cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Amplification and Scintillation Properties of Oxygen-Rich Gas Mixtures for Optical-TPC Applications
Creators: name: Weissman, L.
name: Gai, M.
name: Breskin, A.
name: Chechik, R.
name: Dangendorf, V.
name: Tittelmeier, K.
name: Weller, H. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We studied electron amplification and light emission from avalanches in oxygen-containing gas mixtures. The mixtures investigated in this work included, among others, CO2 and N2O mixed with Triethylamine (TEA) or N2. Double-Step Parallel Gap (DSPG) multipliers and THick Gas Electron Multipliers (THGEM) were investigated. High light yields were measured from CO2+N2 and CO2+TEA, though with different emission spectra. We observed the characteristic wave-length emission of N2 and of TEA and used a polymer wave-length shifter to convert TEA UV-light into the visible spectrum. The results of these measurements indicate the applicability of optical recording of ionizing tracks in a TPC target-detector designed to study the cross section of the 16O(g,a)12C reaction, a central problem in nuclear astrophysics.
description: Paper published in the new online only Journal of Instrumentation, JINST. Work supported by: USDOE grant Number DE-FG02-94ER40870, the Yale-Weizmann Collaboration, ACWIS, New-York, the Benoziyo Center for High-Energy Research at the Weizmann Institute, the Israel Science Foundation - project 151/01
Optimization of mammography with respect to anatomical noise
Creators: name: Fredenberg, Erik
name: Svensson, Bjorn
name: Danielsson, Mats
name: Lazzari, Barbara
name: Cederstrom, Bjorn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Beam quality optimization in mammography traditionally considers detection of a target obscured by quantum noise on a homogenous background. It can be argued that this scheme does not correspond well to the clinical imaging task because real mammographic images contain a complex superposition of anatomical structures, resulting in anatomical noise that may dominate over quantum noise. Using a newly developed spectral mammography system, we measured the correlation and magnitude of the anatomical noise in a set of mammograms. The results from these measurements were used as input to an observer-model optimization that included quantum noise as well as anatomical noise. We found that, within this framework, the detectability of tumors and microcalcifications behaved very differently with respect to beam quality and dose. The results for small microcalcifications were similar to what traditional optimization methods would yield, which is to be expected since quantum noise dominates over anatomical noise at high spatial frequencies. For larger tumors, however, low-frequency anatomical noise was the limiting factor. Because anatomical structure has similar energy dependence as tumor contrast, optimal x-ray energy was significantly higher and the useful energy region wider than traditional methods suggest. Measurements on a tissue phantom confirmed these theoretical results. Furthermore, since quantum noise constitutes only a small fraction of the noise, the dose could be reduced substantially without sacrificing tumor detectability. Exposure settings used clinically are therefore not necessarily optimal for this imaging task. The impact of these findings on the mammographic imaging task as a whole is, however, at this stage unclear.
Faraday instability in a two-component Bose Einstein condensate
Creators: name: Bhattacherjee, Aranya B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Motivated by recent experiments on Faraday waves in Bose Einstein condensates (BEC) we investigate the dynamics of two component cigar shaped BEC subject to periodic modulation of the strength of the transverse confinement. It is shown that two coupled Mathieu equations govern the dynamics of the system. We found that the two component BEC in a phase mixed state is relatively more unstable towards pattern formation than the phase segregated state.
description: 6 pages, 4 figures
Quantum oscillations in the activated conductivity in excitonic insulators: possible application to monolayer WTe2
Creators: name: Lee, Patrick A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A recent paper on the insulating state of monolayer WTe2 reported the observation of large oscillations in the conductivity that are periodic in 1/B, resembling quantum oscillations in metals. This remarkable observation has inspired suggestions of exotic physics such as spin-charge separation. We show that a rather more conventional but still nontrivial explanation in terms of gap modulation may be possible in a model of excitonic insulator subject to a magnetic field.
Exact Solutions of a Remarkable Fin Equation
Creators: name: Popovych, R. O.
name: Sophocleous, C.
name: Vaneeva, O. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 58J70; 35K57; 35C05; 35A30

description: A model "remarkable" fin equation is singled out from a class of nonlinear (1+1)-dimensional fin equations. For this equation a number of exact solutions are constructed by means of using both classical Lie algorithm and different modern techniques (functional separation of variables, generalized conditional symmetries, hidden symmetries etc).
description: 6 pages
Experiences of nurses and midwives with disabilities: A scoping review
Creators: name: Baker, Christine
name: Malik, Gulzar
name: Davis, Jennifer
name: McKenna, Lisa
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4204
subject: Midwifery
classificationCode: 4205
subject: Nursing
subject: FOS: Health sciences

