cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Boundary unique continuation on $C^1$-Dini domains and the size of the singular set
Creators: name: Kenig, Carlos
name: Zhao, Zihui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Let $u$ be a harmonic function in a $C^1$-Dini domain $D$ such that $u$ vanishes on a boundary surface ball $\partial D \cap B_{5R}(0)$. We consider an effective version of its singular set (up to boundary) $\mathcal{S}(u):=\{X\in \overline{D}: u(X) = |\nabla u(X)| = 0\} $ and give an estimate of its $(d-2)$-dimensional Minkowski content, which only depends on the upper bound of some modified frequency function of $u$ centered at $0$. Such results are already known in the interior and at the boundary of convex domains, when the standard frequency function is monotone at every point. The novelty of our work on Dini domains is how to compensate for the lack of such monotone quantities at boundary as well as interior points.
description: 78 pages
$(\ell,p)$-Jones-Wenzl Idempotents
Creators: name: Martin, Stuart
name: Spencer, R. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: The Jones-Wenzl idempotents of the Temperley-Lieb algebra are celebrated elements defined over characteristic zero and for generic loop parameter. Given pointed field $(R, δ)$, we extend the existing results of Burrull, Libedinsky and Sentinelli to determine a recursive form for the idempotents describing the projective cover of the trivial ${\rm TL}_n^R(δ)$-module.
description: 15 pages, accepted for publication
Improving Action Quality Assessment using Weighted Aggregation
Creators: name: Farabi, Shafkat
name: Himel, Hasibul
name: Gazzali, Fakhruddin
name: Hasan, Md. Bakhtiar
name: Kabir, Md. Hasanul
name: Farazi, Moshiur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Action quality assessment (AQA) aims at automatically judging human action based on a video of the said action and assigning a performance score to it. The majority of works in the existing literature on AQA divide RGB videos into short clips, transform these clips to higher-level representations using Convolutional 3D (C3D) networks, and aggregate them through averaging. These higher-level representations are used to perform AQA. We find that the current clip level feature aggregation technique of averaging is insufficient to capture the relative importance of clip level features. In this work, we propose a learning-based weighted-averaging technique. Using this technique, better performance can be obtained without sacrificing too much computational resources. We call this technique Weight-Decider(WD). We also experiment with ResNets for learning better representations for action quality assessment. We assess the effects of the depth and input clip size of the convolutional neural network on the quality of action score predictions. We achieve a new state-of-the-art Spearman's rank correlation of 0.9315 (an increase of 0.45%) on the MTL-AQA dataset using a 34 layer (2+1)D ResNet with the capability of processing 32 frame clips, with WD aggregation.
description: Accepted for presentation at the IbPRIA 2022: 10th Iberian Conference on Pattern Recognition and Image Analysis Aveiro, Portugal. May 4-6, 2022
Bose-Einstein Condensation with Optimal Rate for Trapped Bosons in the Gross-Pitaevskii Regime
Creators: name: Brennecke, Christian
name: Schlein, Benjamin
name: Schraven, Severin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q10, 82B10

description: We consider a Bose gas consisting of $N$ particles in $\mathbb{R}^3$, trapped by an external field and interacting through a two-body potential with scattering length of order $N^{-1}$. We prove that low energy states exhibit complete Bose-Einstein condensation with optimal rate, generalizing previous work in \cite{BBCS1, BBCS4}, restricted to translation invariant systems. This extends recent results in \cite{NNRT}, removing the smallness assumption on the size of the scattering length.
description: 67 pages
Additional file 1 of Effects of physical fitness on mental health of Chinese college students: across-sectional study
Creators: name: Ma, Shuzhen
name: Yang, Yang
name: Soh, Kim Geok
name: Tan, Hermione
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Supplementary Material 1
Constitutive Modeling of the Tensile Behavior of Recycled Polypropylene-Based Composites
Creators: name: Wang, Kui
name: Peng, Yong
name: Matadi Boumbimba, Rodrigue
name: Bahlouli, Nadia
name: Pessey, Daniel
name: Ahzi, Said
name: Addiego, Frédéric
name: Rémond, Yves
Publisher: name: Manara - Qatar Research Repository
Year: 2024
Subjects: classificationCode: 40
subject: Engineering
classificationCode: 4016
subject: Materials engineering
subject: FOS: Materials engineering

description: The effect of reprocessing on the quasi-static uniaxial tensile behavior of two commercial polypropylene (PP)-based composites is experimentally investigated and modeled. In particular, the studied materials consist of an unfilled high-impact PP and a talc-filled high-impact PP. These PP composites are subjected to repeated processing cycles, including a grinding step and an extrusion step to simulate recycling at the laboratory level, the selected reprocessing numbers for this study being 0, 3, 6, 9, and 12. Because the repeated reprocessing leads to thermo-mechanical degradation by chain scission mechanisms, the tensile behavior of the two materials exhibits a continuous decrease of elastic modulus and failure strain with the increasing amount of reprocessing. A physically consistent three-dimensional constitutive model is used to predict the tensile response of non-recycled materials with strain rate dependence. For the recycled materials, the reprocessing effect is accounted by incorporating the reprocessing sensitive coefficient into the constitutive model for Young’s modulus, failure strain, softening, and hardening equations. Our predictions of true stress—true strain curves for non-recycled and recycled 108MF97 and 7510—are in good agreement with experimental data and can be useful for industries and companies which are looking for a model able to predict the recycling effect on mechanical behavior of polymer-based materials.
