cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
(de)Tails of Toda CFT
Creators: name: Drukker, Nadav
name: Passerini, Filippo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The relation between the partition function of N=2 gauge theories in 4d and conformal Toda field theory in 2d is explained for the case where the 4d theory is a linear quiver with "quiver tails". That is when the 4d theory has gauge groups of different rank. We propose an identification of a subset of the states of Toda CFT which represent the Coulomb-branch parameters of the different rank gauge multiplets and study their three-point functions and descendants.
description: 28 pages, 4 figures; v2: Added analysis of the Seiberg-Witten curve and some minor changes
Associations of production characteristics with the on-farm presence of Fasciola hepatica in dairy cows vary across production levels and indicate differences between breeds
Creators: name: Oehm, Andreas W.
name: Zablotski, Yury
name: Hoedemaker, Martina
name: Campe, Amely
name: Strube, Christina
name: Jordan, Daniela
name: Springer, Andrea
name: Klawitter, Markus
name: Knubben-Schweizer, Gabriela
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Milk
subject: Fasciola hepatica
subject: Fats
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Fasciola hepatica is one of the economically most important endoparasites in cattle production. The aim of the present work was to evaluate the relevance of production level on the associations of on-farm presence of F. hepatica with farm-level milk yield, milk fat, and milk protein in Holstein cows, a specialised dairy breed, and in Simmental cows, a dual purpose breed. Furthermore, we investigated whether differential associations were present depending on breed. Data from 560 dairy farms across Germany housing 93,672 cows were analysed. The presence of F. hepatica antibodies was determined via ELISA on bulk tank milk samples. Quantile regression was applied to model the median difference in milk yield, milk fat, and milk protein depending on the interaction of breed and fluke occurrence. Whereas a reduction in milk yield (-1,206 kg, p < 0.001), milk fat (-22.9 kg, p = 0.001), and milk protein (-41.6 kg, p <0.001) was evident on F. hepatica positive German Holstein farms, only milk fat (-33.8 kg, p = 0.01) and milk protein (-22.6 kg, p = 0.03) were affected on F. hepatica positive German Simmental farms. Subsequently, production traits were modelled within each of the two breeds for low, medium, and high producing farms in the presence of F. hepatica antibodies and of confounders. On Holstein farms, the presence of F. hepatica seropositivity was associated with lower production, while on German Simmental farms such an association was less evident. This work demonstrates that production level is relevant when assessing the associations between the exposure to F. hepatica with production characteristics. Moreover, both models indicate a breed dependence. This could point towards a differential F. hepatica resilience of specialised dairy breeds in comparison with dual purpose breeds.
The Trigonometric Parallax of Cygnus X-1
Creators: name: Reid, Mark J.
name: McClintock, Jeffrey E.
name: Narayan, Ramesh
name: Gou, Lijun
name: Remillard, Ronald A.
name: Orosz, Jerome A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report a direct and accurate measurement of the distance to the X-ray binary Cygnus X-1, which contains the first black hole to be discovered. The distance of 1.86 (-0.11,+0.12) kpc was obtained from a trigonometric parallax measurement using the Very Long Baseline Array. The position measurements are also sensitive to the 5.6 d binary orbit and we determine the orbit to be clockwise on the sky. We also measured the proper motion of Cygnus X-1 which, when coupled to the distance and Doppler shift, gives the three-dimensional space motion of the system. When corrected for differential Galactic rotation, the non-circular (peculiar) motion of the binary is only about 21 km/s, indicating that the binary did not experience a large "kick" at formation.
description: Paper I of three papers on Cygnus X-1; 13 pages including 3 figures and 2 tables, ApJ in press
title: Einfluss der planmäßigen Goodwill-Abschreibungen auf die Erfolgsgrößen von Unternehmen der DACH-Regionen
Creators: name: Schneider, Leonie
Publisher: name: FH Vorarlberg (Fachhochschule Vorarlberg)
Year: 2021
Subjects: subject: 650 Management

description: Die Bedeutung des Goodwills in den Bilanzen der kapitalmarktorientierten Unternehmen hat in den letzten Jahren aufgrund der überteuerten Unternehmensübernahmen deutlich zugenommen. Aufgrund der zahlreichen Ermessenspielräume und den vergleichsweise geringen Abschreibungen wird der Impairment Only Approach häufig kritisiert. Das IASB hat eine Rückkehr zur planmäßigen Abschreibung offen zur Diskussion gestellt. Aus diesem Grund ist es notwendig zu verstehen, welche Auswirkungen die Wiedereinführung der planmäßigen Abschreibung auf die Unternehmen hat. Das Ziel der vorliegenden Arbeit ist die Beantwortung folgender Forschungsfrage: Welchen Einfluss hat die mögliche Wiedereinführung einer planmäßigen Goodwill-Abschreibung auf die Erfolgsgrößen von Unternehmen der DACH-Regionen? Um die Forschungsfrage zu beantworten, wurde eine empirisch-theoretische Analyse durchgeführt. Hierzu wurde zunächst die Goodwill-Bilanzierungspraxis von 48 im DAX, ATX und SMI gelisteten Unternehmen im Zeitraum von 2015 bis 2019 analysiert und anschließend eine lineare Goodwill-Abschreibung für diesen Untersuchungszeitraum simuliert. Die Ergebnisse der Studie zeigen, dass vor allem die im DAX gelisteten Unternehmen vom Impairment Only Approach profitiert haben. Die Wiedereinführung der planmäßigen Goodwill-Abschreibung würde die Vermögens- und Ertragslage der untersuchten Unternehmen deutlich verschlechtern. Insbesondere für ertragsschwache Unternehmen kann die Abkehr des Impairment Only Approachs kritische Folgen für die wirtschaftliche Lage haben. Zum Abschluss werden alternative Abschreibungsmethoden und Ansätze diskutiert sowie Implikationen für die Diskussion des IASB abgeleitet.
