cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Korana Deppmeyer, Kaisergruppen von Vespasian bis Konstantin. Eine Untersuchung zu Aufstellungskontexten und Intentionen der statuarischen Präsentation kaiserlicher Familien
Creators: name: Fittschen, Klaus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Korana Deppmeyer, Kaisergruppen von Vespasian bis Konstantin. Eine Untersuchung zu Aufstellungskontexten und Intentionen der statuarischen Präsentation kaiserlicher Familien. Teilband I: Text (339 S., 10 Abb., 10 Tab.). Teilband II: Katalog (493 S., Abb. und Pläne). Schriftenreihe Antiquitates, Archäologische Forschungsergebnisse, Band 47.1-2. Hamburg: Verlag Dr. Kovač 2008
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Quantum confinement corrections to the capacitance of gated one-dimensional nanostructures
Creators: name: Indlekofer, K. M.
name: Knoch, J.
name: Appenzeller, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: With the help of a multi-configurational Green's function approach we simulate single-electron Coulomb charging effects in gated ultimately scaled nanostructures which are beyond the scope of a selfconsistent mean-field description. From the simulated Coulomb-blockade characteristics we derive effective system capacitances and demonstrate how quantum confinement effects give rise to corrections. Such deviations are crucial for the interpretation of experimentally determined capacitances and the extraction of application-relevant system parameters.
Nonreciprocal high-order sidebands induced by magnon Kerr nonlinearity
Creators: name: Wang, Mei
name: Kong, Cui
name: Sun, Zhao-Yu
name: Zhang, Duo
name: Wu, Yu-Ying
name: Zheng, Li-Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an effective approach for creating robust nonreciprocity of high-order sidebands, including the first-, second- and third-order sidebands, at microwave frequencies. This approach relies on magnon Kerr nonlinearity in a cavity magnonics system composed of two microwave cavities and one yttrium iron garnet (YIG) sphere. By manipulating the driving power applied on YIG and the frequency detuning between the magnon mode in YIG and the driving field, the effective Kerr nonlinearity can be strengthened, thereby inducing strong transmission non-reciprocity. More interestingly, we find the higher the sideband order, the stronger the transmission nonreciprocity marked by the higher isolation ratio in the optimal detuning regime. Such a series of equally-spaced high-order sidebands have potential applications in frequency comb-like precision measurement, besides structuring high-performance on-chip nonreciprocal devices.
Verbs of Motion and Arrival in Mixtec
Creators: name: Macaulay, Monica
name: Hinton, Leanne
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Pre-print for proceedings of paper presented at the Eighth Annual Meeting of the Berkeley Linguistics Society, photocopy of typed original.
NeuroEDDU protocols_iPSC culture
Creators: name: Chen, Xiuqing
name: Rocha, Cecilia
name: Rao, Trisha
name: Durcan, Thomas M
Publisher: name: Zenodo
Year: 2019
Subjects: induced pluripotent stem cells
iPSCs

description: This protocol describes how to: Culture human induced pluripotent stem cells (iPSCs) in mTeSR1 or Essential 8 media Freeze cryovials of iPSCs
False vacuum decay by self-consistent bounces in four dimensions
Creators: name: Baacke, Jurgen
name: Kevlishvili, Nina
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute bounce solutions describing false vacuum decay in a Phi**4 model in four dimensions with quantum back-reaction. The back-reaction of the quantum fluctuations on the bounce profiles is computed in the one-loop and Hartree approximations. This is to be compared with the usual semiclassical approach where one computes the profile from the classical action and determines the one-loop correction from this profile. The computation of the fluctuation determinant is performed using a theorem on functional determinants, in addition we here need the Green' s function of the fluctuation operator in oder to compute the quantum back-reaction. As we are able to separate from the determinant and from the Green' s function the leading perturbative orders, we can regularize and renormalize analytically, in analogy of standard perturbation theory. The iteration towards self-consistent solutions is found to converge for some range of the parameters. Within this range the corrections to the semiclassical action are at most a few percent, the corrections to the transition rate can amount to several orders of magnitude. The strongest deviations happen for large couplings, as to be expected. Beyond some limit, there are no self-consistent bounce solutions.
description: 45 pages, 9 figures
Black-Hole Attractors in N=1 Supergravity
Creators: name: Andrianopoli, Laura
name: D'Auria, Riccardo
name: Ferrara, Sergio
name: Trigiante, Mario
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the attractor mechanism for N=1 supergravity coupled to vector and chiral multiplets and compute the attractor equations of these theories. These equations may have solutions depending on the choice of the holomorphic symmetric matrix f_{ΛΣ} which appears in the kinetic lagrangian of the vector sector. Models with non trivial electric-magnetic duality group which have or have not attractor behavior are exhibited. For a particular class of models, based on an N=1 reduction of homogeneous special geometries, the attractor equations are related to the theory of pure spinors.