Other InformationPublished in: Materials
License: https://creativecommons.org/licenses/by/4.0/
See article on publisher's website: https://doi.org/10.3390/ma12152419
Bioactive DOPA melanin isolated and characterised from a marine actinobacterium Streptomyces sp. MVCS6 from Versova coast
Creators: name: P. Sivaperumal
name: K. Kamala
name: R. Rajaram
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Cancer
subject: Biological Sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Microbiology
subject: Biochemistry

description: The melanin pigment produced from Streptomyces sp., MVCS6 was isolated and dihydroxyphenyalanine (DOPA) melanin compound was biochemically identified and spectroscopically characterised (ultraviolet and FT-IR). DOPA melanin showed a promising activity as an antibacterial natural product against 12 pathogenic bacteria from hospital isolations, particularly, against Pseudomonas aeruginosa RMMH7 (inhibition zone of 18 ± 0.02 at 30 μg/disc, and MIC of 10 ± 0.02 μg/mL) and Vibrio parahaemolytics RMMH12 (inhibition zone of 15 mm ± 0.03 at 30 μg/disc, and MIC of 14 ± 0.02 μg/mL). Moreover, in vitro evaluation of reducing power (Ascorbic Acid Equivalent (160 μg/mL)), DPPH radical-scavenging (89%), NO-scavenging (72%) and lipid peroxidation activities (89.6%) were determined. Cytotoxicity of DOPA melanin against cervical cancer cell line showed a dose–response activity, and IC50 value was found to be 300 μg/mL. These results would open the way to propose Streptomyces sp. MVCS6 as a promising source of bioactive eumelanin with therapeutic potential in medicine.
Scanning force sensing at $μ$m-distances from a conductive surface with nanospheres in an optical lattice
Creators: name: Montoya, Cris
name: Alejandro, Eduardo
name: Eom, William
name: Grass, Daniel
name: Clarisse, Nicolas
name: Witherspoon, Apryl
name: Geraci, Andrew A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: High Energy Physics - Experiment (hep-ex)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The center-of-mass motion of optically trapped dielectric nanoparticles in vacuum is extremely well-decoupled from its environment, making a powerful tool for measurements of feeble sub-attonewton forces. We demonstrate a method to trap and manuever nanoparticles in an optical standing wave potential formed by retro-reflecting a laser beam from a metallic mirror surface. We can reliably position a $\sim 170$ nm diameter silica nanoparticle at distances of a few hundred nanometers to tens of microns from the surface of a gold-coated silicon mirror by transferring it from a single-beam tweezer trap into the standing wave potential. We can further scan the two dimensional space parallel to the mirror surface by using a piezo-driven mirror. This method enables three-dimensional scanning force sensing near surfaces using optically trapped nanoparticles, promising for high-sensitivity scanning force microscopy, tests of the Casimir effect, and tests of the gravitational inverse square law at micron scales.
description: 6 pages, 3 figures
PERSPECTIVAS SOBRE A FORMAÇÃO E A CARREIRA DE PROFISSIONAIS DE DESENVOLVIMENTO DE SOFTWARE
Creators: name: Mayer, Jonas
Publisher: name: figshare
Year: 2014
Subjects: Education
Theoretical Computer Science

description:
Este estudo tem por objetivo auxiliar na formação de acadêmicos dos cursos de graduação da área de tecnologia da informação, através do fornecimento de fatores que possam auxiliar em sua formação acadêmica e profissional. Buscando auxiliar a qualidade e efetividade do aprendizado através da exploração de metacognição, teoria do aprendizado e aspectos práticos, da aplicação e ganho de experiência através da disposição de dados sobre participação em projetos de pesquisa e desenvolvimento de software open source e facilitar a entrada no mercado de trabalho e desenvolvimento profissional dos acadêmicos através do fornecimento de perspectivas sobre o mercado de desenvolvimento de software, e trends tecnológicas.