Extrasolar Planets in the Classroom
Creators: name: George, Samuel J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The field of extrasolar planets is still, in comparison with other astrophysical topics, in its infancy. There have been about 300 or so extrasolar planets detected and their detection has been accomplished by various different techniques. Here we present a simple laboratory experiment to show how planets are detected using the transit technique. Following the simple analysis procedure describe we are able to determine the planetary radius to be 1.27 +/- 0.20 R_{J} which, within errors agrees with the establish value of 1.32 +/- 0.25 R_{J}.
description: 7 pages, 2 figures, published in Physics Education
A search for dormant binaries with degenerate components in omega Centauri and NGC 6397
Creators: name: Rozyczka, M.
name: Kaluzny, J.
name: Pietrukowicz, P.
name: Pych, W.
name: Catelan, M.
name: Contreras, C.
name: Thompson, I. B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the first spectroscopic search for quiescent degenerate binaries in globular clusters. Our survey is based on a sample of short-period optical variables which are likely optical counterparts of quiescent X-ray sources in omega Centauri (NGC 5139) and NGC 6397. All of the studied candidates have nearly sinusoidal light curves with amplitudes of 0.1--0.35~mag in $V$ and periods of 0.1--1.3~days. This type of variability, most probably originating from the ellipsoidal effect, has been observed in several X-ray novae when they settled into quiescence after an outburst. We find that two of the surveyed systems harbor dim components with masses in excess of one solar masss, making them attractive targets for future investigations. We also suggest that there are two subpopulations of blue stragglers in omega Centauri, differing in mass-transfer history and/or helium content.
description: Accepted by A&A, 8 pages, 6 figures, discussion expanded following the suggestions of the referee
Equation of State of a Dense and Magnetized Fermion System
Creators: name: Ferrer, Efrain J.
name: de la Incera, Vivian
name: Keith, Jason P.
name: Portillo, Israel
name: Springsteen, Paul L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The equation of state of a system of fermions in a uniform magnetic field is obtained in terms of the thermodynamic quantities of the theory by using functional methods. It is shown that the breaking of the O(3) rotational symmetry by the magnetic field results in a pressure anisotropy, which leads to the distinction between longitudinal- and transverse-to-the-field pressures. A criterion to find the threshold field at which the asymmetric regime becomes significant is discussed. This threshold magnetic field is shown to be the same as the one required for the pure field contribution to the energy and pressures to be of the same order as the matter contribution. A graphical representation of the field-dependent anisotropic equation of state of the fermion system is given. Estimates of the upper limit for the inner magnetic field in self-bound stars, as well as in gravitationally bound stars with inhomogeneous distributions of mass and magnetic fields, are also found.
description: Misprints in some equations and in the text were corrected. Some references were added
D-brane non-perturbative effects and geometric deformations
Creators: name: Dymarsky, Anatoly
name: Martucci, Luca
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study how non-perturbative dynamics on D-branes affects the ten-dimensional geometry. We show that a gaugino condensate changes the complex and the symplectic structures of the original manifold by deforming the supersymmetry conditions. The cases of D5, D6 and D7-branes are discussed in detail. In the latter case we find the explicit form of the resulting back-reacted background at linear order in the gaugino condensate.
