cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isolated partial Hadamard matrices, and related topics
Creators: name: Banica, Teodor
name: Ozteke, Duygu
name: Pittau, Lorenzo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We study the isolated partial Hadamard matrices, under the assumption that the entries are roots of unity, or more generally, under the assumption that the combinatorics comes from vanishing sums of roots of unity. We first review the various conjectures on the subject, and then we present several new results, regarding notably the master Hadamard matrices, and the McNulty-Weigert construction. We discuss then the notion of isolation in some related contexts, of the magic unitary matrices, and of the quantum permutation groups, with a number of conjectures on the subject.
description: 24 pages
Stable a posteriori LES of 2D turbulence using convolutional neural networks: Backscattering analysis and generalization to higher Re via transfer learning
Creators: name: Guan, Yifei
name: Chattopadhyay, Ashesh
name: Subel, Adam
name: Hassanzadeh, Pedram
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: There is a growing interest in developing data-driven subgrid-scale (SGS) models for large-eddy simulation (LES) using machine learning (ML). In a priori (offline) tests, some recent studies have found ML-based data-driven SGS models that are trained on high-fidelity data (e.g., from direct numerical simulation, DNS) to outperform baseline physics-based models and accurately capture the inter-scale transfers, both forward (diffusion) and backscatter. While promising, instabilities in a posteriori (online) tests and inabilities to generalize to a different flow (e.g., with a higher Reynolds number, Re) remain as major obstacles in broadening the applications of such data-driven SGS models. For example, many of the same aforementioned studies have found instabilities that required often ad-hoc remedies to stabilize the LES at the expense of reducing accuracy. Here, using 2D decaying turbulence as the testbed, we show that deep fully convolutional neural networks (CNNs) can accurately predict the SGS forcing terms and the inter-scale transfers in a priori tests, and if trained with enough samples, lead to stable and accurate a posteriori LES-CNN. Further analysis attributes these instabilities to the disproportionally lower accuracy of the CNNs in capturing backscattering when the training set is small. We also show that transfer learning, which involves re-training the CNN with a small amount of data (e.g., 1%) from the new flow, enables accurate and stable a posteriori LES-CNN for flows with 16x higher Re (as well as higher grid resolution if needed). These results show the promise of CNNs with transfer learning to provide stable, accurate, and generalizable LES for practical use.
description: 30 pages, 12 figures
Additional file 5: of COL6A3 polymorphisms were associated with lung cancer risk in a Chinese population
Creators: name: Duan, Ying
name: Liu, Gaowen
name: Sun, Yao
name: Wu, Jiamin
name: Xiong, Zichao
name: Jin, Tianbo
name: Chen, Mingwei
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Table S2. Significant variants in COL6A3 associated with lung cancer risk in patients with lymph node metastasis. (DOCX 26 kb)
Limit on Higgs boson trilinear self-coupling in coupled technicolor models
Creators: name: Doff, A.
name: Natale, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The trilinear self-coupling of the Higgs boson, in a theory in which this boson is composite, is compared to the experimental bound of this quantity obtained by the CMS experiment. In the case of a model where technicolor (TC) is coupled to QCD, we find that the experimental result already constrain the dynamics of the theory, which is represented by an expression of the technifermion self-energy ($Σ_{tc}$) typical of technicolor coupled models, and function of the dynamically generated technifermion mass and two other parameters that describe the technifermion dynamical mass momentum dependence. The limits imposed on this dynamics allow us to make a simple determination of pseudo-Goldstone boson masses that appear in these theories, indicating that these bosons may be expected to be quite massive.
description: 6 pages, 7 figures, 1 table, version to be published
Elementary equivalence in Artin groups of finite type
Creators: name: Kabiraj, Arpan
name: Prathamesh, T. V. H.
name: Vyas, Rishi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20F10, 20F36 (Primary) 03C07, 20F65 (Secondary)

description: Irreducible Artin groups of finite type can be parametrized via their associated Coxeter diagrams into six sporadic examples and four infinite families, each of which is further parametrized by the natural numbers. Within each of these four infinite families, we investigate the relationship between elementary equivalence and isomorphism. For three out of the four families, we show that two groups in the same family are equivalent if and only if they are isomorphic; a positive, but weaker, result is also attained for the fourth family. In particular, we show that two braid groups are elementarily equivalent if and only if they are isomorphic. As a consequence of our work, we prove that there are infinitely many elementary equivalence classes of irreducible Artin groups of finite type. We also show that mapping class groups of closed surfaces - a geometric analogue of braid groups - are elementarily equivalent if and only if they are isomorphic.
