cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Frame invariant neural network closures for Kraichnan turbulence
Creators: name: Pawar, Suraj
name: San, Omer
name: Rasheed, Adil
name: Vedula, Prakash
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Numerical simulations of geophysical and atmospheric flows have to rely on parameterizations of subgrid scale processes due to their limited spatial resolution. Despite substantial progress in developing parameterization (or closure) models for subgrid scale (SGS) processes using physical insights and mathematical approximations, they remain imperfect and can lead to inaccurate predictions. In recent years, machine learning has been successful in extracting complex patterns from high-resolution spatio-temporal data, leading to improved parameterization models, and ultimately better coarse grid prediction. However, the inability to satisfy known physics and poor generalization hinders the application of these models for real-world problems. In this work, we propose a frame invariant closure approach to improve the accuracy and generalizability of deep learning-based subgrid scale closure models by embedding physical symmetries directly into the structure of the neural network. Specifically, we utilized specialized layers within the convolutional neural network in such a way that desired constraints are theoretically guaranteed without the need for any regularization terms. We demonstrate our framework for a two-dimensional decaying turbulence test case mostly characterized by the forward enstrophy cascade. We show that our frame invariant SGS model (i) accurately predicts the subgrid scale source term, (ii) respects the physical symmetries such as translation, Galilean, and rotation invariance, and (iii) is numerically stable when implemented in coarse-grid simulation with generalization to different initial conditions and Reynolds number. This work builds a bridge between extensive physics-based theories and data-driven modeling paradigms, and thus represents a promising step towards the development of physically consistent data-driven turbulence closure models.
A note on property (gb) and perturbations
Creators: name: Zeng, Qingping
name: Zhong, Huaijie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A10, 47A11 (Primary) 47A53, 47A55 (Secondary)

description: An operator $T \in \mathcal{B}(X)$ defined on a Banach space $X$ satisfies property $(gb)$ if the complement in the approximate point spectrum $σ_{a}(T)$ of the upper semi-B-Weyl spectrum $σ_{SBF_{+}^{-}}(T)$ coincides with the set $Π(T)$ of all poles of the resolvent of $T$. In this note we continue to study property $(gb)$ and the stability of it, for a bounded linear operator $T$ acting on a Banach space, under perturbations by nilpotent operators, by finite rank operators, by quasi-nilpotent operators commuting with $T$. Two counterexamples show that property $(gb)$ in general is not preserved under commuting quasi-nilpotent perturbations or commuting finite rank perturbations.
description: 10 pages
Nonlinear optical response in gapped graphene
Creators: name: Jafari, S. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a formulation for the nonlinear optical response in gapped graphene, where the low-energy single-particle spectrum is modeled by massive Dirac theory. As a representative example of the formulation presented here, we obtain closed form formula for the third harmonic generation (THG) in gapped graphene. It turns out that the covariant form of the low-energy theory gives rise to a peculiar logarithmic singularities in the nonlinear optical spectra. The universal functional dependence of the response function on dimension-less quantities indicates that the optical nonlinearity can be largely enhanced by tuning the gap to smaller values.
description: http://iopscience.iop.org/0953-8984/labtalk-article/49384
Close companions to Brightest Cluster Galaxies: Support for minor mergers and downsizing
Creators: name: Edwards, Louise O. V.
name: Patton, David R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We identify close companions of Brightest Cluster Galaxies (BCGs) for the purpose of quantifying the rate at which these galaxies grow via mergers. By exploiting deep photometric data from the CFHTLS, we probe the number of companions per BCG (Nc) with luminosity ratios down to those corresponding to potential minor mergers of 20:1. We also measure the average luminosity in companions per galaxy (Lc). We find that Nc and Lc rise steeply with luminosity ratio for both the BCGs, and a control sample of other bright, red, cluster galaxies. The trend for BCGs rises more steeply, resulting in a larger number of close companions. For companions within 50kpc of a BCG, Nc= 1.38+/-0.14 and Lc=(2.14+/-0.31)x10^(10)L_sun and for companions within 50kpc of a luminosity matched control sample of non-BCGs, Nc=0.87+/-0.08 and Lc=(1.48+/-0.20)x10^(10)L_sun. This suggests that the BCGs are likely to undergo more mergers compared to otherwise comparable luminous galaxies. Additionally, compared to a local sample of luminous red galaxies, the more distant sample presented in this study (with redshifts between 0.15-0.39,) shows a higher Nc, suggesting the younger and smaller BCGs are still undergoing hierarchical formation. Using the Millennium Simulations we model and estimate the level of contamination due to unrelated cluster galaxies. The contamination by interloping galaxies is 50% within projected separations of 50kpc, but within 30kpc, 60% of identified companions are real physical companions. We conclude that the luminosity of bound merger candidates down to luminosity ratios of 20:1 could be adding as much as 10% to the mass of a typical BCG over 0.5Gyr at redshifts of z~0.3.
