cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stochastic Fluctuations of Low-Energy Cosmic Rays and the Interpretation of Voyager Data
Creators: name: Phan, Vo Hong Minh
name: Schulze, Florian
name: Mertsch, Philipp
name: Recchia, Sarah
name: Gabici, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Data from the Voyager probes have provided us with the first measurement of cosmic ray intensities at MeV energies, an energy range which had previously not been explored. Simple extrapolations of models that fit data at GeV energies, e.g. from AMS-02, however, fail to reproduce the Voyager data in that the predicted intensities are too high. Oftentimes, this discrepancy is addressed by adding a break to the source spectrum or the diffusion coefficient in an ad hoc fashion, with a convincing physical explanation yet to be provided. Here, we argue that the discrete nature of cosmic ray sources, which is usually ignored, is instead a more likely explanation. We model the distribution of intensities expected from a statistical model of discrete sources and show that its expectation value is not representative, but has a spectral shape different from that for a typical configuration of sources. The Voyager proton and electron data are however compatible with the median of the intensity distribution. We stress that this model can explain the Voyager data without requiring any unphysical breaks.
description: 6 pages and 3 figures (supplemental material added)
Comment on "Constraining tectonic uplift and advection from the main drainage divide of a mountain belt" by C. He et al.
Creators: name: Feng, Shi
name: Xibin, Tan
Publisher: name: Zenodo
Year: 2021

description: He et al. (2021) combined numerical landscape evolution modeling and analytical solutions to demonstrate that mountain asymmetry, determined by the location of the main drainage divide, increases with increasing uplift gradient and advection velocity gradient, which promotes a better understanding of the tectonic influence for the main drainage divide. However, their analytical solution on the relationship between uplift gradient and normalized divide location (Fig. 2e in He et al., 2021) is only applicable when the conditions (the lower uplift rate of 0.5 mm/yr and mountain width of 50 km) are met. According to our numerical modeling, there is no stable relationship between uplift gradient and normalized divide location, when one of the above conditions is changed. Instead, there might be a correlation between the ratio of uplift rate on two edges and normalized divide location.
16O(e,e'p) reaction at large missing energy
Creators: name: Iodice, M.
name: Cisbani, E.
name: De Leo, R.
name: Frullani, S.
name: Garibaldi, F.
name: Groep, D. L.
name: Hesselink, W. H. A.
name: Jans, E.
name: Lapikas, L.
name: Onderwater, C. J. G.
name: Perrino, R.
name: Ryckebusch, J.
name: Starink, R.
name: Urciuoli, G. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We investigate the origin of the strength at large missing energies in electron-induced proton knockout reactions. For that purpose the reaction 16O(e,e'p) was studied at a central value omega=210 MeV of the energy transfer, and two values of the momentum transfer: q=300, 400 MeV/c, corresponding to the "dip region". Differential cross sections were determined in a large range of missing energy (Em=0-140 MeV) and proton emission angle (gamma_pq =0-110 deg), and compared to predictions of a model that includes nucleon-nucleon short-range correlations and two-body currents. It is observed that, in the kinematic domain covered by this experiment, the largest contribution to the cross section stems from two-body currents, while short-range correlations contribute a significant fraction
description: submitted to Physics Letters B
Mott phases and superfluid-insulator transition of dipolar spin-three bosons in an optical lattice: implications for Cr atoms
Creators: name: Bernier, Jean-Sebastien
name: Sengupta, K.
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Mott phases and superfluid-insulator transition of spin-three bosons in an optical lattice with an anisotropic two dimensional optical trap. We chart out the phase diagrams for Mott states with $n=1$ and $n=2$ atoms per lattice site. It is shown that the long-range dipolar interaction stabilizes a state where the chains of the ferromagnetically aligned spins run along the longer trap direction while the spin ordering is staggered between nearby chains, leading to an antiferromagnetic ordering along the shorter trap direction. We also obtain the mean-field phase boundary for the superfluid-insulator transition in these systems and study the nature of spin ordering in the superfluid state near the transition. We show that, inside the superfluid phase and near the superfluid-insulator phase boundary, the system undergoes a first order antiferromagnetic-ferromagnetic spin ordering transition. We discuss implications of our results for $^{52}$Cr atoms and suggest possible experiments to detect different phases in such systems.
