cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Young Planetary Nebulae in IPHAS
Creators: name: Viironen, K.
name: Mampaso, A.
name: Corradi, R. L. M.
name: Rodriguez, M.
name: Greimel, R.
name: Sabin, L.
name: Sale, S. E.
name: Unruh, Y.
name: Delgado-Inglada, G.
name: Drew, J.
name: Giammanco, C.
name: Groot, P.
name: Parker, Q. A.
name: Sokoloski, J.
name: Zijlstra, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We search for very small-diameter galactic planetary nebulae (PNe) representing the earliest phases of PN evolution. A recently published IPHAS catalogue of Ha-emitting stars provides a useful base for this study as all sources present in this catalogue must be of small angular diameter. The PN candidates are selected based on their location in two colour-colour diagrams: IPHAS (r' - Ha) vs. (r' - i'), and 2MASS (J - H) vs. (H - Ks). Spectroscopic follow-up has been carried out on a sample of candidates in order to confirm their nature. We present a total of 83 PN candidates. We were able to obtain spectra or find the classification from the literature for 35 candidates. Five of these objects are likely to be new PNe, including one large bipolar PN discovered serendipitously near an emission-line star. PN distances deduced from extinction-distance relations based on IPHAS field-star photometry are presented for the first time. These yield distance estimates for our objects in the range from 2 kpc to 6 kpc. From the data to hand, we conclude that four of the discovered objects are very probably young PNe.
description: 18 pages, 15 figures
Noncommutative N=1 super Yang-Mills, the Seiberg-Witten map and UV divergences
Creators: name: Martin, C. P.
name: Tamarit, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Classically, the dual under the Seiberg-Witten map of noncommutative U(N), {\cal N}=1 super Yang-Mills theory is a field theory with ordinary gauge symmetry whose fields carry, however, a θ-deformed nonlinear realisation of the {\cal N}=1 supersymmetry algebra in four dimensions. For the latter theory we work out at one-loop and first order in the noncommutative parameter matrix θ^{μν} the UV divergent part of its effective action in the background-field gauge, and, for N>=2, we show that for finite values of N the gauge sector fails to be renormalisable; however, in the large N limit the full theory is renormalisable, in keeping with the expectations raised by the quantum behaviour of the theory's noncommutative classical dual. We also obtain --for N>=3, the case with N=2 being trivial-- the UV divergent part of the effective action of the SU(N) noncommutative theory in the enveloping-algebra formalism that is obtained from the previous ordinary U(N) theory by removing the U(1) degrees of freedom. This noncommutative SU(N) theory is also renormalisable.
description: 33 pages, 4 figures. Version 2: Unnecessary files removed. Version 3: New types of field redefinitions were considered, which make the large N U(N) and the SU(N) theories renormalisable. The conclusions for U(N) with finite N remain unchanged. Version 4: Corrected mistyped equations, minor revisions
Magnetic fields of non-degenerate stars
Creators: name: Donati, JF
name: Landstreet, JD
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Magnetic fields are present in a wide variety of stars throughout the HR diagram and play a role at basically all evolutionary stages, from very-low-mass dwarfs to very massive stars, and from young star-forming molecular clouds and protostellar accretion discs to evolved giants/supergiants and magnetic white dwarfs/neutron stars. These fields range from a few microG (e.g., in molecular clouds) to TeraG and more (e.g., in magnetic neutron stars); in non-degenerate stars in particular, they feature large-scale topologies varying from simple nearly-axisymmetric dipoles to complex non-axsymmetric structures, and from mainly poloidal to mainly toroidal topology. After recalling the main techniques of detecting and modelling stellar magnetic fields, we review the existing properties of magnetic fields reported in cool, hot and young non-degenerate stars and protostars, and discuss our understanding of the origin of these fields and their impact on the birth and life of stars.
description: ARA&A 47 (in press) - 41 pages, 7 figures
Stop talking : inhibiting the production effect
Creators: name: Bain-Williams, ZJ
Publisher: name: University Of Tasmania
Year: 2023

