cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum criticality in photorefractive optics: vortices in laser beams and antiferromagnets
Creators: name: Čubrović, Mihailo
name: Petrović, Milan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study vortex patterns in a prototype nonlinear optical system: counterpropagating laser beams in a photorefractive crystal, with or without the background photonic lattice. The vortices are effectively planar and described by the winding number and the "flavor" index, stemming from the fact that we have two parallel beams propagating in opposite directions. The problem is amenable to the methods of statistical field theory and generalizes the Berezinsky-Kosterlitz-Thouless transition of the XY model to the "two-flavor" case. In addition to the familiar conductor and insulator phases, we also have the perfect conductor (vortex proliferation in both beams/"flavors") and the frustrated insulator (energy costs of vortex proliferation and vortex annihilation balance each other). In the presence of disorder in the background lattice, a novel phase appears which shows long-range correlations and absence of long-range order, thus being analogous to spin glasses. An important benefit of this approach is that qualitative behavior of patterns can be known without intensive numerical work over large areas of the parameter space. More generally, we would like to draw attention to connections between the (classical) pattern-forming systems in photorefractive optics and the methods of (quantum) condensed matter and field theory: on one hand, we use the field-theoretical methods (renormalization group, replica formalism) to analyze the patterns; on the other hand, the observed phases are analogous to those seen in magnetic systems, and make photorefractive optics a fruitful testing ground for condensed matter systems. As an example, we map our system to a doped $O(3)$ antiferromagnet with $\mathbb{Z}_2$ defects, which has the same structure of the phase diagram.
description: 47 pages, 23 figures; this version: substantially revised; added explicit proofs for the existence of equilibrium, the influence of boundary conditions and description of numerics; extensive calculations put to appendices
Spin susceptibility of charge ordered YBa2Cu3Oy across the upper critical field
Creators: name: Zhou, R.
name: Hirata, M.
name: Wu, T.
name: Vinograd, I.
name: Mayaffre, H.
name: Krämer, S.
name: Reyes, A. P.
name: Kuhns, P. L.
name: Liang, R.
name: Hardy, W. N.
name: Bonn, D. A.
name: Julien, M. -H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The value of the upper critical field Hc2, a fundamental characteristic of the superconducting state, has been subject to strong controversy in high-Tc copper-oxides. Since the issue has been tackled almost exclusively by macroscopic techniques so far, there is a clear need for local-probe measurements. Here, we use 17O NMR to measure the spin susceptibility $χ_{spin}$ of the CuO2 planes at low temperature in charge ordered YBa2Cu3Oy. We find that $χ_{spin}$ increases (most likely linearly) with magnetic field H and saturates above field values ranging from 20 to 40 T. This result is consistent with Hc2 values claimed by G. Grissonnanche et al. [Nat. Commun. 5, 3280 (2014)] and with the interpretation that the charge-density-wave (CDW) reduces Hc2 in underdoped YBa2Cu3Oy. Furthermore, the absence of marked deviation in $χ_{spin}(H)$ at the onset of long-range CDW order indicates that this Hc2 reduction and the Fermi-surface reconstruction are primarily rooted in the short-range CDW order already present in zero field, not in the field-induced long-range CDWorder. Above Hc2, the relatively low values of $χ_{spin}$ at T=2 K show that the pseudogap is a ground-state property, independent of the superconducting gap.
description: To appear
Preparation, Characterizations of TS-1 Zeolite: An Effective Solid Acid Catalyst for the Synthesis of 1, 3, 5-Triaryl-2-Pyrazolins
Creators: name: Gadekar, Sachin P.
name: Pawar, Ganesh T.
name: Rameshwar R. Magar
name: Machhindra K. Lande
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A clean and efficient method has been developed for the synthesis 1, 3, 5-triaryl-2-pyrazoline derivatives via cyclocondensation of chalcone and phenyl hydrazine using TS-1 as solid heterogeneous reusable catalyst. The catalyst was synthesized by the hydrothermal method under autogenous pressure. The prepared catalyst was characterized by Powder-X-ray diffraction (XRD), Fourier-transform infrared spectroscopy spectroscopy, scanning electron microscope-Energy dispersive spectroscopy (EDAX) and Brunauer–Emmett–Teller surface area analysis. The present method offers significant advantages over the reported methods like easy separation of catalyst, simple work-up procedure, and excellent yield of desired products. Furthermore, catalyst could be reused without significant loss in activity.
title: ADCO, Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Cart. 22 (G 126), 110 folios, f. 0025
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: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 22 (G 126), 110 folios, f. 0025, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 22 (G 126), 110 folios, f. 0025, 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
An Itô type formula for the additive stochastic heat equation
Creators: name: Bellingeri, Carlo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H15