description: 51 pages; v2 typos corrected
title: Implementierung von ESG-Kriterien in das Risikomanagement von KMU und die Auswirkungen auf deren Finanzierung
Creators: name: Frischknecht, Fabian
Publisher: name: FH Vorarlberg (Fachhochschule Vorarlberg)
Year: 2021
Subjects: subject: 650 Management

description: Die Bedeutung von Nachhaltigkeit steigt stetig und Investoren berücksichtigen immer häufiger ESG-Risiken in deren Investments. Dabei stellt sich die Frage, wie ESG-Kriterien auch in KMU implementiert werden können und welche Auswirkungen wiederum auf deren Finanzierung zu erwarten sind. Es wurde im Zuge der Arbeit sowohl eine quantitative (Umfrage) als auch eine qualitative (Experteninterviews) Untersuchung durchgeführt. Die Berücksichtigung von ESG-Risiken ist ein langfristiger Prozess. Dabei spielen die Schaffung eines Bewusstseins, Generierung von Know-how sowie Bereitstellung einer validen Datengrundlage für die Identifizierung und Bewertung der Risiken eine entscheidende Rolle. Es können für KMU sowohl unmittelbare als auch mittelbare Auswirkungen auf deren Finanzierung erwartet werden. Unmittelbare Auswirkungen sind in KMU bisher selten zu finden, äußern sich aber teilweise durch geringere Finanzierungskosten, die signifikant abhängig von der Ausprägung des Risikomanagements sind. Als mittelbare Effekte konnten Auswirkungen auf die Reputation und finanzielle Performance identifiziert werden, die sich in der Ausfallwahrscheinlichkeit von Unternehmen und damit der Kreditgewährung und Konditionsgestaltung niederschlagen können.
description: The importance of sustainability is growing steadily, and investors are increasingly considering ESG risks in their investments. This raises the question of how ESG criteria can also be implemented in SMEs and what effects can be expected on their financing. In the course of this thesis, a quantitative (survey) and qualitative (expert interviews) research was carried out. The consideration of ESG risks is a long-term process. The creation of awareness, generation of know-how and provision of a valid database for the identification and assessment of risks play a major role. SMEs can expect both direct and indirect effects on their financing. Direct effects are rarely found in SMEs so far, although in some instances they are expressed in the form of lower financing costs, which are significantly dependent on the degree of risk management. As indirect effects, impacts on reputation and financial performance could be identified, which may be reflected in the probability of default of companies and thus in the granting of loans and the terms and conditions.
The Mass of the Black Hole in Cygnus X-1
Creators: name: Orosz, Jerome A.
name: McClintock, Jeffrey E.
name: Aufdenberg, Jason P.
name: Remillard, Ronald A.
name: Reid, Mark J.
name: Narayan, Ramesh
name: Gou, Lijun
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cygnus X-1 is a binary star system that is comprised of a black hole and a massive giant companion star in a tight orbit. Building on our accurate distance measurement reported in the preceding paper, we first determine the radius of the companion star, thereby constraining the scale of the binary system. To obtain a full dynamical model of the binary, we use an extensive collection of optical photometric and spectroscopic data taken from the literature. By using all of the available observational constraints, we show that the orbit is slightly eccentric (both the radial velocity and photometric data independently confirm this result) and that the companion star rotates roughly 1.4 times its pseudosynchronous value. We find a black hole mass of M =14.8\pm1.0 M_{\sun}, a companion mass of M_{opt}=19.2\pm1.9 M_{\sun}, and the angle of inclination of the orbital plane to our line of sight of i=27.1\pm0.8 deg.
description: Paper II of three papers on Cygnus X-1; 27 pages including 5 figures and 3 tables, ApJ in press
The impact of educational travel on high school social studies students
Creators: name: Mergens, David
Publisher: name: University of British Columbia
Year: 2017

description: This study investigates the impact and value that high school social studies students and teachers see in educational travel. Many students and teachers participate in school-based trips, but little research has been done that investigates the deeper implications of educational travel, as to identify and maximize the positive benefits of such experiences. For the purposes of this project, educational travel is defined as school-based educational trips that last longer than a day, and involve elements that include guided tours, hands-on learning, interactive tasks, and community service. Further, I have divided educational travel into three categories that pertain to a trip’s design and focus: 1) tour-guided; 2) task-specific; and 3) socially immersive. Participants in this study included six of my former students and three of my former teaching colleagues. All participants had experiences with educational travel prior to this study. Data were collected through a series of conversational interviews, which I transcribed and analyzed. This allowed me to analyze participant responses and form organizing concepts, to which I plotted emergent categories. My findings showed that students and teachers see tremendous value in educational travel with respect to developing confidence, building historical and global mindedness, and fostering empathy and self-awareness. My findings also showed how educational travel experiences can influence the choices students make later in life regarding post-secondary education, careers, and philanthropy. This study contributes to social studies education scholarship in that it shines light on the impact educational travel has on high school students and offers insight into maximizing the positive benefits associated with such experiences. Nevertheless, this study is small-scale, and further research is needed to address some limitations, which include the implications of educational travel for students from different socio-economic contexts, as well as attaining a deeper understanding of the long-term benefits of educational travel.