description: 25 pages, typos corrected, formulas added
Linda-Maria Günther, Herodes der Große
Creators: name: Wesch-Klein, Gabriele
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Linda-Maria Günther, Herodes der Große. Gestalten der Antike, Darmstadt: Wissenschaftliche Buchgesellschaft 2005, 279 S., 17 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
The classification of acoustic emission signals via artificial neural network
Creators: name: Yang, Jian
Publisher: name: University of British Columbia
Year: 2008

description: Automatic identification of wood species is a long desired goal in the pulp and paper industry. Motivated by this, researchers have investigated Pattern Recognition (PR) for the classification of wood chip species based on acoustic emission signals. In this thesis, a new Artificial Neural Network (ANN) approach is proposed to perform this task. One of the purposes of the thesis is to explore the connection between traditional methods of statistics and modern approaches of neural networks regarding pattern recognition. We attempt to understand how the neural networks perform signal processing functions such as the Karhunen-Loeve Transform (KLT) and pattern recognition functions such as the Principal Component Analysis (PCA). The configuration of the classifier is a multilayer feed forward network in which the supervised and unsupervised learning algorithms are implemented. Based on the established orthogonal data space, feature extraction and data compression are accomplished through the training process. The reconstructed data, which is in orthogonal and compressed form with maximal variance, are used to improve the classification efficiency. Since the primary goal of the thesis is to identify wood species from their acoustic emission, simulations are used to characterize classification accuracy, classification efficiency, noise immunity, and generalization capability.
The Timing of Bid Placement and Extent of Multiple Bidding: An Empirical Investigation Using eBay Online Auctions
Creators: name: Borle, Sharad
name: Boatwright, Peter
name: Kadane, Joseph B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Online auctions are fast gaining popularity in today's electronic commerce. Relative to offline auctions, there is a greater degree of multiple bidding and late bidding in online auctions, an empirical finding by some recent research. These two behaviors (multiple bidding and late bidding) are of ``strategic'' importance to online auctions and hence important to investigate. In this article we empirically measure the distribution of bid timings and the extent of multiple bidding in a large set of online auctions, using bidder experience as a mediating variable. We use data from the popular auction site \url{www.eBay.com} to investigate more than 10,000 auctions from 15 consumer product categories. We estimate the distribution of late bidding and multiple bidding, which allows us to place these product categories along a continuum of these metrics (the extent of late bidding and the extent of multiple bidding). Interestingly, the results of the analysis distinguish most of the product categories from one another with respect to these metrics, implying that product categories, after controlling for bidder experience, differ in the extent of multiple bidding and late bidding observed in them. We also find a nonmonotonic impact of bidder experience on the timing of bid placements. Experienced bidders are ``more'' active either toward the close of auction or toward the start of auction. The impact of experience on the extent of multiple bidding, though, is monotonic across the auction interval; more experienced bidders tend to indulge ``less'' in multiple bidding.
description: Published at http://dx.doi.org/10.1214/088342306000000123 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Barbara Pferdehirt (Hrsg.), Die Entstehung einer gemeinsamen Kultur in den Nordprovinzen des Römischen Reiches von Britannien bis zum Schwarzen Meer
Creators: name: Kreuz, Patric-Alexander
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Barbara Pferdehirt (Hrsg.), Die Entstehung einer gemeinsamen Kultur in den Nordprovinzen des Römischen Reiches von Britannien bis zum Schwarzen Meer. Mosaiksteine, Forschungen am Römisch-Germanischen Zentralmuseum, Bd. 3. Mainz: RGZM 2007, 44 S., 94 Ill., 57 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Simulating quench dynamics on a digital quantum computer with data-driven error mitigation
Creators: name: Sopena, Alejandro
name: Gordon, Max Hunter
name: Sierra, Germán
name: López, Esperanza
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Error mitigation is likely to be key in obtaining near term quantum advantage. In this work we present one of the first implementations of several Clifford data regression based methods which are used to mitigate the effect of noise in real quantum data. We explore the dynamics of the 1-D Ising model with transverse and longitudinal magnetic fields, highlighting signatures of confinement. We find in general Clifford data regression based techniques are advantageous in comparison with zero-noise extrapolation and obtain quantitative agreement with exact results for systems of 9 qubits with circuit depths of up to 176, involving hundreds of CNOT gates. This is the largest systems investigated so far in a study of this type. We also investigate the two-point correlation function and find the effect of noise on this more complicated observable can be mitigated using Clifford quantum circuit data highlighting the utility of these methods.