description: 10 pages, 7 figures. Accepted and to be published in MNRAS
The Interaction of Cosmic Rays with Diffuse Clouds
Creators: name: Everett, John E.
name: Zweibel, Ellen G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the change in cosmic-ray pressure, the change in cosmic-ray density, and the level of cosmic-ray induced heating via Alfven-wave damping when cosmic rays move from a hot ionized plasma to a cool cloud embedded in that plasma. The general analysis method outlined here can apply to diffuse clouds in either the ionized interstellar medium or in galactic winds. We introduce a general-purpose model of cosmic-ray diffusion building upon the hydrodynamic approximation for cosmic rays (from McKenzie & Voelk and Breitschwerdt and collaborators). Our improved method self-consistently derives the cosmic-ray flux and diffusivity under the assumption that the streaming instability is the dominant mechanism for setting the cosmic-ray flux and diffusion. We find that, as expected, cosmic rays do not couple to gas within cool clouds (cosmic rays exert no forces inside of cool clouds), that the cosmic-ray density does not increase within clouds (it may slightly decrease in general, and decrease by an order of magnitude in some cases), and that cosmic-ray heating (via Alfven-wave damping and not collisional effects as for ~10 MeV cosmic rays) is only important under the conditions of relatively strong (10 micro-Gauss) magnetic fields or high cosmic-ray pressure (~10^{-11} ergs cm^{-3}).
description: 15 pages, 9 figures, 1 table; Accepted to ApJ
Kurzmann-Penz, I. (2018): Zur literarischen Fiktion von Kindheit, Überlegungen zu den apokryphen Kindheitsevangelien Jesu im Rahmen der antiken Biographie
Creators: name: Mause, Michael
Publisher: name: Forum Classicum
Year: 2020

description: Rezension zu: Kurzmann-Penz, I. (2018): Zur literarischen Fiktion von Kindheit, Überlegungen zu den apokryphen Kindheitsevangelien Jesu im Rahmen der antiken Biographie, Stuttgart (Franz Steiner Verlag) [Potsdamer Altertumswissenschaftliche Beiträge, Band 66], 232 Seiten (ISBN 978-3-515-12152-1)
description: Forum Classicum, Nr. 1 (2020): Forum Classicum
Discussion of "Feature Matching in Time Series Modeling" by Y. Xia and H. Tong
Creators: name: Hansen, Bruce E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Discussion of "Feature Matching in Time Series Modeling" by Y. Xia and H. Tong [arXiv:1104.3073]
description: Published in at http://dx.doi.org/10.1214/11-STS345A the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Personal Mobility With Synchronous Trunk-Knee Passive Exoskeleton: Optimizing Human-Robot Energy Transfer
Creators: name: Paez-Granados, Diego
name: Kadone, Hideki
name: Hassan, Modar
name: Chen, Yang
name: Suzuki, Kenji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: Applied Physics (physics.app-ph)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: We present a personal mobility device for lower-body impaired users through a light-weighted exoskeleton on wheels. On its core, a novel passive exoskeleton provides postural transition leveraging natural body postures with support to the trunk on sit-to-stand and stand-to-sit (STS) transitions by a single gas spring as an energy storage unit. We propose a direction-dependent coupling of knees and hip joints through a double-pulley wire system, transferring energy from the torso motion towards balancing the moment load at the knee joint actuator. Herewith, the exoskeleton maximizes energy transfer and the naturalness of the user's movement. We introduce an embodied user interface for hands-free navigation through a torso pressure sensing with minimal trunk rotations, resulting on average $19^{\circ} \pm 13^{\circ}$ on six unimpaired users. We evaluated the design for STS assistance on 11 unimpaired users observing motions and muscle activity during the transitions. Results comparing assisted and unassisted STS transitions validated a significant reduction (up to $68\%$ $p<0.01$) at the involved muscle groups. Moreover, we showed it feasible through natural torso leaning movements of $+12^{\circ}\pm 6.5^{\circ}$ and $- 13.7^{\circ} \pm 6.1^{\circ}$ for standing and sitting, respectively. Passive postural transition assistance warrants further work on increasing its applicability and broadening the user population.