description: The Production Effect is a phenomenon where produced words are remembered more accurately than non-produced words. This thesis explores the potential for inhibited words to elicit a similar effect as measured by recognition accuracy. Twenty adults in Australia participated in an experimental study, with four removed from analysis due to experimental error. The remaining 16 participants were aged 18 to 25, \\(M\\) = 21.38, \\(SD\\) = 2.13. Participants were divided into two groups. They were asked to study a list of 82 verbs before completing a subsequent old-new and know-familiar recognition test. In the experimental group, participants spoke items in blue text unless an X appeared, which prompted them to inhibit their response. In the control group, participants were instructed to speak blue items and silently read white items. The differences in accuracy between spoken, inhibited, and silently read words were compared using three two-by-two ANOVAs. Inhibited items did not significantly differ from spoken or silently read items in terms of accuracy. These results suggest that the Production Effect may only be elicited when items are produced. There were several potential confounds influencing results, particularly in regard to how the paradigm was constructed.
A Higher Order Godunov Method for Radiation Hydrodynamics: Radiation Subsystem
Creators: name: Sekora, Michael
name: Stone, James
Publisher: name: arXiv
Year: 2009
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A higher order Godunov method for the radiation subsystem of radiation hydrodynamics is presented. A key ingredient of the method is the direct coupling of stiff source term effects to the hyperbolic structure of the system of conservation laws; it is composed of a predictor step that is based on Duhamel's principle and a corrector step that is based on Picard iteration. The method is second order accurate in both time and space, unsplit, asymptotically preserving, and uniformly well behaved from the photon free streaming (hyperbolic) limit through the weak equilibrium diffusion (parabolic) limit and to the strong equilibrium diffusion (hyperbolic) limit. Numerical tests demonstrate second order convergence across various parameter regimes.
description: 19 pages, 5 figures, 6 tables
Modeling of the anode side of a direct methanol fuel cell with analytical solutions
Creators: name: Mosquera, Martín A.
name: Lizcano-Valbuena, William H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, analytical solutions were derived (for any methanol oxidation reaction order) for the profiles of methanol concentration and proton current density by assuming diffusion mass transport mechanism, Tafel kinetics, and fast proton transport in the anodic catalyst layer of a direct methanol fuel cell. An expression for the Thiele modulus that allows to express the anodic overpotential as a function of the cell current, and kinetic and mass transfer parameters was obtained. For high cell current densities, it was found that the Thiele modulus ($ϕ^2$) varies quadratically with cell current density; yielding a simple correlation between anodic overpotential and cell current density. Analytical solutions were derived for the profiles of both local methanol concentration in the catalyst layer and local anodic current density in the catalyst layer. Under the assumptions of the model presented here, in general, the local methanol concentration in the catalyst layer cannot be expressed as an explicit function of the position in the layer. In spite of this, the equations presented here for the anodic overpotential allow the derivation of new semi-empirical equations.
description: 18 pages, 6 figures, submitted to Electrochimica Acta
Top-down and bottom-up : cognitive mechanisms in drug dependence and treatment outcomes
Creators: name: Besterwitch, JLS
Publisher: name: University Of Tasmania
Year: 2023

description: Particular cognitive deficits such as attentional biases toward drug related stimuli (driven by low-level 'bottom-up' processes) and problems with inhibiting actions (executive or 'top-down' processes), appear to be associated with substance use disorder. Study used two experiments (One: 7 participants with mean age of 41.7 years, two: 67 participants with mean age 34.3 years) to test the theoretical framework proposed by Manning et. al. (2017). Poorer 'top-down' inhibitory cognition and greater 'bottom-up' drives: (according to the model) should be related to severity of substance use disorder (predicted by the model) correlate with poorer treatment outcomes (early drop out; tested at week 4 and 12). The study findings showed mixed evidence to support the theory underpinning the framework with significant bottom-up compulsivity measure but not top-down response inhibition. The predictions made by the framework were not supported. Previous studies analyzing the relation between cognition and treatment outcomes failed to control for psychological distress and readiness to change. After controlling for other key correlates of treatment dropout (anxiety, and readiness to change), top-down (SST) measure was significantly associated with treatment outcomes. The findings highlight the multifaceted way in which people can remain stuck in substance use disorder.
Toward better numerical integration
Creators: name: Immerzeel, Gerrit
Publisher: name: University of British Columbia
Year: 2011

description: Romberg's quadrature is investigated with special emphasis on its use in automatic integration. Section 1 reproduces many of the facts known about Romberg's method and investigates the selection of stepsize. Section 2 discusses the integration of singular integrands, with emphasis on detecting algebraic endpoint singularities and the reliability of methods used for handling them. Section 3 looks at CADRE, the first automatic integration routine published based on the adaptive use of Romberg's method. It is adapted for use on the IBM 360 and is compared to SQUANK, an adaptive Simpson routine already available in the U.B.C. program library.
Nonlinear Schrödinger Equation with Spatio-Temporal Perturbations
Creators: name: Mertens, Franz G.
name: Quintero, Niurka R.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We investigate the dynamics of solitons of the cubic Nonlinear Schrödinger Equation (NLSE) with the following perturbations: non-parametric spatio-temporal driving of the form $f(x,t) = a \exp[i K(t) x]$, damping, and a linear term which serves to stabilize the driven soliton. Using the time evolution of norm, momentum and energy, or, alternatively, a Lagrangian approach, we develop a Collective-Coordinate-Theory which yields a set of ODEs for our four collective coordinates. These ODEs are solved analytically and numerically for the case of a constant, spatially periodic force $f(x)$. The soliton position exhibits oscillations around a mean trajectory with constant velocity. This means that the soliton performs, on the average, a unidirectional motion although the spatial average of the force vanishes. The amplitude of the oscillations is much smaller than the period of $f(x)$. In order to find out for which regions the above solutions are stable, we calculate the time evolution of the soliton momentum $P(t)$ and soliton velocity $V(t)$: This is a parameter representation of a curve $P(V)$ which is visited by the soliton while time evolves. Our conjecture is that the soliton becomes unstable, if this curve has a branch with negative slope. This conjecture is fully confirmed by our simulations for the perturbed NLSE. Moreover, this curve also yields a good estimate for the soliton lifetime: the soliton lives longer, the shorter the branch with negative slope is.
description: 21 figures
The cognitive load of lies
Creators: name: Bird, LA
Publisher: name: University Of Tasmania
Year: 2023