description: 16 pages, 13 figures
POSTER: Fast Parallel Algorithms for Convex Hull and Smallest Enclosing Ball
Creators: name: Yiqiu Wang
name: Shangdi Yu
name: Laxman Dhulipala
name: Gu, Yan
name: Shun, Julian
Publisher: name: Zenodo
Year: 2021

description: Instructions Please refer to the README file inside the attached artifact. Abstract We propose new shared-memory parallel algorithms, techniques, and implementations for two classic problems in computational geometry: convex hull and smallest enclosing ball. Both problems have numerous practical applications in geometry processing, computer graphics and robotics. We present a new parallel convex hull algorithm based on a reservation technique to enable parallel modifications to the hull. We also provide the first parallel implementations of the randomized incremental convex hull algorithm as well as a divide-and-conquer convex hull algorithm in $\mathbb{R}^3$. For the smallest enclosing ball problem, we propose a new sampling-based algorithm to quickly reduce the size of the data set. We also provide the first parallel implementation of Welzl's classic algorithm. For all of these algorithms, we present optimizations to reduce work and parallelism overheads. In addition, this paper provides the first comprehensive experimental evaluation of different parallel algorithms for solving each of the two problems (the algorithms described above as well as existing ones). On 36 cores with two-way hyper-threading, our divide-and-conquer convex hull algorithm achieves up to 44.7x self-relative speedup and up to 559x speedup against the best existing sequential implementation. Our smallest enclosing ball algorithm using our sampling-based algorithm achieves up to 27.1x self-relative speedup and up to 178x speedup against the best existing sequential implementation. Finally, we describe our new ParGeo framework for parallel computational geometry, which includes the algorithms studied in this paper as well as algorithms for other geometry problems.
Daniel Mögling's sunspot observations in 1626 - 1629: A manuscript reference for the solar activity before the Maunder Minimum
Creators: name: Hayakawa, Hisashi
name: Iju, Tomoya
name: Murata, Koji
name: Besser, Bruno P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The sunspot groups have been observed since 1610 and their numbers have been used for evaluating the amplitude of solar activity. Daniel Mögling recorded his sunspot observations for more than 100 days in 1626 - 1629 and formed a significant dataset of sunspot records before the Maunder Minimum. Here, we have analysed his original manuscripts in the Universitäts- und Landesbibliothek Darmstadt (ULBD) to review Mögling's personal profile and observational instruments and derive number and positions of the sunspot groups. In his manuscript, we have identified 134 days with an exact sunspot group number and 3 days of additional descriptions. Our analyses have completely revised their observational dates and group number, added 19 days of hitherto overlooked observations, and removed 8 days of misinterpreted observations. We have also revisited sunspot observations of Schickard and Hortensius and revised their data. These results have been compared with the contemporary observations. Moreover, we have derived the sunspot positions from his sunspot drawings and located them at 2°-23° in the heliographic latitude in both solar hemispheres. Contextualised with contemporary observations, these results indicate their temporal migration to lower heliographic latitudes and emphasise its location in the declining phase of Solar Cycle -12 in the 1620s. His observations were probably conducted using a pinhole and camera obscura, which made Mögling likely underestimate the sunspot group number by >~ 33% - 52 %. This underestimation should be noted upon their comparison with the modern datasets.
description: 17 pages, 4 figures, and accepted for publication in the ApJ
Klaus Bringmann, Augustus. Gestalten der Antike / Augustus, Schriften, Reden und Aussprüche. Hrsg., übs. u. komm. von Klaus Bringmann und Dirk Wiegandt
Creators: name: Schlange-Schöningen, Heinrich
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Klaus Bringmann, Augustus. Gestalten der Antike. Darmstadt: Primus Verlag 2007, 303 S., 30 s/w-Abb. Rezension zu: Augustus, Schriften, Reden und Aussprüche. Hrsg., übs. u. komm. von Klaus Bringmann und Dirk Wiegandt. Texte zur Forschung, Bd. 91. Darmstadt: Wissenschaftliche Buchgesellschaft 2008, 336 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
STAN: A stuttering therapy analysis helper
Creators: name: Bayerl, Sebastian P.
name: Wenninger, Marc
name: Schmidt, Jochen
name: von Gudenberg, Alexander Wolff
name: Riedhammer, Korbinian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Stuttering is a complex speech disorder identified by repeti-tions, prolongations of sounds, syllables or words and blockswhile speaking. Specific stuttering behaviour differs strongly,thus needing personalized therapy. Therapy sessions requirea high level of concentration by the therapist. We introduceSTAN, a system to aid speech therapists in stuttering therapysessions. Such an automated feedback system can lower thecognitive load on the therapist and thereby enable a more con-sistent therapy as well as allowing analysis of stuttering overthe span of multiple therapy sessions.
