cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Massive stars dying alone: The extremely remote environment of SN 2009ip
Creators: name: Smith, Nathan
name: Andrews, Jennifer E.
name: Mauerhan, Jon C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present late-time HST images of the site of supernova (SN) 2009ip taken almost 3 yr after its bright 2012 luminosity peak. SN 2009ip is now slightly fainter in broad filters than the progenitor candidate detected by HST in 1999. The current source continues to be dominated by ongoing late-time CSM interaction that produces strong H-alpha emission and a weak pseudo-continuum, as found previously for 1-2 yr after explosion. The intent of these observations was to search for evidence of recent star formation in the local (1kpc; 10 arcsec) environment around SN 2009ip, in the remote outskirts of its host spiral galaxy NGC 7259. We can rule out the presence of any massive star-forming complexes like 30 Dor or the Carina Nebula at the SN site or within a few kpc. If the progenitor of SN 2009ip was really a 50-80 Msun star as archival HST images suggested, then it is strange that there is no sign of this type of massive star formation anywhere in the vicinity. A possible explanation is that the progenitor was the product of a merger or binary mass transfer, rejuvenated after a lifetime that was much longer than 4-5 Myr, allowing its natal H II region to have faded. A smaller region like the Orion Nebula would be an unresolved but easily detected point source. This is ruled out within 1.5 kpc around SN 2009ip, but a small H II region could be hiding in the glare of SN 2009ip itself. Later images after a few more years have passed are needed to confirm that the progenitor candidate is truly gone and to test for the presence of a small H II region or cluster at the SN position.
description: 8 pages, 5 figs. submitted to MNRAS
Neurofilaments function as shock absorbers: compression response arising from disordered proteins
Creators: name: Kornreich, Micha
name: Malka-Gibor, Eti
name: Zuker, Ben
name: Laser-Azogui, Adi
name: Beck, Roy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: What can cells gain by using disordered, rather than folded, proteins in the architecture of their skeleton? Disordered proteins take multiple co-existing conformations, and often contain segments which act as random-walk-shaped polymers. Using X-ray scattering we measure the compression response of disordered protein hydrogels, which are the main stress-responsive component of neuron cells. We find that at high compression their mechanics are dominated by gas-like steric and ionic repulsions. At low compression, specific attractive interactions dominate. This is demonstrated by the considerable hydrogel expansion induced by the truncation of critical short protein segments. Accordingly, the floppy disordered proteins form a weakly cross-bridged hydrogel, and act as shock absorbers that sustain large deformations without failure.
description: 5 pages, 3 figures
Gravitational wave detection in space
Creators: name: Ni, Wei-Tou
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational wave (GW) detection in space is aimed at low frequency band (100 nHz - 100 mHz) and middle frequency band (100 mHz - 10 Hz). The science goals are the detection of GWs from (i) Supermassive Black Holes; (ii) Extreme-Mass-Ratio Black Hole Inspirals; (iii) Intermediate-Mass Black Holes; (iv) Galactic Compact Binaries and (v) Relic GW Background. In this paper, we present an overview on the sensitivity, orbit design, basic orbit configuration, angular resolution, orbit optimization, deployment, time-delay interferometry and payload concept of the current proposed GW detectors in space under study. The detector proposals under study have arm length ranging from 1000 km to 1.3 x 109 km (8.6 AU) including (a) Solar orbiting detectors -- ASTROD-GW (ASTROD [Astrodynamical Space Test of Relativity using Optical Devices] optimized for GW detection), BBO (Big Bang Observer), DECIGO (DECi-hertz Interferometer GW Observatory), e-LISA (evolved LISA [Laser Interferometer Space Antenna]), LISA, other LISA-type detectors such as ALIA, TAIJI etc. (in Earth-like solar orbits), and Super-ASTROD (in Jupiter-like solar orbits); and (b) Earth orbiting detectors -- ASTROD-EM/LAGRANGE, GADFLI/GEOGRAWI/g-LISA, OMEGA and TIANQIN.
description: 48 pages, 10 figures, Chapter 12 in One Hundred Years of General Relativity: From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity, ed.W.-T. Ni (World Scientific, Singapore, 2016); Int. J. Mod. Phys. D, to be published. arXiv admin note: substantial text overlap with arXiv:1212.2816
Ferromagnetic Quantum Critical Point Avoided by the Appearance of Another Magnetic Phase in LaCrGe$_3$ under Pressure
Creators: name: Taufour, Valentin
name: Kaluarachchi, Udhara S.
name: Khasanov, Rustem
name: Nguyen, Manh Cuong
name: Guguchia, Zurab
name: Biswas, Pabitra Kumar
name: Bonfá, Pietro
name: De Renzi, Roberto
name: Lin, Xiao
name: Kim, Stella K.
