cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Eddy heat exchange at the boundary under white noise turbulence
Creators: name: Flandoli, Franco
name: Galeati, Lucio
name: Luo, Dejun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove the existence of an eddy heat diffusion coefficient coming from an idealized model of turbulent fluid. A difficulty lies in the presence of a boundary, with also turbulent mixing and the eddy diffusion coefficient going to zero at the boundary. Nevertheless enhanced diffusion takes place.
description: 13 pages
Johannes Christes – Richard Klein – Christoph Lüth (Hrsg.), Handbuch der Erziehung und Bildung in der Antike
Creators: name: Knoch, Stefan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Johannes Christes – Richard Klein – Christoph Lüth (Hrsg.), Handbuch der Erziehung und Bildung in der Antike. Darmstadt: Wissenschaftliche Buchgesellschaft 2006. 336 S., 14 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
A minimum chord stenograph keyboard for blind and sighted users
Creators: name: Hu, Zhongzhi
Publisher: name: University of British Columbia
Year: 2009

description: This thesis deals with the design and testing of an experimental stenograph keyboard for blind and sighted users. The new keyboard, called the Minimum Chord Stenograph (MCS), is presented. It comprises two panels of six keys, one for each hand. Relocation of the fingers above the keys is at a minimum. A coding scheme for MCS was developed to allow ex act phonemic description of the text or speech to be entered by alternate hand typing. Experiments were carried out with the MCS and with the standard Stenograph-Boswell keyboards. The time between successive movements of hands on the keyboards was precisely measured live with a 386 com puter and the statistics have been compiled and analyzed. The results show that the MCS’ performance (WPM) is significantly better than the stan dard stenograph-Boswell; the problem of training time for the stenograph seems to be solved at least at the level of initial competence. Extrapolating from the published results for QWERTY, MCS has much better performance than QWERTY at the initial stage. In conclusion, MCS keyboard may pro vide an efficient alternative to the existing standard stenograph keyboard and to the QWERTY keyboard.
Michael von Albrecht, Vergil. Bucolica – Georgica – Aeneis. Eine Einführung
Creators: name: Polleichtner, Wolfgang
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Michael von Albrecht, Vergil. Bucolica – Georgica – Aeneis. Eine Einführung. Heidelberger Studienhefte zur Altertumswissenschaft. Heidelberg: Universitätsverlag Winter 2. Auflage 2007, VI + 235 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Recent LIGO-Virgo discoveries
Creators: name: Isi, Maximiliano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The LIGO and Virgo gravitational-wave detectors carried out the first half of their third observing run from April through October 2019. During this period, they detected 39 new signals from the coalescence of black holes or neutron stars, more than quadrupling the total number of detected events. These detections included some unprecedented sources, like a pair of black holes with unequal masses (GW190412), a massive pair of neutron stars (GW190425), a black hole potentially in the supernova pair-instability mass gap (GW190521), and either the lightest black hole or the heaviest neutron star known to date (GW190814). Collectively, the full set of signals provided astrophysically valuable information about the distributions of compact objects and their evolution throughout cosmic history. It also enabled more constraining and diverse tests of general relativity, including new probes of the fundamental nature of black holes. This review summarizes the highlights of these results and their implications.
Thomas Ganschow, Krieg in der Antike
Creators: name: Probst, Peter
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Thomas Ganschow, Krieg in der Antike. Darmstadt: Primus Verlag 2007, 159 S., 20 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Additional file 2 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 2: Fig. S1. Circos plot for the genome-wide SNP density. Fig. S2. Population structure of J. sigillata and J. regia accessions. Fig. S3. Clustering of 44 traits for walnut samples investigated in this study. Fig. S4. Comparison of traits related to walnut fruit weight, size and fatty acid content for different populations. Fig. S5. Mutation burden for different walnut subpopulations in the JR3 group. Fig. S6. Genomic signatures for selection of JR1 walnut population. Fig. S7. Phenotypic differences between J. sigillata (JS) and J. regia (JR). Fig. S8. Clustering of 20 environmental values for walnut samples investigated in this study. Fig. S9. Genomic signatures for the Tibetan walnut population. Fig. S10. Genomic loci associated with agronomic traits of walnut identified by GWAS. Fig. S11. Candidate gene associated with nut shell thickness.