description: Aim: To identify the extent and type of evidence exploring the workplace experiences of nurses and midwives with disabilities. Design: Scoping Review. Data Sources: Four electronic databases were systematically searched in February 2022 to identify studies discussing the experiences of nurses and midwives with disabilities, published between 2012 and 2022. Google Scholar and Theses Global were also searched. Review Methods: All search results, irrespective of their format, were uploaded to Covidence to assist with the selection of evidence. Studies discussing the experiences of nurses and midwives with disabilities were included. Two reviewers conducted screening and data extraction independently, and a third reviewer resolved conflicts. Results: Searches identified 130 studies. After screening for title and abstract, full-text review identified 23 studies for data extraction and analysis. Data were summarized and presented in tabular form under two categories (1) workplace experiences and (2) impact in the workplace. Results were presented in a descriptive, narrative form with accompanying tables. Conclusion: The nurse or midwife can be impacted significantly by disability. Currently, little is known about the workplace experiences of nurses and midwives with disabilities. Therefore, a better understanding of the experiences of the nurse and midwives with disabilities is important to increase diversity, equity, accessibility, and inclusion. Impact: Shortage of nurses and midwives worldwide highlights the need to understand why nurses and midwives with disabilities decide to leave the profession. Further research exploring the experiences of nurses or midwives with disabilities will help identify support requirements, develop frameworks for reasonable adjustment accommodations, and assist with future workforce planning.
UV Dust Attenuation in Star-forming Galaxies: II Calibrating the A(UV) vs. L_TIR/L_UV relation
Creators: name: Cortese, L.
name: Boselli, A.
name: Franzetti, P.
name: Decarli, R.
name: Gavazzi, G.
name: Boissier, S.
name: Buat, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the dependence of the total-infrared (TIR) to UV luminosity ratio method for calculating the UV dust attenuation A(UV) from the age of the underlying stellar populations by using a library of spectral energy distributions for galaxies with different star formation histories. Our analysis confirms that the TIR/UV vs. A(UV) relation varies significantly with the age of the underlying stellar population: i.e. for the same TIR/UV ratio, systems with low specific star formation rate (SSFR) suffer a lower UV attenuation than starbursts. Using a sample of nearby field and cluster spiral galaxies we show that the use of a standard (i.e. age independent) TIR/UV vs. A(UV) relation leads to a systematic overestimate up to 2 magnitudes of the amount of UV dust attenuation suffered by objects with low SSFR and in particular HI-deficient star forming cluster galaxies. This result points out that the age independent $TIR/UV$ vs. $A(UV)$ relation cannot be used to study the UV properties of large samples of galaxies including low star-forming systems and passive spirals. Therefore we give some simple empirical relations from which the UV attenuation can be estimated taking into account its dependence on the age of the stellar populations, providing a less biased view of UV properties of galaxies.
description: 16 pages, 10 figures, 6 tables. Accepted for publication on MNRAS main journal. High resolution version and tables also available at http://www.astro.cf.ac.uk/pub/Luca.Cortese/UVattenuation.html
Sustaining Star Formation in the Galactic Star Cluster M 36?
Creators: name: Panja, Alik
name: Chen, Wen Ping
name: Dutta, Somnath
name: Sun, Yan
name: Gao, Yu
name: Mondal, Soumen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present comprehensive characterization of the Galactic open cluster M 36. Some two hundred member candidates, with an estimated contamination rate of $\sim$8%, have been identified on the basis of proper motion and parallax measured by the $Gaia$ DR2. The cluster has a proper motion grouping around ($μ_α \cosδ= -$0.15 $\pm$ 0.01 mas yr$^{-1}$, and $μ_δ = -$3.35 $\pm$ 0.02 mas yr$^{-1}$), distinctly separated from the field population. Most member candidates have parallax values 0.7$-$0.9 mas, with a median value of 0.82 $\pm$ 0.07 mas (distance $\sim$1.20 $\pm$ 0.13 kpc). The angular diameter of 27$'$ $\pm$ $0\farcm4$ determined from the radial density profile then corresponds to a linear extent of 9.42 $\pm$ 0.14 pc. With an estimated age of $\sim$15 Myr, M 36 is free of nebulosity. To the south-west of the cluster, we discover a highly obscured ($A_{V}$ up to $\sim$23 mag), compact ($\sim$ $1\farcm9 \times 1\farcm2$) dense cloud, within which three young stellar objects in their infancy (ages $\lesssim$ 0.2 Myr) are identified. The molecular gas, 3.6 pc in extent, contains a total mass of (2$-$3)$\times$10$^{2}$ M$_{\odot}$, and has a uniform velocity continuity across the cloud, with a velocity range of $-$20 to $-$22 km s$^{-1}$, consistent with the radial velocities of known star members. In addition, the cloud has a derived kinematic distance marginally in agreement with that of the star cluster. If physical association between M 36 and the young stellar population can be unambiguously established, this manifests a convincing example of prolonged star formation activity spanning up to tens of Myrs in molecular clouds.
description: 24 pages, 14 figures, 4 tables
Can the unresolved X-ray background be explained by emission from the optically-detected faint galaxies of the GOODS project?
Creators: name: Worsley, M. A.
name: Fabian, A. C.
name: Bauer, F. E.
name: Alexander, D. M.
name: Brandt, W. N.
name: Lehmer, B. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The emission from individual X-ray sources in the Chandra Deep Fields and XMM-Newton Lockman Hole shows that almost half of the hard X-ray background above 6 keV is unresolved and implies the existence of a missing population of heavily obscured active galactic nuclei (AGN). We have stacked the 0.5-8 keV X-ray emission from optical sources in the Great Observatories Origins Deep Survey (GOODS; which covers the Chandra Deep Fields) to determine whether these galaxies, which are individually undetected in X-rays, are hosting the hypothesised missing AGN. In the 0.5-6 keV energy range the stacked-source emission corresponds to the remaining 10-20 per cent of the total background -- the fraction that has not been resolved by Chandra. The spectrum of the stacked emission is consistent with starburst activity or weak AGN emission. In the 6-8 keV band, we find that upper limits to the stacked X-ray intensity from the GOODS galaxies are consistent with the ~40 per cent of the total background that remains unresolved, but further selection refinement is required to identify the X-ray sources and confirm their contribution.
description: 7 pages, 1 figure, accepted for publication in MNRAS
$J/ψ$ production in Au+Au/Cu+Cu collisions at $\sqrt{s}_{NN}$=200 GeV and the threshold model
Creators: name: Chaudhuri, A. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using the QGP motivated threshold model, where all the $J/ψ$'s are suppressed above a threshold density, we have analyzed the preliminary PHENIX data on the centrality dependence of nuclear modification factor for $J/ψ$'s in Cu+Cu and in Au+Au collisions, at RHIC energy, $\sqrt{s}_{NN}$=200 GeV. Centrality dependence of $J/ψ$ suppression in Au+Au collisions are well explained in the model for threshold densities in ranges of 3.6-3.7 $fm^{-2}$. $J/ψ$ suppression in Cu+Cu collisions on the other hand are not explained in the model.
description: 6 pages, 5 figures
Uniqueness of Hahn-Banach extension and related norm-$1$ projections in dual spaces
Creators: name: Daptari, Soumitra
name: Paul, Tanmoy
name: Rao, T. S. S. R. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 46A22, 46B20, Secondary 46B22, 46M05

