cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cool DZ white dwarfs I: Identification and spectral analysis
Creators: name: Hollands, Mark
name: Koester, Detlev
name: Alekseev, Vadim
name: Herbert, Emma
name: Gaensicke, Boris T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarfs with metal lines in their spectra act as signposts for post-main sequence planetary systems. Searching the Sloan Digital Sky Survey (SDSS) data release 12, we have identified 231 cool (<9000 K) DZ white dwarfs with strong metal absorption, extending the DZ cooling sequence to both higher metal abundances, lower temperatures, and hence longer cooler ages. Of these 231 systems, 104 are previously unknown white dwarfs. Compared with previous work, our spectral fitting uses improved model atmospheres with updated line profiles and line-lists, which we use to derive effective temperatures and abundances for up to 8 elements. We also determine spectroscopic distances to our sample, identifying two halo-members with tangential space-velocities >300 kms-1. The implications of our results on remnant planetary systems are to be discussed in a separate paper.
description: 46 pages, 26 Figures, 8 Tables, Accepted for publication in MNRAS
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1794

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
Dijkgraaf-Witten $Z_2$-invariants for Seifert manifolds
Creators: name: King, Simon
name: Matveev, Sergei
name: Tarkaev, Vladimir
name: Turaev, Vladimir
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: In this short paper we compute the values of Dijkgraaf-Witten invariants over $Z_2$ for all orientable Seifert manifolds with orientable bases.
description: 6 pages, 2 figures
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1786

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
A kinetic regime of hydrodynamic fluctuations and long time tails for a Bjorken expansion
Creators: name: Akamatsu, Yukinao
name: Mazeliauskas, Aleksas
name: Teaney, Derek
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We develop a set of kinetic equations for hydrodynamic fluctuations which are equivalent to nonlinear hydrodynamics with noise. The hydro-kinetic equations can be coupled to existing second order hydrodynamic codes to incorporate the physics of these fluctuations, which become dominant near the critical point. We use the hydro-kinetic equations to calculate the modifications of energy momentum tensor by thermal fluctuations from the earliest moments and at late times in Bjorken expansion. The solution to the kinetic equations precisely determines the coefficient of the first fractional power ($\propto τ^{-3/2}$) in the energy momentum tensor gradient expansion. Numerically, we find that the contribution to the longitudinal pressure from hydrodynamic fluctuations is comparable to the second order hydrodynamic terms for typical medium parameters used to simulate heavy ion collisions.
description: 5 pages, no figures, Proceedings for the 26th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2017), February 5-11 2017, Chicago, Illinois, USA
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1793

description: von [Abraham Gotthelf] Kästner
description: Brief beginnt auf Bl. 104r
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1789

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
Small Firms, Management Strengths and External Expertise, 1996
Creators: name: Bryson, J. R.
Publisher: name: UK Data Service
Year: 2000

description: The aims of this study were:
 to identify the management competencies and weaknesses of small and medium-sized enterprises (SMEs), focusing on the availability of internal expertise in relation to that available from external sources;
 to assess the significance for SMEs of private and public sector business service expertise (Business Link) for processes of strategic change and innovation or adaptation to external competitive pressures;
 to explore the processes by which the demand for external expertise is generated by SMEs, the types of work undertaken and the impact of such expertise on performance and competitiveness;
 to explore the regional implications of these decisions by examining these processes in different operating environments;
 to extend theoretical thinking about the position of SMEs in the wider process of production, and to develop the notion of the 'extended' firms in which the boundaries between externalised and internalised management expertise are increasingly blurred.
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1782

