cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
DLT-BASED REVERSE DATA MONETIZATION IN DEZENTRALIZED DATA PLATFORM ECOSYSTEMS – A CONCEPTUAL APPROACH
Creators: name: Himmelsbach, Timo
Publisher: name: OSF Registries
Year: 2022
Subjects: subject: Business
subject: Data Storage Systems
subject: Computer Engineering
subject: Management Information Systems
subject: Technology and Innovation
subject: Engineering
subject: Usage-based Reverse Data Monetization, Distributed Ledger Technology, Decentralized Data Platform Ecosystems, Design Science Research

description: Data sharing and monetization provides organizations with new sources of revenue and value creation. However, an accepted and scalable approach to data sharing and monetization for organizations is still lacking in practice. Due to the lack of effective mechanisms for control and enforcing governance as well as effective evaluation and pricing mechanisms, organizations are hesitant to share their data. As a result, a large share of the economic value-creation potential of data is foregone. Following the Design Science Research (DSR) approach, we propose a blockchain-based approach for decentralized data sharing and usage-based data valuation. We validate the derived design requirements with empirical evidence from expert interviews and single out the clinical trial context for the future prototype development and testing.
Dissecting functional degradation in NiTi shape-memory-alloys containing amorphous regions via atomistic simulations
Creators: name: Ko, Won-Seok
name: Choi, Won Seok
name: Xu, Guanglong
name: Cho, Pyuck-Pa
name: Ikeda, Yuji
name: Grabowski, Blazej
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Molecular dynamics simulations are performed to provide a detailed understanding of the functional degradation of shape memory alloys at small scale. The origin of the experimentally reported accumulation of plastic deformation and the anomalous sudden increase of the residual strain under cyclic mechanical loading are explained by detailed insights into the relevant atomic scale processes. Our work reveals that the mechanical response of shape-memory-alloy pillars under cyclic compression is significantly influenced by the presence of an amorphous-like surface region as experimentally induced by focused ion beam milling. The main factor responsible for the observed degradation of superelasticity under cyclic loading is the accumulated plastic deformation and the resultant retained martensite originating from a synergetic contribution of the amorphous and crystalline shape-memory-alloy regions. We show that the reported sudden diminishment of the stress plateaus and hysteresis under cyclic loading is caused by the increased stability of the martensite phase due to the presence of the amorphous phase. Based on the identified mechanism responsible for the degradation, we validate reported methods of recovering the superelasticity and propose a new method to prohibit the synergetic contribution of the amorphous and crystalline regions, such as to achieve a sustainable operation of shape memory alloys at small scale.
description: 32 pages, 15 figures, 1 table
Ina Eichner – Vasiliki Tsamakda (Hgg.), Syrien und seine Nachbarn von der Spätantike bis in die islamische Zeit
Creators: name: Müller-Siegwardt, Jana
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ina Eichner – Vasiliki Tsamakda (Hgg.), Syrien und seine Nachbarn von der Spätantike bis in die islamische Zeit. Spätantike – Frühes Christentum – Byzanz 25. Wiesbaden: Reichert Verlag 2009, 308 S., 92 s/w-Abb., 20 Karten und Pläne, 15 Zeichnungen, 1 Tabelle auf 54 Tafeln
description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Generic Models for Disk-Resolved and Disk-Integrated Phase Dependent Linear Polarization of Light Reflected from Exoplanets
Creators: name: Chakrabarty, Aritra
name: Sengupta, Sujan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Similar to the case of solar system planets, reflected starlight from exoplanets is expected to be polarized due to atmospheric scattering and the net disk integrated polarization should be non-zero owing to the asymmetrical illumination of the planetary disk. The computation of the disk-integrated reflected flux and its state of polarization involves techniques for the calculation of the local reflection matrices as well as the numerical recipes for integration over the planetary disks. In this paper, we present a novel approach to calculate the azimuth-dependent reflected intensity vectors at each location on the planetary disk divided into grids. We achieve this by solving the vector radiative transfer equations that describe linear polarization. Our calculations incorporate self-consistent atmospheric models of exoplanets over a wide range of equilibrium temperature, surface gravity, atmospheric composition, and cloud structure. A comparison of the flux and the amount of polarization calculated by considering both single and multiple scattering exhibits the effect of depolarization due to multiple scattering of light depending on the scattering albedo of the atmosphere. We have benchmarked our basic calculations against some of the existing models. We have also presented our models for the hot Jupiter HD 189733 b, indicating the level of precision required by future observations to detect the polarization of this planet in the optical and near-infrared wavelength region. The generic nature and the accuracy offered by our models make them an effective tool for modeling the future observations of the polarized light reflected from exoplanets.
description: 24 pages, 17 figures. Accepted for publication in The Astrophysical Journal
Gravitation And the Universe from large Scale-Structures: The GAUSS mission concept
Creators: name: Blanchard, Alain
name: Éric, Aubourg
name: Brax, Philippe
name: Castender, Francisco J.