name: Mun, Eun Deok
name: Kim, Hyunsoo
name: Furukawa, Yuji
name: Wang, Cai-Zhuang
name: Ho, Kai-Ming
name: Bud'ko, Sergey L.
name: Canfield, Paul C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature-pressure phase diagram of the ferromagnet LaCrGe$_3$ is determined for the first time from a combination of magnetization, muon-spin-rotation and electrical resistivity measurements. The ferromagnetic phase is suppressed near $2.1$~GPa, but quantum criticality is avoided by the appearance of a magnetic phase, likely modulated, AFM$_Q$. Our density functional theory total energy calculations suggest a near degeneracy of antiferromagnetic states with small magnetic wave vectors $Q$ allowing for the potential of an ordering wave vector evolving from $Q=0$ to finite $Q$, as expected from the most recent theories on ferromagnetic quantum criticality. Our findings show that LaCrGe$_3$ is a very simple example to study this scenario of avoided ferromagnetic quantum criticality and will inspire further study on this material and other itinerant ferromagnets.
Taylor's Law of temporal fluctuation scaling in stock illiquidity
Creators: name: Cai, Qing
name: Xu, Hai-Chuan
name: Zhou, Wei-Xing
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: Taylor's law of temporal fluctuation scaling, variance $\sim$ $a($mean$)^b$, is ubiquitous in natural and social sciences. We report for the first time convincing evidence of a solid temporal fluctuation scaling law in stock illiquidity by investigating the mean-variance relationship of the high-frequency illiquidity of almost all stocks traded on the Shanghai Stock Exchange (SHSE) and the Shenzhen Stock Exchange (SZSE) during the period from 1999 to 2011. Taylor's law holds for A-share markets (SZSE Main Board, SZSE Small & Mediate Enterprise Board, SZSE Second Board, and SHSE Main Board) and B-share markets (SZSE B-share and SHSE B-share). We find that the scaling exponent $b$ is greater than 2 for the A-share markets and less than 2 for the B-share markets. We further unveil that Taylor's law holds for stocks in 17 industry categories, in 28 industrial sectors and in 31 provinces and direct-controlled municipalities with the majority of scaling exponents $b\in(2,3)$. We also investigate the $Δ{t}$-min illiquidity and find that the scaling exponent $b(Δ{t})$ increases logarithmically for small $Δ{t}$ values and decreases fast to a stable level.
description: 14 Latex pages including 4 figures and 5 tables
A deep X-ray view of the bare AGN Ark 120. I. Revealing the Soft X-ray Line Emission
Creators: name: Reeves, James
name: Porquet, Delphine
name: Braito, Valentina
name: Nardini, Emanuele
name: Lobban, Andrew
name: Turner, Jane
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Seyfert 1 galaxy, Ark 120, is a prototype example of the so-called class of bare nucleus AGN, whereby there is no known evidence for the presence of ionized gas along the direct line of sight. Here deep ($>400$ ks exposure), high resolution X-ray spectroscopy of Ark 120 is presented, from XMM-Newton observations which were carried out in March 2014, together with simultaneous Chandra/HETG exposures. The high resolution spectra confirmed the lack of intrinsic absorbing gas associated with Ark 120, with the only X-ray absorption present originating from the ISM of our own Galaxy, with a possible slight enhancement of the Oxygen abundance required with respect to the expected ISM values in the Solar neighbourhood. However, the presence of several soft X-ray emission lines are revealed for the first time in the XMM-Newton RGS spectrum, associated to the AGN and arising from the He and H-like ions of N, O, Ne and Mg. The He-like line profiles of N, O and Ne appear velocity broadened, with typical FWHM widths of $\sim5000$ km s$^{-1}$, whereas the H-like profiles are unresolved. From the clean measurement of the He-like triplets, we deduce that the broad lines arise from gas of density $n_{\rm e}\sim10^{11}$ cm$^{-3}$, while the photoionization calculations infer that the emitting gas covers at least 10 percent of $4π$ steradian. Thus the broad soft X-ray profiles appear coincident with an X-ray component of the optical-UV Broad Line Region on sub-pc scales, whereas the narrow profiles originate on larger pc scales, perhaps coincident with the AGN Narrow Line Region. The observations show that Ark 120 is not intrinsically bare and substantial X-ray emitting gas exists out of our direct line of sight towards this AGN.
description: 42 pages, 10 figures, accepted for publication in the Astrophysical Journal
Experimental evidence for the influence of charge on the adsorption capacity of carbon dioxide on charged fullerenes
Creators: name: Ralser, Stefan
name: Kaiser, Alexander
name: Probst, Michael
name: Postler, Johannes
name: Renzler, Michael
name: Bohme, Diethard K.