description: IEEE/ASME Transactions on Mechatronics. 2022. 11 pages. doi: 10.1109/TMECH.2021.3135453
A characterization of abelian group codes in terms of their parameters
Creators: name: Aksu, Fatma Altunbulak
name: Tuvay, İpek
Publisher: name: arXiv
Year: 2022
Subjects: subject: Group Theory (math.GR)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 20K01, 94B05, 16S34

description: In 1979, Miller proved that for a group $G$ of odd order, two minimal group codes in $\mathbb{F}_2G$ are $G$-equivalent if and only they have identical weight distribution. In 2014, Ferraz-Guerreiro-Polcino Milies disprove Miller's result by giving an example of two non-$G$-equivalent minimal codes with identical weight distribution. In this paper, we give a characterization of finite abelian groups so that over a specific set of group codes, equality of important parameters of two codes implies the $G$-equivalence of these two codes. As a corollary, we prove that two minimal codes with the same weight distribution are $G$-equivalent if and only if for each prime divisor $p$ of $|G|$, the Sylow $p$-subgroup of $G$ is homocyclic.
description: 10 pages
Pairing symmetries of several families of iron-based superconductors and some similarities with cuprates and heavy-fermions
Creators: name: Das, Tanmoy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that, by using unit-cell transformation between 1 Fe per unit cell to 2 Fe per unit cell, one can qualitatively understand the pairing symmetry of several families of iron-based superconductors. In iron-pnictides and iron-chalcogenides, the nodeless s+- pairing and the resulting magnetic resonance mode transform nicely between the two unit cells, while retaining all physical properties unchanged. However, when the electron-pocket disappears from the Fermi surface with complete doping in KFe2As2, we find that the unit-cell invariant requirement prohibits the occurrence of s+- pairing symmetry (caused by inter-hole-pocket nesting). However, the intra-pocket nesting is compatible here, which leads to a nodal d-wave pairing. The corresponding Fermi surface topology and the pairing symmetry are similar to Ce-based heavy-fermion superconductors. Furthermore, when the Fermi surface hosts only electron-pockets in KyFe2-xSe2, the inter-electron-pocket nesting induces a nodeless and isotropic d-wave pairing. This situation is analogous to the electron-doped cuprates, where the strong antiferromagnetic order creates similar disconnected electron-pocket Fermi surface, and hence nodeless d-wave pairing appears. The unit-cell transformation in KyFe2-xSe2 exhibits that the d-wave pairing breaks the translational symmetry of the 2 Fe unit cell, and thus cannot be realized unless a vacancy ordering forms to compensate for it. These results are consistent with the coexistence picture of a competing order and nodeless d-wave superconductivity in both cuprates and KyFe1.6Se2.
description: 6 pages, 3 figures. Conference paper, presented in Eurasia Pacific Summer School and Conference on Strongly Correlated Electrons in Turkey, 2011
Gezahnte Knochenwerkzeuge aus Mitteldeutschland
Creators: name: Lehmann, Ernst
Publisher: name: Jahresschrift für mitteldeutsche Vorgeschichte
Year: 2020

description: Jahresschrift für mitteldeutsche Vorgeschichte, Bd. 19 (1931): Jahresschrift für die Vorgeschichte der sächsisch-thüringischen Länder
On the Nature and Genesis of EUV Waves: A Synthesis of Observations from SOHO, STEREO, SDO, and Hinode
Creators: name: Patsourakos, Spiros
name: Vourlidas, Angelos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A major, albeit serendipitous, discovery of the SOlar and Heliospheric Observatory mission was the observation by the Extreme Ultraviolet Telescope (EIT) of large-scale Extreme Ultraviolet (EUV) intensity fronts propagating over a significant fraction of the Sun's surface. These so-called EIT or EUV waves are associated with eruptive phenomena and have been studied intensely. However, their wave nature has been challenged by non-wave (or pseudo-wave) interpretations and the subject remains under debate. A string of recent solar missions has provided a wealth of detailed EUV observations of these waves bringing us closer to resolving their nature. With this review, we gather the current state-of-art knowledge in the field and synthesize it into a picture of an EUV wave driven by the lateral expansion of the CME. This picture can account for both wave and pseudo-wave interpretations of the observations, thus resolving the controversy over the nature of EUV waves to a large degree but not completely. We close with a discussion of several remaining open questions in the field of EUV waves research.
description: Solar Physics, Special Issue "The Sun in 360",2012, accepted for publication
Comparing weak lensing peak counts in baryonic correction models to hydrodynamical simulations
Creators: name: Lee, Max E.