Probing optical spin-currents using THz spin-waves in noncollinear magnetic bilayers
Creators: name: Lichtenberg, Tom
name: Beens, Maarten
name: Jansen, Menno H.
name: Duine, Rembert A.
name: Koopmans, Bert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optically induced spin currents have proven to be useful in spintronics applications, allowing for sub-ps all-optical control of magnetization. However, the mechanism responsible for their generation is still heavily debated. Here we use the excitation of spin-current induced THz spin-waves in noncollinear bilayer structures to directly study optical spin-currents in the time domain. We measure a significant laser-fluence dependence of the spin-wave phase, which can quantitatively be explained assuming the spin current is proportional to the time derivative of the magnetization. Measurements of the absolute spin-wave phase, supported by theoretical calculations and micromagnetic simulations, suggest that a simple ballistic transport picture is sufficient to properly explain spin transport in our experiments and that the damping-like optical STT dominates THz spin-wave generation. Our findings suggest laser-induced demagnetization and spin-current generation share the same microscopic origin.
description: Supplementary information included
Enstrophy without boost symmetry
Creators: name: Pinzani-Fokeeva, Natalia
name: Yarom, Amos
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Nuclear Theory (nucl-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We construct an approximately conserved current for $2+1$ dimensional, Aristotelian (non boost invariant), fluid flow. When Aristotelian symmetry is enhanced to Galilean symmetry, this current matches the enstrophy current responsible for the inverse cascade in incompressible fluids. Other enhancements of Aristotelian symmetry discussed in this work include Lorentzian, Carrollian and Lifshitz scale symmetry.
description: v2: a few more comments and clarifications
Platicon microcomb generation using laser self-injection locking
Creators: name: Lihachev, Grigory
name: Liu, Junqiu
name: Weng, Wenle
name: Chang, Lin
name: Guo, Joel
name: He, Jijun
name: Wang, Rui Ning
name: Anderson, Miles H.
name: Bowers, John E.
name: Kippenberg, Tobias J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The past decade has witnessed major advances in the development of microresonator-based frequency combs (microcombs) that are broadband optical frequency combs with repetition rates in the millimeter-wave to microwave domain. Integrated microcombs can be manufactured using wafer-scale process and have been applied in numerous applications. Most of these advances are based on the harnessing of dissipative Kerr solitons (DKS) in optical microresonators with anomalous group velocity dispersion (GVD). However, microcombs can also be generated with normal GVD using dissipative localized structures that are referred to as "dark pulse", "switching wave" or "platicon". Importantly, as most materials feature intrinsic normal GVD, the requirement of dispersion engineering is significantly relaxed for platicon generation. Therefore while DKS microcombs require particular designs and fabrication processes, platicon microcombs can be readily built using standard CMOS-compatible platforms such as thin-film (i.e. typically below 300 nm) Si3N4. Yet laser self-injection locking that has been recently used to create highly compact integrated DKS microcomb modules has not been demonstrated for platicons. Here we report the first fully integrated platicon microcomb operating at a microwave-K-band repetition rate. Using laser self-injection locking of a DFB laser edge-coupled to a Si3N4 microresonator, platicons are electrically initiated and stably maintained, enabling a compact microcomb module without any complex control. We further characterize the phase noise of the platicon repetition rate and the pumping laser. The observation of self-injection-locked platicons facilitates future wide adoption of microcombs as a build-in block in standard photonic integrated architectures via commercial foundry service.
A new alternariol glucoside from fungus Alternaria alternate cib-137
Creators: name: Guo-Bo Xu
name: Pu, Xiang
name: Bai, Huan-Huan
name: Chen, Xiao-Zhen
name: Guo-You Li
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Science Policy
subject: Biological Sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Biochemistry

description: A new secondary metabolite, 2-O-methylalternariol 4-O-β-[4-methoxyl-glucopyranoside] (1), together with four known compounds alternariol methyl ether (2), altenuene (3), isoaltenuene (4) and 2-(2′S-hydroxypropyl)-5-methyl-7-hydroxychromone (5), was isolated from the fungus Alternaria alternate cib-137. Its structure was elucidated on the basis of spectroscopic data. Compounds 3 and 4 demonstrated moderate activity against Staphylococcus aureus.
Magnetic phase diagram of $A_{2}$[FeCl$_{5}$(H$_{2}$O)] ($A$ = K, Rb, NH$_{4}$)
Creators: name: Lee, Minseong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Erythrosiderites with the formula A2FeX5H2O, where A = Rb, K, and (NH4) and X = Cl and Br are intriguing systems that possess various magnetic and electric phases, as well as multiferroic phases in which magnetism and ferroelectricity are coupled. In this report, we study the magnetic phase diagram of erythrosiderites as a function of superexchange interactions. To this end, we perform classical Monte Carlo simulations on magnetic Hamiltonians that contain five different superexchange interactions with single-ion anisotropies. Our phase diagram contains all magnetic ground states that have been experimentally observed in these materials. We argue that the ground states can be explained by varying the ratio of J4/J2. For J4/J2 > 0.95 a cycloidal spins structure is stabilized as observed in (NH4)2FeCl5H2O and otherwise, a collinear spin structure is stabilized as observed in (K,Rb)2FeCl5H2O. We also show that the difference in the single-ion anisotropy along a- and c- axes is essential to stabilize the intermediate state observed in (NH)2FeCl5H2O.
