cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rosa omissa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. omissa X vosagiaca - 3: Clèbe (Val de Nendaz) (Christ 1883 in herb. Bot. Anstalt Basel).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Hecke Relations, Cosets and the Classification of 2d RCFTs
Creators: name: Duan, Zhihao
name: Lee, Kimyeong
name: Sun, Kaiwen
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We systemically study the Hecke relations and the $c=8k$ coset relations among 2d rational conformal field theories (RCFTs) with up to seven characters. We propose that the characters of any 2d RCFT -- unitary or non-unitary -- satisfying a holomorphic modular linear differential equation (MLDE) can be realized as either a Hecke image or the coset of a Hecke image with respect to a $c=8k$ theory. Benefited from the recent results on holomorphic modular bootstrap, we check this proposal for all admissible theories with up to five characters. We also find many new interesting Hecke relations. For example, the characters of WZW models $(E_{6})_2,(E_7)_2,(E_{7\frac12})_2$ can be realized as the Hecke images $\mathsf{T}_{13},\mathsf{T}_{19},\mathsf{T}_{19}$ of Virasoro minimal models $M_{\rm sub}(7,6),M(5,4),M_{\rm eff}(13,2)$ respectively. Besides, we find the characters associated to the second largest Fisher group $Fi_{23}$ and the Harada-Norton group $HN$ can be realized as the Hecke images $\mathsf{T}_{23},\mathsf{T}_{19}$ of the product theories $M_{\rm eff}(5,2)\otimes M_{\rm eff}(7,2)$ and $M_{\rm eff}(7,2)^{\otimes 2}$ respectively. Mathematically, our study provides a great many interesting examples of vector-valued modular functions up to rank seven.
Differentielle Struktur-Aktivitätsrelation der Guanylatzyklase-C aktivierenden Peptidhormone Guanylin und Uroguanylin
Creators: name: Schulz, Axel
Publisher: name: Hannover : Universität Hannover
Year: 2000
Subjects: subject: Guanylyl cyclase C
subject: peptides
subject: structure-activity-relationship
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Superstatistical approach of the anomalous exponent for scaled Brownian motion
Creators: name: Santos, M. A. F. dos
name: Junior, L. Menon
name: Cius, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Anomalous diffusion phenomenon is an intriguing process that tracer diffusion presents in numerous complex systems. Current experimental and theoretical investigations have reported the emergence of random diffusivity scenarios accompanied by the heterogeneity of the $α$-anomalous diffusion exponents. In this framework, we investigate a heterogeneous ensemble of tracers governed by scaled Brownian motion (sBm). The heterogeneous features are considered on anomalous diffusion exponent and diffusivity. To analyse such systems, we introduce the truncated-Gaussian and truncated chi-squared distributions for anomalous exponents in the superstatistical framework. We also discuss the role of different temporal scales in sBm for our model. Furthermore, we investigate the effects of coupling between diffusivity and anomalous exponent on superstatistics of sBm. The investigation provides a thorough analysis of simulation and analytical results.
COASTAL ACT: ADCIRC-WW3 Flexible coupling through NEMS/NUOPC
Creators: name: Moghimi, Saeed
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: NEMS/NUOPC caps development
NSEModel NEMS App (Name Storm Event Model)
Executable
Configuration
Coupled run pre-processing package
Post-processing package 
NSEM cases:
Ike, 2008
National Water Model coupling
Summary
HeFDI - Data Stewards
Creators: name: Dworschak, Nina
name: Dähne, Judith
Publisher: name: Zenodo
Year: 2020
Subjects: HeFDI
Hessiche Forschungsdateninfrastrukturen
Data Steward
Forschungsdaten
Forschungsdatenmanagement
FDM
HeFDI-Plenary

description: Poster zu Data Stewards in HeFDI - Hesssiche Forschungsdateninfrastrukturen, präsentiert auf dem HeFDI-Plenary 2020.
The Kinetic Energy of PAH Dication and Trication Dissociation Determined by Recoil-Frame Covariance Map Imaging
Creators: name: Lee, Jason W. L.
name: Tikhonov, Denis S.
name: Allum, Felix
name: Boll, Rebecca
name: Chopra, Pragya
name: Erk, Benjamin
name: Gruet, Sebastian
name: He, Lanhai
name: Heathcote, David
name: Kazemi, Mehdi M.
name: Lahl, Jan
name: Lemmens, Alexander K.
name: Loru, Donatella
name: Maclot, Sylvain
name: Mason, Robert
name: Müller, Erland
name: Mullins, Terry
name: Passow, Christopher
name: Peschel, Jasper
name: Ramm, Daniel
name: Steber, Amanda L.
name: Bari, Sadia
name: Brouard, Mark
name: Burt, Michael
name: Küpper, Jochen
name: Eng-Johnsson, Per
name: Rijs, Anouk M.
name: Rolles, Daniel
name: Vallance, Claire
name: Manschwetus, Bastian
name: Schnell, Melanie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigated the dissociation of dications and trications of three polycyclic aromatic hydrocarbons (PAHs), fluorene, phenanthrene, and pyrene. PAHs are a family of molecules ubiquitous in space and involved in much of the chemistry of the interstellar medium. In our experiments, ions are formed by interaction with 30.3 nm extreme ultraviolet (XUV) photons, and their velocity map images are recorded using a PImMS2 multi-mass imaging sensor. Application of recoil-frame covariance analysis allows the total kinetic energy release (TKER) associated with multiple fragmentation channels to be determined to high precision, ranging 1.94-2.60 eV and 2.95-5.29 eV for the dications and trications, respectively. Experimental measurements are supported by Born-Oppenheimer molecular dynamics (BOMD) simulations.