name: Codis, Sandrine
name: Escoffier, Stéphanie
name: Dournac, Fabien
name: Ferté, Agnès
name: Finelli, Fabio
name: Fosalba, Pablo
name: Gangler, Emmanuel
name: Gontcho, A Gontcho Satya
name: Hawken, Adam
name: Ilić, Stéphane
name: Kneib, Jean-Paul
name: Kunz, Martin
name: Lavaux, Guilhem
name: Fèvre, Olivier Le
name: Lesgourgues, Julien
name: Mellier, Yannick
name: Neveu, Jérémy
name: Rasera, Yann
name: Renault, Cécile
name: Ricci, Marina
name: Sakr, Ziad
name: Sanchez, Norma G.
name: Tutusaus, Isaac
name: Yahia-Cherif, Safir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Today, thanks in particular to the results of the ESA Planck mission, the concordance cosmological model appears to be the most robust to describe the evolution and content of the Universe from its early to late times. It summarizes the evolution of matter, made mainly of dark matter, from the primordial fluctuations generated by inflation around $10^{-30}$ second after the Big-Bang to galaxies and clusters of galaxies, 13.8 billion years later, and the evolution of the expansion of space, with a relative slowdown in the matter-dominated era and, since a few billion years, an acceleration powered by dark energy. But we are far from knowing the pillars of this model which are inflation, dark matter and dark energy. Comprehending these fundamental questions requires a detailed mapping of our observable Universe over the whole of cosmic time. The relic radiation provides the starting point and galaxies draw the cosmic web. JAXA's LiteBIRD mission will map the beginning of our Universe with a crucial test for inflation (its primordial gravity waves), and the ESA Euclid mission will map the most recent half part, crucial for dark energy. The mission concept, described in this White Paper, GAUSS, aims at being a mission to fully map the cosmic web up to the reionization era, linking early and late evolution, to tackle and disentangle the crucial degeneracies persisting after the Euclid era between dark matter and inflation properties, dark energy, structure growth and gravitation at large scale.
description: 24 pages, 3 figures, ESA Voyage2050 White Paper
The Expansion of the Universe and the Cosmological Constant Problem
Creators: name: O'Connell, R. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The discovery that the expansion of the universe is accelerating in time is a major discovery which still awaits adequate explanation. It is generally agreed that this implies a cosmic repulsion as a result of the existence of a cosmological constant . However, estimates of the cosmological constant, based on calculations of the zero-point fluctuations of quantum fields are too large by over a hundred orders of magnitude. This result is obtained by summing the zero-point energies up to a large cutoff energy, based on the Planck scale. Since there is no compelling reason for this choice, we argue that since all known quantum electrodynamic (QED) effects involves interaction with matter, a preferred choice should be based on causality and other considerations, leading to a much lower value for the cosmological constant .
description: Phys. Lett. A, in press
Ernst Künzl, Der Traum vom Imperium. Der Ludovisisarkophag – Grabmal eines Feldherrn Roms
Creators: name: Faust, Stephan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ernst Künzl, Der Traum vom Imperium. Der Ludovisisarkophag – Grabmal eines Feldherrn Roms. Mit Beiträgen von Matilde De Angelis d’Ossat und Friedrich-Wilhelm von Hase. Mainz: Römisch-Germanisches Zentralmuseum 2010, in Kommission bei Schnell und Steiner, Regensburg, 130 S., 96 Farbabb., 63 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Quantitative adaptive robust control based on a robust frequency domain estimator
Creators: name: Wang, Hongtao
Publisher: name: University of British Columbia
Year: 2008

description: It is widely appreciated that robust control and adaptive control focus on dealing with system uncertainty but emphasize different aspects. Adaptive control is efficient in eliminating structured uncertainty but has difficulty handling unstructured uncertainty. On the other hand, robust control guarantees the stability for the worst case but ends up with a very conservative design. This thesis will be mainly concerned with the development of a frequency domain quantitative adaptive robust control strategy, which can be viewed as a good combination of adaptive control and robust control to obtain the best closed-loop performance of a stable closed-loop system. The research will consist of two parts. Part one is to develop a new estimation method called frequency domain robust estimator which can improve the frequency function estimate and quantify system uncertainties in the frequency domain Part Two is to implement the quantitative adaptive robust controller based on the information obtained from the robust estimator.
