cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extended Hubbard model in undoped and doped monolayer and bilayer graphene: Selection rules and organizing principle among competing orders
Creators: name: Szabo, Andras
name: Roy, Bitan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Performing a leading-order renormalization group analysis, here we compute the effects of generic local or short-range electronic interactions in monolayer and Bernal bilayer graphene. Respectively in these two systems chiral quasiparticles display linear and biquadratic band touching, leading to linearly vanishing and constant DOS. Consequently, the former system remains stable for weak enough local interactions, and supports a variety of ordered phases only beyond a critical strength of interactions. By contrast, ordered phases can nucleate for sufficiently weak interactions in bilayer graphene. By tuning the strength of all symmetry allowed local interactions, we construct various cuts of the phase diagram at zero and finite temperature and chemical doping. Typically, at zero doping insulating phases (such as charge-density-wave, antiferromagnet, quantum anomalous and spin Hall insulators) prevail at the lowest temperature, while gapless nematic or smectic liquids stabilize at higher temperatures. On the other hand, at finite doping the lowest temperature ordered phase is occupied by a superconductor. Besides anchoring such an organizing principle among the candidate ordered phases, we also establish a selection rule between them and the interaction channel responsible for the breakdown of linear or biquadrtic chiral nodal Fermi liquid. In addition, we also demonstrate the role of the normal state band structure in selecting the pattern of symmetry breaking from a soup of preselected incipient competing orders. As a direct consequence of the selection rule, while an antiferromagnetic phase develops in undoped monolayer and bilayer graphene, the linear (biquadratic) band dispersion favors condensation of a spin-singlet nematic (translational symmetry breaking Kekulé) superconductor in doped monolayer (bilayer) graphene, when the on site Hubbard repulsion dominates in these systems.
description: 40 Pages, 13 Figures, 5 Tables (Published Version): extended abstract, see manuscript
R-local Delaunay inhibition model
Creators: name: Bertin, Etienne
name: Billiot, Jean-Michel
name: Drouilhet, Remy
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Let us consider the local specification system of Gibbs point process with inhib ition pairwise interaction acting on some Delaunay subgraph specifically not con taining the edges of Delaunay triangles with circumscribed circle of radius grea ter than some fixed positive real value $R$. Even if we think that there exists at least a stationary Gibbs state associated to such system, we do not know yet how to prove it mainly due to some uncontrolled "negative" contribution in the expression of the local energy needed to insert any number of points in some large enough empty region of the space. This is solved by introducing some subgraph, called the $R$-local Delaunay graph, which is a slight but tailored modification of the previous one. This kind of model does not inherit the local stability property but satisfies s ome new extension called $R$-local stability. This weakened property combined with the local property provides the existence o f Gibbs state.
description: soumis \`{a} Journal of Statistical Physics 27 pages
Short-Period Variables in TESS Full-Frame Image Light Curves Identified via Convolutional Neural Networks
Creators: name: Olmschenk, Greg
name: Barry, Richard K.
name: Silva, Stela Ishitani
name: Powell, Brian P.
name: Kruse, Ethan
name: Schnittman, Jeremy D.
name: Cieplak, Agnieszka M.
name: Barclay, Thomas
name: Solanki, Siddhant
name: Ortega, Bianca
name: Baker, John
name: Mamani, Yesenia Helem Salinas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Transiting Exoplanet Survey Satellite (TESS) mission measured light from stars in ~85% of the sky throughout its two-year primary mission, resulting in millions of TESS 30-minute cadence light curves to analyze in the search for transiting exoplanets. To search this vast dataset, we aim to provide an approach that is both computationally efficient, produces highly performant predictions, and minimizes the required human search effort. We present a convolutional neural network that we train to identify short period variables. To make a prediction for a given light curve, our network requires no prior target parameters identified using other methods. Our network performs inference on a TESS 30-minute cadence light curve in ~5ms on a single GPU, enabling large scale archival searches. We present a collection of 14156 short-period variables identified by our network. The majority of our identified variables fall into two prominent populations, one of short-period main sequence binaries and another of Delta Scuti stars. Our neural network model and related code is additionally provided as open-source code for public use and extension.
Data on static location/Datos sobre locación estática
Creators: name: Cabrera Sandoval, Marcela
name: Vallejos Yopán, Rosa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sey

description: Responses to Ameka, Felix K., Carliene de Witte & David Wilkins. 1999. Picture Series for Positional Verbs: Eliciting the Verbal Component in Locative Descriptions. In Wilkins, David (ed.), Manual for the 1999 Field Season, pp. 48-54. Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2573831. The recordings have been transcribed and translated into Spanish and English using Praat.
Mathematical model of interest matchmaking in electronic social networks
Creators: name: de Vries, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.4; H.3.5; J.4; G.2.3; C.2.4

