cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Velocity-dependent interacting dark energy and dark matter with a Lagrangian description of perfect fluids
Creators: name: Jiménez, Jose Beltrán
name: Bettoni, Dario
name: Figueruelo, David
name: Pannia, Florencia A. Teppa
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a cosmological scenario where the dark sector is described by two perfect fluids that interact through a velocity-dependent coupling. This coupling gives rise to an interaction in the dark sector driven by the relative velocity of the components, thus making the background evolution oblivious to the interaction and only the perturbed Euler equations are affected at first order. We obtain the equations governing this system with the Schutz-Sorkin Lagrangian formulation for perfect fluids and derive the corresponding stability conditions to avoid ghosts and Laplacian instabilities. As a particular example, we study a model where dark energy behaves as a radiation fluid at high redshift while it effectively becomes a cosmological constant in the late Universe. Within this scenario, we show that the interaction of both dark components leads to a suppression of the dark matter clustering at late times. We also argue the possibility that this suppression of clustering together with the additional dark radiation at early times can simultaneously alleviate the $σ_8$ and $H_0$ tensions.
description: 22 pages, 12 figures, fixed minor typos
MPEC 2024-T218 : 2024 TM7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TM7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
NNLO predictions for the Higgs boson signal in the H->WW->lnu lnu and H->ZZ->4l decay channels
Creators: name: Grazzini, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider Standard Model Higgs boson production by gluon--gluon fusion in hadron collisions. We present a calculation of the next-to-next-to-leading order QCD corrections to the cross section in the H->WW->lnu lnu and H->ZZ->4l decay channels. The calculation is implemented in the parton level Monte Carlo program HNNLO and allows us to apply arbitrary cuts on the final state leptons and the associated jet activity. We present selected numerical results for the signal cross section at the LHC, by using all the nominal cuts proposed for the forthcoming Higgs boson search.
description: References added. Version published on JHEP
Transmission of low-energy scalar waves through a traversable wormhole
Creators: name: Azad, Bahareh
name: Loran, Farhang
name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the scattering of low-energy massless and massive minimally coupled scalar fields by an asymptotically flat traversable wormhole. We provide a comprehensive treatment of this problem offering analytic expressions for the transmission and reflection amplitudes of the corresponding effective potential and the absorption cross section of the wormhole. Our results, which are based on a recently developed dynamical formulation of time-independent scattering theory, apply to a large class of wormhole spacetimes including a wormhole with a sharp transition, the Ellis wormhole, and a family of its generalizations.
description: 21 pages, 3 figures, references added, accepted for publication in European Physical Journal C
Resolution des Internationalen Rates von Pax Christi zum ökumenischen Prozeß für Gerechtigkeit, Frieden und Bewahrung der Schöpfung
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 3 (1986): Ökumenische Rundschau, Band 35, Heft 3
title: Reactivity on Student On-Task Behavior: An Analysis of On-Task Operational Definitions and Observer Presence on Student Behavior
Creators: name: Fuell, Daria G.
Publisher: name: Utah State University
Year: 2024

description: This study examines student engagement during academic tasks, specifically investigating how the presence and type of observer affect student performance. The objective was to understand the influence of different observer conditions—no observer, an observer behind an observation window, a researcher in the session room, and a caregiver in the session room—on student behavior. Using a multi-element design, the study assessed three measures: active on-task behavior, passive on-task behavior, and academic work completion. The literature review identified a lack of recent research on how students respond to adult observers during academic tasks and highlighted the variability in definitions of engagement. To address these gaps, three elementary-aged students were observed in a controlled environment, with results showing noticeable differences in engagement across the various observer conditions. The findings suggest that the presence and type of observer influenced student behavior. Notably, students displayed higher levels of engagement when observed by unfamiliar or hidden observers compared to familiar ones or no observer at all. Additionally, the study revealed that the way engagement is defined—whether active or passive—can affect data collection and interpretation. The study faced several limitations, including a small sample size; the controlled environment, which may not accurately represent typical classroom settings; and brief observation periods, which may not capture the full range of student behaviors. Despite these limitations, the findings offer valuable insights for educators and researchers, emphasizing the importance of considering the impact of observers and the definitions of student on-task behavior in assessments and interventions.