The simplicial volume of closed manifolds covered by H^2 x H^2
Creators: name: Bucher-Karlsson, Michelle
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N10; 20J06

description: We compute the value of the simplicial volume for closed, oriented Riemannian manifolds covered by $\mathbb{H}^{2}\times\mathbb{H}^{2}$ explicitly, thus in particular for products of closed hyperbolic surfaces. This gives the first exact value of a nonvanishing simplicial volume for a manifold of nonconstant curvature.
description: 19 pages; added consequences: Milnor-Wood type inequality, nonexistence of affine structure
Klaus-Peter Goethert – Winfried Weber, Römerbauten in Trier. Porta Nigra, Basilika, Amphitheater, Barbarathermen, Thermen am Viehmarkt, Kaiserthermen, Basilika, Dom und Liebfrauenkirche, Römerbrücke
Creators: name: Heising, Alexander
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Klaus-Peter Goethert – Winfried Weber, Römerbauten in Trier. Porta Nigra, Basilika, Amphitheater, Barbarathermen, Thermen am Viehmarkt, Kaiserthermen, Basilika, Dom und Liebfrauenkirche, Römerbrücke. Führungshefte der Edition Burgen, Schlösser, Altertümer Rheinland-Pfalz 20.2. Regensburg: Schnell und Steiner (2. veränderte und erweiterte Auflage) 2010, 224 S., 174 Farbabb., 11 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Klaus Martin Girardet, Der Kaiser und sein Gott. Das Christentum im Denken und in der Religionspolitik Konstantins des Großen
Creators: name: Schneider, Horst
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Klaus Martin Girardet, Der Kaiser und sein Gott. Das Christentum im Denken und in der Religionspolitik Konstantins des Großen. Millennium-Studien/Millennium Studies/Studien zu Kultur und Geschichte des ersten Jahrtausends n. Chr./Studies in the Culture and History of the First Millennium C.E. 27. Berlin/New York: De Gruyter, IX + 213 S., 29 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Deeply Virtual Compton Scattering in Improved Holographic QCD
Creators: name: Amorim, Artur
name: Costa, Miguel S.
name: Quevedo, Robert C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present our current progress in the holographic computation of the scattering amplitude for Deeply Virtual Compton Scattering (DVCS) processe, as a function of the Mandelstam invariant $t$. We show that it is possible to describe simultaneously the differential cross-section and total cross-section of DVCS data with a single holographic model for the pomeron. Using data from H1-ZEUS we obtained a $χ^2_{dof} \sim 1.5$ for the best fit to the data.
description: 12 pages, 5 figures, accepted in Physics Letters B
Low energy theory of disordered graphene
Creators: name: Altland, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At low values of external doping graphene displays a wealth of unconventional transport properties. Perhaps most strikingly, it supports a robust 'metallic' regime, with universal conductance of the order of the conductance quantum. We here apply a combination of mean field and bosonization methods to explore the large scale transport properties of the system. We find that, irrespective of the doping level, disordered graphene is subject to common mechanisms of Anderson localization. However, at low doping a number of renormalization mechanisms conspire to protect the conductivity of the system, to an extend that strong localization may not be seen even at temperatures much smaller than those underlying present experimental work.
description: 4 pages
Per l’analisi del frammento di Laberio 80 R.3 (99 Bonaria2; 52 Panayotakis) e in modo particolare dell’aggettivo 'bibosa'
Creators: name: Molinelli, Marco
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Forschungen über die rechtlichen Grundlagen der römischen Außenbeziehungen während der Republik bis zum Beginn des Prinzipats
Creators: name: Zack, Andreas
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
ADHD medication use and injuries among children, adolescents, and adults: a within-individual study
Creators: name: De Vries, Ymkje Anna
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Psychiatry and Psychology
subject: Medicine and Health Sciences

description: In this study, we aim to conduct a within-individual investigation of the association between ADHD medication use and the risk of unintentional and intentional injuries. We will focus particularly on differences between injury types (unintentional vs. self-harm vs. violence) and age groups (children, adolescents, younger adults, and older adults). We will additionally examine the effect of adherence to medication.
The $\dot{M} - M$ relationship in pre-main sequence stars
Creators: name: Clarke, C. J.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the recent data and analysis of Natta et al. concerning the accretion rate on to young stars as a function of stellar mass, and conclude that the apparently steep dependence of accretion rate on mass is strongly driven by selection/detection thresholds. We argue that a convincing demonstration of a physical relationship between accretion and stellar mass requires further studies which, as is the case for Natta et al., include information on upper limits, and which quantify the possible incompleteness of the sample, at both low and high accretion rates. We point out that the distribution of detections in the ($M, \dot{M}$)-plane can in principle be used to test conventional accretion disc evolutionary models, and that higher sensitivity observations might be able to test the hypothesis of accelerated disc clearing at late times.
description: accepted for publication in MNRAS
Multiple copy combining schemes for the additive white Gaussian noise channel
Creators: name: Lam, Carson Y.H.