description: 10 pages, 12 figures
title: Characterisation of the potato H2 resistance gene against Globodera pallida
Creators: name: Strachan, Shona
Publisher: name: University of St Andrews
Year: 2018

description: Multiple pathotypes of the potato cyst nematode Globodera pallida are present in British potato fields; however, no single resistance gene has been identified which confers resistance to all three pathotypes which are present in British fields (Pa1, Pa2/3). Fortunately, the H2 resistance gene has been identified from the wild potato diploid S. multidissectum which confers a high level of resistance to Pa1, and a lower level of resistance to Pa2/3. A segregating F1 population was generated using susceptible cultivar Picasso and resistant breeding line P55/7 and using an initial population of 154 progeny clones the H2 gene was verified to be a simplex dominant resistance gene. Bulked segregant analysis was undertaken with GenSeq and RenSeq enrichment to identify informative SNPs. Allele specific markers based on these informative SNPs were used to map the H2 gene to a 4.7Mb region of potato chromosome 5, using the dihaploid DM genome as a reference. Using an expanded F1 population of 656 clones in combination with designed markers allowed the region of interest to be narrowed to 0.8Mb at the distal end of chromosome 5. Analysis of this region identified two NB-LRR structure resistance genes which became putative candidates of the H2 gene. Gene enrichment was also undertaken in pathotype Pa1 of G. pallida in order to identify putative candidate effectors which initiate resistance gene mediated cell death. A comparative analysis between virulent Pa2/3 and avirulent Pa1 revealed 19,873 allelic differences, which were stringently filtered to 23 variants in 10 candidate genes. One candidate gene was cloned and functionally tested via vacuum infiltration in resistant P55/7 potato leaves to observe a potential hypersensitive response. The data from the presented work will aid future research into cloning the functional H2 gene.
Neutrino Masses, Leptonic Flavor Mixing and Muon $(g-2)$ in the Seesaw Model with the $U(1)^{}_{L^{}_μ-L^{}_τ}$ Gauge Symmetry
Creators: name: Zhou, Shun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The latest measurements of the anomalous muon magnetic moment $a^{}_μ\equiv (g^{}_μ- 2)/2$ show a $4.2σ$ discrepancy between the theoretical prediction of the Standard Model and the experimental observations. In order to account for such a discrepancy, we consider a possible extension of the type-(I+II) seesaw model for neutrino mass generation with a gauged $L^{}_μ- L^{}_τ$ symmetry. By explicitly constructing an economical model with only one extra scalar singlet, we demonstrate that the gauge symmetry $U(1)^{}_{L^{}_μ- L^{}_τ}$ and its spontaneous breaking are crucially important not only for explaining the muon $(g - 2)$ result but also for generating neutrino masses and leptonic flavor mixing. Various phenomenological implications and experimental constraints on the model parameters are also discussed.
description: 23 pages, 3 figures, 1 table, typos corrected, more references added, to appear in Chin. Phys. C
Multipole expansions for energy and momenta carried by gravitational waves
Creators: name: Ruiz, Milton
name: Alcubierre, Miguel
name: Nunez, Dario
name: Takahashi, Ryoji
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present expressions for the energy, linear momentum and angular momentum carried away from an isolated system by gravitational radiation based on spin-weighted spherical harmonics decomposition of the Weyl scalar $Ψ_4$. We also show that the expressions derived are equivalent to the common expressions obtained when using a framework based on perturbations of a Schwazschild background. The main idea is to collect together all the different expressions in a uniform and consistent way. The formulae presented here are directly applicable to the calculation of the radiated energy, linear momentum and angular momentum starting from the gravitational waveforms which are typically extracted from numerical simulations.
description: 12 pages. Typo fixed in equation (2.25)
Characterization of a double torsion pendulum used to detect spin-induced torque based on Beth's experiment
Creators: name: Yasuda, Runa
name: Hatakeyama, Atsushi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterized a double torsion pendulum system, including measurements of the photon-spin-induced torque. Our experimental strategy was similar to that used in Beth's experiment, which was performed in 1936 to measure photon-spin-induced torque using forced oscillation caused by polarization modulation of light incident on a suspended object. Through simple passive isolation of the suspended object from external vibration noise, the achieved torque sensitivity was 2 x 10^{-17} N m in a measurement time of 10^4 s, which is close to the thermal noise limit and one order smaller than the minimum torque measured in Beth's experiment. The observed spin-induced torque exerted on the light-absorbing optics is consistent with the angular momentum transfer of hbar per photon.
description: 13 pages, 6 figures. Major revision. Journal accepted manuscript
Tunnel e infrastrutture nel disegno del paesaggio
Creators: name: Bartolomei, Luigi
name: Bortolotti, Alberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014

description: IN_BO. Ricerche e progetti per il territorio, la città e l'architettura, Vol 5, No 7 (2014): TUNNEL INFRASTRUCTURES LANDSCAPE. Research and projects
Classical Prethermal Phases of Matter
Creators: name: Pizzi, Andrea
name: Nunnenkamp, Andreas
name: Knolle, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Systems subject to a high-frequency drive can spend an exponentially long time in a prethermal regime, in which novel phases of matter with no equilibrium counterpart can be realized. Due to the notorious computational challenges of quantum many-body systems, numerical investigations in this direction have remained limited to one spatial dimension, in which long-range interactions have been proven a necessity. Here, we show that prethermal non-equilibrium phases of matter are not restricted to the quantum domain. Studying the Hamiltonian dynamics of a large three-dimensional lattice of classical spins, we provide the first numerical proof of prethermal phases of matter in a system with short-range interactions. Concretely, we find higher-order as well as fractional discrete time crystals breaking the time-translational symmetry of the drive with unexpectedly large integer as well as fractional periods. Our work paves the way towards the exploration of novel prethermal phenomena by means of classical Hamiltonian dynamics with virtually no limitations on the system's geometry or size, and thus with direct implications for experiments.