ASR Adaptation for E-commerce Chatbots using Cross-Utterance Context and Multi-Task Language Modeling
Creators: name: Shenoy, Ashish
name: Bodapati, Sravan
name: Kirchhoff, Katrin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Automatic Speech Recognition (ASR) robustness toward slot entities are critical in e-commerce voice assistants that involve monetary transactions and purchases. Along with effective domain adaptation, it is intuitive that cross utterance contextual cues play an important role in disambiguating domain specific content words from speech. In this paper, we investigate various techniques to improve contextualization, content word robustness and domain adaptation of a Transformer-XL neural language model (NLM) to rescore ASR N-best hypotheses. To improve contextualization, we utilize turn level dialogue acts along with cross utterance context carry over. Additionally, to adapt our domain-general NLM towards e-commerce on-the-fly, we use embeddings derived from a finetuned masked LM on in-domain data. Finally, to improve robustness towards in-domain content words, we propose a multi-task model that can jointly perform content word detection and language modeling tasks. Compared to a non-contextual LSTM LM baseline, our best performing NLM rescorer results in a content WER reduction of 19.2% on e-commerce audio test set and a slot labeling F1 improvement of 6.4%.
description: Accepted at ACL-IJCNLP 2021 Workshop on e-Commerce and NLP (ECNLP)
The SAURON project -- IX. A kinematic classification for early-type galaxies
Creators: name: Emsellem, Eric
name: Cappellari, Michele
name: Krajnovic, Davor
name: van de Ven, Glenn
name: Bacon, R.
name: Bureau, M.
name: Davies, Roger L.
name: de Zeeuw, P. T.
name: Falcon-Barroso, Jesus
name: Kuntschner, Harald
name: McDermid, Richard
name: Peletier, Reynier F.
name: Sarzi, Marc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: 2D stellar kinematics of 48 representative E and S0 galaxies obtained with the SAURON IFS reveal that early-type galaxies appear in two broad flavours, depending on whether they exhibit clear large-scale rotation or not. We define a new parameter LambdaR which involves luminosity weighted averages over the full 2D kinematic field, as a proxy to quantify the observed projected stellar angular momentum per unit mass. We use it as a basis for a new kinematic classification: early-type galaxies are separated into slow and fast rotators (SRs, FRs), depending on whether they have LambdaR values within their effective radius Re below or above 0.1, respectively. SRs and FRs are shown to be physically distinct classes of galaxies, a result which cannot simply be the consequence of a biased viewing angle. FRs tend to be relatively low luminosity galaxies. SRs tend to be brighter and more massive galaxies, but are still spread over a wide range of absolute magnitude. 3 slow rotators of our sample, among the most massive ones, are consistent with zero rotation. Remarkably, all other SRs contain a large kpc-scale KDC. All FRs show well aligned photometric and kinemetric axes, and small velocity twists, in contrast with most SRs which exhibit significant misalignments and velocity twists. In a companion paper (Paper X), we also show that FRs and SRs are distinct classes in terms of their orbital distribution. We suggest that gas is a key ingredient in the formation and evolution of FRs, and that the slowest rotators are the extreme evolutionary end point reached deep in gravitational potential wells where dissipationless mergers had a major role in the evolution, and for which most of the baryonic angular momentum was expelled outwards. (abridged)
description: Accepted for publication in MNRAS, 18 pages, 13 figures. Paper with Figure 1 at full resolution available at http://cral.univ-lyon1.fr/eric.emsellem/labo/perso/Preprints.html. (3 numbers and one corrected figure in new version, consistent with the published one)
'Verecundia' in 'Institutio oratoria' 12,5,1-4: Wie Quintilian Cicero, 'De oratore' 1,119-122 und Seneca, 'Epistulae morales' 11 rezipiert
Creators: name: Döpp, Siegmar
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Roma in età adrianea: l’immagine dell’ideologia politica nella ricostruzione architettonica
Creators: name: Giudice, Alberto
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Local defect in a magnet with long-range interactions
Creators: name: Hoyos, J. A.
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate a single defect coupling to the square of the order parameter in a nearly critical magnet with long-range spatial interactions of the form $r^{-(d+σ)}$, focusing on magnetic droplets nucleated at the defect while the bulk system is in the paramagnetic phase. Because of the long-range interaction, the droplet develops a power-law tail which is energetically unfavorable. However, as long as $σ>0$, the tail contribution to the droplet free energy is subleading in the limit of large droplets; and the free energy becomes identical to the case of short-range interactions. We also study the droplet quantum dynamics with and without dissipation; and we discuss the consequences of our results for defects in itinerant quantum ferromagnets.
description: 8 pages, 5 eps figures, final version, as published
Characterization of stilbene-d12 for neutron spectroscopy without time of flight
Creators: name: Gaughan, N.
name: Zhou, J.
name: Becchetti, F. D.
name: Torres-Isea, R. O.
name: Febbraro, M.
name: Zaitseva, N.