Ab initio theory of electron-phonon mediated ultrafast spin relaxation of laser-excited hot electrons in transition-metal ferromagnets
Creators: name: Carva, K.
name: Battiato, M.
name: Legut, D.
name: Oppeneer, P. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a computational theoretical investigation of electron spin-flip scattering induced by the electron-phonon interaction in the transition-metal ferromagnets bcc Fe, fcc Co and fcc Ni. The Elliott-Yafet electron-phonon spin-flip scattering is computed from first-principles, employing a generalized spin-flip Eliashberg function as well as ab initio computed phonon dispersions. Aiming at investigating the amount of electron-phonon mediated demagnetization in femtosecond laser-excited ferromagnets, the formalism is extended to treat laser-created thermalized as well as nonequilibrium, nonthermal hot electron distributions. Using the developed formalism we compute the phonon-induced spin lifetimes of hot electrons in Fe, Co, and Ni. The electron-phonon mediated demagnetization rate is evaluated for laser-created thermalized and nonequilibrium electron distributions. Nonthermal distributions are found to lead to a stronger demagnetization rate than hot, thermalized distributions, yet their demagnetizing effect is not enough to explain the experimentally observed demagnetization occurring in the subpicosecond regime.
description: 14 pages, 8 figures, to appear in PRB
title: Paul Clemen (Hrsg.), Die Kunstdenkmäler der Rheinprovinz. Dritter Band. III. Die Kunstdenkmäler des Kreises Neuss
Creators: name: Wiedemann, Alfred
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Die Kunstdenkmäler der Rheinprovinz. Dritter Band. III. Die Kunstdenkmäler des Kreises Neuss. Im Aufträge des Provinzialverbandes der Rheinprovinz herausgegeben von Paul Clemen. Düsseldorf. L. Schwann. 1895. Gr. 8, VI und 127 S.
Molecular physiology of chilling tolerance of Petunia hybrida
Creators: name: Bauerfeind, Martin Andreas
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Chilling tolerance
subject: Petunia hybrida
subject: stress
subject: Kühletoleranz
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
title: Philipp Kasimir von Heintz, Das ehemalige Fürstenthum Pfalz-Zweibrücken während des dreissigjährigen Krieges, Kaiserslautern 1895
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Ph. K. Heintz, Das ehemalige Fürstenthum Pfalz-Zweibrücken während des dreissigjährigen Krieges. 2. Aufl. Kaiserslautern. Crusius. 1895. 8. IX u. 131 S.
Bubble nucleation and quantum initial conditions in classical statistical simulations
Creators: name: Tranberg, Anders
name: Ungersbäck, Gerhard
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Classical-statistical lattice simulations provide a useful approximation to out-of-equilibrium quantum field theory, but only for systems exhibiting large occupation numbers, and only for phenomena that are not intrinsically quantum mechanical in nature. In certain special circumstances, it can be appropriate to initialize such real-time simulations with quantum-like zero-point fluctuations. We will revisit these points, and investigate reports that quantum bubble nucleation rates in 1+1 dimensions can be computed through the classical evolution of such a quantum-like initial condition. We find that although intriguing, the reported numerical agreement between classical-statistical simulations and the quantum nucleation rate in 1+1 dimensions is a coincidence, which is not specific to this choice of initialisation, is parameter and lattice cut-off dependent and disappears as the number of space-dimensions increases from 1+1 to 2+1
description: 27 pages, 19 figures
Funktionalisierung von Polystyren-Divinylbenzen-Harzen zur selektiven Festphasenextraktion von Aromastoffen
Creators: name: Gehrke, Maik
Publisher: name: Hannover : Universität Hannover
Year: 2000
Subjects: subject: Functionalized polystyrene
subject: solid phase extraction
subject: aroma compounds
subject: selectivity
subject: electric dipole moment
subject: Adsorption
subject: Aromastoff
subject: Ausgangsmaterial
subject: Binäres Gemisch
subject: Divinylbenzol
subject: Elektrisches Dipolmoment
subject: Fest-Flüssig-Extraktion
subject: Funktionalisierung
subject: Kohlenwasserstoffe
subject: Kunstharzionenaustauscher
subject: Monoterpene
subject: Polystyrol
subject: Selektivität
subject: Terpene
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Stability of multiquarks in an improved flip-flop model of confinement
Creators: name: Vijande, J.
name: Valcarce, A.