name: Scheier, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We show, with both experiment and theory, that adsorption of $CO_2$ is sensitive to charge on a capturing model carbonaceous surface. In the experiment we dope superfluid helium droplets with $C_{60}$ and $CO_2$ and expose them to ionising free electrons. Both positively and negatively charged $C_{60}(CO_2)_n^{+/-}$ cluster ion distributions are observed with a high-resolution mass spectrometer and these show remarkable and reproducible anomalies in intensities that are strongly dependent on the charge. The highest adsorption capacity is seen with $C_{60}^+$. Complementary density functional theory calculations and molecular dynamics simulations provided insight into the nature of the interaction of charged $C_{60}$ with $CO_2$ as well as trends in the packing of $C_{60}^+$ and $C_{60}^-$. The quadrupole moment of $CO_2$ itself was seen to be decisive in determining the charge dependence of the observed adsorption features. Our findings are expected to apply to adsorption of $CO_2$ by charged surfaces in general.
Four-gluon scattering at three loops, infrared structure and Regge limit
Creators: name: Henn, Johannes M.
name: Mistlberger, Bernhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the three-loop four-gluon scattering amplitude in maximally supersymmetric Yang-Mills theory, including its full color dependence. Our result is the first complete computation of a non-planar four-particle scattering amplitude to three loops in four-dimensional gauge theory and consequently provides highly non-trivial data for the study of non-planar scattering amplitudes. We present the amplitude as a Laurent expansion in the dimensional regulator to finite order, with coefficients composed of harmonic poly-logarithms of uniform transcendental weight, and simple rational prefactors. Our computation provides an independent check of a recent result for three-loop corrections to the soft anomalous dimension matrix that predicts the general infrared singularity structure of massless gauge theory scattering amplitudes. Taking the Regge limit of our result, we determine the three-loop gluon Regge trajectory. We also find agreement with very recent predictions for sub-leading logarithms.
Parallaxes of 6.7-GHz Methanol Masers towards the G305.2 High-Mass Star Formation Region
Creators: name: Krishnan, V
name: Ellingsen, S P
name: Reid, M J
name: Bignall, H E
name: McCallum, J
name: Phillips, C J
name: Reynolds, C
name: Stevens, J
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have made measurements to determine the parallax and proper motion of the three 6.7-GHz methanol masers G305.200$+$0.019, G305.202$+$0.208 and G305.208$+$0.206. The combined parallax is found to be 0.25$\pm $0.05 mas, corresponding to a distance of 4.1$^{+1.2}_{-0.7}$ kpc. This places the G305.2 star formation region in the Carina-Sagittarius spiral arm. The inclusion of G305.2 increases the Galactic azimuth range of the sources in this arm by 40$^\circ $ from Sato et al., allowing us to determine the pitch angle of this spiral with greater confidence to be $ψ= 19.0 \pm 2.6^\circ $. The first VLBI spot maps of the 6.7-GHz methanol masers towards these sources show that they have simple linear and ring-like structures, consistent with emission expected from classII methanol masers in general.
description: 12 pages, 6 figures and 8 tables
title: Educazione e politica nell’Italia repubblicana
Creators: name: Ridolfi, Maurizio
name: Meta, Chiara
name: Covato, Carmela
Publisher: name: Roma TrE-Press
Year: 2023

description:

Il volume raccoglie, in una versione ampliata, i contributi presentati in occasione del seminario ‘Educazione e politica nell’Italia repubblicana’, svoltosi presso il Dipartimento di Scienze della Formazione Roma Tre, il 12 maggio del 2022. Il volume intende mettere in luce, nel confronto tra storici contemporaneisti e storici dell’educazione, come, nella storia delle complesse vicende che hanno riguardato il sistema formativo italiano dalla ricostruzione  post-bellica in poi, sia stata operante una contraddizione espressa in un dualismo tra    gli ideali di uguaglianza e democrazia sanciti e garantiti dall’entrata in vigore della nuova Carta Repubblicana nel 1948, e il permanere negli apparati amministrativi, nella mentalità ancora assai diffusa nel corpo docente di allora di una concezione ideologica e   politica espressione delle élites borghesi e dei precedenti ceti dirigenti, che animarono l’edificazione dello Stato unitario a partire dal secondo Ottocento. Le questioni indagate da studiosi accreditati ma anche da giovani ricercatori seguono tre traiettare tematiche: categorie, linguaggi e pratiche educative; temi del dibattito; i protagonisti.