name: Di Fulvio, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have experimentally characterized the light-output response of a deuterated trans-stilbene (stilbene-d12) crystal to quasi-monoenergetic neutrons in the 0.8 to 4.4 MeV energy range. These data allowed us to perform neutron spectroscopy measurements of a DT 14.1 MeV source and a PuBe-239 source by unfolding the impinging neutron spectrum from the measured light-output response. The stilbene-d12 outperforms a H1-stilbene of similar size when comparing the shape of the unfolded spectra and the reference ones. These results confirm the viability of non-hygroscopic stilbene-d12 crystal for direct neutron spectroscopy without need for time-of-flight measurements. This capability makes stilbene-d12 a well suited detector for fast-neutron spectroscopy in many applications including nuclear reaction studies, radiation protection, nuclear non-proliferation, and space travel.
„Keine Gesellschaft der Gegenwart wird freiwillig auf sie verzichten wollen.”
Creators: name: Thomaschke, Dirk
name: Kesselhut, Simon
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Raum und Zeit in Kallimachos’ Hymnos 'Auf das Bad der Pallas'.
Creators: name: Wulfram, Hartmut
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
21 Briefe (1883-1902) Theodor Mommsens an seine Enkelin Dorothea von Wilamowitz-Moellendorff (*1879) nebst zwei Briefen (1896) von ihr an ihn
Creators: name: Dräger, Paul
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Organologische Argumentation in Jacob Burckhardts ‚Griechische Kulturgeschichte‘
Creators: name: Schmidt, Malte
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Infrared study of valence transition compound YbInCu4 using cleaved surfaces
Creators: name: Okamura, H.
name: Michizawa, T.
name: Nanba, T.
name: Ebihara, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Optical reflectivity R(w) of YbInCu4 single crystals has been measured across its first-order valence transition at T_v ~ 42 K, using both polished and cleaved surfaces. R(w) measured on cleaved surfaces Rc(w) was found much lower than that on polished surface Rp(w) over the entire infrared region. Upon cooling through T_v, Rc(w) showed a rapid change over a temperature range of less than 2 K, and showed only minor changes with further cooling. In contrast, Rp(w) showed much more gradual and continuous changes across T_v, similarly to previously reported data on polished surfaces. The present result on cleaved surfaces demonstrates that the microscopic electronic structures of YbInCu4 observed with infrared spectroscopy indeed undergo a sudden change upon the valence transition. The gradual temperature-evolution of Rp(w) is most likely due to the compositional and/or Yb-In site disorders caused by polishing.
description: 4 pages, 4 figures, Fig.1(a) corrected
Correlations Estimates in the Lattice Anderson Model
Creators: name: Bellissard, Jean V.
name: Hislop, Peter D.
name: Stolz, Günter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B44; 81Q19

description: We give a new proof of correlation estimates for arbitrary moments of the resolvent of random Schrödinger operators on the lattice that generalizes and extends the correlation estimate of Minami for the second moment. We apply this moment bound to obtain a new $n$-level Wegner-type estimate that measures eigenvalue correlations through an upper bound on the probability that a local Hamiltonian has at least $n$ eigenvalues in a given energy interval. Another consequence of the correlation estimates is that the results on the Poisson statistics of energy level spacing and the simplicity of the eigenvalues in the strong localization regime hold for a wide class of translation-invariant, selfadjoint, lattice operators with decaying off-diagonal terms and random potentials.
description: 16 pages
Electromagnetic response of broken-symmetry nano-scale clusters
Creators: name: Grigorenko, Ilya
name: Haas, Stephan
name: Levi, A. F. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A microscopic, non-local response theory is developed to model the interaction of electromagnetic radiation with inhomogeneous nano-scale clusters. The breakdown of classical continuum-field Mie theory is demonstrated at a critical coarse-graining threshold, below which macroscopic plasmon resonances are replaced by molecular excitations with suppressed spectral intensity.
Quantum metrology and coherence
Creators: name: Ares, Laura
name: Luis, Alfredo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the relation between quantum metrological resolution and coherence. We examine this dependence in two manners: we develop a quantum Wiener-Kintchine theorem for a suitable model of quantum ruler, and we compute the Fisher information. The two methods have the virtue of including both the contributions of probe and measurement on an equal footing. We illustrate this approach with several examples of linear and nonlinear metrology. Finally, we optimize resolution regarding coherence as a finite resource.
description: 9 pages
Models of inflation with primordial non-Gaussianities
Creators: name: Bernardeau, Francis
name: Brunier, Tristan
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a class of models in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gaussianity is first generated by a light scalar field and then transferred into curvature fluctuations during or at the end of inflation. For this class of models we present generic results for the probability distribution functions of the metric perturbation at the end of inflation. It is stressed that finite volume effects can induce non trivial effects that we sketch.