description: We use the theory of regularity structures to develop an Itô formula for $u$, the solution of the one dimensional stochastic heat equation driven by space-time white noise with periodic boundary conditions. In particular for any smooth enough function $φ$ we can express the random distribution $(\partial_t-\partial_{xx})φ(u)$ and the random field $φ(u)$ in terms of the reconstruction of some modelled distributions. The resulting objects are then identified with some classical constructions of stochastic calculus.
Cyclic hexadepsipeptides from the fermentation of Fusarium sp. DCJ-A and their cytotoxic activities
Creators: name: Yang, Jia-Mei
name: Liao, Yong-Jian
name: Chen, Ning
name: Huang, Lei
name: Zhang, Li-Zhi
name: Du, Gang
name: Zhou, Min
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Beauvercin H (1), a new cyclic hexadepsipeptide, and two known ones (2 and 3) were isolated from the EtOH extract of the solid culture of Fusarium sp. Their structures were elucidated by spectroscopic analysis, including extensive 1D and 2D NMR techniques, as well as comparison with literature values. Additionally, compounds 1–3 were tested for their cytotoxic activities. The results showed that all isolated compounds exhibited cytotoxic activities against five human cancer cell lines with IC50 values ranging from 1.379 to 13.12 μM.
Development and Field Application of a Model Predicting Effects of Episodic Hypoxia on Short-Term Growth of Spot
Creators: name: Campbell, Lindsay A.
name: Rice, James A.
Publisher: name: Taylor & Francis
Year: 2017
Subjects: 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: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry

description: In North Carolina and elsewhere, there is concern that excessive nutrient loading and resulting hypoxic conditions in coastal ecosystems are adversely affecting the native fauna, but quantifying the effects on fish can be difficult. Hypoxia may reduce fish growth via direct exposure or indirectly (e.g., cost of low-oxygen avoidance, reduced food availability, and density-dependent effects in oxygenated refuges). Given the fine spatial and temporal scale of oxygen dynamics in estuarine habitats, evaluating the impacts of hypoxia on fish growth requires short-term growth indicators that integrate the effects of rapidly changing environmental conditions. To address this need, we experimentally determined the sensitivity and response time of a suite of bioindicators of recent growth (RNA:DNA ratio and RNA concentration in muscle tissue; insulin-like growth factor-I messenger RNA expression in the liver; hepatosomatic index; and Fulton’s condition factor K) to changes in the specific growth rate of juvenile Spot Leiostomus xanthurus. A model based on multiple bioindicators was better at estimating growth rate than models based on single indicators. We used this model to estimate recent growth rates of juvenile Spot collected from the Neuse River estuary and related them to recent dissolved oxygen (DO) conditions. Estimated growth rates of Spot collected after a week of good DO conditions were almost twice those of Spot collected after a week of poor DO conditions. Using these results and DO data from the Neuse River estuary in 2007–2010, we estimated that hypoxia dynamics reduced Spot growth over the summer by 6–18% in these years relative to growth under constant good DO conditions. This approach can be used to evaluate impacts of observed or modeled scenarios of water quality dynamics on growth of juvenile Spot and serves as a template for development of predictive growth models for other species. Received July 18, 2016; accepted July 27, 2017
Line of sight analysis for urban mobile applications: a photogrammetric approach
Creators: name: M. Sreedhar
name: B. Narender
name: S. Muralikrishnan
Publisher: name: Monash University
Year: 2017
Subjects: subject: Geography
subject: 90903 Geospatial Information Systems
subject: FOS: Environmental engineering