name: Lu, Tianhuan
name: Haiman, Zoltán
name: Liu, Jia
name: Osato, Ken
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Next-generation weak lensing (WL) surveys, such as by the Vera Rubin Observatory's LSST, the $\textit{Roman}$ Space Telescope, and the $\textit{Euclid}$ space mission, will supply vast amounts of data probing small, highly nonlinear scales. Extracting information from these scales requires higher-order statistics and the controlling of related systematics such as baryonic effects. To account for baryonic effects in cosmological analyses at reduced computational cost, semi-analytic baryonic correction models (BCMs) have been proposed. Here, we study the accuracy of BCMs for WL peak counts, a well studied, simple, and effective higher-order statistic. We compare WL peak counts generated from the full hydrodynamical simulation IllustrisTNG and a baryon-corrected version of the corresponding dark matter-only simulation IllustrisTNG-Dark. We apply galaxy shape noise expected at the depths reached by DES, KiDS, HSC, LSST, $\textit{Roman}$, and $\textit{Euclid}$. We find that peak counts in BCMs are (i) accurate at the percent level for peaks with $\mathrm{S/N}<4$, (ii) statistically indistinguishable from IllustrisTNG in most current and ongoing surveys, but (iii) insufficient for deep future surveys covering the largest solid angles, such as LSST and $\textit{Euclid}$. We find that BCMs match individual peaks accurately, but underpredict the amplitude of the highest peaks. We conclude that existing BCMs are a viable substitute for full hydrodynamical simulations in cosmological parameter estimation from beyond-Gaussian statistics for ongoing and future surveys with modest solid angles. For the largest surveys, BCMs need to be refined to provide a more accurate match, especially to the highest peaks.
description: 12 pages, 10 figures
Moduli stabilization with bulk scalar in nested doubly warped braneworld model
Creators: name: Bhaumik, Arko
name: SenGupta, Soumitra
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the modulus stabilization mechanism of a warped geometry model with nested warping. Such a model with multiple moduli is known to offer a possible resolution of the fermion mass hierarchy problem in the standard model. A six dimensional doubly warped braneworld model under consideration admits two distinct moduli, with the associated warp factors dynamically generating different physical mass scales on four 3-branes. In order to address the hierarchy problem related to the Higgs mass, both moduli need to be stabilized around their desired values without any extreme fine tuning of parameters. We show that it is possible to stabilize them simultaneously due to the appearence of an effective 4D moduli potential, which is generated by a single bulk scalar field having non-zero VEVs frozen on the 3-branes. We also discuss how the entire mechanism can possibly be understood from a purely gravitational point of view, with higher curvature f(R) contributions in the bulk automatically providing a scalar degree of freedom that can serve as the stabilizing field in the Einstein frame.
description: 19 Pages, 1 Figure
Grabfunde der Lausitzischen Kultur von Piesteritz, Kr. Wittenberg
Creators: name: Hülle, Werner
Publisher: name: Jahresschrift für mitteldeutsche Vorgeschichte
Year: 2020

description: Jahresschrift für mitteldeutsche Vorgeschichte, Bd. 20 (1932): Jahresschrift für die Vorgeschichte der sächsisch-thüringischen Länder
Hawking radiation from dynamical horizons
Creators: name: Chatterjee, Ayan
name: Chatterjee, Bhramar
name: Ghosh, Amit
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In completely local settings, we establish that a dynamically evolving black hole horizon can be assigned a Hawking temperature. Moreover, we calculate the Hawking flux and show that the radius of the horizon shrinks.
description: 5 Pages
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 3 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Cosmological perturbations: non-cold relics without the Boltzmann hierarchy
Creators: name: Ji, Lingyuan
name: Kamionkowski, Marc
name: Bernal, Jose Luis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a formulation of cosmological perturbation theory where the Boltzmann hierarchies that evolve the neutrino phase-space distributions are replaced by integrals that can be evaluated easily with fast Fourier transforms. The simultaneous evaluation of these integrals combined with the differential equations for the rest of the system (dark matter, photons, baryons) are then solved with an iterative scheme that converges quickly. The formulation is particularly powerful for massive neutrinos, where the effective phase space is three-dimensional rather than two-dimensional, and even moreso for three different neutrino mass eigenstates. Therefore, it has the potential to significantly speed up the computation times of cosmological-perturbation calculations. This approach should also be applicable to models with other non-cold collisionless relics.
description: 5 pages, 3 figures
Alfred Stange, Kritisches Verzeichnis der deutschen Tafelbilder vor Dürer, 1. Band: Köln, Niederrhein, Westfalen, Hamburg, Lübeck und Niedersachsen
Creators: name: Strieder, Peter
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Alfred Stange, Kritisches Verzeichnis der deutschen Tafelbilder vor Dürer, 1. Band: Köln, Niederrhein, Westfalen, Hamburg, Lübeck und Niedersachsen. München (Bruckmann) 1967. 267 S.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 3 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Crossover critical behavior of Ga1-xMnxAs
Creators: name: Yuldashev, Sh. U.
name: Igamberdiev, Kh. T.