description: 8 pages with 3 eps figures. To appear in Proceedings of the Albert Einstein Century International Conference, UNESCO, Paris, France, 18-22 July 2005
Altri codici con 'excerpta' delle 'Vite' di Diogene Laerzio
Creators: name: Dorandi, Tiziano
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 11 (2008): Göttinger Forum für Altertumswissenschaft
Optical data implies a null simultaneity test theory parameter in rotating frames
Creators: name: Kipreos, Edward T.
name: Balachandran, Riju S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The simultaneity framework describes the relativistic interaction of time with space. The two major proposed simultaneity frameworks are differential simultaneity, in which time is offset with distance in "moving" or rotating frames for each "stationary" observer, and absolute simultaneity, in which time is not offset with distance. We use the Mansouri and Sexl test theory to analyze the simultaneity framework in rotating frames in the absence of spacetime curvature. The Mansouri and Sexl test theory has four parameters. Three parameters describe relativistic effects. The fourth parameter, $ε(v)$, was described as a convention on clock synchronization. We show that $ε(v)$ is not a convention, but is instead a descriptor of the simultaneity framework whose value can be determined from the extent of anisotropy in the unidirectional one-way speed of light. In rotating frames, one-way light speed anisotropy is described by the Sagnac effect equation. We show that four published Sagnac equations form a relativistic series based on relativistic kinematics and simultaneity framework. Only the conventional Sagnac effect equation, and its associated isotropic two-way speed of light, is found to match high-resolution optical data. Using the conventional Sagnac effect equation, we show that $ε(v)$ has a null value in rotating frames, which implies absolute simultaneity. Introducing the empirical Mansouri and Sexl parameter values into the test theory equations generates the rotational form of the absolute Lorentz transformation, implying that this transformation accurately describes rotational relativistic effects.
description: 33 pages, 4 figures; published in Mod. Phys. Lett. A
Modified Kolmogorov Wave Turbulence in QCD matched onto "Bottom-up" Thermalization
Creators: name: Khachatryan, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate modification of Kolmogorov wave turbulence in QCD calculating gluon spectra as functions of time in the presence of a low energy source which feeds in energy density in the infrared region at a time-dependent rate. Then considering the picture of saturation constraints as has been constructed in the "bottom-up" thermalization approach we revisit that picture for RHIC center-mass energy, $W = 130 {GeV}$, and also extend it to LHC center-mass energy, $W = 5500 {GeV}$, thus for two cases having an opportunity to calculate the equilibration time, $tau_{eq|therm}$, of the gluon system produced in a central heavy ion collision at mid-rapidity region. Thereby, at RHIC and LHC energies we can match the equilibration time, obtained from the late stage gluon spectrum of the modified Kolmogorov wave turbulence, onto that of the "bottom-up" thermalization and other evolutional approaches as well. In addition, from the revised "bottom-up" approach we find the gluon liberation coefficient to be on the average, $c = 0.81 - 1.06$ at RHIC and $c = 0.50 - 0.56$ at LHC. We also present other phenomenological estimates of $tau_{therm}$ which, at QCD realistic couplings, yield $0.45fm - 0.65fm < tau_{therm} < 0.97fm - 2.72fm$ at RHIC and $0.31fm - 0.40fm < tau_{therm} < 0.86fm - 2.04fm$ at LHC, both reflecting the original and modified Kolmogorov wave turbulent scenarios. In the latter case, at certain conditions, taking also into account both very small and realistic couplings we give estimates - $0.65fm < tau_{therm} < 1.29fm$ at RHIC and $0.52fm < tau_{therm} < 1.16fm$ at LHC, as well as at realistic couplings we find $0.53 < tau_{therm} < 0.7fm$ at RHIC and $0.41 < tau_{therm} < 0.65fm$ at LHC.
description: 37 pages, 8 figures and 5 tables: typos were corrected, content changed in Abstract and Conclusions, 2 tables were added in Conclusions
The Autonomous Siemens Tram
Creators: name: Palmer, Andrew W.
name: Sema, Albi
name: Martens, Wolfram
name: Rudolph, Peter
name: Waizenegger, Wolfgang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper presents the Autonomous Siemens Tram that was publicly demonstrated in Potsdam, Germany during the InnoTrans 2018 exhibition. The system was built on a Siemens Combino tram and used a multi-modal sensor suite to localize the vehicle, and to detect and respond to traffic signals and obstacles. An overview of the hardware and the developed localization, signal handling, and obstacle handling components is presented, along with a summary of their performance.
