cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Average decay estimates for Fourier transforms of measures supported on curves
Creators: name: Brandolini, Luca
name: Gigante, Giacomo
name: Greenleaf, Allan
name: Iosevich, Alexander
name: Seeger, Andreas
name: Travaglini, Giancarlo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B10, 42B99

description: We consider Fourier transforms of densities supported on curves in R^d. We obtain sharp lower and close to sharp upper bounds for the L^q decay rates.
description: We have learned about an important reference on the subject matter, and revised the paper accordingly
Nonsingular cosmological models with strong gravity in the past
Creators: name: Ageeva, Y.
name: Petrov, P.
name: Rubakov, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In scalar-tensor Horndeski theories, nonsingular cosmological models - bounce and genesis - are problematic because of potential ghost and/or gradient instabilities. One way to get around this obstacle is to send the effective Planck mass to zero in the asymptotic past ("strong gravity in the past"). One may suspect that this feature is a signal of a strong coupling problem at early times. However, the classical treatment of the cosmological background is legitimate, provided that the strong coupling energy scale remains at all times much higher than the scale associated with the classical evolution. We construct various models of this sort, namely (i) bouncing Universe which proceeds through inflationary epoch to kination (expansion within general relativity, driven by massless scalar field); (ii) bouncing Universe with kination stage immediately after bounce; (iii) combination of genesis and bounce, with the Universe starting from flat space-time, then contracting and bouncing to the expansion epoch; (iv) "standard" genesis evading the strong coupling problem in the past. All these models are stable, and perturbations about the backgrounds are not superluminal.
description: 40 pages, 15 figures
Marianne Mathys, Architekturstiftungen und Ehrenstatuen. Untersuchungen zur visuellen Repräsentation der Oberschicht im späthellenistischen und kaiserzeitlichen Pergamon
Creators: name: Emme, Burkhard
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Marianne Mathys, Architekturstiftungen und Ehrenstatuen. Untersuchungen zur visuellen Repräsentation der Oberschicht im späthellenistischen und kaiserzeitlichen Pergamon. Pergamenische Forschungen Bd. 16. Darmstadt: Philipp von Zabern 2014, 190 S., 23 Abb. + 24 Taf.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Mapping a Homopolymer onto a Model Fluid
Creators: name: Pasquali, S.
name: Percus, J. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We describe a linear homopolymer using a Grand Canonical ensemble formalism, a statistical representation that is very convenient for formal manipulations. We investigate the properties of a system where only next neighbor interactions and an external, confining, field are present, and then show how a general pair interaction can be introduced perturbatively, making use of a Mayer expansion. Through a diagrammatic analysis, we shall show how constitutive equations derived for the polymeric system are equivalent to the Ornstein-Zernike and P.Y. equations for a simple fluid, and find the implications of such a mapping for the simple situation of Van der Waals mean field model for the fluid.
description: 12 pages, 3 figures
Johannes Christian Linnemann, Die Nekropolen von Diokaisareia
Creators: name: Berns, Christof
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Johannes Christian Linnemann, Die Nekropolen von Diokaisareia. Diokaisareia in Kilikien Bd. 3. Berlin: De Gruyter 2013, 352 S. + 5 Faltkarten
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Domain Walls As Probes Of Gravity
Creators: name: Dvali, Gia
name: Gabadadze, Gregory
name: Pujolas, Oriol
name: Rahman, Rakibur
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that domain walls are probes that enable one to distinguish large-distance modified gravity from general relativity (GR) at short distances. For example, low-tension domain walls are stealth in modified gravity, while they do produce global gravitational effects in GR. We demonstrate this by finding exact solutions for various domain walls in the DGP model. A wall with tension lower than the fundamental Planck scale does not inflate and has no gravitational effects on a 4D observer, since its 4D tension is completely screened by gravity itself. We argue that this feature remains valid in a generic class of models of infrared modified gravity. As a byproduct, we obtain exact solutions for super-massive codimension-2 branes.
description: 25 pages, 4 figures
Musa Kadioğlu, Das Gerontikon von Nysa am Mäander
Creators: name: Thür, Hilke
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Musa Kadioğlu, Das Gerontikon von Nysa am Mäander. Forschungen in Nysa am Mäander Bd. 3. Darmstadt: Wissenschaftliche Buchgesellschaft 2014, VIII + 211 S., 84 Textabb., 81 Taf. mit s/w + Farb-Abb., 13 Pl.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Terascale Physics Opportunities at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG
Creators: name: Adams, T.
name: Batra, P.
name: Bugel, L.
name: Camilleri, L.
name: Conrad, J. M.
name: de Gouvea, A.
name: Fisher, P. H.
name: Formaggio, J. A.
name: Jenkins, J.
name: Karagiorgi, G.
name: Kobilarcik, T. R.
name: Kopp, S.
name: Kyle, G.
name: Loinaz, W. A.
name: Mason, D. A.
name: Milner, R.