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
Frequency and predictive factors of hypoglycemia in patients treated with rhIGF-1: Data from the Eu-IGFD Registry. Supplementary materials
Creators: name: Bang, Peter
name: Polak, Michel
name: Bossowski, Artur
name: Maghnie, Mohamad
name: Argente, Jesús
name: Ramon-Krauel, Marta
name: Sert, Caroline
name: Perrot, Valerie
name: Mazain, Sarah
name: Woelfle, Joachim
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Plain language summary and supplementary tables 1–3 to accompany the manuscript titled: Frequency and predictive factors of hypoglycemia in patients treated with rhIGF-1: Data from the Eu-IGFD Registry, published in the Journal of Clinical Endocrinology and Metabolism.
Galactic Doppelganger: The chemical similarity among field stars and among stars with a common birth origin
Creators: name: Ness, M.
name: Rix, H-W.
name: Hogg, David W.
name: Casey, A. R.
name: Holtzman, J.
name: Fouesneau, M.
name: Zasowski, G.
name: Geisler, D.
name: Shetrone, M.
name: Minniti, D.
name: Frinchaboy, Peter M.
name: Roman-Lopes, Alexandre
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore to which extent stars within Galactic disk open clusters resemble each other in the high-dimensional space of their photospheric element abundances, and contrast this with pairs of field stars. Our analysis is based on abundances for 20 elements, homogeneously derived from APOGEE spectra (with carefully quantified uncertainties, with a median value of $\sim 0.03$ dex). We consider 90 red giant stars in seven open clusters and find that most stars within a cluster have abundances in most elements that are indistinguishable (in a $χ^2$-sense) from those of the other members, as expected for stellar birth siblings. An analogous analysis among pairs of $>1000$ field stars shows that highly significant abundance differences in the 20-dimensional space can be established for the vast majority of these pairs, and that the APOGEE-based abundance measurements have high discriminating power. However, pairs of field stars whose abundances are indistinguishable even at 0.03~dex precision exist: $\sim 0.3$ percent of all field star pairs, and $\sim 1.0$ percent of field star pairs at the same (solar) metallicity [Fe/H] = $0 \pm 0.02$. Most of these pairs are presumably not birth siblings from the same cluster, but rather doppelganger. Our analysis implies that 'chemical tagging' in the strict sense, identifying birth siblings for typical disk stars through their abundance similarity alone, will not work with such data. However, our approach shows that abundances have extremely valuable information for probabilistic chemo-orbital modeling and combined with velocities, we have identified new cluster members from the field.
description: submitted to ApJ
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1795

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
An EM Based Probabilistic Two-Dimensional CCA with Application to Face Recognition
Creators: name: Safayani, Mehran
name: Ahmadi, Seyed Hashem
name: Afrabandpey, Homayun
name: Mirzaei, Abdolreza
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recently, two-dimensional canonical correlation analysis (2DCCA) has been successfully applied for image feature extraction. The method instead of concatenating the columns of the images to the one-dimensional vectors, directly works with two-dimensional image matrices. Although 2DCCA works well in different recognition tasks, it lacks a probabilistic interpretation. In this paper, we present a probabilistic framework for 2DCCA called probabilistic 2DCCA (P2DCCA) and an iterative EM based algorithm for optimizing the parameters. Experimental results on synthetic and real data demonstrate superior performance in loading factor estimation for P2DCCA compared to 2DCCA. For real data, three subsets of AR face database and also the UMIST face database confirm the robustness of the proposed algorithm in face recognition tasks with different illumination conditions, facial expressions, poses and occlusions.
Brief an Johann III Bernoulli
Creators: name: Kästner, Abraham Gotthelf
Publisher: name: [s.n.]
Year: 1792

description: von [Abraham Gotthelf] Kästner
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Verzeichnung=Description=Inventaire Dezember 2014 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis und Briefkatalog
Poverty, Wealth and Citizenship : A Discursive Interview Study and Newspaper Monitoring Exercise, 1996
Creators: name: Melrose, M.
name: Dean, H.
Publisher: name: UK Data Service
Year: 1999

description: The aims of this project were:
 to explore prevailing beliefs and popular discourses relating to the nature, extent and 'risk' of poverty and wealth;
 to investigate how such beliefs and discourses relate to people's understanding and experiences of citizenship.
Logical Learning Through a Hybrid Neural Network with Auxiliary Inputs
Creators: name: Wan, Fang
name: Song, Chaoyang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The human reasoning process is seldom a one-way process from an input leading to an output. Instead, it often involves a systematic deduction by ruling out other possible outcomes as a self-checking mechanism. In this paper, we describe the design of a hybrid neural network for logical learning that is similar to the human reasoning through the introduction of an auxiliary input, namely the indicators, that act as the hints to suggest logical outcomes. We generate these indicators by digging into the hidden information buried underneath the original training data for direct or indirect suggestions. We used the MNIST data to demonstrate the design and use of these indicators in a convolutional neural network. We trained a series of such hybrid neural networks with variations of the indicators. Our results show that these hybrid neural networks are very robust in generating logical outcomes with inherently higher prediction accuracy than the direct use of the original input and output in apparent models. Such improved predictability with reassured logical confidence is obtained through the exhaustion of all possible indicators to rule out all illogical outcomes, which is not available in the apparent models. Our logical learning process can effectively cope with the unknown unknowns using a full exploitation of all existing knowledge available for learning. The design and implementation of the hints, namely the indicators, become an essential part of artificial intelligence for logical learning. We also introduce an ongoing application setup for this hybrid neural network in an autonomous grasping robot, namely as_DeepClaw, aiming at learning an optimized grasping pose through logical learning.
description: 11 pages, 9 figures, 4 tables
International Social Assistance Database, 1996
Creators: name: Ditch, J.
Publisher: name: UK Data Service
Year: 1999