description: 6 pages, presented at the 2020 International Conference on Intelligent Transportation Systems (ITSC)
Dirk Uwe Hansen, Theognis, Mimnermos, Phokylides: Frühe griechische Elegien. Eingeleitet, übersetzt und kommentiert
Creators: name: Nesselrath, Heinz-Günther
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Dirk Uwe Hansen, Theognis, Mimnermos, Phokylides: Frühe griechische Elegien. Eingeleitet, übersetzt und kommentiert. Darmstadt: Wissenschaftliche Buchgesellschaft 2005, XVIII + 180 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Exploring deterministic frequency deviations with explainable AI
Creators: name: Kruse, Johannes
name: Schäfer, Benjamin
name: Witthaut, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Systems and Control (eess.SY)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Deterministic frequency deviations (DFDs) critically affect power grid frequency quality and power system stability. A better understanding of these events is urgently needed as frequency deviations have been growing in the European grid in recent years. DFDs are partially explained by the rapid adjustment of power generation following the intervals of electricity trading, but this intuitive picture fails especially before and around noonday. In this article, we provide a detailed analysis of DFDs and their relation to external features using methods from explainable Artificial Intelligence. We establish a machine learning model that well describes the daily cycle of DFDs and elucidate key interdependencies using SHapley Additive exPlanations (SHAP). Thereby, we identify solar ramps as critical to explain patterns in the Rate of Change of Frequency (RoCoF).
description: 7 pages, 4 figures
The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
Creators: name: Cappellari, M.
name: Emsellem, E.
name: Bacon, R.
name: Bureau, M.
name: Davies, R. L.
name: de Zeeuw, P. T.
name: Falcon-Barroso, J.
name: Krajnovic, D.
name: Kuntschner, H.
name: McDermid, R. M.
name: Peletier, R. F.
name: Sarzi, M.
name: Bosch, R. C. E. van den
name: van de Ven, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the orbital distribution of E and S0 galaxies using SAURON integral-field stellar kinematics. We construct the anisotropy (V/sigma,epsilon) diagram, for the 48 E/S0 galaxies from the SAURON survey. For a subsample of 24 galaxies consistent with axisymmetry, we use three-integral axisymmetric Schwarzschild dynamical models to recover the detailed orbital distribution and we find good agreement with the anisotropy derived from the (V/sigma,epsilon) diagram. In the companion Paper IX we show that the early-type galaxies can be subdivided into two classes of systems with or without a significant amount of specific stellar angular momentum. Here we show that the two classes have different distributions on the (V/sigma,epsilon) diagram. The slow rotators are more common among the most massive systems and are generally classified as E from photometry alone. Those in our sample tend to be fairly round (epsilon<0.3), but can have significant kinematical misalignments, indicating that as a class they are moderately triaxial, and span a range of anisotropies (delta<0.3). The fast rotators are generally fainter and are classified either E or S0. They can appear quite flattened (epsilon<0.7), do not show significant kinematical misalignments (unless barred or interacting), indicating they are nearly axisymmetric, and span an even larger range of anisotropies (delta<0.5). These results are confirmed when we extend our analysis to 18 additional E/S0 galaxies observed with SAURON. All these results support the idea that fast rotators are nearly oblate and contain disk-like components. The role of gas must have been important for their formation. The slow rotators are weakly triaxial. Current collisionless merger models seem unable to explain their detailed observed properties. (Abridged)
description: 27 pages, 22 figures, LaTeX. Accepted for publication in MNRAS
Quasiparticle self-consistent $GW$ method; a basis for the independent-particle approximation
Creators: name: Kotani, Takao
name: van Schilfgaarde, Mark
name: Faleev, Sergey V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have developed a new type of self-consistent scheme within the $GW$ approximation, which we call quasiparticle self-consistent $GW$ (QS$GW$). We have shown that QS$GW$ rather well describes energy bands for a wide-range of materials, including many where the local-density approximation fails. QS$GW$ contains physical effects found in other theories such as LDA$+U$, SIC and $GW$ in a satisfactory manner without many of their drawbacks (partitioning of itinerant and localized electrons, adjustable parameters, ambiguities in double-counting, etc.). We present some theoretical discussion concerning the formulation of QS$GW$, including a prescriptino for calculating the total energy. We also address several key methodological points needed for implementation. We then show convergence checks and some representative results in a variety of materials.
description: v2:the same as previous version --but better tex file; v3:add appendix and modify introduction,mainly; v4 mainly, theoretical section (IB IC) are renewed
Evolution in the Halo Masses of Isolated Galaxies between z~1 and z~0: From DEEP2 to SDSS
Creators: name: Conroy, Charlie
name: Prada, Francisco
name: Newman, Jeffrey A.