description: 8 pages, 6 figures, submitted
Sorald: Automatic Patch Suggestions for SonarQube Static Analysis Violations
Creators: name: Etemadi, Khashayar
name: Harrand, Nicolas
name: Larsen, Simon
name: Adzemovic, Haris
name: Phu, Henry Luong
name: Verma, Ashutosh
name: Madeiral, Fernanda
name: Wikstrom, Douglas
name: Monperrus, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Previous work has shown that early resolution of issues detected by static code analyzers can prevent major costs later on. However, developers often ignore such issues for two main reasons. First, many issues should be interpreted to determine if they correspond to actual flaws in the program. Second, static analyzers often do not present the issues in a way that is actionable. To address these problems, we present Sorald: a novel system that devise metaprogramming templates to transform the abstract syntax trees of programs and suggest fixes for static analysis warnings. Thus, the burden on the developer is reduced from interpreting and fixing static issues, to inspecting and approving full fledged solutions. Sorald fixes violations of 10 rules from SonarJava, one of the most widely used static analyzers for Java. We evaluate Sorald on a dataset of 161 popular repositories on Github. Our analysis shows the effectiveness of Sorald as it fixes 65% (852/1,307) of the violations that meets the repair preconditions. Overall, our experiments show it is possible to automatically fix notable violations of the static analysis rules produced by the state-of-the-art static analyzer SonarJava.
Back to sources -- the role of losses and coherence in super-resolution imaging revisited
Creators: name: Kurdzialek, Stanislaw
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photon losses are intrinsic for any translationally invariant optical imaging system with a non-trivial Point Spread Function, and the relation between the transmission factor and the coherence properties of an imaged object is universal -- we demonstrate the rigorous proof of this statement, based on the principles of quantum mechanics. The fundamental limit on the precision of estimating separation between two partially coherent sources is then derived. The careful study of the role of photon losses allows to resolve conflicting claims present in previous works. We compute the Quantum Fisher Information for the generic model of optical 4f imaging system, and use prior considerations to validate the result for a general, translationally invariant imaging apparatus. We prove that the spatial-mode demultiplexing (SPADE) measurement, optimal for non-coherent sources, remains optimal for an arbitrary degree of coherence. Moreover, we show that some approximations, omnipresent in theoretical works about optical imaging, inevitably lead to unphysical, zero-transmission models, resulting in misleading claims regarding fundamental resolution limits.
description: 8+4 pages, 4 figures
Dielectric constant and density of aqueous alkali halide solutions by molecular dynamics: A force field assessment
Creators: name: Saric, Denis
name: Kohns, Maximillian
name: Vrabec, Jadran
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: DDC::500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie
subject: molecular dynamics
subject: electrolyte
subject: molecular simulation
subject: dielectric properties
subject: ion
subject: water model

description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 152, 164502 (2020) and may be found at https://doi.org/10.1063/1.5144991.
description: The concentration dependence of the dielectric constant and the density of 11 aqueous alkali halide solutions (LiCl, NaCl, KCl, RbCl, CsCl, LiI, NaI, KI, CsI, KF, and CsF) is investigated by molecular simulation. Predictions using eight non-polarizable ion force fields combined with the TIP4P/ε water model are compared to experimental data. The influence of the water model and the temperature on the results for the NaCl brine are also addressed. The TIP4P/ε water model improves the accuracy of dielectric constant predictions compared to the SPC/E water model. The solution density is predicted well by most ion models. Almost all ion force fields qualitatively capture the decline of the dielectric constant with the increase of concentration for all solutions and with the increase of temperature for NaCl brine. However, the sampled dielectric constant is mostly in poor quantitative agreement with experimental data. These results are related to the microscopic solution structure, ion pairing, and ultimately the force field parameters. Ion force fields with excessive contact ion pairing and precipitation below the experimental solubility limit generally yield higher dielectric constant values. An adequate reproduction of the experimental solubility limit should therefore be a prerequisite for further investigations of the dielectric constant of aqueous electrolyte solutions by molecular simulation.
title: Educação, Formação e Transformação Digital em Estabelecimentos Prisionais
Creators: name: Moreira, J. António
name: Caeiro, Domingos
name: Dias-Trindade, Sara
Publisher: name: Universidade Aberta
Year: 2020

description: A educação é um direito universal e desempenha um papel crucial no desenvolvimento humano, ajudando o indivíduo a construir a sua personalidade e o seu carácter. Mesmo em situação de reclusão, e tendo em consideração as Recomendações do Conselho da Europa referentes à Educação nas Prisões e as Regras das prisões europeias, os cidadãos possuem os mesmos direitos no acesso à educação. Partindo, pois, destes pressupostos, nesta obra apresentam-se um conjunto de textos de autores de várias nacionalidades que indagam e exploram a importância do desenvolvimento dos processos educacionais em contexto de reclusão, especificamente no que diz respeito à utilização de tecnologias e plataformas digitais.