description: 13 pages, version submitted for publication. This version: title shortened, minor improvements
Long N-step Surrogate Stage Reward to Reduce Variances of Deep Reinforcement Learning in Complex Problems
Creators: name: Zhong, Junmin
name: Wu, Ruofan
name: Si, Jennie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: High variances in reinforcement learning have shown impeding successful convergence and hurting task performance. As reward signal plays an important role in learning behavior, multi-step methods have been considered to mitigate the problem, and are believed to be more effective than single step methods. However, there is a lack of comprehensive and systematic study on this important aspect to demonstrate the effectiveness of multi-step methods in solving highly complex continuous control problems. In this study, we introduce a new long $N$-step surrogate stage (LNSS) reward approach to effectively account for complex environment dynamics while previous methods are usually feasible for limited number of steps. The LNSS method is simple, low computational cost, and applicable to value based or policy gradient reinforcement learning. We systematically evaluate LNSS in OpenAI Gym and DeepMind Control Suite to address some complex benchmark environments that have been challenging to obtain good results by DRL in general. We demonstrate performance improvement in terms of total reward, convergence speed, and coefficient of variation (CV) by LNSS. We also provide analytical insights on how LNSS exponentially reduces the upper bound on the variances of Q value from a respective single step method
title: ADCO, Cart. 186 (11 H 71), f. 0219v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0219v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Universal properties of the high- and low-α disk: small intrinsic abundance scatter and migrating stars
Creators: name: Yuxi
name: Lu
name: Ness, Melissa
name: Buck, Tobias
name: Zinn, Joel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detailed age-chemical abundance relations of stars measures time-dependent chemical evolution.These trends offer strong empirical constraints on nucleosynthetic processes, as well as the homogeneityof star-forming gas. Characterizing chemical abundances of stars across the Milky Way over time has been made possible very recently, thanks to surveys like Gaia, APOGEE and Kepler. Studies of the low-$α$ disk have shown that individual elements have unique age-abundance trends and the intrinsic dispersion around these relations is small. In this study, we examine and compare the age distribution of stars across both the high and low-$α$ disk and quantify the intrinsic dispersion of 16 elements around their age-abundance relations at [Fe/H] = 0 using APOGEE DR16. We find the high-$α$ disk has shallower age-abundance relations compared to the low-$α$ disk, but similar median intrinsic dispersions of ~ 0.04 dex, suggesting universal element production mechanisms for the high and low-$α$ disks, despite differences in formation history. We visualize the temporal and spatial distribution of disk stars in small chemical cells, revealing signatures of upside-down and inside-out formation. Further,the metallicity skew and the [Fe/H]-age relations - across radius indicates different initial metallicity gradients and evidence for radial migration. Our study is accompanied by an age catalogue for 64,317 stars in APOGEE derived usingThe Cannon with ~ 1.9 Gyr uncertainty across all ages (APO-CAN stars) as well as a red clump catalogue of 22,031 stars with a contamination rate of 2.7%.
Electrically driven quantum light emission in electromechanically-tuneable photonic crystal cavities
Creators: name: Petruzzella, M.
name: Pagliano, F. M.
name: Zobenica, Z.
name: Birindelli, S.
name: Cotrufo, M.
name: van Otten, F. W. M
name: van der Heijden, R. W.
name: Fiore, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A single quantum dot deterministically coupled to a photonic crystal environment constitutes an indispensable elementary unit to both generate and manipulate single-photons in next-generation quantum photonic circuits. To date, the scaling of the number of these quantum nodes on a fully-integrated chip has been prevented by the use of optical pumping strategies that require a bulky off-chip laser along with the lack of methods to control the energies of nano-cavities and emitters. Here, we concurrently overcome these limitations by demonstrating electrical injection of single excitonic lines within a nano-electro-mechanically tuneable photonic crystal cavity. When an electrically-driven dot line is brought into resonance with a photonic crystal mode, its emission rate is enhanced. Anti-bunching experiments reveal the quantum nature of these on-demand sources emitting in the telecom range. These results represent an important step forward in the realization of integrated quantum optics experiments featuring multiple electrically-triggered Purcell-enhanced single-photon sources embedded in a reconfigurable semiconductor architecture.
