cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
All-optical Compton gamma-ray source
Creators: name: Phuoc, K. Ta
name: Corde, S.
name: Thaury, C.
name: Malka, V.
name: Tafzi, A.
name: Goddet, J. P.
name: Shah, R. C.
name: Sebban, S.
name: Rousse, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: One of the major goals of research for laser-plasma accelerators is the realization of compact sources of femtosecond X-rays. In particular, using the modest electron energies obtained with existing laser systems, Compton scattering a photon beam off a relativistic electron bunch has been proposed as a source of high-energy and high-brightness photons. However, laser-plasma based approaches to Compton scattering have not, to date, produced X-rays above 1 keV. Here, we present a simple and compact scheme for a Compton source based on the combination of a laser-plasma accelerator and a plasma mirror. This approach is used to produce a broadband spectrum of X-rays extending up to hundreds of keV and with a 10,000-fold increase in brightness over Compton X-ray sources based on conventional accelerators. We anticipate that this technique will lead to compact, high-repetition-rate sources of ultrafast (femtosecond), tunable (X- through gamma-ray) and low-divergence (~1 degree) photons from source sizes on the order of a micrometre.
description: 6 pages, 5 figures
Multi-wavelength campaign on NGC 7469 IV. The broad-band X-ray spectrum
Creators: name: Middei, R.
name: Bianchi, S.
name: Cappi, M.
name: Petrucci, P-O.
name: Ursini, F.
name: Arav, N.
name: Behar, E.
name: Branduardi-Raymont, G.
name: Costantini, E.
name: De Marco, B.
name: Di Gesu, L.
name: Ebrero, J.
name: Kaastra, J.
name: Kaspi, S.
name: Kriss, G. A.
name: Mao, J.
name: Mehdipour, M.
name: Paltani, S.
name: Peretz, U.
name: Ponti, G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We conducted a multi-wavelength six-month campaign to observe the Seyfert galaxy NGC~7469, using the space-based observatories \textit{HST}, \textit{Swift}, \textit{XMM-Newton} and \textit{NuSTAR}. Here we report the results of the spectral analysis of the 7 simultaneous \textit{XMM-Newton} and \textit{NuSTAR} observations. The sources shows significant flux variability within each observation, but the average flux is less variable among the different pointings of our campaign. Our spectral analysis reveals a prominent narrow neutral \ion{Fe} K$α$ emission line in all the spectra, with weaker contributions from Fe K$β$, neutral Ni K$α$ and ionised iron. We find no evidence for variability or relativistic effects acting on the emission lines, which indicates that they originate from distant material. Analysing jointly \textit{XMM-Newton} and \textit{NuSTAR} data a constant photon index is found ($Γ$=$1.78\pm0.02$), together with a high energy cut-off $E_{\rm{cut}}=170^{+60}_{-40}$ keV. Adopting a self-consistent Comptonization model, these values correspond to an average coronal electron temperature of kT=$45^{+15}_{-12}$ keV and, assuming a spherical geometry, an optical depth $τ=2.6\pm0.9$. The reflection component is consistent with being constant, with a reflection fraction in the range $R=0.3-0.6$. A prominent soft excess dominates the spectra below 4 keV. This is best fit with a second Comptonization component, arising from a \virg{warm corona} with an average $kT=0.67\pm0.03$ keV and a corresponding optical depth $τ=9.2\pm0.2$.
description: 11 pages, 5 figures, accepted by A&A
Indication for dominating surface absorption in crystalline silicon test masses at 1550nm
Creators: name: Khalaidovski, Alexander
name: Steinlechner, Jessica
name: Schnabel, Roman
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The sensitivity of future gravitational wave (GW) observatories will be limited by thermal noise in a wide frequency band. To reduce thermal noise, the European GW observatory Einstein GW Telescope (ET) is suggested to use crystalline silicon test masses at cryogenic temperature and a laser wavelength of 1550nm. Here, we report a measurement of the optical loss in a prototype high-resistivity crystalline silicon test mass as a function of optical intensity at room temperature. The total loss from both the bulk crystal and the surfaces was determined in a joint measurement. The characterization window ranged from small intensities below 1W/cm^2, as planned to be used in ET, up to 21kW/cm^2. A non-linear absorption was observed for intensities above a few kW/cm^2. In addition we have observed an intensity-independent offset that possibly arises from absorption in the crystal surfaces. This absorption was estimated to approx. 800 ppm/surface, which might be too high for a cryogenic operation of a fibre-suspended silicon test mass. Such an offset was not observed in other recent measurements that were insensitive to surface absorption. Finally, a set of further characterization measurements is proposed to clearly separate the contributions from the surfaces and the bulk crystal.