A new method for estimating the number of motor units in a muscle
Creators: name: Slawnych, Michael Peter
Publisher: name: University of British Columbia
Year: 2008

description: A new method termed MUESA - Motor Unit Estimation based on Stochastic Activation - was developed for estimating the number of motor units in peripheral nerve/muscle systems. What distinguishes MUESA from other estimation methods is the manner in which it deals with "alternation" or probabilistic motor unit activation. Because of "alternation", incremental increases in the observed muscle potentials often can not be interpreted in terms of the successive activation of single motor units. With MUESA, we introduce a method that interprets the muscle potentials in the context of a probabilistic activation framework. In the MUESA method, the nerve is subjected to a number of constant-intensity stimulus trains, and the resultant muscle response sequences are decomposed into their constituent motor unit action potentials. In general, if a stimulus train results in the probabilistic activation of n motor units, we can expect to see up to 2 to the power of n different potentials, with each potential representing a unique combination of active and/or inactive motor units. If all 2 to the power of n potentials are indeed observed, the decomposition of the observed potential sequence into its constituent motor unit action potentials is trivial. For the majority of the cases in which the number of observed potentials is not an integer power of 2, we have developed a novel decomposition method based on the analysis of the relative firing rates of the motor units. MUESA was evaluated by examining the estimates obtained from both control and neurogenic subjects. We also examined a number of alternative estimation strategies that do not rely on sampling procedures used in all methods published to date. These alternative methods hold the promise of avoiding the inherent error associated with sampling.
The adaptive filter of the yeast galactose pathway
Creators: name: Smidtas, Serge
name: Schachter, Vincent
name: Kepes, Francois
Publisher: name: arXiv
Year: 2006
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: In the yeast Saccharomyces cerevisiae, the interplay between galactose, Gal3p, Gal80p and Gal4p determines the transcriptional status of the genes required for galactose utilization. After an increase in galactose concentration, galactose molecules bind onto Gal3p. This event leads via Gal80p to the activation of Gal4p, which then induces GAL3 and GAL80 gene transcription. Here we propose a qualitative dynamic model, whereby these molecular interaction events represent the first two stages of a functional feedback loop that closes with the capture of activated Gal4p by newly synthesized Gal3p and Gal80p, decreasing transcriptional activation and creating again the protein complex that can bind incoming galactose molecules. Based on the differential time scales of faster protein interactions versus slower biosynthetic steps, this feedback loop functions as a derivative filter where galactose is the input step signal, and released Gal4p is the output derivative signal. One advantage of such a derivative filter is that GAL genes are expressed in proportion to the cellular requirement. Furthermore, this filter adaptively protects the cellular receptors from saturation by galactose, allowing cells to remain sensitive to variations in galactose concentrations rather than to absolute concentrations. Finally, this feedback loop, by allowing phosphorylation of some active Gal4p, may be essential to initiate the subsequent long-term response.
Alexios G.C. Savvides – Benjamin Hendrickx (Hrsgg.), Encyclopaedic Prosopographical Lexicon of Byzantine History and Civilization (EPLBHC)
Creators: name: Schneider, Horst
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Alexios G.C. Savvides – Benjamin Hendrickx (Hrsgg.), Encyclopaedic Prosopographical Lexicon of Byzantine History and Civilization (EPLBHC). Volume 2 Baanes-Eznik von Kolb, assistant editor: Th. Sansaridou-Hendrickx. Turnhout: Brepols 2008, XXXII + 458 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Oscillating p-Branes
Creators: name: Clark, T. E.
name: Love, S. T.
name: Nitta, Muneto
name: ter Veldhuis, T.
name: Xiong, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the Poincare symmetries of D dimensional space-time due to the embedding of a p-brane with codimension N=D-p-1. The resulting world volume action is an ISO(1,p+N) invariant generalization of the Nambu-Goto action in d=p+1 dimensional space-time. Analogous results are obtained for an AdS p-brane with codimension N embedded in D dimensional AdS space, yielding an SO(2,p+N) invariant version of the Nambu-Goto action in d=p+1 dimensional space-time. Attention is focused on a supersymmetric extension of the D=6 Minkowski space case with an embedded p=3 brane; a particular realization of which is provided by a non-BPS vortex. Here both the Nambu-Goto-Akulov-Volkov action and its dual tensor form are presented.
description: 25 pages, no figures
Design of Photonic Filters based on Integrated Coupled Sagnac Loop Reflectors
Creators: name: Arianfard, Hamed
name: Wu, Jiayang
name: Juodkazis, Saulius
name: Moss, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically investigate integrated photonic resonators formed by two mutually coupled Sagnac loop reflectors (MC-SLRs). Mode interference in the MC-SLR resonators is tailored to achieve versatile filter shapes with high performance, which enable flexible spectral engineering for diverse applications. By adjusting the reflectivity of the Sagnac loop reflectors (SLRs) as well as the coupling strength between different SLRs, we achieve optical analogues of Fano resonance with ultrahigh spectral slope rates, wavelength interleaving / non-blocking switching functions with significantly enhanced filtering flatness, and compact bandpass filters with improved roll-off. In our designs the requirements for practical applications are considered, together with detailed analyses of the impact of structural parameters and fabrication tolerances. These results highlight the strong potential of MC-SLR resonators as advanced multi-functional integrated photonic filters for flexible spectral engineering in optical communications systems.