description: Although inter visibility analysis between a GPS receiver and visible satellites is crucial for any real-time route navigation, traditional, mission-planning software does not incorporate it – they simply assume that the earth is flat. This paper seeks to correct the situation by outlining an advanced, semi-global matching technique which derives a Digital Surface Model (DSM), depicting the topography model of the earth surface for any study area. Our approach uses a GIS, combined with a freely available Global Navigation Satellite System (GNSS), to accurately predict pseudo satellite locations before building three-dimensional models of buildings from their footprints. We exploit high-resolution satellite data (Cartosat-1 and Geoeye-1) along with high-density elevation information, and we ultimately reduce the need for full-scale surveys and so minimize costs and time. Moreover, our combining of 3D models with GPS-derived, ephemeris data pertaining to densely built-up areas constitutes a valuable input for real time, mobile applications like car navigation systems, personal navigation, fleet tracking, asset tracking and general, location-based services.
The equivariant spectral flow and bifurcation of periodic solutions of Hamiltonian systems
Creators: name: Izydorek, Marek
name: Janczewska, Joanna
name: Waterstraat, Nils
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 515

description: We define a spectral flow for paths of selfadjoint Fredholm operators that are equivariant under the orthogonal action of a compact Lie group as an element of the representation ring of the latter. This -equivariant spectral flow shares all common properties of the integer valued classical spectral flow, and it can be non-trivial even if the classical spectral flow vanishes. Our main theorem uses the -equivariant spectral flow to study bifurcation of periodic solutions for autonomous Hamiltonian systems with symmetries.
LINGUOCULTURAL FEATURES OF PROPER NOUNS IN ENGLISH AND UZBEK
Creators: name: Meliqo'ziyeva, Gulshoda
Publisher: name: Zenodo
Year: 2024

description: Naming  a  single  entity  is  one  of  the  basic  speed,  acts,  included  by    the  class  of  declaratives,  alongside    declaring    war,    dismissing    and    be questing.  People  and  peaces,  pets  and  hurricanes,  and  festivities,  institution  and  commercial  products,  works  of  art  and  shops  are  given a  name.  Naming  serves  to  highlight  entities  that  play  a  role  in  people’s  daily  life,  and  to  establish  and  maintain  an  individually  in  a  society. Objects   of  analysis   of  onomastic    people’s  names,  proper  nouns  have  been  investigated  by  philosophers,  logicians,    anthropologists    and  psychologists,  but  only  sporadically  by  linguists:  e.g.    with    different    approaches    and    concerns,  Sloat[1,26-30] , Gary – Prieur [2, 47-53].
Data File 8: Methods and Materials
Creators: name: Kiss, Daniel
name: Baez, William D.
name: Bundschuh, Ralf
name: Huebner, Kay
name: Schoenberg, Daniel R.
Publisher: name: figshare
Year: 2018
Subjects: Cancer
Molecular Biology

description: A detailed record of the methods and materials employed in the associated experiments with this study.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Cart. 193 (11 H 78), f. 0166r
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/2012
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: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0166r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0166r, 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
title: Le Damoiseau de don Henri-le-dolent, traduit de l'espagnol de Larra, dit Figaro, par Marcel Mars... Texte imprimé
Creators: name: de Larra y Sanchez de Castro, Mariano José
name: Mars, Marcel
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: In-18, 383 p
description: Source: Bibliothèque patrimoniale Villon (Rouen), fonds Leber,, m-10486 O-2460-a
The New Alchemy Infographic - Helping Scientists Increase the Impact of Their Own Work
Creators: name: Williams, Antony
name: Ekins, Sean
name: Peck, Lou
Publisher: name: figshare
Year: 2018
Subjects: Uncategorized

description: This infographic represents the work reported in the paper "The new alchemy: Online networking, data sharing and research activity distribution tools for scientists".
The abstract for the paper is: There is an abundance of free online tools accessible to scientists and others that can be used for online networking, data sharing and measuring research impact. Despite this, few scientists know how these tools can be used or fail to take advantage of using them as an integrated pipeline to raise awareness of their research outputs. In this article, the authors describe their experiences with these tools and how they can make best use of them to make their scientific research generally more accessible, extending its reach beyond their own direct networks, and communicating their ideas to new audiences. These efforts have the potential to drive science by sparking new collaborations and interdisciplinary research projects that may lead to future publications, funding and commercial opportunities. The intent of this article is to: describe some of these freely accessible networking tools and affiliated products; demonstrate from our own experiences how they can be utilized effectively; and, inspire their adoption by new users for the benefit of science.
Spontaneous isotropy breaking for vortices in nonlinear left-handed metamaterials
Creators: name: Kukolj, Trivko
name: Čubrović, Mihailo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore numerically and analytically the pattern formation and symmetry breaking of beams propagating through left-handed (negative) nonlinear metamaterials. When the input beam is a vortex with topological charge (winding number) $Q$, the initially circular (isotropic) beam acquires the symmetry of a polygon with $Q$, $2Q$ or $3Q$ sides, depending on the details of the response functions of the material. Within an effective field-theory model, this phenomenon turns out to be a case of spontaneous dynamical symmetry breaking described by a Landau-Ginzburg functional. Complex nonlinear dependence of the magnetic permittivity on the magnetic field of the beam plays a central role, as it introduces branch cuts in the mean-field solution, and permutations among different branches give rise to discrete symmetries of the patterns. By considering loop corrections in the effective Landau-Ginzburg field theory we obtain reasonably accurate predictions of the numerical results.
description: 19 pages, 7 figures; this version: corrected typos, added discussion on the role of magnetic field and on experimental verification; journal reference added
LA SEGURIDAD INFORMATICA UNA PERSPECTIVA LEGAL EN MEXICO
Creators: name: JESUS ANTONIO ALVAREZ CEDILLO
name: 0000-0003-0823-4621
Publisher: name: figshare
Year: 2017
Subjects: subject: 80303 Computer System Security
subject: FOS: Computer and information sciences