description: 8 pages, 4 figures-
A Comparative Analysis of the COVID-19 Infodemic in English and Chinese: Insights from Social Media Textual Data
Creators: name: Luo, Jia
name: Peng, Daiyun
name: Shi, Lei
name: Baz, Didier El
name: Liu, Xinran
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The COVID-19 infodemic, characterized by the rapid spread of misinformation and unverified claims related to the pandemic, presents a significant challenge. This paper presents a comparative analysis of the COVID-19 infodemic in the English and Chinese languages, utilizing textual data extracted from social media platforms. To ensure a balanced representation, two infodemic datasets were created by augmenting previously collected social media textual data. Through word frequency analysis, the thirty-five most frequently occurring infodemic words are identified, shedding light on prevalent discussions surrounding the infodemic. Moreover, topic clustering analysis uncovers thematic structures and provides a deeper understanding of primary topics within each language context. Additionally, sentiment analysis enables comprehension of the emotional tone associated with COVID-19 information on social media platforms in English and Chinese. This research contributes to a better understanding of the COVID-19 infodemic phenomenon and can guide the development of strategies to combat misinformation during public health crises across different languages.
On the use of running $α_s$ in calculations of radiative energy loss of fast partons in a quark-gluon plasma
Creators: name: Zakharov, B. G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The incorporation of running $α_s$ for the gluon emission vertex in calculations of radiative parton energy loss in a quark-gluon plasma is discussed. It is argued that the virtuality scale for running $α_s$ for induced gluon emission is determined by the square of the transverse momentum of the emitted gluon rather than by the square of the invariant mass of the final two-parton state often used in the literature.
description: 5 pages, 2 figures, published in JETP Letters
title: Aargauische Heimatgeschichte
Creators: name: Reinecke, Paul
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Aargauische Heimatgeschichte. Lief. I: Erdgeschichtliche Landeskunde des Aargaues von Dr. A. Hartmann, Urgeschichte von Dr. R. Bosch. Aarau 1932, Verlag H. R. Sauerländer & Co. 80 Seiten mit Abbildungen im Text, 16 Bildtafeln, einer Profiltafel samt Beilage und einer Karte.
Error measures for finite element ocean modelling
Creators: name: Power, Philip William
Publisher: name: Imperial College London
Year: 2023

description: This thesis presents goal-based error measures and applies them, via appropriate metric tensors, to the adaptation of three dimensional anisotropic tetrahedral finite element meshes for a range of oceanographic modelling problems. The overall aim of this work is to produce error measures which are able to resolve the flow features of an ocean over a wide range of spatial and temporal scales simultaneously. For example, western boundary currents, the Antarctic Circumpolar Current (ACC), equatorial jets, meddies (mid-latitude eddies) and Open Ocean Deep Convection. Conventional numerical ocean models generally use static meshes. The use of dynamically-adaptive meshes has many potential advantages but needs to be guided by an error measure. Mesh quality is gauged with respect to the metric tensor which embodies the error measure, such that an ideal element has sides of unit length when measured with respect to this metric tensor. The result is meshes in which each finite element node has approximately equal (subject to certain boundary confonning constraints and the performance of the mesh optimisation procedure) error contribution. Error measures are formulated which measure the error contribution of each solution variable to an overall goal, which encompasses important features of the flow structure and is embodied in an integral form, e.g. the integral of the solution in a small region of the domain of interest. The sensitivity of the functional, taken with respect to the solution variables, is used as the basis from which error measures are derived. The error measures then act to predict those areas of the domain where resolution should be changed and lead to the solution of so-called forward and adjoint (backward) problems. Focus is given to developing relatively simple methods that refer to information readily accessible from the discretized equation sets and do not explicitly use equation residuals.
Thermal effective potential in two- and three- dimensional non-commutative spaces
Creators: name: Devi, Yendrembam Chaoba
name: Ghosh, Kumar Jang Bahadur
name: Chakraborty, Biswajit
name: Scholtz, Frederik
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Thermal correlation functions and the associated effective statistical potential are computed in two- and three-dimensional non-commutative space using an operator formulation that makes no reference to a star product. The corresponding results for the Moyal and Voros star products are then easily obtained by taking the corresponding overlap with Moyal and Voros bases. The forms of the correlation function and the effective potential are found to be the same, except that in the Voros case the thermal length undergoes a non-commutative deformation, ensuring that it has a lower bound of the order of $\sqrtθ$. It is shown that in a suitable basis (called here quasi-commutative) in the multi-particle sector the thermal correlation function coincides with the commutative result both in the Moyal and Voros cases, with an appropriate non-commutative correction to the thermal length in the Voros case, and that the Pauli principle is restored.