description: 5+2 pages, 3+2 figures
Torsion, energy magnetization and thermal Hall effect
Creators: name: Huang, Ze-Min
name: Han, Bo
name: Sun, Xiao-Qi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the effective action of hydrostatic response to torsion in the absence of spin connections in gapped $\left(2+1\right)$-dimensional topological phases. In previous studies, a torsional Chern-Simons term with a temperature-squared ($T^2$) coefficient was proposed as an alternative action to describe thermal Hall effect with the idea of balancing the diffusion of heat by a torsional field. However, the question remains whether this action leads to local bulk thermal response which is not suppressed by the gap. In our hydrostatic effective action, we show that the $T^2$ bulk term is invariant under variations up to boundary terms considering the back reaction of the geometry on local temperature, which precisely describes the edge thermal current. Furthermore, there is no boundary diffeomorphism anomalies and bulk inflow thermal currents at equilibrium and therefore no edge-to-edge adiabatic thermal current pumping. These results are in consistent with exponentially suppressed thermal current for gapped phases.
description: Accepted version
Stephan Steingräber, Antike Felsgräber
Creators: name: Kelp, Ute
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Stephan Steingräber, Antike Felsgräber. Darmstadt: Philipp von Zabern 2015, 144 S., 162 überw. farb. Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Angela Ganter, Was die römische Welt zusammenhält. Patron-Klient-Verhältnisse zwischen Cicero und Cyprian
Creators: name: Köstner, Elena
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Angela Ganter, Was die römische Welt zusammenhält. Patron-Klient-Verhältnisse zwischen Cicero und Cyprian. KLIO-Beihefte, N.F. Bd. 26. Berlin/Boston: De Gruyter 2015, X + 433 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Nadja Kimmerle, Lucan und der Prinzipat. Inkonsistenz und unzuverlässiges Erzählen im 'Bellum Civile'
Creators: name: Blaschka, Karen
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Nadja Kimmerle, Lucan und der Prinzipat. Inkonsistenz und unzuverlässiges Erzählen im 'Bellum Civile'. Millennium-Studien Bd. 53. Berlin/Boston: De Gruyter 2015, IX + 344 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Pisces VII: Discovery of a possible satellite of Messier 33 in the DESI Legacy Imaging Surveys
Creators: name: Martinez-Delgado, David
name: Karim, Noushin
name: Charles, Emily J. E.
name: Boschin, Walter
name: Monelli, Matteo
name: Collins, Michelle L. M.
name: Donatiello, Giuseppe
name: Alfaro, Emilio J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report deep imaging observations with DOLoRes@TNG of an ultra-faint dwarf satellite candidate of the Triangulum galaxy (M33) found by visual inspection of the public imaging data release of the DESI Legacy Imaging Surveys. Pisces VII/Triangulum (Tri) III is found at a projected distance of 72 kpc from M33, and using the tip of the red giant branch method we estimate a distance of D=1.0 +0.3,-0.2 Mpc, meaning the galaxy could either be an isolated ultra-faint or the second known satellite of M33. We estimate an absolute magnitude of M_V=-6.1+/-0.2 if Pisces VII/Tri II is at the distance of M33, or as bright as M_V=-6.8+/-0.2 if the galaxy is isolated. At the isolated distance, it has a physical half-light radius of r_h=131+/-61 pc consistent with similarly faint galaxies around the Milky Way. As the tip of the red giant branch is sparsely populated, constraining a precision distance is not possible, but if Pisces VII/Tri III can be confirmed as a true satellite of M33 it is a significant finding. With only one potential satellite detected around M33 previously (Andromeda XXII/Tri I), it lacks a significant satellite population in stark contrast to the similarly massive Large Magellanic Cloud. The detection of more satellites in the outskirts of M33 could help to better illuminate if this discrepancy between expectation and observations is due to a poor understanding of the galaxy formation process, or if it is due to the low luminosity and surface brightness of the M33 satellite population which has thus far fallen below the detection limits of previous surveys. If it is truly isolated, it would be the faintest known field dwarf detected to date.
description: 10 pages, 9 figures, 2 tables, accepted for publication in MNRAS. This final version includes a moderate revision after the referee's comments and a correct title
László Horváth, Der „Neue Hypereides“. Textedition, Studien und Erläuterungen
Creators: name: Bernhardt, Jan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: László Horváth, Der „Neue Hypereides“. Textedition, Studien und Erläuterungen. Texte und Kommentare Bd. 50. Berlin/Boston: De Gruyter 2014, XIV + 205 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Fate of Kaluza-Klein Black Holes: Evaporation or Excision?