Stability of flux vacua in the presence of charged black holes
Creators: name: Danielsson, Ulf H.
name: Johansson, Niklas
name: Larfors, Magdalena
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter we consider a charged black hole in a flux compactification of type IIB string theory. Both the black hole and the fluxes will induce potentials for the complex structure moduli. We choose the compact dimensions to be described locally by a deformed conifold, creating a large hierarchy. We demonstrate that the presence of a black hole typically will not change the minimum of the moduli potential in a substantial way. However, we also point out a couple of possible loop-holes, which in some cases could lead to interesting physical consequences such as changes in the hierarchy.
description: 14 pages. Published version
Exploring the molecular basis of dairy production and viability traits in Murciano-Granadina goats with genomic, metagenomic and transcriptomic approaches - Supplementary materials
Creators: name: Luigi Sierra, Maria Gracia
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 60408 Genomics

description: Annexes and supplementary materials of the PhD thesis entitled "Exploring the molecular basis of dairy production and viability traits in Murciano-Granadina goats with genomic, metagenomic and transcriptomic approaches ".
Gauge coupling and fermion mass relations in low string scale brane models
Creators: name: Gioutsos, D. V.
name: Leontaris, G. K.
name: Rizos, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the gauge coupling evolution in brane inspired models with $U(3) \times U(2) \times U(1)^N$ symmetry at the string scale. We restrict to the case of brane configurations with two and three abelian factors (N=2,3) and where only one Higgs doublet is coupled to down quarks and leptons and only one to the up quarks. We find that the correct hypercharge assignment of the Standard Model particles is reproduced for six viable models distinguished by different brane configurations. We investigate the third generation fermion mass relations and find that the correct low energy $m_b/m_τ$ ratio can be obtained for $b-τ$ Yukawa coupling equality at a string scale as low as $M_S \sim 10^3$ TeV.
description: 15 pages, 3 figures
Dislocation nucleation in the phase field crystal model
Creators: name: Skogvoll, Vidar
name: Skaugen, Audun
name: Angheluta, Luiza
name: Viñals, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use the phase field crystal model to study nucleation of edge dislocations in two dimensions under an applied stress field. A dislocation dipole nucleates under the applied stress, consistent with Burgers vector conservation. The phase field correctly accounts for elastic energy storage prior to nucleation, and for dissipative relaxation during the nucleation event. We show that a lattice incompatibility field is a sensitive diagnostic of the location of the nucleation event, and of the Burgers vector and slip direction of the dislocations that will be nucleated above threshold. A direct calculation of the phase field energy accurately correlates with the nucleation event, as signaled by the lattice incompatibility field. We show that a Schmid-like criterion concerning the resolved stress at the nucleation site correctly predicts the critical nucleation stress. Finally, we present preliminary results for a three-dimensional, body-centered cubic lattice. The phase field allows a direct computation of the lattice incompatibility tensor for both dislocation lines and loops.
description: 8 pages, 7 figures
Including stereoscopic information in the reconstruction of coronal magnetic fields
Creators: name: Wiegelmann, T.
name: Neukirch, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a method to include stereoscopic information about the three dimensional structure of flux tubes into the reconstruction of the coronal magnetic field. Due to the low plasma beta in the corona we can assume a force free magnetic field, with the current density parallel to the magnetic field lines. Here we use linear force free fields for simplicity. The method uses the line of sight magnetic field on the photosphere as observational input. The value of $α$ is determined iteratively by comparing the reconstructed magnetic field with the observed structures. The final configuration is the optimal linear force solution constrained by both the photospheric magnetogram and the observed plasma structures. As an example we apply our method to SOHO MDI/EIT data of an active region. In the future it is planned to apply the method to analyse data from the SECCHI instrument aboard the STEREO mission.
description: 18 pages, 7 figures
Aspects of arbitrarily oriented dipoles scattering in plane: short-range interaction influence
Creators: name: Koval, Eugene A.