description: 31 pages, 7 figures
Disorder, critical currents, and vortex pinning energies in isovalently substituted BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$
Creators: name: Demirdis, Sultan
name: Fasano, Yanina
name: Kasahara, Shigeru
name: Terashima, Takahito
name: Shibauchi, Takasada
name: Matsuda, Yuji
name: Konczykowski, Marcin
name: Pastoriza, H.
name: Van Der Beek, Cornelis Jacominus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a comprehensive overview of vortex pinning in single crystals of the isovalently substituted iron-based superconductor BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$, a material that qualifies as an archetypical clean superconductor, containing only sparse strong point-like pins [in the sense of C.J. van der Beek {\em et al.}, Phys. Rev. B {\bf 66}, 024523 (2002)]. Widely varying critical current values for nominally similar compositions show that flux pinning is of extrinsic origin. Vortex configurations, imaged using the Bitter decoration method, show less density fluctuations than those previously observed in charge-doped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ single crystals. Analysis reveals that the pinning force and -energy distributions depend on the P-content $x$. However, they are always much narrower than in Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$, a result that is attributed to the weaker temperature dependence of the superfluid density on approaching $T_{c}$ in BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$. Critical current density measurements and pinning force distributions independently yield a mean distance between effective pinning centers $\bar{\mathcal L} \sim 90$ nm, increasing with increasing P-content $x$. This evolution can be understood as being the consequence of the P-dependence of the London penetration depth. Further salient features are a wide vortex free "Meissner belt", observed at the edge of overdoped crystals, and characteristic chain-like vortex arrangements, observed at all levels of P-substitution.
description: 11 pages
AC Losses of Copper Stabilized Multifilament YBCO Coated Conductors
Creators: name: Levin, G. A.
name: Murphy, J.
name: Haugan, T. J.
name: Šouc, J.
name: Kováč, J.
name: Kováč, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the data on magnetization losses and critical current of multifilament copper stabilized coated conductors. Eight centimeters long samples of copper stabilized YBa2Cu3O7-x (YBCO) coated conductors manufactured commercially were subdivided into superconducting filaments by near-IR laser micromachining. The width of the superconducting stripes was varied from 0.2 mm to 0.04 mm. Some of the samples were striated leaving superconducting bridges for current sharing between the filaments. The AC losses were measured at different sweep rates of the magnetic field up to 14 T/s. We will present the results for the hysteresis and coupling losses and discuss the means to reduce the coupling loss by changing the processing parameters of micromachining and by post-ablation treatment.
description: In the first version of this preprint the value of copper resistivity used for calculating eddy current losses was ten times lower than the actual value. Please don't ask how that could have happened. Correspondingly, the conclusions described in the first column on page 4 were wrong and are now corrected
Vinogradov's Theorem with Fouvry-Iwaniec Primes
Creators: name: Grimmelt, Lasse
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We show that every sufficiently large $x\equiv 3(4)$ can be written as the sum of three primes, each of which is a sum of a square and a prime square. The main tools are a transference version of the circle method and various sieve related ideas.
description: 60 pages. Updated version corrects several minor issues of original paper. To appear in Algebra and Number Theory
Nuclear decay parameter oscillations as possible signal of quantum-mechanical nonlinearity and emergent gravity
Creators: name: Mayburov, S. N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Several experimental groups reported the evidence of multiple periodic modulations of nuclear decay constants which amplitudes are of the order .1% and periods of one year, 24 hours or about one month. We argue that such deviations from radioactive decay law can be described in nonlinear quantum mechanics framework, in which decay process obeys to nonlinear Shroedinger equation with Doebner-Goldin terms. Proposed corrections to Hamiltonian of quantum system interaction with gravitation field correspond to some emergent gravity theories, in particular, bilocal gravity model. Decay parameter variations under influence of Sun gravity, calculated in our model, agree well with experimental results for alpha-decay life-time oscillations of Polonium isotopes
description: 10 pages, talk given at 'Quantum Structures - 2018' conference, Kazan, Russia, July 2018, Int. J. Theor. Phys. (2021) DOI 10.1007/s10773-019-04237x
X-ray plateaus followed by sharp drops in GRBs 060413, 060522, 060607A and 080330: Further evidences for central engine afterglow from Gamma-ray Bursts
Creators: name: Zhang, Xiao-Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The X-ray afterglows of GRBs 060413, 060522, 060607A and 080330 are characterized by plateaus that are followed by very sharp drops. An X-ray plateau is interpretable within the framework of the external forward shock model but the sharp drop is not. In this work we interpret these peculiar X-ray afterglow data as the central engine afterglows from some magnetized central engines, plausibly magnetars. In this model, the X-ray afterglows are powered by the internal magnetic energy dissipation and the sudden drop is caused by the collapse of the magnetar. Accordingly, the X-ray plateau photons should have a high linear polarization, which can be tested by the future X-ray polarimetry.