description: The objective of this study was to provide information about the range of social assistance benefits and services in 24 OECD countries. The benefits included are those designed to give a minimum level of subsistence to people in need based on a test of resources. All data have been verified and updated to May 1996 by government officials in each country.
Energy Spectra of Abundant Cosmic-ray Nuclei in Sources, According to the ATIC Experiment
Creators: name: Panov, A. D.
name: Sokolskaya, N. V.
name: Zatsepin, V. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: One of the main results of the ATIC (Advanced Thin Ionization Calorimeter) experiment is a collection of energy spectra of abundant cosmic-ray nuclei: protons, He, C, O, Ne, Mg, Si, Fe measured in terms of energy per particle in the energy range from 50 GeV to tens of teraelectronvolts. In this paper, the ATIC energy spectra of abundant primary nuclei are back-propagated to the spectra in sources in terms of magnetic rigidity using a leaky-box approximation of three different GALPROP-based diffusion models of propagation that fit the latest B/C data of the AMS-02 experiment. It is shown that the results of a comparison of the slopes of the spectra in sources are weakly model dependent; therefore the differences of spectral indices are reliable data. A regular growth of the steepness of spectra in sources in the range of magnetic rigidity of 50--1350~GV is found for a charge range from helium to iron. This conclusion is statistically reliable with significance better than 3.2 standard deviations. The results are discussed and compared to the data of other modern experiments.
description: 8 pages, 11 figures
Protokollbuch Nr. 1
Creators: name: Spinnerei Atzenbach AG
Publisher: name: [s.n.]
Year: 1885

description: Darin: Übersicht der Inventurabschlüsse der Jahre 1849-1920 auf den letzten Seiten
description: Deutsch
description: Verzeichnung=Description=Inventaire 2014 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Sebastian Preher
Protokollbuch Nr. 2
Creators: name: Spinnerei Atzenbach AG
Publisher: name: [s.n.]
Year: 1894

description: Darin: Einzelne eingeklebte und lose Einlagen
description: Deutsch
description: Verzeichnung=Description=Inventaire 2022 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Martin Lüpold
Protokolle Verwaltungsrat (Originale)
Creators: name: Aluminium-Industrie-Aktiengesellschaft Chippis
Publisher: name: [s.n.]
Year: 1978

description: Deutsch
description: Verzeichnung=Description=Inventaire 24.11.2016 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert Martin Lüpold
Assessing the Impact of Maternal Physical Activity on Small Extracellular Vesicles and Placental Vascularization During Pregnancy
Creators: name: Mohammad, Shuhiba
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Placenta
Exercise
Physical activity
Extracellular Vesicles
Pregnancy

description: Physical activity (PA) reduces the risk for deleterious outcomes in both mother and fetus during pregnancy and improves health across the lifespan. How these benefits are bestowed remains poorly understood but may involve the placenta, the critical interface responsible for fetal growth and survival during pregnancy. This thesis first aims to determine whether small extracellular vesicles (sEVs), potential biological mediators of cell-to-cell communication, are released into circulation after acute exercise during pregnancy and how this compares in the non-pregnant state. Pregnant women were found to have greater circulating sEVs levels compared to non-pregnant controls after a moderate-intensity treadmill walk. Since exercise-associated sEVs are proposed to mediate tissue cross talk in response to exercise, exercise-associated sEVs were examined for their ability to influence trophoblasts (specialized placental cells) in vitro using the BeWo choriocarcinoma cell