Creators: name: Murata, Keiju
name: Soda, Jiro
name: Kanno, Sugumi
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study evaporation process of black strings which are typical examples of Kaluza-Klein black holes. Taking into account the backreaction of the Hawking radiation, we deduce the evolution equation for the radion field. By solving the evolution equation, we find that the shape of the internal space is necked by the Hawking radiation and the amount of the deformation becomes large as the evaporation proceeds. Based on this analysis, we speculate that the Kaluza-Klein black holes would be excised from the Kaluza-Klein spacetime before the onset of the Gregory-Laflamme instability and therefore before the evaporation.
description: 6 pages, 4 figures
Marion Bolder-Boos, Ostia – Der Hafen Roms
Creators: name: Feuser, Stefan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Marion Bolder-Boos, Ostia – Der Hafen Roms. Zaberns Bildbände zur Archäologie. Darmstadt: Philipp von Zabern 2014, 144 S., 121 Farbabb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Asset-Based Biliteracy: Recentering Emergent Bilingual Students In Dual Language English Reading Instruction
Creators: name: Smith, Francesca
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 390108
subject: LOTE, ESL and TESOL curriculum and pedagogy
classificationCode: 470306
subject: English as a second language
classificationCode: 470310
subject: Iberian languages
classificationCode: 470402
subject: Child language acquisition

description: As gentrifying dual language (DL) schools in the United States increasingly attract students with linguistic, racial, and socioeconomic privilege, a key consideration is whether these schools are intentionally supporting the specific needs and assets of emergent bilingual (EB) students from Latinx families. This dissertation of practice examined how an asset-based early literacy intervention in a first grade English DL classroom could recenter EB students through both structured literacy instruction and parent partnership, using a funds of knowledge framework. The 11-week Student Intervention explored how a teacher could actively build upon EB students’ Spanish language and literacy competencies within small-group English reading instruction at the beginning of their formal bilingual education. Quantitative findings showed that explicitly grounding early English reading instruction in the transfer and non-transfer of Spanish literacy skills supported students’ progress toward grade-level expectations for English decoding and letter sound knowledge. The parallel Parent Intervention centered parent voices through qualitative interviews. Findings indicated that Spanish-speaking families expressed unique capacities to support biliteracy learning grounded in Science of Reading-based practices. The implications from this study direct DL educators to deepen collaboration towards biliteracy by continuing to explore and incorporate elements of cross-linguistic transfer and families’ funds of knowledge. Recommendations for student instruction, teacher professional development, family partnership, and research, within the context of early biliteracy, are discussed.
Christiane Nowak, Bestattungsrituale in Unteritalien vom 5. bis 4. Jh. v. Chr. Überlegungen zur sogenannten Samnitisierung Kampaniens
Creators: name: Donnellan, Lieve
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Christiane Nowak, Bestattungsrituale in Unteritalien vom 5. bis 4. Jh. v. Chr. Überlegungen zur sogenannten Samnitisierung Kampaniens. Italiká Bd. 3. Wiesbaden: Reichert Verlag 2014, 200 S., 26 farb. Abb., 72 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Marco Ladewig, Rom – Die antike Seerepublik. Untersuchungen zur Thalassokratie der 'res publica populi romani' von den Anfängen bis zur Begründung des Principat
Creators: name: Linke, Bernhard
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Marco Ladewig, Rom – Die antike Seerepublik. Untersuchungen zur Thalassokratie der 'res publica populi romani' von den Anfängen bis zur Begründung des Principat. Potsdamer Altertumswissenschaftliche Beiträge Bd. 48. Stuttgart: Franz Steiner 2014, 373 S., 17 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Power-suppressed effects in heavy quark fragmentation functions
Creators: name: Cacciari, Matteo
name: Nason, Paolo
name: Oleari, Carlo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This talk summarizes the results of a phenomenological analysis of heavy quark fragmentation data published by the CLEO and BELLE collaborations at \sqrt{s} = 10.6 GeV and by the LEP collaborations at \sqrt{s} = 91.2 GeV. Several theoretical ingredients are employed: next-to-leading order initial conditions, evolution and coefficient functions; soft-gluon resummation to next-to-leading-log accuracy; a next-to-leading order matching condition for the crossing of the bottom threshold in the evolution. Important initial-state electromagnetic radiation effects in the CLEO and BELLE data are also accounted for. We find that with reasonably simple choices of a non-perturbative correction to the fixed-order initial condition for the evolution, the data from CLEO and BELLE can be fitted with remarkable accuracy. The fitted fragmentation function, when evolved to LEP energies, does not however represent fairly the D* fragmentation spectrum measured by ALEPH. Large non-perturbative corrections to the coefficient functions of the meson spectrum are needed in order to reconcile CLEO/BELLE and ALEPH results.