name: Richard, J. -M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review some recent studies on the string model of confinement inspired by the strong-coupling regime of QCD and its application to exotic multiquark configurations. This includes two quarks and two antiquarks, four quarks and one antiquark, six quarks, and three quarks and three antiquarks with a careful treatment of the corresponding few-body problem.
description: Presented at the 20th International IUPAP Conference on Few-Body Problems in Physics, 20 - 25 August, 2012, Fukuoka, Japan
title: Michael Baales, Der spätpaläolithische Fundplatz Kettig. Untersuchungen zur Siedlungsarchäologie der Federmesser-Gruppen am Mittelrhein
Creators: name: Bolus, Michael
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Michael Baales, Der spätpaläolithische Fundplatz Kettig. Untersuchungen zur Siedlungsarchäologie der Federmesser-Gruppen am Mittelrhein. Mit Beiträgen von F. Bittmann, A. Ikinger, H. Kierdorf, J. Krey, D. Mania, A. Pawlik und J. Tinnes. Monographien des Römisch-Germanischen Zentralmuseums Mainz Band 51. Habelt, Bonn 2002. XI und 300 Seiten, 153 Abbildungen, 34 Tabellen, 31 Tafeln, 4 Beilagen.
Celestial Yang-Mills Amplitudes and D=4 Conformal Blocks
Creators: name: Fan, Wei
name: Fotopoulos, Angelos
name: Stieberger, Stephan
name: Taylor, Tomasz R.
name: Zhu, Bin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the properties of recently constructed "single-valued" celestial four-gluon amplitudes. We show that the amplitude factorizes into the "current" part and the "scalar" part. The current factor is given by the group-dependent part of the Wess-Zumino-Witten correlator of four holomorphic currents with a non-vanishing level of Kač-Moody algebra. The scalar factor can be expressed in terms of a complex integral of the Koba-Nielsen form, similar to the integrals describing four-point correlators in Coulomb gas models and, more generally, in the infinite central charge limit of Liouville theory. The scalar part can be also obtained by a dimensional reduction of a single D=4 conformal block and the shadow block from Minkowski space to the celestial sphere.
description: 16 pages
The Kitaev-Ising model, Transition between topological and ferromagnetic order
Creators: name: Karimipour, Vahid
name: Memarzadeh, Laleh
name: Zarkeshian, Parisa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Kitaev-Ising model, where ferromagnetic Ising interactions are added to the Kitaev model on a lattice. This model has two phases which are characterized by topological and ferromagnetic order. Transitions between these two kinds of order are then studied on a quasi-one dimensional system, a ladder, and on a two dimensional periodic lattice, a torus. By exactly mapping the quasi-one dimensional case to an anisotropic XY chain we show that the transition occurs at zero $λ$ where $λ$ is the strength of the ferromagnetic coupling. In the two dimensional case the model is mapped to a 2D Ising model in transverse field, where it shows a transition at finite value of $λ$. A mean field treatment reveals the qualitative character of the transition and an approximate value for the transition point. Furthermore with perturbative calculation, we show that expectation value of Wilson loops behave as expected in the topological and ferromagnetic phases.
description: 17 pages, 7 figures, Latex, references added
Analogien zu gruppentheoretischen Begriffsbildungen in der Theorie schiefaffiner Räume
Creators: name: Kahlen, Katrin
Publisher: name: Hannover : Universität Hannover
Year: 2000
Subjects: subject: Non-commutative geometry
subject: skewaffine spaces
subject: analogies to group-theoretical statements
subject: Gruppentheorie
subject: Nichtkommutative Geometrie
subject: Online-Publikation
subject: Schiefaffiner Raum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
title: Franz J. Gietz, Spätes Jungpaläolithikum und Mesolithikum in der Burghöhle Dietfurt
Creators: name: Beck, Marcus
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Franz J. Gietz, Spätes Jungpaläolithikum und Mesolithikum in der Burghöhle Dietfurt. Materialhefte zur Archäologie in Baden-Württemberg, Heft 60. Konrad Theiss Verlag, Stuttgart 2001. 160 Seiten, 73 Abbildungen, 45 Tabellen, 42 Tafeln.
Angular Correlation Functions for Models with Logarithmic Oscillations
Creators: name: Jackson, Mark G.
name: Wandelt, Ben
name: Bouchet, François
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: There exist several theoretical motivations for primordial correlation functions (such as the power spectrum) to contain oscillations as a logarithmic function of comoving momentum k. While these features are commonly searched for in k-space, an alternative is to use angular space; that is, search for correlations between the directional vectors of observation. We develop tools to efficiently compute the angular correlations based on a stationary phase approximation and examine several example oscillations in the primordial power spectrum, bispectrum, and trispectrum. We find that logarithmically-periodic oscillations are essentially featureless and therefore difficult to detect using the standard correlator, though others might be feasible.
