cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the accuracy of common moment-based radiative transfer methods for simulating reionization
Creators: name: Wu, Xiaohan
name: McQuinn, Matthew
name: Eisenstein, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Cosmological simulations of reionization often treat radiative transfer by solving for the monopole and dipoles of the intensity field and by making ansatz for the quadrupole moments to close the system of equations. We investigate the accuracy of the most common closure methods, i.e. Eddington tensor choices. We argue that these algorithms are most likely to err after reionization and study quasi-analytic test problems mimicking these situations: large-scale post-reionization ionizing background fluctuations and radiative transfer in a predominantly ionized medium with discrete absorbers. We show that OTVET and M1 over-ionize self-shielding absorbers when fixing the background photoionization rate, leading to 30-40% higher emissivity to balance the increased recombination. This over-ionization results in a simulation run with these algorithms having a factor of ~2 lower average metagalactic photoionization rate relative to truth given an ionizing emissivity. Furthermore, these algorithms are unlikely to reproduce ionizing background fluctuations on scales below the photon mean path: OTVET tends to overpredict the fluctuations there when the simulation box is smaller than twice the mean free path and underpredict otherwise, while M1 drastically underpredicts these fluctuations. As a result, these numerical methods are likely not sufficiently accurate to interpret the Ly$α$ forest opacity fluctuations observed after reionzation. We show that a high number of angular directions need to be followed to capture the post-reionization ionizing background fluctuations accurately with ray-tracing codes. Lastly, we argue that the strong dependence of the post-reionization ionizing background on the value of the reduced speed of light found in many simulations signals that the ionizing photon mean free path is several times larger in such simulations than the observationally measured value.
description: revision 1, submitted to JCAP
X-Ray Emission from Jupiter, Saturn, and Earth: A Short Review
Creators: name: Bhardwaj, Anil
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Jupiter, Saturn, and Earth - the three planets having dense atmosphere and a well developed magnetosphere - are known to emit X-rays. Recently, Chandra X-ray Observatory has observed X-rays from these planets, and XMM-Newton has observed them from Jupiter and Saturn. These observations have provided improved morphological, temporal, and spectral characteristics of X-rays from these planets. Both auroral and non-auroral (low-latitude) 'disk' X-ray emissions have been observed on Earth and Jupiter. X-rays have been detected from Saturn's disk, but no convincing evidence for X-ray aurora on Saturn has been observed. The non-auroral disk X-ray emissions from Jupiter, Saturn, and Earth, are mostly produced due to scattering of solar X-rays. X-ray aurora on Earth is mainly generated via bremsstrahlung from precipitating electrons and on Jupiter via charge exchange of highlyionized energetic heavy ions precipitating into the polar atmosphere. Recent unpublished work suggests that at higher (>2 keV) energies electron bremsstrahlung also plays a role in Jupiter's X-ray aurora. This paper summarizes the recent results of X-ray observations on Jupiter, Saturn, and Earth mainly in the soft energy (~0.1-2.0 keV) band and provides a comparative overview.
description: 17 pages, 12 figures
Radiation hardness tests of Si detectors for Time of Flight measurements at the Super-FRS
Creators: name: Kiselev, O.
name: Bezbakh, A.
name: Egorov, N.
name: Eremin, I.
name: Eremin, V.
name: Fadeeva, N.
name: Fomichev, A.
name: Golovkov, M.
name: Golubkov, S.
name: Gorshkov, A.
name: Knyazev, A.
name: Konkov, C.
name: Kostyleva, D.
name: Krupko, S.
name: Mitina, D.
name: Mukha, I.
name: Nociforo, C.
name: Prochazka, A.
name: Schirru, F.
name: Slepnev, R.
name: Shepelev, A.
name: Tuboltsev, Y.
name: Verbitskaya, E.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Conformal field theories on deformed spheres, anomalies, and supersymmetry
Creators: name: Minahan, Joseph A.
name: Naseer, Usman
name: Thull, Charles
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the free energy of four-dimensional CFTs on deformed spheres. For generic nonsupersymmetric CFTs only the coefficient of the logarithmic divergence in the free energy is physical, which is an extremum for the round sphere. We then specialize to $\mathcal{N}=2$ SCFTs where one can preserve some supersymmetry on a compact manifold by turning on appropriate background fields. For deformations of the round sphere the $c$ anomaly receives corrections proportional to the supersymmetric completion of the (Weyl)$^2$ term, which we determine up to one constant by analyzing the scale dependence of various correlators in the stress-tensor multiplet. We further show that the double derivative of the free energy with respect to the marginal couplings is proportional to the two-point function of the bottom components of the marginal chiral multiplet placed at the two poles of the deformed sphere. We then use anomaly considerations and counter-terms to parametrize the finite part of the free energy which makes manifest its dependence on the Kähler potential. We demonstrate these results for a theory with a vector multiplet and a massless adjoint hypermultiplet using results from localization. Finally, by choosing a special value of the hypermultiplet mass where the free energy is independent of the deformation, we derive an infinite number of constraints between various integrated correlators in $\mathcal{N}=4$ super Yang-Mills with any gauge group and at all values of the coupling, extending previous results.
description: 29 pages+appendix, typos fixed, several clarifying comments added in sec. 4
Chaotic and pseudochaotic attractors of perturbed fractional oscillator
Creators: name: Zaslavsky, G. M.
name: Stanislavsky, A. A.
name: Edelman, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a nonlinear oscillator with fractional derivative of the order alpha. Perturbed by a periodic force, the system exhibits chaotic motion called fractional chaotic attractor (FCA). The FCA is compared to the ``regular'' chaotic attractor. The properties of the FCA are discussed and the ``pseudochaotic'' case is demonstrated.
description: 20 pages, 7 figures
Inflationary Solutions in Nonminimally Coupled Scalar Field Theory
Creators: name: Koh, Seoktae
name: Kim, Sang Pyo
name: Song, Doo Jong
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study analytically and numerically the inflationary solutions for various type scalar potentials in the nonminimally coupled scalar field theory. The Hamilton-Jacobi equation is used to deal with nonlinear evolutions of inhomogeneous spacetimes and the long-wavelength approximation is employed. The constraints that lead to a sufficient inflation are found for the nonminimal coupling constant and initial conditions of the scalar field for inflation potentials. In particular, we numerically find an inflationary solution in the new inflation model of a nonminimal scalar field.
description: 19 pages, 17 figures
Can we make sense out of "Tensor Field Theory"?
Creators: name: Rivasseau, Vincent
name: Vignes-Tourneret, Fabien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue the constructive program about tensor field theory through the next natural model, namely the rank five tensor theory with quartic melonic interactions and propagator inverse of the Laplacian on $U(1)^5$. We make a first step towards its construction by establishing its power counting, identifiying the divergent graphs and performing a careful study of (a slight modification of) its RG flow. Thus we give strong evidence that this just renormalizable tensor field theory is non perturbatively asymptotically free.
description: Comments welcome ; typos corrected, introduction expanded, references added
— Tachigrafie del blu. Il diario di viaggio di Vittoria Galli Contini Bonacossi (26 marzo - 7 aprile 1932)
Creators: name: Salvadori, Diego
Publisher: name: Firenze University Press
Year: 2015
Subjects: autobiography; diary; Gender Studies; travel literature; Vittoria Galli Contini Bonacossi