Large-scale structure in mimetic Horndeski gravity
Creators: name: Arroja, Frederico
name: Okumura, Teppei
name: Bartolo, Nicola
name: Karmakar, Purnendu
name: Matarrese, Sabino
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we propose to use the mimetic Horndeski model as a model for the dark universe. Both cold dark matter (CDM) and dark energy (DE) phenomena are described by a single component, the mimetic field. In linear theory, we show that this component effectively behaves like a perfect fluid with zero sound speed and clusters on all scales. For the simpler mimetic cubic Horndeski model, if the background expansion history is chosen to be identical to a perfect fluid DE (PFDE) then the mimetic model predicts the same power spectrum of the Newtonian potential as the PFDE model with zero sound speed. In particular, if the background is chosen to be the same as that of LCDM, then also in this case the power spectrum of the Newtonian potential in the mimetic model becomes indistinguishable from the power spectrum in LCDM on linear scales. A different conclusion may be found in the case of non-adiabatic perturbations. We also discuss the distinguishability, using power spectrum measurements from LCDM N-body simulations as a proxy for future observations, between these mimetic models and other popular models of DE. For instance, we find that if the background has an equation of state equal to -0.95 then we will be able to distinguish the mimetic model from the PFDE model with unity sound speed. On the other hand, it will be hard to do this distinction with respect to the LCDM model.
description: v1: 17 pages, 6 figures. v2: minor changes, comments added, replaced to match published version
What is the scale of new physics behind the $B$-flavour anomalies?
Creators: name: Di Luzio, Luca
name: Nardecchia, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the recent hints of lepton flavour non-universality in $B$-meson semi-leptonic decays, we study the constraints of perturbative unitarity on the new physics interpretation of the anomalies in $b \to c \ell \bar ν$ and $b \to s \ell \bar \ell$ transitions. Within an effective field theory approach we find that $2 \to 2$ fermion scattering amplitudes saturate the unitarity bound below 9 TeV and 80 TeV, respectively for $b \to c \ell \bar ν$ and $b \to s \ell \bar \ell$ transitions. Stronger bounds, up to few TeV, are obtained when the leading effective operators are oriented in the direction of the third generation, as suggested by flavour models. We finally address unitarity constraints on simplified models explaining the anomalies and show that the new physics interpretation is ruled out in a class of perturbative realizations.
description: 24 pages, matches EPJC version
Length-Factoriality and Pure Irreducibility
Creators: name: Bu, Alan
name: Vulakh, Joseph
name: Zhao, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: Primary: 13F15, 13A05, Secondary: 16Y60

description: An atomic monoid $M$ is called length-factorial if for every non-invertible element $x \in M$, no two distinct factorizations of $x$ into irreducibles have the same length (i.e., number of irreducible factors, counting repetitions). The notion of length-factoriality was introduced by J. Coykendall and W. Smith in 2011 under the term 'other-half-factoriality': they used length-factoriality to provide a characterization of unique factorization domains. In this paper, we study length-factoriality in the more general context of commutative, cancellative monoids. In addition, we study factorization properties related to length-factoriality, namely, the PLS property (recently introduced by Chapman et al.) and bi-length-factoriality in the context of semirings.