description: Deception is thought to involve greater cognitive load than honesty, and in practice has been shown to increase reaction time (RT). However, this has only been measured with closed-questions delivered by a computer. We employed a dual-task methodology, the Detection Response Task (DRT), to assess cognitive load in a live, open-question interview. The DRT requires participants to press a button in response to a stimulus every 3-5 seconds while simultaneously performing a primary task. In this case, 44 first year Psychology students (29 females) aged 18-66 (`M` = 27.1 years, SD = 10.6) watched 26 short films and constructed and delivered narrative lies about their content to an interviewer. Supporting our hypothesis that deception is cognitively harder than telling the truth, participants were significantly slower to respond to the DRT when constructing (`M` = 385, 95%CI[380,391], `p` <.05) and delivering (`M` = 541, 95%CI[531,550], `p` <.001) lies in the first half of the experiment. When lying, they were more likely to fail to respond to the stimulus altogether (by 0.3%) and took longer to start answering (by 33 ms). Further inquiry of the DRT in deception research may improve deception theory and refine lie-detection techniques.
Diagnosing Soil Salinity
Creators: name: Bower, C. A.
name: Bower, C. A.
Publisher: name: Unknown
Year: 1963
Subjects: Crop Production/Industries

description: Excerpts from the report: The proper management and treatment of salt-affected soils depends upon accurate knowledge of the nature and severity of the salt problem at hand. Inadequate information may lead farmers to plant salt-sensitive crops where they should plant salt-tolerant ones, or to fail to apply chemical amendments where they are needed. Visual observations of soils and of plants growing on them are rarely sufficient to diagnose a salinity problem adequately. Reliable diagnosis of salinity requires the right kind of laboratory tests on samples that are truly representative of soils. Such sampling and testing involves some time and moderate expenses, but experience has shown that this procedure pays good dividends.
Modified relativistic rotator. Toward classical Fundamental Dynamical Systems consisting of a worldline and a single spinor
Creators: name: Bratek, Łukasz
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Author shows how to construct a class of Lagrangians for relativistic dynamical systems described by position and a single spinor. One arrives to it by imposing three requirements: 1) Hamilton action should be reparametrization invariant, 2) the number of dimensional parameters should be minimal, 3) the spinor phase should be a cyclic variable. In more detail are discussed those of the the Lagrangians which depend on the spinor's null vector and its worldline. An interesting relation between a Hessian determinant and Casimir invariants for such objects leads to the conclusion that no fundamental objects of this kind exist with worldlines uniquely determinable from the Hamilton action and the initial conditions. This unexpected result poses the general question about existence of classical fundamental dynamical systems with well posed Cauchy problem. [A relativistic dynamical system is said to be fundamental if its Casimir invariants are parameters, not constants of motion]
description: A manuscript prepared for Proceedings of the XLIX Cracow School of Theoretical Physics, May/June 2009, Zakopane, Poland
Observations of a rotating macrospicule associated with an X-ray jet
Creators: name: Kamio, S.
name: Curdt, W.
name: Teriaca, L.
name: Inhester, B.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We attempt to understand the driving mechanism of a macrospicule and its relationship with a coronal jet. We study the dynamics of a macrospicule and an associated coronal jet captured by multi-spacecraft observations. Doppler velocities both in the macrospicule and the coronal jet are determined by EIS and SUMER spectra. Their temporal evolution is studied using X-ray and He II 304 images. A blueshift of -120+/-15 km/s is detected on one side of the macrospicule, while a redshift of 50+/-6 km/s is found at the base of the other side. The inclination angle of the macrospicule inferred from a stereoscopic analysis with STEREO suggests that the measured Doppler velocities can be attributed to a rotating motion of the macrospicule rather than a radial flow or an expansion. The macrospicule is driven by the unfolding motion of a twisted magnetic flux rope, while the associated X-ray jet is a radial outflow.
description: 4 pages, 3 figures, accepted for publication in A&A
Pure Time Theory: Unifying Quantum and Cosmic Observations
Creators: name: Allou, Essam
Publisher: name: Zenodo
Year: 2025
Subjects: Pure Time Theory
PTT
scalar temporal field
T_relax
quantum entanglement
galactic rotation curves
observer effect
temporal curvature
emergent mass
harmonic quantization
spiritual synchrony
Cosmic anomalies
Quantum synchronization
Divine order
temporal desynchronization
dark matter reinterpretation
quantum coherence
superluminal correlation
time-based metric emergence
gravitational waves reinterpretation
causal structure of time
intentionality and measurement
field-based ontology
time-field-based ontology

description: Recent breakthroughs in both quantum physics and observational cosmology reveal anomalies that resist traditional interpretation. This article presents a systematic analysis of five key discoveries through the lens of the Pure Time Theory (PTT). Using the scalar time field T_relax as the ontological foundation, we show how each anomaly emerges as a natural consequence of temporal gradients, without requiring exotic matter or spacetime distortions. The analysis affirms three fundamental postulates of PTT: (1) the primacy of time over space, (2) density-time coupling, and (3) the temporal origin of all quantized structure.