description: This article presents an unpublished diary (March-April 1932) of Vittoria Contini Bonacossi, held by the Archivio di Stato in Florence. Analysis of this document shows how the diary goes beyond the typical characteristics of this literary genre – as a mere registration of facts –, to become a means of communication with a hypothetical posterity.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
The statistical validity of using ratio variables in human kinetics research
Creators: name: Liu, Yuanlong
Publisher: name: University of British Columbia
Year: 2009

description: There were two main purposes of this investigation. The first was to examine the validity and reliability of commonly used ratio variables in human kinetics research, and to evaluate four ratio score models used to deflate the effect of the denominator. The second was to use computer simulation procedures to investigate the effect of using ratio variables on the circularity assumption of the covariance matrix and type I error rates in RM ANOVA tests. It is shown that a suitable common deflation model for all ratio variables may not exist, and different models should be used to derive an appropriate deflation model in empirical research. The results indicate that high reliability of the component variables does not necessarily result in high reliability of the transformed ratio variable. Thus, when a ratio variable is used the reliability should be examined based on the ratio variable data. It is recommended that five criteria be used to evaluate and compare the validity of deflation models: (a) zero correlation between a derived ratio variable and the denominator variable, (b) no curvilinear relationship between the derived ratio and the denominator in the scatterplots, (c) equality of the estimated expected value of the model and calculated mean of the derived ratio data, (d) high R², and (e) high reliability of the derived ratio data. Simulation results show that the characteristics (ε[sub x1], ε[sub x2], V[sub x1]/ V[sub x2], and pxiX2) of the two component variables strongly affect ε[sub x1/x2] and the type I error rate. In the condition ε[sub x1]= ε[sub x2], the magnitude of ε[sub x1/X2] is virtually the same as that of ε[sub x1] and ε[sub x2], regardless the level of ρ[sub x1x2] and V[sub x1]/ V[sub x2]. When ε[sub x1]<1.0 and ε[sub x2]=1.0, exi/X2 tends to have smaller magnitudes when ρ[sub x1x2] and V[sub x1]/ V[sub x2] are high, and greater magnitudes when ρ[sub x1x2] and V[sub x1]/ V[sub x2] are low. ^ε[sub x1/X2] exhibited the greatest bias and the largest standard deviation, resulting in a serious inflation of type I error rate in the condition V[sub x1]/ V[sub x2]=0.5, regardless of the conditions ε[sub x1], ε[sub x2], and ρ[sub x1x2] . If homogeneity of the denominator variable (small V[sub x2]) and large sample size are present, it may reduce the likelihood of bias in ^ε[sub x1/X2] and protect the type I error rate.
— Come raggiungere la finzione. Dal laboratorio creativo di Grazia Livi (1993-1994)
Creators: name: Salvadori, Diego
Publisher: name: Firenze University Press
Year: 2015
Subjects: autobiography; Gender Studies; Grazia Livi; literature theory; short story