description: Accepted manuscript
On the $C^k$-embedding of Lorentzian manifolds in Ricci-flat spaces
Creators: name: Avalos, Rodrigo
name: Dahia, Fábio
name: Romero, Carlos
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we investigate the problem of non-analytic embeddings of Lorentzian manifolds in Ricci-flat semi-Riemannian spaces. In order to do this, we first review some relevant results in the area, and then motivate both the mathematical and physical interest in this problem. We show that any $n$-dimensional compact Lorentzian manifold $(M^{n},g)$, with $g$ in the Sobolev space $H_{s+3}$, $s>\frac{n}{2}$, admits an isometric embedding in an $(2n+2)$-dimensional Ricci-flat semi-Riemannian manifold. The sharpest result available for this type of embeddings, in the general setting, comes as a corollary of Greene's remarkable embedding theorems [R. Greene, Mem. Am. Math. Soc. 97, 1 (1970)], which guarantee the embedding of a compact $n$-dimensional semi-Riemannian manifold into an $n(n+5)$-dimensional semi-Euclidean space, thereby guaranteeing the embedding into a Ricci-flat space with the same dimension. The theorem presented here improves this corollary in $n^{2}+3n-2$ codimensions by replacing the Riemann-flat condition with the Ricci-flat one from the beginning. Finally, we will present a corollary of this theorem, which shows that a compact strip in an $n$-dimensional globally hyperbolic space-time can be embedded in a $(2n+2)$-dimensional Ricci-flat semi-Riemannian manifold.
Geometry in Scattering Amplitudes
Creators: name: Helset, Andreas
name: Jenkins, Elizabeth E.
name: Manohar, Aneesh V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We formulate the field-space geometry for an effective field theory of scalars and gauge bosons. Geometric invariants such as the field-space curvature enter in both scattering amplitudes and the renormalization group equations, with the scalar and gauge results unified in a single expression.
description: 7 pages. Updated references and corrected typo
Additional file 1: of Correction to: Association between inflammation and systolic blood pressure in RA compared to patients without RA
Creators: name: Yu, Zhi
name: Kim, Seoyoung
name: Vanni, Kathleen
name: Huang, Jie
name: Desai, Rishi
name: Murphy, Shawn
name: Solomon, Daniel
name: Liao, Katherine
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology

description: Figure S1. The relationship between C-reactive protein levels (CRP) and diastolic blood pressure (A), pulse pressure (B), and mean arterial pressure (C) with 95% confidence intervals, in the RA outpatient population and general population (NHANES). RA, rheumatoid arthritis; NHANES, National Health and Nutrition Examination Survey. (PDF 108 kb)
Benefits of a Mindfulness Mobile Application for Depressed College Students: Incremental Effects of Mobile App, Orientation, and Peer Supportive Accountability on Adherence and Well-being Outcomes
Creators: name: Conley, Colleen
name: Huguenel, Brynn
name: Hundert Gonzales, Carol
name: Silton, Rebecca
name: Duffecy, Jennifer
name: Kahrilas, Ian
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Clinical Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: app
subject: mental health
subject: mindfulness
subject: RCT
subject: technology

description: This registration was completed before analysis for this intervention outcomes paper.
Bouncing cosmological models in a functional form of F(R) gravity
Creators: name: Agrawal, A. S.
name: Mishra, S.
name: Tripathy, S. K.
name: Mishra, B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have investigated some bouncing cosmological models in an isotropic and homogeneous space time with the F(R) theory of gravity. Two functional forms of F(R) have been investigated with a bouncing scale factor. The dynamical parameters are derived and analysed along with the cosmographic parameters. The analysis in both the models show the occurrence of bouncing scenario. The violation of strong energy conditions in both models is also shown. In the stability point of view we have analysed the behaviour of F_R = dF/dR with respect to cosmic time and both the models exhibit stable behaviour.
description: accepted in Grav. Cosm
Improving Approximate Optimal Transport Distances using Quantization
Creators: name: Beugnot, Gaspard
name: Genevay, Aude
name: Greenewald, Kristjan
name: Solomon, Justin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Optimal transport (OT) is a popular tool in machine learning to compare probability measures geometrically, but it comes with substantial computational burden. Linear programming algorithms for computing OT distances scale cubically in the size of the input, making OT impractical in the large-sample regime. We introduce a practical algorithm, which relies on a quantization step, to estimate OT distances between measures given cheap sample access. We also provide a variant of our algorithm to improve the performance of approximate solvers, focusing on those for entropy-regularized transport. We give theoretical guarantees on the benefits of this quantization step and display experiments showing that it behaves well in practice, providing a practical approximation algorithm that can be used as a drop-in replacement for existing OT estimators.