Publisher: name: University of British Columbia
Year: 2009

description: A generalized version of a memory automatic repeat request (ARQ) scheme [15-221 using hard, soft, and completely soft detection is examined. The communication channel is modeled as an additive white Gaussian noise (AWGN) channel. The following six combining schemes are considered. In Scheme 1, error detection is performed on each of the n received copies. In Scheme 2, all n copies are combined and error detection is performed on the resulting packet. Scheme 3 uses Scheme 1 followed by Scheme 2 (if decoding using Scheme 1 is not successful). In Scheme 4, each incoming packet is combined with the copies received so far, and the resulting combined packet is checked for errors. Scheme 5 uses Schemes 1 followed by Scheme 4. The last scheme, Scheme 6, attempts decoding on up to all 2n- I possible combinations of the received copies. For an arbitrary detector quantization, analytic expressions for the retransmission probability, PϜ of Scheme 3 are derived, and numerical procedures for evaluating the PϜ of Schemes 4, 5 and 6 are described. Numerical examples showing the dependence of PϜ on various parameters, such as the signal to noise ratio (SNR), number of transmissions n, number of quantization levels M and packet length L are given. Although Scheme 6 has the lowest PϜ its decoding complexity increases exponentially with n. The six combining schemes are applied to the Weldon ARQ scheme [13,14,22] It is found that the throughput T is generally improved using multiple copy combining schemes. The throughput can be further increased by using a soft detector. For block error rates BKER > 0.5 and soft detectors, the throughputs of Schemes 2 to 6 are typically higher than that of an ideal selective repeat ARQ system with no packet combining. In general, Scheme 3 appears to be a good choice among all the six schemes with a good performance and a simple decoder structure.
Tidal Effects on the Radial Velocities of V723 Mon: Additional Evidence for a Dark $3\,M_\odot$ Companion
Creators: name: Masuda, Kento
name: Hirano, Teruyuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Jayasinghe et al. (2021) identified a dark $\approx 3\,M_\odot$ companion on a nearly edge-on $\approx 60\,\mathrm{day}$ orbit around the red giant star V723 Monoceros as a black hole candidate in the mass gap. This scenario was shown to explain most of the data presented by Jayasinghe et al. (2021), except for periodic radial velocity (RV) residuals from the circular Keplerian model. Here we show that the RV residuals are explained by orbital phase-dependent distortion of the absorption line profile associated with changing visible fractions of the approaching and receding sides of the red giant star, whose surface is tidally deformed by and rotating synchronously with the dark companion. Our RV model constrains the companion mass $M_\bullet = 2.95\pm0.17\,M_\odot$ and orbital inclination $i=82.9^{+7.0}_{-3.3}\,\mathrm{deg}$ (medians and 68.3% highest density intervals of the marginal posteriors) adopting the radius of the red giant $24.0\pm0.9\,R_\odot$ as constrained from its SED and distance. The analysis provides independent support for the companion mass from ellipsoidal variations and the limits on the companion's luminosity from the absence of eclipses both derived by Jayasinghe et al. (2021). We also show that a common scheme to evaluate the tidal RV signal as the flux-weighted mean of the surface velocity field can significantly underestimate its amplitude for RVs measured with a cross-correlation technique, and present a modified prescription that directly models the distorted line profile and its effects on the measured RVs. The formulation will be useful for estimating the component masses and inclinations in other similar binaries.
description: 13 pages, 6 figures, accepted for publication in ApJ Letters
Spontaneously scalarized black holes in dynamical Chern-Simons gravity: dynamics and equilibrium solutions
Creators: name: Doneva, Daniela D.
name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the present paper, we construct spontaneously scalarized rotating black hole solutions in dynamical Chern-Simons (dCS) gravity by following the scalar field evolution in the decoupling limit. For the range of parameters where the Kerr black hole becomes unstable within dCS gravity the scalar field grows exponentially until it reaches an equilibrium configuration that is independent of the initial perturbation. Interestingly, the $\mathbb{Z}_2$ symmetry of the scalar field is broken and a strong maximum around only one of the rotational axes can be observed. The black hole scalar charge is calculated for two coupling functions suggesting that the main observations would remain qualitatively correct even if one considers coupling functions/coupling parameters producing large deviations from the Kerr solution beyond the decoupling limit approximation.
description: 12 pages, 4 figures
Anomalies, effective action and Hawking temperatures of a Schwarzschild black hole in the isotropic coordinates
Creators: name: Wu, Shuang-Qing
name: Peng, Jun-Jin
name: Zhao, Zhan-Yue
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Motivated by the universality of Hawking radiation and that of the anomaly cancellation technique as well as that of the effective action method, we investigate the Hawking radiation of a Schwarzschild black hole in the isotropic coordinates via the cancellation of gravitational anomaly. After performing a dimensional reduction from the four-dimensional isotropic Schwarzschild metric, we show that this reduction procedure will, in general, result in two classes of two-dimensional effective metrics: the conformal equivalent and the inequivalent ones. For the physically equivalent class, the two-dimensional effective metric displays such a distinct feature that the determinant is not equal to the unity ($\sqrt{-g} \neq 1$), but also vanishes at the horizon, the latter of which possibly invalidates the anomaly analysis there. ... This is an updated version to replace our e-print arXiv:0709.0044 [hep-th]. Abstract is too long to exceed the limit of 24 lines by arXiv.