description: 13 pages, 11 figures
title: Hermanfrid Schubart, Volker Pingel und Oswaldo Arteaga, Fuente Álamo 1. Die Grabungen von 1977 bis 1991 in einer bronzezeitlichen Höhensiedlung Andalusiens
Creators: name: Gallay, Gretel
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Hermanfrid Schubart, Volker Pingel und Oswaldo Arteaga, Fuente Álamo 1. Die Grabungen von 1977 bis 1991 in einer bronzezeitlichen Höhensiedlung Andalusiens. Mit Beiträgen von H.-G. Bachmann, P. Cressier, L. Delgado Castilla, A. von den Driesch, I. Flores Escobosa, M. Garcia Sanchez, M. Runter, C. Liesau, H. Manhart, R. Pozo Martin, I. Ma Rueda Cruz, H. Siret, L. Siret und H.-P. Stika. Madrider Beiträge, Band 25. Verlag Philipp von Zabern, Mainz 2001. 461 Seiten, 149 Abbildungen, 52 Tabellen, 42 Tafeln und 14 Beilagen.
title: Dietrich Berges, Antike Siegel und Glasgemmen der Sammlung Maxwell Sommerville im University of Pennsylvania Museum of Archaeology and Anthropology, Philadelphia PA
Creators: name: Weiß, Carina
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Dietrich Berges, Antike Siegel und Glasgemmen der Sammlung Maxwell Sommerville im University of Pennsylvania Museum of Archaeology and Anthropology, Philadelphia PA. Verlag Philipp von Zabern, Mainz 2002. V und 78 Seiten, 3 Abbildungen, 70 Tafeln.
title: Roger Ling, Stuccowork and painting in Roman Italy
Creators: name: Mielsch, Harald
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Roger Ling, Stuccowork and painting in Roman Italy. Variorum Collected Studies 649. Asgate Publishing, Aldershot 1999. 350 Seiten, 38 Abbildungen und 78 Tafeln.
From tree- to loop-simplicity in affine Toda theories I: Landau singularities and their subleading coefficients
Creators: name: Dorey, Patrick
name: Polvara, Davide
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Various features of the even order poles appearing in the S-matrices of simply-laced affine Toda field theories are analysed in some detail. In particular, the coefficients of first- and second-order singularities appearing in the Laurent expansion of the S-matrix around a general $2N^{\rm th}$ order pole are derived in a universal way using perturbation theory at one loop. We show how to cut loop diagrams contributing to the pole into particular products of tree-level graphs that depend on the on-shell geometry of the loop; in this way, we recover the coefficients of the Laurent expansion around the pole exploiting tree-level integrability properties of the theory. The analysis is independent of the particular simply-laced theory considered, and all the results agree with those obtained in the conjectured bootstrapped S-matrices of the ADE series of theories.
description: 28 pages, 9 figures
Rosa pendulina
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. pendulina X pomifera Cat. 104. l: Planajeur (Coquoz); Finhaut (Burnat, Wilczek);Le Chätelard (Coquoz). - 2: Jeur-Brûleé ob Branson (Gams); bei Leukerbad wieder 1926 von Mariétan festgestellt. - 3: Bourg-St-Pierre (Schmidely); Valsorey (Gaillard); St-Luc (Mantz); Ayer (Mariétan1932); Grächen (Mme M. Rambert-Piccard 1921); Bodmen bei Zermatt (Thellung 1919). - 4:Im Binntal und im Goms auch neuerdings gesammelt (Binz: Binn und Münster; Wilczek:Binn).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Critical exponents and irreversibility lines of La$_{0.9}$Sr$_{0.1}$CoO$_3$ single crystal
Creators: name: Khan, N.
name: Midya, A.
name: Mandal, P.
name: Prabhakaran, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied the dynamic and static critical behavior of spin glass transition in insulating La$_{0.9}$Sr$_{0.1}$CoO$_3$ single crystal by ac susceptibility and dc magnetization measurements in the vicinity of its freezing temperature ($T_f$). The dynamic scaling analysis of the frequency dependence of ac susceptibility data yields the characteristic time constant $τ_{0}$=1.6(9)$\times10^{-12}$ s, the dynamic critical exponent $zν$=9.5(2), and a frequency dependence factor $K$=$Δ$$T_{f}/T_{f}$($Δ$$log$$f$)=0.017, indicating that the sample enters into a canonical spin-glass phase below $T_{f}$=34.8(2) K. The scaling analysis of non-linear magnetization in the vicinity of $T_{f}$ through the static scaling hypothesis yields critical exponents $β$=0.89(1) and $γ$=2.9(1), which match well with that observed for well known three-dimensional (3D) Heisenberg spin glasses. From the longitudinal component of zero-field-cooled and field-cooled magnetization measurement we have constructed the $H-T$ phase diagram which represents the field evolution of two characteristic temperatures: the upper one, $T_{w}(H)$, indicates the onset of spin freezing in a uniform external field $H$, while the lower one, $T_{s}(H)$, marks the onset of strong irreversibility of the frozen state. The low field $T_{s}(H)$ follows the critical line suggested by d'Almeida-Thouless model for canonical spin glass, whereas the $T_{w}(H)$ exhibits a reentrant behavior with a maximum in the $T_{w}(H)$ at a nonzero field above which it follows the Gabay-Toulouse (GT) critical line which is a characteristic of Heisenberg spin glass. The re-entrant behavior of the GT line resembles that predicted theoretically for $n$-component vector spin glasses in the presence of a uniaxial anisotropy field.
description: 11 pages, 7 figures
title: Malcolm Todd (Hrsg.), A companion to Roman Britain
Creators: name: König, Ingemar
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Malcolm Todd (Hrsg.), A companion to Roman Britain. Blackwells Companions to British History. Blackwell, London 2004. 508 Seiten, 96 Abbildungen und Zeichnungen.