Pavlov's dog associative learning demonstrated on synaptic-like organic transistors
Creators: name: Bichler, O.
name: Zhao, W.
name: Alibart, F.
name: Pleutin, S.
name: Lenfant, S.
name: Vuillaume, D.
name: Gamrat, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Emerging Technologies (cs.ET)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this letter, we present an original demonstration of an associative learning neural network inspired by the famous Pavlov's dogs experiment. A single nanoparticle organic memory field effect transistor (NOMFET) is used to implement each synapse. We show how the physical properties of this dynamic memristive device can be used to perform low power write operations for the learning and implement short-term association using temporal coding and spike timing dependent plasticity based learning. An electronic circuit was built to validate the proposed learning scheme with packaged devices, with good reproducibility despite the complex synaptic-like dynamic of the NOMFET in pulse regime.
Unified Quantification of Quantum Defects in Small-Diameter Single-Walled Carbon Nanotubes by Raman Spectroscopy
Creators: name: Sebastian, Finn L.
name: Becker, Felicitas
name: Yomogida, Yohei
name: Hosokawa, Yuuya
name: Settele, Simon
name: Lindenthal, Sebastian
name: Yanagi, Kazuhiro
name: Zaumseil, Jana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The covalent functionalization of single-walled carbon nanotubes (SWCNTs) with luminescent quantum defects enables their application as near-infrared single-photon sources, as optical sensors, and for in-vivo tissue imaging. Tuning the emission wavelength and defect density are crucial for these applications. While the former can be controlled by different synthetic protocols and is easily measured, defect densities are still determined as relative rather than absolute values, limiting the comparability between different nanotube batches and chiralities. Here, we present an absolute and unified quantification metric for the defect density in SWCNT samples based on Raman spectroscopy. It is applicable to a range of small-diameter nanotubes and for arbitrary laser wavelengths. We observe a clear inverse correlation of the D/G$^{+}$ ratio increase with nanotube diameter, indicating that curvature effects contribute significantly to the defect-activation of Raman modes. Correlation of intermediate frequency modes with defect densities further corroborates their activation by defects and provides additional quantitative metrics for the characterization of functionalized SWCNTs.
title: Lusthausruine im Stuttgarter Schlossgarten. Das Schicksal eines besonderen Denkmals
Creators: name: Ziegler, Nikolai
name: Plate, Ulrike
name: Kreißl, Thomas
name: Kieferle, Albert
Publisher: name: University Library Heidelberg
Year: 2016

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 45, Nr. 2 (2016), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Carex frigida
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. frigida X nivea Cat. 94. NachTh.WolfLit. cit-,S.529-530,Bastardund Vorkommen im Wallis (Illhorn, leg. F. 0. Wolf; vgl. Cat.) fraglich.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Infrared finiteness of a thermal theory of scalar electrodynamics to all orders
Creators: name: Sen, Pritam
name: Indumathi, D.
name: Choudhury, Debajyoti
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Models explaining dark matter typically include interactions with charged scalar and fermion fields. The Infra-Red (IR) finiteness of thermal field theories of charged fermions (fermionic QED) has been proven to all orders in perturbation theory. Here we reexamine the IR behaviour of charged scalar theories at finite temperature. Using the method of Grammer and Yennie, we identify and factorise the infra-red divergences to all orders in perturbation theory. The inclusion of IR finite pieces arising from the 4-point interaction terms of scalars with photon fields is key to the exponentiation. We use this in a companion paper to prove the IR finiteness of the corresponding thermal theory which is of relevance in dark matter calculations.
description: 41 pages, 11 figures; original set of two papers on (1) T=0 and (2) finite T scalar and bino-like theories of dark matter revised into (1) scalar electrodynamics at all temperatures and (2) bino-like theory of dark matter at all temperatures. This is paper 1. arXiv admin note: substantial text overlap with arXiv:1812.06468
Enhancing predictions of embryo implantation in thin endometrium: a comparative analysis of endometrial thickness in frozen versus fresh IVF cycles
Creators: name: Kahana, Adiel
name: Many, Ittai
name: Fouks, Yuval
name: Almog, Benny
name: Baruch, Yoav
name: Hamilton, Emily
name: Azem, Foad
name: Cohen, Yoni
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: This study investigated whether the difference between endometrial thickness in the frozen embryo transfer (FET) cycle and the preceding fresh stimulated cycle predicts clinical pregnancy in women with thin endometrium. A retrospective analysis of 335 cycles in 227 women (age < 43) with endometrium < 8 mm in the FET cycle was conducted. Endometrial thickness was assessed using the ratio (ETfrozen/fresh) and absolute difference (ETfresh-frozen) between the maximal endometrial thickness measured during the stimulated IVF cycle and that measured in the FET cycle. We hypothesized that a smaller difference and higher ratio during FET will be associated with higher pregnancy rate. No embryo implantation occurred in women with an FET endometrial thickness < 5.9 mm and an ETfrozen/fresh < 0.86. Cycles with a positive beta-human chorionic gonadotropin (ß-hCG) showed a significantly lower mean ETfresh-frozen (1.89 ± 1.78 vs 2.30 ± 1.81, p = 0.03), and a significantly higher ETfrozen/fresh ratio (0.82 ± 0.17 vs. 0.77 ± 0.15, p = 0.024). Endometrial thickness in the FET cycle normalized to the preceding stimulated cycle is associated with implantation and may constitute a novel predictor of FET success in women with thin endometrium.