description: 21 pages, 11 figures, 83 references
Curating Probes (Target 2025 slides and recording link)
Creators: name: Southan, Christopher
Publisher: name: Zenodo
Year: 2021

description: Slide set for an invited presentation for Target 2035 webinar, Dec 2021. A recording of the whole meeting is on https://youtu.be/vCASeF9LAJ8. Yours truly comes in at 1 hour 3 mins but the other presentations are very much worth watching
Ernst-Richard Schwinge, Komplexität und Transparenz. Thukydides: Eine Leseanleitung
Creators: name: Wiemer, Hans-Ulrich
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ernst-Richard Schwinge, Komplexität und Transparenz. Thukydides: Eine Leseanleitung. Bibliothek der klassischen Altertumswissenschaft. N.F., 2. Reihe, Bd. 121. Heidelberg: Universitätsverlag Winter 2008, 182 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Ernst Künzl, Unter den goldenen Adlern. Der Waffenschmuck des römischen Imperiums
Creators: name: Töpfer, Kai M.
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ernst Künzl, Unter den goldenen Adlern. Der Waffenschmuck des römischen Imperiums. Neue populärwissenschaftliche Buchreihe zur Archäologie, Bd. 1. Mainz: Römisch-Germanisches Zentralmuseum 2008, in Kommission bei Schnell und Steiner, Regensburg, 154 S., 160 Farbabb., 31 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Cliticization and the Morphosyntax of Mixtec
Creators: name: Macaulay, Monica
name: Hinton, Leanne
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Class paper for Linguistics 215 (not the number of Field Methods), spring quarter 1985, photocopy of typed original.
Andreas Hauptmann – Volker Pingel, Archäometrie. Methoden und Anwendungsbeispiele / Günther Wagner, Einführung in die Archäometrie
Creators: name: Lang, Matthias
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Andreas Hauptmann – Volker Pingel, Archäometrie. Methoden und Anwendungsbeispiele. Stuttgart: E. Schweizerbart 2008, 264 S., 138 Abb. Rezension zu: Günther Wagner, Einführung in die Archäometrie. Berlin/Heidelberg: Springer 2007, 374 S., 180 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Absence of magnetic evidence for superconductivity in hydrides under high pressure
Creators: name: Hirsch, J. E.
name: Marsiglio, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: It is generally believed that magnetization measurements on sulfur hydride under high pressure performed in 2015 [1] provided "final convincing evidence of superconductivity" [2] in that material, in agreement with theoretical predictions [3,4]. Supported by this precedent, drops in resistance that were later observed in several other hydrides under high pressure [2,5] have been generally accepted as evidence of superconductivity without corroborating evidence from magnetic measurements. In this paper we challenge the original interpretation that the magnetic measurements on sulfur hydride performed in 2015 were evidence of superconductivity. We point out that a large paramagnetic contribution to the magnetic susceptibility was detected below Tc and argue that its temperature dependence rules out the possibility that it would be a background signal; instead the temperature dependence indicates that the paramagnetic behavior originated in the sample. We discuss possible explanations for this remarkable behavior and conclude that standard superconductors would not show such behavior. We also survey all the other published data from magnetic measurements on this class of materials and conclude that they do not provide strong evidence for superconductivity. Consequently, we call into question the generally accepted view that conventional superconductivity in hydrogen-rich materials at high temperature and pressure is a reality, and discuss the implications if it is not.
Additional file 17 of A genome variation map provides insights into the genetics of walnut adaptation and agronomic traits
Creators: name: Ji, Feiyang
name: Ma, Qingguo
name: Zhang, Wenting
name: Liu, Jie
name: Feng, Yu
name: Zhao, Peng
name: Song, Xiaobo
name: Chen, Jiaxin
name: Zhang, Junpei
name: Wei, Xin
name: Zhou, Ye
name: Chang, Yingying
name: Zhang, Pu
name: Huang, Xuehui
name: Qiu, Jie
name: Pei, Dong
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 17: Supplementary Note. Detailed descriptions for the phenotyped walnut traits.