description: The problem of matchmaking in electronic social networks is formulated as an optimization problem. In particular, a function measuring the matching degree of fields of interest of a search profile with those of an advertising profile is proposed.
description: 6 pages, 3 figures
Stability and Functional Superconvergence of Narrow-Stencil Second-Derivative Generalized Summation-By-Parts Discretizations
Creators: name: Worku, Zelalem Arega
name: Zingg, David W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M06, 65M12, 65N06, 65N12

description: We analyze the stability and functional superconvergence of discretizations of diffusion problems with the narrow-stencil second-derivative generalized summation-by-parts (SBP) operators coupled with simultaneous approximation terms (SATs). Provided that the primal and adjoint solutions are sufficiently smooth and the SBP-SAT discretization is primal and adjoint consistent, we show that linear functionals associated with the steady diffusion problem superconverge at a rate of $ 2p $ when a degree $ p+1 $ narrow-stencil or a degree $ p $ wide-stencil generalized SBP operator is used for the spatial discretization. Sufficient conditions for stability of adjoint consistent discretizations with the narrow-stencil generalized SBP operators are presented. The stability analysis assumes nullspace consistency of the second-derivative operator and the invertibility of the matrix approximating the first derivative at the element boundaries. The theoretical results are verified by numerical experiments with the one-dimensional Poisson problem.
description: 21 pages, 8 figures
Additional file 1 of Musculoskeletal pain and sedentary behaviour in occupational and non-occupational settings: a systematic review with meta-analysis
Creators: name: Dzakpasu, Francis Q. S.
name: Carver, Alison
name: Brakenridge, Christian J.
name: Cicuttini, Flavia
name: Urquhart, Donna M.
name: Owen, Neville
name: Dunstan, David W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1: Supplementary Table 1. Search key terms and strings strategy. Supplementary Table 2. Studies excluded after full-text screening. Supplementary Figure 1. Full-day SB and LBP: (A) A forest plot of sensitivity analysis after excluding two studies, Kulaivelan et al. 2018 and Machado et al. 2018 from the analysis. (B) A funnel plot showing publication bias. Supplementary Figure 2. Self-reported workplace sitting and LBP: (A) A forest plot of sensitivity analysis after excluding two studies of lower quality assessment score, Anita et al. 2019 and van Vuuren et al. 2005 from the analysis. (B) A funnel plot showing publication bias. Supplementary Figure 3. Self-report workplace sitting and neck/shoulder pain: (A) A forest plot of sensitivity analysis after excluding two studies of low-quality, Cagnie et al. 2007 and Chrasakaran et al. 2003 from the analysis. (B) A funnel plot showing publication bias. Supplementary Figure 4. Self-reported workplace sitting and extremities pain: (A) A forest plot of sensitivity analysis after excluding two studies of low-quality, Chrasakaran et al. 2003 and Tsigonia et al. 2009 from the analysis. (B) A funnel plot showing publication bias. Supplementary Figure 5. Vehicle time and LBP: (A) A forest plot of sensitivity analysis after excluding the study, Hakim et al. 2018 with low-quality from the analysis. (B) A funnel plot showing publication bias.
Hamiltonian effective field theory in elongated or moving finite volume
Creators: name: Li, Yan
name: Wu, Jia-jun
name: Leinweber, Derek B.
name: Thomas, Anthony W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We extend previous work concerning rest-frame partial-wave mixing in Hamiltonian effective field theory to both elongated and moving systems, where two particles are in a periodic elongated cube or have nonzero total momentum, respectively. We also consider the combination of the two systems when directions of the elongation and the moving momentum are aligned. This extension should also be applicable in any Hamiltonian formalism. As a demonstration, we analyze lattice QCD results for the spectrum of an isospin-2 $ππ$ scattering system and determine the $s$, $d$, and $g$ partial-wave scattering information. The inclusion of lattice simulation results from moving frames significantly improves the uncertainty in the scattering information.
description: 31 pages, 5 figures
Additional file 1 of A polygenic risk score predicts mosaic loss of chromosome Y in circulating blood cells
Creators: name: Riaz, Moeen
name: Mattisson, Jonas
name: Polekhina, Galina
name: Bakshi, Andrew
name: Halvardson, Jonatan
name: Danielsson, Marcus
name: Ameur, Adam
name: McNeil, John
name: Forsberg, Lars A.
name: Lacaze, Paul
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology
subject: 60506 Virology