name: Koval, Oksana A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The impact of the short-range interaction on the resonances occurrence in the anisotropic dipolar scattering in a plane was numerically investigated for the arbitrarily oriented dipoles and for a wide range of collision energies. We revealed the strong dependence of the cross section of the 2D dipolar scattering on the radius of short-range interaction, which is modeled by a hard wall potential and by the more realistic Lennard-Jones potential, and on the mutual orientations of the dipoles. We defined the critical (magic) tilt angle of one of the dipoles, depending on the direction of the second dipole for arbitrarily oriented dipoles. It was found that resonances arise only when this angle is exceeded. In contrast to the 3D case, the energy dependencies of the boson (fermion) 2D scattering cross section grows (is reduced) with an energy decrease in the absence of the resonances. We showed that the mutual orientation of dipoles strongly impacts the form of the energy dependencies, which begin to oscillate with the tilt angle increase, unlike the 3D dipolar scattering. The angular distributions of the differential cross section in the 2D dipolar scattering of both bosons and fermions are highly anisotropic at non-resonant points. The results of the accurate numerical calculations of the cross section agree well with the results obtained within the Born and eikonal approximations.
description: 8 figures
[Typed field notes]
Creators: name: Macaulay, Monica
name: Hinton, Leanne
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Typed version of associated original field notes, with handwritten corrections (formerly "1981" section donated Binder #1). See related bundles for original handwritten field notes.
Interdot Coulomb repulsion effect on the charge transport of parallel double single electron transistors
Creators: name: Kuo, David M. -T.
name: Li, P. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The charge transport behaviors of parallel double single electron transistors (SETs) are investigated by the Anderson model with two impurity levels. The nonequilibrium Keldysh Green's technique is used to calculate the current-voltage characteristics of system. For SETs implemented by quantum dots (QDs) embedded into a thin $SiO_2$ layer, the interdot Coulomb repulsion is more important than the interdot electron hopping as a result of high potential barrier height between QDs and $SiO_2$. We found that the interdot Coulomb repulsion not onlyleads to new resonant levels, but also creates negative differential conductances.
description: 12 pages, 7 figures
Probleme theologischer Ausbildung in der Dritten Welt am Beispiel Süd-Pazifik
Creators: name: Engel, Lothar
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 3 (1986): Ökumenische Rundschau, Band 35, Heft 3
Optical manipulation of electronic dimensionality in a quantum material
Creators: name: Duan, Shaofeng
name: Cheng, Yun
name: Xia, Wei
name: Yang, Yuanyuan
name: Xu, Chengyang
name: Qi, Fengfeng
name: Tang, Tianwei
name: Guo, Yanfeng
name: Qian, Weidong Luo Dong
name: Xiang, Dao
name: Zhang, Jie
name: Zhang, Wentao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Exotic phenomenon can be achieved in quantum materials by confining electronic states into two dimensions. For example, relativistic fermions are realised in a single layer of carbon atoms, the quantized Hall effect can result from two-dimensional (2D) systems, and the superconducting transition temperature can be enhanced significantly in a one-atomic-layer material. Ordinarily, 2D electronic system can be obtained by exfoliating the layered materials, growing monolayer materials on substrates, or establishing interfaces between different materials. Herein, we use femtosecond infrared laser pulses to invert the periodic lattice distortion sectionally in a three-dimensional (3D) charge density wave material, creating macroscopic domain walls of transient 2D ordered electronic states with exotic properties. The corresponding ultrafast electronic and lattice dynamics are captured by time- and angle-resolved photoemission spectroscopy and MeV ultrafast electron diffraction. Surprisingly, a novel energy gap state, which might be a signature of light-induced superconductivity, is identified in the photoinduced 2D domain wall near the surface. Such optical modulation of atomic motion is a new path to realise 2D electronic states and will be a new platform for creating novel phases in quantum materials.
description: 31 pages, 10 figures
Some Remarks on Replicated Simulated Annealing
Creators: name: Gripon, Vincent
name: Löwe, Matthias
name: Vermet, Franck
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Recently authors have introduced the idea of training discrete weights neural networks using a mix between classical simulated annealing and a replica ansatz known from the statistical physics literature. Among other points, they claim their method is able to find robust configurations. In this paper, we analyze this so-called "replicated simulated annealing" algorithm. In particular, we explicit criteria to guarantee its convergence, and study when it successfully samples from configurations. We also perform experiments using synthetic and real data bases.