description: 26 pages. Published version, with references updated
Unsupervised classification of cell imaging data using the quantization error in a Self Organizing Map
Creators: name: Dresp-Langley, Birgitta
name: Wandeto, JM
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: This study exploits previously demonstrated properties such as sensitivity to the spatial extent and the intensity of local image contrast of the quantization error in the output of a Self Organizing Map (SOM QE). Here, the SOM QE is applied to double color staining based cell viability data in 96 image simulations. The results show that the SOM QE consistently and in only a few seconds detects fine regular spatial increases in relative amounts of RED or GREEN pixel staining across the test images, reflecting small, systematic increases or decreases in the percentage of theoretical cell viability below the critical threshold. Such small changes may carry clinical significance, but are almost impossible to detect by human vision. Moreover, we demonstrate a clear sensitivity of the SOM QE to differences in the relative physical luminance (Y) of the colors, which here translates into a RED GREEN color selectivity. Across differences in relative luminance, the SOM QE exhibits consistently greater sensitivity to the smallest spatial increases in RED image pixels compared with smallest increases of identical spatial extents in GREEN image pixels. Further selective color contrast studies on simulations of biological imaging data will allow generating increasingly larger benchmark datasets and, ultimately, unravel the full potential of fast, economic, and unprecedentedly precise biological data analysis using the SOM QE.
description: arXiv admin note: substantial text overlap with arXiv:2011.05209, arXiv:2011.03970
STAGES OF THE IMPLEMENTATION OF THE EFFECTIVENESS OF THE WORK OF EDUCATING YOUNG PEOPLE IN THE SPIRIT OF MILITARY PATRIOTISM
Creators: name: Ataxanov, Shuxrat
Publisher: name: Zenodo
Year: 2023

description: This article describes the stages of the implementation of the effectiveness of the work of educating young people in the spirit of military patriotism, the formation and strengthening of modern concepts about the protection of the Motherland, its preservation, the worldview, personal beliefs on this issue, the preparation of young people for military service, the organization of educational activities that help.
Adriano e il Serapeo di Alessandria: l’intervento e l’ideologia politica
Creators: name: Giudice, Alberto
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
$^{1}$H-NMR spin-echo measurements of the static and dynamic spin properties in $λ$-(BETS)$_{2}$FeCl$_{4}$
Creators: name: Wu, Guoqing
name: Ranin, P.
name: Gaidos, G.
name: Clark, W. G.
name: Brown, S. E.
name: Balicas, L.
name: Montgomery, L. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: $^{1}$H-NMR spin-echo measurements of the spin-echo decay $M(2τ)$ with a decay rate 1/$T_{2}$ and the frequency shift $Δν/ν_{0}$ under applied magnetic field $\mathbf{B}$$_{0}$ = 9 T along the a-axis over a temperature range 2.0$-$180 K are reported for a single crystal of the organic conductor $λ$-(BETS)$_{2}$FeCl$_{4}$. It provides the spin dynamic and static properties in the paramagnetic metal (PM) and antiferromagnetic insulator (AFI) states as well as across the PM$-$AFI phase transition. A large slow beat structure in the spin-echo decay is observed with a typical beat frequency of $f$ $\sim$ 7 kHz and it varies across the spectrum. Its origin is attributed to the $^{1}$H$-$$^{1}$H dipole interactions rather than to the much larger dipolar field contribution from the Fe$^{3+}$ electrons (spin $S$ = 5/2). A simple phenomenological model provides an excellent fit to the data. The dominant $^{1}$H-NMR frequency shift comes from the dipolar field from the 3d Fe$^{3+}$ ions, and the Fe$^{3+}$ $-$ Fe$^{3+}$ exchange interactions ($J_{0}$) ($J_{0} $ includes the d$-$d exchange interactions through the $π-$electrons) have a substantial effect to the local field at the proton sites expecially at low temperatures. A good fit is obtained with $J_{0}$ = - 1.7 K. The data of the spin-echo decay rate 1/$T_{2}$ indicates that there is a significant change in the slow fluctuations of the local magnetic field at the $^{1}$H-sites on traversing the PM to AFI phase. This evidence supports earlier reports that the PM$-$AFI phase transition in $λ$-(BETS)$_{2}% $FeCl$_{4} $ is driven magnetically and first order.