Francesco Chiappinelli, 'Impius Aeneas'
Creators: name: Scafoglio, Giampiero
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Francesco Chiappinelli, 'Impius Aeneas'. Acireale/Roma: Bonanno editore 2007, 95 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Classification of pointed rank one Hopf algebras
Creators: name: Scherotzke, Sarah
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16W30

description: In this paper we classify the finite-dimensional pointed rank one Hopf algebras which are generated as algebras by the first element of the coradical filtration over a field of prime characteristic.
description: 25 pages
A Numerical Model for Flows in Porous and Open Domains Coupled at the Interface by Stress Jump
Creators: name: Yu, Peng
name: Lee, Thong See
name: Zeng, Yan
name: Low, Hong Tong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A numerical model was developed for flows involving an interface between a homogenous fluid and a porous medium. The numerical model is based on the finite volume method with body-fitted and multi-block grids. The Darcy-Forchheimer extended model is used to govern the flow in the porous medium region. At its interface, a shear stress jump was imposed, together with a continuity of normal stress. Furthermore, the effect of the jump condition on the diffusive flux is considered, additional to that on the convective part which has been usually considered. Numerical results of three flow configurations are presented. The modeling is suitable for problems which have complex interface boundary conditions coupling between two flow domains.
description: 31 pages, 9 figures
Niklas Holzberg, Horaz. Dichter und Werk
Creators: name: Weitz, Friedemann
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Niklas Holzberg, Horaz. Dichter und Werk. München: Beck 2009, 240 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Scalar Mesons a0(1450) and sigma(600) from Lattice QCD
Creators: name: Mathur, Nilmani
name: Alexandru, A.
name: Chen, Y.
name: Dong, S. J.
name: Draper, T.
name: Horvath, I.
name: Lee, F. X.
name: Liu, K. F.
name: Tamhankar, S.
name: Zhang, J. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the a0 and sigma mesons with the overlap fermion in the chiral regime with the pion mass as low as 182 MeV in the quenched approximation. After the eta'pi ghost states are separated, we find that the a0 mass with q\bar{q} interpolation field to be almost independent of the quark mass in the region below the strange quark mass. The chirally extrapolated results are consistent with a0(1450) being the u\bar{d} meson and K0*(1430) being the u\bar{s} meson with calculated masses at 1.42+_0.13 GeV and 1.41+_ 0.12 GeV respectively. We also calculate the scalar mesonium with a tetraquark interpolation field. In addition to the two pion scattering states, we find a state at around 550 MeV. Through the study of volume dependence, we confirm that this state is a one-particle state, in contrast to the two-pion scattering states. This suggests that the observed state is a tetraquark mesonium which is quite possibly the sigma(600) meson.
description: 11 pages, 9 figures, accepted for publication in Phys. Rev. D
Enno Burmeister, Antike griechische und römische Theater
Creators: name: Kreeb, Martin
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Enno Burmeister, Antike griechische und römische Theater. Darmstadt: Wissenschaftliche Buchgesellschaft 2006, 168 S., 102 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Condensation of phonons in an ultracold Bose gas
Creators: name: Kagan, Yu.
name: Manakova, L. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the generation of longitudinal phonons in an elongated Bose-condensed gas at zero temperature due to parametric resonance as a result of the modulation of the transverse trap frequency. The nonlinear temporal evolution with account of the phonon-phonon interaction leads self-consistently to the formation of the stationary state with the macroscopic occupation of a single phonon quantum state.
description: 5 pages, 1 figure, submitted to Phys.Rev.Letters
(Non)commutative isotropization in Bianchi I with Barotropic perfect fluid and $Λ$ Cosmological
Creators: name: Ortiz, C.
name: Mena-Barboza, E.
name: Sabido, M.
name: Socorro, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the classical solutions to the Einstein field equations derived using the WKB-like and Hamilton procedures. The investigation is carried out in the commutative and noncommutative scenario for the Bianchi type I cosmological model coupled to barotropic perfect fluid and $λ$ Cosmological for two different gauges. Noncommutativity is achieved by modifying the symplectic structure considering that all minisuperspace variables $\rm q^i$ does not commute and by a deformation between all the minisuperspace variables. In the gauge N=1, it is possible to obtain that the anisotropic parameter $\rm β_{\pm nc}$ tend to a constant curvature for large period of time considering different values in the noncommutative parameters $θ$ and cosmological term. However, this behavior give the idea that is necessary introduce other class of matter in the models, for to have a real isotropization in the model, such as dark energy or dark matter.
description: 15 pages, 1 figure
Expanding plasmas and quasinormal modes of anti-de Sitter black holes
Creators: name: Friess, Joshua J.
name: Gubser, Steven S.
name: Michalogiorgakis, Georgios
name: Pufu, Silviu S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the gravitational quasinormal modes of the global AdS_5-Schwarzschild solution. We show how to use the holographic dual of these modes to describe a thermal plasma of finite extent expanding in a slightly anisotropic fashion. We compare these flows with the behavior of quark-gluon plasmas produced in relativistic heavy ion collisions by estimating the elliptic flow coefficient and the thermalization time.
description: 59 pages, 6 figures. v2: corrected linearized hydro treatment, refs added
Fermi at Trinity
Creators: name: Katz, J. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Enrico Fermi estimated the yield of the Trinity test to be about 10 kilotons by dropping small pieces of paper and observing their motion in the blast wave. This is about 40% of the radiochemically derived value of $25 \pm 2$ kilotons that necessarily includes thermal and nuclear radiation that do not contribute to the blast. Although this story is classic, there appears to be no account of how he related his observation to the yield. This note attempts to reconstruct how he might have done so.