Avaliação da função pulmonar e força muscular respiratória em indivíduos comretardo mental, portadores e não portadores da Trissomia 21 no Distrito Federal
Creators: name: Vínicius Zacarias Maldaner Da Silva
name: Silva, Marianne Lucena Da
name: Godoy, José Roberto Pimenta De
name: Junior, Gerson Cipriano
name: Jônatas De França Barros
Publisher: name: Zenodo
Year: 2012

description: Trabalho apresentado em Congresso.
Enhancement of polarization and magnetization in polycrystalline magnetoelectric composite
Creators: name: Jayachandran, K. P.
name: Guedes, J. M.
name: Rodrigues, H. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: J.2; I.6.0
subject: 74Qxx

description: Electrical control of magnetization or magnetic control of polarization offers an extra degree of freedom in materials possessing both electric and magnetic dipole moments viz., magnetoelectric multiferroics. Microstructure with polycrystalline configurations that enhances the overall polarization/magnetization and that outperform single crystalline configurations are identified. The characterization of local fields corresponding to the polycrystal configuration underlines nontrivial role played by randomness in better cross-coupling mediated by anisotropic and asymmetric strains.
description: 6 pages, plus 9 pages of Supplementary Material
Realization of the field-free Josephson Diode
Creators: name: Wu, Heng
name: Wang, Yaojia
name: Xu, Yuanfeng
name: Sivakumar, Pranava K.
name: Pasco, Chris
name: Filippozzi, Ulderico
name: Parkin, Stuart S. P.
name: Zeng, Yu-Jia
name: McQueen, Tyrel
name: Ali, Mazhar N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The superconducting analog to the semiconducting diode, the Josephson diode, has long been sought, with multiple avenues to realization proposed by theorists. Exhibiting magnetic-field free, single directional superconductivity with Josephson coupling of the supercurrent across a tunnel barrier, it would serve as the building-block for next-generation superconducting circuit technology. Here we realized the field-free Josephson diode using an inversion symmetry breaking heterostructure of $\mathrm{NbSe_2/Nb_3Br_8/NbSe_2}$. We demonstrate, for the first time without magnetic field, the junction can be superconducting in one direction while normal in the opposite direction. Based on that, half-wave rectification of a square-wave excitation was achieved with low switching current density ($~2.2\times 10^2 \mathrm{A/cm^2}$), high rectification ratio ($~10^4$) and high robustness (at least $10^4$ cycles). We also demonstrate symmetric $ΔI_\mathrm{c}$ (the difference between positive and negative critical currents) behavior with field and the expected Fraunhofer current phase relation of a Josephson junction. This realization raises fundamental questions about the Josephson effect through an insulator when breaking symmetry, and opens the door to ultralow power, high speed, superconducting circuits for logic and signal modulation.
description: 30 pages, 14 figures
Total phenolic content, ferric reducing and DPPH scavenging activity of Arum dioscoridis
Creators: name: Karahan, Fatih
name: Kulak, Muhittin
name: Urlu, Emrah
name: Gözüacik, Hediye Gül
name: Böyümez, Tülay
name: Nazım Şekeroğlu
name: Doganturk, Ibrahim Halil
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Biological Sciences
subject: Ecology
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Molecular Biology
subject: Cell Biology
subject: Biochemistry

description: Arum dioscoridis, locally called ‘Gavur pancari’, is a wild plant the leaves of which have been used as vegetable and for preparing special soup which has a sour taste. This study was set up to determine in vitro antioxidant activities and total phenolic and flavonoid contents of different extracts of A. dioscoridis. Free radical scavenging activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing activity with different concentrations of ethanol, methanol, acetone and water extracts of the plant leaves. Total phenolic and flavonoid contents were widely variable depending on solvents. Ethanol and methanol extractions of the plant material showed better performances with respect to both phenolic and flavonoid contents, respectively. The highest phenolic and flavonoid contents of ethanol and methanol extracts were 100.890 mg/g GAE and 72.643 mg/g QE, respectively. The lower DPPH scavenging and ferric reducing activities were determined in comparison with previous reports and standard synthetic chemicals.