description: En el presente trabajo detallare la seguridad informática es el tema de la actualidad ya que se encuentra muy ameno en empresas, instituciones, redes sociales, etc. Ya que se deben de proteger los datos para alcanzar la privacidad de cada uno de nosotros como usuarios, esto se debe a las transacciones que se presentan los consumidores en el internet. Por ello existen ciertas empresas, instituciones y organizaciones que brindan el servicio de seguridad informática para no caer en incidentes en sitios de la web que usan para realizar ataques, los cuales se encargan de encriptar información por la red. Existen ciertas normas y leyes que se han postulado para castigar cualquier tipo de delito informático.
A Black-box Attack on Neural Networks Based on Swarm Evolutionary Algorithm
Creators: name: Liu, Xiaolei
name: Luo, Yuheng
name: Zhang, Xiaosong
name: Zhu, Qingxin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Neural networks play an increasingly important role in the field of machine learning and are included in many applications in society. Unfortunately, neural networks suffer from adversarial samples generated to attack them. However, most of the generation approaches either assume that the attacker has full knowledge of the neural network model or are limited by the type of attacked model. In this paper, we propose a new approach that generates a black-box attack to neural networks based on the swarm evolutionary algorithm. Benefiting from the improvements in the technology and theoretical characteristics of evolutionary algorithms, our approach has the advantages of effectiveness, black-box attack, generality, and randomness. Our experimental results show that both the MNIST images and the CIFAR-10 images can be perturbed to successful generate a black-box attack with 100\% probability on average. In addition, the proposed attack, which is successful on distilled neural networks with almost 100\% probability, is resistant to defensive distillation. The experimental results also indicate that the robustness of the artificial intelligence algorithm is related to the complexity of the model and the data set. In addition, we find that the adversarial samples to some extent reproduce the characteristics of the sample data learned by the neural network model.
Weighted-Sampling Audio Adversarial Example Attack
Creators: name: Liu, Xiaolei
name: Zhang, Xiaosong
name: Wan, Kun
name: Zhu, Qingxin
name: Ding, Yufei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recent studies have highlighted audio adversarial examples as a ubiquitous threat to state-of-the-art automatic speech recognition systems. Thorough studies on how to effectively generate adversarial examples are essential to prevent potential attacks. Despite many research on this, the efficiency and the robustness of existing works are not yet satisfactory. In this paper, we propose~\textit{weighted-sampling audio adversarial examples}, focusing on the numbers and the weights of distortion to reinforce the attack. Further, we apply a denoising method in the loss function to make the adversarial attack more imperceptible. Experiments show that our method is the first in the field to generate audio adversarial examples with low noise and high audio robustness at the minute time-consuming level.
description: https://aaai.org/Papers/AAAI/2020GB/AAAI-LiuXL.9260.pdf
High-harmonic generation in Su-Schrieffer-Heeger chains
Creators: name: Jürß, Hannah
name: Bauer, Dieter
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Su-Schrieffer-Heeger (SSH) chains are the simplest model systems that display topological edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an external laser field of a frequency much smaller than the band gap. We find huge differences between the harmonic yield for the two topological phases, similar to recent results obtained with more demanding time-dependent density functional calculations [D. Bauer, K.K. Hansen, Phys. Rev. Lett. 120, 177401 (2018)]. This shows that the tight-binding SSH model captures the essential topological aspects of the laser-chain interaction (while higher harmonics involving higher bands or screening in the metal phase are absent). We study the robustness of the topological difference with respect to disorder, a continuous phase transition in position space, and on-site potentials. Further, we address the question whether the edges need to be illuminated by the laser for the huge difference in the harmonic spectra to be present.
description: 12 pages, 12 figures, RevTeX4
title: ADCO, Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Cart. 177 (11 H 289), 197 folios, f. 0171
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/2015
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: LaMOP
subject: cartulaire