name: Croton, Darren
name: Coil, Alison L.
name: Conselice, Christopher J.
name: Cooper, Michael C.
name: Davis, Marc
name: Faber, S. M.
name: Gerke, Brian F.
name: Guhathakurta, Puragra
name: Klypin, Anatoly
name: Koo, David C.
name: Yan, Renbin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We measure the evolution in the virial mass-to-light ratio (M_{200}/L_B) and virial-to-stellar mass ratio (M_{200}/M_\ast) for isolated ~ L* galaxies between z~1 and z~0 by combining data from the DEEP2 Galaxy Redshift Survey and the Sloan Digital Sky Survey. Utilizing the motions of satellite galaxies around isolated galaxies, we measure line-of-sight velocity dispersions and derive dark matter halo virial masses for these host galaxies. At both epochs the velocity dispersion of satellites correlates with host galaxy stellar mass, σ\propto M_\ast^{0.4+/-0.1}, while the relation between satellite velocity dispersion and host galaxy B-band luminosity may grow somewhat shallower from σ\propto L_B^{0.6+/-0.1} at z~1 to σ\propto L_B^{0.4+/-0.1} at z~0. The evolution in M_200/M_\ast from z~1 to z~0 displays a bimodality insofar as host galaxies with stellar mass below M_\ast ~10^{11} M_Sun/h maintain a constant ratio (the intrinsic increase is constrained to a factor of 1.1+/-0.7) while host galaxies above M_\ast ~10^{11} M_Sun/h experience a factor of 4+/-3 increase in their virial-to-stellar mass ratio. This result can be easily understood if galaxies below this stellar mass scale continue to form stars while star formation in galaxies above this scale is quenched and the dark matter halos of galaxies both above and below this scale grow in accordance with LCDM cosmological simulations. Host galaxies that are red in U-B color have larger satellite dispersions and hence reside on average in more massive halos than blue galaxies at both z~1 and z~0. The redshift and host galaxy stellar mass dependence of M_200/M_\ast agrees qualitatively with the Millennium Run semi-analytic model of galaxy formation. (ABRIDGED)
description: 20 pages, 8 figures, submitted to ApJ
Ulrich Fellmeth, Pecunia non olet. Die Wirtschaft der antiken Welt
Creators: name: Knoch, Stefan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ulrich Fellmeth, Pecunia non olet. Die Wirtschaft der antiken Welt. Darmstadt: Wissenschaftliche Buchgesellschaft 2008. 192 S., 13 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Electroweak Phase Transition in an Inert Complex Triplet Model
Creators: name: Kazemi, Mohammad Javad
name: AbdusSalam, Shehu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics of electroweak phase transition in a simple extension of the Standard Model where the Higgs sector is extended by adding an $SU(2)_L$-triplet with hypercharge Y=2. By making random scans over the parameters of the model, we show that there are regions consistent with constraints from collider experiments and the requirement for a strong first-order electroweak phase transition which is needed for electroweak baryogenesis. Further, we also study the power spectrum of the gravitational waves which can be generated due to the first-order phase transitions. Moreover, the detectability of these gravitational waves, via future space-based detectors, is discussed.
description: Accepted by Physical Review D. New references are added
Combined Reduced-Rank Transform
Creators: name: Torokhti, Anatoli
name: Howlett, Phil
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: Classical Analysis and ODEs (math.CA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We propose and justify a new approach to constructing optimal nonlinear transforms of random vectors. We show that the proposed transform improves such characteristics of rank-reduced transforms as compression ratio, accuracy of decompression and reduces required computational work. The proposed transform ${\mathcal T}_p$ is presented in the form of a sum with $p$ terms where each term is interpreted as a particular rank-reduced transform. Moreover, terms in ${\mathcal T}_p$ are represented as a combination of three operations ${\mathcal F}_k$, ${\mathcal Q}_k$ and ${\boldsymbolϕ}_k$ with $k=1,...,p$. The prime idea is to determine ${\mathcal F}_k$ separately, for each $k=1,...,p$, from an associated rank-constrained minimization problem similar to that used in the Karhunen--Loève transform. The operations ${\mathcal Q}_k$ and ${\boldsymbolϕ}_k$ are auxiliary for finding ${\mathcal F}_k$. The contribution of each term in ${\mathcal T}_p$ improves the entire transform performance. A corresponding unconstrained nonlinear optimal transform is also considered. Such a transform is important in its own right because it is treated as an optimal filter without signal compression. A rigorous analysis of errors associated with the proposed transforms is given.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Initial conditions for disc galaxies
Creators: name: McMillan, Paul J.