Identities for Droplets with Circular Footprint on Tilted Surfaces
Creators: name: Dunlop, Francois
name: Fatollahi, Amir H.
name: Hajirahimi, Maryam
name: Huillet, Thierry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Exact mathematical identities are presented between the relevant parameters of droplets displaying circular contact boundary based on flat tilted surfaces. Two of the identities are derived from the force balance, and one from the torque balance. The tilt surfaces cover the full range of inclinations for sessile or pendant drops, including the intermediate case of droplets on a wall (vertical surface). The identities are put under test both by the available solutions of a linear response approximation at small Bond numbers as well as the ones obtained from numerical solutions, making use of the Surface Evolver software. The subtleties to obtain certain angle-averages appearing in identities by the numerical solutions are discussed in detail. It is argued how the identities are useful in two respects. First is to replace some unknown values in the Young-Laplace equation by their expressions obtained from the identities. Second is to use the identities to estimate the error for approximate analytical or numerical solutions without any reference to an exact solution.
description: v1: 22 pages, 10 figures. v2: Typos fixed
The $Z_{cs}(3985)$ as a threshold effect from the $\bar D_s^* D + \bar D_s D^*$ interaction
Creators: name: Ikeno, Natsumi
name: Molina, Raquel
name: Oset, Eulogio
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the $e^+ e^- \to K^+ ( D_s^{*-} D^0 + D_s^- D^{*0})$ reaction recently measured at BESIII, from where a new $Z_{cs}$ state has been reported. We study the interaction of $\bar D_s D^*$ with the coupled channels $J/ψK^-$, $K^{*-} η_c$, $D_s^- D^{*0}$, $D_s^{*-} D^0$ by means of an extension to the charm sector of the local hidden gauge approach. We find that the $D_s^- D^{*0}+ D_s^{*-} D^0$ combination couples to $J/ψK^-$ and $K^{*-} η_c$, but the $D_s^- D^{*0}- D_s^{*-} D^0$ combination does not. The coupled channels help to build up strength in the $D_s^- D^{*0}+ D_s^{*-} D^0$ diagonal scattering matrix close to threshold and, although the interaction is not strong enough to produce a bound state or resonance, it is sufficient to produce a large accumulation of strength at the $\bar D_s D^*$ threshold in the $e^+ e^- \to K^+ ( D_s^{*-} D^0 + D_s^- D^{*0})$ reaction in agreement with experiment.
description: 7 pages, 2 figures: The title is changed
Forward Neutral Pion Transverse Single Spin Asymmetries in p+p Collisions at \sqrt{s}=200 GeV
Creators: name: STAR Collaboration
name: Abelev, B. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report precision measurements of the Feynman-x dependence, and first measurements of the transverse momentum dependence, of transverse single spin asymmetries for the production of π^0 mesons from polarized proton collisions at \sqrt{s}=200 GeV. The x_F dependence of the results is in fair agreement with perturbative QCD model calculations that identify orbital motion of quarks and gluons within the proton as the origin of the spin effects. Results for the p_T dependence at fixed x_F are not consistent with pQCD-based calculations.