Limits on Anomalous Trilinear Gauge Couplings in Zgamma Events from ppbar Collisions at sqrt{s} = 1.96 TeV
Creators: name: CDF Collaboration
name: Aaltonen, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using \Zg\ candidate events collected by the CDF detector at the Tevatron Colli\der, we search for potential anomalous (non-standard-model) couplings between t\he $Z$ boson and the photon. \Zg\ couplings vanish at tree level and are heavil\y suppressed at higher orders; hence any evidence of couplings indicates new ph\ysics. Measurements are performed using data corresponding to an integrated lum\inosity of 4.9 \invfb\ in the $Z \rightarrow ν\barν$ decay channel and 5.\1 \invfb\ in the \Zll\ ($l=μ, e$) decay channels. The combination of these me\asurements provides the most stringent limits to date on \Zg\ trilinear gauge c\ouplings. Using an energy scale of $Λ= 1.5$\ TeV to allow for a direct c\omparison with previous measurements, we find limits on the CP-conserving param\eters that describe \Zg\ couplings to be $|h_3^{γ,Z}| < 0.022 $ and $|h_4^\{γ,Z}| < 0.0009$. These results are consistent with standard model predict\ions.
description: Seven pages, one figure. To be submitted to Phys. Rev. Lett
Interface effects in d-wave superconductor-ferromagnet junctions
Creators: name: Kirzhner, T.
name: Koren, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Measurements of the differential conductance spectra of YBa2Cu3O7-SrRuO3 and YBa2Cu3O7-La0.67Ca_0.33MnO3 ramp-type junctions along the node and anti-node directions are reported. The results are consistent with a crossed Andreev reflection effect only in YBa2Cu3O7-SrRuO3 junctions where the domain wall width of SrRuO3 is comparable with the coherence length of YBa2Cu3O7. No such effect was observed in the YBa2Cu3O7-La0.67Ca0.33MnO3 junctions, which is in line with the much larger (x10) domain wall width of La0.67Ca0.33MnO3. We also show that crossed Andreev exists only in the anti-node direction. Furthermore, we find evidence that crossed Andreev in YBa2Cu3O7 junctions is not sensitive to nm-scale interface defects, suggesting that the length scale of the crossed Andreev effect is larger than the coherence length, but still smaller than the La0.67Ca0.33MnO3's domain wall width.
description: 5 pages, 6 figures
Infrared Sensitivity of Unstable Vacua
Creators: name: Krotov, Dmitry
name: Polyakov, Alexander M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discover that some unstable vacua have long memory. By that we mean that even in the theories containing only massive particles, there are correllators and expectation values which grow with time. We examine the cases of instabilities caused by the constant electric fields, expanding and contracting universes and, most importantly, the global de Sitter space. In the last case the interaction leads to a remarkable UV/IR mixing and to a large back reaction. This gives reasons to believe that the cosmological constant problem could be resolved by the infrared physics.
description: 23 pages, references added
Diane Posing in Dress
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Women
Dresses
Clothing & dress

description: This image shows a young blond woman, Diane, in a white A-line dress, sans cardigan. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
The Extreme Spin of the Black Hole in Cygnus X-1
Creators: name: Gou, Lijun
name: McClintock, Jeffrey E.
name: Reid, Mark J.
name: Orosz, Jerome A.
name: Steiner, James F.
name: Narayan, Ramesh
name: Xiang, Jingen
name: Remillard, Ronald A.
name: Arnaud, Keith A.
name: Davis, Shane W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The compact primary in the X-ray binary Cygnus X-1 was the first black hole to be established via dynamical observations. We have recently determined accurate values for its mass and distance, and for the orbital inclination angle of the binary. Building on these results, which are based on our favored (asynchronous) dynamical model, we have measured the radius of the inner edge of the black hole's accretion disk by fitting its thermal continuum spectrum to a fully relativistic model of a thin accretion disk. Assuming that the spin axis of the black hole is aligned with the orbital angular momentum vector, we have determined that Cygnus X-1 contains a near-extreme Kerr black hole with a spin parameter a/M>0.95 (3σ). For a less probable (synchronous) dynamical model, we find a/M>0.92 (3σ). In our analysis, we include the uncertainties in black hole mass, orbital inclination angle and distance, and we also include the uncertainty in the calibration of the absolute flux via the Crab. These four sources of uncertainty totally dominate the error budget. The uncertainties introduced by the thin-disk model we employ are particularly small in this case given the extreme spin of the black hole and the disk's low luminosity.