This reinterpretation is grounded in several recent empirical findings, with source articles referenced in the introduction.
The effect of alcohol-intoxication on emotion perception and emotion perception ability: investigating possible gender differences
Creators: name: James, C
Publisher: name: University Of Tasmania
Year: 2023

description: Alcohol-related violence is as an issue of high concern for society, where alcohol-related violence has shown to be considerably higher in males relative to females. Although a relationship between alcohol and aggression has been established, the underlying social cognitive mechanism are still not fully understood. This study sought to investigate possible gender differences in emotion recognition under the influence of an acute administration of high-dose alcohol, across a range of basic emotion types and intensity levels. Fifty-five males and fifty-five females were quasi-randomly assigned to either a placebo or alcohol-intoxication condition (BrAC mean = 0.074%, SD = .019). Emotion perception abilities were measured using the Emotion Recognition Task (ERT). The study found there were no gender differences in emotion recognition ability in the alcohol or placebo condition. However, there were subtle differences in the pattern of deficits within each gender, specifically females were worse at identifying fear and sadness whilst intoxicated, whereas males were worse at detecting fear, but not sadness. Overall it appears that a person's gender has little influence on social perception abilities when intoxicated, and thus may not be an underlying factor contributing to higher rates of alcohol-related violence or other negative social behaviours among males.
Quasisymmetric Schur functions
Creators: name: Haglund, J.
name: Luoto, K.
name: Mason, S.
name: van Willigenburg, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E05, 05E10, 33D52

description: We introduce a new basis for quasisymmetric functions, which arise from a specialization of nonsymmetric Macdonald polynomials to standard bases, also known as Demazure atoms. Our new basis is called the basis of quasisymmetric Schur functions, since the basis elements refine Schur functions in a natural way. We derive expansions for quasisymmetric Schur functions in terms of monomial and fundamental quasisymmetric functions, which give rise to quasisymmetric refinements of Kostka numbers and standard (reverse) tableaux. From here we derive a Pieri rule for quasisymmetric Schur functions that naturally refines the Pieri rule for Schur functions. After surveying combinatorial formulas for Macdonald polynomials, including an expansion of Macdonald polynomials into fundamental quasisymmetric functions, we show how some of our results can be extended to include the $t$ parameter from Hall-Littlewood theory.
description: 30 pages; references added; new subsections on transition matrices, how to include the $t$ parameter from Hall-Littlewood theory and further avenues; new survey of combinatorial formulas for Macdonald polynomials, including an expansion of Macdonald polynomials into fundamental quasisymmetric functions
AN ENHANCED SYSTEM FOR PREDICTING HEART STROKE USING MACHINE LEARNING
Creators: name: S MUTHUKUMAR
name: Dr. KALAI VANI YS
name: HEMAL BABU H
name: MALATHI S
name: Dr. D. MENAGA
name: S ABHIRAMI
Publisher: name: Zenodo
Year: 2025
Subjects: Naive Bayes, Random Forest, Decision Tree Classifier, Machine Learning, Predictive Analysis.

description: Abstract

Globally, heart disease and strokes are now among the top causes of death, particularly for adults. According to the WHO's data analysis, 17.9 million persons worldwide are estimated to have died from cardiovascular disease (CVD) in 2019. Heart attacks and strokes were responsible for almost 85% of all deaths. Hence, it is essential to identify cardiovascular diseases (CVD) so that the right treatments can be given as soon as feasible. Age, gender, hypertension, heart disease, type of work, type of residence, average blood glucose level, BMI, and smoking status were the parameters we collected from the Kaggle dataset, and predictions were made using machine learning algorithms like Nave Bayes, Random Forest, and Decision Tree Classifier. Many models were compared in a predictive analysis, and the Decision Theory classifier was determined to be the most accurate of them, with an accuracy of 97.6%.
GESTÃO JURÍDICA DE RISCO TRABALHISTA NO AGRONEGÓCIO
Creators: name: SANTOS, Maxwel Araújo
Publisher: name: Zenodo
Year: 2023
Subjects: Agronegócio. Gestão de Riscos. Trabalhista. compliance