description: In this paper we study two properties viz. property-$U$ and property-$SU$ of a subspace $Y$ of a Banach space which correspond to the uniqueness of the Hahn-Banach extension of each linear functional in $Y^*$ and in addition to that this association forms a linear operator of norm-1 from $Y^*$ to $X^*$. It is proved that, under certain geometric assumptions on $X, Y, Z$ these properties are stable with respect to the injective tensor product; $Y$ has property-$U$ ($SU$) in $Z$ if and only if $X\otimes_\e^\vee Y$ has property-$U$ ($SU$) in $X\otimes_\e^\vee Z$. We prove that when $X^*$ has the Radon-Nikod$\acute{y}$m Property for $13$ is a Hilbert space if and only if for any two subspaces $Y, Z$ with property-$SU$ in $X$, $Y+Z$ has property-$SU$ in $X$ whenever $Y+Z$ is closed. We characterize all hyperplanes in $c_0$ which have property-$SU$.
Possible observation of the signature of the bad metal phase and its crossover to a Fermi liquid in K(BEDT-TTF)2Cu(NCS)2 bulk and nanoparticles by Raman scattering
Creators: name: Beaumont, M. Revelli
name: Hemme, P.
name: Gallais, Y.
name: Sacuto, A.
name: Jacob, K.
name: Valade, L.
name: de Caro, D.
name: Faulmann, C.
name: Cazayous, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: K(BEDT-TTF)2Cu(NCS)2 has been investigated by Raman scattering in both bulk and nanoparticle compounds. Phonon modes from 20 to 1600 cm-1 have been assigned. Focusing on the unexplored low frequency phonons, a plateau in frequencies is observed in the bulk phonons between 50 and 100 K and assigned to the signature of the bad metal phase. Nanoparticles of K(BEDT-TTF)2Cu(NCS)2 exhibit anomalies at 50 K associated to the crossover from a bad metal to a Fermi liquid whose origins are discussed.
Lagrangian reduction of nonholonomic discrete mechanical systems by stages
Creators: name: Fernandez, Javier
name: Tori, Cora
name: Zuccalli, Marcela
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37J15, 70G45 (Primary), 70G75 (Secondary)