description: 6 pages, 4 figures
Managing and valuing coastal resources : an examination of the importance of local knowledge and surf breaks to coastal communities
Creators: name: Lazarow, Neil Sherman
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: HT395.A8 L39 2010
subject: Coastal zone management Australia
subject: Surfing Environmental aspects Australia
subject: Nature Effect of human beings on

description: v.1 Thesis -- v.2. Appendices
Entanglement in many-body eigenstates of quantum-chaotic quadratic Hamiltonians
Creators: name: Łydżba, Patrycja
name: Rigol, Marcos
name: Vidmar, Lev
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent Letter [Phys. Rev. Lett. 125, 180604 (2020)], we introduced a closed-form analytic expression for the average bipartite von Neumann entanglement entropy of many-body eigenstates of random quadratic Hamiltonians. Namely, of Hamiltonians whose single-particle eigenstates have random coefficients in the position basis. A paradigmatic Hamiltonian for which the expression is valid is the quadratic Sachdev-Ye-Kitaev (SYK2) model in its Dirac fermion formulation. Here we show that the applicability of our result is much broader. Most prominently, it is also relevant for local Hamiltonians such as the three-dimensional (3D) Anderson model at weak disorder. Moreover, it describes the average entanglement entropy in Hamiltonians without particle-number conservation, such as the SYK2 model in the Majorana fermion formulation and the 3D Anderson model with additional terms that break particle-number conservation. We extend our analysis to the average bipartite second Rényi entanglement entropy of eigenstates of the same quadratic Hamiltonians, which is derived analytically and tested numerically. We conjecture that our results for the entanglement entropies of many-body eigenstates apply to quadratic Hamiltonians whose single-particle eigenstates exhibit quantum chaos, to which we refer as quantum-chaotic quadratic Hamiltonians.
Accelerated Levi-Civita-Bertotti-Robinson Metric in D-Dimensions
Creators: name: Gurses, Metin
name: Sarioglu, Ozgur
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A conformally flat accelerated charge metric is found in an arbitrary dimension $D$. It is a solution of the Einstein-Maxwell-null fluid with a cosmological constant in $D \ge 4$ dimensions. When the acceleration is zero our solution reduces to the Levi-Civita-Bertotti-Robinson metric. We show that the charge loses its energy, for all dimensions, due to the acceleration.
description: Latex File, 12 pages
Quantum Formation of Topological Defects
Creators: name: Mukhopadhyay, Mainak
name: Vachaspati, Tanmay
name: Zahariade, George
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider quantum phase transitions with global symmetry breakings that result in the formation of topological defects. We evaluate the number densities of kinks, vortices, and monopoles that are produced in $d=1,2,3$ spatial dimensions respectively and find that they scale as $t^{-d/2}$ and evolve towards attractor solutions that are independent of the quench timescale. For $d=1$ our results apply in the region of parameters $λτ/m \ll 1$ where $λ$ is the quartic self-interaction of the order parameter, $τ$ is the quench timescale, and $m$ the mass parameter.
description: 20 pages, 16 figures, published version
title: Applying Implementation Supports to Professional Development to Improve Implementation of the Caught Being Good Game
Creators: name: Zimmerman, Dylan
Publisher: name: Utah State University
Year: 2024

description: Disruptive behavior in the classroom can cause challenges for both teachers and students, creating high levels of teacher stress and preventing students from accessing academic instruction. Training on evidence-based classroom management is often resource-intensive and has inconsistent impact on teacher behavior in the classroom. The purpose of this study was to investigate the impact of professional development on paraprofessionals' treatment fidelity of the Caught Being Good Game. We used a multiple baseline design to provide a tiered model of professional development to provide the least intensive level necessary to support implementation. Results indicate that all four teachers successfully implemented most components of the Caught Being Good Game following direct training, with the exception of verbal feedback. One teacher required implementation planning followed by post-session feedback to reach mastery, and the final teacher did not reach mastery. Student disruption reduced slightly when the Caught Being Good Game was in place. Social validity results suggest teachers and students found the game to be highly acceptable and effective.
Diffuse radio emission in a REFLEX cluster
Creators: name: Feretti, L.
name: Schuecker, P.
name: Boehringer, H.
name: Govoni, F.
name: Giovannini, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Deep Very Large Array radio observations are presented for the REFLEX clusters RXCJ0437.1+0043 and RXCJ1314.4-2515. They are at similar distance and show similar X-ray luminosity, but they are quite different in X-ray structure. Indeed RXCJ0437.1+0043 is regular and relaxed, whereas RXCJ1314.4-2515 is characterized by substructure and possible merging processes. The radio images reveal no diffuse emission in RXCJ0437.1+0043, and a complex diffuse structure in RXCJ1314.4-2515. The diffuse source in the latter cluster consists of a central radio halo which extends to the West toward the cluster periphery and bends to the North to form a possible relic. Another extended source is detected in the eastern cluster peripheral region. Although there could be plausible optical identifications for this source, it might also be a relic candidate owing to its very steep spectrum. The present results confirm the tight link between diffuse cluster radio sources and cluster merger processes.