description: This article introduces unpublished writings by Grazia Livi, held by the Archivio di Stato in Florence, sketching her biography and highlighting the connection between journalism and creative writing. We pass on to the short story Un complice (1994), examining its genesis by means of the manuscripts presented here.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Effects of Environment Dependence of Neutrino Mass versus Solar and Reactor Neutrino Data
Creators: name: Gonzalez-Garcia, M. C.
name: de Holanda, P. C.
name: Funchal, R. Zukanovich
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study the phenomenological consequences of the environment dependence of neutrino mass on solar and reactor neutrino phenomenology. Such dependence can be induced, for example, by Yukawa interactions with a light scalar particle which couples to neutrinos and matter and it is expected, among others, in mass varying neutrino scenarios. Under the assumption of one mass scale dominance, we perform a global analysis of solar and KamLAND neutrino data which depends on 4 parameters: the two standard oscillation parameters, Delta m^2 and tan^2(theta), and two new coefficients, which parameterize the environment dependence of the neutrino mass. We find that, generically, the inclusion of the environment dependent terms does not lead to a very statistically significant improvement on the description of the data in the most favoured MSW LMA (or LMA-I) region. It does, however, substantially improve the fit in the high-Delta m^2 LMA (or LMA-II) region which can be allowed at 98.9% CL. Conversely the analysis allow us to place stringent constraints on the size of the environment dependence terms, which can be translated on a bound on the product of the effective neutrino-scalar (lambda^ν) and matter-scalar (lambda^N) Yukawa couplings, as a function of the scalar field mass (m_S) in these models.
description: final version to appear in Phys.Rev.D
Plasmons in Two-Dimensional Topological Insulators
Creators: name: Schlömer, Henning
name: Jiang, Zhihao
name: Haas, Stephan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyze collective excitations in models of two-dimensional topological insulators using the random phase approximation. In a two-dimensional extension of the Su-Schrieffer-Heeger model, edge plasmonic excitations with induced charge-density distributions localized at the boundaries of the system are found in the topologically non-trivial phase, dispersing similarly as one-dimensional bulk plasmons in the conventional Su-Schrieffer-Heeger chain. For two-dimensional bulk collective modes, we reveal regimes of enhanced inter-band wave function correlations, leading to characteristic hardening and softening of inter- and intra-band bulk plasmonic branches, respectively. In the two-dimensional Haldane Chern insulator model, chiral, uni-directional edge plasmons in nano-ribbon architectures are observed, which can be characterized by an effective Coulomb interaction cross section. Bulk collective excitations in the two-dimensional Haldane model are shown to be originated by single-particle band structure details in different topological phases.
— L’ultimo sguardo. Alcuni inediti di Rina Sara Virgillito (1980-1982, 1995-1996)
Creators: name: Fiume, Valentina
Publisher: name: Firenze University Press
Year: 2015
Subjects: Gender Studies, mysticism, poems, Rina Sara Virgillito

description: This article introduces unpublished poems and drawings, held by the Archivio di Stato in Florence, written by Rina Sara Virgillito analysing how poetry can sometimes be an autobiography and exploring many aspects of the writer’s personality. The commentary on the last poems is an important contribution to further knowledge of this twentieth century writer.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
MPEC 2024-A81 : 2024 AR1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 AR1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The role of the rigged Hilbert space in Quantum Mechanics
Creators: name: de la Madrid, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There is compelling evidence that, when continuous spectrum is present, the natural mathematical setting for Quantum Mechanics is the rigged Hilbert space rather than just the Hilbert space. In particular, Dirac's bra-ket formalism is fully implemented by the rigged Hilbert space rather than just by the Hilbert space. In this paper, we provide a pedestrian introduction to the role the rigged Hilbert space plays in Quantum Mechanics, by way of a simple, exactly solvable example. The procedure will be constructive and based on a recent publication. We also provide a thorough discussion on the physical significance of the rigged Hilbert space.
description: 29 pages, 2 figures; a pedestrian introduction to the rigged Hilbert space
— Angela e Vera (1944, 1995, 2015)
Creators: name: Scattigno, Anna
Publisher: name: Firenze University Press
Year: 2015
Subjects: August 1944; Florence; Resistenza; Second World War; women