description: 9 pages, 10 figures, resubmitted to Phys. Rev. B in response to comments of Editor and reviewers on March 23, 2007
„Erst erfreuen, dann belehren“. Eine preußische Bildungsdebatte und die Anfänge des öffentlichen Museums in Berlin
Creators: name: Krumeich, Kirsten
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Supplementary document for Electro-optic high-speed optical Beam shifting based on Lithium Niobate tapered waveguide - 5779532.pdf
Creators: name: Shang, Jumei
name: Chen, Huajiang
name: Sui, Zhan
name: Lin, Qijing
name: Luo, Kaiwen
name: yu, lingyun
name: Qiu, Wentao
name: Guan, Heyuan
name: Chen, Zhe
name: Lu, Huihui
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: supplementary document
R. Malcolm Errington: A History of the Hellenistic World. 323-30 B.C. (Oxford 2008) – Some Notes on the Illustrations –
Creators: name: Salzmann, Dieter
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Finite size effects and loss of self-averageness in the relaxational dynamics of the spherical Sherrington-Kirkpatrick model
Creators: name: Barbier, Damien
name: Pimenta, Pedro H. de Freitas
name: Cugliandolo, Leticia F.
name: Stariolo, Daniel A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We revisit the gradient descent dynamics of the spherical Sherrington-Kirkpatrick ($p=2$) model with finite number of degrees of freedom. For fully random initial conditions we confirm that the relaxation takes place in three time regimes: a first algebraic one controlled by the decay of the eigenvalue distribution of the random exchange interaction matrix at its edge in the infinite size limit; a faster algebraic one determined by the distribution of the gap between the two extreme eigenvalues; and a final exponential one determined by the minimal gap sampled in the disorder average. We also analyse the finite size effects on the relaxation from initial states which are almost projected on the saddles of the potential energy landscape, and we show that for deviations scaling as $N^{-ν}$ from perfect alignment the system escapes the initial configuration in a time-scale scaling as $\ln N$ after which the dynamics no longer "self-averages" with respect to the initial conditions. We prove these statements with a combination of analytic and numerical methods.
description: 22 pages, 8 figures
BioContainers: from tools to services – challenges and opportunities
Creators: name: Grüning, Björn
name: BioContainers Community
Publisher: name: F1000 Research Limited
Year: 2019

description: Presentation of ELIXIR Implementation Study 'Development of Architecture for Software Containers at ELIXIR and its use by EXCELERATE use-case communities' at the ELIXIR All Hands meeting 2019 in Lisbon, Portugal.
Prolegomeni a una nuova raccolta dei frammenti di Clearco di Soli
Creators: name: Dorandi, Tiziano
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 14 (2011): Göttinger Forum für Altertumswissenschaft
Carbon Monoxide in Comet 9P/Tempel 1 before and after the Deep Impact Encounter
Creators: name: Feldman, Paul D.
name: Lupu, Roxana E.
name: McCandliss, Stephan R.
name: Weaver, Harold A.
name: A'Hearn, Michael F.
name: Belton, Michael J. S.
name: Meech, Karen J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the goals of the Hubble Space Telescope program to observe periodic comet 9P/Tempel 1 in conjunction with NASA's Deep Impact mission was to study the generation and evolution of the gaseous coma resulting from the impact. For this purpose, the Solar Blind Channel of the Advanced Camera for Surveys was used with the F140LP filter which is sensitive primarily to the ultraviolet emission (>1400 A) from the CO Fourth Positive system. Following the impact we detected an increase in brightness, which if all due to CO corresponds to 1.5 x 10^31 molecules or a mass of 6.6 x 10^5 kg, an amount that would normally be produced by 7-10 hours of quiescent outgassing from the comet. This number is less than or equal to 10% of the number of water molecules excavated, and suggests that the volatile content of the material excavated by the impact did not differ significantly from the surface or near sub-surface material responsible for the quiescent outgassing of the comet.
description: 10 pages, 4 postscript figures. Accepted for publication in ApJ (Letters)
Alexandra W. Busch, Militär in Rom. Militärische und paramilitärische Einheiten im kaiserzeitlichen Stadtbild
Creators: name: Töpfer, Kai M.