Comparative study of microwave radiation-induced magnetoresistive oscillations induced by circularly- and linearly- polarized photo-excitation
Creators: name: Ye, Tianyu
name: Liu, Han-Chun
name: Wang, Zhuo
name: Wegscheider, W.
name: Mani, Ramesh G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A comparative study of the radiation-induced magnetoresistance oscillations in the high mobility GaAs/AlGaAs heterostructure two dimensional electron system (2DES) under linearly- and circularlypolarized microwave excitation indicates a profound difference in the response observed upon rotating the microwave launcher for the two cases, although circularly polarized microwave radiation induced magnetoresistance oscillations observed at low magnetic fields are similar to the oscillations observed with linearly polarized radiation. For the linearly polarized radiation, the magnetoresistive response is a strong sinusoidal function of the launcher rotation (or linear polarization) angle, θ. For circularly polarized radiation, the oscillatory magnetoresistive response is hardly sensitive to θ.
Optimal Quadrature Formulas for the Sobolev Space $H^1$
Creators: name: Novak, Erich
name: Zhang, Shun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65Y20, 42B20, 65D30, 68Q25

description: We study optimal quadrature formulas for arbitrary weighted integrals and integrands from the Sobolev space $H^1([0,1])$. We obtain general formulas for the worst case error depending on the nodes $x_j$. A particular case is the computation of Fourier coefficients, where the oscillatory weight is given by $ρ_k(x) = \exp(- 2 πi k x)$. Here we study the question whether equidistant nodes are optimal or not. We prove that this depends on $n$ and $k$: equidistant nodes are optimal if $n \ge 2.7 |k| +1 $ but might be suboptimal for small $n$. In particular, the equidistant nodes $x_j = j/ |k|$ for $j=0, 1, \dots , |k| = n+1$ are the worst possible nodes and do not give any useful information. To characterize the worst case function we use certain results from the theory of weak solutions of boundary value problems and related quadratic extremal problems.
description: 24 pages, 1 figure, 1 table
Fluctuations of the multiplicity of produced particles in onium-nucleus collisions
Creators: name: Liou, Tseh
name: Mueller, A. H.
name: Munier, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We address the general features of event-by-event fluctuations of the multiplicity of gluons produced in the scattering of a dilute hadron off a large nucleus at high energy in the fragmentation region of the dilute hadron. We relate these fluctuations to the stochasticity of the number of quanta contained in the hadron at the time of the interaction. For simplicity, we address the ideal case in which the hadron is an onium, and investigate different kinematical regimes in rapidity and onium size. We show that at large rapidity, the multiplicity distribution exhibits an exponential tail in the large-multiplicity region, which is qualitatively consistent with the proton-nucleus data. But interestingly enough, the exponential shape is determined by confinement.
description: 21 pages, 4 figures
Rough Set Based Color Channel Selection
Creators: name: Dev, Soumyabrata
name: Savoy, Florian M.
name: Lee, Yee Hui
name: Winkler, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Color channel selection is essential for accurate segmentation of sky and clouds in images obtained from ground-based sky cameras. Most prior works in cloud segmentation use threshold based methods on color channels selected in an ad-hoc manner. In this letter, we propose the use of rough sets for color channel selection in visible-light images. Our proposed approach assesses color channels with respect to their contribution for segmentation, and identifies the most effective ones.
description: Accepted in IEEE Geoscience and Remote Sensing Letters, 2016
The Transform of a line of Desargues Affine Plane in an additive Group of its Points
Creators: name: Zaka, Orgest
name: Filipi, Kristaq
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: In this paper we present a set transformation of points in a line of the Desargues affine plane in a additive group. For this, the first stop on the meaning of the Desargues affine plane, formulating first axiom of his that show proposition D1. Afterwards we show that little Pappus theorem, which we use in the construction of group proofs in additions of points on a line on desargues plane, also applies in the Desargues affine plane.
description: http://www.journalcra.com/article/transform-line-desargues-affine-plane-additive-group-its-points
The Hardy's nonlocality argument
Creators: name: Choudhary, Sujit K
name: Agrawal, Pankaj
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Certain predictions of quantum theory are not compatible with the notion of local-realism. This was the content of Bell's famous theorem of the year 1964. Bell proved this with the help of an inequality, famously known as Bell's inequality. The alternative proofs of Bell's theorem without using Bell's inequality are known as `nonlocality without inequality (NLWI)' proofs. We, review one such proof, namely the Hardy's proof which due to its simplicity and generality has been considered the best version of Bell's theorem.