name: Kwon, Y. H.
name: Lee, Sanghoon
name: Liu, X.
name: Furdyna, J. K.
name: Shashkov, A. G.
name: Kang, T. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The critical behavior of Ga1-xMnxAs in a close vicinity of the Curie temperature was experimentally studied by using the thermal diffusivity measurements. Taking into account that the inverse of the thermal diffusivity has the same critical behavior as the specific heat, the critical exponent α for the samples investigated has been determined. With approaching close to the critical temperature, the crossover from the mean-field-like to the Ising-like critical behavior has been observed. From the crossover behavior the values of the Ginzburg number and the exchange interaction length in Ga1-xMnxAs with different concentrations of Mn were determined.
description: 17 pages, 5 figures
Block-encoding dense and full-rank kernels using hierarchical matrices: applications in quantum numerical linear algebra
Creators: name: Nguyen, Quynh T.
name: Kiani, Bobak T.
name: Lloyd, Seth
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Many quantum algorithms for numerical linear algebra assume black-box access to a block-encoding of the matrix of interest, which is a strong assumption when the matrix is not sparse. Kernel matrices, which arise from discretizing a kernel function $k(x,x')$, have a variety of applications in mathematics and engineering. They are generally dense and full-rank. Classically, the celebrated fast multipole method performs matrix multiplication on kernel matrices of dimension $N$ in time almost linear in $N$ by using the linear algebraic framework of hierarchical matrices. In light of this success, we propose a block-encoding scheme of the hierarchical matrix structure on a quantum computer. When applied to many physical kernel matrices, our method can improve the runtime of solving quantum linear systems of dimension $N$ to $O(κ\operatorname{polylog}(\frac{N}{\varepsilon}))$, where $κ$ and $\varepsilon$ are the condition number and error bound of the matrix operation. This runtime is near-optimal and, in terms of $N$, exponentially improves over prior quantum linear systems algorithms in the case of dense and full-rank kernel matrices. We discuss possible applications of our methodology in solving integral equations and accelerating computations in N-body problems.
description: Added affiliations and acknowledgments
The Early Response to the Coronavirus: Surveys in Southern Texas
Creators: name: Monahan, Laura
name: Zhao, Meng
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: The objective of this study was to investigate if Southern Texas communities were prepared in their awareness and knowledge of the coronavirus disease 2019 (COVID-19) in timed snapshots as the pandemic unfolded. Two assessment surveys were implemented utilizing the Coronavirus Awareness and Preparedness Scale (CAPS) in March and April 2020, respectively. A convenience sample of university faculty in Southern Texas was used. Responses to survey questions changed significantly in the one-month timeframe. Respondents' perception of the COVID-19 threat increased dramatically from March to April, while their perceived preparedness facing the COVID-19 also increased tremendously. The recognized benefits of mask-wearing were limited in both March and April. Males and older people aged 55 and above had significantly lower awareness of the COVID-19 in March (p< 0.05) and may need more attention at the early phases of a pandemic. The increased availability of COVID-19 information through public health agencies led to the increased awareness of COVID-19. When facing a pandemic, both healthcare education and health care policy approaches are essential in addressing the containment and the eradication of COVID-19.
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 7 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The Galactic R Coronae Borealis stars : the C2 Swan bands, the carbon problem, and the 12C/13C ratio
Creators: name: Hema, B. P.
name: Pandey, Gajendra
name: Lambert, David L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observed spectra of R Coronae Borealis (RCB) and hydrogen-deficient carbon (HdC) stars are analyzed by synthesizing the C2 Swan bands (1,0), (0,0), and (0,1) using our detailed line list and the Uppsala model atmospheres. The (0,1) and (0,0) C2 bands are used to derive the 12C abundance, and the (1,0) 12C13C band to determine the 12C/13C ratios. The carbon abundance derived from the C2 Swan bands is about the same for the adopted models constructed with different carbon abundances over the range: 8.5 (C/He = 0.1%), to 10.5 (C/He = 10%). Carbon abundances derived from C I lines are about a factor of 4 lower than the carbon abundance of the adopted model atmosphere over the same C/He interval, as reported by Asplund et al. (2000), who dubbed the mismatch between adopted and derived C abundance the 'carbon problem'. In principle, the carbon abundances obtained from C2 Swan bands and that assumed for the model atmosphere can be equated for a particular choice of C/He that varies from star to star. Then, the carbon problem for C2 bands is eliminated. However, such C/He ratios are in general less than those of the EHe stars, the seemingly natural relatives to the RCB and HdC stars. A more likely solution to the C2 carbon problem may lie in a modification of the model atmosphere's temperature structure. The derived carbon abundances and the 12C/13C ratios are discussed in light of the double degenerate (DD) and the final flash (FF) scenarios.