line. Exercise-associated sEVs from pregnant and non-pregnant women interacted with trophoblast-like cells but did not alter their proliferation, gene expression of angiogenic growth factors, or production of the pregnancy hormone, human chorionic gonadotropin. Finally, the relationship between differing intensities of maternal PA and fetoplacental vascular density in a cohort of healthy pregnant women followed prospectively from 24 weeks of gestation until term delivery. Using traditional histopathological point-counting techniques, there was no difference in the fetoplacental vascular density of individuals meeting or exceeding recommended 150 min of moderate-to-vigorous intensity PA. However, the analysis revealed unexpected associations between fetoplacental vascular density and lower intensities of PA, and sedentary time. Together, the work presented in this thesis highlight the potential for exercise-associated sEVs to communicate the benefits of PA to mother and fetus and the need to investigate the effects of varying PA intensities on placental vascular development.
Molecular Gas Kinematics and Star Formation Properties of the Strongly-Lensed Quasar Host Galaxy RXS J1131-1231
Creators: name: Leung, T. K. Daisy
name: Riechers, Dominik A.
name: Pavesi, Riccardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report observations of CO(J=2-1) and CO(J=3-2) line emission towards the quadruply-lensed quasar RXS J1131-1231 at z = 0.654 obtained using the Plateau de Bure Interferometer (PdBI) and the Combined Array for Research in Millimeter-wave Astronomy (CARMA). Our lens modeling shows that the asymmetry in the double-horned CO(J = 2-1) line profile is mainly a result of differential lensing, where the magnification factor varies from ~3 to ~9 across different kinematic components. The intrinsically symmetric line profile and a smooth source-plane velocity gradient suggest that the host galaxy is an extended rotating disk, with a CO size of R_CO~6 kpc and a dynamical mass of M_dyn~8x10^10 Msun. We also find a secondary CO-emitting source near RXS J1131-1231 whose location is consistent with the optically-faint companion reported in previous studies. The lensing-corrected molecular gas masses are M_gas = (1.4+/-0.3)x10^10 Msun and (2.0+/-0.1)x10^9 Msun for RXS J1131-1231 and the companion, respectively. We find a lensing-corrected stellar mass of M_* = (3+/-1)x10^10 Msun and a star formation rate of SFR_FIR = (120+/-63) Msun yr^-1 , corresponding to a specific SFR and star formation efficiency comparable to z~1 disk galaxies not hosting quasars. The implied gas mass fraction of ~18+/-4% is consistent with the previously-observed cosmic decline since z~2. We thus find no evidence for quenching of star formation in RXS J1131-1231. This agrees with our finding of an elevated MBH/Mbulge ratio of >0.27+0.11% -0.08 compared to the local value, suggesting that the bulk of its black hole mass is largely in place while its stellar bulge is still assembling.
description: 19 pages, 10 figures, 6 tables, to be appear in the ApJ
The photon PDF from high-mass Drell Yan data at the LHC using xFitter
Creators: name: Giuli, Francesco
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this contribution, we review the results of the recent paper "The photon PDF from high-mass Drell Yan data at the LHC" (arXiv:1701.08553), where a determination of the photon PDF from fits to recent ATLAS measurements of high-mass Drell-Yan dilepton production at centre-of-mass energy of 8 TeV is presented.
description: This document is a Proceeding of Science (PoS) regarding a talk I gave during the "25th International Workshop on Deep Inelastic Scattering and Related Topics" (Birmingham, UK). It includes 7 pages, 6 figures and 1 page of bibliography
Supplementary Materials.docx
Creators: name: Chen, Jun-Xiang
Publisher: name: figshare
Year: 2023
Subjects: Preventative health care