description: Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0171, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0171, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
On compact affine quaternionic curves and surfaces
Creators: name: Gentili, Graziano
name: Gori, Anna
name: Sarfatti, Giulia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30G35, 53C15

description: This paper is devoted to the study of affine quaternionic manifolds and to a possible classification of all compact affine quaternionic curves and surfaces. It is established that on an affine quaternionic manifold there is one and only one affine quaternionic structure. A direct result, based on the celebrated Kodaira Theorem that studies compact complex manifolds in complex dimension 2, states that the only compact affine quaternionic curves are the quaternionic tori and the primary Hopf surface S^3 x S^1. As for compact affine quaternionic surfaces, we restrict to the complete ones: the study of their fundamental groups, together with the inspection of all nilpotent hypercomplex simply connected 8-dimensional Lie Groups, identifies a path towards their classification.
description: 20 pages, accepted for publication in The Journal of Geometric Analysis
Stages of sedimentary infilling in a hypertidal bay using a combination of sedimentological, morphological and dynamic criteria (Bay of Somme, France)
Creators: name: Michel, Charlotte
name: Bot, Sophie Le
name: Druine, Flavie
name: Costa, Stéphane
name: Levoy, Franck
name: Dubrulle-Brunaud, Carole
name: Lafite, Robert
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: In the context of rising sea level, many estuaries and bays show an overall trend to sedimentary infilling. Among these coastal environments, the Bay of Somme is a hypertidal tide and wave-dominated estuary, filled in by marine sands, with a superficy of 70 km2. This study proposes a spatial zonation of the intertidal area of the bay based on the combination of information on sediments, seabed morphology and dynamics. Data come from a surficial sediment sampling campaign and six airborne LiDAR topographic surveys, acquired over the period 2011–2013, providing information on grain size, carbonate content, bedform occurrence and seabed dynamics. The Main Map shows the morpho-sedimentary and -dynamic zonation used as a basis to describe infilling stages in the bay.
Singular paths spaces and applications
Creators: name: Bellingeri, Carlo
name: Friz, Peter K.
name: Gerencsér, Máté
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60L20, 60L30, 60L90

description: Motivated by recent applications in rough volatility and regularity structures, notably the notion of singular modelled distribution, we study paths, rough paths and related objects with a quantified singularity at zero. In a pure path setting this allows us to leverage on existing SLE Besov estimates to see that SLE traces takes values in a singular Hölder space, which quantifies a well-known boundary effect in the regime $κ< 1$. We then consider the integration theory against singular rough paths and some extensions thereof. This gives a method to reconcile, from a regularity structure point of view, different singular kernels used to construct (fractional) rough volatility models and an effective reduction to the stationary case which is crucial to apply general renormalisation methods.
title: Etude de la maturité bilingue dans le canton de Vaud
title: enjeux, outils d’évaluation et niveaux de compétence
titleType: Subtitle
title: Etude de la maturité bilingue dans le canton de Vaud
titleType: AlternativeTitle
Creators: name: Lys, Irene
name: Gieruc, Gabriella
Publisher: name: Unité de recherche pour le pilotage des systèmes pédagogiques
Year: 2005

description: Contient : Etude de la maturité bilingue dans le canton de Vaud (85 p.) ; Analyse des compétences linguistiques (118 p.)
Birkhoff-James orthogonality and applications : A survey
Creators: name: Grover, Priyanka
name: Singla, Sushil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 15A60, 41A50, 46B20, 46L05, 46L08, 46G05, 47B47