description: Paper III of three papers on Cygnus X-1; 21 pages including 5 figures and 12 tables, ApJ in press. The paper is significantly restructured; two further tests of the robustness of our spin measurement are presented, and our error analysis has been substantially improved; the conclusions are unchanged
title: Are some languages more complex than others? On text complexity and how to measure it
Creators: name: Korzen, Iørn
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2021

description: In this paper, I discuss the concept of linguistic complexity, which has been high on the linguistic agenda during the last few decades (Merlini Barbaresi (ed.) 2003, Sampson et al. (eds.) 2009, Moretti 2018 and many others). I first cite the most important definitions of complexity proposed by different scholars, I then apply and compare particular elements of these definitions to linguistic phenomena found in two specific languages, Italian and Danish. I focus mainly on the number of propositions per sentence and on the degree of their subordination (as conveyed by verb implicitness and nominalisation), two manifestations of complexity that are numerically measurable and cross-linguistically comparable. I give both cross- and intralinguistic examples taken from comparable texts that exhibit differences in these kinds of complexity, and in this way I demonstrate that linguistic complexity is clearly linked to and dependent on the language type in question as well as the given uses and people. In the case of Italian, we might talk about a “language-internal multilingualism”. However, I conclude the paper by giving a positive answer to my question: Some languages are indeed more complex than others.
description: Globe: A Journal of Language, Culture and Communication, Vol. 12 (2021)
Quantum chaos in one dimension?
Creators: name: Ujfalusi, Laszlo
name: Varga, Imre
name: Schumayer, Daniel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we investigate the inverse of the celebrated Bohigas-Giannoni-Schmit conjecture. Using two inversion methods we compute a one-dimensional potential whose lowest N eigenvalues obey random matrix statistics. Our numerical results indicate that in the asymptotic limit, N->infinity, the solution is nowhere differentiable and most probably nowhere continuous. Thus such a counterexample does not exist.
description: 7 pages, 10 figures, minor correction, references extended
Reduction of low-frequency 1/f noise in Al-AlOx-Al tunnel junctions by thermal annealing
Creators: name: Julin, Juhani
name: Koppinen, Panu
name: Maasilta, Ilari
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report that annealing Al-AlOx-Al tunnel junctions in a vacuum chamber at temperature of 400C reduces the characteristic 1/f noise in the junctions, in some cases by an order of magnitude. Both ultra high vacuum and high vacuum fabricated samples demonstrated a significant reduction in the 1/f noise level. Temperature dependence of the noise was studied between 4.2 and 340 Kelvin, with a linear dependence below 100 K, but a faster increase above. The results are consistent with a model where the density of charge trapping two level-systems within the tunneling barrier is reduced by the annealing process.
Index computations in Rabinowitz Floer homology
Creators: name: Merry, Will J.
name: Paternain, Gabriel P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this note we study two index questions. In the first we establish the relationship between the Morse indices of the free time action functional and the fixed time action functional. The second is related to Rabinowitz Floer homology. Our index computations are based on a correction term which is defined as follows: around a non-degenerate Hamiltonian orbit lying in a fixed energy level a well-known theorem says that one can find a whole cylinder of orbits parametrized by the energy. The correction term is determined by whether the periods of the orbits are increasing or decreasing as one moves up the orbit cylinder. We also provide an example to show that, even above the Mañé critical value, the periods may be increasing thus producing a jump in the Morse index of the free time action functional in relation to the Morse index of the fixed time action functional.
description: 20 pages - V3 - Final version to appear in JFPTA, improved results
Two Girls Ride bicycle
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Women
Cycling

description: This image contains two images of two young girls on a bicycle. In the top image, one girl is on the bike while the other holds it. In the bottom image, both girls hold the bike. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Tree-level Recursion Relation and Dual Superconformal Symmetry of the ABJM Theory
Creators: name: Gang, Dongmin
name: Huang, Yu-tin
name: Koh, Eunkyung
name: Lee, Sangmin
name: Lipstein, Arthur E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a recursion relation for tree-level scattering amplitudes in three-dimensional Chern-Simons-matter theories. The recursion relation involves a complex deformation of momenta which generalizes the BCFW-deformation used in higher dimensions. Using background field methods, we show that all tree-level superamplitudes of the ABJM theory vanish for large deformations, establishing the validity of the recursion formula. Furthermore, we use the recursion relation to compute six-point and eight-point component amplitudes and match them with independent computations based on Feynman diagrams or the Grassmannian integral formula. As an application of the recursion relation, we prove that all tree-level amplitudes of the ABJM theory have dual superconformal symmetry. Using generalized unitarity methods, we extend this symmetry to the cut-constructible parts of the loop amplitudes.
description: 52 pages, 14 figures; v2. a section on loop amplitudes and references added; v3. minor improvements to conform with the published version
Indirect stabilization of weakly coupled systems with hybrid boundary conditions
Creators: name: Alabau-Boussouira, F.
name: Cannarsa, P.
name: Guglielmi, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 93D15, 35L53, 47D06, 46B70

description: We investigate stability properties of indirectly damped systems of evolution equations in Hilbert spaces, under new compatibility assumptions. We prove polynomial decay for the energy of solutions and optimize our results by interpolation techniques, obtaining a full range of power-like decay rates. In particular, we give explicit estimates with respect to the initial data. We discuss several applications to hyperbolic systems with {\em hybrid} boundary conditions, including the coupling of two wave equations subject to Dirichlet and Robin type boundary conditions, respectively.