name: Moore, R.
name: Morfin, J. G.
name: Nakamura, M.
name: Naples, D.
name: Nienaber, P.
name: Olness, F. I
name: Owens, J. F.
name: Pate, S. F.
name: Pronin, A.
name: Seligman, W. G.
name: Shaevitz, M. H.
name: Schellman, H.
name: Schienbein, I.
name: Syphers, M. J.
name: Tait, T. M. P.
name: Takeuchi, T.
name: Tan, C. Y.
name: Van de Water, R. G.
name: Yamamoto, R. K.
name: Yu, J. Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This article presents the physics case for a new high-energy, ultra-high statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering on Glass). This experiment uses a Tevatron-based neutrino beam to obtain over an order of magnitude higher statistics than presently available for the purely weak processes $ν_μ+e^- \to ν_μ+ e^-$ and $ν_μ+ e^- \to ν_e + μ^-$. A sample of Deep Inelastic Scattering events which is over two orders of magnitude larger than past samples will also be obtained. As a result, NuSOnG will be unique among present and planned experiments for its ability to probe neutrino couplings to Beyond the Standard Model physics. Many Beyond Standard Model theories physics predict a rich hierarchy of TeV-scale new states that can correct neutrino cross-sections, through modifications of $Zνν$ couplings, tree-level exchanges of new particles such as $Z^\prime$s, or through loop-level oblique corrections to gauge boson propagators. These corrections are generic in theories of extra dimensions, extended gauge symmetries, supersymmetry, and more. The sensitivity of NuSOnG to this new physics extends beyond 5 TeV mass scales. This article reviews these physics opportunities.
description: 35 pages, 20 figures, additional citations in v2
Developing a viable Business Model for Start-ups at the Gruendungsgarage
Creators: name: Mueller, Christiana
name: Poandl, Elisabeth
name: Glinik, Martin
Publisher: name: Journal of Business Models
Year: 2019

description: Developing a viable business model is crucial when founding a start-up. This paper presents how this is achieved in the Gruendungsgarage initiative for start-ups following an experience-oriented teaching approach including a blended-learning business model workshop. Insights from instructors and participants allow the proven concept to be adopted to other formats.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
Nicolas Wiater (Hg.), Dionysius von Halikarnass. Römische Frühgeschichte 1 (Bücher 1 bis 3)
Creators: name: Hofeneder, Andreas
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Nicolas Wiater (Hg.), Dionysius von Halikarnass. Römische Frühgeschichte 1 (Bücher 1 bis 3). Eingeleitet, aus dem Altgriechischen ins Deutsche übersetzt und kommentiert von Nicolas Wiater. Bibliothek der griechischen Literatur Bd. 75. Stuttgart: Anton Hiersemann KG 2014, VIII + 366 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
A note on a third order curvature invariant in static spacetimes
Creators: name: Saa, Alberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider here the third order curvature invariant $I=R_{μνρσ;δ}R^{μνρσ;δ}$ in static spacetimes ${\cal M}=R\timesΣ$ for which $Σ$ is conformally flat. We evaluate explicitly the invariant for the $N$-dimensional Majumdar-Papapetrou multi black-holes solution, confirming that $I$ does indeed vanish on the event horizons of such black-holes. Our calculations show, however, that solely the vanishing of $I$ is not sufficient to locate an event horizon in non-spherically symmetric spacetimes. We discuss also some tidal effects associated to the invariant $I$.
description: 5 pages, 3 figures. Extra material available at http://vigo.ime.unicamp.br/inv
Iterative Human and Automated Identification of Wildlife Images
Creators: name: Miao, Zhongqi
name: Liu, Ziwei
name: Gaynor, Kaitlyn M.
name: Palmer, Meredith S.
name: Yu, Stella X.
name: Getz, Wayne M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Camera trapping is increasingly used to monitor wildlife, but this technology typically requires extensive data annotation. Recently, deep learning has significantly advanced automatic wildlife recognition. However, current methods are hampered by a dependence on large static data sets when wildlife data is intrinsically dynamic and involves long-tailed distributions. These two drawbacks can be overcome through a hybrid combination of machine learning and humans in the loop. Our proposed iterative human and automated identification approach is capable of learning from wildlife imagery data with a long-tailed distribution. Additionally, it includes self-updating learning that facilitates capturing the community dynamics of rapidly changing natural systems. Extensive experiments show that our approach can achieve a ~90% accuracy employing only ~20% of the human annotations of existing approaches. Our synergistic collaboration of humans and machines transforms deep learning from a relatively inefficient post-annotation tool to a collaborative on-going annotation tool that vastly relieves the burden of human annotation and enables efficient and constant model updates.
description: This preprint has not undergone peer review (when applicable) or any post-submission improvements or corrections. It is published in Nature Machine Intelligence: https://www.nature.com/articles/s42256-021-00393-0
The spectral data for Hamiltonian stationary Lagrangian tori in R^4
Creators: name: McIntosh, Ian
name: Romon, Pascal
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53C42,53D12

description: This article determines the spectral data, in the integrable systems sense, for all weakly conformally immersed Hamiltonian stationary Lagrangian in $\R^4$. This enables us to describe their moduli space and the locus of branch points of such an immersion. This is also an informative example in integrable systems geometry, since the group of ambient isometries acts non-trivially on the spectral data and the relevant energy functional (the area) need not be constant under deformations by higher flows.
description: 30 pages. Version 3: a complete rewrite of version 2 with new results and two significant corrections
Angela Berthold, Entwurf und Ausführung in den artes minores. Münzund Gemmenkünstler des 6.-4. Jhs. v. Chr.