name: Dehnen, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a general recipe for constructing N-body realizations of galaxies comprised of near-spherical and disc components. First, an exact spherical distribution function for the spheroids (halo & bulge) is determined, such that it is in equilibrium with the gravitational monopole of the disc components. Second, an N-body realisation of this model is adapted to the full disc potential by growing the latter adiabatically from its monopole. Finally, the disc is sampled with particles drawn from an appropriate distribution function, avoiding local-Maxwellian approximations. We performed test simulations and find that the halo and bulge radial density profile very closely match their target model, while they become slightly oblate due to the added disc gravity. Our findings suggest that vertical thickening of the initially thin disc is caused predominantly by spiral and bar instabilities, which also result in a radial re-distribution of matter, rather than scattering off interloping massive halo particles.
description: 10 pages, 13 figures, MNRAS accepted; typo in email address fixed
Cosmological constant, information and gedanken experiments with black hole horizons
Creators: name: Gurzadyan, V. G.
name: Stepanian, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The cosmological constant if considered as a fundamental constant, provides an information treatment for gravitation problems, both cosmological and of black holes. The efficiency of that approach is shown via gedanken experiments for the information behavior of the horizons for Schwarzschild-de Sitter and Kerr-de Sitter metrics. A notion of entropy regarding any observer and in all possible non-extreme black hole solutions is suggested, linked also to Bekenstein bound. The suggested information approach forbids the existence of naked singularities.
description: 7 pages; Eur Phys J Plus (in press); the published version
Using Probes as Functional Genomics Tools: Identifying, Comparing Sources and Determining Availability (BioIT 2021 recording)
Creators: name: Southan, Christopher
Publisher: name: Zenodo
Year: 2021

description: There has been a confusing proliferation of probe sources. Probes are increasingly important functional genomics tools but have associated pitfalls. Specific and potent small-molecule chemical probes generate biological insights for understudied proteins and can validate new drug targets. Since the NLP/NIH probes developed between 2005 to 2014 many sources have surfaced new probe structures. However, it has become difficult to know exactly what is available.
Clemens Koehn, Krieg – Diplomatie – Ideologie. Zur Außenpolitik hellenistischer Mittelstaaten
Creators: name: Wiemer, Hans-Ulrich
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Clemens Koehn, Krieg – Diplomatie – Ideologie. Zur Außenpolitik hellenistischer Mittelstaaten. Historia – Einzelschriften 195. Stuttgart: Franz Steiner Verlag 2007, 248 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Michael Schmauder, Die Hunnen. Ein Reitervolk in Europa
Creators: name: Stickler, Timo
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Michael Schmauder, Die Hunnen. Ein Reitervolk in Europa, Darmstadt: Primus Verlag 2009, 168 S., 120 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Resonant electron heating and molecular phonon cooling in single C$_{60}$ junctions
Creators: name: Schulze, G.
name: Franke, K. J.
name: Gagliardi, A.
name: Romano, G.
name: Lin, C. S.
name: Da Rosa, A.
name: Niehaus, T. A.
name: Frauenheim, Th.
name: Di Carlo, A.
name: Pecchia, A.
name: Pascual, J. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study heating and heat dissipation of a single \c60 molecule in the junction of a scanning tunneling microscope (STM) by measuring the electron current required to thermally decompose the fullerene cage. The power for decomposition varies with electron energy and reflects the molecular resonance structure. When the STM tip contacts the fullerene the molecule can sustain much larger currents. Transport simulations explain these effects by molecular heating due to resonant electron-phonon coupling and molecular cooling by vibrational decay into the tip upon contact formation.
description: Accepted in Phys. Rev. Lett
Joachim Dingel, Senecas Epigramme und andere Gedichte aus der Anthologia Latina. Ausgabe mit Übersetzung und Kommentar
Creators: name: Degl’Innocenti Pierini, Rita
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Joachim Dingel, Senecas Epigramme und andere Gedichte aus der Anthologia Latina. Ausgabe mit Übersetzung und Kommentar. Wissenschaftliche Kommentare zu griechischen und lateinischen Schriftstellern. Heidelberg: Universitätsverlag Winter Heidelberg 2007, 336 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Evolution of Retweet Rates in Twitter User Careers: Analysis and Model
Creators: name: Garimella, Kiran
name: West, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: We study the evolution of the number of retweets received by Twitter users over the course of their "careers" on the platform. We find that on average the number of retweets received by users tends to increase over time. This is partly expected because users tend to gradually accumulate followers. Normalizing by the number of followers, however, reveals that the relative, per-follower retweet rate tends to be non-monotonic, maximized at a "peak age" after which it does not increase, or even decreases. We develop a simple mathematical model of the process behind this phenomenon, which assumes a constantly growing number of followers, each of whom loses interest over time. We show that this model is sufficient to explain the non-monotonic nature of per-follower retweet rates, without any assumptions about the quality of content posted at different times.