description: Accepted for Publication in ApJ
Heinz Roosen-Runge, Farbgebung und Technik frühmittelalterlicher Buchmalerei, Studien zu den Traktaten "Mappae Clavicula" und "Heraclius"
Creators: name: Kühn, Hermann
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Heinz Roosen-Runge, Farbgebung und Technik frühmittelalterlicher Buchmalerei, Studien zu den Traktaten "Mappae Clavicula" und "Heraclius". 2 Bände: 1. Band 205 Textseiten, 40 Abbildungen, davon 15 in Farbe; 2. Band (Katalog) 126 Textseiten, 382 Mikroaufnahmen in Farbe. Deutscher Kunstverlag 1967.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 7 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The astrometric recognition of the solar Clementine gnomon (1702)
Creators: name: Sigismondi, Costantino
Publisher: name: arXiv
Year: 2012
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Clementine gnomon has been built in 1702 to measure the Earth's obliquity variation. For this reason the pinhole was located in the walls of Diocletian's times (305 a. D.) in order to remain stable along the centuries, but its original form and position have been modified. We used an astrometric method to recover the original position of the pinhole: reshaping the pinhole to a circle of 1.5 cm of diameter, the positions of the Northern and Southern limbs have been compared with the ephemerides. A sistematic shift of 4.5 mm Southward of the whole solar image shows that the original pinhole was 4.5 mm North of the actual position, as the images in the Bianchini's book (1703) suggest. The oval shape of the actual pinhole is also wrong. Using a circle the larger solar spots are clearly visible. Some reference stars of the catalogue of Philippe de la Hire (1702), used originally for measuring the ecliptic latitude of the Sun, are written next to the meridian line, but after the last restauration (2000), four of them are wrongly located. Finally the deviation from the true North, of the meridian line's azimuth confirms the value recovered in 1750. This, with the local deviations of a true line, will remain as systematic error, like for all these historical instruments.
description: 5 pages, 2 figures. Proceedings of the Third Galileo - Xu Guangqi meeting, October 11-15, 2011 National Astronomical Observatories - Beijing (China) The Sun, the Stars, the Universe, and General Relativity
High-field transport and hot electron noise in GaAs from first principles: role of two-phonon scattering
Creators: name: Cheng, Peishi S.
name: Sun, Jiace
name: Sun, Shi-Ning
name: Choi, Alexander Y.
name: Minnich, Austin J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: High-field charge transport in semiconductors is of fundamental interest and practical importance. While the \textit{ab initio} treatment of low-field transport is well-developed, the treatment of high-field transport is much less so, particularly for multi-phonon processes that are reported to be relevant in GaAs. Here, we report a calculation of the high-field transport properties and current power spectral density (PSD) of hot electrons in GaAs from first principles including on-shell two-phonon (2ph) scattering. The on-shell 2ph scattering rates are found to qualitatively alter the high-field distribution function by increasing both the momentum and energy relaxation rates as well as contributing markedly to intervalley scattering. This finding reconciles a long-standing discrepancy regarding the strength of intervalley scattering in GaAs as inferred from transport and optical studies. The characteristic non-monotonic trend of PSD with electric field is not predicted at this level of theory. Our work shows how \textit{ab initio} calculations of high-field transport and noise may be used as a stringent test of the electron-phonon interaction in semiconductors.
description: 34 pages, 6 figures, submitted to Physical Review B
Robert Rosenblum, Transformations in Late Eighteenth Century Art
Creators: name: Mittig, Hans-Ernst
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Robert Rosenblum, Transformations in Late Eighteenth Century Art. Princeton, N. J. (Princeton University Press) 1967. 203 S., 215 Abb. auf Tafeln.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 7 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Phase Diagram of the Kane-Mele-Hubbard model
Creators: name: Griset, Christian
name: Xu, Cenke
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent numerical results, we study the phase diagram of the Kane-Mele-Hubbard (KHM) model, especially the nature of its quantum critical points. The phase diagram of the Kane-Mele-Hubbard model can be understood by breaking the SO(4) symmetry of our previous work down to U(1)_spin x U(1)_charge x PH symmetry. The vortices of the inplane Neel phase carry charge, and the proliferation of the charged magnetic vortex drives the transition between the inplane Neel phase and the QSH insulator phase; this transition belongs to the 3d XY universality class. The transition between the liquid phase and the inplane Neel phase is an anisotropic O(4) transition, which eventually becomes first order due to quantum fluctuation. The liquid-QSH transition is predicted to be first order based on a 1/N calculation.