description: Latex, 9 pages, talk given by M. Cacciari at FRIF workshop on first principles non-perturbative QCD of hadron jets, LPTHE, Paris, France, 12-14 Jan 2006
SAGE : A Monte Carlo Simulation Framework for Experiments with Germanium Detectors
Creators: name: She, Ze
name: Ma, Hao
name: Zeng, Weihe
name: Dai, Wenhan
name: Geng, Xinping
name: Normahmedov, Ofoq
name: Yang, Jingzhe
name: Zeng, Zhi
name: Yue, Qian
name: Cheng, Jianping
name: Li, Junli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A Geant4-based simulation framework for rare event searching experiments with germanium detectors named SAGE is presented with details. It is designed for simulating, assessing background distribution, and investigating the response of the germanium detectors. The SAGE framework incorporates its experiment-specific geometries and custom attributes, including the event generators, physics lists and output format, to satisfy various simulation objectives. Its docker image has been prepared for virtualizing and distributing the SAGE framework. Deployment of a Geant4-based simulation will be convenient under this docker image. The implemented geometries include p-type point contact and broad energy germanium detectors with environmental surroundings, and these hierarchical geometries can be easily extended. Users select these custom attributes via the JSON configuration files. The aforementioned attributes satisfy the simulation demands and make SAGE a generic and powerful simulation framework for the CDEX experiment.
description: 12 pages, 5 figures
What it means to be a docent : narratives of art gallery experiences
Creators: name: Duthie, Lesley
Publisher: name: University of British Columbia
Year: 2010

description: It is widely acknowledged that without volunteer guides, or docents, most museums and galleries would find it impossible to offer education programmes as they are known today. Docents work in the critical interface between visitors and works of art, yet often they are viewed as being passive, and often ineffective, transmitters of the gallery's educational message. The literature on gallery education emphasizes docent "management", or the methods used to recruit, train, and supervise docents. But gallery staff must consider the docent’s beliefs, values, and viewpoints about art, and about education, for improvement of education programmes to occur. This study describes, and analyzes, the docent’s perspective of gallery education programmes, and the extent to which docents are actively engaged in the ongoing process of learning to help others learn. In order to obtain their perspective, six docents in two art galleries were engaged in long, semi-structured, and repeated interviews. These interviews were audiotaped and transcribed. Categories derived from the teacher's practical knowledge, such as subject, curriculum, instruction, self, and milieu, were used as a framework to describe and analyze the docent's practical knowledge. It was found that though the docents did indeed hold a coherent body of knowledge that originates in their practice, their theoretical knowledge of art was often an inadequate base on which to build an interpretation of the gallery's exhibitions. Differences were found in the educational goals of the gallery, and between the institution, and the docent’s educational values and purposes. Educators need to be aware or the shifting, complex, and sometimes paradoxical nature of the docent’s role. The docent’s perspective must be considered in the successful planning and implementation of education programmes.
Andrea Babbi u.a. (Hgg.), The Mediterranean Mirror
Creators: name: Pruzsinszky, Regine
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Andrea Babbi u.a. (Hgg.), The Mediterranean Mirror. RGZM – Tagungen Bd. 20. Regensburg: Schnell und Steiner 2015, 336 S., 52 s/w-Abb, 34 farb. Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
A test on external Compton models for $γ$-ray active galactic nuclei
Creators: name: Fan, Zhonghui
name: Cao, Xinwu
name: Gu, Minfeng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There is clear evidence that the $γ$-ray emission from active galactic nuclei (AGNs) is attributed to the inverse Compton scatterings in the relativistic blobs near the massive black holes. If the soft seed photons are from the regions outside the blobs, a linear relation between $(νF_{ν,γ}/νF_{ν, \rm syn} u^{*})^{1/(1+α)}$ and Doppler factor $δ$ is expected, where $νF_{ν,γ}$ and $νF_{ν, \rm syn}$ are monochromatic $γ$-ray and synchrotron fluxes, respectively, and $u^{*}$ is the energy density of soft seed photons \citep{D97}. We estimate the soft photon energy density in the relativistic blobs contributed by the broad line region (BLRs) in these $γ$-ray AGNs using their broad-line emission data. The Doppler factors $δ$ are derived from their radio core and X-ray emission data, based on the assumption that the X-ray emission is produced through synchrotron self-Compton (SSC) scatterings. We find two nearly linear correlations: $(νF_{ν,γ}/νF_{\rm opt} u^{*})^{1/(1+α)} \propto δ^{1.09}$, and $(νF_{ν,γ}/νF_{\rm IR} u^{*})^{1/(1+α)} \propto δ^{1.20}$, which are roughly consistent with the linear correlation predicted by the theoretical model for external Compton scatterings. Our results imply that the soft seed photons are dominantly from the BLRs in these $γ$-ray AGNs.