description: Accepted for publication in A&A. Figures here have been degraded to reduce their size. A version with full resolution figures is available at http://www.ira.cnr.it/~lferetti/OUTGOING/papREFLEX.ps.gz
Weighted pluripotential theory on complex Kähler manifolds
Creators: name: Branker, Maritza M.
name: Stawiska, Malgorzata
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32U05, 32U35

description: We introduce a weighted version of the pluripotential theory on complex Kähler manifolds developed by Guedj and Zeriahi. We give the appropriate definition of a weighted pluricomplex Green function, its basic properties and consider its behaviour under holomorphic maps. We also establish a generalization of Siciak's H-principle.
description: Corrected proof of the domination principle, some notation uniformized, new references added
Workplace Violence Against Emergency Medical Services (EMS): A Prospective 12-Month Cohort Study Evaluating Prevalence and Risk Factors Within a Large, Multistate EMS Agency
Creators: name: McGuire, Sarayna S.
name: Bellolio, Fernanda
name: Buck, Bradley J.
name: Liedl, Chad P.
name: Stuhr, Dayne D.
name: Mullan, Aidan F.
name: Buffum, Mykell Ryan
name: Clements, Casey M.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: To determine the prevalence and associated risk factors of workplace violence (WPV) experienced by emergency medical services (EMS) clinicians across a large, multistate ground/air EMS agency. We used a prospective cohort study design from 1 December 2022 to 30 November 2023. A checkbox was added within the electronic medical record (EMR) asking staff to indicate whether WPV occurred. Patient characteristics, encounter (run), and crew factors were abstracted. Potential risk factors for WPV were assessed using logistic regression, with the occurrence of any form of violence as the primary outcome of interest. Models were both univariable, assessing each risk factor individually, and multivariable, assessing all risk factors together to identify independent factors associated with higher risk of WPV. Multivariable model results were reported using adjusted odds ratios (aORs) and 95% confidence intervals. A total of 102,632 runs were included, 95.7% (n = 98,234) included checkbox documentation. There were 843 runs (0.86 per 100 runs, 95% CI 0.80–0.92) identified by EMS clinicians as WPV having occurred, including verbal abuse (n = 482), physical assault (n = 142), and both abuse and assault (n = 219). Risk factors for violence included male patient gender (aOR 1.45, 95% CI 1.24–1.70, p < 0.001), Richmond Agitation-Sedation Scale (RASS) >1 (aOR 16.97, 95% CI 13.71–21.01, p < 0.001), and 9-1-1 runs to include emergent (P1; aOR 1.75, 95% CI: 1.17–2.63, p = 0.007) and urgent (P2; aOR 1.64, 95% CI 1.08–2.50, p = 0.021) priority, compared to P3/scheduled transfer or P4/trip requests. Factors associated with lower risk for violence included older patients (aOR per 10 years = 0.95, 95% CI 0.91–0.98, p = 0.007) and run time of day between 0601–1200 h compared to 0000–0600 h (aOR 0.67, 95% CI 0.51–0.88, p = 0.004). Only 2.7% of violent runs captured through the EMR were reported through official processes. Verbal and/or physical violence is recognized in nearly 1% of EMS runs. We recommend prioritizing WPV prevention and mitigation strategies around identified risk factors and simplifying the WPV reporting process in order to reduce staff administrative burden and encourage optimal capturing of violent events.