description: The text of a reading session held in Florence, at the Sala delle Feste in Palazzo Bastogi, on March 20th 2015 is presented here. This is a reconstruction taken from two interviews which took place in 1995, where two woman partisans recount their experiences in the Florence of 1944, at the time of the anti-Fascist Resistance Movement and the Liberation of the city.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Tunneling in suspended carbon nanotubes assisted by longitudinal phonons
Creators: name: Sapmaz, S.
name: Jarillo-Herrero, P.
name: Blanter, Ya. M.
name: Dekker, C.
name: van der Zant, H. S. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Current-voltage characteristics of suspended single-wall carbon nanotube quantum dots show a series of steps equally spaced in voltage. The energy scale of this harmonic, low-energy excitation spectrum is consistent with that of the longitudinal low-k phonon mode (stretching mode) in the nanotube. Agreement is found with a Franck-Condon-based model in which the phonon-assisted tunneling process is modeled as a coupling of electronic levels to underdamped quantum harmonic oscillators. Comparison with this model indicates a rather strong electron-phonon coupling factor of order unity.
description: 4 pages
Asplund operators and the Szlenk index
Creators: name: Brooker, Philp A. H.
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: QA322.2.B76 2010
subject: Banach spaces
subject: Operator ideals

description: This thesis constitutes an investigation into the Szlenk index of operators acting between Banach spaces, primarily in the context of operator ideal theory. Roughly speaking, the Szlenk index measures the complexity of certain sets in dual Banach spaces, and it has become a standard tool of the trade in Banach space theory since its introduction by W. Szlenk in 1968. The starting point of this thesis is a proof that there is a class of closed operator ideals naturally associated with the Szlenk index. We study their basic operator ideal properties and their relationship with the well-known operator ideals of separable range operators and Asplund operators. We provide a detailed analysis of the behaviour of the Szlenk index under taking direct sums of operators, ultimately applying the techniques we develop to this end in an investigation of factorisation properties of the closed operator ideals associated with the Szlenk index.
Linda Di Martino, La Donna d’Oro. Miserie e nobiltà della Firenze perduta
Creators: name: Bacchereti, Elisabetta
Publisher: name: Firenze University Press
Year: 2015
Subjects: Linda Di Martino; Florentine crime novel author; Florence Ghetto; historical novel; noir