description: In the last few decades, the concept of Birkhoff-James orthogonality has been used in several applications. In this survey article, the results known on the necessary and sufficient conditions for Birkhoff-James orthogonality in certain Banach spaces are mentioned. Their applications in studying the geometry of normed spaces are given. The connections between this concept of orthogonality, and the Gateaux derivative and the subdifferential set of the norm function are provided. Several interesting distance formulas can be obtained using the characterizations of Birkhoff-James orthogonality, which are also mentioned. In the end, some new results are obtained.
description: In Equation (4.1), the factor of 2 is misplaced and it should be on the left-hand side of the equation
title: Les compétences sociales et leur place dans la formation
title: résultats d'une enquête auprès des élèves, apprentis et gymnasiens vaudois ainsi que de leurs enseignants
titleType: Subtitle
title: Les compétences sociales et leur place dans la formation
titleType: AlternativeTitle
Creators: name: Abbet, Jean-Pierre
name: Moreau, Jean
Publisher: name: Unité de recherche pour le pilotage des systèmes pédagogiques
Year: 2012

description: Contient : 1re partie : introduction, problématique et moyens d'investigation (48 p.) ; IIe partie : résultats (76 p.) ; Compétences sociales selon l'environnement de formation (104 p.) ; IIIe partie : synthèse, conclusion et recommandations (78 p.)
Helicity flip of high-harmonic photons in Haldane nanoribbons
Creators: name: Jürß, Hannah
name: Bauer, Dieter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent studies in high-harmonic spectroscopy of condensed matter mainly focused on the bulk of the system under consideration. In this work, we investigate the response of thin, hexagonal nanoribbons to an intense laser pulse that is linearly polarized along the ribbon. Such nanoribbons are prime examples of two-dimensional systems that are bulk-like in one direction and finite in the other direction. Despite the atomically thin scale in the direction perpendicular to the linearly polarized driving laser field, the emitted harmonics are elliptically polarized if an alternating onsite potential and Haldane hopping is taken into account. For given hoppings, we find a sudden change of the helicity for a certain harmonic order. The origin of this flip is traced back to phase differences between the components of Bloch states.
description: 9 pages, 10 Figures, RevTeX
Tracking Passengers and Baggage Items Using Multiple Overhead Cameras at Security Checkpoints
Creators: name: Siddique, Abubakar
name: Medeiros, Henry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We introduce a novel framework to track multiple objects in overhead camera videos for airport checkpoint security scenarios where targets correspond to passengers and their baggage items. We propose a self-supervised learning (SSL) technique to provide the model information about instance segmentation uncertainty from overhead images. Our SSL approach improves object detection by employing a test-time data augmentation and a regression-based, rotation-invariant pseudo-label refinement technique. Our pseudo-label generation method provides multiple geometrically transformed images as inputs to a convolutional neural network (CNN), regresses the augmented detections generated by the network to reduce localization errors, and then clusters them using the mean-shift algorithm. The self-supervised detector model is used in a single-camera tracking algorithm to generate temporal identifiers for the targets. Our method also incorporates a multiview trajectory association mechanism to maintain consistent temporal identifiers as passengers travel across camera views. An evaluation of detection, tracking, and association performances on videos obtained from multiple overhead cameras in a realistic airport checkpoint environment demonstrates the effectiveness of the proposed approach. Our results show that self-supervision improves object detection accuracy by up to 42% without increasing the inference time of the model. Our multicamera association method achieves up to 89% multiobject tracking accuracy with an average computation time of less than 15 ms.
description: 16 pages, 16 figures
Intense-laser driven electron dynamics and high-harmonic generation in solids including topological effects
Creators: name: Moos, Daniel
name: Jürß, Hannah
name: Bauer, Dieter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A theory for laser-driven electron dynamics and high-harmonic generation in bulk solids with two lattice sites per unit cell of arbitrary dimension is formulated. In tight-binding approximation, such solids can be described by $2\times 2$ Bloch-Hamiltonians. Our theory is able to fully capture topological effects in high-harmonic generation by such systems because no simplifications beyond tight-binding, dipole approximation, and negligible depletion of the valence band are made. An explicit, analytical expression for the electron velocity is given. Exemplarily, the theory is applied to the Su-Schrieffer-Heeger chain and the Haldane model in strong laser fields.
description: 14 pages, 6 figures, RevTeX
Quasi-geometric rough paths and rough change of variable formula
Creators: name: Bellingeri, Carlo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60L20, 60L70