DoG-HiT: A novel VLBI Multiscale Imaging Approach
Creators: name: Müller, Hendrik
name: Lobanov, Andrei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Reconstructing images from very long baseline interferometry (VLBI) data with sparse sampling of the Fourier domain (uv-coverage) constitutes an ill-posed deconvolution problem. It requires application of robust algorithms maximizing the information extraction from all of the sampled spatial scales and minimizing the influence of the unsampled scales on image quality. We develop a new multiscale wavelet deconvolution algorithm DoG-HiT for imaging sparsely sampled interferometric data which combines the difference of Gaussian (DoG) wavelets and hard image thresholding (HiT). Based on DoG-HiT, we propose a multi-step imaging pipeline for analysis of interferometric data. DoG-HiT applies the compressed sensing approach to imaging by employing a flexible DoG wavelet dictionary which is designed to adapt smoothly to the uv-coverage. It uses closure properties as data fidelity terms only initially and perform non-convex, non-smooth optimization by an amplitude conserving and total flux conserving hard thresholding splitting. DoG-HiT calculates a multiresolution support as a side product. The final reconstruction is refined through self-calibration loops and imaging with amplitude and phase information applied for the multiresolution support only. We demonstrate the stability of DoG-HiT and benchmark its performance against image reconstructions made with CLEAN and Regularized Maximum-Likelihood (RML) methods using synthetic data. The comparison shows that DoG-HiT matches the superresolution achieved by the RML reconstructions and surpasses the sensitivity to extended emission reached by CLEAN. Application of regularized maximum likelihood methods outfitted with flexible multiscale wavelet dictionaries to imaging of interferometric data matches the performance of state-of-the art convex optimization imaging algorithms and requires fewer prior and user defined constraints.
description: 20 pages, 11 Figures, accepted for publication in A&A, the imaging software underlying this work will be made publicly available soon under the link https://github.com/hmuellergoe/mrbeam
Attachment and Relationship-Specific Identification
Creators: name: Crockett, Erin
name: McIntyre, Kevin
name: Stanton, Sarah C. E.
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Social Psychology
subject: Psychology
subject: FOS: Psychology
subject: relationship satisfaction
subject: relationship identification
subject: daily diary
subject: attachment

description: This preregistration contains the hypothesis and analytic plan document for a subproject investigating the links between attachment, relationship-specific identification, and relationship satisfaction.
CEPC Cost Model Study and Circumference Optimization
Creators: name: Wang, Dou
name: Gao, Jie
name: Ruan, Manqi
name: Li, Yuhui
name: Xu, Haocheng
name: Liu, Yudong
name: Li, Meng
name: Zhang, Yuan
name: Wang, Yiwei
name: Zhai, Jiyuan
name: Zhou, Zusheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The CEPC is a proposed high luminosity Higgs/Z factory, with the potential to be upgraded to top factory at center-of-mass energy of 360GeV. We perform an optimization study on the circumference of CEPC. We calculate the instant luminosity, the construction and operation cost for different circumferences. With respect to the total cost and average cost per particle, we conclude that the optimal circumference for the CEPC Higgs operation is 80 km. Taking into account of the Z pole operation, the potential high-energy upgrade of CEPC (top factory), the optimal circumference increased to 100 km. The long future proton-proton upgrade of CEPC (SPPC) also favors a larger circumference, and we conclude that 100 km is the global optimized circumference for this facility.
title: Lukas Clemens, Tempore Romanorum constructa. Zur Nutzung und Wahrnehmung antiker Überreste nördlich der Alpen während des Mittelalters
Creators: name: Strothmann, Jürgen
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Lukas Clemens, Tempore Romanorum constructa. Zur Nutzung und Wahrnehmung antiker Überreste nördlich der Alpen während des Mittelalters. Monographien zur Geschichte des Mittelalters, Band 50. Anton Hiersemann, Stuttgart 2003. X und 565 Seiten, 32 Abbildungen.
Page curve and symmetries
Creators: name: Lau, Pak Hang Chris
name: Noumi, Toshifumi
name: Takii, Yuhei
name: Tamaoka, Kotaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the quantum process of black hole evaporation and its implications for symmetries, we consider a qubit system with a random dynamics as a toy model of black hole. We compute its symmetry-resolved entropies and discuss its implications. We first consider the case where charges are conserved and compute the symmetry-resolved entropies. We derive a symmetry-resolved analogue of the Page curve. We then consider the case where symmetry is explicitly broken and charges are no longer conserved. It serves as a toy model for global symmetry breaking in black hole evaporation. Despite the simple framework, the symmetry-resolved entropies capture various interesting features during the analogous process of black hole evaporation in our qubit model.