description: arXiv admin note: text overlap with arXiv:1408.0526 by other authors
Timing the warm absorber in NGC 4051
Creators: name: Silva, Catia
name: Uttley, Phil
name: Costantini, Elisa
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigated, using spectral-timing analysis, the characterization of highly ionized outflows in Seyfert galaxies, the so-called warm absorbers. Here, we present our results on the extensive ~ 600 ks of XMM-Newton archival observations of the bright and highly variable Seyfert 1 galaxy NGC 4051, whose spectrum has revealed a complex multicomponent wind. Making use of both RGS and EPIC-pn data, we performed a detailed analysis through a time-dependent photoionization code in combination with spectral and Fourier spectral-timing techniques. The source light curves and the warm absorber parameters obtained from the data were used to simulate the response of the gas due to variations in the ionizing flux of the central source. The resulting time variable spectra were employed to predict the effects of the warm absorber on the time lags and coherence of the energy dependent light curves. We have found that, in the absence of any other lag mechanisms, a warm absorber with the characteristics of the one observed in NGC 4051, is able to produce soft lags, up to 100 s, on timescales of ~ hours. The time delay is associated with the response of the gas to changes in the ionizing source, either by photoionization or radiative recombination, which is dependent on its density. The range of radial distances that, under our assumptions, yield longer time delays are comparable to the existing estimates of the location of the warm absorber in NGC 4051. For this reason, we suggest that it is likely that the observed X-ray time lags may carry a signature of the warm absorber response time, to changes in the ionizing continuum. These results highlight the importance of understanding the contribution of the warm absorber to the AGN X-ray time lags, since it is also vital information for interpreting the lags associated with propagation and reverberation effects in the inner emitting regions.
description: 13 pages, 12 figures, Accepted for publication by A&A
(Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies IV. Physical properties derived from spectral energy distributions
Creators: name: Miettinen, Oskari
name: Delvecchio, Ivan
name: Smolčić, Vernesa
name: Novak, Mladen
name: Aravena, Manuel
name: Karim, Alexander
name: Murphy, Eric J.
name: Schinnerer, Eva
name: Capak, Peter
name: Ilbert, Olivier
name: Intema, Huib T.
name: Laigle, Clotilde
name: McCracken, Henry J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We characterise the physical nature of a 1.1 mm-selected, flux-limited, and interferometrically followed up sample of SMGs in COSMOS. We used the MAGPHYS code to fit the multiwavelength (UV-radio) SEDs of 16 of the target SMGs. We also constructed the pure radio SEDs of our SMGs using three different radio bands (325 MHz, 1.4 GHz, and 3 GHz). Moreover, since two SMGs in our sample, AzTEC1 and AzTEC3, benefit from previous CO line observations, we studied their properties in more detail. We found that 63% of our target SMGs lie above the galaxy main-sequence by more than a factor of 3, and hence are starbursts. The 3 GHz radio sizes we have previously measured for the target SMGs were compared with the present stellar mass estimates, and we found that the z>3 SMGs are fairly consistent with the mass-size relationship of z~2 compact, quiescent galaxies (cQGs). The median IR-radio correlation parameter is found to be q=2.27, which is lower than measured locally (median q=2.64). AzTEC1 is found to have a sub-Eddington SFR surface density (by a factor of 2.6), while AzTEC3 appears to be an Eddington-limited starburster. The gas reservoir in these two high-z SMGs would be exhausted in only ~86 and 19 Myr at the current SFR, respectively. A comparison of the MAGPHYS-based properties of our SMGs with those of equally bright ALESS SMGs suggests that the two populations share fairly similar physical characteristics, including the q parameter. A hint of negative correlation is found between the 3 GHz size and the level of starburstiness, and hence cosmic-ray electrons in more compact starbursts might be more susceptible to free-free absorption. Some of the derived low and high q values (compared to the local median) could be the result of a specific merger/post-starburst phase of galaxy evolution. Overall, our results support the scenario where z>3 SMGs evolve into today's giant ellipticals.
description: 26 pages (incl. 4 appendices), 13 figures, 8 tables; accepted for publication in A&A; abstract abridged for arXiv
Convective dynamo action in a spherical shell: symmetries and modulation
Creators: name: Raynaud, Raphaël
name: Tobias, Steven M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider dynamo action driven by three-dimensional rotating anelastic convection in a spherical shell. Motivated by the behaviour of the solar dynamo, we examine the interaction of hydromagnetic modes with different symmetries and demonstrate how complicated interactions between convection, differential rotation and magnetic fields may lead to modulation of the basic cycle. For some parameters, Type 1 modulation occurs by the transfer of energy between modes of different symmetries with little change in the overall amplitude, for other parameters, the modulation is of Type 2, where the amplitude is significantly affected (leading to grand minima in activity) without significant changes in symmetry. Most importantly, we identify the presence of "supermodulation" in the solutions, where the activity switches chaotically between Type 1 and Type 2 modulation, this is believed to be an important process in solar activity.
description: 12 pages
Generation of circular polarization of gamma ray bursts
Creators: name: Batebi, S.
name: Mohammadi, R.
name: Ruffini, R.
name: Tizchang, S.