description: In this work we introduce a category $LDP_d$ of discrete-time dynamical systems, that we call discrete Lagrange--D'Alembert--Poincaré systems, and study some of its elementary properties. Examples of objects of $LDP_d$ are nonholonomic discrete mechanical systems as well as their lagrangian reductions and, also, discrete Lagrange-Poincaré systems. We also introduce a notion of symmetry group for objects of $LDP_d$ and a process of reduction when symmetries are present. This reduction process extends the reduction process of discrete Lagrange--Poincaré systems as well as the one defined for nonholonomic discrete mechanical systems. In addition, we prove that, under some conditions, the two-stage reduction process (first by a closed and normal subgroup of the symmetry group and, then, by the residual symmetry group) produces a system that is isomorphic in $LDP_d$ to the system obtained by a one-stage reduction by the full symmetry group.
Quantum deformations of associative algebras and integrable systems
Creators: name: Konopelchenko, B. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Rings and Algebras (math.RA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Quantum deformations of the structure constants for a class of associative noncommutative algebras are studied. It is shown that these deformations are governed by the quantum central systems which has a geometrical meaning of vanishing Riemann curvature tensor for Christoffel symbols identified with the structure constants. A subclass of isoassociative quantum deformations is described by the oriented associativity equation and, in particular, by the WDVV equation. It is demonstrated that a wider class of weakly (non)associative quantum deformations is connected with the integrable soliton equations too. In particular, such deformations for the three-dimensional and infinite-dimensional algebras are described by the Boussinesq equation and KP hierarchy, respectively.
description: Numeration of the formulas is corrected
The effects of noise and low-pass filtering on the perception of tones and consonants in Mandarin
Creators: name: Dunlop, Krista M.
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of the present study was to investigate how low-pass filtering and background noise affect the perception of Mandarin tones and initial consonants. Ten subjects (all native Mandarin speakers) listened to Mandarin syllables in varying conditions of background noise and filtering and were forced to guess at which consonant or tone was presented. It was found that low-pass filtering had no effect on the perception of tone, although significant main effects of background noise and tone presented were found and a significant interaction of background noise and tone was found in the perception of Mandarin tones. Low-pass filtering, background noise and tone were all found to have a significant effect on consonant perception, and significant interactions were found between background noise and filtering and between background noise and tone in the perception of Mandarin initial consonants. An investigation of the articulatory features of Mandarin consonants demonstrated that background noise and low-pass filtering have little effect on the amount of information transmitted by the features of voicing, nasality and aspiration, whereas they both have a negative effect on the amount of information transmitted by the features of manner of articulation and place of articulation.
The Hubble PanCET Program: A Metal-rich Atmosphere for the Inflated Hot Jupiter HAT-P-41b
Creators: name: Sheppard, Kyle B.
name: Welbanks, Luis
name: Mandell, Avi
name: Madhusudhan, Nikku
name: Nikolov, Nikolay
name: Deming, Drake
name: Henry, Gregory W.
name: Williamson, Michael H.
name: Sing, David K.
name: López-Morales, Mercedes
name: Ih, Jegug
name: Sanz-Forcada, Jorge
name: Lavvas, Panayotis
name: Ballester, Gilda E.
name: Evans, Thomas M.
name: Muñoz, Antonio García
name: Santos, Leonardo A. Dos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a comprehensive analysis of the 0.3--5\,$μ$m transit spectrum for the inflated hot Jupiter HAT-P-41b. The planet was observed in transit with Hubble STIS and WFC3 as part of the Hubble Panchromatic Comparative Exoplanet Treasury (PanCET) program, and we combine those data with warm \textit{Spitzer} transit observations. We extract transit depths from each of the data sets, presenting the STIS transit spectrum (0.29--0.93\,$μ$m) for the first time. We retrieve the transit spectrum both with a free-chemistry retrieval suite (AURA) and a complementary chemical equilibrium retrieval suite (PLATON) to constrain the atmospheric properties at the day-night terminator. Both methods provide an excellent fit to the observed spectrum. Both AURA and PLATON retrieve a metal-rich atmosphere for almost all model assumptions (most likely O/H ratio of $\log_{10}{Z/Z_{\odot}} = 1.46^{+0.53}_{-0.68}$ and $\log_{10}{Z/Z_{\odot}} = 2.33^{+0.23}_{-0.25}$, respectively); this is driven by a 4.9-$σ$ detection of H$_2$O as well as evidence of gas absorption in the optical ($>$2.7-$σ$ detection) due to Na, AlO and/or VO/TiO, though no individual species is strongly detected. Both retrievals determine the transit spectrum to be consistent with a clear atmosphere, with no evidence of haze or high-altitude clouds. Interior modeling constraints on the maximum atmospheric metallicity ($\log_{10}{Z/Z_{\odot}} < 1.7$) favor the AURA results. The inferred elemental oxygen abundance suggests that HAT-P-41b has one of the most metal-rich atmospheres of any hot Jupiters known to date. Overall, the inferred high metallicity and high inflation make HAT-P-41b an interesting test case for planet formation theories.
description: Resubmitted to AAS Journals after revisions
Classification by girth of three-dimensional algebraically defined monomial graphs over the real numbers
Creators: name: Kodess, Alex
name: Kronenthal, Brian G.
name: Manzano-Ruiz, Diego
name: Noe, Ethan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05Cxx