description: 18 pages, accepted by ApJ
The intermediate-age globular cluster NGC 1783 in the Large Magellanic Cloud
Creators: name: Mucciarelli, A.
name: Origlia, L.
name: Ferraro, F. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Hubble Space Telescope ACS deep photometry of the intermediate-age globular cluster NGC 1783 in the Large Magellanic Cloud. By using this photometric dataset, we have determined the degree of ellipticity of the cluster ($ε$=0.14$\pm$0.03) and the radial density profile. This profile is well reproduced by a standard King model with an extended core (r_c=24.5'') and a low concentration (c=1.16), indicating that the cluster has not experienced the collapse of the core. We also derived the cluster age, by using the Pisa Evolutionary Library (PEL) isochrones, with three different amount of overshooting (namely, $Λ_{os}$=0.0, 0.10 and 0.25). From the comparison of the observed Color-Magnitude Diagram (CMD) and Main Sequence (MS) Luminosity Function (LF) with the theoretical isochrones and LFs, we find that only models with the inclusion of some overshooting ($Λ_{os}$=0.10-0.25) are able to reproduce the observables. By using the magnitude difference $δV_{SGB}^{He-Cl}=0.90$ between the mean level of the He-clump and the flat region of the SGB, we derive an age $τ$=1.4$\pm$0.2 Gyr.
description: Accepted to publication by AJ
Obscuring digital route choice information prevents delay-induced congestion
Creators: name: Krall, Verena
name: Burg, Max F.
name: Pagenkopf, Friedrich
name: Wolf, Henrik
name: Timme, Marc
name: Schröder, Malte
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Although routing applications increasingly affect individual mobility choices, their impact on collective traffic dynamics remains largely unknown. Smart communication technologies provide accurate traffic data for choosing one route over other alternatives, yet inherent delays undermine the potential usefulness of such information. Here we introduce and analyze a simple model of collective traffic dynamics which result from route choice relying on outdated traffic information. We find for sufficiently small information delays that traffic flows are stable against perturbations. However, delays beyond a bifurcation point induce self-organized flow oscillations of increasing amplitude -- congestion arises. Providing delayed information averaged over sufficiently long periods of time or, more intriguingly, reducing the number of vehicles adhering to the route recommendations may prevent such delay-induced congestion. We reveal the fundamental mechanisms underlying these phenomena in a minimal two-road model and demonstrate their generality in microscopic, agent-based simulations of a road network system. Our findings provide a way to conceptually understand system-wide traffic dynamics caused by broadly used non-instantaneous routing information and suggest how resulting unintended collective traffic states could be avoided.
description: 12 pages, 9 figures; additional appendix section, included link to code and data
B1MG M5.2 Maturity level model defined_ standards, indicators and review
Creators: name: Lopes, Fátima
name: Vicente, Astrid
Publisher: name: Zenodo
Year: 2021
Subjects: B1MG
Beyond 1 Million Genomes
ELIXIR
1+MG
1+ Million Genomes
MLM
Maturity Level Model

description: B1MG M5.2 Maturity level model defined: standards, indicators and review framework
Alexandra Eppinger, Hercules in der Spätantike. Die Rolle des Heros im Spannungsfeld zwischen Heidentum und Christentum
Creators: name: Kovacs, Martin
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Alexandra Eppinger, Hercules in der Spätantike. Die Rolle des Heros im Spannungsfeld zwischen Heidentum und Christentum. Philippika, Altertumswissenschaftliche Abhandlungen, Contributions to the Study of Ancient World Cultures Bd. 89. Wiesbaden: Harassowitz Verlag 2015, 422 S., 14 Taf. mit 14 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Holger Schaaff, Antike Tuffbergwerke am Laacher See-Vulkan
Creators: name: Hornung, Sabine
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Holger Schaaff, Antike Tuffbergwerke am Laacher See-Vulkan. Monographien des RGZM Bd. 107, Vulkanpark-Forschung Bd. 11. Mainz: RGZM 2015, 243 S., 193 z.T. farbige Abb., 5 Beilagen
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Additional file 1 of Correlates of group sex participation among men who have sex with men in Chongqing, Southwestern China
Creators: name: Chen, Jin
name: Fan, Hui
name: Chen, Huailiang
name: Yao, Feifei
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1. Questionnaire for MSM in Chongqing. Questionnaire for MSM in Chongqing.