description: Published in the proceedings of the Conference on Uncertainty in Artificial Intelligence 2021 (UAI)
Knowledge Distillation Circumvents Nonlinearity for Optical Convolutional Neural Networks
Creators: name: Xiang, Jinlin
name: Colburn, Shane
name: Majumdar, Arka
name: Shlizerman, Eli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Emerging Technologies (cs.ET)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In recent years, Convolutional Neural Networks (CNNs) have enabled ubiquitous image processing applications. As such, CNNs require fast runtime (forward propagation) to process high-resolution visual streams in real time. This is still a challenging task even with state-of-the-art graphics and tensor processing units. The bottleneck in computational efficiency primarily occurs in the convolutional layers. Performing operations in the Fourier domain is a promising way to accelerate forward propagation since it transforms convolutions into elementwise multiplications, which are considerably faster to compute for large kernels. Furthermore, such computation could be implemented using an optical 4f system with orders of magnitude faster operation. However, a major challenge in using this spectral approach, as well as in an optical implementation of CNNs, is the inclusion of a nonlinearity between each convolutional layer, without which CNN performance drops dramatically. Here, we propose a Spectral CNN Linear Counterpart (SCLC) network architecture and develop a Knowledge Distillation (KD) approach to circumvent the need for a nonlinearity and successfully train such networks. While the KD approach is known in machine learning as an effective process for network pruning, we adapt the approach to transfer the knowledge from a nonlinear network (teacher) to a linear counterpart (student). We show that the KD approach can achieve performance that easily surpasses the standard linear version of a CNN and could approach the performance of the nonlinear network. Our simulations show that the possibility of increasing the resolution of the input image allows our proposed 4f optical linear network to perform more efficiently than a nonlinear network with the same accuracy on two fundamental image processing tasks: (i) object classification and (ii) semantic segmentation.
Additional file 3: of Features of the organization of bread wheat chromosome 5BS based on physical mapping
Creators: name: Salina, Elena
name: Nesterov, Mikhail
name: Frenkel, Zeev
name: Kiseleva, Antonina
name: Timonova, Ekaterina
name: Magni, Federica
name: Vrána, Jan
name: Šafář, Jan
name: Šimková, Hana
name: Doležel, Jaroslav
name: Korol, Abraham
name: Sergeeva, Ekaterina
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: BAC clones screening. (DOCX 17 kb)
Unconventional order-disorder phase transition in improper ferroelectric hexagonal manganites
Creators: name: Skjærvø, Sandra H.
name: Meier, Quintin
name: Feygenson, Mikhail
name: Spaldin, Nicola A.
name: Billinge, Simon J. L.
name: Bozin, Emil S.
name: Selbach, Sverre M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The improper ferroelectricity in YMnO$_3$ and other related multiferroic hexagonal manganites are known to cause topologically protected ferroelectric domains that give rise to rich and diverse physical phenomena. The local structure and structural coherence across the ferroelectric transition, however, were previously not well understood. Here we reveal the evolution of the local structure with temperature in YMnO$_3$ using neutron total scattering techniques, and interpret them with the help of first-principles calculations. The results show that, at room temperature, the local and average structures are consistent with the established ferroelectric $P6_3cm$ symmetry. On heating, both local and average structural analyses show striking anomalies from $\sim 800$ K up to the Curie temperature consistent with increasing fluctuations of the order parameter angle. These fluctuations result in an unusual local symmetry lowering into a \textit{continuum of structures} on heating. This local symmetry breaking persists into the high-symmetry non-polar phase, constituting an unconventional type of order-disorder transition.