description: A pesquisa tem como tema a Gestão Jurídica de Riscos, com um recorte nos Riscos Trabalhista na atividade Agroindustrial. O problema identificado é abordar como a adoção de processos de Gestão de riscos podem trazer resultados positivos na redução de acidentes de trabalho nas Agroindústrias, especialmente com a operacionalização de Agrotóxicos. O objetivo geral da pesquisa foi apresentar soluções modernas e inovadoras, de acordo com a legislação pátria, na busca de se ter uma boa Gestão dos Riscos trabalhistas nas Agroindústrias. A fim de acalcar o propósito fim, tem como objetivos específicos estudar o que é o Direito do Agronegócio e como ele está inserido no sistema jurídico, estudar o que é a Gestão de Riscos Agrícolas, e mais especificamente a Gestão de Riscos de pessoas, o qual inclui-se os riscos trabalhistas, bem como, apresentar soluções jurídicas a fim se ter uma Gestão dos Riscos. O artigo é estruturado em introdução, referencial teórico, conclusão e referências. A metodologia utilizada foi a pesquisa teórica, legislativa e bibliográfica. Hipoteticamente, sustenta-se que a adoção de processos conhecidos por compliance é a melhor alternativa na Gestão de Riscos Trabalhistas nas Agroindústrias. O resultado da pesquisa aponta ser necessário a conscientização do empregador rural sobre essa necessidade. Por fim, concluindo que a Gestão de Risco, por intermédio do compliance é a sim a melhor alternativa, entretanto, ainda pouco difundida entre as empresas rural, especialmente as de menor porte.
On the full quantum trispectrum in multi-field DBI inflation
Creators: name: Mizuno, Shuntaro
name: Arroja, Frederico
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the leading order connected four-point function of the primordial curvature perturbation coming from the four-point function of the fields in multi-field DBI inflation models. We confirm that the consistency relations in the squeezed limit and in the counter-collinear limit hold as in single field models thanks to special properties of the DBI action. We also study the momentum dependence of the trispectra coming from the adiabatic, mixed and purely entropic contributions separately and we find that they have different momentum dependence. This means that if the amount of the transfer from the entropy perturbations to the curvature perturbation is significantly large, the trispectrum can distinguish multi-field DBI inflation models from single field DBI inflation models. A large amount of transfer $T_{\mathcal{RS}} \gg 1 $ suppresses the tensor to scalar ratio $r \propto T_{\mathcal{RS}}^{-2}$ and the amplitude of the bispectrum $f_{NL}^{equi} \propto T_{\mathcal{RS}}^{-2}$ and so it can ease the severe observational constraints on the DBI inflation model based on string theory. On the other hand, it enhances the amplitude of the trispectrum $τ_{NL}^{equi} \propto T_{\mathcal{RS}}^2 f_{NL}^{equi 2}$ for a given amplitude of the bispectrum.
description: 22 pages, 10 figures, minor corrections, references are added, published version in PRD
Can Everett be Interpreted Without Extravaganza?
Creators: name: Marchildon, Louis
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Everett's relative states interpretation of quantum mechanics has met with problems related to probability, the preferred basis, and multiplicity. The third theme, I argue, is the most important one. It has led to developments of the original approach into many-worlds, many-minds, and decoherence-based approaches. The latter especially have been advocated in recent years, in an effort to understand multiplicity without resorting to what is often perceived as extravagant constructions. Drawing from and adding to arguments of others, I show that proponents of decoherence-based approaches have not yet succeeded in making their ontology clear.
description: Succinct analysis forthcoming in Found. Phys
Magnetic field controlled electron transport in a thin cylinder
Creators: name: Maiti, Santanu K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore electron transport in a thin cylinder, attached to two semi-infinite one-dimensional metallic electrodes, in the presence of both longitudinal and transverse magnetic fluxes. A simple tight-binding model is used to describe the system, where all the calculations are performed in the Green's function formalism. Quite surprisingly it is observed that, typical current amplitude oscillates as a function of the transverse magnetic flux, associated with conductance-energy characteristics, showing $Nϕ_0$ flux-quantum periodicity, where $N$ and $ϕ_0$ $(=ch/e)$ correspond to the system size and elementary flux-quantum respectively. The analysis might be helpful in fabricating mesoscopic switching devices, where a particular response can be delayed by tuning the system size $N$.
description: 9 pages, 7 figures
A discrete nonetheless remarkable brick in de Sitter: the "massless minimally coupled field"
Creators: name: Gazeau, Jean-Pierre
name: Youssef, Ahmed
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Over the last ten years interest in the physics of de Sitter spacetime has been growing very fast. Besides the supposed existence of a "de sitterian period" in inflation theories, the observational evidence of an acceleration of the universe expansion (interpreted as a positive cosmological constant or a "dark energy" or some form of "quintessence") has triggered a lot of attention in the physics community. A specific de sitterian field called "massless minimally coupled field" (mmc) plays a fundamental role in inflation models and in the construction of the de sitterian gravitational field. A covariant quantization of the mmc field, `a la Krein-Gupta-Bleuler was proposed in [1]. In this talk, we will review this construction and explain the relevance of such a field in the construction of a massless spin 2 field in de Sitter space-time.
description: Proceedings of the XXVII Colloquium on Group Theoretical Methods in Physics, Yerevan, August 2008
Lognormal variability in BL Lacertae
Creators: name: Giebels, Berrie
name: Degrange, Bernard
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: X-ray data from the blazar BL Lac are used to investigate the nature of its variability, and more precisely the flux dependency of the variability and the distribution of fluxes. The variations in the flux are found to have a lognormal distribution and the average amplitude of variability is proportional to the flux level. BL Lac is the first blazar in which lognormal X-ray variability is clearly detected. Lognormal variability in X-ray light curves, probably related to accretion disk activity, has been discovered in various compact systems, such as Seyfert galaxies and X-ray binaries. The light curve is orders of magnitude less variable than other blazars, with few bursting episodes. If this defines a specific state of the source, then the lognormality might be the imprint of the accretion disk on the jet, linking for the first time accretion and jet properties in a blazar.
description: Accepted for Astronomy & Astrophysics
title: Dr. Kenneth E. Kinnamon, DVM, MS, PhD, COL, USA (Ret.) Oral History Interview Transcript Part 5
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2009
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USU Oral History Interview Transcript
Dr. Kenneth E. Kinnamon, DVM, MS, PhD, COL, USA (Ret.)
Professor, F. Edward Hebert School of Medicine
Director, Multidiscipline Laboratories
Chief Operations Officer
Assistant Dean for Instructional and Research Support
Director, Centers for Preventive Medicine and Public Health (CPMPH)
11-16-2009
Interviewed by Emelie Rubin
Computer-assisted mass spectrometry and its application to rubidium-strontium geochronology
Creators: name: Blenkinsop, John
Publisher: name: University of British Columbia
Year: 2011