name: Xue, S. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The generation of the circular polarization of Gamma Ray Burst (GRB) photons is discussed in this paper via their interactions with astroparticles in the presence or absence of background fields such as magnetic fields and non-commutative space time geometry. Solving quantum Boltzmann equation for GRB-photons as a photon ensemble, we discuss the generation of circular polarization (as Faraday conversion phase shift $Δϕ_{FC}$) of GRBs in the following cases: (i) intermediate interactions, i.e. the Compton scattering of GRBs in the galaxy cluster magnetic field and in the presence of non-commutative space time geometry, as well as the scattering of GRBs in cosmic neutrino background (CNB), and in cosmic microwave background (CMB); (ii) interactions with particles and fields in shock wave, i.e. the Compton scattering of GRBs with accelerated charged particles in the presence of magnetic fields. We found that (i) after shock wave crossing, the most contribution of $Δϕ_{FC}$ for energetic GRBs (in order GeV and larger) comes from GRB-CMB interactions, however for low energy GRBs the contributions of the Compton scattering of GRBs in the galaxy cluster magnetic field dominate; (ii) in shock wave crossing, the magnetic filed has significant effects on converting GRB's linear polarization to circular one, this effect can be used to better understanding magnetic profile in shock wave. The main aim of this work is a emphasis that the studying and measuring the circular polarization of GRBs are helpful for better understanding of physics and mechanism of the generation of GRBs and their interactions before reaching us.
Follow-up observations of extremely metal-poor stars identified from SDSS
Creators: name: Aguado, D. S.
name: Prieto, C. Allende
name: Hernández, J. I. González
name: Carrera, R.
name: Rebolo, R.
name: Shetrone, M.
name: Lambert, D. L.
name: Fernández-Alvar, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The most metal-poor stars in the Milky Way witnessed the early phases of formation of the Galaxy, and have chemical compositions that are close to the pristine mixture from Big Bang nucleosynthesis, polluted by one or few supernovae. Only two dozen stars with ([Fe/H]< -4) are known, and they show a wide range of abundance patterns. It is therefore important to enlarge this sample. We present the first results of an effort to identify new extremely metal-poor stars in the Milky Way halo. Our targets have been selected from low-resolution spectra obtained as part of the Sloan Digital Sky Survey, and followed-up with medium resolution spectroscopy on the 4.2 m William Herschel Telescope and, in a few cases, at high resolution on the the 9.2 m Hobby-Eberly Telescope. Stellar parameters and the abundances of magnesium, calcium, iron, and strontium have been inferred from the spectra using classical model atmospheres. We have also derived carbon abundances from the G band. We find consistency between the metallicities estimated from SDSS and those from new data at the level of 0.3 dex. The analysis of medium resolution data obtained with ISIS on the WHT allow us to refine the metallicities and in some cases measure other elemental abundances. Our sample contains 11 new metal-poor stars with [Fe/H] < -3.0, one of them with an estimated metallicity of [Fe/H] ~ -4.0. We also discuss metallicity discrepancies of some stars in common with previous works in the literature. Only one of these stars is found to be C-enhanced at about [C/Fe]~+1, whereas the other metal-poor stars show C abundances at the level of [C/Fe]~+0.45.
description: Accepted for publication in A&A
Demazure flags, $q$--Fibonacci polynomials and hypergeometric series
Creators: name: Biswal, Rekha
name: Chari, Vyjayanthi
name: Kus, Deniz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We study a family of finite--dimensional representations of the hyperspecial parabolic subalgebra of the twisted affine Lie algebra of type $\tt A_2^{(2)}$. We prove that these modules admit a decreasing filtration whose sections are isomorphic to stable Demazure modules in an integrable highest weight module of sufficiently large level. In particular, we show that any stable level $m'$ Demazure module admits a filtration by level $m$ Demazure modules for all $m\ge m'$. We define the graded and weighted generating functions which encode the multiplicity of a given Demazure module and establish a recursive formulae. In the case when $m'=1,2$ and $m=2,3$ we determine these generating functions completely and show that they define hypergeoemetric series and that they are related to the $q$--Fibonacci polynomials defined by Carlitz.