description: 5 pages, 2 figures
The American College of Sports Medicine (ACSM) Leadership and Diversity Training Program (LDTP): Harnessing Mentorship to Diversify Organizational Leadership
Creators: name: Bustamante, Eduardo
name: Sawyer, Chris
name: Brown, Michael
name: Suman, Oscar
name: Keith, NiCole
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: In the 21st century, exercise-related fields face the daunting challenge of addressing inactivity and chronic disease epidemics driven by vast sociodemographic disparities related to gender, race/ethnicity, socioeconomic status, and disability status. The underrepresentation of scientists and practitioners from communities with the lowest physical activity and highest chronic disease rates makes responding more difficult and diversifying the field to focus on relevant perspectives a priority. For over a decade, the American College of Sports Medicine (ACSM), the world’s largest physical activity-focused professional organization, has engaged in a variety of efforts to diversify its membership and leadership. These efforts are summarized here, along with progress, lessons learned, and future plans.
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 2 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses for high repetition rate, low pulse energy lasers
Creators: name: Suter, Tim
name: Tomasino, Alessandro
name: Savoini, Matteo
name: Houver, Sarah
name: Johnson, Steven L.
name: Abreu, Elsa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report the coherent generation and detection of terahertz (THz) pulses covering the bandwidth of 0.1-9 THz in a high repetition rate, low pulse energy laser system. In this work we demonstrate the application and evaluation of solid-state biased coherent detection in combination with a spintronic emitter. This combination was used to generate and detect THz pulses in a time-domain spectroscopy (TDS) setup and tested on bulk nonlinear crystals. These results establish a new promising candidate to extend the possibilities for compact, broadband THz TDS systems driven by high repetition rate lasers.
Testing low-loss microstrip materials with MKIDs for microwave applications
Creators: name: Hood, J.
name: Barry, P.
name: Cecil, T.
name: Chang, C.
name: Meyer, S.
name: Li, J.
name: Pan, Z.
name: Shirokoff, E.
name: Tang, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Future measurements of the millimeter-wavelength sky require a low-loss superconducting microstrip, typically made from niobium and silicon-nitride, coupling the antenna to detectors. We propose a simple device for characterizing these low-loss microstrips at 150 GHz. In our device we illuminate an antenna with a thermal source and compare the measured power at 150 GHz transmitted down microstrips of different lengths. The power measurement is made using Microwave Kinetic Inductance Detectors (MKIDs) fabricated directly onto the microstrip dielectric, and comparing the measured response provides a direct measurement of the microstrip loss. Our proposed structure provides a simple device (4 layers and a DRIE etch) for characterizing the dielectric loss of various microstrip materials and substrates. We present initial results using these devices. We demonstrate that the millimeter wavelength loss of microstrip lines, a few tens of millimeters long, can be measured using a practical aluminum MKID with a black body source at a few tens of Kelvin.
description: 6 pages, 5 figures, submitted to Journal of Low Temperature Physics
Winrich Schwellnus, Wartberg-Gruppe und hessische Megalithik. Ein Beitrag zum späten Neolithikum des Hessischen Berglandes
Creators: name: Müller, D. W.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Winrich Schwellnus, Wartberg-Gruppe und hessische Megalithik. Ein Beitrag zum späten Neolithikum des Hessischen Berglandes. Materialien zur Vor- und Frühgeschichte von Hessen 4. Selbstverlag des Landesamtes für Denkmalpflege Hessen, Wiesbaden 1979. VII und 94 Seiten, 54 Textabbildungen, 5 Tabellen, 42 Tafeln.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
The Madelung Constant in $N$ Dimensions
Creators: name: Burrows, Antony
name: Cooper, Shaun
name: Schwerdtfeger, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce two convergent series expansions (direct and recursive) in terms of Bessel functions and representations of sums $r_N(m)$ of squares for $N$-dimensional Madelung constants, $M_N(s)$, where $s$ is the exponent of the Madelung series (usually chosen as $s=1/2$). The functional behavior including analytical continuation, and the convergence of the Bessel function expansion is discussed in detail. Recursive definitions are used to evaluate $r_N(m)$. Values for $M_N(s)$ for $s=\tfrac{1}{2}, \tfrac{3}{2}, 3$ and 6 for dimension up to $N=20$ and for $M_N(1/2)$ up to $N=100$ are presented. Zucker's original analysis on $N$-dimensional Madelung constants for even dimensions up to $N=8$ and their possible continuation into higher dimensions is briefly analyzed.