description: An on-line data acquisition system, centred around an Interdata Model 4 computer, has been designed for a mass spectrometer used primarily for rubidium-strontium geochron-ology. The digital system has been used for an investigation of the ages of certain gneisses within the southern Omineca Crystalline Belt of British Columbia. With the system, it has proved possible to achieve a precision of 0.02% (95% confidence limit) in the measurement of Sr⁸⁷/Sr⁸⁶ ratios, a precision which was necessary for the investigation described. The system employs a digital voltmeter at the mass spectrometer for analog-digital conversion of the ion beam. The "conversion complete" signal from the voltmeter is used to interrupt the computer. At each interrupt, the computer reads the mass spectrometer, filters the voltmeter reading, and adjusts the magnet scan speed as required. At the end of each mass spectrum, the data are processed and the isotopic ratios are calculated. They can be output to a digital display at the mass spectrometer as requested by the operator. Rock samples from the gneisses were obtained from areas near Revelstoke, Quesnel Lake, and Malton Range in order to test suggestions that they represent Precambrian crystalline basement. Samples from the first two locations exhibited a restricted range of Rb/Sr ratios, and required the precise determination of their Sr⁸⁷/Sr⁸⁶ ratios in order to be determined. All areas appear to have experienced an event about 700 m.yr. ago, and are, therefore, Precambrian in age. The event can possibly be correlated with the East Kootenay Orogeny. In addition, the gneiss at Revelstoke is clearly older than its surrounding metasediments, an observation which supports the thesis of J. V. Ross that it was tectonically emplaced. This latter finding has regional implications in that Precambrian crystalline basement has apparently been involved in the deformation of the region.
Clinical implications of cultural differences in factors influencing resilience following natural disaster : a systematic review
Creators: name: S C, Anbarasu
Publisher: name: University Of Tasmania
Year: 2023

description: Natural disasters such as hurricanes, tsunamis, floods and earthquakes not only damage and destroy the land, sea, forest and other resources vital to peoples' livelihoods but also impact the lives of the victims in an adverse way: physically, mentally, emotionally and economically. In the immediate aftermath of disasters, unaffected individuals and organisations often feel compelled to help in whatever capacity may be available to them - including the provision of psychosocial interventions. However, there are also risks involved with providing psychosocial interventions including unintentional harm due to \disaster tourism\" or \"parachuting\". It is not uncommon for those providing psychosocial interventions to violate cultural and social norms in ways that negatively impact the recovery process and potentially impede resilient outcomes. Hence the aim of the review was to identify and describe the psychological consequences the types of interventions as well as resilience and coping skills of survivors of natural disasters namely emihquakes hurricane tsunami and flood across different cultures. Twelve studies were identified for this review and PTSD was the most common psychological consequence identified. Even though there were some differences in resilience and coping strategies of natural disaster survivors on a microenvironmental level social support appeared to be common. On a macro-systemic level community factors such as community services cultural factors spirituality and religion contributed to resilience across several cultures. However psychological interventions adopted varied across different cultures. In addition to understanding the culture spiritual and beliefs of the disaster survivors the importance of working with appropriate community operations and adopting culturally sensitive screening instruments in the future cannot be overlooked."
PROPOSTAS PARA GESTÃO ESCOLAR: Desafios e êxitos no gerenciamento de uma escola estadual em Uberaba-MG
Creators: name: AIRES, Mônica Aparecida Martins Silva
name: AIRES, Nilcélio de Mello
name: GARCEZ, Andrezza Rosa
Publisher: name: Zenodo
Year: 2023
Subjects: Cotidiano escolar. Gestor. Trabalho