description: Additional file 1.
Apparent parity violation in the observed galaxy trispectrum
Creators: name: Paul, Pritha
name: Clarkson, Chris
name: Maartens, Roy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent measurements of the 4-point correlation function in large-scale galaxy surveys have found apparent evidence of parity violation in the distribution of galaxies. This cannot happen via dynamical gravitational effects in general relativity. If such a violation arose from physics in the early Universe it could indicate important new physics beyond the standard model, and would be at odds with most models of inflation. It is therefore now timely to consider the galaxy trispectrum in more detail. While the intrinsic 4-point correlation function, or equivalently the trispectrum, its Fourier counterpart, is parity invariant, the observed trispectrum must take redshift-space distortions into account. Although the standard Newtonian correction also respects parity invariance, we show that sub-leading relativistic corrections do not. We demonstrate that these can be significant at intermediate linear scales and are dominant over the Newtonian parity-invariant part around the equality scale and above. Therefore when observing the galaxy 4-point correlation function, we should expect to detect parity violation on large scales.
description: 8 pages, 6 figures. v2 has minor errors corrected and additional material and figures. Version to appear in Physical Review Letters
The Interaction Fidelity Model: A Taxonomy to Distinguish the Aspects of Fidelity in Virtual Reality
Creators: name: Bonfert, Michael
name: Muender, Thomas
name: McMahan, Ryan P.
name: Steinicke, Frank
name: Bowman, Doug
name: Malaka, Rainer
name: Döring, Tanja
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Graphics (cs.GR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: H.5.2; H.5.1; I.3.7; H.1.2