Automatic Peccei-Quinn symmetry
Creators: name: Gavela, M. B.
name: Ibe, M.
name: Quilez, P.
name: Yanagida, T. T.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a dynamical (composite) axion model where the Peccei-Quinn (PQ) symmetry arises automatically as a consequence of chirality and gauge symmetry. The Standard Model is simply extended by a confining and chiral $SU(5)$ gauge symmetry. The PQ symmetry coincides with a $B-L$ symmetry of the exotic sector. The theory is protected by construction from quantum gravitational corrections stemming from operators with mass dimension lower than nine.
description: 28 pages, 2 figures
Generalized Conditional Gradient with Augmented Lagrangian for Composite Minimization
Creators: name: Silveti-Falls, Antonio
name: Molinari, Cesare
name: Fadili, Jalal
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J52, 65K05

description: In this paper we propose a splitting scheme which hybridizes generalized conditional gradient with a proximal step which we call CGALP algorithm, for minimizing the sum of three proper convex and lower-semicontinuous functions in real Hilbert spaces. The minimization is subject to an affine constraint, that allows in particular to deal with composite problems (sum of more than three functions) in a separate way by the usual product space technique. While classical conditional gradient methods require Lipschitz-continuity of the gradient of the differentiable part of the objective, CGALP needs only differentiability (on an appropriate subset), hence circumventing the intricate question of Lipschitz continuity of gradients. For the two remaining functions in the objective, we do not require any additional regularity assumption. The second function, possibly nonsmooth, is assumed simple, i.e., the associated proximal mapping is easily computable. For the third function, again nonsmooth, we just assume that its domain is also bounded and that a linearly perturbed minimization oracle is accessible. In particular, this last function can be chosen to be the indicator of a nonempty bounded closed convex set, in order to deal with additional constraints. Finally, the affine constraint is addressed by the augmented Lagrangian approach. Our analysis is carried out for a wide choice of algorithm parameters satisfying so called "open loop" rules. As main results, under mild conditions, we show asymptotic feasibility with respect to the affine constraint, boundedness of the dual multipliers, and convergence of the Lagrangian values to the saddle-point optimal value. We also provide (subsequential) rates of convergence for both the feasibility gap and the Lagrangian values.
The hybrid B-type pulsator $γ$ Pegasi: mode identification and complex seismic modelling
Creators: name: Walczak, Przemysław
name: Daszyńska-Daszkiewicz, Jadwiga
name: Pamyatnykh, Alexey A.
name: Zdravkov, Tomasz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present interpretation of the oscillation spectrum of the early B-type star $γ$ Pegasi, in which both low order p/g and high-order g-modes are observed. Using amplitudes and phases of the photometric and radial velocity variations, we identify/constrain the mode degree, $\ell$, for all 14 detected frequencies. Seismic models fitting two pulsational frequencies corresponding to the modes $\ell=0$, p$_1$ and $\ell=1$, g$_1$ were constructed. This set of models contains those which reproduce also the empirical values of the complex nonadiabatic parameter $f$ associated to these two mode frequencies. Unfortunately, there are no models reproducing the values of $f$ for both frequencies simultaneously, regardless of model atmospheres, opacity data, chemical mixture as well as opacity enhancement in the $Z-$ and Deep Opacity Bumps. Most probably, some modifications of the opacities in stellar interiors are still required.
description: 11 pages, 10 figures
On quantization of the SU(2) Skyrmions
Creators: name: Jurciukonis, D.
name: Norvaisas, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: There are two known approaches for quantizing the SU(2) Skyrme model, the semiclassical and canonical quantization. The semiclassical approach does not take into account the non-commutativity of velocity of quantum coordinates and the stability of the semiclassical soliton is conveniently ensured by the symmetry breaking term. The canonical quantum approach leads to quantum mass correction that is not obtained in the semiclassical approach. In this letter we argue that these two approaches are not equivalent and lead to different results. We show that the resulting profile functions have the same asymptotic behaviour, however their shape in the region close to the origin is different.