description: O objetivo do estudo é relatar uma entrevista com um gestor escolar na cidade de Uberaba-MG acerca de algumas questões pertinentes ao seu cotidiano de trabalho; além de uma experiência exitosa que ele participou e/ou desenvolveu na escola e dentre outras perguntas quais as principais dificuldades enfrentadas no ambiente escolar. A entrevista ocorreu de forma virtual onde foi possível colher as informações necessárias em um bate-papo muito proveitoso. Com base em um estudo teórico em Gil (2013) e Paro (2010), a análise apresenta respostas que indicam a importância de uma gestão democrática e eficaz. Assim sendo, evidenciar-se que a realidade nas escolas estaduais de Uberaba bem como de outras cidades se apresentam de forma semelhante e corrobora com o contexto expresso em outras instituições pois, os colaboradores técnicos da secretaria escolar recebiam as orientações das respectivas superintendências de educação e transmitiam aos gestores, que deviam executá-las, muitas vezes em curto espaço de tempo, sempre mantendo uma gestão de qualidade em todos os aspectos.
Formation of High-redshift (z>6) Quasars Driven by Nuclear Starbursts
Creators: name: Kawakatu, Nozomu
name: Wada, Keiichi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Based on the physical model of a supermassive black hole (SMBH) growth via gas accretion in a circumnuclear disk (CND) proposed by Kawakatu & Wada (2008), we describe the formation of high-$z$ ($z > 6$) quasars (QSOs) whose BH masses are M_{BH}> 10^{9} M_{\odot}. We derive the necessary conditions to form QSOs at z > 6 by only gas accretion: (i) A large mass supply with M_{sup} > 10^{10}M_{\odot} from host galaxies to CNDs, because the final BH mass is only 1-10% of the total supplied mass from QSO hosts. (ii) High star formation efficiency for a rapid BH growth. We also find that if the BH growth is limited by the Eddington accretion, the final BH mass is greatly suppressed. Thus, the super-Eddington growth is required for the QSO formation. The evolution of the QSO luminosity depends on the redshift z_{i} at which accretion onto a seed BH is initiated. In other words, the brighter QSOs at z >6 favor the late growth of SMBHs (i.e., z_{i}=10) rather than early growth (i.e., z_{i}=30). Moreover, we predict the observable properties and the evolution of QSOs at z >6. In a QSO phase, there should exist a stellar rich massive CND, whose gas mass is about 10% of the dynamical mass inside 0.1-1 kpc}. On the other hand, in a phase where the BH grows (i.e., a proto-QSO phase), the proto-QSO has a gas rich massive CNDs whose gas mass is comparable to the dynamical mass (abridged).
description: 12 pages, 10 pages, accepted by ApJ
Burnout Among Occupational Therapy Practitioners from Diverse Backgrounds: A Scoping Review Protocol
Creators: name: Rubio, Kaye
name: Bowyer, Patricia
name: Goffredo, Christopher
name: Russell Bliss, Joanna
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 420104
subject: Occupational therapy

description: The scoping review aims to investigate and include literature that looks at the experience of burnout among occupational therapy practitioners (OTPs) from diverse backgrounds.The review will address the following research question:What is known in the existing literature about burnout among occupational therapy practitioners from diverse backgrounds?
High-fidelity fast quantum transport with imperfect controls
Creators: name: Murphy, Michael
name: Jiang, Liang
name: Khaneja, Navin
name: Calarco, Tommaso
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Effective transport of quantum information is an essential element of quantum computation. We consider the problem of transporting a quantum state by using a moving potential well, while maintaining the encoded quantum information. In particular, we look at a set of cases where the input control defining the position of the potential well is subject to different types of distortion, each of which is motivated by experimental considerations. We show that even under these conditions, we are able to perfectly transfer the quantum information non-adiabatically over any given distance.
description: 4 pages, 4 figures
Resonant stripping as the origin of dwarf spheroidal galaxies
Creators: name: D'Onghia, Elena
name: Besla, Gurtina
name: Cox, Thomas J.
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dwarf spheroidal galaxies are the most dark matter dominated systems in the nearby Universe and their origin is one of the outstanding puzzles of how galaxies form. Dwarf spheroidals are poor in gas and stars, making them unusually faint, and those known as ultra-faint dwarfs have by far the lowest measured stellar content of any galaxy. Previous theories require that dwarf spheroidals orbit near giant galaxies like the Milky Way, but some dwarfs have been observed in the outskirts of the Local Group. Here we report simulations of encounters between dwarf disk galaxies and somewhat larger objects. We find that the encounters excite a process, which we term ``resonant stripping'', that can transform them into dwarf spheroidals. This effect is distinct from other mechanisms proposed to form dwarf spheroidals, including mergers, galaxy-galaxy harassment, or tidal and ram pressure stripping, because it is driven by gravitational resonances. It may account for the observed properties of dwarf spheroidals in the Local Group, including their morphologies and kinematics. Resonant stripping predicts that dwarf spheroidals should form through encounters, leaving detectable long stellar streams and tails.
description: Accepted as a Letter to Nature. A press release will be issued at the time of publication
The interactive effect of physical activity and APOE-‚àÜv™4 on cognitive function in older adults
Creators: name: Marris-Smith, RL
Publisher: name: University Of Tasmania
Year: 2023

