small enough we prove that there exists a conformally equivalent triangle mesh whose scale factors are given by $\log|f'|$ on the boundary. Furthermore we show that the corresponding discrete conformal maps $f^ε$ converge to $f$ uniformly in $C^1$ with error of order $ε$.
description: 14 pages, 3 figures; v2 typos corrected, revised introduction, some proofs extended
Quartic differentials and harmonic maps in conformal surface geometry
Creators: name: Burstall, Francis
name: Musso, Emilio
name: Pember, Mason
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A31, 53B25, 53C43

description: We consider codimension 2 sphere congruences in pseudo-conformal geometry that are harmonic with respect to the conformal structure of an orthogonal surface. We characterise the orthogonal surfaces of such congruences as either $S$-Willmore surfaces, quasi-umbilical surfaces, constant mean curvature surfaces in 3-dimensional space forms or surfaces of constant lightlike mean curvature in 3-dimensional lightcones. We then investigate Bryant's quartic differential in this context and show that generically this is divergence free if and only if the surface under consideration is either superconformal or orthogonal to a harmonic congruence of codimension 2 spheres. We may then apply the previous result to characterise surfaces with such a property.
description: 15 pages
The Application of Digital Pathology to Improve Accuracy in Glomerular Enumeration in Renal Biopsies
Creators: name: Johnstone, Duncan
name: Barisoni, Laura
name: Bagnasco, Serena
name: Conway, Catherine
name: Hewitt, Stephen M.
name: Avila-Casado, Carmen
name: Nast, Cynthia C.
name: Gasim, Adil
name: Gillespie, Brenda W.
name: Hodgin, Jeffrey B.
name: Troost, Jonathan P.
name: Merlino, Lino
name: Rosenberg, Avi Z.
name: Palmer, Matthew
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: In renal biopsy reporting, quantitative measurements, such as glomerular number and percentage of globally sclerotic glomeruli, is central to diagnostic accuracy and prognosis. The aim of this study is to determine the number of glomeruli and percent globally sclerotic in renal biopsies by means of registration of serial tissue sections and manual enumeration, compared to the numbers in pathology reports from routine light microscopic assessment.
Moduli of metaplectic bundles on curves and Theta-sheaves
Creators: name: Lysenko, Sergey
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 11R39, 14H60

description: We give a geometric interpretation of the Weil representation of the metaplectic group, placing it in the framework of the geometric Langlands program. For a smooth projective curve X we introduce an algebraic stack \tilde\Bun_G of metaplectic bundles on X. It also has a local version \tilde\Gr_G, which is a gerbe over the affine grassmanian of G. We define a categorical version of the (nonramified) Hecke algebra of the metaplectic group. This is a category Sph(\tilde\Gr_G) of certain perverse sheaves on \tilde\Gr_G, which act on \tilde\Bun_G by Hecke operators. A version of the Satake equivalence is proved describing Sph(\tilde\Gr_G) as a tensor category. Further, we construct a perverse sheaf on \tilde\Bun_G corresponding to the Weil representation and show that it is a Hecke eigen-sheaf.
description: LaTeX2e, 54 pages