description: 5 pages, 2 figures. In Physics Letters B, 2013
Three Dimensional Broadband Tunable Terahertz Metamaterials
Creators: name: Fan, Kebin
name: Strikwerda, Andrew C.
name: Zhang, Xin
name: Averitt, Richard D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present optically tunable magnetic 3D metamaterials at terahertz (THz) frequencies which exhibit a tuning range of ~30% of the resonance frequency. This is accomplished by fabricating 3D array structures consisting of double-split-ring resonators (DSRRs) on silicon-on-sapphire, fabricated using multilayer electroplating. Photoexcitation of free carriers in the silicon within the capacitive region of the DSRR results in a red-shift of the resonant frequency from 1.74 THz to 1.16 THz. The observed frequency shift leads to a transition from a magnetic-to-bianisotropic response as verified through electromagnetic simulations and parameter retrieval. Our approach extends dynamic metamaterial tuning to magnetic control, and may find applications in switching and modulation, polarization control, or tunable perfect absorbers.
description: 5pages
Compact objects in conformal nonlinear electrodynamics
Creators: name: Denisova, I. P.
name: Garmaev, B. D.
name: Sokolov, V. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider a special case of vacuum non-linear electrodynamics with a stress-energy tensor conformal to the Maxwell theory. Distinctive features of this model are: the absence of dimensional parameter for non-linearity description and a very simple form of the dominant energy condition, which can be easily verified in an arbitrary pseudo-riemannian space-time with the consequent constrains on the model parameters. In this paper we analyse some properties of astrophysical compact objects coupled to conformal vacuum non-linear electrodynamics.
title: A Comparative Analysis of Nurse Leaders' Degree of Transformational Leadership and Staff Nurse Job Satisfaction
Creators: name: Weatherly, Kathie Sawyer
Publisher: name: Old Dominion University Libraries
Year: 1991

description: The intensified pressure for change in nursing organizations has presented nurse leaders with opportunities to transform bureaucratic settings into professional practice environments. Transformational leadership has been identified as supporting the changing values of staff nurses and promoting job satisfaction. The purpose of this study was to explore nurse leaders' degree of transformational leadership and the relationship between transformational leadership and staff nurse job satisfaction. Quantitative analysis, using an independent t-test, indicated a significant difference between nurse leaders' and staff nurses' perception of the nurse leaders' degree of transformational leadership. Pearson correlation analysis indicated a significant relationship between transformational leadership and staff nurse job satisfaction. Staff nurses of high-scoring transformational leaders were more positive about their work environment and level of performance. Multiple regression analysis revealed 17% of the variance in staff nurse job satisfaction was explained by nurse leader transformational leadership scores.
title: Valentin Kuzsinszky, Das große römische Töpferviertel in Aquincum bei Budapest
Creators: name: Kubitschek, Wilhelm
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Valentin Kuzsinszky, Das große römische Töpferviertel in Aquincum bei Budapest. Budapest Régiségei XI 1932 (ungarisch mit deutschem Auszug) 4°, 423 Seiten, 397 Abbildungen, 1 Plan.
Significance of the Casimir force and surface roughness for actuation dynamics of MEMS
Creators: name: Broer, Wijnand
name: Palasantzas, George
name: Knoester, Jasper
name: Svetovoy, Vitaly B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the measured optical response and surface roughness topography as inputs, we perform realistic calculations of the combined effect of Casimir and electrostatic forces on the actuation dynamics of micro-electromechanical systems (MEMS). In contrast with the expectations, roughness can influence MEMS dynamics even at distances between bodies significantly larger than the root-mean-square roughness. This effect is associated with statistically rare high asperities that can be locally close to the point of contact. It is found that, even though surface roughness appears to have a detrimental effect on the availability of stable equilibria, it ensures that those equilibria can be reached more easily than in the case of flat surfaces. Hence our findings play a principal role for the stability of microdevices such as vibration sensors, switches, and other related MEM architectures operating at distances below 100 nm.
description: 9 pages, 3 figures, published in PRB
Simplified Models of Flavourful Leptoquarks
Creators: name: Varzielas, Ivo de Medeiros
name: Talbert, Jim
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the implications of single leptoquark extensions of the Standard Model (SM) under the assumption that their enhanced Yukawa sectors are invariant under global Abelian flavour symmetries already present in SM mass terms. Such symmetries, assumed to be the `residual' subgroups of an ultra-violet flavour theory, have previously been considered in order to predict fermionic mixing angles. Here we focus instead on their effect on the novel flavour structures sourced by the leptoquark representations that address the present ${R}_{K^{(\star)}}$ anomalies in semileptonic rare $B$-decays. Combined with existing flavour data, the residual symmetries prove to be extremely constraining; we find that the (quark-lepton) leptoquark Yukawa couplings fall within $\mathcal{O}(10)$ highly predictive patterns, each with only a single free parameter, when `normal' (SM-like) hierarchies are assumed. In addition, proton decay for the scalar SU(2) triplet representation is naturally avoided in the residual symmetry approach without relying on further model building. Our results indicate that a simultaneous explanation for the ${R}_{K^{(\star)}}$ anomalies and the flavour puzzle may be achieved in a simplified, model-independent formalism.