description: Fidelity describes how closely a replication resembles the original. It can be helpful to analyze how faithful interactions in virtual reality (VR) are to a reference interaction. In prior research, fidelity has been restricted to the simulation of reality - also called realism. Our definition includes other reference interactions, such as superpowers or fiction. Interaction fidelity is a multilayered concept. Unfortunately, different aspects of fidelity have either not been distinguished in scientific discourse or referred to with inconsistent terminology. Therefore, we present the Interaction Fidelity Model (IntFi Model). Based on the human-computer interaction loop, it systematically covers all stages of VR interactions. The conceptual model establishes a clear structure and precise definitions of eight distinct components. It was reviewed through interviews with fourteen VR experts. We provide guidelines, diverse examples, and educational material to universally apply the IntFi Model to any VR experience. We identify common patterns and propose foundational research opportunities.
description: 34 pages incl. references and appendix
Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission
Creators: name: Koyama, Katsuji
name: Hyodo, Yoshiaki
name: Inui, Tatsuya
name: Nakajima, Hiroshi
name: Matsumoto, Hironori
name: Tsuru, Takeshi Go
name: Takahashi, Tadayuki
name: Maeda, Yoshitomo
name: Yamazaki, Noriko
name: Murakami, Hiroshi
name: Yamauchi, Shigeo
name: Tsuboi, Yohko
name: Senda, Atsushi
name: Kataoka, Jun
name: Takahashi, Hiromitsu
name: Holt, Stephen S
name: Brown, Gregory V
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed the diffuse X-ray emission from the Galactic center (GC) using the X-ray Imaging Spectrometer (XIS) on Suzaku. The high-energy resolution and the low-background orbit provide excellent spectra of the GC diffuse X-rays (GCDX). The XIS found many emission lines in the GCDX near the energy of K-shell transitions of iron and nickel. The most pronounced features are FeI K alpha at 6.4 keV and K-shell absorption edge at 7.1 keV, which are from neutral and/or low ionization states of iron, and the K-shell lines at 6.7 keV and 6.9 keV from He-like (FeXXV K alpha) and hydrogenic (FeXXVI Ly alpha) ions of iron. In addition, K alpha lines from neutral or low ionization nickel (NiI K alpha) and He-like nickel (NiXXVII K alpha), and FeI K beta, FeXXV K beta, FeXXVI Ly beta, FeXXV K gamma and FeXXVI Ly gamma are detected for the first time. The line center energies and widths of FeXXV K alpha and FeXXVI Ly alpha favor a collisional excitation (CE) plasma for the origin of the GCDX. The electron temperature determined from the line flux ratio of FeXXV K alpha / FeXXV K beta is similar to the ionization temperature determined from that of FeXXV K alpha /FeXXVI Ly alpha. Thus it would appear that the GCDX plasma is close to ionization equilibrium. The 6.7 keV flux and temperature distribution to the galactic longitude is smooth and monotonic,in contrast to the integrated point source flux distribution. These facts support the hypothesis that the GCDX is truly diffuse emission rather than the integration of the outputs of a large number of unresolved point sources. In addition, our results demonstrate that the chemical composition of Fe in the interstellar gas near the GC is constrained to be about 3.5 times solar.
description: 11 pages, 19 figures. Accepted for publication in PASJ Suzaku Special Issue (vol. 59 sp. 1)
RISAR: RIS-assisted Human Activity Recognition with Commercial Wi-Fi Devices
Creators: name: Liu, Junshuo
name: Huang, Yunlong
name: Yang, Wei
name: Li, Zhe
name: Xiong, Rujing
name: Mi, Tiebin
name: Shi, Xin
name: Qiu, Robert C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Human activity recognition (HAR) holds significant importance in smart homes, security, and healthcare. Existing systems face limitations because of the insufficient spatial diversity provided by a limited number of antennas. Furthermore, inefficiencies in noise reduction and feature extraction from sensing data pose challenges to recognition performance. This study presents a reconfigurable intelligent surface (RIS)-assisted passive human activity recognition (RISAR) method, compatible with commercial Wi-Fi devices. RISAR leverages a RIS to enhance the spatial diversity of Wi-Fi signals, effectively capturing a wider range of information distributed across the spatial domain. A novel high-dimensional factor model based on random matrix theory is proposed to address noise reduction and feature extraction in the temporal domain. A dual-stream spatial-temporal attention network model is developed to assign variable weights to different characteristics and sequences, mimicking human cognitive processes in prioritizing essential information. Experimental analysis shows that RISAR significantly outperforms existing HAR methods in accuracy and efficiency, achieving an average accuracy of 97.26%. These findings underscore RISAR's adaptability and potential as a robust activity recognition solution in real environments.
A Real-World Demonstration of Machine Learning Generalizability: Intracranial Hemorrhage Detection on Head CT
Creators: name: Salehinejad, Hojjat
name: Kitamura, Jumpei
name: Ditkofsky, Noah
name: Lin, Amy
name: Bharatha, Aditya
name: Suthiphosuwan, Suradech
name: Lin, Hui-Ming
name: Wilson, Jefferson R.
name: Mamdani, Muhammad
name: Colak, Errol
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Machine learning (ML) holds great promise in transforming healthcare. While published studies have shown the utility of ML models in interpreting medical imaging examinations, these are often evaluated under laboratory settings. The importance of real world evaluation is best illustrated by case studies that have documented successes and failures in the translation of these models into clinical environments. A key prerequisite for the clinical adoption of these technologies is demonstrating generalizable ML model performance under real world circumstances. The purpose of this study was to demonstrate that ML model generalizability is achievable in medical imaging with the detection of intracranial hemorrhage (ICH) on non-contrast computed tomography (CT) scans serving as the use case. An ML model was trained using 21,784 scans from the RSNA Intracranial Hemorrhage CT dataset while generalizability was evaluated using an external validation dataset obtained from our busy trauma and neurosurgical center. This real world external validation dataset consisted of every unenhanced head CT scan (n = 5,965) performed in our emergency department in 2019 without exclusion. The model demonstrated an AUC of 98.4%, sensitivity of 98.8%, and specificity of 98.0%, on the test dataset. On external validation, the model demonstrated an AUC of 95.4%, sensitivity of 91.3%, and specificity of 94.1%. Evaluating the ML model using a real world external validation dataset that is temporally and geographically distinct from the training dataset indicates that ML generalizability is achievable in medical imaging applications.
description: This paper is under review
Borello, E.; Luise, M.C. (a cura di) (2011). Gli italiani e le lingue straniere. Torino: UTET Università
Creators: name: Bertelli, Anna
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