Creators: name: Lorenz, Jürgen
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Angela Berthold, Entwurf und Ausführung in den artes minores. Münzund Gemmenkünstler des 6.-4. Jhs. v. Chr. Antiquitates, Archäologische Forschungsergebnisse Bd. 61. Hamburg: Verlag Dr. Kovač 2013, 414 S., 440 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Land management institutions at the community level : the case of village land allocation committees in Lesotho
Creators: name: Morapeli, Matšeliso
Publisher: name: University of British Columbia
Year: 2010

description: Replacement of traditional land administration institutions with modern institutions has been one of the strategies used by the Lesotho Government to solve land management problems. This thesis uses a case study approach to analyze the effectiveness of one modern institution, the Village Land Allocation Committees (VLAC), at the community level in Lesotho. Customarily, land in Lesotho was allocated by traditional chiefs who could for various purposes revoke it. The system was allegedly open to abuse and under the Land Act 1979, the authority to allocate land was shifted from traditional chiefs to the VLAC, which is partly elected and partly nominated by the government. The thinking behind this change was that VLAC would be more democratic and efficient, representing local as well as national interests. The study consists of three stages: a) review of background literature on Lesotho; b) a comparison of land tenure reforms in Tanzania, Kenya and Botswana; and c) field research carried out through questionnaires administered to VLAC members, community members and government officials responsible for land administration at the community level in Lesotho. Conclusions drawn from this study are that lack of clear policy guidelines, lack of connection between land allocation and the overall planning and lack of meaningful community participation in the land allocation process, are among the major problems in the operation of VLAC. The study's major recommendations are: a) integrating land allocation with the overall land use planning; b) recognizing the continuing influence of traditional institutions and incorporating them into VLAC activities; c) providing VLAC with clearer goals and necessary resources; and d) building a planning and evaluation component into VLAC procedures. The need for further research on the composition and election process of VLAC is identified.
Markus Scholz, Grabbauten des 1.-3. Jahrhunderts in den nördlichen Grenzprovinzen des Römischen Reiches
Creators: name: Töpfer, Kai
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Markus Scholz, Grabbauten des 1.-3. Jahrhunderts in den nördlichen Grenzprovinzen des Römischen Reiches. Monographien des RGZM Mainz Bd. 103. Regensburg: Schnell & Steiner 2013, 1140 S., 396 s/w-Illustrationen, 21 farb. Illustrationen, 2 Bände, 22 farb. Karten
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Landschaftsverband Rheinland – LVR-Landesmuseum Bonn (Hgg.), Die Krim. Goldene Insel im Schwarzen Meer. Griechen – Skythen – Goten
Creators: name: Jaeggi, Othmar
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Landschaftsverband Rheinland – LVR-Landesmuseum Bonn (Hgg.), Die Krim. Goldene Insel im Schwarzen Meer. Griechen – Skythen – Goten. Begleitbuch zur Ausstellung, LVR-LandesMuseum Bonn, 4. Juli 2013-19. Januar 2014. Darmstadt: Primus Verlag 2013, 460 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
An extension of Bravyi-Smolin's construction for UMEBs
Creators: name: Levick, Jeremy
name: Rahaman, Mizanur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Combinatorics (math.CO)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We extend Bravyi and Smolin's construction for obtaining unextendible maximally entangled bases (UMEBs) from equiangular lines. We show that equiangular real projections of rank more than 1 also exhibit examples of UMEBs. These projections arise in the context of optimal subspace packing in Grassmannian spaces. This generalization yields new examples of UMEBs in infinitely many dimensions of the underlying system. Consequently, we find a set of orthogonal unitary bases for symmetric subspaces of matrices in odd dimensions. This finding validates a recent conjecture about the mixed unitary rank of the symmetric Werner-Holevo channel in infinitely many dimensions.