Universal information of critical quantum spin chains from wavefunction overlaps
Creators: name: Zou, Yijian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Given a critical quantum spin chain, we show how universal information about its quantum critical point can be extracted from wavefunction overlaps. More specifically, we consider overlap between low-energy eigenstates of the spin chain Hamiltonian with different boundary conditions, namely periodic boundary conditions and open boundary conditions. We show that such overlaps decay polynomially with the system size, where the exponent only depends on the central charge. Furthermore, the bulk-to-boundary operator product expansion (OPE) coefficients can be extracted from the overlaps involving excited states. We illustrate the proposal with the Ising model and the three-state Potts model.
description: 11 pages, 6 figures
Early ovariectomy unmasking the non-somatic origin of murine anti-A reactive IgM
Creators: name: Arend, Peter
Publisher: name: figshare
Year: 2016
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Hematology
subject: Medicine
subject: Biochemistry
subject: Developmental Biology
subject: Zoology
subject: 60114 Systems Biology
subject: Structural Biology
subject: Stem Cells
subject: Cell Biology
subject: Genetics

description: The germline encoding of a non-immune IgM molecule in mammals was experimentally documented for the first time by specifically timed ovariectomy of C57BL/10 mice. Although ovariectomy and castrations have been de­scribed to result in uncontrolled and/or enhanced humoral and cellular immunity, involving increasing weights of spleen and thymus with pronounced B and T cell productions, the development of the mercaptoethanol-sensitive and complement-binding, non-immune anti-A reactivity in murine plasma was not enhanced after ovariectomy performed in C57BL/10 mice before the onset of puberty. This non-immune murine anti-A, which is complementary to trans-species, syngeneic ovarian GalNAc-glycan-bearing glycolipids and distinct from cross-reactive adaptive anti-A antibody, was strongly retarded or did not ap­pear at all in plasmas of animals ovariectomized at the age of 20 days. Thus, contrary to our previous view, this reactivity is unlikely to originate from a somatic, primary immune or autoimmune response. All murine tissues expressed the species-typical Forssman reactivity and further A-like structures were, by innate human anti-A antibody, identified in male and female reproductive and endodermal organs but the murine anti-A was exclusively inhibited by syngeneic ovarian glycolipids. Moreover, the early ovarian tissue, which represents a last evolutionary and/or developmental location, showed a developmental polymorphism characterized by DBL and HPA reactivity indicating the involvement of O-GalNAc-determined mucin-type A-like Tn and TF epitopes that, when expressed by non-developmental tissues, signify malignancy.
A Review of Anonymization for Healthcare Data
Creators: name: Olatunji, Iyiola E.
name: Rauch, Jens
name: Katzensteiner, Matthias
name: Khosla, Megha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Mining health data can lead to faster medical decisions, improvement in the quality of treatment, disease prevention, reduced cost, and it drives innovative solutions within the healthcare sector. However, health data is highly sensitive and subject to regulations such as the General Data Protection Regulation (GDPR), which aims to ensure patient's privacy. Anonymization or removal of patient identifiable information, though the most conventional way, is the first important step to adhere to the regulations and incorporate privacy concerns. In this paper, we review the existing anonymization techniques and their applicability to various types (relational and graph-based) of health data. Besides, we provide an overview of possible attacks on anonymized data. We illustrate via a reconstruction attack that anonymization though necessary, is not sufficient to address patient privacy and discuss methods for protecting against such attacks. Finally, we discuss tools that can be used to achieve anonymization.
A mathematical analysis of Casimir interactions I: The scalar field
Creators: name: Fang, Yan-Long
name: Strohmaier, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81T55, 58J50

description: Starting from the construction of the free quantum scalar field of mass $m\geq 0$ we give mathematically precise and rigorous versions of three different approaches to computing the Casimir forces between compact obstacles. We then prove that they are equivalent.
description: 41 pages, 2 figures, LaTeX, more details added, typos corrected, references added
Electrically driven programmable phase-change meta-switch reaching 80% efficiency
Creators: name: Abdollahramezani, Sajjad
name: Hemmatyar, Omid
name: Taghinejad, Mohammad
name: Taghinejad, Hossein
name: Krasnok, Alex
name: Eftekhar, Ali A.
name: Teichrib, Christian
name: Deshmukh, Sanchit
name: El-Sayed, Mostafa
name: Pop, Eric
name: Wuttig, Matthias
name: Alu, Andrea
name: Cai, Wenshan
name: Adibi, Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Despite recent advances in active metaoptics, wide dynamic range combined with high-speed reconfigurable solutions is still elusive. Phase-change materials (PCMs) offer a compelling platform for metasurface optical elements, owing to the large index contrast and fast yet stable phase transition properties. Here, we experimentally demonstrate an in situ electrically-driven reprogrammable metasurface by harnessing the unique properties of a phase-change chalcogenide alloy, Ge$_{2}$Sb$_{2}$Te$_{5}$ (GST), in order to realize fast, non-volatile, reversible, multilevel, and pronounced optical modulation in the near-infrared spectral range. Co-optimized through a multiphysics analysis, we integrate an efficient heterostructure resistive microheater that indirectly heats and transforms the embedded GST film without compromising the optical performance of the metasurface even after several reversible phase transitions. A hybrid plasmonic-PCM meta-switch with a record electrical modulation of the reflectance over eleven-fold (an absolute reflectance contrast reaching 80%), unprecedented quasi-continuous spectral tuning over 250 nm, and switching speed that can potentially reach a few kHz is presented. Our work represents a significant step towards the development of fully integrable dynamic metasurfaces and their potential for beamforming applications.