title: Quantitative Phase Imaging Using Digital Holographic Microscopy to Assess the Degree of Intestinal Inflammation in Patients with Ulcerative Colitis
Creators: name: Bokemeyer, Arne
name: Buskermolen, Joost
name: Ketelhut, Steffi
name: Tepasse, Phil-Robin
name: Vollenberg, Richard
name: Trebicka, Jonel
name: Schmidt, Hartmut
name: Vieth, Michael
name: Bettenworth, Dominik
name: Kemper, Björn
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 610 Medicine and health

description: Ulcerative colitis (UC) is characterized by chronic inflammation of the colorectum. Histological remission has emerged as a potential future treatment goal; however, the histopathological assessment of intestinal inflammation in UC remains challenging with a multitude of available scoring systems and the need for a pathologist with expertise in inflammatory bowel disease (IBD). In previous studies, quantitative phase imaging (QPI) including digital holographic microscopy (DHM) was successfully applied as an objective method for stain-free quantification of the degree of inflammation in tissue sections. Here, we evaluated the application of DHM for the quantitative assessment of histopathological inflammation in patients with UC. In our study, endoscopically obtained colonic and rectal mucosal biopsy samples from 21 patients with UC were analyzed by capturing DHM-based QPI images that were subsequently evaluated using the subepithelial refractive index (RI). The retrieved RI data were correlated with established histological scoring systems including the Nancy index (NI) as well as with endoscopic and clinical findings. As a primary endpoint, we found a significant correlation between the DHM-based retrieved RI and the NI (R2 = 0.251, p < 0.001). Furthermore, RI values correlated with the Mayo endoscopic subscore (MES; R2 = 0.176, p < 0.001). An area under the receiver operating characteristics (ROC) curve of 0.820 confirms the subepithelial RI as a reliable parameter to distinguish biopsies with histologically active UC from biopsies without evidence of active disease as determined by conventional histopathological examination. An RI higher than 1.3488 was found to be the most sensitive and specific cut-off value to identify histologically active UC (sensitivity of 84% and specificity of 72%). In conclusion, our data demonstrate DHM to be a reliable tool for the quantitative assessment of mucosal inflammation in patients with UC.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Boletin Electrónico de lengua, literatura y educación.  No1.V.1.julio-septiembre_2023
Creators: name: Varona, Repositorio Español y Literatura
name: Almeida Martínez, David
name: María Morales Aleo, Dulce
name: Acosta Izquierdo, Tomasa Caridad
name: Moreno Monnar, Marco Antonio
name: Toledo Costa, Alicia
name: Puig González, Daniela
Publisher: name: figshare
Year: 2023
Subjects: Applied linguistics and educational linguistics

description: Este número contiene las secciones, Artículo científico, Promolibros, Galería, Humano, Duda.online, Fe de errata y un Calendario cultural. El primer artículo es una reflexión crítica sobre lo erótico en la fotografía, y el segundo un acercamiento a la fundación de la cátedra ¨Patrimonio Universitario¨ y su labor por la preservación del patrimonio con que cuenta nuestra universidad. En Promolibros te ofrecemos razones para leer una antología de cuentos de la escritora Samanta Schweblin. En Fe de errata nos referimos a la supuesta autoría de Lord Byron de una de sus frases más célebres. En duda.online los especialistas dan respuesta a algunas de las preguntas que nos hicieron llegar los lectores vía Telegram. La sección Humano, con una doble aparición en este número, la primera dedicada a la muy querida y destacada profesora Dra.C. Ileana Domínguez García, Presidenta Nacional de la Carrera de Licenciatura en Educación Español-Literatura, donde expone con toda transparencia un recorrido panorámico por sus más de cincuenta años de trabajo y nos invita a reflexionar sobre el poder de la palabra. También en la sección Humano contamos con una entrevista al fundador del Boletín, Dr.C. Oriniel Martínez Ibarra quien mira hacía atrás en el tiempo para recordarnos su experiencias como director y editor y nos comenta sus actuales y futuros proyectos.
Community aquatic therapy for Parkinson’s disease: an international qualitative study
Creators: name: Carroll, Louise M.
name: Morris, Meg. E.
name: O'Connor, William T.
name: Clifford, Amanda M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: To explore the opinions of people living with Parkinson’s disease about access to and participation in community aquatic therapy. Focus groups and individual interviews were conducted with people living with Parkinson’s disease in Ireland (n = 24) and Australia (n = 10). All discussions were audio-recorded, transcribed verbatim, and thematically analysed. Four main themes were identified. Primarily, participants were optimistic about their reasons for choosing aquatic therapy and found it beneficial to their health and well-being. Optimal components of aquatic therapy identified were access to individually tailored aquatic programs, completed as a minimum once a week, at a moderate to high-intensity level, and guided by a credentialed instructor. Fear was a significant barrier for a small proportion of participants and was linked to water competence, past experiences, and fall risk associated with the aquatic environment. Participants identified a strong need for education and increased awareness about aquatic therapy benefits to promote greater engagement. Aquatic therapy is a popular exercise choice for people with Parkinson’s disease, especially in the early to middle disease stages. Considering the views of people living with Parkinson’s disease can aid the design and implementation of interventions and future aquatic research internationally.Implications for RehabilitationAquatic therapy is emerging as an effective physiotherapy approach for managing motor and non-motor symptoms in Parkinson’s disease.Little is known regarding community-based aquatic therapy programs from the perspectives of people living with Parkinson’s disease internationally.People with Parkinson’s disease may benefit from timely information about the unique benefits, prerequisites, and local aquatic therapy facilities to promote greater uptake of aquatic programs.Tailored aquatic therapy interventions delivered within a group setting by a credentialed healthcare professional may increase long-term adherence. Aquatic therapy is emerging as an effective physiotherapy approach for managing motor and non-motor symptoms in Parkinson’s disease. Little is known regarding community-based aquatic therapy programs from the perspectives of people living with Parkinson’s disease internationally. People with Parkinson’s disease may benefit from timely information about the unique benefits, prerequisites, and local aquatic therapy facilities to promote greater uptake of aquatic programs. Tailored aquatic therapy interventions delivered within a group setting by a credentialed healthcare professional may increase long-term adherence.