description: 29 pages. v2: new section on qualitative discussion of collider implications and some clarifying edits added. Matches published version
title: Pre-Natal Learning Needs Perceptions of Expectant Parents and Childhood Educators
Creators: name: Sweeney, Cynthia Divens
Publisher: name: Old Dominion University Libraries
Year: 1987

description: The purpose of this study was to examine the differences between the unique learning needs of expectant parents and those perceived by childbirth educators. A purposive sample of 40 expectant parents and ten childbirth educators completed the Expectant Parents Learning Needs Tool (EPLNT) and a demographic inventory developed by the researcher. Subjects were classified into five groups based on their status as first-time fathers, repeat fathers, first-time mothers, repeat mothers, and childbirth educators. Data were analyzed using t-tests for independent samples and an ANOVA for group differences. The results showed significant differences in the learning needs between the expectant parents and childbirth educators.
Forward Discretely Self-Similar Solutions of the MHD Equations and the Viscoelastic Navier-Stokes Equations with Damping
Creators: name: Lai, Chen-Chih
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we prove the existence of forward discretely self-similar solutions to the MHD equations and the viscoelastic Navier-Stokes equations with damping with large weak $L^3$ initial data. The same proving techniques are also applied to construct self-similar solutions to the MHD equations and the viscoelastic Navier-Stokes equations with damping with large weak $L^3$ initial data. This approach is based on [Z. Bradshaw and T.-P. Tsai, Ann. Henri Poincar'{e}, vol. 18, no. 3, 1095-1119, 2017].
title: Irmingard Moosdorf-Ottinger: Der Goldberg bei Türkheim. Bericht über die Grabungen in den Jahren 1942-1944 und 1958-1961. München 1981
Creators: name: Schallmayer, Egon
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Irmingard Moosdorf-Ottinger: Der Goldberg bei Türkheim. Bericht über die Grabungen in den Jahren 1942-1944 und 1958-1961 mit Beiträgen von Helmut Bender und Georg Glowatzki. Veröffentlichung der Kommission zur archäologischen Erforschung des spätrömischen Raetien der Bayerischen Akademie der Wissenschaften. Münchner Beiträge zur Vor- und Frühgeschichte Band 24, Textband und Beilagenmappe. C. H. Beck’sche Verlagsbuchhandlung, München 1981. XIV/220 Seiten, Tafel (A), 43 Textabbildungen, Tabellen, 41 Tafeln, 15 Planbeilagen in Beilagenmappe.
Extending the Fermi-LAT Data Processing Pipeline to the Grid
Creators: name: Zimmer, Stephan
name: Arrabito, Luisa
name: Glanzman, Tom
name: Johnson, Tony
name: Lavalley, Claudia
name: Tsaregorodtsev, Andrei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The Data Handling Pipeline ("Pipeline") has been developed for the Fermi Gamma-Ray Space Telescope (Fermi) Large Area Telescope (LAT) which launched in June 2008. Since then it has been in use to completely automate the production of data quality monitoring quantities, reconstruction and routine analysis of all data received from the satellite and to deliver science products to the collaboration and the Fermi Science Support Center. Aside from the reconstruction of raw data from the satellite (Level 1), data reprocessing and various event-level analyses are also reasonably heavy loads on the pipeline and computing resources. These other loads, unlike Level 1, can run continuously for weeks or months at a time. In addition it receives heavy use in performing production Monte Carlo tasks. The software comprises web-services that allow online monitoring and provides charts summarizing work flow aspects and performance information. The server supports communication with several batch systems such as LSF and BQS and recently also Sun Grid Engine and Condor. This is accomplished through dedicated job control services that for Fermi are running at SLAC and the other computing site involved in this large scale framework, the Lyon computing center of IN2P3. While being different in the logic of a task, we evaluate a separate interface to the Dirac system in order to communicate with EGI sites to utilize Grid resources, using dedicated Grid optimized systems rather than developing our own. (abstract abridged)
description: This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics: Conference Series. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/1742-6596/396/3/032121
15NH3 in the atmosphere of a cool brown dwarf
Creators: name: Barrado, David
name: Mollière, Paul
name: Patapis, Polychronis
name: Min, Michiel
name: Tremblin, Pascal
name: Martinez, Francisco Ardevol
name: Whiteford, Niall
name: Vasist, Malavika
name: Argyriou, Ioannis
name: Samland, Matthias
name: Lagage, Pierre-Olivier
name: Decin, Leen
name: Waters, Rens
name: Henning, Thomas
name: Morales-Calderón, María
name: Guedel, Manuel
name: Vandenbussche, Bart
name: Absil, Olivier
name: Baudoz, Pierre
name: Boccaletti, Anthony
name: Bouwman, Jeroen
name: Cossou, Christophe
name: Coulais, Alain
name: Crouzet, Nicolas
name: Gastaud, René
name: Glasse, Alistair
name: Glauser, Adrian M.