description: This data is an Online Supplemental Material of my research published in the Journal of Clinical Endocrinology & Metabolism, entitled “Association of Clinical Risk Factors and Novel Biomarkers with Age at Onset of Type 2 Diabetes”.
Management of Back Pain, 1996
Creators: name: Moffett, J. A Klaber
name: Keen, S.
Publisher: name: UK Data Service
Year: 1999

description: This project arose from changes to the guidelines concerning the treatment of acute low back pain which advocated an early resumption of normal physical activity and increased physical activity. It was felt that little was known about the relationship between low back pain and physical activity, or on the impact of that relationship on the promotion of increased levels of physical activity within a general practice population. The study sought to discover what were the factors that influence physical activity behaviour changes in individuals who, because of their low back pain, were referred to the trial by their GPs, and how were these factors associated with their individual perceptions, beliefs, attitudes and expectations regarding their low back pain.
Nonlinearity and pixel shifting effects in HXRG infrared detectors
Creators: name: Plazas, A. A.
name: Shapiro, C.
name: Smith, R.
name: Rhodes, J.
name: Huff, E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We study the nonlinearity (NL) in the conversion from charge to voltage in infrared detectors (HXRG) for use in precision astronomy. We present laboratory measurements of the NL function of a H2RG detector and discuss the accuracy to which it would need to be calibrated in future space missions to perform cosmological measurements through the weak gravitational lensing technique. In addition, we present an analysis of archival data from the infrared H1RG detector of the Wide Field Camera 3 in the Hubble Space Telescope that provides evidence consistent with the existence of a sensor effect analogous to the brighter-fatter effect found in Charge-Coupled Devices. We propose a model in which this effect could be understood as shifts in the effective pixel boundaries, and discuss prospects of laboratory measurements to fully characterize this effect.
description: Accepted for publication in the Journal of Instrumentation (JINST). Part of "Precision Astronomy with Fully Depleted CCDs" (Dec 1-2, 2016), Brookhaven National Laboratory, Upton, NY, USA
The large-N Yang-Mills S-matrix is ultraviolet finite, but the large-N QCD S-matrix is only renormalizable
Creators: name: Bochicchio, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: YM and QCD are known to be renormalizable, but not ultraviolet finite, order by order in perturbation theory. It is a fundamental question as to whether YM or QCD are ultraviolet finite, or only renormalizable, order by order in the large-N 't Hooft or Veneziano expansions. We demonstrate that Renormalization Group and Asymptotic Freedom imply that in 't Hooft large-N expansion the S-matrix in YM is ultraviolet finite, while in both 't Hooft and Veneziano large-N expansions the S-matrix in confining QCD with massless quarks is renormalizable but not ultraviolet finite. By the same argument it follows that the large-N $\mathcal{N}=1$ SUSY YM S-matrix is ultraviolet finite as well. Besides, we demonstrate that the correlators of local gauge-invariant operators, as opposed to the S-matrix, are renormalizable but in general not ultraviolet finite in the large-N 't Hooft and Veneziano expansions, neither in pure YM and $\mathcal{N}=1$ SUSY YM nor a fortiori in massless QCD. Moreover, we compute explicitly the counterterms that arise renormalizing the large-N 't Hooft and Veneziano expansions, by deriving in confining massless QCD-like theories a low-energy theorem of NSVZ type, that relates the log derivative with respect to the gauge coupling of a $k$-point correlator, or the log derivative with respect to the RG-invariant scale, to a $k+1$-point correlator with the insertion of $Tr F^2$ at zero momentum. Finally, we argue that similar results hold in the large-N limit of a vast class of confining QCD-like theories with massive matter fields, provided a renormalization scheme exists, as for example $\overline{MS}$, in which the beta function is independent on the masses. In particular, in both 't Hooft and Veneziano large-N expansions the S-matrix in confining massive QCD and massive $\mathcal{N}=1$ SUSY QCD is renormalizable but not ultraviolet finite.
description: 12 pages, latex
Impurity scattering and size quantization effects in a single graphene nanoflake
Creators: name: Tesch, Julia
name: Leicht, Philipp
name: Blumenschein, Felix
name: Gragnaniello, Luca
name: Bergvall, Anders
name: Löfwander, Tomas
name: Fonin, Mikhail
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By using Fourier-transform scanning tunneling spectroscopy we measure the interference patterns produced by the impurity scattering of confined Dirac quasiparticles in epitaxial graphene nanoflakes. Upon comparison of the experimental results with tight-binding calculations of realistic model flakes, we show that the characteristic features observed in the Fourier-transformed local density of states are related to scattering between different transverse modes (sub-bands) of a graphene nanoflake and allow direct insight into the electronic spectrum of graphene. We also observe a strong reduction of quasiparticle lifetime which is attributed to the interaction with the underlying substrate. In addition, we show that the distribution of the onsite energies at flower defects leads to an effectively broken pseudospin selection rule, where intravalley back-scattering is allowed.
description: 11 pages, 3 figures
Beyond Janus Geometry: Characterization of Flow Fields around Nonspherical Photocatalytic Microswimmers
Creators: name: Heckel, Sandra
name: Bilsing, Clemens
name: Wittmann, Martin
name: Gemming, Thomas
name: Büttner, Lars
name: Czarske, Jürgen
name: Simmchen, Juliane
Publisher: name: Weinheim : Wiley-VCH
Year: 2022
Subjects: subject: flow fields
subject: microswimmers
subject: particle tracking velocimetry
subject: photocatalysis
subject: 500
subject: 600
subject: 624