The instability of planetary systems in binaries: how the Kozai mechanism leads to strong planet-planet interactions
Creators: name: Malmberg, Daniel
name: Davies, Melvyn B.
name: Chambers, John E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this letter we consider the evolution of a planetary system around a star inside a wide binary. We simulate numerically the evolution of the planetary orbits for both co-planar and highly-inclined systems. We find that the Kozai mechanism operates in the latter case. This produces a highly eccentric outer planet whose orbit crosses those of some of the inner planets. Strong planet-planet interactions then follow resulting in the ejection of one or more planets. We note that planetary systems resembling our solar system, formed around single stars in stellar clusters may exchange into binaries and thus will be vulnerable to planet stripping. This process will reduce the number of solar-system like planetary systems, and may produce at least some of the observed extra-solar planets.
description: 5 pages, 2 figures, accepted for publication in MNRAS Letters
Beyond-mean-field effects in Rabi-coupled two-component Bose-Einstein condensate
Creators: name: Lavoine, L
name: Hammond, A
name: Recati, A
name: Petrov, D
name: Bourdel, T
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically calculate and experimentally measure the beyond-mean-field (BMF) equation of state in a coherently-coupled two-component Bose-Einstein condensate (BEC) in the regime where averaging of the interspecies and intraspecies coupling constants over the hyperfine composition of the single-particle dressed state predicts the exact cancellation of the two-body interaction. We show that with increasing the Rabi-coupling frequency $Ω$, the BMF energy density crosses over from the nonanalytic Lee-Huang-Yang (LHY) scaling $\propto n^{5/2}$ to an expansion in integer powers of density, where, in addition to a two-body BMF term $\propto n^2 \sqrtΩ$, there emerges a repulsive three-body contribution $\propto n^3/\sqrtΩ$. We experimentally evidence this two contributions, thanks to their different scaling with $Ω$, in the expansion of a Rabi-coupled two-component $^{39}$K condensate in a waveguide. By studying the expansion with and without Rabi coupling, we reveal an important feature relevant for observing BMF effects and associated phenomena in mixtures with spin-asymmetric losses: Rabi coupling helps preserve the spin composition and thus prevents the system from drifting away from the point of vanishing mean field.
Conservation laws for the Maxwell-Dirac equations with a dual Ohm's law
Creators: name: Ibragimov, Nail H.
name: Khamitova, Raisa
name: Thidé, Bo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using a general theorem on conservation laws for arbitrary differential equations proved by Ibragimov, we have derived conservation laws for Dirac's symmetrized Maxwell-Lorentz equations under the assumption that both the electric and magnetic charges obey linear conductivity laws (dual Ohm's law). We find that this linear system allows for conservation laws which are non-local in time.
Asset-Based Biliteracy: Recentering Emergent Bilingual Students In Dual Language English Reading Instruction
Creators: name: Smith, Francesca
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 390108
subject: LOTE, ESL and TESOL curriculum and pedagogy
classificationCode: 470306
subject: English as a second language
classificationCode: 470310
subject: Iberian languages
classificationCode: 470402
subject: Child language acquisition

description: As gentrifying dual language (DL) schools in the United States increasingly attract students with linguistic, racial, and socioeconomic privilege, a key consideration is whether these schools are intentionally supporting the specific needs and assets of emergent bilingual (EB) students from Latinx families. This dissertation of practice examined how an asset-based early literacy intervention in a first grade English DL classroom could recenter EB students through both structured literacy instruction and parent partnership, using a funds of knowledge framework. The 11-week Student Intervention explored how a teacher could actively build upon EB students’ Spanish language and literacy competencies within small-group English reading instruction at the beginning of their formal bilingual education. Quantitative findings showed that explicitly grounding early English reading instruction in the transfer and non-transfer of Spanish literacy skills supported students’ progress toward grade-level expectations for English decoding and letter sound knowledge. The parallel Parent Intervention centered parent voices through qualitative interviews. Findings indicated that Spanish-speaking families expressed unique capacities to support biliteracy learning grounded in Science of Reading-based practices. The implications from this study direct DL educators to deepen collaboration towards biliteracy by continuing to explore and incorporate elements of cross-linguistic transfer and families’ funds of knowledge. Recommendations for student instruction, teacher professional development, family partnership, and research, within the context of early biliteracy, are discussed.