description: EL.LE
Collaborative learning of common latent representations in routinely collected multivariate ICU physiological signals
Creators: name: Haule, Hollan
name: Piper, Ian
name: Jones, Patricia
name: Lo, Tsz-Yan Milly
name: Escudero, Javier
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In Intensive Care Units (ICU), the abundance of multivariate time series presents an opportunity for machine learning (ML) to enhance patient phenotyping. In contrast to previous research focused on electronic health records (EHR), here we propose an ML approach for phenotyping using routinely collected physiological time series data. Our new algorithm integrates Long Short-Term Memory (LSTM) networks with collaborative filtering concepts to identify common physiological states across patients. Tested on real-world ICU clinical data for intracranial hypertension (IH) detection in patients with brain injury, our method achieved an area under the curve (AUC) of 0.889 and average precision (AP) of 0.725. Moreover, our algorithm outperforms autoencoders in learning more structured latent representations of the physiological signals. These findings highlight the promise of our methodology for patient phenotyping, leveraging routinely collected multivariate time series to improve clinical care practices.
description: Published in 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW)
Additional file 1 of Pancreatic medullary carcinoma developed on a pancreatic intraductal papillary mucinous neoplasm with loss of MSH2 and MSH6 expression: a case report
Creators: name: Verocq, Camille
name: Racu, Marie-Lucie
name: Bafort, Dominique
name: Butorano, Gloria
name: Perez-Casanova Garcia, Luis
name: Navez, Julie
name: Witterwulghe, Marc
name: Sheahan, Kieran
name: Swan, Niall
name: Closset, Jean
name: Van Laethem, Jean-Luc
name: Maris, Calliope
name: D’Haene, Nicky
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: Additional file 1
Balboni, P.E. (2011) Conoscenza, verità, etica nell’educazione linguistica. Perugia: Guerra
Creators: name: Bertelli, Anna
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

description: EL.LE
Cosmic Magnetic Fields and the CMB
Creators: name: Durrer, Ruth
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I describe the imprint of primordial magnetic fields on the CMB. I show that these are observable only if the field amplitude is of the order of $B\gsim 10^{-9}G$ on Mpc scale. I further argue that such fields are strongly constrained by the stochastic background of gravity waves which they produce. Primordial magnetic fields, which are strong enough to be seen in the CMB, are compatible with the nucleosynthesis bound, only if their spectrum is close to scale invariant, or maybe if helical magnetic fields provoke an inverse cascade. For helical fields, the CMB signature is especially interesting. It contains parity violating T-B and E--B correlations.
description: 12 pages, 6 figures, Contribution to the proceedings of the Francesco Melchiorri Memorial conference, Rome, April 2006
Dyslexia and the Phonological Deficit Hypothesis
Creators: name: Costenaro, Verusca
name: Pesce, Antonella
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

The present essay aims at investigating the relationship between dyslexia, phonological awareness, and the development of reading skills, both in a first language (L1) and in a foreign language (FL) – and especially in the English language. The first paragraph offers a theoretical overview of the notions of dyslexia and phonological awareness. The essay moves on to examine the relationship between early phonological awareness skills in preschool children and the later development of their literacy skills. The authors then describe an intervention program to foster phonological awareness skills in English-speaking preschoolers, and propose to employ this practice – in an adapted manner – in Italian preschools. What follows is a focus on the role of phonological awareness in primary school children. After reviewing the main approaches in the field of language teaching methodology, and their degree of ‘dyslexic-friendliness’, the authors present a phonics teaching proposal to strengthen not only phonological awareness skills in primary school children, but also to approach children to literacy in the form of regular correspondences between sounds and letters in English, through the educational tool of storytelling.

description: EL.LE
Direct and sequential four-body recombination rates at low temperatures
Creators: name: Garrido, E.
name: Jensen, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate four-body nuclear reactions in stellar environments contributing to creation of light nuclei, exemplified by $^9$Be and $^{12}$C. The originally assumed process is radiative capture, where nuclear clusters combine into the excited final nucleus and photon emission populates the stable nuclear ground states. Instead, we consider nuclear four-body recombination reactions where a spectator nuclear particle replaces the photon. We first develop the elaborate formalism for both, direct and sequential capture processes, where the decaying three-body resonance is formed without and with population of an intermediate two-body resonance, respectively. To facilitate both calculations and practical applications we parameterize the involved cross sections as done successfully in previous computations of reaction rates. We consider the lowest-lying nuclear states with their dominant contributions at low stellar temperatures. We calculate and compare reaction and production rates for different processes. The direct reaction mechanism dominates by many orders of magnitude at low temperature, where the sequential stepping stones are energetically too expensive to use. At somewhat higher temperatures these two different nuclear four-body mechanisms become comparable. Comparison to radiative three-body capture reveals already formally, but also numerically, that four-body nuclear recombination must dominate for sufficiently high nuclear densities. Numerical values are given for all these rates as function of temperature and density. The relative importance is exhibited.
description: 12 pages, 6 figures. Submitted for publication
Adhesive contact of a compliant sphere to an elastic coated substrate: the thin film limit
Creators: name: Barthel, Etienne
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Experimental results for adhesive contacts on substrates coated with elastomeric thin films have recently been obtained by C. Tardivat and L. Léger (J. Adhesion Sci. Technol. 15 1055-1078 (2001)) by the so-called JKR test, which provides both adhesion energy and elastic modulus. These data show that on substrates coated with thin films the adhesion and effective elastic modulus of the sphere depend upon the film thickness. In keeping with the experimental conditions, we try to interpret these data using a simple model (E. Barthel and A. Perriot, J. Phys. D 40, 1059-1067 (2007)) in the thin film limit, ie when the film thickness is small compared to the contact radius. Although the film does impact the local crack tip stress field, we show that no effect on the macroscopic contact variables is expected for the adhesion to coated substrates in such confined geometries. The deviations from the experimental results are ascribed to the idealized contact boundary conditions assumed in the model.
Didattica del francese lingua straniera ad allievi con disturbi specifici dell’apprendimento
Creators: name: Celentin, Paola
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