Nicola Hömke – Manuel Baumbach (Hrsg.), Fremde Wirklichkeiten. Literarische Phantastik und antike Literatur
Creators: name: Eickmeyer, Jost
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Nicola Hömke – Manuel Baumbach (Hrsg.), Fremde Wirklichkeiten. Literarische Phantastik und antike Literatur. Kalliope. Studien zur griechischen und lateinischen Poesie, Bd. 6. Heidelberg: Winter Verlag 2006, IX + 437 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Investigation of the chemical vicinity of crystal defects in ion-irradiated Mg and AZ31 with coincident Doppler broadening spectroscopy
Creators: name: Stadlbauer, M.
name: Hugenschmidt, C.
name: Schreckenbach, K.
name: Boeni, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Crystal defects in magnesium and magnesium based alloys like AZ31 are of major importance for the understanding of their macroscopic properties. We have investigated defects and their chemical surrounding in Mg and AZ31 on an atomic scale with Doppler broadening spectroscopy of the positron annihilation radiation. In these Doppler spectra the chemical information and the defect contribution have to be thoroughly separated. For this reason samples of annealed Mg were irradiated with Mg-ions in order to create exclusively defects. In addition Al- and Zn-ion irradiation on Mg-samples was performed in order to create samples with defects and impurity atoms. The ion irradiated area on the samples was investigated with laterally and depth resolved positron Doppler broadening spectroscopy (DBS) and compared with preceding SRIM-simulations of the vacancy distribution, which are in excellent agreement. The investigation of the chemical vicinity of crystal defects in AZ31 was performed with coincident Doppler broadening spectroscopy (CDBS) by comparing Mg-ion irradiated AZ31 with Mg-ion irradiated Mg. No formation of solute-vacancy complexes was found due to the ion irradiation, despite the high defect mobility.
description: Submitted to Physical Review B on March 20 20076. Revised version submitted on September 28 2007. Accepted on October 19 2007
Jörg Rüpke unter Mitarbeit von Anne Glock, Römische Priester in der Antike. Ein biographisches Lexikon
Creators: name: Schneider, Horst
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Jörg Rüpke unter Mitarbeit von Anne Glock, Römische Priester in der Antike. Ein biographisches Lexikon. Stuttgart: Franz Steiner Verlag 2007, 256 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Philip J. Smith, The Archaeology and Epigraphy of Hellenistic and Roman Megaris, Greece
Creators: name: Leitner, Viktoria
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Philip J. Smith, The Archaeology and Epigraphy of Hellenistic and Roman Megaris, Greece. BARIntSer 1762. Oxford: John and Erica Hedges Ltd. 2008, XII + 276 S., 57 s/w Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Giant Inverse Rashba-Edelstein Effect: Application to Monolayer OsBi$_2$
Creators: name: Song, Rui
name: Hao, Ning
name: Zhang, Ping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose that the hybridization between two sets of Rashba bands can lead to an unconventional topology where the two Fermi circles from different bands own in-plane helical spin textures with the same chiralities, and possess group velocities with the same directions. Under the weak spin injection, the two Fermi circles both give the positive contributions to the spin-to-charge conversion and thus induce the giant inverse Rashba-Edelstein Effect with large conversion efficiency, which is very different from the conventional Rashba-Edelstein Effect. More importantly, through the first-principles calculations, we predict that monolayer OsBi2 could be a good candidate to realize the giant inverse Rashba-Edelstein Effect. Our studies not only demonstrate a new mechanism to achieve highly efficient spin-to-charge conversion in spintronics, but also provide a promising material to realize it.
description: 6 pages, 4 figures
Preussische Schlösser und Gärten Berlin-Brandenburg (Hrsg.), unter Mitwirkung von Saskia Hüneke – Astrid Dortert – Sepp-Gustav Gröschel – Wolf-Dieter Heilmeyer – Detlev Kreikenbom – Kathrin Lange – Ulrike Müller- Kaspar, Antiken I. Kurfürstliche und königliche Erwerbungen für die Schlösser und Gärten Brandenburg-Preussens vom 17. bis zum 19. Jahrhundert. Bestandskataloge der Kunstsammlungen, Skulpturen
Creators: name: Fittschen, Klaus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Preussische Schlösser und Gärten Berlin-Brandenburg (Hrsg.), unter Mitwirkung von Saskia Hüneke – Astrid Dortert – Sepp-Gustav Gröschel – Wolf-Dieter Heilmeyer – Detlev Kreikenbom – Kathrin Lange – Ulrike Müller- Kaspar, Antiken I. Kurfürstliche und königliche Erwerbungen für die Schlösser und Gärten Brandenburg-Preussens vom 17. bis zum 19. Jahrhundert. Bestandskataloge der Kunstsammlungen, Skulpturen. Berlin: Akademie Verlag 2009, VIII + 763 S., 622 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Guided Nonlocal Means Estimation of Polarimetric Covariance for Canopy State Classification
Creators: name: Agersborg, Jørgen A.