name: Kamp, Inga
name: Kendrew, Sarah
name: Krause, Oliver
name: Lahuis, Fred
name: Mueller, Michael
name: Olofsson, Göran
name: Pye, John
name: Rouan, Daniel
name: Royer, Pierre
name: Scheithauer, Silvia
name: Waldmann, Ingo
name: Colina, Luis
name: van Dishoeck, Ewine F.
name: Ray, Tom
name: Östlin, Göran
name: Wright, Gillian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Brown dwarfs serve as ideal laboratories for studying the atmospheres of giant exoplanets on wide orbits as the governing physical and chemical processes in them are nearly identical. Understanding the formation of gas giant planets is challenging, often involving the endeavour to link atmospheric abundance ratios, such as the carbon-to-oxygen (C/O) ratio, to formation scenarios. However, the complexity of planet formation requires additional tracers, as the unambiguous interpretation of the measured C/O ratio is fraught with complexity. Isotope ratios, such as deuterium-to-hydrogen and 14N/15N, offer a promising avenue to gain further insight into this formation process, mirroring their utility within the solar system. For exoplanets only a handful of constraints on 12C/13C exist, pointing to the accretion of 13C-rich ice from beyond the disks' CO iceline. Here we report on the mid-infrared detection of the 14NH3 and 15NH3 isotopologues in the atmosphere of a cool brown dwarf with an effective temperature of 380 K in a spectrum taken with the Mid-InfraRed Instrument of the James Webb Space Telescope. As expected, our results reveal a 14N/15N value consistent with star-like formation by gravitational collapse, demonstrating that this ratio can be accurately constrained. Since young stars and their planets should be more strongly enriched in the 15N isotope, we expect that 15NH3 will be detectable in a number of cold, wide-separation exoplanets.
description: Accepted by Nature. 28 pages, 7 figures, uses nature3.cls
Interpolation Consistency Training for Semi-Supervised Learning
Creators: name: Verma, Vikas
name: Kawaguchi, Kenji
name: Lamb, Alex
name: Kannala, Juho
name: Solin, Arno
name: Bengio, Yoshua
name: Lopez-Paz, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We introduce Interpolation Consistency Training (ICT), a simple and computation efficient algorithm for training Deep Neural Networks in the semi-supervised learning paradigm. ICT encourages the prediction at an interpolation of unlabeled points to be consistent with the interpolation of the predictions at those points. In classification problems, ICT moves the decision boundary to low-density regions of the data distribution. Our experiments show that ICT achieves state-of-the-art performance when applied to standard neural network architectures on the CIFAR-10 and SVHN benchmark datasets. Our theoretical analysis shows that ICT corresponds to a certain type of data-adaptive regularization with unlabeled points which reduces overfitting to labeled points under high confidence values.
description: This is the latest version, which is published in the Journal, "Neural Networks", in 2022. All the previous results are unchanged. Keyword: Deep Learning, Semi-supervised Learning, Mixup
On one-point functions for sinh-Gordon model at finite temperature
Creators: name: Negro, S.
name: Smirnov, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using fermionic basis we conjecture the exact formulae for the expectation values of local fields in sinh-Gordon model. The conjecture is checked against previously known results.
description: 21 pages, some explanation on relation to the lattice model is added
Non-Elliptic Webs and Convex Sets in the Affine Building
Creators: name: Akhmejanov, Tair
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2020

description: We describe the $\mathfrak sl_3$ non-elliptic webs in terms of convex sets in the affine building. Kuperberg defined the non-elliptic web basis in his work on rank-$2$ spider categories. Fontaine, Kamnitzer, Kuperberg showed that the $\mathfrak sl_3$ non-elliptic webs are dual to CAT(0) triangulated diskoids in the affine building. We show that each such triangulated diskoid is the intersection of the min-convex and max-convex hulls of a generic polygon in the building. Choosing a generic polygon from each of the components of the Satake fiber produces (the duals of) the non-elliptic web basis. The convex hulls in the affine building were first introduced by Faltings and are related to tropical convexity, as discussed in work by Joswig, Sturmfels, Yu and by Zhang.
description: DOCUMENTA MATHEMATICA, Vol 25 (2020), p. 2413-2443