In this essay we intend to propose an early systematization of the difficulties for a dyslexic Italian student learning French. We addressed our interest to students attending secondary school (11-19 years old), because in Italy French is taught in these school levels as a second language. From a brief discussion of the difficulties of this language for people with specific learning needs, we will focus specifically on the errors made by dyslexic students learning French and we will highlight some possible action to make the French language more accessible even to people who have this disorder.

description: EL.LE
Disturbi emotivi e socio-relazionali
Creators: name: Freddi, Egidio
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

The acquisition of a language, native or foreign, initiates a complex process that introduces cognitive and emotional elements in each person. Besides the typically cognitive characteristics, psycho-emotional components play an important role that end up being determinant for an individual’s future adaptation to school and to interpersonal relationships. In this paper, we will approach emotional disorders regarding the developmental ages (childhood and adolescence) not so much from a clinic or psychopathologic point of view, but in specific, in relation to linguistic education and the acquisition of a language within the humanistic perspective.

description: EL.LE
Data on static location/Datos sobre locación estática
Creators: name: Chota Macanilla, Román
name: Vallejos Yopán, Rosa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sey

description: Responses to Ameka, Felix K., Carliene de Witte & David Wilkins. 1999. Picture Series for Positional Verbs: Eliciting the Verbal Component in Locative Descriptions. In Wilkins, David (ed.), Manual for the 1999 Field Season, pp. 48-54. Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2573831. The recordings have been transcribed and translated into Spanish and English using Praat.
Multi-scale view of star formation in IRAS 21078+5211: From clump fragmentation to disk wind
Creators: name: Moscadelli, L.
name: Beuther, H.
name: Ahmadi, A.
name: Gieser, C.
name: Massi, F.
name: Cesaroni, R.
name: Sánchez-Monge, Á.
name: Bacciotti, F.
name: Beltrán, M. T.
name: Csengeri, T.
name: Galván-Madrid, R.
name: Henning, Th.
name: Klaassen, P. D.
name: Kuiper, R.
name: Leurini, S.
name: Longmore, S. N.
name: Maud, L. T.
name: Möller, T.
name: Palau, A.
name: Peters, T.
name: Pudritz, R. E.
name: Sanna, A.
name: Semenov, D.
name: Urquhart, J. S.
name: Winters, J. M.
name: Zinnecker, H.
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: In the massive star-forming region IRAS 21078+5211, a highly fragmented cluster (0.1~pc in size) of molecular cores is observed, located at the density peak of an elongated (1~pc in size) molecular cloud. A small (1~km/s per 0.1~pc) LSR velocity (Vlsr) gradient is detected across the axis of the molecular cloud. Assuming we are observing a mass flow from the harboring cloud to the cluster, we derive a mass infall rate of about 10^{-4}~M_{sun}~yr^{-1}. The most massive cores (labeled 1, 2, and 3) are found at the center of the cluster, and these are the only ones that present a signature of protostellar activity in terms of emission from high-excitation molecular lines or a molecular outflow. We reveal an extended (size about 0.1~pc), bipolar collimated molecular outflow emerging from core 1. We believe this is powered by a (previously discovered) compact (size <= 1000~au) radio jet, ejected by a YSO embedded in core 1 (named YSO-1), since the molecular outflow and the radio jet are almost parallel and have a comparable momentum rate. By means of high-excitation lines, we find a large (14~km/s over 500~au) Vlsr gradient at the position of YSO-1, oriented approximately perpendicular to the radio jet. Assuming this is an edge-on, rotating disk and fitting a Keplerian rotation pattern, we determine the YSO-1 mass to be 5.6+/-2.0~M_{sun}. The water masers (previously observed with VLBI) emerge within 100-300~au from YSO-1 and are unique tracers of the jet kinematics. Their three-dimensional (3D) velocity pattern reveals that the gas flows along, and rotates about, the jet axis. We show that the 3D maser velocities are fully consistent with the magneto-centrifugal disk-wind models predicting a cylindrical rotating jet. Under this hypothesis, we determine the jet radius to be about 16~au and the corresponding launching radius and terminal velocity to be about 2.2~au and 200~km/s, respectively.
description: 25 pages, 16 figures
Multiple anomalous U(1)s in heterotic blow-ups
Creators: name: Nibbelink, S. Groot
name: Nilles, H. P.
name: Trapletti, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The existence of multiple anomalous U(1)s is demonstrated explicitly in a blow-up version of a heterotic Z_3 orbifold. Another blow-up of the same orbifold supports further evidence for the type-I/heterotic duality in four dimensions. It has a single anomalous U(1) which does not factorize universally. As multiple anomalous U(1)s as well as non-universal factorization have never been established on heterotic orbifolds explicitely, these findings might appear contradictory at first sight. Possible inconsistencies are avoided by reinterpreting a charged twisted state as a second non-universal localized axion. The mismatch between the charges of the orbifold and blow-up spectra is resolved by suitable field redefinitions. The anomaly of the field redefinitions corresponds to the difference of blow-up and heterotic orbifold anomalies.