description: This article presents a study of the historical novel La Donna d’Oro (2003) by the Florentine writer Linda Di Martino, author of crime novels and short stories. The novel is set in the Florentine Ghetto in 1884, on the eve of its complete demolition. The plot revolves around a cold case, an investigation on an old mystery with noir undertones. It also suggests turning the clocks back to the Florence of the 19th century that has disappeared, borrowing the idea from Giulio Piccini (Jarro)’s pamphlet, Firenze sotterranea, also published in 1884.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
RadioAstron reveals a spine-sheath jet structure in 3C 273
Creators: name: Bruni, G.
name: Gómez, J. L.
name: Vega-García, L.
name: Lobanov, A. P.
name: Fuentes, A.
name: Savolainen, T.
name: Kovalev, Y. Y.
name: Perucho, M.
name: Martí, J. -M.
name: Anderson, J. M.
name: Edwards, P. G.
name: Gurvits, L. I.
name: Lisakov, M. M.
name: Pushkarev, A. B.
name: Sokolovsky, K. V.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Space-VLBI RadioAstron observations at 1.6 GHz and 4.8 GHz of the flat spectrum radio quasar 3C 273, with detections on baselines up to 4.5 and 3.3 Earth Diameters, respectively. Achieving the best angular resolution at 1.6 GHz to date, we have imaged limb-brightening in the jet, not previously detected in this source. In contrast, at 4.8 GHz, we detected emission from a central stream of plasma, with a spatial distribution complementary to the limb-brightened emission, indicating an origin in the spine of the jet. While a stratification across the jet width in the flow density, internal energy, magnetic field, or bulk flow velocity are usually invoked to explain the limb-brightening, the different jet structure detected at the two frequencies probably requires a stratification in the emitting electron energy distribution. Future dedicated numerical simulations will allow the determination of which combination of physical parameters are needed to reproduce the spine/sheath structure observed by Space-VLBI with RadioAstron in 3C 273
description: Accepted by A&A
Digital Envelope Estimation Via Geometric Properties of an Arbitrary Real Signal
Creators: name: Tarjano, Carlos
name: Pereira, Valdecy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Envelope detection techniques have applications in areas like medicine, sound classification and synthesis, seismology and speech recognition. Nevertheless, a general approach to digital envelope detection of signals with rich spectral content doesn't exist, as most methods involve manual intervention, in the form of filter design, smoothing, and other specific design choices, based on prior knowledge of the signals under investigation. To address this problem, we propose an algorithm that uses intrinsic characteristics of a signal to estimate its envelope, eliminating the necessity of parameter tuning. The approach here described draws inspiration from geometric concepts to estimate the temporal envelope of an arbitrary signal; specifically, a new measure of discrete curvature is used to obtain the average radius of curvature of a discrete wave, that will serve as a threshold to identify the waves samples that are part of the envelope. The algorithm compares favourably with classic envelope detection techniques based on smoothing, filtering and the Hilbert Transform, besides being physically plausible. We provide visualizations of the envelope extracted via the algorithm for various real-world signals, with very diverse characteristics, such as voice, spoken and sang, and pitched and non-pitched musical instruments, and discuss some approaches to assess the quality of the obtained envelopes. A Python module implementing the algorithm was made available via the Python Package Index; interactive visualizations of envelopes for a diverse range of digital waves, as well as the source code for the Python implementation, are available online.
description: More info here: https://envelope.netlify.app/
Neutrino Mass Squared Differences in the Exact Solution of a 3-3-1 Gauge Model without Exotic Electric Charges
Creators: name: Palcu, Adrian
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mass splittings for the Majorana neutrinos in the exact solution of a particular 3-3-1 gauge model are computed here in detail. Since both $\sin^{2}θ_{13}\simeq0$ and the mass splittings ratio $r_Δ\simeq0.033$ are taken into account, the analytical calculations seem to predict an inverted mass hierarchy and a mixing matrix with a texture based on a very close approximation to the bi-maximal mixing. The resulting formulas for the mass squared differences can naturally accomodate the available data if the unique free parameter ($a$) gets very small values ($\sim10^{-15}$). Consequently, the smallness of the parameter requires (according to our method) a large breaking scale $\sim10^{6}-10^{7}$ TeV in the model. Hence, the results concerning the neutrino mass splittings may lead to a more precise tuning in the exact solution of the 3-3-1 model of interest, being able - at the same time - to recover all the Standard Model phenomenology and predict the mass spectrum of the new gauge bosons $Z^{\prime},X,Y$ in accordance with the actual data. The minimal absolute mass in the neutrino sector is also obtained - $m_{0}\simeq0.0035$ eV - in the case of our suitable approximation for the bi-maxcimal mixing.
description: 10 pages, no figures
title: Comparison Between the Efficacies of TQM in Russia and Germany Under the Influence of Russian and German National Cultures
title: Vergleich der Wirksamkeit von TQM in Russland und Deutschland unter dem Einfluss der russischen und deutschen Nationalkulturen
titleType: AlternativeTitle
Creators: name: Mašlan, Natalia
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 330 Wirtschaft
subject: Total Quality Management (TQM)
subject: Efficacy of TQM
subject: Influence of German and Russian national cultures on TQM’s efficacy

description: TQM, the management method focused on quality leading to business success, is regarded to be critical in maintaining the competitive advantages of organizations in today’s rapidly globalizing world. Having started its success story first in Japan and then in the USA, TQM is now a world-renowned management system. However, it is not clear yet whether the efficacy of TQM depends on the national culture of the organization. The current study investigates the efficacy of TQM in German and Russian organizations. The findings of the study imply that the implementation of TQM in Russian manufacturing organizations, regardless of their size and branches, would increase organizational effectiveness and financial and market results of these organizations with high probability. In comparison, German manufacturing organizations would get fewer benefits from the implementation of conventional TQM than Russian organizations. Finally, the current dissertation is scientific theory-driven empirical research, providing a “blueprint” for how a cross-cultural comparison of the efficacy of TQM can be approached and answered scientifically, regardless of which countries it refers to.
Excited-state quantum phase transitions
Creators: name: Cejnar, Pavel
name: Stránský, Pavel
name: Macek, Michal
name: Kloc, Michal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review the effects of excited-state quantum phase transitions (ESQPTs) in interacting many-body systems with finite numbers of collective degrees of freedom. We classify typical ESQPT signatures in the spectra of energy eigenstates with respect to the underlying classical dynamics and outline a variety of quantum systems in which they occur. We describe thermodynamic and dynamic consequences of ESQPTs, like those in microcanonical thermodynamics, quantum quench dynamics, and in the response to nearly adiabatic or periodic driving. We hint at some generalizations of the ESQPT concept in periodic lattices and in resonant tunneling systems.
description: 78 pages, 21 figures, review article
“Il delitto si addice ad Eva”. Firenze e dintorni
Creators: name: Bacchereti, Elisabetta
Publisher: name: Firenze University Press
Year: 2015
Subjects: Florence police; Linda Di Martino; Lucia Bruni; Magdalen Nabb; Tuscan police