description: 16 pages, 7 figures
Wolfgang Hoben, Terminologische Studien zu den Sklavenerhebungen der römischen Republik
Creators: name: Backhaus, Wilhelm
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Wolfgang Hoben, Terminologische Studien zu den Sklavenerhebungen der römischen Republik. Forschungen zur antiken Sklaverei 9. Franz Steiner Verlag, Wiesbaden 1978. VIII und 160 Seiten.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
Ab initio Circular Dichroism with the Yambo code: applications to dipeptides
Creators: name: Molteni, Elena
name: Cappellini, Giancarlo
name: Sangalli, Davide
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Circular dichroism (CD) spectroscopy is a useful technique for characterizing chiral molecules. It is more sensitive than total absorption to molecule conformation, and it is routinely used to identify enantiomers. We present here a first principles implementation of CD with application to three cyclo-dipeptides. Our CD approach for molecules has been integrated in the 5.0 release of the Yambo code [1], distributed under GPL.
description: 9 pages, 5 figures
Innovative Frontline Nurse Leader Professional Development Program
Creators: name: Monahan, Laura
name: McGarity, Tammy
name: Reed, Charles
name: Zhao, Meng
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: subject: 111099 Nursing not elsewhere classified
subject: FOS: Health sciences

description: Frontline nurse leaders direct staff and unit systems while ensuring that quality, safe patient care is provided. It is unknown if frontline nurse leaders oriented with only on-the-job-training are competent and if a professional development program will improve their competencies. This project’s purpose was to measure self-assessed competencies, using the Nurse Manager Inventory Tool, of 38 frontline nurse leaders. This project used a quasi-experimental design and utilized pre- and postsurvey for evaluation purposes of a leadership development curriculum.
Computation of generating symmetries
Creators: name: Rasin, Alexander G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 58D19 17B80

description: In this article we continue to develop the theory of generating symmetries for integrable equations. A technique for computation of generating symmetries using Maple is presented. The technique is based on the standard symmetry method. By using it we find generating symmetries for the KdV, Camassa-Holm, mKdV, sine-Gordon, Boussinesq, associated Degasperis-Procesi and associated Novikov equations.
description: 17 pages
Modification of Eckart theory of relativistic dissipative fluid by introducing extended matching conditions
Creators: name: Osada, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We deal with a novel approach to formulation of the relativistic dissipative hydrodynamics by extending the so-called matching conditions widely used in the literature. The form of the non-equilibrium entropy current can be determined by requiring thermodynamical stability of the entropy current under extended matching conditions. We derive equations of motion for the relativistic dissipative fluid based on the Eckart theory and show that linearized equations obtained from them are stable against small perturbations. It is also shown that the required fluid stability conditions are related to the causality of the model.
description: 9 pages
Fortnet, a software package for training Behler-Parrinello neural networks
Creators: name: van der Heide, Tammo
name: Kullgren, Jolla
name: Broqvist, Peter
name: Bačić, Vladimir
name: Frauenheim, Thomas
name: Aradi, Bálint
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A new, open source, parallel, stand-alone software package (Fortnet) has been developed, which implements Behler-Parrinello neural networks. It covers the entire workflow from feature generation to the evaluation of generated potentials, coupled with higher-level analysis such as the analytic calculation of atomic forces. The functionality of the software package is demonstrated by driving the training for the fitted correction functions of the density functional tight binding (DFTB) method, which are commonly used to compensate the inaccuracies resulting from the DFTB approximations to the Kohn-Sham Hamiltonian. The usual two-body form of those correction functions limits the transferability of the parameterizations between very different structural environments. The recently introduced DFTB+ANN approach strives to lift these limitations by combining DFTB with a near-sighted artificial neural network (ANN). After investigating various approaches, we have found the combination of DFTB with an ANN acting on-top of some baseline correction functions (delta learning) the most promising one. It allowed to introduce many-body corrections on top of two-body parametrizations, while excellent transferability to chemical environments with deviating energetics could be demonstrated.
Objects and Goals Extraction from Semantic Networks : Applications of Fuzzy SetS Theory
Creators: name: Omri, Mohamed Nazih
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: In this paper we present a short survey of fuzzy and Semantic approaches to Knowledge Extraction. The goal of such approaches is to define flexible Knowledge Extraction Systems able to deal with the inherent vagueness and uncertainty of the Extraction process. In this survey we address if and how some approaches met their goal.
description: arXiv admin note: text overlap with arXiv:1206.1042, arXiv:1206.0925
Production of Dicalcium phosphate from dairy processing waste
Creators: name: Vishal, Zende
Publisher: name: Zenodo
Year: 2021
Subjects: Dairy processing waste, dairy ashes, phosphorus recovery

description: The document contains the research presented at University of Limerick (UL), Ireland. The research work completed until that date on recovery of phosphorus from dairy ashes to produce Dicalcium phosphate using GetmoreP route ( developed and patented by Prayon) was presented to the UL Environmental Research Network.