description: 7 pages LaTeX
Additional file 1 of Initial experience in staging primary oesophageal/gastro-oesophageal cancer with 18F-FDG PET/MRI
Creators: name: Sharkey, Amy R.
name: Sah, Bert-Ram
name: Withey, Samuel J.
name: Bhuva, Shaheel
name: Neji, Radhouene
name: Jeljeli, Sami
name: Green, Adrian
name: Cook, Gary J. R.
name: Goh, Vicky
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Appendix 1. WBMRI Imaging Protocol – PET/MRI Oesophagus.
Instabilities of a Filled Vortex in a Two-Component Bose-Einstein Condensate
Creators: name: Ruban, Victor P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A two-component Bose-Einstein condensate of cold atoms with a strong intercomponent repulsion leading to the spatial separation of the components has been numerically studied. Configurations with a multiple quantized vortex in one component, where the vortex core is filled with the other component, are considered. The effective radius of the core can exceed the width of the transition layer between components, and then an analogy with a filled cylindrical vortex in the classical hydrodynamics of two immiscible ideal fluids appears. This analogy allows one to analyze the longitudinal "sausage" instability and the transverse instability of the filled vortex in the condensate caused by the "tangential discontinuity," as well as the stable regime in the parametric gap between them. The presence of long-lived coherent structures formed in some cases at the nonlinear stages of both instabilities is numerically discovered.
description: 5 pages, 18 figures, in English, to appear as JETP Lett. 113(8), 532 (2021)
Ipovisione e insegnamento linguistico
Creators: name: Scevola, Mirco
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

The starting point of this paper is the influence a handicap has in the process of knowing and in language development. For this reason it tries to provide insights on how to face visual impairments in the school environment. At the beginning, the paper focuses on some of the problems of a partially-sighted child, who is situated somewhere in the middle between a normal-sighted and a blind child. In order to help such students develop language skills, the teachers need to pay attention on two different aspects: on the one hand the development of knowledge, skills and abilities needed to provide answers to the student’s needs, on the other hand the student’s limitations. The first two paragraphs focus on low vision difficulties, whereas the third discusses the influence of the visual impairment on learning and provides suggestions for teaching action.

description: EL.LE
Bisectors of the cross-correlation function applied to stellar spectra. Discriminating stellar activity, oscillations and planets
Creators: name: Dall, T. H.
name: Santos, N. C.
name: Arentoft, T.
name: Bedding, T. R.
name: Kjeldsen, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We investigate whether bisectors derived from cross-correlation functions (CCF) of single-exposure spectra can be used to provide information on stellar atmospheres, and whether they can be used to discriminate between radial velocity changes caused by planets, magnetic activity and oscillations. Methods: Using a sample of bright stars observed with the HARPS spectrograph, we examine the shapes of the bisectors of individual strong spectral lines in summed spectra, comparing with similar studies in the literature. Moreover, we examine four different quantitative CCF bisector measures for correlations with radial velocity and stellar parameters. Results: We show that CCF bisector measures can be used for quantitative analysis, employing both the absolute values and the variations. From absolute values, log g and absolute magnitude can be approximated, and from the correlations with radial velocity one can distinguish between magnetic activity, oscillations and orbiting planets as the probable cause of radial velocity variations. We confirm that different isolated spectral lines show different bisector shapes, even between lines of the same element, calling for caution in trying to derive global stellar properties from the bisector of a CCF. For the active star HR 1362 we suggest from the bisector shape an extra photospheric heating caused by the chromosphere of several hundred degrees. We confirm the fill-in of spectral lines of the Sun taken on the daylight sky caused by Rayleigh-Brillouin and aerosol scattering, and we show for the first time that the fill-in has an asymmetric component.
description: 10 pages, 13 figures. Accepted for publication in A&A
The policy making processes of the European Community
Creators: name: Kuypers, Rutger Adriaan Cornelis
Publisher: name: University of British Columbia
Year: 2008