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Alexandra W. Busch, Militär in Rom. Militärische und paramilitärische Einheiten im kaiserzeitlichen Stadtbild. Palilia 20. Wiesbaden: Reichert Verlag 2012, 184 S., 90 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 15 (2012): Göttinger Forum für Altertumswissenschaft
Microstrip resonators for high speed opitical commutator switches
Creators: name: Chen, Mingche
Publisher: name: University of British Columbia
Year: 2008

description: Using a planar microwave resonator as the electrode for modulating a high speed Y-branch optical commutator switch is a novel idea. For this purpose a "cul-de-sac" shape microstrip resonator is suggested and studied both theoretically and experimentally. It has two substantially parallel legs unconnected on one end and connected via an open ring on the other. It is the parallel legs that work as the electrode. Because of the stored energy the potential difference between the two legs can be much higher than the source voltage. Therefore, the resonator electrode has significant advantages over other kinds of electrodes. By using a resonator electrode the optical switch can operate at high frequencies while consuming little power. The field distribution, discontinuity effects, and the radiation loss of the "cul-de-sac" resonator are discussed. The structure parameters of the "cul-de-sac" resonator, were optimized for maximum output voltage and minimum consumed power using a computer program. The source power can be coupled into the resonator by tap point coupling through a quarter-wave-length transformer. The input impedance of the resonator and the coupling coefficient β were derived as functions of the coupling position θ using an equivalent lumped circuit. Then an important relationship between the output voltage V0,the source voltage Vs„ and the unloaded quality factor Qu. is derived which tells us that Vo is proportional to the product of Va, and the square root of Qu. From this relationship we proved that the most efficient and practical coupling condition is β<1. [More abstract follows]
Nadin Burkhardt – Rudolf H.W. Stichel (Hgg.) Die antike Stadt im Umbruch
Creators: name: Uytterhoeven, Inge
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Nadin Burkhardt – Rudolf H.W. Stichel (Hgg.) Die antike Stadt im Umbruch. Kolloquium in Darmstadt, 19. bis 20. Mai 2006. Wiesbaden: Reichert Verlag 2010, 288 S., 86 s/w-Abb., 13 farb. Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 15 (2012): Göttinger Forum für Altertumswissenschaft
UVscope and its application aboard the ASTRI-Horn telescope
Creators: name: Maccarone, M. C.
name: La Rosa, G.
name: Catalano, O.
name: Giarrusso, S.
name: Segreto, A.
name: Biondo, B.
name: Bruno, P.
name: Gargano, C.
name: Grillo, A.
name: Impiombato, D.
name: Russo, Fr.
name: Sottile, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: UVscope is an instrument, based on a multi-pixel photon detector, developed to support experimental activities for high-energy astrophysics and cosmic ray research. The instrument, working in single photon counting mode, is designed to directly measure light flux in the wavelengths range 300-650~nm. The instrument can be used in a wide field of applications where the knowledge of the nocturnal environmental luminosity is required. Currently, one UVscope instrument is allocated onto the external structure of the ASTRI-Horn Cherenkov telescope devoted to the gamma-ray astronomy at very high energies. Being co-aligned with the ASTRI-Horn camera axis, UVscope can measure the diffuse emission of the night sky background simultaneously with the ASTRI-Horn camera, without any interference with the main telescope data taking procedures. UVscope is properly calibrated and it is used as an independent reference instrument for test and diagnostic of the novel ASTRI-Horn telescope.
description: Published (Open Access) in "Experimental Astronomy"
Mischa Meier (Hg.), Justinian. Neue Wege der Forschung
Creators: name: Grünbart, Michael
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Mischa Meier (Hg.), Justinian. Neue Wege der Forschung. Darmstadt: Wissenschaftliche Buchgesellschaft 2011, 289 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 15 (2012): Göttinger Forum für Altertumswissenschaft
A variational model for the hyperfine resolved spectrum of VO in its ground electronic state
Creators: name: Qu, Qianwei
name: Yurchenko, Sergei N.
name: Tennyson, Jonathan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A variational model for the infra-red spectrum of VO is presented which aims to accurately predict the hyperfine structure within the VO $\mathrm{X}\,^4Σ^-$ electronic ground state. To give the correct electron spin splitting of the $\mathrm{X}\,^4Σ^-$ state, electron spin dipolar interaction within the ground state and the spin-orbit coupling between $\mathrm{X}\,^4Σ^-$ and two excited states, $\mathrm{A}\,^4Π$ and $\mathrm{1}\,^2Σ^+$, are calculated ab initio alongside hyperfine interaction terms. Four hyperfine coupling terms are explicitly considered: Fermi-contact interaction, electron spin-nuclear spin dipolar interaction, nuclear spin-rotation interaction and nuclear electric quadrupole interaction. These terms are included as part of a full variational solution of the nuclear-motion Schrödinger equation performed using program DUO, which is used to generate both hyperfine-resolved energy levels and spectra. To improve the accuracy of the model, ab initio curves are subject to small shifts. The energy levels generated by this model show good agreement with the recently derived empirical term values. This and other comparisons validate both our model and the recently developed hyperfine modules in DUO.