description: 7 pages, 4 figures
Constraints on possible age spreads within young massive clusters in the Large Magellanic Cloud
Creators: name: Bastian, Nate
name: Silva-Villa, Esteban
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent studies have shown that the observed main-sequence turn-off (MSTO) in colour-magnitude diagrams of intermediate age (1-2 Gyr) clusters in the LMC are broader than would be nominally expected for a simple stellar population. This has led to the suggestion that such clusters may host multiple stellar populations, with age spreads of 100-500 Myr. However, at intermediate ages, spreads of this magnitude are difficult to discern and alternative explanations have been put forward (e.g., stellar rotation, interacting binaries). A prediction of the age-spread scenario is that younger clusters in the LMC, with similar masses and radii, should also show significant age spreads. In younger clusters (i.e., 40-300 Myr) such large age spreads should be readily apparent. We present an analysis of the colour-magnitude diagrams of two massive young clusters in the LMC (NGC 1856 and NGC 1866) and show that neither have such large age spreads, in fact, both are consistent with a single burst of star-formation (sigma(age) < 35 Myr). This leads us to conclude that either the intermediate age clusters in the LMC are somehow special or that the broadened MSTOs are not due to an age spread within the clusters.
description: 5 pages, 5 figures, MNRAS letters, in press
Non-Correlated Character Recognition using Artificial Neural Network
Creators: name: Dash, Tirtharaj
name: Nayak, Tanistha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper investigates a method of Handwritten English Character Recognition using Artificial Neural Network (ANN). This work has been done in offline Environment for non correlated characters, which do not possess any linear relationships among them. We test that whether the particular tested character belongs to a cluster or not. The implementation is carried out in Matlab environment and successfully tested. Fifty-two sets of English alphabets are used to train the ANN and test the network. The algorithms are tested with 26 capital letters and 26 small letters. The testing result showed that the proposed ANN based algorithm showed a maximum recognition rate of 85%.
description: appeared in: proceedings of National Conference on Dynamics and Prospects of Data Mining: Theory and Practices (DPDM)-2012; September 30, 2012, India; Publisher: OITS-BLS, Balasore Chapter; Proceeding ISBN: 987-93-81361-31-6, pp. 79-83
Anisotropic spin Hall and spin Nernst effects in bismuth semimetal
Creators: name: Guo, Guang-Yu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bismuth is an archetypal semimetal with gigantic spin-orbit coupling and it has been a major source material for the discovery of seminal phenomena in solid state physics for more than a century. In recent years, spin current transports in bismuth have also attracted considerable attention. In this paper, we theoretically study both spin Hall effect (SHE) and spin Nernst effect (SNE) in bismuth, based on relativistic band structure calculations. First, we find that there are three independent tensor elements of spin Hall conductivity (SHC) and spin Nernst conductivity (SNC), namely, $Z_{yx}^z$, $Z_{xz}^y$, and $Z_{zy}^x$. We calculate all the elements as a function of the Fermi energy. Second, we find that all SHC tensor elements are large, being $\sim$1000 ($\hbar$/e)(S/cm) and comparable to that of platinum. Furthermore, because of its low electrical conductivity, the corresponding spin Hall angles are gigantic, being $\sim$20%. Third, all the calculated SNC tensor elements are also pronounced, being comparable to that [$\sim$0.13 ($\hbar$/e)(A/m-K)] of gold, although they are several times smaller than platinum and $β$-Ta. Finally, in contrast to Pt and Au where $Z_{yx}^z = Z_{xz}^y = Z_{zy}^x$, the SHE and SNE in bismuth are strongly anisotropic, i.e., $Z_{yx}^z$, $Z_{xz}^y$ and $Z_{zy}^x$ differ significantly. Consequently, the Hall voltages due to the inverse SHE and SNE from the different conductivity elements could cancel each other and thus result in a small spin Hall angle if polycrystalline samples are used, which may explain why the measured spin Hall angles ranging from nearly 0 to 25% have been reported. We hope that these interesting findings would stimulate further spin current experiments on bismuth using highly oriented single crystal specimens.
description: 8 pages, 3 figures
Markov property of the Super-MAG Auroral Electrojet Indices
Creators: name: Benella, Simone
name: Consolini, Giuseppe
name: Stumpo, Mirko
name: Alberti, Tommaso
name: Gjerloev, Jesper W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The dynamics of the Earth's magnetosphere exhibits strongly fluctuating patterns as well as non-stationary and non-linear interactions, more pronounced during magnetospheric substorms and magnetic storms. This complex dynamics comprises both stochastic and deterministic features occurring at different time scales. Here we investigate the stochastic nature of the magnetospheric substorm dynamics by analysing the Markovian character of SuperMAG SME and SML geomagnetic indices. By performing the Chapman-Kolmogorov test, the SME/SML dynamics appears to satisfy the Markov condition at scales below 60 minutes. The Kramers-Moyal analysis instead highlights that a purely diffusive process is not representative of the magnetospheric dynamics, thus a model that includes both diffusion and Poisson-jump processes is used to reproduce the SME dynamical features at small scales. A discussion of the similarities and differences between this model and the SME properties is provided with a special emphasis on the metastability of the Earth's magnetospheric dynamics. Finally, the relevance of our results in the framework of Space Weather is also addressed.