Open Science, Open Data. Forschungsdatenmanagement.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: FDM
Forschungsdaten
Forschungsdatenmanagement
Open Science
Research Data
Research Data Management

description: Poster-Update! Info:  Die digitale "Autumn School" (im "mini" - Format) verfolgt inhaltlich das Ziel über Neuigkeiten im Bereich Open Science und Open Data zu informieren und dabei außerdem über bewährte und nicht-bewährte Forschungswerkzeuge zu sprechen. Expertinnen und Experten kommen hier zu den "Open" - Themen zusammen. Wissenschaftliche Bibliotheken sollten, je nach Ressourcen, die Generation "O" durch ihre Dienste unterstützen (Data Publishing/Data Sharing, Metadatenmanagement, usw.). Wie werden bereits Lösungen im Zusammenhang mit den Anforderungen aus der "Scientific Community" standardisiert umgesetzt (Good Practices, z.B. "Open Data")? Wo liegen die Probleme (Fallbeispiele)?
The theory of quantum levitators
Creators: name: Impens, François
name: Santos, Franck Pereira Dos
name: Bordé, Christian J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a unified theory for clocks and gravimeters using the interferences of multiple atomic waves put in levitation by traveling light pulses. Inspired by optical methods, we exhibit a propagation invariant, which enables to derive analytically the wave function of the sample scattering on the light pulse sequence. A complete characterization of the device sensitivity with respect to frequency or to acceleration measurements is obtained. These results agree with previous numerical simulations and confirm the conjecture of sensitivity improvement through multiple atomic wave interferences. A realistic experimental implementation for such clock architecture is discussed.
description: 11 pages, 6 Figures. Minor typos corrected. Final version
Examining subgrid models of supermassive black holes in cosmological simulation
Creators: name: Sutter, P. M.
name: Ricker, P. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: While supermassive black holes (SMBHs) play an important role in galaxy and cluster evolution, at present they can only be included in large-scale cosmological simulation via subgrid techniques. However, these subgrid models have not been studied in a systematic fashion. Using a newly-developed fast, parallel spherical overdensity halo finder built into the simulation code FLASH, we perform a suite of dark matter-only cosmological simulations to study the effects of subgrid model choice on relations between SMBH mass and dark matter halo mass and velocity dispersion. We examine three aspects of SMBH subgrid models: the choice of initial black hole seed mass, the test for merging two black holes, and the frequency of applying the subgrid model. We also examine the role that merging can play in determining the relations, ignoring the complicating effects of SMBH-driven accretion and feedback. We find that the choice of subgrid model can dramatically affect the black hole merger rate, the cosmic SMBH mass density, and the low-redshift relations to halo properties. We also find that it is possible to reproduce observations of the low-redshift relations without accretion and feedback, depending on the choice of subgrid model.
description: 12 pages, 12 figures, revised from referee comments, accepted by ApJ
Electron-capture supernovae as the origin of elements beyond iron
Creators: name: Wanajo, Shinya
name: Janka, Hans-Thomas
name: Mueller, Bernhard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We examine electron-capture supernovae (ECSNe) as sources of elements heavier than iron in the solar system and in Galactic halo stars. Nucleosynthesis calculations are performed on the basis of thermodynamic histories of mass elements from a fully self-consistent, two-dimensional (2D) hydrodynamic explosion model of an ECSN. We find that neutron-rich convective lumps with an electron fraction down to Ye,min=0.40, which are absent in the one-dimensional (1D) counterpart, allow for interesting production of elements between the iron group and N=50 nuclei (from Zn to Zr, with little Ga) in nuclear (quasi-)equilibrium. Our models yield very good agreement with the Ge, Sr, Y, and Zr abundances of r-process deficient Galactic halo stars and constrain the occurrence of ECSNe to ~4% of all stellar core-collapse events. If tiny amounts of additional material with slightly lower Ye,min down to ~0.30-0.35 were also ejected - which presently cannot be excluded because of the limitations of resolution and two-dimensionality of the model -, a weak r-process can yield elements beyond N=50 up to Pd, Ag, and Cd as observed in the r-process deficient stars.