description: Some expositions have been changed and a new example (Ex. 3.9) has been added. To appear in Quantum Information Processing (2021)
Philipp Kobusch, Die Grabbauten im römischen Hispanien. Zur kulturellen Prägung der Sepulkralarchitektur
Creators: name: Trunk, Markus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Philipp Kobusch, Die Grabbauten im römischen Hispanien. Zur kulturellen Prägung der Sepulkralarchitektur. Tübinger Archäologische Forschungen Bd. 14. Rahden/Westfalen: Verlag Marie Leidorf 2014, 469 S., 74 Taf., 17 Beilagen.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Leptonic Charged Higgs Decays in the Zee Model
Creators: name: Sierra, D. Aristizabal
name: Restrepo, Diego
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the version of the Zee model where both Higgs doublets couple to leptons. Within this framework we study charged Higgs decays. We focus on a model with minimal number of parameters consistent with experimental neutrino data. Using constraints from neutrino physics we (i) discuss the reconstruction of the parameter space of the model using the leptonic decay patterns of both of the two charged Higgses, $h_{1,2}^{+}\to \ell_{j}^{+}ν_{i}$, and the decay of the heavier charged Higgs, $h_{2}^{+}\to h^{+}_{1}h^{0}$; (ii) show that the decay rate $Γ(h_{1}^{+}\to μ^{+}ν_{i})$ in general is enhanced in comparision to the standard two Higgs doublet model while in some regions of parameter space $Γ(h_{1}^{+}\to μ^{+}ν_{i})$ even dominates over $Γ(h_{1}^{+}\to τ^{+}ν_{i})$.
description: 25 pages, 9 figures
Barbara Sielhorst, Hellenistische Agorai. Gestaltung, Rezeption und Semantik eines urbanen Raumes
Creators: name: Mathys, Marianne
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Barbara Sielhorst, Hellenistische Agorai. Gestaltung, Rezeption und Semantik eines urbanen Raumes. Urban Spaces Bd. 3. Berlin/Boston: De Gruyter 2015, X + 354 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
On the Bound of Energy Consumption in Cellular IoT Networks
Creators: name: Homssi, Bassel Al
name: Al-Hourani, Akram
name: Chandrasekharan, Sathyanarayanan
name: Gomez, Karina Mabell
name: Kandeepan, Sithamparanathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Billions of sensors are expected to be connected to the Internet through the emerging Internet of Things (IoT) technologies. Many of these sensors will primarily be connected using wireless technologies powered using batteries as their sole energy source which makes it paramount to optimize their energy consumption. In this paper, we provide an analytic framework of the energy-consumption profile and its lower bound for an IoT end device formulated based on Shannon capacity. We extend the study to model the average energy-consumption performance based on the random geometric distribution of IoT gateways by utilizing tools from stochastic geometry and real measurements of interference in the ISM-band. Experimental data, interference measurements and Monte-Carlo simulations are presented to validate the plausibility of the proposed analytic framework, where results demonstrate that the current network infrastructures performance is bounded between two extreme geometric models. This study considers interference seen by a gateway regardless of its source.
Fine-scale genetic diversity and relatedness in fungi associated with the mountain pine beetle
Creators: name: Tsui, Clement K. M.; Beauseigle, Stephanie; Ojeda Alayon, Dario I.; Rice, Adrianne V.; Cooke, Janice E. K.; Sperling, Felix A. H.; Roe, Amanda D.; Hamelin, Richard C.
Publisher: name: University of Alberta Libraries
Year: 2019

Abstract
Isabella Wiegand, Neque libere neque vere. Die Literatur unter Tiberius und der Diskurs der 'res publica continua'
Creators: name: Lambrecht, Ulrich
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Isabella Wiegand, Neque libere neque vere. Die Literatur unter Tiberius und der Diskurs der 'res publica continua'. Classica Monacensia. Münchener Studien zur Klassischen Philologie Bd. 45. Tübingen: Narr Francke Attempto Verlag 2013, XIII + 358 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Strain distribution in quantum dot of arbitrary polyhedral shape: Analytical solution in closed form
Creators: name: Nenashev, A. V.
name: Dvurechenskii, A. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: An analytical expression of the strain distribution due to lattice mismatch is obtained in an infinite isotropic elastic medium (a matrix) with a three-dimensional polyhedron-shaped inclusion (a quantum dot). The expression was obtained utilizing the analogy between electrostatic and elastic theory problems. The main idea lies in similarity of behavior of point charge electric field and the strain field induced by point inclusion in the matrix. This opens a way to simplify the structure of the expression for the strain tensor. In the solution, the strain distribution consists of contributions related to faces and edges of the inclusion. A contribution of each face is proportional to the solid angle at which the face is seen from the point where the strain is calculated. A contribution of an edge is proportional to the electrostatic potential which would be induced by this edge if it is charged with a constant linear charge density. The solution is valid for the case of inclusion having the same elastic constants as the matrix. Our method can be applied also to the case of semi-infinite matrix with a free surface. Three particular cases of the general solution are considered--for inclusions of pyramidal, truncated pyramidal, and "hut-cluster" shape. In these cases considerable simplification was achieved in comparison with previously published solutions. A generalization of the obtained solution to the case of anisotropic media is discussed.
description: revtex4, 12 pages, 6 figures; Ch. II rewritten, new Ch. V added, errors in Eq.(13) and Eq.(22) fixed
D5.2 Delivered trainings on research management and administration skills in the second year
Creators: name: Djisalov, Mila
name: Knežević, Nikola
name: Janković, Nikolina
Publisher: name: Zenodo
Year: 2024

description:  

This deliverable highlights the trainings provided by NANOFACTS from January 1, 2022, to December 31, 2022, aimed at equipping BioSense researchers with practical experience in research project preparation and implementation. These sessions emphasize the transition from a research-focused role to one that incorporates entrepreneurial and commercial aspects, including potential technology transfer.