description: The purpose of this study was to examine the relationship between physical activity (PA) and the APOE-‚àÜv™4 on cognitive functioning in cognitively normal older adults. Two hundred participants (mean age = 64.35 years old, male N = 61, female N = 139) estimated their average PA, underwent genetic testing, and completed a battery of neurocognitive tests assessing executive functioning, long-term memory, learning, and working memory. A cross-sectional between subjects 2 (APOE-‚àÜv™4 carrier status: carrier, non-carrier) x 2 (Physical activity: low, high) ANCOVA (age as covariate) was run for each cognitive test. Results revealed no significant main effects or significant interactions between PA and APOE-‚àÜv™4 carrier status across any cognitive domains. These results were contrary to the hypotheses. It was concluded that the protective effect of PA, and the risk effect of APOE-‚àÜv™4 that is present in cases of dementia may not have an effect on non-pathological cognitive decline. Future large-scale research is required to determine whether this is a true effect, or due to methodological limitations. Future research may benefit from the use of an objective measure of PA, inclusion of a measure of global cognitive functioning, and the use of a PA intervention or longitudinal design.
Isgur-Wise functions and unitary representations of the Lorentz group : the baryon case j = 0
Creators: name: Yaouanc, A. Le
name: Oliver, L.
name: Raynal, J. -C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a group theoretical method to study Isgur-Wise functions. A current matrix element splits into a heavy quark matrix element and an overlap of the initial and final clouds, related to the IW functions, that contain the long distance physics. The light cloud belongs to the Hilbert space of a unitary representation of the Lorentz group. Decomposing into irreducible representations one obtains the IW function as an integral formula, superposition of irreducible IW functions with positive measures, providing positivity bounds on its derivatives. Our method is equivalent to the sum rule approach, but sheds another light on the physics and summarizes and gives all its possible constraints. We expose the general formalism, thoroughly applying it to the case j = 0 for the light cloud, relevant to the semileptonic decay Lambda_b -> Lambda_c + l + nu. In this case, the principal series of the representations contribute, and also the supplementary series. We recover the bound for the curvature of the j = 0 IW function xi_Lambda (w) that we did obtain from the sum rule method, and we get new bounds for higher derivatives. We demonstrate also that if the lower bound for the curvature is saturated, then xi_Lambda (w) is completely determined, given by an explicit elementary function. We give criteria to decide if any ansatz for the Isgur-Wise function is compatible or not with the sum rules. We apply the method to some simple model forms proposed in the literature. Dealing with a Hilbert space, the sum rules are convergent, but this feature does not survive hard gluon radiative corrections.
description: 70 pages
Manual and Automatic Alignment of I Promessi Sposi: Results and Open Issues (part 1)
Creators: name: Sprugnoli, Rachele
Publisher: name: Zenodo
Year: 2024

description: Presentation given at the conference "Aligned Translations for Digital Scholarly Editions: Methodologies, Methods, and Workflows" held in Rome on September 26th and 27th. 

Questa pubblicazione è stata realizzata da ricercatrice con contratto di ricerca cofinanziato dall’Unione europea - PON Ricerca e Innovazione 2014-2020 ai sensi dell’art. 24, comma 3, lett. a, della Legge 30 dicembre 2010, n. 240 e s.m.i. e del D.M. 10 agosto 2021 n. 1062.
Empirical validation of a model predicting depression, anxiety, and stress in the parents of children with autism
Creators: name: Bones, S
Publisher: name: University Of Tasmania
Year: 2023

description: Distress in the parents of children with Autism Spectrum Disorder (ASD) can detrimentally impact parent and child function, making the prediction of distress in this parental group particularly important. Model A, developed by Falk et al. (2014) demonstrates that the relationship between child-centric variables (child social/interpersonal deficits and externalised behaviour) with parental distress is mediated by parent-centric variables (socioeconomic support and maladaptive parental cognitions). However, this model has not been validated in subsequent populations. The current study recruited 252 parents of children aged 4-17 years, with and without ASD. Participants completed an online questionnaire, containing measures of child social/interpersonal deficits, externalised behaviour, maladaptive parental cognitions and socio-economic support. Using SEM, the model was found to be a good fit for parents of children with ASD. The model was also a good fit for the whole sample, providing preliminary evidence of universality. These results support the finding that parent-centric, rather than child-centric, variables are the best predictors of distress. Furthermore, these results suggest that Model A may effectively predict parental distress in general. It is argued that parental distress should be considered a key target when treating ASD, and that interventions should focus on the parent as well as the child.