The Secular Evolution and Dynamical Architecture of the Neptunian Triplet Planetary System HD 69830
Creators: name: Jianghui, Ji
name: Kinoshita, H.
name: Lin, Liu
name: Guangyu, Li
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We perform numerical simulations to study the secular orbital evolution and dynamical structure in the HD 69830 system with the best-fit orbital solutions by Lovis and coworkers (2006). In the simulations, we show that the triplet Neptunian system can be stable at least for 2 Gyr and the stability would not be greatly influenced even if we vary the planetary masses. In addition, we employ the Laplace-Lagrange secular theory to investigate the long-term behaviors of the system, and the outcomes demonstrate that this theory can well describe the secular orbital evolution for all planets, where the secular periods and amplitudes in the eccentricities well agrees with those of the direct numerical integrations. We first reveal that the secular periods of the eccentricity $e_{1}$ and $e_{2}$ are identical about 8,300 yr. Moreover, we explore the planetary configuration of three Neptune-mass companions with one massive terrestrial planet in 0.07 AU $\leq a \leq 1.20$ AU, to examine the asteroid structure in this system. We underline that there are stable zones at least $10^{5}$ yr for low-mass terrestrial planets locating between 0.3 and 0.5 AU, and 0.8 and 1.2 AU with final low eccentricities. Still, we also find that the secular resonance $ν_{1}$ and $ν_{2}$ of two inner planets can excite the eccentricities of the terrestrial bodies, and the accumulation or depletion of the asteroid belt are also shaped by orbital resonances of the outer planets, i.e., 5:2 and 1:2 MMRs with Planet D... (abridged)
description: 19 Pages, 3 figures, accepted for publication in ApJ
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 Version 2.0 now available.
Dust absorption along the line of sight for high-redshift objects
Creators: name: Trenti, M.
name: Stiavelli, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We estimate the optical depth distribution of dust present in absorption systems along the line of sight of high redshift galaxies and the resulting reddening. We characterize the probability distribution of the transmission to a given redshift and the shape of the effective mean extinction law by means of analytical estimates and Monte Carlo simulations. We present our results in a format useful for applications to present samples of high redshift galaxies and discuss the implications for observations with the James Webb Space Telescope. Our most realistic model takes into account the metallicity evolution of Damped Lyman Alpha absorbers and predicts that the effects of dust absorption are modest: at redshift z \gtrsim 5 the transmission is above 0.8 at an emitted wavelength λ_e = 0.14 μm with probability 90%. Therefore dust obscuration along the line of sight will affect only marginally observations at very high redshift.
description: 27 pages, 9 figures, ApJ accepted
Renate Schlesier – Agnes Schwarzmaier (Hrsgg.), Dionysos. Verwandlung und Ekstase
Creators: name: Dietrich, Nikolaus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Renate Schlesier – Agnes Schwarzmaier (Hrsgg.), Dionysos. Verwandlung und Ekstase. Ausstellungskatalog Staatliche Museen Berlin. Regensburg: Schnell und Steiner Verlag 2008, 224 S., 137 Ill., 24 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 12 (2009): Göttinger Forum für Altertumswissenschaft
Vortex mass in a superfluid at low frequencies
Creators: name: Thouless, D. J.
name: Anglin, J. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: An inertial mass of a vortex can be calculated by driving it round in a circle with a steadily revolving pinning potential. We show that in the low frequency limit this gives precisely the same formula that was used by Baym and Chandler, but find that the result is not unique and depends on the force field used to cause the acceleration. We apply this method to the Gross-Pitaevskii model, and derive a simple formula for the vortex mass. We study both the long range and short range properties of the solution. We agree with earlier results that the non-zero compressibility leads to a divergent mass. From the short-range behavior of the solution we find that the mass is sensitive to the form of the pinning potential, and diverges logarithmically when the radius of this potential tends to zero.
description: 4 pages
Chemical Probes as Functional Genomics Tools: Sources, Content and Availability (BioIT 2021 slides)
Creators: name: Southan, Christopher
Publisher: name: Zenodo
Year: 2021

description: There has been a confusing proliferation of probe sources. Probes are increasingly important functional genomics tools but have associated pitfalls. Specific and potent small-molecule chemical probes generate biological insights for understudied proteins and can validate new drug targets. Since the NLP/NIH probes developed between 2005 to 2014 many sources have surfaced new probe structures. However, it has become difficult to know exactly what is available.