Thomas Fischer (mit Beiträgen von Ronald Bockius, Dietrich Boschung, Thomas Schmidts), Die Armee der Caesaren. Archäologie und Geschichte
Creators: name: Deschler-Erb, Eckhard
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Thomas Fischer (mit Beiträgen von Ronald Bockius, Dietrich Boschung, Thomas Schmidts), Die Armee der Caesaren. Archäologie und Geschichte. Regensburg: Friedrich Pustet Verlag 2012, 415 S., 574, teils mehrfarbige Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Tests for Standard Accretion Disk Models by Variability in Active Galactic Nuclei
Creators: name: Liu, H. T.
name: Bai, J. M.
name: Zhao, X. H.
name: Ma, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, standard accretion disk models of AGNs are tested using light curves of 26 objects well observed for reverberation mapping. Time scales of variations are estimated by the most common definition of the variability time scale and the zero-crossing time of the autocorrelation function of the optical light curves for each source. The measured time scales of variations by the two methods are consistent with each other. If the typical value of the viscosity parameter $α\sim 0.1$ is adopted, the measured optical variability time scales are most close to the thermal time scales of the standard disks. If $α$ is allowed to range from $\sim 0.03$ to $\sim 0.2$, the measured time scales are consistent with the thermal time scales of the standard disks. There is a linear relation between the measured variability time scales and black hole masses, and this linear relation is qualitatively consistent with expectation of the standard accretion disk models. The time lags measured by the ZDCF between different bands are on the order of days. The measured time lags of NGC 4151 and NGC 7469 are marginally consistent with the time lags estimated in the case of continuum thermal reprocessing for the standard accretion disk models. However, the measured time lags of NGC 5548 and Fairall 9 are unlikely to be the case of continuum thermal reprocessing. Our results are unlikely to be inconsistent with or are likely to be conditionally in favor of the standard accretion disk models of AGNs.
description: 31 pages, 6 figures
The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region
Creators: name: GRAVITY Collaboration
name: Amorim, A.
name: Bauböck, M.
name: Brandner, W.
name: Bolzer, M.
name: Clénet, Y.
name: Davies, R.
name: de Zeeuw, P. T.
name: Dexter, J.
name: Drescher, A.
name: Eckart, A.
name: Eisenhauer, F.
name: Schreiber, N. M. Förster
name: Gao, F.
name: Garcia, P. J. V.
name: Genzel, R.
name: Gillessen, S.
name: Gratadour, D.
name: Hönig, S.
name: Kaltenbrunner, D.
name: Kishimoto, M.
name: Lacour, S.
name: Lutz, D.
name: Millour, F.
name: Netzer, H.
name: Ott, T.
name: Paumard, T.
name: Perraut, K.
name: Perrin, G.
name: Peterson, B. M.
name: Petrucci, P. O.
name: Pfuhl, O.
name: Prieto, M. A.
name: Rouan, D.
name: Sanchez-Bermudez, J.
name: Shangguan, J.
name: Shimizu, T.
name: Schartmann, M.
name: Stadler, J.
name: Sternberg, A.
name: Straub, O.
name: Straubmeier, C.
name: Sturm, E.
name: Tacconi, L. J.
name: Tristram, K. R. W.
name: Vermot, P.
name: von Fellenberg, S.
name: Waisberg, I.
name: Widmann, F.
name: Woillez, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using VLTI/GRAVITY and SINFONI data, we investigate the sub-pc gas and dust structure around the nearby type 1 AGN hosted by NGC 3783. The K-band coverage of GRAVITY uniquely allows a simultaneous analysis of the size and kinematics of the broad line region (BLR), the size and structure of the near-IR continuum emitting hot dust, and the size of the coronal line region (CLR). We find the BLR probed through broad Br$γ$ emission is well described by a rotating, thick disk with a radial distribution of clouds peaking in the inner region. In our BLR model the physical mean radius of 16 light days is nearly twice the 10 day time lag that would be measured, which matches very well the 10 day time lag that has been measured by reverberation mapping. We measure a hot dust FWHM size of 0.74 mas (0.14 pc) and further reconstruct an image of the hot dust which reveals a faint (5% of the total flux) offset cloud which we interpret as an accreting cloud heated by the central AGN. Finally, we directly measure the FWHM size of the nuclear CLR as traced by the [CaVIII] and narrow Br$γ$ line. We find a FWHM size of 2.2 mas (0.4 pc), fully in line with the expectation of the CLR located between the BLR and narrow line region. Combining all of these measurements together with larger scale near-IR integral field unit and mid-IR interferometry data, we are able to comprehensively map the structure and dynamics of gas and dust from 0.01--100 pc.