description: Catalytic microswimmers that move by a phoretic mechanism in response to a self-induced chemical gradient are often obtained by the design of spherical janus microparticles, which suffer from multi-step fabrication and low yields. Approaches that circumvent laborious multi-step fabrication include the exploitation of the possibility of nonuniform catalytic activity along the surface of irregular particle shapes, local excitation or intrinsic asymmetry. Unfortunately, the effects on the generation of motion remain poorly understood. In this work, single crystalline BiVO4 microswimmers are presented that rely on a strict inherent asymmetry of charge-carrier distribution under illumination. The origin of the asymmetrical flow pattern is elucidated because of the high spatial resolution of measured flow fields around pinned BiVO4 colloids. As a result the flow from oxidative to reductive particle sides is confirmed. Distribution of oxidation and reduction reactions suggests a dominant self-electrophoretic motion mechanism with a source quadrupole as the origin of the induced flows. It is shown that the symmetry of the flow fields is broken by self-shadowing of the particles and synthetic surface defects that impact the photocatalytic activity of the microswimmers. The results demonstrate the complexity of symmetry breaking in nonspherical microswimmers and emphasize the role of self-shadowing for photocatalytic microswimmers. The findings are leading the way toward understanding of propulsion mechanisms of phoretic colloids of various shapes.
Dissipative Vibrational Model for Chiral Recognition in Olfaction
Creators: name: Tirandaz, Arash
name: Ghahramani, Farhad Taher
name: Shafiee, Afshin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the olfactory discrimination of left- and right-handed enantiomers of chiral odorants based on the odorant-mediated electron transport from a donor to an acceptor of the olfactory receptors embodied in a biological environment. The chiral odorant is effectively described by an asymmetric double-well potential whose minima are associated to the left- and right-handed enantiomers. The introduced asymmetry is considered as an overall measure of chiral interactions. The biological environment is conveniently modeled as a bath of harmonic oscillators. The resulting Spin-Boson model is adapted by a polaron transformation to derive the corresponding Born-Markov master equation with which we obtain the elastic and inelastic electron tunneling rates. We show that the inelastic tunneling through left- and right-handed enantiomers occurs with different rates. The discrimination mechanism depends on the ratio of tunneling frequency to localization frequency.
description: 6 pages, 3 figures
Proper motions and structural parameters of the Galactic globular cluster M71
Creators: name: Cadelano, M.
name: Dalessandro, E.
name: Ferraro, F. R.
name: Miocchi, P.
name: Lanzoni, B.
name: Pallanca, C.
name: Massari, D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: By exploiting two ACS/HST datasets separated by a temporal baseline of ~7 years, we have determined the relative stellar proper motions (providing membership) and the absolute proper motion of the Galactic globular cluster M71. The absolute proper motion has been used to reconstruct the cluster orbit within a Galactic, three-component, axisymmetric potential. M71 turns out to be in a low latitude disk-like orbit inside the Galactic disk, further supporting the scenario in which it lost a significant fraction of its initial mass. Since large differential reddening is known to affect this system, we took advantage of near-infrared, ground-based observations to re-determine the cluster center and density profile from direct star counts. The new structural parameters turn out to be significantly different from the ones quoted in the literature. In particular, M71 has a core and a half-mass radii almost 50% larger than previously thought. Finally we estimate that the initial mass of M71 was likely one order of magnitude larger than its current value, thus helping to solve the discrepancy with the observed number of X-ray sources.
description: Accepted for publication in ApJ
Boosting the accuracy of multi-spectral image pan-sharpening by learning a deep residual network
Creators: name: Wei, Yancong
name: Yuan, Qiangqiang
name: Shen, Huanfeng
name: Zhang, Liangpei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In the field of fusing multi-spectral and panchromatic images (Pan-sharpening), the impressive effectiveness of deep neural networks has been recently employed to overcome the drawbacks of traditional linear models and boost the fusing accuracy. However, to the best of our knowledge, existing research works are mainly based on simple and flat networks with relatively shallow architecture, which severely limited their performances. In this paper, the concept of residual learning has been introduced to form a very deep convolutional neural network to make a full use of the high non-linearity of deep learning models. By both quantitative and visual assessments on a large number of high quality multi-spectral images from various sources, it has been supported that our proposed model is superior to all mainstream algorithms included in the comparison, and achieved the highest spatial-spectral unified accuracy.
description: 5 pages,5 figures, 1 table
Contractibility for Open Global Constraints
Creators: name: Maher, Michael J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Open forms of global constraints allow the addition of new variables to an argument during the execution of a constraint program. Such forms are needed for difficult constraint programming problems where problem construction and problem solving are interleaved, and fit naturally within constraint logic programming. However, in general, filtering that is sound for a global constraint can be unsound when the constraint is open. This paper provides a simple characterization, called contractibility, of the constraints where filtering remains sound when the constraint is open. With this characterization we can easily determine whether a constraint has this property or not. In the latter case, we can use it to derive a contractible approximation to the constraint. We demonstrate this work on both hard and soft constraints. In the process, we formulate two general classes of soft constraints.
description: Under consideration in Theory and Practice of Logic Programming (TPLP)
Effect of Silver Doping on the Superconducting and Structural Properties of YBCO Films Grown by PLD on Different Templates
Creators: name: Shipulin, Ilya A.
name: Thomas, Aleena Anna
name: Holleis, Sigrid
name: Eisterer, Michael
name: Nielsch, Kornelius
name: Hühne, Ruben
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: coated conductor
subject: epitaxy
subject: pulsed laser deposition
subject: superconductors
subject: thin films
subject: YBCO
subject: 600