Early ovariectomy unmasking the non-somatic origin of murine anti-A reactive IgM
Creators: name: Arend, Peter
Publisher: name: figshare
Year: 2016
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Hematology
subject: Medicine
subject: Biochemistry
subject: Developmental Biology
subject: Zoology
subject: 60114 Systems Biology
subject: Structural Biology
subject: Stem Cells
subject: Cell Biology
subject: Genetics

description: The germline encoding of a non-immune IgM molecule in mammals was experimentally documented for the first time by specifically timed ovariectomy of C57BL/10 mice. Although ovariectomy and castrations have been de­scribed to result in uncontrolled and/or enhanced humoral and cellular immunity, involving increasing weights of spleen and thymus with pronounced B and T cell productions, the development of the mercaptoethanol-sensitive and complement-binding, non-immune anti-A reactivity in murine plasma was not enhanced after ovariectomy performed in C57BL/10 mice before the onset of puberty. This non-immune murine anti-A, which is complementary to trans-species, syngeneic ovarian GalNAc-glycan-bearing glycolipids and distinct from cross-reactive adaptive anti-A antibody, was strongly retarded or did not ap­pear at all in plasmas of animals ovariectomized at the age of 20 days. Thus, contrary to our previous view, this reactivity is unlikely to originate from a somatic, primary immune or autoimmune response. All murine tissues expressed the species-typical Forssman reactivity and further A-like structures were, by innate human anti-A antibody, identified in male and female reproductive and endodermal organs, while the murine anti-A was exclusively inhibited by syngeneic ovarian glycolipids. Moreover, the early ovarian tissue, which represents a last evolutionary and/or developmental location, showed a developmental polymorphism characterized by DBL and HPA reactivity indicating the involvement of O-GalNAc-determined mucin-type A-like Tn and TF epitopes that, when expressed by non-developmental tissues, signify malignancy.
Entanglement from tensor networks on a trapped-ion QCCD quantum computer
Creators: name: Foss-Feig, Michael
name: Ragole, Stephen
name: Potter, Andrew
name: Dreiling, Joan
name: Figgatt, Caroline
name: Gaebler, John
name: Hall, Alex
name: Moses, Steven
name: Pino, Juan
name: Spaun, Ben
name: Neyenhuis, Brian
name: Hayes, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The ability to selectively measure, initialize, and reuse qubits during a quantum circuit enables a mapping of the spatial structure of certain tensor-network states onto the dynamics of quantum circuits, thereby achieving dramatic resource savings when using a quantum computer to simulate many-body systems with limited entanglement. We experimentally demonstrate a significant benefit of this approach to quantum simulation: In addition to all correlation functions, the entanglement structure of an infinite system -- specifically the half-chain entanglement spectrum -- is conveniently encoded within a small register of "bond qubits" and can be extracted with relative ease. Using a trapped-ion QCCD quantum computer equipped with selective mid-circuit measurement and reset, we quantitatively determine the near-critical entanglement entropy of a correlated spin chain directly in the thermodynamic limit and show that its phase transition becomes quickly resolved upon expanding the bond-qubit register.
description: 5 pages + supplemental material
Evidence of topological Shiba bands in artificial spin chains on superconductors
Creators: name: Schneider, Lucas
name: Beck, Philip
name: Posske, Thore
name: Crawford, Daniel
name: Mascot, Eric
name: Rachel, Stephan
name: Wiesendanger, Roland
name: Wiebe, Jens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A major challenge in developing topological superconductors for implementing topological quantum computing is their characterization and control. It has been proposed that a p-wave gapped topological superconductor can be fabricated with single-atom precision by assembling chains of magnetic atoms on s-wave superconductors with spin-orbit coupling. Here, we analyze the Bogoliubov quasiparticle interference in atom-by-atom constructed Mn chains on Nb(110) and for the first time reveal the formation of multi-orbital Shiba bands using momentum resolved measurements. We find evidence that one band features a topologically non-trivial p-wave gap as inferred from its shape and particle-hole asymmetric intensity. Our work is an important step towards a distinct experimental determination of topological phases in multi-orbital systems by bulk electron band structure properties only.