description: 20 pages and 18 figures in main text, Accepted for publication in A&A
Sascha Kansteiner u.a. (Hgg.), Der Neue Overbeck. Die antiken Schriftquellen zu den bildenden Künsten der Griechen
Creators: name: Queyrel, François
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Sascha Kansteiner u.a. (Hgg.), Der Neue Overbeck. Die antiken Schriftquellen zu den bildenden Künsten der Griechen. Berlin/Boston: De Gruyter Verlag 2014, 3967 S., Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 18 (2015): Göttinger Forum für Altertumswissenschaft
Coronal loop widths and pressure scale heights
Creators: name: Petrie, Gordon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The scale heights of stratification and the widths of steady solar coronal loops exhibit properties unexplained by standard theory: observed scale heights are often much greater than static theory predicts, while the nearly-constant widths of loop emission signatures defy theoretical expectations for large flux tubes in stratified media. In this work we relate the cross-sectional profile of a coronal flux tube to its density scale height in steady-state plasma flow regimes. Steady flows may shorten or lengthen the scale height according to how the tube cross-sectional area varies with arclength. In a near-potential corona the flux tubes are expected to be sufficiently expansive in many active regions for scale heights to be increased by steady flows. On the other hand, cases where scale lengths are actually increased to observed sizes form a small part of the solution space, close to regimes where density profiles reverse. Therefore, although steady flows are the only steady process known to be capable of extending scale heights significantly, they are not expected to be not responsible for the majority of extended active region scale heights.
Gender Differences in Sexual Experiences: An Integrative Data Analysis
Creators: name: Brady, Ashlyn
Publisher: name: Open Science Framework
Year: 2021
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Gender differences
subject: Integrative data analysis
subject: Romantic relationships
subject: Sexual desire
subject: Sexual frequency
subject: Sexual satisfaction
subject: Well-being

description: Previous research has yielded inconsistent results about the implications of sexual experiences for individual and relational well-being. For example, several studies have revealed that people who frequently desire and have satisfying sexual experiences with their partners tend to achieve more satisfying and stable relationships than do people who rarely have such experiences (Byers, 2005; Laumann et al., 2006; Sprecher, 2002), whereas other studies have failed to find that sexual frequency, satisfaction, or desire are associated with greater relationship satisfaction and stability (Haiman et al., 2011; McNulty et al., 2016). Further, controversy remains as to whether men and women differ in their sexual desire and satisfaction, as well as whether men and women differ in the extent to which different sexual experiences affect their romantic relationships. One possible explanation for these inconsistent findings in past research is that many of these studies were underpowered. Thus, the goal of the current investigation is to leverage numerous datasets to create a high-powered sample that will resolve three inconsistencies in the literature. First, we will examine whether three aspects of sex—sexual frequency, sexual satisfaction, and sexual desire—are associated with greater personal (e.g., self-esteem, life satisfaction) and relational (e.g., relationship satisfaction, commitment) well-being. Second, we will examine whether men and women differ in their sexual desire and satisfaction. Finally, we will examine whether gender moderates the association between these three aspects of sex and well-being. To address these research questions, integrative data analysis (IDA) will be used to pool data across numerous datasets.
A Mesoscale Perspective on the Tolman Length
Creators: name: Lulli, Matteo
name: Biferale, Luca
name: Falcucci, Giacomo
name: Sbragaglia, Mauro
name: Shan, Xiaowen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We demonstrate that the multi-phase Shan-Chen lattice Boltzmann method (LBM) yields a curvature dependent surface tension $σ$ as computed from three-dimensional hydrostatic droplets/bubbles simulations. Such curvature dependence is routinely characterized, at first order, by the so-called {\it Tolman length} $δ$. LBM allows to precisely compute $σ$ at the surface of tension $R_s$ and determine the Tolman length from the coefficient of the first order correction. The corresponding values of $δ$ display universality for different equations of state, following a power-law scaling near the critical temperature. The Tolman length has been studied so far mainly via computationally demanding molecular dynamics (MD) simulations or by means of density functional theory (DFT) approaches playing a pivotal role in extending Classical Nucleation Theory. The present results open a new hydrodynamic-compliant mesoscale arena, in which the fundamental role of the Tolman length, alongside real-world applications to cavitation phenomena, can be effectively tackled. All the results can be independently reproduced through the "idea.deploy" framework.
description: 10 pages, 5 figures: extended text and added figures
Existence and Nonlinear Stability of Rotating Star Solutions of the Compressible Euler-Poisson Equations
Creators: name: Luo, Tao
name: Smoller, Joel
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove existence of rotating star solutions which are steady-state solutions of the compressible isentropic Euler-Poisson (EP) equations in 3 spatial dimensions, with prescribed angular momentum and total mass. This problem can be formulated as a variational problem of finding a minimizer of an energy functional in a broader class of functions having less symmetry than those functions considered in the classical Auchmuty-Beals paper. We prove the nonlinear dynamical stability of these solutions with perturbations having the same total mass and symmetry as the rotating star solution. We also prove local in time stability of $W^{1, \infty}(\RR^3)$ solutions where the perturbations are entropy-weak solutions of the EP equations. Finally, we give a uniform (in time) a-priori estimate for entropy-weak solutions of the EP equations.