description: For positive integers $s,t,u,v$, we define a bipartite graph $Γ_{\mathbb{R}}(X^s Y^t,X^u Y^v)$ where each partite set is a copy of $\mathbb{R}^3$, and a vertex $(a_1,a_2,a_3)$ in the first partite set is adjacent to a vertex $[x_1,x_2,x_3]$ in the second partite set if and only if \[ a_2 + x_2 = a_1^s x_1^t \quad \text{and} \quad a_3+x_3=a_1^ux_1^v. \] In this paper, we classify all such graphs according to girth.
description: 8 pages
Ferromagnetic Wires Composite Media with Tunable Scattering Spectra at Microwaves
Creators: name: Makhnovskiy, D. P.
name: Panina, L. V.
name: Garcia, C.
name: Zhukov, A. P.
name: Gonzalez, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We demonstrate composite media with ferromagnetic wires that exhibit a frequency region at the microwave regime with scattering spectra strongly dependent on an external magnetic field or stress. These tunable composite materials have recently been proposed theoretically; however, no direct experimental verification has been reported. We used composite materials with predominantly oriented CoFeCrSiB glass-coated amorphous wires having large magnetoimpedance at GHz frequencies. The free space measurements of reflection and transmission coefficients were conducted in the frequency range 1-8 GHz in the presence of an external static magnetic field or stress applied to the whole sample. In general, the transmission spectra show greater changes in the range of 10dB for a relatively small magnetic field of few Oe or stress of 0.1 MPa. The obtained results are quantitatively consistent with the analytical expressions predicted by the effective medium arguments. The incident electromagnetic wave induces an electrical dipole moment in each wire, the aggregate of which forms the effective dipole response of the whole composite structure in the radiative near or far field region. The field and stress dependences of the effective response arise from a field or tensile stress sensitivity of the ac surface impedance of a ferromagnetic wire. In the vicinity of the antenna resonance the variations in the magneto-impedance of the wire inclusions result in large changes of the total effective response. A number of applications of proposed materials is discussed including the field tunable microwave surfaces and the self-sensing media for the remote non-destructive evaluation of structural materials.
Cyrtohymena quadrinucleata Foissner 1989
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Hypotrichea
Oxytrichida
Oxytrichidae
Cyrtohymena
Cyrtohymena quadrinucleata

description: Cyrtohymena quadrinucleata (Dragesco & Njiné, 1971) Foissner, 1989
Distribution. MEXICO: Coffee plantation La Onza, near Coatepec (Durán-Ramírez et al. 2015), (Th); Coffee plantation Virginia Armand, near Coatepec (Durán-Ramírez et al. 2015), (Th); Santuario del Bosque de Niebla, near Xalapa (Durán-Ramírez et al. 2015), (Th). VENEZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 10, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma
Creators: name: Batsch, F.
name: Muggli, P.
name: Agnello, R.
name: Ahdida, C. C.
name: Goncalves, M. C. Amoedo
name: Andrebe, Y.
name: Apsimon, O.
name: Apsimon, R.
name: Bachmann, A. -M.
name: Baistrukov, M. A.
name: Blanchard, P.
name: Braunmüller, F.
name: Burrows, P. N.
name: Buttenschön, B.
name: Caldwell, A.
name: Chappell, J.
name: Chevallay, E.
name: Chung, M.
name: Cooke, D. A.
name: Damerau, H.
name: Davut, C.
name: Demeter, G.
name: Deubner, H. L.
name: Doebert, S.
name: Farmer, J.
name: Fasoli, A.
name: Fedosseev, V. N.
name: Fiorito, R.
name: Fonseca, R. A.
name: Friebel, F.
name: Furno, I.
name: Garolfi, L.
name: Gessner, S.
name: Gorgisyan, I.
name: Gorn, A. A.
name: Granados, E.
name: Granetzny, M.
name: Graubner, T.
name: Grulke, O.
name: Gschwendtner, E.
name: Hafych, V.
name: Helm, A.
name: Henderson, J. R.
name: Hüther, M.
name: Kargapolov, I. Yu.
name: Kim, S. -Y.
name: Kraus, F.
name: Krupa, M.
name: Lefevre, T.
name: Liang, L.
name: Liu, S.
name: Lopes, N.
name: Lotov, K. V.
name: Martyanov, M.
name: Mazzoni, S.
name: Godoy, D. Medina
name: Minakov, V. A.
name: Moody, J. T.
name: Moon, K.
name: Guzmán, P. I. Morales
name: Moreira, M.
name: Nechaeva, T.
name: Nowak, E.
name: Pakuza, C.
name: Panuganti, H.
name: Pardons, A.
name: Perera, A.
name: Pucek, J.
name: Pukhov, A.
name: Ramjiawan, R. L.
name: Rey, S.
name: Rieger, K.
name: Schmitz, O.
name: Senes, E.
name: Silva, L. O.
name: Speroni, R.
name: Spitsyn, R. I.
name: Stollberg, C.
name: Sublet, A.
name: Topaloudis, A.
name: Torrado, N.
name: Tuev, P. V.
name: Turner, M.
name: Velotti, F.
name: Verra, L.
name: Verzilov, V. A.
name: Vieira, J.
name: Vincke, H.
name: Welsch, C. P.
name: Wendt, M.
name: Wing, M.
name: Wiwattananon, P.
name: Wolfenden, J.
name: Woolley, B.
name: Xia, G.
name: Zepp, M.
name: Della Porta, G. Zevi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude ($\ge(4.1\pm0.4)$ MV/m), the phase of the modulation along the bunch is reproducible from event to event, with 3 to 7% (of 2$π$) rms variations all along the bunch. The phase is not reproducible for lower initial amplitudes. We observe the transition between these two regimes. Phase reproducibility is essential for deterministic external injection of particles to be accelerated.
description: Letter and Supplemental Material, 6 figures, 8 pages
In memoriam Professor Dr. Hans-Dieter Döpmann (1929-2012)
Creators: name: Heller, Dagmar
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 62 Nr. 1 (2013): Ökumenische Rundschau, Band 62, Heft 1
Coincidences among skew Schur functions
Creators: name: Reiner, Victor
name: Shaw, Kristin M.
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E05, 20C30

description: New sufficient conditions and necessary conditions are developed for two skew diagrams to give rise to the same skew Schur function. The sufficient conditions come from a variety of new operations related to ribbons (also known as border strips or rim hooks). The necessary conditions relate to the extent of overlap among the rows or among the columns of the skew diagram.
description: 33 pages; fixes incorrect proof of Corollary 6.3 on irreducibility of skew Schur functions associated to connected skew diagrams
Theory of the spatial structure of non-linear lasing modes
Creators: name: Türeci, Hakan E.
name: Stone, A. Douglas
name: Ge, Li
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A self-consistent integral equation is formulated and solved iteratively which determines the steady-state lasing modes of open multi-mode lasers. These modes are naturally decomposed in terms of frequency dependent biorthogonal modes of a linear wave equation and not in terms of resonances of the cold cavity. A one-dimensional cavity laser is analyzed and the lasing mode is found to have non-trivial spatial structure even in the single-mode limit. In the multi-mode regime spatial hole-burning and mode competition is treated exactly. The formalism generalizes to complex, chaotic and random laser media.
description: 4 pages, 3 figures
Reproducibility, Replicability and Beyond: Assessing Production Readiness of Aspect Based Sentiment Analysis in the Wild
Creators: name: Mukherjee, Rajdeep
name: Shetty, Shreyas
name: Chattopadhyay, Subrata
name: Maji, Subhadeep
name: Datta, Samik
name: Goyal, Pawan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.7

description: With the exponential growth of online marketplaces and user-generated content therein, aspect-based sentiment analysis has become more important than ever. In this work, we critically review a representative sample of the models published during the past six years through the lens of a practitioner, with an eye towards deployment in production. First, our rigorous empirical evaluation reveals poor reproducibility: an average 4-5% drop in test accuracy across the sample. Second, to further bolster our confidence in empirical evaluation, we report experiments on two challenging data slices, and observe a consistent 12-55% drop in accuracy. Third, we study the possibility of transfer across domains and observe that as little as 10-25% of the domain-specific training dataset, when used in conjunction with datasets from other domains within the same locale, largely closes the gap between complete cross-domain and complete in-domain predictive performance. Lastly, we open-source two large-scale annotated review corpora from a large e-commerce portal in India in order to aid the study of replicability and transfer, with the hope that it will fuel further growth of the field.
description: 12 pages, accepted at ECIR 2021
Chaotic synchronizations of spatially extended systems as non-equilibrium phase transitions
Creators: name: Cencini, M.
name: Tessone, C. J.
name: Torcini, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Two replicas of spatially extended chaotic systems synchronize to a common spatio-temporal chaotic state when coupled above a critical strength. As a prototype of each single spatio-temporal chaotic system a lattice of maps interacting via power-law coupling is considered. The synchronization transition is studied as a non-equilibrium phase transition, and its critical properties are analyzed at varying the spatial interaction range as well as the nonlinearity of the dynamical units composing each system. In particular, continuous and discontinuous local maps are considered. In both cases the transitions are of the second order with critical indexes varying with the exponent characterizing the interaction range. For discontinuous maps it is numerically shown that the transition belongs to the {\it anomalous directed percolation} (ADP) family of universality classes, previously identified for L{é}vy-flight spreading of epidemic processes. For continuous maps, the critical exponents are different from those characterizing ADP, but apart from the nearest-neighbor case, the identification of the corresponding universality classes remains an open problem. Finally, to test the influence of deterministic correlations for the studied synchronization transitions, the chaotic dynamical evolutions are substituted by suitable stochastic models. In this framework and for the discontinuous case, it is possible to derive an effective Langevin description that corresponds to that proposed for ADP.
description: 12 pages, 5 figures Comments are welcome
How Open Science activities are perceived and recognised in Research and the Research career
Creators: name: Shmagun, Hanna
name: Mabile, Laurence
name: Erdmann, Chris
name: Cambon-Thomsen, Anne
name: Thomsen, Mogens
name: Grattarola, Florencia
Publisher: name: Zenodo
Year: 2022

description: This presentation summarises the work presented by the SHARC group at RDA P19 in June 2022, part of International Data Week 2022. In this session, the SHARC group (which stands for SHAring Rewards and Credits) presented preliminary results of a survey whose aim was to identify perceptions and expectations of various research communities regarding how Open Science activities, such as research data sharing, are (or should be) taken into consideration and rewarded.

V2 amended author list
description: This research is associated with the PARSEC group funded by the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI) with funding from the ANR, FAPESP, NSF and JST with the synthesis centre CESAB of the French Foundation for Research on Biodiversity.
How Open Science activities are perceived and recognised in Research and the Research career
Creators: name: Grattarola, Florencia
name: Shmagun, Hanna
name: Mabile, Laurence
name: Cambon-Thomsen, Anne
Publisher: name: Zenodo
Year: 2022

description: This presentation summarises the work presented by the SHARC group at RDA P19 in June 2022, part of International Data Week 2022. In this session, the SHARC group (which stands for SHAring Rewards and Credits) presented preliminary results of a survey whose aim was to identify perceptions and expectations of various research communities regarding how Open Science activities, such as research data sharing, are (or should be) taken into consideration and rewarded.
description: This research is product of the PARSEC group funded by the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI) with funding from the ANR, FAPESP, NSF and JST with the synthesis centre CESAB of the French Foundation for Research on Biodiversity.
Dense embeddings of surface groups
Creators: name: Breuillard, Emmanuel
name: Gelander, Tsachik
name: Souto, Juan
name: Storm, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 22E40, 20H10

description: We discuss dense embeddings of surface groups and fully residually free groups in topological groups. We show that a compact topological group contains a nonabelian dense free group of finite rank if and only if it contains a dense surface group. Also, we obtain a characterization of those Lie groups which admit a dense faithfully embedded surface group. Similarly, we show that any connected semisimple Lie group contains a dense copy of any fully residually free group.
description: This is the version published by Geometry & Topology on 4 October 2006
Cm2 Scale Synthesis of MoTe2 Thin Films with Large Grains and Layer Control David
Creators: name: Hynek, David J.
name: Singhania, Raivat M.
name: Xu, Shiyu
name: Davis, Benjamin
name: Wang, Lei
name: Yarali, Milad
name: Pondick, Joshua V.
name: Woods, John M.
name: Strandwitz, Nicholas C.
name: Cha, Judy J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Owing to the small energy differences between its polymorphs, MoTe2 can access a full spectrum of electronic states, from the 2H semiconducting state to the 1T semimetallic state, and from the Td Weyl semimetallic state to the superconducting state in the 1T and Td phase at low temperature. Thus, it is a model system for phase transformation studies as well as quantum phenomena such as the quantum spin Hall effect and topological superconductivity. Careful studies of MoTe2 and its potential applications require large area MoTe2 thin films with high crystallinity and thickness control. Here, we present cm2 scale synthesis of 2H MoTe2 thin films with layer control and large grains that span several microns. Layer control is achieved by controlling the initial thickness of the precursor MoOx thin films, which are deposited on sapphire substrates by atomic layer deposition and subsequently tellurized. Despite the van der Waals epitaxy, the precursor-substrate interface is found to critically determine the uniformity in thickness and grain size of the resulting MoTe2 films: MoTe2 grown on sapphire show uniform films while MoTe2 grown on amorphous SiO2 substrates form islands. This synthesis strategy decouples the layer control from the variabilities of growth conditions for robust growth results, and is applicable to grow other transition metal dichalcogenides with layer control.
description: 6 figure
Towards implementable recommendations: taking advantage of the SHARC open science survey.
Creators: name: Mabile, Laurence
name: Grattarola, Florencia
name: Erdmann, Chris
name: Cambon-Thomsen, Anne
name: Thomsen, Mogens
name: Shmagun, Hanna
Publisher: name: Zenodo
Year: 2023

description: The session organised by the SHARC RDA Interest Group (affiliated with PARSEC) was an interactive discussion focused on a first draft of recognition guidance & recommendations towards various stakeholders proposed by the SHARC ig. Discussion & feedback from the audience helped  identify some gaps, provided useful examples of ongoing initiatives/policies in the academic rewarding system, and some ideas on how to reach out actively the various actors needed.

Key outcomes/actions/takeaways

The audience confirmed that rewarding schemes for OS activities, esp. data sharing, is needed.

Rewarding pathways are not well known and guidance would help.

Need to create recommendations as a global picture including all stakeholders, not separately.

V2 amended author list
description: This research is related to the PARSEC project funded by the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI) with funding from the ANR, FAPESP, NSF and JST with the synthesis centre CESAB of the French Foundation for Research on Biodiversity.
Representations of Lie groups and random matrices
Creators: name: Collins, Benoit
name: Sniady, Piotr
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E46, 46L53, 15A52

description: We study the asymptotics of representations of a fixed compact Lie group. We prove that the limit behavior of a sequence of such representations can be described in terms of certain random matrices; in particular operations on representations (for example: tensor product, restriction to a subgroup) correspond to some natural operations on random matrices (respectively: sum of independent random matrices, taking the corners of a random matrix). Our method of proof is to treat the canonical block matrix associated to a representation as a random matrix with non-commutative entries.
title: Standard Model extensions with neutral leptons
title: Addressing dark matter, neutrino oscillations and the flavor anomalies
titleType: AlternativeTitle
Creators: name: Döring, Dominik
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Particle physics
subject: Dark matter
subject: Flavor anomalies
subject: Neutrino oscillation
subject: 530
subject: Elementarteilchenphysik
subject: Dunkle Materie
subject: Neutrinooszillation

description: In this thesis, we study two different Standard Model extensions involving neutral leptons aiming to explain current anomalies in the neutrino sector, as well as to explain the flavor anomalies in combination with the dark matter abundance in the universe. At first, we develop a model that introduces additional sterile neutrino states featuring altered dispersion relations in order to explain the longstanding short baseline neutrino oscillation anomalies and the gallium/reactor anomalies, while also staying in accordance with high energy data from atmospheric and long baseline accelerator experiments. Furthermore, we systematically analyze a model class of one-loop solutions to the B-anomalies in the context of fermionic singlet dark matter candidates. We study the dark matter phenomenology for both Dirac and Majorana fermions in all five models that contain a fermionic singlet. In our analysis, we include different hierarchies between the new Yukawa couplings to Standard Model quarks and also examine different mass ratios in the dark sector. Our study shows that especially direct detection limits can probe such solutions of the B-anomalies.
description: In dieser Dissertation untersuchen wir zwei verschiedene Standardmodellerweiterungen mit neutralen Leptonen, die darauf abzielen, die Anomalien im Neutrinosektor zu erklären, sowie eine Erklärung der Flavoranomalien mit der Existenz Dunkler Materie im Universum zu verknüpfen. Zunächst entwickeln wir ein Modell, das zusätzliche sterile Neutrinos mit veränderten Dispersionsrelationen einführt, um die Neutrino-Oszillationsanomalien, sowie die Gallium- und Reaktoranomalien zu erklären, während es gleichzeitig mit den Hochenergie-Daten aus atmosphärischen aus Beschleuniger-Experimenten in Übereinstimmung steht. Darüberhinaus präsentieren wir eine systematische Analyse einer Modellklasse von Ein-Schleifen-Lösungen für die B-Anomalien im Kontext von fermionischen Dunkle-Materie-Kandidaten in der Eich-Singulett-Darstellung. Wir untersuchen die Dunkle-Materie-Phänomenologie sowohl für Dirac- als auch für Majorana-Fermionen in allen fünf Modellen, die ein fermionisches Eich-Singulett enthalten. In unserer Analyse prüfen wir unterschiedliche Hierarchien zwischen den neuen Yukawa-Kopplungen an die Standardmodell-Quarks und analysieren zudem verschiedene Massenverhältnisse im dunklen Sektor. Unsere Studie zeigt, dass besonders direkte Detektionsexperimente solche Lösungen der B-Anomalien testen können.
The phytogeography and ecology of the mosses within the San Juan Islands, Washington State
Creators: name: Harpel, Judith Strachen
Publisher: name: University of British Columbia
Year: 2009

description: Floristic work on bryophytes in the state of Washington has been confined mostly to the mainland with little information available for the San Juan Islands. After four years of field work and an extensive search of historical records from herbaria throughout the region, the San Juan Islands prove to contain a diverse moss flora within a small geographic area; this flora consists of 224 species and varieties, 33 families and 97 genera. Four species Drepanocladus crassicostatus, Orthotrichum hallii, Tortula papillosa and Tortula laevipila var. meridionalis are reported new for the State of Washington. Tortula laevipila var. meridonalis is new for the United States and represents the second North American location. Detailed ecological observations were made for each collection and distributions for each species have been mapped. Keys are presented to both genus and species. The bulk of this flora is composed of circumboreal species that are derived from a once widespread Arcto-Tertiary flora. During the Pleistocene these islands were completely glaciated and the present flora represents, therefore, species that have migrated back into the region predominantly from southern refugial sites probably during the Hypsithermal Interval described by Deevey and Flint (1957). A cooling trend about 2000 yr. B.P. probably caused the southern element species to retreat southward throughout the region with fragments persisting only in those areas where favorable conditions also remained. The San Juan and adjacent islands can be interpreted as a "modern" refugium for southern mediterranean type climate species.