description: 10 pages, 5 figures
Comment on: "Nonlinear quantum effects in electromagnetic radiation of a vortex electron"
Creators: name: Karnieli, Aviv
name: Remez, Roei
name: Kaminer, Ido
name: Arie, Ady
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This comment on the Phys. Rev. A paper "Nonlinear quantum effects in electromagnetic radiation of a vortex electron" by Karlovets and Pupasov-Maximov [Phys. Rev. A 103, 12214 (2021)] addresses their criticism of the combined experimental and theoretical study "Observing the quantum wave nature of free electrons through spontaneous emission" by Remez et al, published in Phys. Rev. Lett. [Phys. Rev. Lett. 123, 060401 (2019)]. We show, by means of simple optical arguments as well as numerical simulations, that the criticism raised by Karlovets and Pupasov-Maximov regarding the experimental regime reported by Remez et al is false. Further, we discuss a necessary clarification for the theoretical derivations presented by Karlovets and Pupasov-Maximov, as they only hold for a certain experimental situation where the final state of the emitting electron is observed in coincidence with the emitted photon - which is not the common scenario in cathodoluminescence. Upon lifting the concerns regarding the experimental regime reported by Remez et al, and explicitly clarifying the electron post-selection, we believe that the paper by Karlovets and Pupasov-Maximov may constitute a valuable contribution to the problem of spontaneous emission by shaped electron wavefunctions, as it presents new expressions for the emission rates beyond the ubiquitous paraxial approximation.
How far can we go? On the options and limitations of innovative publishing for AHSS disciplines
Creators: name: Bargheer, Margo
Publisher: name: Zenodo
Year: 2020
Subjects: Digital Humanities; scholarly publishing; Open Access

description: This is a talk I gave at the APE conference 2020 https://www.ape2020.eu/ for the Session 6: Openness in Arts, Humanities and Social Sciences. I t aimed to highlight how new research practices in Arts, Humanities and Social Sciences (AHSS) such as Open Science and Digital Humanities impact publishing for these disciplines and what the usually smaller publishers can do. The session focussed on the situation that limited funds available for payment of APCs compared to STM areas, and that this has restricted the amount of engagement with open access in AHSS areas. The session was chaired by Matthew Cannon, Head of Open Research, Routledge (Taylor & Francis Group), Oxford; Dr. Erzsébet Tóth-Czifra, DARIAH-EU, Berlin talked on Supporting Open Humanities Researchers; Mark Zadrozny, Executive Publisher, Cambridge University Press, New York rounded up with a talk "Creating a Preprint Server for the Social Sciences".
description: Some of the pictures in my presentation are not CC-licensed. Sorry, therefore I can't issue a CC license for the entire talk.
Optimal constants for a non-local approximation of Sobolev norms and total variation
Creators: name: Antonucci, Clara
name: Gobbino, Massimo
name: Migliorini, Matteo
name: Picenni, Nicola
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 26B30, 46E35

description: We consider the family of non-local and non-convex functionals proposed and investigated by J. Bourgain, H. Brezis and H.-M. Nguyen in a series of papers of the last decade. It was known that this family of functionals Gamma-converges to a suitable multiple of the Sobolev norm or the total variation, depending on the summability exponent, but the exact constants and the structure of recovery families were still unknown, even in dimension one. We prove a Gamma-convergence result with explicit values of the constants in any space dimension. We also show the existence of recovery families consisting of smooth functions with compact support. The key point is reducing the problem first to dimension one, and then to a finite combinatorial rearrangement inequality.
description: 35 pages, 1 figure. In version 2 we added some references and we stated and proved the results of section 2 in a more general form, as needed in successive papers
Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material
Creators: name: Andolina, Gian Marcello
name: De Pasquale, Antonella
name: Pellegrino, Francesco Maria Dimitri
name: Torre, Iacopo
name: Koppens, Frank H. L.
name: Polini, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of quantum spin liquids and high-Tc superconductors, Amperean superconductivity has been recently proposed to occur at temperatures on the order of 1-20 K in two-dimensional, parabolic-band, electron gases embedded inside deep sub-wavelength optical cavities. In this work, we first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of graphene and then argue that this superconducting state cannot be achieved in the deep sub-wavelength regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than the current-current interactions which are responsible for Amperean pairing.
description: 25 pages. Replaced with a greatly modified version, with the addition of an entirely new Section. This new Section presents a Green's function approach to EEEIs that highlights the profound difference between planar optical cavities and sub-wavelength cavities
Boundary-Driven Twist States in Systems with Broken Spatial Inversion Symmetry
Creators: name: Hals, Kjetil M. D.