Unit distance graphs with ambiguous chromatic number
Creators: name: Payne, Michael S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15

description: First Laszlo Szekely and more recently Saharon Shelah and Alexander Soifer have presented examples of infinite graphs whose chromatic numbers depend on the axioms chosen for set theory. The existence of such graphs may be relevant to the Chromatic Number of the Plane problem. In this paper we construct a new class of graphs with ambiguous chromatic number. They are unit distance graphs with vertex set R^n, and hence may be seen as further evidence that the chromatic number of the plane might depend on set theory.
description: 7 pages
title: Türen in die Vergangenheit
Creators: name: Harb, Christian
Publisher: name: Zentralbibliothek Zürich
Year: 2018
Subjects: subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie
subject: Zürich
subject: Steinzeit
subject: Archäologie
subject: Bauen

description: Die Meldung ging um die Welt: sogar BBC und CNN berichteten über die älteste Holztüre der Welt. Sie wurde in der Grabung für das Parkhaus Opéra in Zürich entdeckt. Aus dem Kanton Zürich geben gleich mehrere Türen einen Einblick in die hoch entwickelte Handwerkskunst der Jungsteinzeit.
Does the Cronin Peak Disappear at LHC Energies?
Creators: name: Barnafoldi, G. G.
name: Levai, P.
name: Fai, G.
name: Papp, G.
name: Cole, B. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we compare the nuclear modification factors in proton (deuteron) -- nucleus collisions at CERN SPS, FNAL and RHIC energies in a wide p_T range. In these experiments the nuclear modification factor has shown an enhancement at p_T ~ 4 GeV/c. The height of this "Cronin peak" depends on the c.m. energy of the collision, as it is subject to stronger shadowing at higher energies. One of the aims of this contribution is to analyze the shadowing phenomenon at lower (2 GeV/c < p_T < 4 GeV/c) and intermediate (4 GeV/c < p_T < 8 GeV/c) transverse momentum. Different shadowing parameterizations are considered and the obtained Cronin peaks are investigated at RHIC and LHC energies.
description: 6 Pages, 4 figure, Contribution to the Quark Matter 2006
AMS :: ATX August 2020 Blog Archive
Creators: name: Department Of American Studies
Publisher: name: American Studies
Year: 2020
Subjects: American Studies
Twitter

description: Content: Announcing the Jo Giese Excellence Endowment in American Studies
description: @AmStudies is a Twitter feed dedicated to representing the many activities and interests of the department of American Studies at The University of Texas at Austin. Together with the department’s blog, this feed exists to serve the AMS and Austin communities by acting as a hub for up-to-date information on events and opportunities at UT and beyond.
The effectiveness of an arthritis self-management program on a population of persons with scleroderma
Creators: name: Lees, Robert Jay
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this research study was to evaluate the effectiveness of the Arthritis Self-Management Program (ASMP), developed by Dr. K. Lorig, on a population of persons with scleroderma. This particular condition is a type of arthritis (also known as progressive systemic sclerosis) involving a disorder of the small blood vessels and connective tissues. It is characterized by the induration and thickening of the skin and by inflammatory, fibrotic, ischemic, and degenerative changes in the tissues throughout the body. Eighteen people, most of which were female, in the Vancouver Lower Mainland with the diagnosis of scleroderma volunteered for this study. Quantitative and qualitative methodological orientations were used to collect and analyze the data. A quasi-experimental, pretest-posttest nonequivalent comparison group design was used. Self-administered, standardized questionnaires were distributed to a sample of subjects to collect the quantitative data, and a standardized open-ended interview questionnaire was used to collect the qualitative data. The quantitative questionnaire comprised research instruments including The Visual Analogue Pain Scale, Health Assessment Questionnaire, Centre for Epidemiological Studies of Depression Scale, Cantril Quality of Life Scale, Arthritis Self-Efficacy Scale, and Health Locus of Control Scale. The quantitative findings indicated that no statistically significant improvements in health status were found. However, clinically significant improvement trends in health status were found. The qualitative findings generally indicated that the experimental subjects enjoyed the ASMP, found it to increase their perceived level of coping with the management of scleroderma, and found the ASMP to be a positive learning experience. With the exception of the ASMP being limited in its specific application to people with scleroderma, it proved to be a feasible patient education course for these people.