description: Using some basic notions from the theory of Hopf algebras and quasi-shuffle algebras, we introduce rigorously a new family of rough paths: the quasi-geometric rough paths. We discuss their main properties. In particular, we will relate them with iterated Brownian integrals and the concept of "simple bracket extension", developed in the PhD thesis of David Kelly. As a consequence of these results, we have a sufficient criterion to show for any $γ\in (0,1)$ and any sufficiently smooth function $φ\colon \mathbb{R}^d\to \mathbb{R}$ a rough change of variable formula on any $γ$-Hölder continuous path $x\colon [0, T]\to \mathbb{R}^d$, i.e. an explicit expression of $φ(x_t)$ in terms of rough integrals.
Bayesian Nonparametric Dimensionality Reduction of Categorical Data for Predicting Severity of COVID-19 in Pregnant Women
Creators: name: Ajirak, Marzieh
name: Heiselman, Cassandra
name: Fuchs, Anna
name: Heiligenstein, Mia
name: Herrera, Kimberly
name: Garretto, Diana
name: Djuric, Petar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The coronavirus disease (COVID-19) has rapidly spread throughout the world and while pregnant women present the same adverse outcome rates, they are underrepresented in clinical research. We collected clinical data of 155 test-positive COVID-19 pregnant women at Stony Brook University Hospital. Many of these collected data are of multivariate categorical type, where the number of possible outcomes grows exponentially as the dimension of data increases. We modeled the data within the unsupervised Bayesian framework and mapped them into a lower-dimensional space using latent Gaussian processes. The latent features in the lower dimensional space were further used for predicting if a pregnant woman would be admitted to a hospital due to COVID-19 or would remain with mild symptoms. We compared the prediction accuracy with the dummy/one-hot encoding of categorical data and found that the latent Gaussian process had better accuracy.
Laccase SilA activity
Creators: name: Moya, Alba Blánquez
Publisher: name: figshare
Year: 2017
Subjects: subject: 60107 Enzymes
subject: FOS: Biological sciences
subject: 60503 Microbial Genetics
subject: Microbiology

description: Laccase activity determined from Streptomyces ipomoeae wild-type, mutant SilA-, recovered mutant (SilA- + pEM4T-sipo1000) and over-expressed wild-type.
Direct measurement of aerosol glass fiber alignment in a DC electric field
Creators: name: Ku, Bon Ki
name: Deye, Gregory
name: Turkevich, Leonid A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: We report non-conducting aerosol fiber (i.e., glass fiber) alignment in a DC electric field. Direct observation of fiber orientation state is demonstrated and quantitative analysis of fiber alignment is made using phase contrast microscopy in four different conditions: (i) dry air and naturally charged fibers, (ii) humid and naturally charged, (iii) humid and neutralized (Boltzmann charge distribution), and (iv) humid and neutralized with an electrostatic precipitator upstream electrodes (i.e., non-charged). The glass fiber aerosols generated by a vortex shaking method were conditioned using a Po-210 neutralizer or humidifier and were provided into a test unit where cylindrical or parallel plate electrodes are used and high voltage is applied to them. Fibers were collected on a filter immediately downstream from the electrodes and their images were taken through an optical microscope to visualize the fiber orientation and measure the alignment angles and lengths of the fibers. The results showed that under all four conditions tested, airborne glass fibers could be aligned to the electric field with different alignment quality, indicating that the glass fibers can be polarized in a steady electric field. In humid air, the fiber alignment along the field direction was observed to be much better and the number of uniform background particles (i.e., randomly oriented fibers) in angular distributions is smaller than that in dry air. Also, it was found that charged fibers in humid air could be better aligned with negligible uniform background than neutralized and non-charged fibers. Possible mechanisms about humidity and charge effects on enhanced fiber alignment are discussed to support the observations. The results indicate that the enhancement of alignment in an electric field would be possible in humid air for other non-conducting fibrous particles having surface chemistry similar to glass fibers.
House dust mite-induced endoplasmic reticulum stress mediates MUC5AC hypersecretion via TBK1 in airway epithelium
Creators: name: Deng, Jun
name: Tang, Hongmei
name: Zhang, Yun
name: Yuan, Xiefang
name: Ma, Ning
name: Hu, Hang
name: Wang, Xiaoyun
name: Liu, Chunfeng
name: Xu, Guofeng
name: Li, Yuejiao
name: Wang, Songping
name: Guo, Linlin
name: Wang, Xing
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health