description: 5 pages, 5 figures, accepted for publication in ApJ Letters
A nonparametric empirical Bayes framework for large-scale multiple testing
Creators: name: Martin, Ryan
name: Tokdar, Surya T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: We propose a flexible and identifiable version of the two-groups model, motivated by hierarchical Bayes considerations, that features an empirical null and a semiparametric mixture model for the non-null cases. We use a computationally efficient predictive recursion marginal likelihood procedure to estimate the model parameters, even the nonparametric mixing distribution. This leads to a nonparametric empirical Bayes testing procedure, which we call PRtest, based on thresholding the estimated local false discovery rates. Simulations and real-data examples demonstrate that, compared to existing approaches, PRtest's careful handling of the non-null density can give a much better fit in the tails of the mixture distribution which, in turn, can lead to more realistic conclusions.
description: 18 pages, 4 figures, 3 tables
Woman in Dark Handkerchief
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Girls
Women
Clothing & dress
Portraits
Portrait photographs

description: This image shows a woman in a pale dress with a dark kerchief around her neck. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
title: Monolithic multigrid for higher-order discretizations of poroelasticity
Creators: name: Vijendiran, Selvabavitha
Publisher: name: Memorial University of Newfoundland
publisherIdentifier: https://ror.org/04haebc03
publisherIdentifierScheme: ROR
Year: 2024

description: Mathematical models of poroelasticity, the study of the behaviour of uid-saturated porous media, present complex challenges in numerical simulation due to their inherent coupling between uid and solid phases. In this study, we propose higher-order discretization techniques for poroelasticity problems, that we couple with monolithic multigrid methods to enable efficient high-fidelity simulations. These discretizations are based on higher-order finite elements in space (including reduced quadrature techniques to effectively model nearly incompressible solid phases) and implicit Runge- Kutta methods in time, to ensure robustness and stability in the time-stepping procedure. The monolithic multigrid approach leverages recent work extending Vanka-style relaxation to incompressible ow models, that we adapt to the equations of poroelasticity. Through numerical experiments and comparisons, we demonstrate the effectiveness of our proposed approach in accurately capturing the behaviour of poroelastic models while maintaining computational efficiency.
Testing SO(10)-inspired leptogenesis with low energy neutrino experiments
Creators: name: Di Bari, Pasquale
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the results of a previous analysis of ours showing that, when both heavy and light flavour effects are taken into account, successful minimal (type I + thermal) leptogenesis with SO(10)-inspired relations is possible. Barring fine tuned choices of the parameters, these relations enforce a hierarchical RH neutrino mass spectrum that results into a final asymmetry dominantly produced by the next-to-lightest RH neutrino decays (N_2 dominated leptogenesis). We present the constraints on the whole set of low energy neutrino parameters. Allowing a small misalignment between the Dirac basis and the charged lepton basis as in the quark sector, the allowed regions enlarge and the lower bound on the reheating temperature gets relaxed to values as low as ~ 10^10 GeV. It is confirmed that for normal ordering (NO) there are two allowed ranges of values for the lightest neutrino mass: m_1 \simeq (1-5)\times 10^-3 eV and m_1\simeq (0.03-0.1) eV. For m_1\lesssim 0.01 eV the allowed region in the plane theta_13-theta_23 is approximately bounded by 44 + 3(theta_13-9) \lesssim theta_23 \lesssim 48 + 0.4 (theta_13-5), while the neutrinoless double beta decay effective neutrino mass falls in the range m_ee=(1-3)10^-3 eV for theta_13=(6 -11.5). For m_1 \gtrsim 0.01 eV, one has quite sharply m_ee\simeq m_1 and an upper bound theta_23 \lesssim 46 . These constraints will be tested by low energy neutrino experiments during next years. We also find that inverted ordering (IO), though quite strongly constrained, is not completely ruled out. In particular, we find approximately theta_23 \simeq 43 +12 log(0.2 eV/m_1), that will be fully tested by future experiments.
description: 32 pages, 13 figures; In v2 Added: 3 Ref.'s, more details on procedure for scatter plots, 1 paragraph in final remarks, more panels in Fig.1, more solutions in Figs. 10-12 (global scan) with more precise determination of theta_13-theta_23 allowed region at low m_1; version to be published in JCAP
Heterodyne non-demolition measurements on cold atomic samples: towards the preparation of non-classical states for atom interferometry
Creators: name: Bernon, Simon
name: Vanderbruggen, Thomas
name: Kohlhaas, Ralf
name: Bertoldi, Andrea
name: Landragin, Arnaud
name: Bouyer, Philippe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on a novel experiment to generate non-classical atomic states via quantum non-demolition (QND) measurements on cold atomic samples prepared in a high finesse ring cavity. The heterodyne technique developed for the QND detection exhibits an optical shot-noise limited behavior for local oscillator optical power of a few hundred \muW, and a detection bandwidth of several GHz. This detection tool is used in single pass to follow non destructively the internal state evolution of an atomic sample when subjected to Rabi oscillations or a spin-echo interferometric sequence.