description: We report the local structural and superconducting properties of undoped and Ag-doped YBa2Cu3O6+x (YBCO) films with a thickness of up to 1 µm prepared by pulsed laser deposition on SrTiO3 (STO) single crystals and on ion-beam-assisted deposition (IBAD) and rolling-assisted biaxially textured substrate (RABiTS)-based metal templates. X-ray diffraction demonstrates the high crystalline quality of the films on both single crystalline substrates and metal-based templates, respectively. Although there was only a slight decrease in Tc of up to 1.5 K for the Ag-doped YBCO films on all substrates, we found significant changes in their transport characteristics. The effect of the silver doping mainly depended on the concentration of silver, the type of substrate, and the temperature and magnetic field. In general, the greatest improvement in Jc over a wide range of magnetic fields and temperatures was observed for the 5%Ag-doped YBCO films on STO substrates, showing a significant increase compared to undoped films. Furthermore, a slight Jc improvement was observed for the 2%Ag-doped YBCO films on the RABiTS templates at temperatures below 65 K, whereas Jc decreased for the Ag-doped films on IBAD-MgO-based templates compared to undoped YBCO films. Using detailed electron microscopy studies, small changes in the local microstructure of the Ag-doped YBCO films were revealed; however, no clear correlation was found with the transport properties of the films.
Comparative Study of Onion-like Carbons Prepared from Different Synthesis Routes towards Li-Ion Capacitor Application
Creators: name: Permana, Antonius Dimas Chandra
name: Ding, Ling
name: Gonzalez-Martinez, Ignacio Guillermo
name: Hantusch, Martin
name: Nielsch, Kornelius
name: Mikhailova, Daria
name: Omar, Ahmad
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: onion-like carbon
subject: metal organic framework
subject: Li-ion capacitor
subject: high energy density
subject: high power density
subject: 620
subject: 530

description: Li-ion capacitors (LIC) have emerged as a promising hybrid energy storage system in response to increasing energy demands. However, to achieve excellent LIC performance at high rates, along with cycling stability, an alternative anode to graphite is needed. Porous high-surface-area carbons, such as onion-like carbons (OLCs), have been recently found to hold high potential as high-rate-capable LIC anodes. However, a systematic understanding of their synthesis route and morphology is lacking. In this study, OLCs prepared from self-made metal organic frameworks (MOFs) Fe-BTC and Fe-MIL100 by a simple pyrolysis method were compared to OLCs obtained via high-temperature annealing of nanodiamonds. The LICs with OLCs produced from Fe-BTC achieved a maximum energy density of 243 Wh kg−1 and a power density of 20,149 W kg−1. Furthermore, excellent capacitance retention of 78% after 10,000 cycles was demonstrated. LICs with MOF-derived OLCs surpassed the energy and power density of LICs with nanodiamond-derived OLCs. We determined the impact of the MOF precursor structure and morphology on the resulting OLC properties, as well as on the electrochemical performance. Thus, MOF-derived OLCs offer significant potential toward high-performance anode material for LICs, enabling control over structure and morphology, as well as easy scalability for industrial implementation.
Collinear parton distributions and the structure of the nucleon sea in a light-front meson-cloud model
Creators: name: Kofler, S.
name: Pasquini, B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The unpolarized, helicity and transversity parton distribution functions of the nucleon are studied within a convolution model where the bare nucleon is dressed by its virtual meson cloud. Using light-front time-ordered perturbation theory, the Fock states of the physical nucleon are expanded in a series involving a bare nucleon and two-particle, meson-baryon, states. The bare baryons and mesons are described with light-front wave functions (LFWFs) for the corresponding valence-parton components. Using a representation in terms of overlap of LFWFs, the role of the non-perturbative antiquark degrees of freedom and the valence quark contribution at the input scale of the model is discussed for the leading-twist collinear parton distributions. After introducing perturbative QCD effects through evolution to experimental scales, the results are compared with available data and phenomenological extractions. Predictions for the nucleon tensor charge are also presented, finding a very good agreement with recent phenomenological extractions.
description: 20 pages, 9 figures
Evidence for Different Disk Mass Distributions Between Early and Late-Type Be Stars in the BeSOS Survey
Creators: name: Arcos, C.
name: Jones, C. E.
name: Sigut, T. A. A.
name: Kanaan, S.
name: Curé, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The circumstellar disk density distributions for a sample of 63 Be southern stars from the BeSOS survey were found by modelling their H$α$ emission line profiles. These disk densities were used to compute disk masses and disk angular momenta for the sample. Average values for the disk mass are 3.4$\times$10$^{-9}$ and 9.5$\times$10$^{-10}$ $M_{\star}$ for early (B0-B3) and late (B4-B9) spectral types, respectively. We also find that the range of disk angular momentum relative to the star are between 150-200 and 100-150 $J_{\star}/M_{\star}$, again for early and late-type Be stars respectively. The distributions of the disk mass and disk angular momentum are different between early and late-type Be stars at a 1\% level of significance. Finally, we construct the disk mass distribution for the BeSOS sample as a function of spectral type and compare it to the predictions of stellar evolutionary models with rapid rotation. The observed disk masses are typically larger than the theoretical predictions, although the observed spread in disk masses is typically large.
Core–Shell Structures Prepared by Atomic Layer Deposition on GaAs Nanowires
Creators: name: Ursaki, Veaceslav V.
name: Lehmann, Sebastian
name: Zalamai, Victor V.
name: Morari, Vadim
name: Nielsch, Kornelius
name: Tiginyanu, Ion M.
name: Monaico, Eduard V.
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: anodization
subject: atomic layer deposition
subject: coaxial core–shell structures
subject: emission polarization
subject: nanowires
subject: photoluminescence spectroscopy
subject: 540