UP - 10 Economy, demography and urbanization, The urban policy context in mid-sized metropolitan areas – Europe
Creators: name: Barati-Stec, Izabella
Publisher: name: The School of Public Policy Publications
Year: 2019

description: The cases of four capitals, Budapest, Zagreb, Tbilisi and Belgrade presented in this paper help to understand the challenges faced by cities in the post-communist part of Europe. Budapest in Hungary and Zagreb in Croatia are cities in member states of the European Union (EU). Belgrade is the capital of Serbia, a candidate country for membership in the EU and Tbilisi in Georgia is a city in a Eastern Partnership Agreement (EaP). All cities are capitals and not only is their recent history similar, but their early development also shows similarities due to their geographical settings, forming gates between East and West and being melting pots of cultures, religions, and traditions. All inherited a strong vertical hierarchy of political and economic structures and experienced multiple transitions since 1990. The transition from planned to market economy, from one party politics to democratic elections prompted important changes that affected these capital cities. The FDI inflow strongly influenced their economic development after the transition. While their population is becoming older, large cities also started to shrink for several reasons. The fertility rate is falling below the replacement level and instead of people moving from rural areas to the cities, citizens started migrating in the opposite direction. In addition, the urban poor are not able to maintain expensive city housing. The first chapter gives an overview of the four countries’ governance systems and economic development levels. The following sections introduce the four capital cities. Each section follows the same structure, the introduction and history section is followed by the demographic data, then the economic power of the city, its position and relations within the public administration system, the public finances of the country, and of the capital, and finally a discussion of land use issues. Data collection was challenging in many cases. Some cities did not disclose laws or budget information, or only partially disclosed. Some provided all data but merged with abundant non-relevant information and in a format, that makes it impossible to research.
description: The School of Public Policy Publications, Vol 12 (2019)
Ralf Krumeich – Christian Witschel (Hgg.), Die Akropolis von Athen im Hellenismus und in der römischen Kaiserzeit
Creators: name: Maschek, Dominik
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ralf Krumeich – Christian Witschel (Hgg.), Die Akropolis von Athen im Hellenismus und in der römischen Kaiserzeit. Wiesbaden: Reichert Verlag 2010, 455 S., 80 Bildtafeln (s/w und Farbe), 1 Klapptafel
description: Göttinger Forum für Altertumswissenschaft, Bd. 15 (2012): Göttinger Forum für Altertumswissenschaft
Stability of Closed Timelike Curves in Goedel Universe
Creators: name: Rosa, Valeria M.
name: Letelier, Patricio S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study, in some detail, the linear stability of closed timelike curves in the Goedel metric. We show that these curves are stable. We present a simple extension (deformation) of the Goedel metric that contains a class of closed timelike curves similar to the ones associated to the original Goedel metric. This extension correspond to the addition of matter whose energy-momentum tensor is analyzed. We find the conditions to have matter that satisfies the usual energy conditions. We study the stability of closed timelike curves in the presence of usual matter as well as in the presence of exotic matter (matter that does satisfy the above mentioned conditions). We find that the closed timelike curves in Goedel universe with or whithout the inclusion of regular or exotic matter are also stable under linear perturbations. We also find a sort of structural stability.
description: 12 pages, 11 figures, RevTex, several typos corrected. GRG, in press
Does status motivation influence career choice?
Creators: name: De Paiva Costa, Tainah Porpino
name: Castro, Felipe Nalon
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Other Psychology
subject: Personality and Social Contexts
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Evolutionary psychology
subject: fundamental motives
subject: status

description: Respect and admiration - status - can bring social benefits and differential access to resources. It is believed that humans have developed specific motivations for dealing with this issue. Our aim is to investigate if there is a relationship between status motivation and higher education course choice. Participants provided information about their social class, status motivation, childhood environmental unpredictability, personality traits, and assessed the social status of the chosen higher education course. Taken together, our results suggest that although status motivation can influence the career choice process, factors related to the presence of resources and psychological characteristics related to socialization have no effect on the choice of more admired and respected professions. Our work expands knowledge about status motivation outside the North American and European context and allows a new look at the career choice process.
Weyl point immersed in a continuous spectrum: an example from superconducting nanostructures
Creators: name: Chen, Y.
name: Nazarov, Y. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A Weyl point in a superconducting nanostructure is a generic minimum model of a topological singularity at low energies. We connect the nanostructure to normal leads thereby immersing the topological singularity in the continuous spectrum of the electron states in the leads. This sets another simple and generic model useful to comprehend the modification of low-energy singularity in the presence of continuous spectrum. The tunnel coupling to the leads gives rise to new low energy scale $Γ$ at which all topological features are smoothed. We investigate superconducting and normal currents in the nanostructure at this scale. We show how the tunnel currents can be used for detection of the Weyl point. Importantly, we find that the topological charge is not concentrated in a point but rather is spread over the parameter space in the vicinity of the point. We introduce and compute the resulting topological charge density. We also reveal that the pumping to the normal leads helps to detect and investigate the topological effects in the vicinity of the point.
description: 11 pages, 9 figures
Oliver Stoll, Zum Ruhme Athens. Wissen zum Wohl der Polis. Xenophons Ideal einer Führungspersönlichkeit und Athens Reiterei im 'Hipparchikos'
Creators: name: Blank, Thomas
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Oliver Stoll, Zum Ruhme Athens. Wissen zum Wohl der Polis. Xenophons Ideal einer Führungspersönlichkeit und Athens Reiterei im 'Hipparchikos' Altertumswissenschaften/Archäologie 3. Berlin: Frank & Timme Verlag 2010, 100 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 15 (2012): Göttinger Forum für Altertumswissenschaft