name: Everschor-Sitte, Karin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A full description of a magnetic sample includes a correct treatment of the boundary conditions (BCs). This is in particular important in thin film systems, where even bulk properties might be modified by the properties of the boundary of the sample. We study generic ferromagnets with broken spatial inversion symmetry and derive the general micromagnetic BCs of a system with Dzyaloshinskii-Moriya interaction (DMI). We demonstrate that the BCs require the full tensorial structure of the third-rank DMI tensor and not just the antisymmetric part, which is usually taken into account. Specifically, we study systems with $C_{\infty v}$ symmetry and explore the consequences of the DMI. Interestingly, we find that the DMI already in the simplest case of a ferromagnetic thin-film leads to a purely boundary-driven magnetic twist state at the edges of the sample. The twist state represents a new type of DMI-induced spin structure, which is completely independent of the internal DMI field. We estimate the size of the texture-induced magnetoresistance effect being in the range of that of domain walls.
description: 7 pages, 1 figure; added references, added updated affiliation
Energy conservation for 2D Euler with vorticity in $L(\log L)^α$
Creators: name: Ciampa, Gennaro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35 (Primary), 35Q31 (Secondary)

description: In these notes we discuss the conservation of the energy for weak solutions of the two-dimensional incompressible Euler equations. Weak solutions with vorticity in $L^\infty_t L^p_x$ with $p\geq 3/2$ are always conservative, while for less integrable vorticity the conservation of the energy may depend on the approximation method used to construct the solution. Here we prove that the canonical approximations introduced by DiPerna and Majda provide conservative solutions when the initial vorticity is in the class $L(\log L)^α$ with $α>1/2$.
description: arXiv admin note: text overlap with arXiv:1905.09720
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 072
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 072, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 072, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Time evolution and the Schrödinger equation on time dependent quantum graphs
Creators: name: Smilansky, Uzy
name: Sofer, Gilad
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The purpose of the present paper is to discuss the time dependent Schrödinger equation on a metric graph with time-dependent edge lengths, and the proper way to pose the problem so that the corresponding time evolution is unitary. We show that the well posedness of the Schrödinger equation can be guaranteed by replacing the standard Kirchhoff Laplacian with a magnetic Schrödinger operator with a harmonic potential. We then generalize the result to time dependent families of vertex conditions. We also apply the theory to show the existence of a geometric phase associated with a slowly changing quantum graph.
description: 16 pages, 3 figures
Algebraic Theory of Quantum Synchronization and Limit Cycles under Dissipation
Creators: name: Buca, Berislav
name: Booker, Cameron
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Synchronization is a phenomenon where interacting particles lock their motion and display non-trivial dynamics. Despite intense efforts studying synchronization in systems without clear classical limits, no comprehensive theory has been found. We develop such a general theory based on novel necessary and sufficient algebraic criteria for persistently oscillating eigenmodes (limit cycles) of time-independent quantum master equations. We show these eigenmodes must be quantum coherent and give an exact analytical solution for all such dynamics in terms of a dynamical symmetry algebra. Using our theory, we study both stable synchronization and metastable/transient synchronization. We use our theory to fully characterise spontaneous synchronization of autonomous systems. Moreover, we give compact algebraic criteria that may be used to prove absence of synchronization. We demonstrate synchronization in several systems relevant for various fermionic cold atom experiments.
description: Resubmission to SciPost. 58 pages, 8 figures. Comments are welcome
MOESM3 of Characterization and engineering of a dual-function diacylglycerol acyltransferase in the oleaginous marine diatom Phaeodactylum tricornutum
Creators: name: Yulin Cui
name: Jialin Zhao
name: Yinchu Wang
name: Qin, Song
name: Yandu Lu
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 3: Table S1. Primers used in this study. Table S2. The Fv/Fm of WT and PtWS/DGAToe P. tricornutum lines following nitrogen deprivation for fourteen days.