description: 23 pages
Equation of State of nuclear matter in a Virial expansion of nucleons and nuclei
Creators: name: Shen, G.
name: Horowitz, C. J.
name: Teige, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the equation of state (EOS) of nuclear matter at subnuclear density in a Virial expansion for a nonideal gas. The gas consists of neutrons, protons, alpha particles, and 8980 species of nuclei with $A \ge 12$ and masses from the finite-range droplet model (FRDM). At very low density, the Virial expansion reduces to nuclear statistical equilibrium. At higher density, the Virial results match smoothly to the relativistic mean field results discussed in our previous paper. We tabulate the resulting EOS at over 73,000 grid points in the temperature range $T$ = 0.158 to 15.8 MeV, the density range $n_B$ = 10$^{-8}$ to 0.1 fm$^{-3}$, and the proton fraction range $Y_P$ = 0.05 to 0.56. In the future we plan to match these low density results to our earlier high density mean field results, and generate a full EOS table for use in supernova and neutron star merger simulations. This Virial EOS is exact in the low density limit.
description: 15 pages, minor changes, Physical Review C in press
NIR-Emitting Gold Nanoclusters–Modified Gelatin Nanoparticles as a Bioimaging Agent in Tissue
Creators: name: El-Sayed, Nesma
name: Trouillet, Vanessa
name: Clasen, Anne
name: Jung, Gregor
name: Hollemeyer, Klaus
name: Schneider, Marc
Publisher: name: FID GEO
Year: 2019

description: Abstract Gold nanocluster (AuNC) synthesis using a well-distinguished polymer for nanoparticle-mediated drug delivery paves the way for developing efficient theranostics based on pharmaceutically accepted materials. Gelatin-stabilized AuNCs are synthesized and modified by glutathione for tuning the emission spectra. Addition of silver ions enhances the fluorescence, reaching also high quantum yield (26.7%). A simplified model can be proposed describing the nanoclusters' properties–structure relationship based on X-ray photoelectron spectroscopy data and synthesis sequence. Furthermore, these modifications improve fluorescence stability toward pH changes and enzymatic degradation, offering different AuNCs for various applications. The impact of nanocluster formation on gelatin structure integrity is investigated by Fourier transform infrared spectrometry and matrix-assisted laser desorption/ionization time of flight mass spectroscopy, being important to further formulate gelatin nanoparticles (GNPs). The 218 nm-sized NPs show no cytotoxicity up to 600 µg mL−1 and are imaged in skin, as a challenging autofluorescent tissue, by confocal microscopy, when transcutaneously delivered using dissolving microneedles. Linear unmixing allows simultaneous imaging of AuNCs–GNPs and skin with accurate signal separation. This underlines the great potential for bioimaging of this system to better understand nanomaterials' behavior in tissue. Additionally, it is drug delivery system also potentially serving as a theranostic system.
Structure in the 3D Galaxy Distribution: I. Methods and Example Results
Creators: name: Way, M. J.
name: Gazis, P. R.
name: Scargle, Jeffrey D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Three methods for detecting and characterizing structure in point data, such as that generated by redshift surveys, are described: classification using self-organizing maps, segmentation using Bayesian blocks, and density estimation using adaptive kernels. The first two methods are new, and allow detection and characterization of structures of arbitrary shape and at a wide range of spatial scales. These methods should elucidate not only clusters, but also the more distributed, wide-ranging filaments and sheets, and further allow the possibility of detecting and characterizing an even broader class of shapes. The methods are demonstrated and compared in application to three data sets: a carefully selected volume-limited sample from the Sloan Digital Sky Survey redshift data, a similarly selected sample from the Millennium Simulation, and a set of points independently drawn from a uniform probability distribution -- a so-called Poisson distribution. We demonstrate a few of the many ways in which these methods elucidate large scale structure in the distribution of galaxies in the nearby Universe.
description: Re-posted after referee corrections along with partially re-written introduction. 80 pages, 31 figures, ApJ in Press. For full sized figures please download from: http://astrophysics.arc.nasa.gov/~mway/lss1.pdf
Super-acceleration in non-minimal derivative coupling model
Creators: name: Sadjadi, H. Mohseni
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A scalar field model with non-minimal derivative coupling to gravity is considered. It is shown that although in the absence of matter and potential the phantom divide line crossing is forbidden, but for the power law potential and in the presence of matter this crossing is, in principle, possible.
description: 8 pages, references added, brief report, accepted for publication in Phys. Rev. D
title: Journal of Prison Education and Reentry Vol. 7, No. 2 (2021) Special Issue 2021: Critical Reflections on Philosophy, Education, and Prison Sociology. Full Issue
Creators: name: Journal Of Prison Education And Reentry
Publisher: name: VCU Libraries
Year: 2021

description: Journal of Prison Education and Reentry. Vol. 7, No. 2 (2021)