description: In the wide and varied scenery of detective and horror stories set in Tuscany by their Tuscan authors, women’s writing has an independent and original slot, finding its way into different anthologies of detective tales published in the last two decades. This article, in the form of a concise and general outline, without claiming exhaustiveness, focuses on three female writers of Florence crime novels: Magdalen Nabb, Linda Di Martino, and Lucia Bruni. The image of a two-faced Florence emerges from their stories: “Fiorenza bella” hides a heart of darkness.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Lucia Marcucci, maestra verbovisiva
Creators: name: Fastelli, Federico
Publisher: name: Firenze University Press
Year: 2015
Subjects: artist book; Gruppo 70; Lucia Marcucci; Neo-avant-garde; visual poetry

description: This article considers the work of visual-poetry artist and poet Lucia Marcucci. It aims to exemplify the complexity and aesthetic importance of her works. Mischievous irony, political awareness and the unending need for experimentation are but a few of the main qualities of Marcucci’s work identified here. Combined, they entitle this Tuscan artist to be considered one of the masters of her artistic and literary era.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Impact of Secondary non-Gaussianities on the Search for Primordial Non-Gaussianity with CMB Maps
Creators: name: Serra, Paolo
name: Cooray, Asantha
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: When constraining the primordial non-Gaussianity parameter f_NL with cosmic microwave background anisotropy maps, the bias resulting from the covariance between primordial non-Gaussianity and secondary non-Gaussianities to the estimator of f_NL is generally assumed to be negligible. We show that this assumption may not hold when attempting to measure the primordial non-Gaussianity out to angular scales below a few tens arcminutes with an experiment like Planck, especially if the primordial non-Gaussianity parameter is around the minimum detectability level with f_NL between 5 and 10. In future, it will be necessary to jointly estimate the combined primordial and secondary contributions to the CMB bispectrum and establish f_NL by properly accounting for the confusion from secondary non-Gaussianities.
description: 4 pages; submitted as a PRD Brief Report
Witzel, Johann-Hinrich: Das Verhältnis von ordiniertem Amt und Gemeinde in der Lima-Erklärung zum Amt
Creators: name: Vo.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 1 (1986): Ökumenische Rundschau, Band 35, Heft 1
Il giallo svedese: un vezzo d’artista o la ricerca della verità?
Creators: name: Bignami, Marialuisa
Publisher: name: Firenze University Press
Year: 2015
Subjects: detection; epistemology; genre literature; knowledge; narration

description: This articles argues that Björn Larsson’s novels, although certainly not detective stories, nevertheless show an influence of the procedures of detection in the way they pursue a search for truth, i.e. that they are epistemologically oriented in the fact what governs the advancement of the plot is the same as what governs the advancement of learning and the development of characters follows suit. The latter do not stand on their own, but are organically constructed according to a plan which includes the values in which the author believes and in which he also wishes his reader to believe. Beliefs, therefore, are basically more important to him than stories.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Off-Shell ADT Conserved Quantities in Palatini Gravity
Creators: name: Ding, Hai-Feng
name: Zhai, Xiang-Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we generalize the off-shell Abbott-Deser-Tekin (ADT) conserved charge formalism to Palatini theory of gravity with torsion and non-metricity. Our construction is based on the coordinate formalism and the independent dynamic fields are the metric and the affine connection. For a general Palatini theory of gravity, which is diffeomorphism invariant up to a boundary term, we obtain the most general expression for off-shell ADT potential. As explicit examples, we derive the off-shell ADT potentials for Einstein-Hilbert action, the most general $L(g_{μν}, R^λ{}_{ναμ}, T^λ{}_{αβ}, Q_{αμν})$ theories and the teleparallel Palatini gravity.
description: 20 pages, version to be published in Class. Quantum Grav
Ramón J. Sender tra verità e finzione, con epilogo cinematografico
Creators: name: Fiore, Arianna
Publisher: name: Firenze University Press
Year: 2015
Subjects: Casas Viejas; literary avant-garde; Ramón J. Sender, social literature; the Thirties