On the planar edge-length ratio of planar graphs
Creators: name: Borrazzo, Manuel
name: Frati, Fabrizio
Publisher: name: Journal of Computational Geometry
Year: 2020

description: The edge-length ratio of a straight-line drawing of a graph is the ratio between the lengths of the longest and of the shortest edge in the drawing. The planar edge-length ratio of a planar graph is the minimum edge-length ratio of any planar straight-line drawing of the graph. In this paper, we study the planar edge-length ratio of planar graphs. We prove that there exist $n$-vertex planar graphs whose planar edge-length ratio is in $\Omega(n)$; this bound is tight. We also prove upper bounds on the planar edge-length ratio of several families of planar graphs, including series-parallel graphs and bipartite planar graphs.
description: Journal of Computational Geometry, Vol. 11 No. 1 (2020)
Additional file 7: of Comparing miRNA structure of mirtrons and non-mirtrons
Creators: name: Titov, Igor
name: Vorozheykin, Pavel
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: The results of the stability test using MiRGeneDB database. (DOCX 95Â kb)
title: ADCO, Cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Cart. 34 (G 138), 22 folios, f. 0008
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP

description: Cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 34 (G 138), 22 folios, f. 0008, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Saint-Etienne de Dijon (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 34 (G 138), 22 folios, f. 0008, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Additional file 6: of COL6A3 polymorphisms were associated with lung cancer risk in a Chinese population
Creators: name: Duan, Ying
name: Liu, Gaowen
name: Sun, Yao
name: Wu, Jiamin
name: Xiong, Zichao
name: Jin, Tianbo
name: Chen, Mingwei
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Table S3. Significant variants in COL6A3 associated with the stages of lung cancer patients. (DOCX 25 kb)
Extrapolation to nonequilibrium from coarse grained response theory
Creators: name: Basu, Urna
name: Helden, Laurent
name: Krüger, Matthias
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Nonlinear response theory, in contrast to linear cases, involves (dynamical) details, and this makes application to many body systems challenging. From the microscopic starting point we obtain an exact response theory for a small number of coarse grained degrees of freedom. With it, an extrapolation scheme uses near-equilibrium measurements to predict far from equilibrium properties (here, second order responses). Because it does not involve system details, this approach can be applied to many body systems. It is illustrated in a four state model and in the near critical Ising model.
description: Accepted for publication in Phys. Rev. Lett
Robust Monitoring of Time Series with Application to Fraud Detection
Creators: name: Rousseeuw, Peter J.
name: Perrotta, Domenico
name: Riani, Marco
name: Hubert, Mia
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Time series often contain outliers and level shifts or structural changes. These unexpected events are of the utmost importance in fraud detection, as they may pinpoint suspicious transactions. The presence of such unusual events can easily mislead conventional time series analysis and yield erroneous conclusions. In this paper we provide a unified framework for detecting outliers and level shifts in short time series that may have a seasonal pattern. The approach combines ideas from the FastLTS algorithm for robust regression with alternating least squares. The double wedge plot is proposed, a graphical display which indicates outliers and potential level shifts. The methodology was developed to detect potential fraud cases in time series of imports into the European Union, and is illustrated on two such series.
Optimal morphs of planar orthogonal drawings
Creators: name: Van Goethem, Arthur
name: Speckmann, Bettina
name: Verbeek, Kevin
Publisher: name: Journal of Computational Geometry
Year: 2022

description: We describe an algorithm that morphs between two planar orthogonal drawings $\Gamma_I$ and $\Gamma_O$ of a graph $G$, while preserving planarity and orthogonality. Necessarily drawings $\Gamma_I$ and $\Gamma_O$ must be equivalent, that is, there exists a homeomorphism of the plane that transforms $\Gamma_I$ into $\Gamma_O$. Our morph uses a linear number of linear morphs (linear interpolations between two drawings) and preserves linear complexity throughout the process, thereby answering an open question from Biedl~\etal (ACM Transactions on Algorithms, 2013). Our algorithm first \emph{unifies} the two drawings to ensure an equal number of (virtual) \emph{bends} on each edge. We then interpret bends as vertices which form obstacles for so-called \emph{wires}: horizontal and vertical lines separating the vertices of $\Gamma_O$. We can find corresponding wires in $\Gamma_I$ that share topological properties with the wires in $\Gamma_O$. The structural difference between the two drawings can be captured by the \emph{spirality} $s$ of the wires in $\Gamma_I$, which guides our morph from $\Gamma_I$ to $\Gamma_O$. We prove that $s=O(n)$ and that $s+1$ linear morphs are always sufficient to morph between two planar orthogonal drawings, even for disconnected graphs.
description: Journal of Computational Geometry, Vol. 13 No. 1 (2022)