Wolf Koenigs, Der Athenatempel von Priene
Creators: name: Mattern, Torsten
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Wolf Koenigs, Der Athenatempel von Priene. Archäologische Forschungen Bd. 33, Priene Bd. 3. Wiesbaden: Reichert 2015, 504 S., 13 farb. Abb., 643 s/w-Abb., 40 Taf.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
On covariant nonlocal chiral quark models with separable interactions
Creators: name: Dumm, D. Gomez
name: Grunfeld, A. G.
name: Scoccola, N. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a comparative analysis of chiral quark models which include nonlocal covariant four-fermion couplings. We consider two alternative ways of introducing the nonlocality, as well as various shapes for the momentum-dependent form factors governing the effective interactions. In all cases we study the behavior of model parameters and analyze numerical results for constituent quark masses and quark propagator poles. Advantages of these covariant nonlocal schemes over instantaneous nonlocal schemes and the standard NJL model are pointed out.
description: 12 pages, 2 figures
Preheating after N-flation
Creators: name: Battefeld, Diana
name: Kawai, Shinsuke
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study preheating in N-flation, assuming the Marčenko-Pastur mass distribution, equal energy initial conditions at the beginning of inflation and equal axion-matter couplings, where matter is taken to be a single, massless bosonic field. By numerical analysis we find that preheating via parametric resonance is suppressed, indicating that the old theory of perturbative preheating is applicable. While the tensor-to-scalar ratio, the non-Gaussianity parameters and the scalar spectral index computed for N-flation are similar to those in single field inflation (at least within an observationally viable parameter region), our results suggest that the physics of preheating can differ significantly from the single field case.
description: 14 pages, 14 figures, references added, fixed typos
Knowledge and skill requirements in clerical work
Creators: name: Hamilton, Gillian
Publisher: name: University of British Columbia
Year: 2010

description: The focus of the thesis is on a comparison of management job descriptions with accounts of knowledge and skill requirements in clerical work, using a set of eleven dimensions. Three jobs occupied by women are investigated. The organizations vary from a small, private-interest office to a large public bureaucracy. Case one is an administrative clerk from a trade association. The second case is a clerk-stenographer from a planning department of a municipality. The final case is an accounts payable clerk from a linen supply company. Data for analysis come from interview and observation records. The emphasis of the investigation is on the ingenuity with which these employees carry out their work. It was found that the clerks require more skills than are officially recognized. In all cases management underestimated the skills required, and the contribution the women make to the organization. Official job descriptions are a product of rationalistic practices, and yet it is argued that they are also expressions of patriarchal ideology.
Alexia Zotou, Carmina anacreontea 1-34. Ein Kommentar
Creators: name: Bär, Silvio
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Alexia Zotou, Carmina anacreontea 1-34. Ein Kommentar. Beiträge zur Altertumskunde Bd. 332. Berlin/Boston: Walter de Gruyter 2014, VIII+206 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 19 (2016): Göttinger Forum für Altertumswissenschaft
Tunable Anderson Localization of Dark States
Creators: name: Brehm, Jan David
name: Pöpperl, Paul
name: Mirlin, Alexander D.
name: Shnirman, Alexander
name: Stehli, Alexander
name: Rotzinger, Hannes
name: Ustinov, Alexey V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Random scattering of photons in disordered one-dimensional solids gives rise to an exponential suppression of transmission, which is known as Anderson localization. Here, we experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system comprising eight individually tunable qubits coupled to a photonic continuum of a waveguide. Employing the qubit frequency control, we artificially introduce frequency disorder to the system and observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes. The localization length decreases with the disorder strength, which we control in-situ by varying individual qubit frequencies. Employing a one-dimensional non-interacting model of coupled qubits and photons, we are able to support and complement the experimental results. The difference between our investigation and previous studies of localization in qubit arrays is the coupling via a common waveguide, allowing us to explore the localization of mediating photons in an intrinsically open system. The experiment opens the door to the study of various localization phenomena on a new platform, which offers a high degree of control and readout possibilities.
description: 15 pages including appendix, 9 figures. Comments welcome
Discovery of very high energy gamma-ray emission from the low-frequency peaked BL Lacertae object BL Lacertae
Creators: name: MAGIC Collaboration
name: Albert, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The MAGIC collaboration observed BL Lacertae for 22.2 hr during 2005 August to December and for 26 hr during 2006 July to September. The source is the historical prototype and eponym of a class of low-frequency peaked BL Lacertae (LBL) objects. A very high energy (VHE) gamma-ray signal was discovered with a 5.1 sigma excess in the 2005 data. Above 200 GeV, an integral flux of 0.6+-0.2 x 10^(-11) cm^(-2) s^(-1) was measured, corresponding to approximately 3% of the Crab flux. The differential spectrum between 150 and 900 GeV is rather steep with a photon index of -3.6+-0.5. The light curve shows no significant variability during the observations in 2005. For the first time a clear detection of VHE gamma-ray emission from an LBL object was obtained with a signal below previous upper limits. The 2006 data show no significant excess. This drop in flux follows the observed trend in optical activity.
description: Accepted for publication in ApJ Letters, 4 pages, 5 figures, Figure-5 revised, Minor corrections following the referee report