description: The thesis looks at the policy making processes of the European Community by testing four theoretical explanations against three cases. The reluctance to reform the Common Agricultural Policy, import restrictions on Japanese cars, and car exhaust emissions standards are the three cases examined. Institutionalist, pluralist, Marxist and liberal economic theories are applied to these cases to determine which best accounts for EC policy outcomes. The analysis is preceded by a brief look at the institutional organization of the EC and the processes used to form policy. The conclusion is drawn that institutionalist theory is best suited to explain the policy outcomes. The struggle between the three main institutions of the EC -- the Commission, the Council of Ministers, and the European Parliament -- and the competing visions of a future EC that they represent are crucial to an understanding of EC policy processes. Pluralist explanations provide some insights into EC policy making, but the prominence of agricultural and carmaker interests conveys an influence of interest groups that may not hold true for other policy outcomes. Marxist and liberal economic theory both suffer the same fate: they help explain the broad ambitions of the 1992 project, but fail to explain specific policies.
Fluctuations in protein synthesis from a single RNA template: stochastic kinetics of ribosomes
Creators: name: Garai, Ashok
name: Chowdhury, Debashish
name: Ramakrishnan, T. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Genomics (q-bio.GN)
subject: Quantitative Methods (q-bio.QM)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Proteins are polymerized by cyclic machines called ribosome which use their messenger RNA (mRNA) track also as the corresponding template and the process is called translation. We explore, in depth and detail, the stochastic nature of the translation. We compute various distributions associated with the translation process; one of them, namely dwell time distribution, has been measured in recent single ribosome experiments (Wen et al. Nature {\bf 452}, 598 (2008)). The form of this distribution predicted by our theory is consistent with that extracted from the experimental data. For our quantitative calculations, we use a model that captures both the mechano-chemistry of each individual ribosome as well as their steric interactions. We also demonstrate the effects of the sequence inhomogeneities of real genes on the fluctuations and noise in translation. In principle, our new predictions can be tested by carrying out {\it in-vitro} experiments.
description: 4 pages; new data; revised title, abstract and text
Stable Reduced-Rank VAR Identification
Creators: name: Rong, Xinhui
name: Solo, Victor
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The vector autoregression (VAR) has been widely used in system identification, econometrics, natural science, and many other areas. However, when the state dimension becomes large the parameter dimension explodes. So rank reduced modelling is attractive and is well developed. But a fundamental requirement in almost all applications is stability of the fitted model. And this has not been addressed in the rank reduced case. Here, we develop, for the first time, a closed-form formula for an estimator of a rank reduced transition matrix which is guaranteed to be stable. We show that our estimator is consistent and asymptotically statistically efficient and illustrate it in comparative simulations.
description: 17 pages, 6 figures
Innovazione tecnologica e promozione dell’apprendimento linguistico da parte di allievi ciechi e ipovedenti
Creators: name: Quatraro, Antonio
name: Paiano, Mario
name: Bianchi, Rossella
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2012

description:

The results of the COMENIUS - ELLVIS project contribute to promote and improve the access for people with visual impairments to language learning. As good learning material for visually impaired children is rare this innovative material opens up new possibilities for this target group and makes it possible for vi children to take part in lifelong learning. The project has been developed starting from the results achieved by the former project ALLVIP, in which DAA Germany has developed – together with a wide European partnership – a multimedia interface for interactive learning of languages (specifically English) by the identified target group. The course has successfully been tested by five training institutions for the blind and visually impaired people in Germany. The project ELLVIS aimed to amplify the innovative results of the former project by transferring the methodology and the new designed technology to the involved partner countries (Italy, France and Romania). Each partner has adapted, modified and integrated the software (audio files for lessons, grammar instructions, instructions for using the software) taking into account the different difficulties of learning English by the target group of each mother language. Four language schools and three institutions and their schools for blind and visually impaired people worked together to achieve the objectives, namely creating, testing, validation and dissemination of results.

description: EL.LE