description: The Spanish cultural renaissance of the first three decades of the 20th century was interrupted in 1936, when intellectuals abandoned their aesthetic ambitions to describe war. However, some writers were immune to the aesthetic charm of the period. Ramón J. Sender in the 20s used a testimonial style in his journalistic collaborations and in the 30s approached reality for militant purposes, thus anticipating the hybridization of reality and fiction. He narrated the Casas Viejas anarchist revolt in his news reports (1933) and in two narrative reworks, Casas viejas (1933) and Viaje a la aldea del crimen (1934). Fifty years later, the meeting of fiction and reality and the hybridity of genres will also characterize the narrative approach adopted by cinema in narrating the same facts.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Gravitational wave peak luminosity model for precessing binary black holes
Creators: name: Taylor, Afura
name: Varma, Vijay
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When two black holes merge, a tremendous amount of energy is released in the form of gravitational radiation in a short span of time, making such events among the most luminous phenomenon in the universe. Models that predict the peak luminosity of black hole mergers are of interest to the gravitational wave community, with potential applications in tests of general relativity. We present a surrogate model for the peak luminosity that is directly trained on numerical relativity simulations of precessing binary black holes. Using Gaussian process regression, we interpolate the peak luminosity in the 7-dimensional parameter space of precessing binaries with mass ratios $q\leq4$, and spin magnitudes $χ_1,χ_2\leq0.8$. We demonstrate that our errors in estimating the peak luminosity are lower than those of existing fitting formulae by about an order of magnitude. In addition, we construct a model for the peak luminosity of aligned-spin binaries with mass ratios $q\leq8$, and spin magnitudes $|χ_{1z}|,|χ_{2z}|\leq0.8$. We apply our precessing model to infer the peak luminosity of the GW event GW190521, and find the results to be consistent with previous predictions.
description: 5 pages, 4 figures; matches PRD version
Diffusion and adoption of hybrid rice in Bangladesh
Creators: name: Shah, Md. Mofakhrul Islam
Publisher: name: The Australian National University
Year: 2015

description: A devastating flood in the 1998-1999 cropping season created a rice seed shortage in Bangladesh, which became a challenge for sustaining growth in rice production. In order to address this issue, hybrid rice was introduced in the 1999 boro season as one of the potential options. Its acceptance by farmers was, however, a disappointment because of the emergence of manifold problems. Understanding the "Diffusion and adoption of hybrid rice in Bangladesh" over the last decade is, therefore, critical to successful promotion. To achieve this, the present study was conducted within the framework of the "Diffusion of Innovations" paradigm focusing on the decision stage. The main objectives of the study were to assess the extent of adoption of hybrid rice; to establish its diffusion pattern; to assess the growers' satisfaction on consuming hybrid rice; and understand reasons for non-adoption, de-adoption and continuing adoption. A concurrent embedded design using a cross sectional survey was employed to carry out the study. The study was conducted in five regions of Bangladesh. The sample population consisted of rice growers of the boro season who were responsible for farming decisions. A multistage stratified random sampling design was employed in selecting the sample of 440 farmers. Three categories, namely, non-adopters, de-adopters and continuing adopters of hybrid rice were sampled. Data were collected through face-to-face interviews of the sampled farmers using a pre-tested and back translated questionnaire comprising a series of 21 questions. The questionnaire was formatted with both open ended and closed question items for securing quantitative and qualitative data. The data confirmed that the overall extent of adoption of hybrid rice during the period of the 2001- 2011 boro seasons was moderate in the sample areas. Comparing the selected technological aspects of hybrid rice with inbred varieties, it was found that although hybrid rice cultivation secures higher yield and profitability, it has a range of disadvantages. Logistic regression results showed that several factors affected farmers' decisions to adopt hybrid rice, including farmers' demographic and attitudinal characteristics. Their stated reasons for non-adoption, de-adoption and continuing adoption are compared in this thesis with those hypothesized from the literature for de-adoption. These reasons include unsuitability for consumption, lower market prices, severe infestations of insect pests and lack of irrigation facilities. These factors will need to be addressed if hybrid rice is to attain greater adoption levels in Bangladesh. There is an enormous potential for improving the level of adoption of hybrid rice in Bangladesh. In order to achieve this, the scientific community, planners and extension workers both at national and international level would need to initiate further research and revise existing policy guidelines in light of the findings of this study.
Nausea al museo: il Salon Bordurin-Renaudas nella Nausée di Sartre
Creators: name: Landi, Michela
Publisher: name: Firenze University Press
Year: 2015