Polarimetric studies of carbon stars at high Galactic latitude
Creators: name: Goswami, Aruna
name: Karinkuzhi, Drisya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Very little is known about the polarimetric properties of CH stars and carbon-enhanced metal-poor (CEMP) stars, although many of these objects have been studied in detail both photometrically and spectroscopically. We aim to derive polarimetric properties for a large sample of CEMP stars and CH stars to fill this gap. Multiband polarimetric observations were conducted in the first run for a sample of twenty-nine objects that include twenty-two CEMP and CH stars and seven polarization standards. Estimates of polarization were obtained using standard procedures of polarization calculation. Five objects in our sample do not show any significant polarization over the different colours of BVRI. For the rest of the objects the derived percentage polarization estimates are less than or equal to 1%, and they are found to exhibit random behaviour with respect to the inverse of the effective wavelength of observations. Polarization also does not seem to have any correlation with the effective temperatures of the stars. Our polarimetric estimates indicate there are circumstellar envelopes around these stars that are spherically symmetric or envelopes with little or no dust. In the plane of differential polarization, defined as the difference between the maximum and the minimum polarizations within the BVRI-bands, versus their visual magnitude, the stars appear to be confined to a narrow band. The implication of this trend for understanding the nature of the circumstellar environment remains to be determined and requires detailed modelling.
description: 10 pages, 2 figures, Accepted for publication in Astronomy and Astrophysics
Rosa pendulina
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R.pendulina X rubrifolia - l: Val d'Illiez (Mariétan). - 3:Bei Bourg-St-Pierre (Gaillard). - 4: Fiesch (Lehmann).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Re-categorization and Anti-immigrant attitudes
Creators: name: Sulaimon Kasali
name: Christine E Reyna, Ph.D.
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Sociology
subject: FOS: Sociology
subject: Social Psychology and Interaction
subject: Re-categorization
subject: Colorblind racial ideology
subject: Anti-immigrant attitudes
subject: Common in-group identity

description: White identity has been linked to prejudice (see Morrison et al., 2010; Reyna et al., 2022), and exposure to non-white individuals has been a consistent precursor to awareness of White identity (Knowles & Peng, 2005). The changing demographic of the United States would lead to more exposure to non-white individuals and may not be accepted positively by some White Americans. For example, Zou and Cheryan (2022) documented that White individuals were more likely to perceive threats and move out of a diversifying neighborhood. It can then be inferred that exposure to diversity may be a precursor to white identity that can strengthen the likelihood of identification and endorsement of anti-immigration policies. The effect of varying levels of exposure to diversity may also be a function of how majority members recategorize targets of prejudice (as having a shared identity vs a separate identity). Therefore, the purpose of this research is to examine the dynamic relationship that may exist between exposure to diversity, re-categorization into a shared identity, anti-immigration policies.
Non-Gaussianity from Excited Initial Inflationary States
Creators: name: Aravind, Aditya
name: Lorshbough, Dustin
name: Paban, Sonia
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study squeezed limit $f_{NL}$ generation by excited initial inflationary states in a model independent way. We restrict "excited" to mean a Bogoliubov transformation of the Bunch Davies state. We simultaneously impose the constraints that the observable power spectrum is nearly scale invariant over at least three decades and that the observable modes today be subhorizon at the beginning of inflation while not causing significant backreaction. We show that most excited initial inflationary states for single field inflationary models with negligible superhorizon evolution do not produce an observable squeezed limit $f_{NL}$. The case in which one mode is in the Bunch Davies state while the other two modes are in an excited state with $0.01
Inflection-point Inflation and Dark Matter Redux
Creators: name: Ghoshal, Anish
name: Lambiase, Gaetano
name: Pal, Supratik
name: Paul, Arnab
name: Porey, Shiladitya
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate for viable models of inflation that can successfully produce dark matter (DM) from inflaton decay process, satisfying all the constraints from Cosmic Microwave Background (CMB) and from some other observations. In particular, we analyze near-inflection-point small field inflationary scenario with non-thermal production of fermionic DM from the decaying inflaton field during the reheating era. To this end, we propose two different models of inflation with polynomial potential. The potential of Model I contains terms proportional to linear, quadratic, and quartic in inflaton; whereas in Model II, the potential contains only even power of inflaton and the highest term is sextic in inflaton. For both the models, we find out possible constraints on the model parameters which lead to proper inflationary parameters from CMB data with a very small tensor-to-scalar ratio, as expected from a small-field model. With the allowed parameter space from CMB, we then search for satisfactory relic abundance for DM, that can be produced from inflaton via reheating, to match with the present-day cold dark matter (CDM) relic density for the parameter spaces of the DM $χ$ mass and Yukawa couplings in the range $10^{-9} \gtrsim y_χ \gtrsim 10^{-15}$ and $10^3 \text{GeV} \lesssim m_χ \lesssim 10^9 \text{GeV}$. The DM relic is associated with the inflection-points in each model via maximum temperature reached in the early universe during its production. Finally, we find out allowed parameter space coming out of combined constraints from stability analysis for both SM Higgs and DM decays from inflaton as well as from BBN and Lyman-$α$ bounds.
description: 39 pages, 18 figures, accepted for publication in JHEP
HeFDI - Forschungsdatenmanagement an Hochschulen für angewandte Wissenschaften
Creators: name: Blum, Stefanie
name: Dähne, Judith
name: Langner, Patrick
name: Lipp, Robert
name: Péus, Timo
name: Schieberle, Andreas
Publisher: name: Zenodo
Year: 2020
Subjects: HeFDI
Hessische Forschungsdateninfrastrukturen
Forschungsdaten
Forschungsdatenmanagement
FDM
angewandte Forschung
Hochschulen
HeFDI-Plenary

description: Poster zu Forschungsdatenservices für die angewandte Forschung in HeFDI, präsentiert auf dem HeFDI-Plenary 2020
title: Attitudes Towards and Beliefs about Nutrition and Health Among a Random Sample of Adults in the Republic of Ireland and Northern Ireland
titleType: Other
Creators: name: Kearney, John
Publisher: name: TU Dublin
Year: 2001

description: Objectives: For effective healthy eating promotion, it is necessary to understand the attitudes towards and beliefs about nutrition of the general public. The objective of this study was to provide data on attitudes towards eating a healthy diet and the perceived need to alter eating habits from a random sample of adults in the Republic of Ireland and in Northern Ireland, using a self-administered questionnaire. Design: Cross-sectional survey using a self-administered attitudinal questionnaire on beliefs and attitudes to healthy eating. Setting: The survey was carried out between October 1997 and October 1999 in the Republic of Ireland and in Northern Ireland. Subjects: A randomly selected sample of 1256 adults from the Republic of Ireland and Northern Ireland completed the attitudinal questionnaire. Results: A majority of subjects (62%) perceived that they make conscious efforts to eat a healthy diet either most of the time or quite often, while just over half (52%) agreed that they do not need to make changes to their diet as it is healthy enough. Subjects most likely to make conscious efforts to try to eat a healthy diet were females, older subjects (51-64years) and those with the highest intakes of fruit and vegetable and lowest quartile of fat (%food energy). When self-assessed adequacy of fruit and vegetable was examined, two-thirds of the total sample felt they ate too little fruit while just one-third felt they ate too little vegetables. Conclusion: Results of the present study, in general, revealed good agreement between attitude and behaviour with respect to healthy eating. This suggests that people appear to be reasonably accurate at evaluating their own diet in terms of how healthy it is. In terms of the two food groups examined in this study, some optimistic bias was evident for vegetables but not for fruit. It may be useful therefore to assess attitudes and beliefs about healthy eating by way of examining attitudes to such food groups individually.
A bottom-up search for Lyman-continuum leakage in the Hubble Ultra Deep Field
Creators: name: Rivera-Thorsen, T. Emil
name: Hayes, Matthew
name: Melinder, Jens
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: Studies of the production and escape of Lyman Continuum from galaxies often rely on array of indirect observational tracers in preselection of candidate leakers. Aims: Here, we investigate how much ionizing radiation might be missed due to these selection criteria by completely removing them and performing a search selected purely from rest-frame LyC emission; and how that affects our estimates of the ionizing background. Methods: We invert the conventional method and perform a bottom-up search for Lyman-continuum leaking galaxies at redshifts $2 < z < 3.5$. Using archival data from HST and VLT/MUSE, we run source finding software on UV-filter HST images from the HUDF, and subject all detected sources to a series of tests to eliminate those that are inconsistent with being ionizing sources. Results: We find 6 new and one previously identified candidate leakers with absolute escape fractions ranging from 36% to 100%. Our filtering criteria eliminate one object previously reported as a candidate ionizing emitter in the literature, while we report non-detection in the rest frame Lyman continuum of two other previously reported sources. We find that our candidates make a contribution to the metagalactic ionizing field of $\log_{10}(ε_ν) = 25.32(+0.25)(-0.21)$ and $25.29(+0.27)(-0.22)$ erg/s/Hz/cMpc$^3$ for the full set of candidates and for the 4 strongest candidates only; both values are higher than but consistent with other recent figures in the literature. Conclusions: Our findings suggest that galaxies that do not meet the usual selection criteria may make a non-negligible contribution to the cosmic ionizing field. We recommend that similar searches be carried out on a larger scale in well-studied fields with both UV and large ancillary data coverage, for example in the full set of CANDELS fields.
description: 22 pages, 8 tables, 12 figures. This is the version accepted for publication in A&A. Contains only minor edits from v1
Fourier coefficients of vector-valued modular forms of dimension 2
Creators: name: Franc, Cameron
name: Mason, Geoffrey
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F30

description: We prove the following theorem. Suppose that $F=(f_1, f_2)$ is a 2-dimensional vector-valued modular form on $SL_2(Z)$ whose component functions $f_1, f_2$ have rational Fourier coefficients with bounded denominators. Then $f_1$ and $f_2$ are classical modular forms on a congruence subgroup of the modular group.