Synthesising Reinforcement Learning Policies through Set-Valued Inductive Rule Learning
Creators: name: Coppens, Youri
name: Steckelmacher, Denis
name: Jonker, Catholijn M.
name: Nowé, Ann
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Today's advanced Reinforcement Learning algorithms produce black-box policies, that are often difficult to interpret and trust for a person. We introduce a policy distilling algorithm, building on the CN2 rule mining algorithm, that distills the policy into a rule-based decision system. At the core of our approach is the fact that an RL process does not just learn a policy, a mapping from states to actions, but also produces extra meta-information, such as action values indicating the quality of alternative actions. This meta-information can indicate whether more than one action is near-optimal for a certain state. We extend CN2 to make it able to leverage knowledge about equally-good actions to distill the policy into fewer rules, increasing its interpretability by a person. Then, to ensure that the rules explain a valid, non-degenerate policy, we introduce a refinement algorithm that fine-tunes the rules to obtain good performance when executed in the environment. We demonstrate the applicability of our algorithm on the Mario AI benchmark, a complex task that requires modern reinforcement learning algorithms including neural networks. The explanations we produce capture the learned policy in only a few rules, that allow a person to understand what the black-box agent learned. Source code: https://gitlab.ai.vub.ac.be/yocoppen/svcn2
description: 17 pages, 4 figures. The final authenticated publication is available online at https://doi.org/10.1007/978-3-030-73959-1_15
AMS :: ATX December 2019 Blog Archive
Creators: name: Department Of American Studies
Publisher: name: American Studies
Year: 2019
Subjects: American Studies
Twitter

description: Contents: Dr. Lauren Gutterman Featured in Slate Interview -- See The Briscoe Center’s “Greatest Hits” Exhibition Through December 14 -- Our Songs of the Decade: The Official 2019 AMS::ATX Playlist
description: @AmStudies is a Twitter feed dedicated to representing the many activities and interests of the department of American Studies at The University of Texas at Austin. Together with the department’s blog, this feed exists to serve the AMS and Austin communities by acting as a hub for up-to-date information on events and opportunities at UT and beyond.
The Mid-Infrared Properties of X-ray Sources
Creators: name: Gorjian, V.
name: Brodwin, M.
name: Kochanek, C. S.
name: Murray, S.
name: Stern, D.
name: Brand, K.
name: Eisenhardt, P. R.
name: Ashby, M. L. N.
name: Barmby, P.
name: Brown, M. J. I.
name: Dey, A.
name: Forman, W.
name: Jannuzi, B. T.
name: Jones, C.
name: Kenter, A. T.
name: Pahre, M. A.
name: Shields, J. C.
name: Werner, M. W.
name: Willner, S. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We combine the results of the Spitzer IRAC Shallow Survey and the Chandra XBootes Survey of the 8.5 square degrees Bootes field of the NOAO Deep Wide- Field Survey to produce the largest comparison of mid-IR and X-ray sources to date. The comparison is limited to sources with X-ray fluxes >8x10-15 erg cm-2s-1 in the 0.5-7.0 keV range and mid-IR sources with 3.6 um fluxes brighter than 18.4 mag (12.3 uJy). In this most sensitive IRAC band, 85% of the 3086 X-ray sources have mid-IR counterparts at an 80% confidence level based on a Bayesian matching technique. Only 2.5% of the sample have no IRAC counterpart at all based on visual inspection. Even for a smaller but a significantly deeper Chandra survey in the same field, the IRAC Shallow Survey recovers most of the X-ray sources. A majority (65%) of the Chandra sources detected in all four IRAC bands occupy a well-defined region of IRAC [3.6] - [4.5] vs [5.8] - [8.0] color-color space. These X-ray sources are likely infrared luminous, unobscured type I AGN with little mid-infrared flux contributed by the AGN host galaxy. Of the remaining Chandra sources, most are lower luminosity type I and type II AGN whose mid-IR emission is dominated by the host galaxy, while approximately 5% are either Galactic stars or very local galaxies.
description: Accepted for publication in ApJ
AMS :: ATX January 2020 Blog Archive
Creators: name: Department Of American Studies
Publisher: name: American Studies
Year: 2020
Subjects: American Studies
Twitter

description: Contents: Tomorrow (1/23): Public Lecture by Dr. Chris Vials, “Empire After Human Rights: The Transatlantic Right and Identitarian War” -- Five Questions with First-Years: Whitney S. May -- This Thursday and Friday (1/29 & 1/31): Warfield Center Documentary Film Showcase -- Book Launch for Dr. Lauren Gutterman’s “Her Neighbor’s Wife,” February 4th at BookWoman
description: @AmStudies is a Twitter feed dedicated to representing the many activities and interests of the department of American Studies at The University of Texas at Austin. Together with the department’s blog, this feed exists to serve the AMS and Austin communities by acting as a hub for up-to-date information on events and opportunities at UT and beyond.