description: The increasing interest in Sartre’s art criticism has not yet led to the demolition of the barriers between philosophy, art and literature: Sartre’s writings on art are still considered an aspect of his own general philosophy of imagery. This study aims to focus on the relations between Sartre’s ideas and Lacan’s and Benjamin’s theories on art and to explore, with the tools of stylistics and  literary criticism, some narrative aspects of this line of thought in Sartre’s La Nausée.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
The First 6 Months of Open Science
Creators: name: Argabright, Lynnee Marie
name: Kittinger, Allison Michelle
Publisher: name: Zenodo
Year: 2022

description: Open Science is increasingly important to libraries and universities in the digital age, but standards and essential competencies are constantly evolving, and educational offerings on the topic are not always current. The library of a newly designated R2 university set up a department, comprised of a new data librarian and a new scholarly communications librarian, as a direct answer to faculty desires and growing research support needs. When surveyed in 2019, faculty expressed interest and lack of awareness in nearly all areas of the data lifecycle, especially open data and data sharing, and crosscampus infrastructure projects such as DMPTool and Dataverse were stalled. Similarly, increased open access and repository services related to self-archiving, APC funding, and open journal selection were in high demand but had no single point person able to take on all of these responsibilities in addition to their own. This poster will map out what was expected of these new librarian roles, what roadblocks were faced, how outreach has been conducted, what faculty are asking about the most, and new strategies to set up a sustainable Open Science campus. It has lessons on tailoring your Open Science program to your institutional context and the continuing areas of expertise required of librarians working in Open Science. By breaking down projects and initiatives these librarians worked on during their first months, it also provides an example of how much new librarians can accomplish!
Components of Eleven-dimensional Supergravity with Four Off-shell Supersymmetries
Creators: name: Becker, Katrin
name: Butter, Daniel
name: Linch, William D.
name: Sengupta, Anindya
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive the component structure of 11D, $N=1/8$ supergravity linearized around eleven-dimensional Minkowski space. This theory represents 4 local supersymmetries closing onto 4 of the 11 spacetime translations without the use of equations of motion. It may be interpreted as adding $201$ auxiliary bosons and $56$ auxiliary fermions to the physical supergravity multiplet for a total of $376+376$ components. These components and their transformations are organized into representations of $SL(2;\mathbf C)\times G_2$.
description: v3: References added, modified footnote. Published version
Spin-wave interactions in quantum antiferromagnets
Creators: name: Hasselmann, Nils
name: Kopietz, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study spin-wave interactions in quantum antiferromagnets by expressing the usual magnon annihilation and creation operators in terms of Hermitian field operators representing transverse staggered and ferromagnetic spin fluctuations. In this parameterization, which was anticipated by Anderson in 1952, the two-body interaction vertex between staggered spin fluctuations vanishes at long wavelengths. We derive a new effective action for the staggered fluctuations only by tracing out the ferromagnetic fluctuations. To one loop order, the renormalization group flow agrees with the nonlinear-$σ$-model approach.
description: 7 pages, no figures; new references added; extended discussion on vertex structure. To appear in Europhysics Letters
Strangeness-changing Rates and Hyperonic Bulk Viscosity in Neutron Star Mergers
Creators: name: Alford, Mark G.
name: Haber, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we present a computation of the rates of strangeness-changing processes and the resultant bulk viscosity in matter at the densities and temperatures typical of neutron star mergers. To deal with the high temperature in this environment we go beyond the Fermi surface approximation in our rate calculations and numerically evaluate the full phase space integral. We include processes where quarks move between baryons via meson exchange: these have generally been omitted in previous analyses but provide the dominant contribution to the rates of strangeness-changing processes and the bulk viscosity. The calculation of these rates is an essential step towards any calculation of dissipation mechanisms in hyperonic matter in mergers. As one application, we calculate the dissipation times for density oscillations at the frequencies seen in merger simulations. We find that hyperon bulk viscosity for temperatures in the MeV regime can probably be neglected in this context, but becomes highly relevant for keV-range temperatures.
description: 17 pages, 11 figures v2: corrected computation of susceptibilities, resonant temperature for maximum bulk viscosity shifted to much lower temperatures
การลดค่าความไม่แน่นอนจากการวัด เพื่อปรับปรุงประสิทธิภาพในการใช้โอห์มมิเตอร์
Creators: name: วิเชษฐ  ยิ้มละมัย
name: มัตติกา  บุญมา
name: ศิวัช  ลาวัลย์วดีกุล
name: กิตติศักดิ์ สมุทธารักษ์
name: จักรกฤษณ์  ฮั่นยะลา
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Uncertainty measurement, Ohmmeter, Resistance, Calibration

description: 2, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง