cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A search for cool molecular gas in GK Persei and other classical novae
Creators: name: Kaminski, Tomek
name: Mazurek, Helena J.
name: Menten, Karl M.
name: Tylenda, Romuald
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Detecting molecular line emission from classical nova remnants has the potential of revealing information on the composition of the ejecta, in particular, it can deliver accurate isotopic ratios in the matter processed by a thermonuclear runaway. We conducted searches toward more than 100 classical novae for emission in lines of the CO or HCN molecules using single-dish telescopes and interferometric arrays at millimeter and submillimeter wavelengths. The survey demonstrates that classical novae, young or old, are not strong sources of molecular emission at submillimeter and millimeter wavelengths. Additionally, we mapped CO emission around Nova Persei 1901 (GK Per), earlier claimed to be circumstellar in origin. Our measurements indicate that the observed emission is from the interstellar medium. Although no molecular emission at millimeter and submillimeter wavelengths has been found in classical novae, it is still likely that some will be detected with high-sensitivity interferometers such as ALMA.
description: comments welcome, submitted to A&A
Young, Low-Mass Brown Dwarfs with Mid-Infrared Excesses
Creators: name: Allers, K. N.
name: Kessler-Silacci, J. E.
name: Cieza, L. A.
name: Jaffe, D. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have combined new I, J, H, and Ks imaging of portions of the Chamaeleon II, Lupus I, and Ophiuchus star-forming clouds with 3.6 to 24 micron imaging from the Spitzer Legacy Program, "From Molecular Clouds to Planet Forming Disks", to identify a sample of 19 young stars, brown dwarfs and sub-brown dwarfs showing mid-infrared excess emission. The resulting sample includes sources with luminosities of 0.5>log(L/Lsun)>-3.1. Six of the more luminous sources in our sample have been previously identified by other surveys for young stars and brown dwarfs. Five of the sources in our sample have nominal masses at or below the deuterium burning limit (~12 M_J). Over three decades in luminosity, our sources have an approximately constant ratio of excess to stellar luminosity. We compare our observed SEDs to theoretical models of a central source with a passive irradiated circumstellar disk and test the effects of disk inclination, disk flaring, and the size of the inner disk hole on the strength/shape of the excess. The observed SEDs of all but one of our sources are well fit by models of flared and/or flat disks.
description: 35 pages, ApJ accepted
Establishing and Managing an Employers' Association in The Eastern Seaboard Areas of Thailand
Creators: name: Jamnean Joungtrakul
Publisher: name: Asian Forum on Business Education (AFBE)
Year: 2010
Subjects: Employers' organization,employers' association,employers' federation,council of employers' organization,industrial relations system,Eastern Seaboard,Thailand

description: 1, 3, AFBE Journal
Elicitation - word order
Creators: name: Anonymous I
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with speaker MPR. Topics covered include switch-reference clauses, relative clauses, word order with complex nominals, and reported speech.
Inclusive $B \to X_c l ν$ decay spectra at Belle and the determination of $|V_{cb}|$
Creators: name: Urquijo, Phillip
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report measurements of the inclusive electron energy spectrum and hadron invariant mass spectrum for charmed semileptonic decays of B mesons in a 140 fb^-1 data sample collected with the Belle detector at the KEKB e+e- collider. We determine the first four central moments and partial branching fraction of the electron energy spectrum for electron energy thresholds from 0.4 to 2.0 GeV, and the first two central and second non-central moments of the hadron invariant mass spectrum for lepton energy thresholds from 0.7 to 1.9 GeV. Using these measurements and Belle measurements of the photon energy moments in B -> X_s gamma decays, we determine the CKM matrix element |Vcb|, the b quark mass and higher order non-perturbative parameters that appear in the Heavy Quark Expansion by performing a global fit analysis in the kinetic mass and 1S schemes.
description: 4 pages, 4 figures, Contribution to the Proceedings of the XXXIII International Conference of High Energy Physics (ICHEP'06), Moscow, 2006
Ab initio based description of the unusual temperature increase of the electric field gradient at Ti sites in rutile TiO2
Creators: name: Nikolaev, A. V.
name: Chtchelkatchev, N. M.
name: Bibikov, A. V.
name: Salamatin, D. A.
name: Tsvyashchenko, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Combining a precise ab initio electron band structure calculation of the TiO2 rutile structure with the temperature evolution of the Ti mean-square displacements, we reproduce a puzzling temperature increase of the electric field gradient at Ti sites in TiO2, observed experimentally. Our method employs a procedure of averaging two quadrupole electron density components (L = 2) inside a sphere vibrating with the Ti nucleus at its center, where the key factor introducing the temperature dependence is the square root of the Debye-Waller factor. Although the Debye-Waller factor always reduces the corresponding Fourier component, in TiO2 due to the interplay between terms of opposite signs, it results in a net increase of the whole sum with temperature, leading to the growth of the electric field gradient. Quantitatively, we find that the increase of electric field gradient is only half of the experimental value, which we ascribe to anharmonic effects or a strong oxygen position influence. In addition, our method reproduces the unusual temperature dependence of the asymmetry parameter eta, which first decreases with temperature, goes to zero and then increases.
description: 9 pages, 7 figures, 1 Table
Can one count the shape of a drum?
Creators: name: Gnutzmann, Sven
name: Karageorge, Panos D.
name: Smilansky, Uzy
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Sequences of nodal counts store information on the geometry (metric) of the domain where the wave equation is considered. To demonstrate this statement, we consider the eigenfunctions of the Laplace-Beltrami operator on surfaces of revolution. Arranging the wave functions by increasing values of the eigenvalues, and counting the number of their nodal domains, we obtain the nodal sequence whose properties we study. This sequence is expressed as a trace formula, which consists of a smooth (Weyl-like) part which depends on global geometrical parameters, and a fluctuating part which involves the classical periodic orbits on the torus and their actions (lengths). The geometrical content of the nodal sequence is thus explicitly revealed.
description: 4 pages, 1 figure
Temporal patterns in the normal-regime fine-sediment cascade in Russell Creek Basin, Vancouver Island
Creators: name: Nistor, Craig
Publisher: name: University of British Columbia
Year: 2009

description: Large, infrequent "episodic" sediment transfers are commonly considered differently from "normal-regime" sediment-transfer activity. For example, in the important hillslope-gully-stream sediment cascade pathway in coastal British Columbia, debris slides and debris torrents are considered as "episodic events". On the other hand, lower-magnitude hillslope to gully-channel sediment transfers and fluvial sediment tranSport within gully and stream channels are usually considered as "normal-regime" activity, represented by annual yields. However, the results of this study illustrate the highly episodic nature of normal-regime fine-sediment transfers, which are closely linked to hydrometeorological and sediment-supply conditions. The results indicate that qualitative modelling of fine-sediment transfer activity, at the synoptic or event scale, should be possible based upon hydrometeorological and sediment-supply information. From such a model ~ the elements of which are presented in the concluding chapter ~ fine-sediment transfer activity could be forecast based upon regional weather forecasts. The study was conducted in Russell Creek Basin, on northern Vancouver Island, British Columbia. Fine-sediment transfer activity was monitored at a nested hierarchy of sites representing fine-sediment transfers from unstable hillslopes to a gully channel, suspended sediment transport out of the unstable gully and a nearby stable gully, and suspended sediment transport in Russell Creek near the mouth. Russell Creek Basin is located within Tsitika Watershed, which is the site of a British Columbia Ministry of Forests study dedicated to determining relative fine-sediment contributions from natural and logging-related sediment sources. The results of the Russell Creek study indicate that an event-based sediment sampling program is desirable and that at least some automated sampling is required. Furthermore, development of a qualitative sediment-transfer activity forecast model would be useful in interpretation of sample data and would allow efforts to be concentrated during the periods of greatest sediment-transfer activity.
Cyrtodactylus pulchellus Gray 1827
Creators: name: Figueroa, Alex
name: Low, Martyn E. Y.
name: Lim, Kelvin K. P.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Cyrtodactylus
Cyrtodactylus pulchellus

description: Cyrtodactylus pulchellus Gray, 1827 — Erroneous.
Penang Island Bent-toed Gecko
Singapore records.
Gymnodactylus pulchellus — Cantor, 1847a: 632.— Cantor, 1847c: 1068, 1074, 1075.— Ģnther, 1864: xiv, 113.—Theobald, 1868b: 31.—Theobald, 1876: 228.— Boulenger, 1885: 47.— Flower, 1896: 863.— Flower, 1899: 614, 626.— Boulenger, 1912: 37.—Sworder, 1925a: 63.
Cyrtodactylus pulchellus — Gray, 1845: xi, 173.—Taylor, 1963: 714, 718.—K.K.P. Lim & L.M. Chou, 1990: 55.— Denzer & Manthey, 1991: 314.—K.K.P. Lim & F.L.K. Lim, 1992: 150.—L.M. Chou et al., 1994: 105.— Manthey & Grossmann, 1997: 226.— Cox et al., 1998: 86.—Chan-ard et al., 1999: 24.—K.P. Lim & F.L.K. Lim, 2002: 150.—N. Baker & K.P. Lim, 2008: 168.— Das, 2010: 213.—N. Baker & K.P. Lim, 2012: 168.—N. Baker, 2014f: 332.—Chan-ard et al., 2015: 54.
Remarks. Gray (1827) first described this genus and species from specimens obtained by Hardwicke, and appointed it the type locality “ India ”. In providing a more detailed description of the genus and species, Gray assigned the locality as Penang (Hardwicke & Gray 1827), but at a later date changed the type locality again to Singapore (Gray 1845) (Table 1). Boulenger (1885) presented four specimens of C. pulchellus from Singapore at NHMUK, two syntypes from Hardwicke, and two specimens collected by Cantor. In their examination of the C. pulchellus complex, Grismer et al. (2012) showed that C. pulchellus is restricted and endemic to Penang Island. Grismer et al. (2012) also examined photos of one of the syntypes, BM XXII.91. a, and concluded that it matches C. pulchellus. Thus, they reverted the type locality back to Penang (Grismer et al. 2012). No specimens of the C. pulchellus complex were ever found from Singapore, and subsequent papers either refer to Gray (1845) or to the specimens at the NHMUK when including Singapore as part of the distribution for C. pulchellus. Lim & Chou (1990) first considered the presence of C. pulchellus in Singapore doubtful.
LKCNHM & NHMUK Museum specimens. Singapore (no locality): BMNH (no #) (no date), BMNH XXII.91. a (no date) [syntype], BMNH XXii.91.b (no date) [syntype], BMNH 1860.3.19.1030 (no date).
Additional Singapore museum specimens. No specimens.
description: Published as part of Figueroa, Alex, Low, Martyn E. Y. & Lim, Kelvin K. P., 2023, Singapore's herpetofauna: updated and annotated checklist, history, conservation, and distribution, pp. 1-378 in Zootaxa 5287 (1) on page 262, DOI: 10.11646/zootaxa.5287.1.1, http://zenodo.org/record/7960319
TP-LSD: Tri-Points Based Line Segment Detector
Creators: name: Huang, Siyu
name: Qin, Fangbo
name: Xiong, Pengfei
name: Ding, Ning
name: He, Yijia
name: Liu, Xiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper proposes a novel deep convolutional model, Tri-Points Based Line Segment Detector (TP-LSD), to detect line segments in an image at real-time speed. The previous related methods typically use the two-step strategy, relying on either heuristic post-process or extra classifier. To realize one-step detection with a faster and more compact model, we introduce the tri-points representation, converting the line segment detection to the end-to-end prediction of a root-point and two endpoints for each line segment. TP-LSD has two branches: tri-points extraction branch and line segmentation branch. The former predicts the heat map of root-points and the two displacement maps of endpoints. The latter segments the pixels on straight lines out from background. Moreover, the line segmentation map is reused in the first branch as structural prior. We propose an additional novel evaluation metric and evaluate our method on Wireframe and YorkUrban datasets, demonstrating not only the competitive accuracy compared to the most recent methods, but also the real-time run speed up to 78 FPS with the $320\times 320$ input.
description: Accepted by ECCV 2020
title: A Study of Immunoenzymatic Parameters in Pediatric Ischemic Stroke as a Contribution to More Efficient Pediatric Monitoring and Diagnosis
Creators: name: Sprincean, Mariana
name: Sidorenko, Ludmila
name: Sprincean, Serghei
name: Hadjiu, Svetlana
name: Wessel, Niels
Publisher: name: Humboldt-Universität zu Berlin
Year: 2025
Subjects: subject: stroke
subject: ischemic
subject: immunoenzymatic
subject: pediatric monitoring
subject: diagnosis
subject: prediction
subject: 600 Technik und Technologie

description: Introduction: Pediatric ischemic stroke (IS) is a rare but severe neurological emergency, with an incidence of 2–13 per 100,000. Most cases occur in the prenatal period or early infancy. Integrating artificial intelligence (AI) into clinical practice may enhance the early recognition of stroke. This pilot study aimed to identify immunoenzymatic markers as early predictors of pediatric IS, supporting machine learning applications. Materials and Methods: A prospective study (2017–2019) in Moldova included 53 children with IS and 53 healthy controls. The serum levels of vascular endothelial growth factor (VEGF), ciliary neurotrophic factor (CNTF), the S100B protein, CD105 (endoglin), antiphospholipid antibodies (APAs), and interleukin-6 (IL-6) were measured using ELISA during the acute phase. Results: Endoglin levels were significantly lower in IS patients (2.06 ± 0.012 ng/mL) vs. controls (2.51 ± 0.071 ng/mL) ( p < 0.001). S100B levels were elevated (0.524 ± 0.0850 ng/mL vs. 0.120 ± 0.0038 ng/mL, p < 0.01). VEGF levels were significantly increased (613.41 ± 39.299 pg/mL vs. 185.50 ± 12.039 pg/mL, p < 0.001), correlating with the infarct size and disease severity. CNTF levels were also higher (7.84 ± 0.322 pg/mL vs. 5.29 ± 0.067 pg/mL, p < 0.001). APA levels were elevated (1.37 ± 0.046 U/mL vs. 0.92 ± 0.021 U/mL, p < 0.001). IL-6 levels were 10 times higher in IS patients (22.02 ± 2.143 pg/mL vs. 2.38 ± 0.302 pg/mL, p < 0.001), correlating with the infarct size ( p < 0.004) and neurological prognosis at six months ( p < 0.01). Conclusions: IL-6, VEGF, CNTF, S100B, CD105, and APAs are key markers in pediatric IS, reflecting neuroinflammation, vascular disruption, and the long-term prognosis. Their integration into AI-driven diagnostic models may improve early stroke detection and pediatric monitoring.
File S3 - Alignments and chromatograms
Creators: name: De Rouck, Sander
name: Mocchetti, Antonio
name: Dermauw, Wannes
name: Van Leeuwen, Thomas
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310510
subject: Molecular evolution
classificationCode: 300104
subject: Genetically modified animals

description: File S3 - Alignments and chromatogramsSupplementary File of De Rouck et al. 2024, https://doi.org/10.1016/j.ibmb.2023.104068
Classical BRST charge for nonlinear algebras
Creators: name: Buchbinder, I. L.
name: Lavrov, P. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the construction of the classical nilpotent canonical BRST charge for the nonlinear gauge algebras where a commutator (in terms of Poisson brackets) of the constraints is a finite order polynomial of the constraints. Such a polynomial is characterized by the coefficients forming a set of higher order structure constraints. Assuming the set of constraints to be linearly independent, we find the restrictions on the structure constraints when the nilpotent BRST charge can be written in a simple and universal form. In the case of quadratically nonlinear algebras we find the expression for third order contribution in the ghost fields to the BRST charge without the use of any additional restrictions on the structure constants.
description: 15 pages, references added, version accepted by JMP
A Global Strategy for Indonesian Gambier Agro - Industry Development
Creators: name: E. Gumbira-Sa'id
name: Khaswar Syamsu
name: Etik Mardliyati
name: Adi, Alexie Herryandie Bronto
name: Evalia, Nur Afni
Publisher: name: Asian Forum on Business Education (AFBE)
Year: 2010
Subjects: Gambier Agro,Industry Development

description: 1, 3, AFBE Journal
Elicitation - switch-reference
Creators: name: Piño Bonangué, José
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with José Piño Bonangué. Topics covered include switch-reference clauses with quantifiers and overlapping reference, the behavior of switch-reference in questions, reported speech, word order with complex nominals, and disjunction.
Branching Laws for Some Unitary Representations of SL(4,R)
Creators: name: Orsted, Bent
name: Speh, Birgit
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we consider the restriction of a unitary irreducible representation of type $A_{\mathfrak q}(λ)$ of $GL(4,{\mathbb R})$ to reductive subgroups $H$ which are the fixpoint sets of an involution. We obtain a formula for the restriction to the symplectic group and to $GL(2,{\mathbb C})$, and as an application we construct in the last section some representations in the cuspidal spectrum of the symplectic and the complex general linear group. In addition to working directly with the cohmologically induced module to obtain the branching law, we also introduce the useful concept of pseudo dual pairs of subgroups in a reductive Lie group.
description: This is a contribution to the Proceedings of the 2007 Midwest Geometry Conference in honor of Thomas P. Branson, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane
Creators: name: Zhang, Hongsheng
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent type Ia supernovae data seem to favor a dark energy model whose equation of state $w(z)$ crosses -1, which is a much more amazing problem than the acceleration of the universe. Either the case that $w(z)$ evolves from above -1 to below -1 or the case that $w(z)$ runs from below -1 to above -1, is consistent with present data. In this paper we show that it is possible to realize the crossing behaviours of both of the two cases by only a single scalar field in frame of Dvali-Gabadadze-Porrati braneworld. At the same time we prove that there does not exist scaling solution in a universe with dust.
description: 8 pages, 4 figs, several references added, minor correction
Enhancement Of Coded Speech Using a Mask-Based Post-Filter
Creators: name: Korse, Srikanth
name: Gupta, Kishan
name: Fuchs, Guillaume
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The quality of speech codecs deteriorates at low bitrates due to high quantization noise. A post-filter is generally employed to enhance the quality of the coded speech. In this paper, a data-driven post-filter relying on masking in the time-frequency domain is proposed. A fully connected neural network (FCNN), a convolutional encoder-decoder (CED) network and a long short-term memory (LSTM) network are implemeted to estimate a real-valued mask per time-frequency bin. The proposed models were tested on the five lowest operating modes (6.65 kbps-15.85 kbps) of the Adaptive Multi-Rate Wideband codec (AMR-WB). Both objective and subjective evaluations confirm the enhancement of the coded speech and also show the superiority of the mask-based neural network system over a conventional heuristic post-filter used in the standard like ITU-T G.718.
description: ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Cold and Hot gas distribution around the Milky-Way-M31 system in the HESTIA simulations
Creators: name: Damle, Mitali
name: Sparre, Martin
name: Richter, Philipp
name: Hani, Maan H.
name: Nuza, Sebastián E.
name: Pfrommer, Christoph
name: Grand, Robert J. J.
name: Hoffman, Yehuda
name: Libeskind, Noam
name: Sorce, Jenny G.
name: Steinmetz, Matthias
name: Tempel, Elmo
name: Vogelsberger, Mark
name: Wang, Peng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations have revealed remarkable insights into the gas reservoir in the circumgalactic medium (CGM) of galaxy haloes. In this paper, we characterise the gas in the vicinity of Milky Way and Andromeda analogues in the HESTIA (High resolution Environmental Simulations of The Immediate Area) suite of constrained Local Group (LG) simulations. The HESTIA suite comprise of a set of three high-resolution {\sc arepo}-based simulations of the LG, run using the Auriga galaxy formation model. For this paper, we focus only on the $z = 0$ simulation datasets and generate mock skymaps along with a power spectrum analysis to show that the distributions of ions tracing low-temperature gas (HI and SiIII) are more clumpy in comparison to warmer gas tracers (OVI, OVII and OVIII). We compare to the spectroscopic CGM observations of M31 and low-redshift galaxies. HESTIA under-produces the column densities of the M31 observations, but the simulations are consistent with the observations of low-redshift galaxies. A possible explanation for these findings is that the spectroscopic observations of M31 are contaminated by gas residing in the CGM of the Milky Way.
description: 22 pages, 9 figures, revised version, Accepted in MNRAS
La tutela della donna nell'impresa italiana: sfide e opportunità
Creators: name: Buzzi, Alessandro Maria
Publisher: name: ----
Year: 2023
Subjects: parità di genere, lavoratrici, imprenditrici, parità salariale, pregiudizi, ambiente lavorativo.

description: Negli ultimi decenni, la presenza delle donne nel mondo del lavoro e nell’impresa italiana ha registrato una crescita significativa. Tuttavia, sono ancora presenti numerose sfide e disparità che opprimono il genere femminile nell’ambiente lavorativo, non ultime, la parità salariale e i pregiudizi che ogni giorno vedono le donne costrette a un giudizio di inferiorità. Questo articolo propone l’analisi del concetto di tutela femminile nell'impresa italiana, esaminando in particolare modo gli ostacoli e le opportunità che emergono nel contesto sociale ed imprenditoriale che ci circonda. L’obiettivo, è quello di promuovere una maggiore consapevolezza e di incoraggiare al cambiamento, al fine di garantire pari opportunità e diritti per le lavoratrici italiane, che siano esse dipendenti subordinate, professioniste o imprenditrici, in un universo lavorativo che deve indiscutibilmente aggrapparsi al concetto di meritocrazia.
description: ----, Vol 14, No 4 (2023): ISSUE 4/2023
Observational templates of star cluster disruption. The stellar group NGC 1901 in front of the Large Magellanic Cloud
Creators: name: Carraro, Giovanni
name: Marcos, Raul de la Fuente
name: Villanova, Sandro
name: Bidin, Christian Moni
name: Marcos, Carlos de le Fuente
name: Baumgardt, Holger
name: Solivella, Gladys
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations indicate that present-day star formation in the Milky Way disk takes place in stellar ensembles or clusters rather than in isolation. Bound, long lived stellar groups are known as open clusters. They gradually lose stars and in their final evolutionary stages they are severely disrupted leaving an open cluster remnant made of a few stars. In this paper, we study in detail the stellar content and kinematics of the poorly populated star cluster NGC1901. This object appears projected against the Large Magellanic Cloud. The aim of the present work is to derive the current evolutionary status, binary fraction, age and mass of this stellar group. These are fundamental quantities to compare with those from N-body models in order to study the most general topic of star cluster evolution and dissolution.The analysis is performed using wide-field photometry in the UBVI pass-band, proper motions from the UCAC.2 catalog, and 3 epochs of high resolution spectroscopy, as well as results from extensive N-body calculations.The star group NGC1901 is found to be an ensemble of solar metallicity stars, 400+/-100 Myr old, with a core radius of 0.23 pc, a tidal radius of 1.0 pc, and located at 400+/-50 pc from the Sun. Out of 13 confirmed members, only 5 single stars have been found. Its estimated present-day binary fraction is at least 62%. The calculated heliocentric space motion of the cluster is not compatible with possible membership in the Hyades stream.Our results show that NGC1901 is a clear prototype of open cluster remnant characterized by a large value of the binary fraction and a significant depletion of low-mass stars. In the light of numerical simulations, this is compatible with NGC1901 being what remains of a larger system initially made of 500-750 stars.
description: 13 pages, 12 eps figures (some of them degraded in resolution), accepted for publication in Astronomy and Astrophysics
Three approaches towards Floer homology of cotangent bundles
Creators: name: Weber, Joa
Publisher: name: arXiv
Year: 2006
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D40 (Primary) 57R58 (Secondary)

description: Consider the cotangent bundle of a closed Riemannian manifold and an almost complex structure close to the one induced by the Riemannian metric. For Hamiltonians which grow for instance quadratically in the fibers outside of a compact set, one can define Floer homology and show that it is naturally isomorphic to singular homology of the free loop space. We review the three isomorphisms constructed by Viterbo (1996), Salamon-Weber (2003) and Abbondandolo-Schwarz (2004). The theory is illustrated by calculating Morse and Floer homology in case of the euclidean n-torus. Applications include existence of noncontractible periodic orbits of compactly supported Hamiltonians on open unit disc cotangent bundles which are sufficiently large over the zero section.
description: 30 pages, 6 figures. To appear in J. Symplectic Geom. (Stare Jablonki conference issue)
Forbidden atomic oxygen emissions in the Martian dayside upper atmosphere
Creators: name: Raghuram, Susarla
name: Jain, Sonal Kumar
name: Bhardwaj, Anil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Recently, Nadir and Occultation for Mars Discovery (NOMAD) ultraviolet and visible spectrometer instrument on board the European Space Agency's ExoMars Trace Gas Orbiter (TGO) simultaneously measured the limb emission intensities for both [OI] 2972 and 5577 Å (green) emissions in the dayside of Martian upper atmosphere. We aim to explore the photochemistry of all these forbidden atomic oxygen emissions ([OI] 2972, 5577, 6300, 6464 Å) in the Martian daylight upper atmosphere and suitable conditions for the simultaneous detection of these emissions lines in the dayside visible spectra. A photochemical model is developed to study the production and loss processes of O(1S) and O(1D) by incorporating various chemical reactions of different O-bearing species in the upper atmosphere of Mars. By reducing Fox (2004) modelled neutral density profiles by a factor of 2, the calculated limb intensity profiles for [OI] 5577 and 2972 Å emissions are found to be consistent with the NOMAD-TGO observations. In this case, at altitudes below 120 km, our modelled limb intensity for [OI] 6300 Å emission is smaller by a factor 2 to 5 compared to that of NOMAD-TGO observation for [OI] 2972 Å emission, and above this distance it is comparable with the upper limit of the observation. We studied various parameters which can influence the limb intensities of these atomic oxygen forbidden emission lines. Our calculated limb intensity for [OI] 6300 Å emission, when the Mars is at near perihelion and for solar maximum condition, suggests that all these forbidden emissions should be observable in the NOMAD-TGO visible spectra taken on the dayside of Martian upper atmosphere. More simultaneous observations of forbidden atomic oxygen emission lines will help to understand the photochemical processes of oxygen-bearing species in the dayside Martian upper atmosphere.
description: 12 pages, 5 figures
Advantages and Disadvantages of Country Life
Creators: name: Bercow, Louise O.
name: Bercow, Louise O.
Publisher: name: Unknown
Year: 1932
Subjects: Community/Rural/Urban Development

description: This short list, which makes no claim to completeness, is an attempt to list references to material published since 1920, comparing the advantages and disadvantages of city and country life, with the emphasis on country life. It is a revision of a shorter typewritten list entitled, Advantages and Disadvantages of Farm Life, issued in January 1932. Since a number of the publications listed relate the experiences and opinions of persons who live in the country or in the suburbs of a city but who are not dependent upon farming for a living, the title has been changed to Advantages and Disadvantages of Country Life. No attempt has been made to include references to books on the farm problem, or books of fiction, poetry, essays, and the like, all of which are suggested as sources of additional material. A few bibliographies which may prove useful to the student who wishes to go into the subject more fully are listed on p. 26-27.
Reducing COVID-19 Cases and Deaths by Applying Blockchain in Vaccination Rollout Management
Creators: name: Medina, Jorge
name: Rojas-Cessa, Roberto
name: Umpaichitra, Vatcharapan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computers and Society (cs.CY)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Because a fast vaccination rollout against coronavirus disease 2019 (COVID-19) is critical to restore daily life and avoid virus mutations, it is tempting to have a relaxed vaccination-administration management system. However, a robust management system can support the enforcement of preventive measures, and in turn, reduce incidence and deaths. Here, we model a trustable and reliable management system based on blockchain for vaccine distribution by extending the Susceptible-Exposed-Infected-Recovery (SEIR) model. The model includes prevention measures such as mask-wearing, social distance, vaccination rate, and vaccination efficiency. It also considers negative social behavior, such as violations of social distance and attempts of using illegitimate vaccination proofs. By evaluating the model, we show that the proposed system can reduce up to 2.5 million cases and half a million deaths in the most demanding scenarios.
description: Peer reviewed
Elicitation - switch-reference
Creators: name: Soria Pérez, Celia
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Celia Soria Pérez. Topics covered include switch-reference and word order with complex nominals.
Finding faults: A scoping study of fault diagnostics for Industrial Cyber-Physical Systems
Creators: name: Dowdeswell, Barry
name: Sinha, Roopak
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: As Industrial Cyber-Physical Systems (ICPS) become more connected and widely-distributed, often operating in safety-critical environments, we require innovative approaches to detect and diagnose the faults that occur in them. Objective: We profile fault identification and diagnosis techniques employed in the aerospace, automotive, and industrial control domains. By examining both theoretical presentations as well as case studies from production environments, we present a profile of the current approaches being employed and identify gaps. Methodology: A scoping study was used to identify and compare fault detection and diagnosis methodologies that are presented in the current literature. Results: Fault identification and analysis studies from 127 papers published from 2004 to 2019 reveal a wide diversity of promising techniques, both emerging and in-use. These range from traditional Physics-based Models to Data-Driven Artificial Intelligence (AI) and Knowledge-Based approaches. Predictive diagnostics or prognostics featured prominently across all sectors, along with discussions of techniques including Fault trees, Petri nets and Markov approaches. We also profile some of the techniques that have reached the highest Technology Readiness Levels, showing how those methods are being applied in real-world environments beyond the laboratory. Conclusions: Our results suggest that the continuing wide use of both Model-Based and Data-Driven AI techniques across all domains, especially when they are used together in hybrid configuration, reflects the complexity of the current ICPS application space. While creating sufficiently-complete models is labor intensive, Model-free AI techniques were evidenced as a viable way of addressing aspects of this challenge, demonstrating the increasing sophistication of current machine learning systems.(Abridged)
description: Journal, 19 pages, 7 figures, 6 tables
POSTER SASPAM-SA ENLIT EUROPE 2023
Creators: name: MASCARI, FULVIO
name: BERSANO, ANDREA
name: GRIPPO, GIANMARCO
Publisher: name: Zenodo
Year: 2024
Subjects: SASPAM-SA
LWR
SMR
SAFETY
NUCLEAR SAFETY

description: This poster has been prepared for the ENLIT EUROPE 2023
Fluctuation profiles in inhomogeneous fluids
Creators: name: Eckert, Tobias
name: Stuhlmüller, Nico C. X.
name: Sammüller, Florian
name: Schmidt, Matthias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Three one-body profiles that correspond to local fluctuations in energy, in entropy, and in particle number are used to describe the equilibrium properties of inhomogeneous classical many-body systems. Local fluctuations are obtained from thermodynamic differentiation of the density profile or equivalently from average microscopic covariances. The fluctuation profiles follow from functional generators and they satisfy Ornstein-Zernike relations. Computer simulations reveal markedly different fluctuations in confined fluids with Lennard-Jones, hard sphere, and Gaussian core interactions.
Metallic State in Cubic FeGe beyond its Quantum Phase Transition
Creators: name: Pedrazzini, P.
name: Wilhelm, H.
name: Jaccard, D.
name: Jarlborg, T.
name: Schmidt, M.
name: Hanfland, M.
name: Akselrud, L.
name: Yuan, H. Q.
name: Schwarz, U.
name: Grin, Yu.
name: Steglich, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on results of electrical resistivity and structural investigations on the cubic modification of FeGe under high pressure. The long-wavelength helical order ($T_C=280$ K) is suppressed at a critical pressure $p_c\approx 19$ GPa. An anomaly in the resistivity data at $T_X(p)$ and strong deviations from a Fermi-liquid behavior in a wide pressure range above $p_c$ suggest that the suppression of $T_C$ disagrees with the standard notion of a quantum critical phase transition. The metallic ground state persisting at high pressure can be described by band-structure calculations if structural disorder due to zero-point motion is included. Discontinuous changes in the pressure dependence of the shortest Fe-Ge interatomic distance occurring close to the $T_C(p)$ phase line could be interpreted as a symmetry-conserving transition of first order.
description: 4 pages, 4 figures
ASTE CO(3-2) Observations of the Barred Spiral Galaxy M 83: I. Correlation between CO(3-2)/CO(1-0) Ratios and Star Formation Efficiencies
Creators: name: Muraoka, Kazuyuki
name: Kohno, Kotaro
name: Tosaki, Tomoka
name: Kuno, Nario
name: Nakanishi, Kouichiro
name: Sorai, Kazuo
name: Okuda, Takeshi
name: Sakamoto, Seiichi
name: Endo, Akira
name: Hatsukade, Bunyo
name: Kamegai, Kazuhisa
name: Tanaka, Kunihiko
name: Cortes, Juan
name: Ezawa, Hajime
name: Yamaguchi, Nobuyuki
name: Sakai, Takeshi
name: Kawabe, Ryohei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present CO(J=3-2) emission observations with the Atacama Submillimeter Telescope Experiment (ASTE) toward the 5' x 5' (or 6.6 x 6.6 kpc at the distance D = 4.5 Mpc) region of the nearby barred spiral galaxy M 83. We successfully resolved the major structures, i.e., the nuclear starburst region, bar, and inner spiral arms in CO(J=3-2) emission at a resolution of 22'' (or 480 pc), showing a good spatial coincidence between CO(J=3-2) and 6 cm continuum emissions. We found a global CO(J=3-2) luminosity L'_CO(3-2) of 5.1 x 10^8 K km s^-1 pc^2 within the observed region. We also found L'_CO(3-2) in the disk region (0.5 < r < 3.5 kpc) of 4.2 x 10^8 K km s^-1 pc^2, indicating that CO(J=3-2) emission in the disk region significantly contributes to the global L'_CO(3-2). From a comparison of a CO(J=3-2) data with CO(J=1-0) intensities measured with Nobeyama 45-m telescope, we found that the radial profile of CO(J=3-2)/CO(J=1-0) integrated intensity ratio R_3-2/1-0 is almost unity in the central region (r < 0.25 kpc), whereas it drops to a constant value, 0.6--0.7, in the disk region. The radial profile of star formation efficiencies (SFEs), determined from 6 cm radio continuum and CO(J=1-0) emission, shows the same trend as that of R_3-2/1-0. At the bar-end (r ~ 2.4 kpc), the amounts of molecular gas and the massive stars are enhanced when compared with other disk regions, whereas there is no excess of R_3-2/1-0 and SFE in that region. This means that a simple summation of the star forming regions at the bar-end and the disk cannot reproduce the nuclear starburst of M 83, implying that the spatial variation of the dense gas fraction traced by R_3-2/1-0 governs the spatial variation of SFE in M 83.
description: 13 pages, 11 figures, PASJ in press, version with high resolution figures is available via http://www.nro.nao.ac.jp/~z5001km/m83-aste.pdf
Phenylalanine ammonia-lyase (EC 4.3.1.5) from Pinus banksiana: partial cDNA cloning and effect of exogenously supplied trans-cinnamic acid on elicitor-inducible expression
Creators: name: Lam, Monica Lee
Publisher: name: University of British Columbia
Year: 2009

description: Phenylalanine ammonia-lyase (PAL; EC 4.3.1.5), the "entrypoint enzyme" of the phenylpropanoid pathway, catalyzes the conversion of L-phenylalanine to trans-cinnamic acid and is an important bridge between primary and secondary metabolism in plants. In many angiosperms, PAL exists as multiple isoforms, encoded by a gene family. PAL has been characterized from two gymnosperms, Pinus banksiana and Pinus taeda, and one form of the enzyme is present. The regulation of constitutive and inducible PAL expression is not well understood. From studies employing angiosperms, transcriptional control appears to be important, and modulation of PAL activity by trans-cinnamic acid has also been proposed. The objectives of this study were to investigate the genomic organization of PAL and the role of transcriptional and metabolic regulation of PAL in a gymnosperm. PAL activity is transiently increased in P. banksiana cell suspension cultures treated with an ectomycorrhizal fungal elicitor preparation. Preliminary results indicated that increases in PAL transcripts precede and are closely correlated with the PAL induction. Thus this system was convenient for constructing a cDNA library enriched in PAL sequences, and for studying the regulation of inducible PAL expression. Six partial PAL cDNA clones (0.2 to 1.8kb) were isolated from a library prepared from elicitor-treated P. banksiana cell cultures. In overlapping regions, the cDNA sequences are highly similar, but not identical, suggesting that multiple genes may encode PAL in P. banksiana. Extensive homology to the P. taeda PAL cDNA sequence was also observed. The chemical environment of elicitor-treated cells was manipulated by exogenously supplying frans-cinnamic acid. Hybridization of a P. banksiana partial PAL cDNA with total RNA slot blots was used to monitor PAL transcript levels. Supplying frans-cinnamic acid delayed the increase in PAL transcript levels and completely inhibited the induction of PAL activity normally associated with elicitor treatment. This suggests trans-cinnamic acid can downregulate PAL expression, although further study is required to determine the specificity of its action. This work represents the first study of the metabolic regulation of PAL in a gymnosperm species.
JOURNEYS INTO THE UNKNOWN: A SERIES OF SCIENCE ARCHITECTURE TASKS AND EVENTS, SPACE-BOUND EXPLORATIONS AND FAR-TRAVELS, DISCOVERIES AND MISSES (NEAR AND FAR), IMAGINATIVE SPACE-GAZING AND RELATED INVESTIGATIONS, OBSERVATIONS, ORBITS, AND OTHER REPETITIOUS MONITORING TASKS
Creators: name: Beeferman, Leah
Publisher: name: VCU Libraries
Year: 2010

description: VCU Theses and Dissertations
Flares in Open Clusters with K2. II. Pleiades, Hyades, Praesepe, Ruprecht 147, and M67
Creators: name: Ilin, Ekaterina
name: Schmidt, Sarah J.
name: Poppenhäger, Katja
name: Davenport, James R. A.
name: Kristiansen, Martti H.
name: Omohundro, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Flares, energetic eruptions on the surfaces of stars, are an unmistakable manifestation of magnetically driven emission. Their occurrence rates and energy distributions trace stellar characteristics such as mass and age. But before flares can be used to constrain stellar properties, the flaring-age-mass relation requires proper calibration. This work sets out to quantify flaring activity of independently age-dated main sequence stars for a broad range of spectral types using optical light curves obtained by the Kepler satellite. Drawing from the complete K2 archive, we searched 3435 $\sim 80$ day long light curves of 2111 open cluster members for flares using the open-source software packages K2SC to remove instrumental and astrophysical variability from K2 light curves, and AltaiPony to search and characterize the flare candidates. We confirmed a total of 3844 flares on high probability open cluster members with ages from zero age main sequence (Pleiades) to 3.6 Gyr (M67). We extended the mass range probed in the first study of this series to span from Sun-like stars to mid-M dwarfs. We added the Hyades (690 Myr) to the sample as a comparison cluster to Praesepe (750 Myr), the 2.6 Gyr old Ruprecht 147, and several hundred light curves from the late K2 Campaigns in the remaining clusters. The flare energy distribution was similar in the entire parameter space, following a power law relation with exponent $α\approx 1.84-2.39$. The flaring rates declined with age, and declined faster for higher mass stars. We found evidence that a rapid decline in flaring activity occurred in M1-M2 dwarfs around Hyades/Praesepe age, when these stars spun down to rotation periods of about 10 days, while higher mass stars had already transitioned to lower flaring rates, and lower mass stars still resided in the saturated activity regime. (abridged)
description: 27 pages, 13 figures. Accepted to A&A
Non-adiabatic Oscillations of Red Giants
Creators: name: Xiong, D. R.
name: Deng, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using our non-local time-dependent theory of convection, the linear non-adiabatic oscillations of 10 evolutionary model series with masses of 1--3M$_\odot$ are calculated. The results show that there is a red giant instability strip in the lower temperature side of the Hertzsprung-Russel (HR) diagram which goes along the sequences of the red giant branch (RGB) and the asymptotic giant branch (AGB). For red giants of lower luminosities, pulsation instability are found at high order overtones, the lower order modes from the fundamental to the second overtone are stable. Towards higher luminosity and lower effective temperature, instability moves to lower order modes, and the amplitude growth rate of oscillations also grows. At the high luminosity end of the strip, the fundamental and the first overtone become unstable, while all the modes above the 4th order become stable. The excitation mechanism have been sdudied in detail. It is found that turbulent pressure plays a key role for excitating of red variables. The frozen convecttin approximation is unavailaable for the low temperature stars with extended convective envelopes. In any case, this approximation can explain neither the red edge of the Cepheid instability strip, nor the blue edge of the pulsating red giant instability strip. An analytic expression of a pulsation constant as a function of stellar mass, luminosity and effective temperature is presented from this work.
description: 17 Pages, 10 Figures, submitted to MNRAS