The utility of the International Classification of Functioning construct as a statistical tool – operationalizing mental health as an indicator of adolescent participation
Creators: name: Augustine, Lilly
name: Lygnegård, Frida
name: Adolfsson, Margareta
name: Granlund, Mats
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The ICF provides a common scientific language for the study of health and functioning. Adolescent mental health, operationalized as engagement in life situations, is one aspect of functioning. Engagement as mental health has a bi-directional relation with environmental factors. To test the statistical utility of the International Classification of Functioning (ICF) classification in coding adolescent mental health and mental health problems. Using data measuring mental health in a representative Swedish sample of 12–13-year-olds linking responses to the classification codes. The internal structure of the classification system constructs was tested using factor analysis. A factorial solution could be found for most chapters indicating that the ICF framework and coding system could be used; however, the variance explained was quite low. Linking worked better at code-level, rather than chapter level. Items measuring risk behavior or risk factors are loaded in separate constructs. When coding items for statistical purposes, code-level rather than chapter level is to be preferred. Also, participation in risk behavior loads in separate factors indicating that these behaviors are separate from other types of participation.Implications for rehabilitationConsidering some challenges with varying level of detail in the ICF-CY’s chapters, the framework can be used to identify the content of mental health questionnaires to be used in rehabilitation.To provide more detailed information in rehabilitation addressing mental health, a code-level solution is more appropriate than a chapter level solution.Despite the use of same ICF-CY codes, negative participation, i.e., risk behavior, measures a different dimension than positive participation, is especially relevant in rehabilitation addressing mental health. Considering some challenges with varying level of detail in the ICF-CY’s chapters, the framework can be used to identify the content of mental health questionnaires to be used in rehabilitation. To provide more detailed information in rehabilitation addressing mental health, a code-level solution is more appropriate than a chapter level solution. Despite the use of same ICF-CY codes, negative participation, i.e., risk behavior, measures a different dimension than positive participation, is especially relevant in rehabilitation addressing mental health.
Prevalence, types, and combinations of multiple problems among recipients of work disability benefits
Creators: name: Brongers, Kor A.
name: Hoekstra, Tialda
name: Roelofs, Pepijn D. D. M.
name: Brouwer, Sandra
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: For persons on disability benefits who are facing multiple problems, active labour market policies seem less successful. Besides health problems, these people perceive personal, social, and environmental problems. Since very little is known about these “non-medical” problems our aim was to explore the prevalence of clients experiencing multiple problems, the types and number of perceived problems, combinations of perceived problems, and associated characteristics in a group of work disability benefit recipients. We performed a cross-sectional study, using self-reported data on perceived problems and socio-demographics, and register data from the Dutch Social Security Institute on diagnosed diseases and employment status. A convenient group of labour experts recruited eligible clients on work disability benefit. Of the 207 persons on work disability benefit, 87% perceived having multiple problems. Most reported problems were related to physical (76%) or mental (76%) health. Health problems most frequently occurred together with a mismatch in education, financial problems, or care for family members. Clients with lower education experienced significantly more problems than clients with an intermediate or high educational level. Clients with multiple problems face severe and intertwined problems in different domains of life, and need tailored multi-actor work disability management.Implications for rehabilitationClients with multiple problems face severe and intertwined problems in different domains of life; therefore, interventions tailored to deal with needs related to specific problems might be more effective than traditional programs.Interventions should match experienced barriers, and involve multi-actor work disability management with all the challenges of mutual cooperation.For persons with multiple problems a focus on pure medical barriers is too narrow, because personal, social, and environmental factors might also obstruct participation in work. Clients with multiple problems face severe and intertwined problems in different domains of life; therefore, interventions tailored to deal with needs related to specific problems might be more effective than traditional programs. Interventions should match experienced barriers, and involve multi-actor work disability management with all the challenges of mutual cooperation. For persons with multiple problems a focus on pure medical barriers is too narrow, because personal, social, and environmental factors might also obstruct participation in work.