description: Purpose: Endoplasmic reticulum (ER) stress regulates mucus hypersecretion, and may activate downstream factors via TBK1 signaling to induce gene expression. However, it remains unclear whether ER stress promotes airway mucus secretion through the TBK1 pathway. We aimed to investigate the role of the TBK1 pathway in the regulation of MUC5AC expression in a mouse model of house dust mite (HDM)-induced allergic asthma. Materials and Methods: Mice with HDM-induced asthma and human bronchial epithelial BEAS-2B cells were treated with amlexanox, an anti-allergy drug (25 μM), or 4-PBA (10 mM). Tissue and cell samples were collected. Tissue samples were stained with hematoxylin and eosin (H&E) or periodic acid Schiff (PAS) to evaluate pathology. Protein expression was analyzed by western blotting and immunofluorescence. Results: Mice exposed to HDM presented ER stress and hypersecretion of mucus Muc5ac from airway epithelial cells (p < 0.001). Similar results were observed in BEAS-2B cells following exposure to HDM. Both in vivo and in vitro studies revealed that HDM-induced ER stress induced MUC5AC overexpression via TBK1 signaling. Amlexanox and 4-PBA markedly reduced mucus production and weakened the TBK1 signal, which mediates MUC5AC hypersecretion. Conclusion: TBK1 plays a pivotal role in HDM-induced ER stress, leading to overproduction of MUC5AC in the asthmatic airway epithelium. The overproduction of MUC5AC can be significantly decreased by inhibiting TBK1 or ER stress using 4-PBA. These findings highlight potential target-specific therapies for patients with chronic allergic asthma.
Additional file 1 of Goal-directed therapy based on rScO2 monitoring in elderly patients with one-lung ventilation: a randomized trial on perioperative inflammation and postoperative delirium
Creators: name: Wang, Jing-yu
name: Li, Ming
name: Wang, Pei
name: Fang, Ping
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 1: Riker Sedation-Agitation Scale
High-order harmonic generation in hexagonal nanoribbons
Creators: name: Jürß, Hannah
name: Bauer, Dieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The generation of high-order harmonics in finite, hexagonal nanoribbons is simulated. Ribbons with armchair and zig-zag edges are investigated by using a tight-binding approach with only nearest neighbor hopping. By turning an alternating on-site potential off or on, the system describes for example graphene or hexagonal boron nitride, respectively. The incoming laser pulse is linearly polarized along the ribbons. The emitted light has a polarization component parallel to the polarization of the incoming field. The presence or absence of a polarization component perpendicular to the polarization of the incoming field can be explained by the symmetry of the ribbons. Characteristic features in the harmonic spectra for the finite ribbons are analyzed with the help of the band structure for the corresponding periodic systems.
description: 12 pages, 6 figures
Direct measurement of aerosol glass fiber alignment in a DC electric field
Creators: name: Ku, Bon Ki
name: Deye, Gregory
name: Turkevich, Leonid A.
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: We report non-conducting aerosol fiber (i.e., glass fiber) alignment in a DC electric field. Direct observation of fiber orientation state is demonstrated and quantitative analysis of fiber alignment is made using phase contrast microscopy in four different conditions: (i) dry air and naturally charged fibers, (ii) humid and naturally charged, (iii) humid and neutralized (Boltzmann charge distribution), and (iv) humid and neutralized with an electrostatic precipitator upstream electrodes (i.e., non-charged). The glass fiber aerosols generated by a vortex shaking method were conditioned using a Po-210 neutralizer or humidifier and were provided into a test unit where cylindrical or parallel plate electrodes are used and high voltage is applied to them. Fibers were collected on a filter immediately downstream from the electrodes and their images were taken through an optical microscope to visualize the fiber orientation and measure the alignment angles and lengths of the fibers. The results showed that under all four conditions tested, airborne glass fibers could be aligned to the electric field with different alignment quality, indicating that the glass fibers can be polarized in a steady electric field. In humid air, the fiber alignment along the field direction was observed to be much better and the number of uniform background particles (i.e., randomly oriented fibers) in angular distributions is smaller than that in dry air. Also, it was found that charged fibers in humid air could be better aligned with negligible uniform background than neutralized and non-charged fibers. Possible mechanisms about humidity and charge effects on enhanced fiber alignment are discussed to support the observations. The results indicate that the enhancement of alignment in an electric field would be possible in humid air for other non-conducting fibrous particles having surface chemistry similar to glass fibers.