description: 13 pages, 4 figures
Controlled length-dependent interaction of Majorana modes in Yu-Shiba-Rusinov chains
Creators: name: Schneider, Lucas
name: Beck, Philip
name: Neuhaus-Steinmetz, Jannis
name: Posske, Thore
name: Wiebe, Jens
name: Wiesendanger, Roland
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic atoms on superconductors induce localized Yu-Shiba-Rusinov (YSR) bound states. The proposal that topological superconductivity and Majorana modes can be engineered in arrays of hybridizing YSR states has led to their intense investigation. Here, we study Majorana modes emerging from bands of hybridized YSR states in artificially constructed Manganese (Mn) chains on superconducting Niobium (Nb). By controlling the chain geometry on the single atom level, we can measure the interaction-induced energy splitting of Majorana modes from both chain's ends with increasing chain length. We find periodic lengths where their interaction is tuned to zero within the experimental energy resolution. Our work unravels ways to manipulate and minimize interactions between Majorana modes in finite-size systems as required for Majorana-based storage and processing of quantum information.
description: 13 pages, 5 figures
A dual formula for the noncommutative transport distance
Creators: name: Wirth, Melchior
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this article we study the noncommutative transport distance introduced by Carlen and Maas and its entropic regularization defined by Becker and Li. We prove a duality formula that can be understood as a quantum version of the dual Benamou-Brenier formulation of the Wasserstein distance in terms of subsolutions of Hamilton-Jacobi-Bellmann equation.
A simple proof of Dvoretzky-type theorem for Hausdorff dimension in doubling spaces
Creators: name: Mendel, Manor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 51F30, 28A78, 46B85

description: The ultrametric skeleton theorem [Mendel, Naor 2013] implies, among other things, the following nonlinear Dvoretzky-type theorem for Hausdorff dimension: For any $0
description: 13 pages, 1 figure. Minor changes and improvements. Accepted to "Analysis and Geometry in Metric Spaces"
Frobenius-Schur Indicators and the Mapping Class Group of the Torus
Creators: name: Farnsteiner, Julian
name: Schweigert, Christoph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The Turaev-Viro state sum invariant can be extended to 3-manifolds with free boundaries. We use this fact to describe generalized Frobenius-Schur indicators as Turaev-Viro invariants of solid tori. This provides a geometric understanding of the $\mathrm{SL}(2,\mathbb{Z})$-equivariance of these indicators.
description: 29 pages
Contrasting social and non-social sources of predictability in human mobility
Creators: name: Chen, Zexun
name: Kelty, Sean
name: Welles, Brooke Foucault
name: Bagrow, James P.
name: Menezes, Ronaldo
name: Ghoshal, Gourab
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Social structures influence a variety of human behaviors including mobility patterns, but the extent to which one individual's movements can predict another's remains an open question. Further, latent information about an individual's mobility can be present in the mobility patterns of both social and non-social ties, a distinction that has not yet been addressed. Here we develop a "colocation" network to distinguish the mobility patterns of an ego's social ties from those of non-social colocators, individuals not socially connected to the ego but who nevertheless arrive at a location at the same time as the ego. We apply entropy and predictability measures to analyse and bound the predictive information of an individual's mobility pattern and the flow of that information from their top social ties and from their non-social colocators. While social ties generically provide more information than non-social colocators, we find that significant information is present in the aggregation of non-social colocators: 3-7 colocators can provide as much predictive information as the top social tie, and colocators can replace up to 85% of the predictive information about an ego, compared with social ties that can replace up to 94% of the ego's predictability. The presence of predictive information among non-social colocators raises privacy concerns: given the increasing availability of real-time mobility traces from smartphones, individuals sharing data may be providing actionable information not just about their own movements but the movements of others whose data are absent, both known and unknown individuals.
description: 20 pages, 6 figures
Strain and pseudo-magnetic fields in optical lattices from density-assisted tunneling
Creators: name: Jamotte, Maxime
name: Goldman, Nathan
name: Di Liberto, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Applying time-periodic modulations is routinely used to control and design synthetic matter in quantum-engineered settings. In lattice systems, this approach is explored to engineer band structures with non-trivial topological properties, but also to generate exotic interaction processes. A prime example is density-assisted tunneling, by which the hopping amplitude of a particle between neighboring sites explicitly depends on their respective occupations. Here, we show how density-assisted tunneling can be tailored in view of simulating the effects of strain in synthetic graphene-type systems. Specifically, we consider a mixture of two atomic species on a honeycomb optical lattice: one species forms a Bose-Einstein condensate in an anisotropic harmonic trap, whose inhomogeneous density profile induces an effective uniaxial strain for the second species through density-assisted tunneling processes. In direct analogy with strained graphene, the second species experiences a pseudo magnetic field, hence exhibiting relativistic Landau levels and the valley Hall effect. Our proposed scheme introduces a unique platform for the investigation of strain-induced gauge fields and their possible interplay with quantum fluctuations and collective excitations.
description: 13 pages, 12 figures