description: GaAs nanowire arrays have been prepared by anodization of GaAs substrates. The nanowires produced on (111)B GaAs substrates were found to be oriented predominantly perpendicular to the substrate surface. The prepared nanowire arrays have been coated with thin ZnO or TiO2 layers by means of thermal atomic layer deposition (ALD), thus coaxial core–shell hybrid structures are being fabricated. The hybrid structures have been characterized by scanning electron microscopy (SEM) for the morphology investigations, by Energy Dispersive X-ray (EDX) and X-ray diffraction (XRD) analysis for the composition and crystal structure assessment, and by photoluminescence (PL) spectroscopy for obtaining an insight on emission polarization related to different recombination channels in the prepared core–shell structures.
Additively manufactured AlSi10Mg lattices – Potential and limits of modelling as-designed structures
Creators: name: Gebhardt, Ulrike
name: Gustmann, Tobias
name: Giebeler, Lars
name: Hirsch, Franz
name: Hufenbach, Julia Kristin
name: Kästner, Markus
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2022
Subjects: subject: Additive manufacturing
subject: Al-based alloy
subject: Elastic–plastic material model
subject: Experimental characterisation
subject: Lattice structures
subject: Material characterisation
subject: 600
subject: 690

description: Additive manufacturing overcomes the restrictions of classical manufacturing methods and enables the production of near-net-shaped, complex geometries. In that context, lattice structures are of high interest due to their superior weight reduction potential. AlSi10Mg is a well-known alloy for additive manufacturing and well suited for such applications due to its high strength to material density ratio. It has been selected in this study for producing bulk material and complex geometries of a strut-based lattice type (rhombic dodecahedron). A detailed characterisation of as-built and heat-treated specimens has been conducted including microstructural analyses, identification of imperfections and rigorous mechanical testing under different load conditions. An isotropic elastic–plastic material model is deduced on the basis of tension test results of bulk material test specimens. Performed experiments under compression, shear, torsion and tension load are compared to their virtual equivalents. With the help of numerical modelling, the overall structural behaviour was simulated using the detailed lattice geometry and was successfully predicted by the presented numerical models. The discussion of the limits of this approach aims to evaluate the potential of the numerical assessment in the modelling of the properties for novel lightweight structures.
Sensitivity of Helioseismic Measurements of Normal-mode Coupling to Flows and Sound-speed Perturbations
Creators: name: Hanasoge, Shravan M.
name: Woodard, Martin
name: Antia, H. M.
name: Gizon, Laurent
name: Sreenivasan, Katepalli R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In this article, we derive and compute the sensitivity of measurements of coupling between normal modes of oscillation in the Sun to underlying flows. The theory is based on first-Born perturbation theory, and the analysis is carried out using the formalism described by \citet{lavely92}. Albeit tedious, we detail the derivation and compute the sensitivity of specific pairs of coupled normal modes to anomalies in the interior. Indeed, these kernels are critical for the accurate inference of convective flow amplitudes and large-scale circulations in the solar interior. We resolve some inconsistencies in the derivation of \citet{lavely92} and reformulate the fluid-continuity condition. We also derive and compute sound-speed kernels, paving the way for inverting for thermal anomalies alongside flows.
description: 24 pages, 8 Figures; MNRAS
Direct laser printing of chiral plasmonic nanojets by vortex beams
Creators: name: Syubaev, Sergey
name: Zhizhchenko, Alexey
name: Porfirev, Alexey
name: Pustovalov, Evgeniy
name: Vitrik, Oleg
name: Kulchin, Yuri
name: Khonina, Svetlana
name: Kudryashov, Sergey
name: Kuchmizhak, Aleksandr
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Donut-shaped laser radiation, carrying orbital angular momentum, namely optical vortex, recently was shown to provide vectorial mass transfer, twisting transiently molten material and producing chiral micro-scale structures on surfaces of different bulk materials upon their resolidification. In this paper, we show for the first time that nanosecond laser vortices can produce chiral nanoneedles (nanojets) of variable size on thin films of such plasmonic materials, as silver and gold films, covering thermally insulating substrates. Main geometric parameters of the produced chiral nanojets, such as height and aspect ratio, were shown to be tunable in a wide range by varying metal film thickness, supporting substrates, and the optical size of the vortex beam. Donut-shaped vortex nanosecond laser pulses, carrying two vortices with opposite handedness, were demonstrated to produce two chiral nanojets twisted in opposite directions. The results provide new important insights into fundamental physics of the vectorial laser-beam assisted mass transfer in metal films and demonstrate the great potential of this technique for fast easy-to-implement fabrication of chiral plasmonic nanostructures.
description: 7 pages, 4 figures