name: Anfinsen, Stian Normann
name: Jepsen, Jane Uhd
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We have developed a nonlocal algorithm for estimating polarimetric synthetic aperture radar (PolSAR) covariance matrices on single-look complex (SLC) format resolution. The algorithm is inspired by recent work with guided nonlocal means (NLM) speckle filtering, where a co-registered optical image is used to aid the filtering. Based on patch-wise dissimilarities in the SAR and optical domains we set the weights used for the nonlocal average of the outer product of the lexicographic target vectors which form the estimate. By use of this method we show that the estimated covariance matrices preserve the local structure better than previous filtering methods and improve the separation of live from defoliated and dead forest. The detail preserving nature of the algorithm also means that it can be applicable in other settings where preserving the SLC format resolution is necessary.
description: 18 pages, 10 figures
Extensions of Body-part Terms to Locating Expressing in Chalcatongo Mixtec
Creators: name: Brugman, Claudia
name: Hinton, Leanne
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Class paper for Linguistics 299, photocopy of typed original, second draft.
Predictions of Dynamically Emerging Brane Inflation Models
Creators: name: Battefeld, Thorsten
name: Shuhmaher, Natalia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We confront the recent proposal of Emerging Brane Inflation with WMAP3+SDSS, finding a scalar spectral index of $n_s=0.9659^{+0.0049}_{-0.0052}$ in excellent agreement with observations. The proposal incorporates a preceding phase of isotropic, non accelerated expansion in all dimensions, providing suitable initial conditions for inflation. Additional observational constraints on the parameters of the model provide an estimate of the string scale. A graceful exit to inflation and stabilization of extra dimensions is achieved via a string gas. The resulting pre-heating phase shows some novel features due to a redshifting potential, comparable to effects due to the expansion of the universe itself. However, the model at hand suffers from either a potential over-production of relics after inflation or insufficient stabilization at late times.
description: V.2: slightly extended to match version accepted in PRD; 10 pages, 1 figure
An all-digital VLSI minimum shift keying modem
Creators: name: Lee, Kam O.
Publisher: name: University of British Columbia
Year: 2009

description: A general purpose all-digital VLSI minimum shift keying (MSK) modem with novel receiver synchronization capability is designed and implemented. The modulated output is binary and has a centre carrier frequency to bit rate ratio of 5.75. Demodulation is performed semicoherently using a one-bit observation interval. Other on-chip functions include carrier detection, automatic self-test, and internal loopback. Fabricated with 1.2 .tm CMOS standard cell technology, the chip can operate at a maximum clock speed of 50 MHz, rendering 0.19 Mbps binary transmission with the carrier centred at 1.1 MHz. Modulation is provided with a data-controlled square-wave generating digital circuit. No on-chip RAM is needed. This approach also has the advantages of robustness and phase stability. For ease of implementation, demodulation is accomplished with a binary quantized correlation-receiver. The theoretical BER performance of this discrete-time all-digital demodulator in AWGN with perfect synchronization is approximately 2 dB poorer than that of a continuoustime optimal detector. The demodulator’s susceptibility to imperfect carrier and bit synchronization is also formulated. Carrier phase recovery and bit timing extraction are provided by three novel first-order digital phase-locked loops (DPLLs). Owing to the special phase-detection techniques employed in these DPLLs, no front-end filtering structures are required. Markovian analyses of the error characteristics of these DPLLs are presented. A compact almost-all-digital modem unit based on the MSK modem chip is built to facilitate data communications over intrabuilding powerlines at 19.2 kbps using 105.6 kHz and 115.2 kHz carriers. The measured BER performance of this powerline modem in AWGN is approximately 2 dB below theoretical prediction. When used for transmission over actual intrabuilding powerline networks where impulse noises are prevalent, the modem’s performance depends on the powerline phase relationship between the transmit and receive points, powerline load profile, and, to a lesser extent, channel’s physical length. Under normal circumstances with a transmitter output level of 70 dBmV rms, the BER typically ranges from 10⁻² to 10⁻⁵ for cross phase transmission, while a BER of 10⁻⁵ or less may be attained for same-phase transmission.