Observational Evidence of Accretion Disk-Caused Jet Precession in Galactic Nuclei
Creators: name: Lu, Ju-Fu
name: Zhou, Bo-Yan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the observational data of extragalactic radio sources tend to support the theoretical relationship between the jet precession period and the optical luminosity of the sources, as predicted by the model in which an accretion disk causes the central black hole to precess.
description: 13 pages, 1 figure, accepted for publication in ApJ Letters
Visual contact estimation
Creators: name: McCarthy, Christopher Darryl
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: TJ211.3 .M43 2010
subject: Robot vision
subject: Computer vision
subject: Image processing

description: A fundamental capability of any navigation system is the perception of potential contact with surfaces in the environment. The efficiency and robustness of natural vision has motivated the development of biologically-inspired approaches to achieve this. Biological studies have highlighted the importance of visual motion (as perceived via optical flow) in the guidance of animal action. However, the use of optical flow in robot navigation systems remains problematic, impeded by measurement noise, environmental assumptions, and real-time constraints. This thesis proposes new biologically-inspired visual cues and algorithms for robust visual control and contact estimation from optical flow. We consider this primarily in the context of robot navigation and control. We present a robust strategy for docking a mobile robot with near-frontal surfaces using optical flow divergence. Results show improved robustness during egomotion, allowing closer than previously reported stopping distances. We present a strategy for performing controlled approaches towards surfaces of arbitrary orientation, providing the first unified control law for landing and docking. Velocity and heading control is achieved using only the maximum flow divergence on the view sphere. We present an insect-inspired structure-from-motion scheme using spherical optical flow from a hemispherical fish-eye sensor, providing the first demonstration of real-time depth map recovery from dense optical flow estimation. In dynamic environments, we investigate the use of optical flow to predict the time and location of impact of incoming objects. We consider this in the context of a stationary camera, as well as for on-road driver hazard perception assistance. We conclude that robustness in flow-based control schemes can be improved if system dynamics are handled in the image domain. This can be achieved by prioritising visual cues conveying a relationship between self-motion and scene structure over explicit structure-from-motion recovery in the control loop. Results suggest a wide-angle spherical projection model is well-suited for visual contact estimation from optical flow.
Workplace Violence against Emergency Medical Services (EMS): a prospective 12-month cohort study evaluating prevalence and risk factors within a large, multistate EMS agency
Creators: name: McGuire, Sarayna S.
name: Bellolio, Fernanda
name: Buck, Bradley J.
name: Liedl, Chad P.
name: Stuhr, Dayne D.
name: Mullan, Aidan F.
name: Buffum, Mykell Ryan
name: Clements, Casey M.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: To determine the prevalence and associated risk factors of workplace violence (WPV) experienced by emergency medical services (EMS) clinicians across a large, multistate ground/air EMS agency. We used a prospective cohort study design from 12/1/2022-11/30/2023. A checkbox was added within the electronic medical record (EMR) asking staff to indicate whether WPV occurred. Patient characteristics, encounter (run), and crew factors were abstracted. Potential risk factors for WPV were assessed using logistic regression, with the occurrence of any form of violence as the primary outcome of interest. Models were both univariable, assessing each risk factor individually, and multivariable assessing all risk factors together to identify independent factors associated with higher risk of WPV. Multivariable model results were reported using odds ratios (aORs) and 95% confidence intervals. A total of 102,632 runs were included, 95.7% (n= 98,234) included checkbox documentation. There were 843 runs (0.86 per 100 runs, 95% CI 0.80-0.92) identified by EMS clinicians as WPV having occurred, including verbal abuse (n= 482), physical assault (n= 142), and both abuse and assault (n= 219). Risk factors for violence included male patient gender (aOR 1.45, 95% CI 1.24 – 1.70, p <0.001), Richmond Agitation-Sedation Scale (RASS) >1 (aOR 16.97, 95% CI 13.71 – 21.01, p < 0.001), and 9-1-1 runs to include emergent (P1; aOR 1.75, 95% CI: 1.17-2.63, p = 0.007) and urgent (P2; aOR 1.64, 95% CI 1.08-2.50, p = 0.021) priority, compared to P3/scheduled transfer or P4/trip requests. Factors associated with lower risk for violence included older patients (aOR per 10 years = 0.95, 95% CI 0.91 - 0.98, p = 0.007) and run time of day between 0601-1200 hours compared to 0000-0600 hours (aOR 0.67, 95% CI 0.51 - 0.88, p = 0.004). Only 2.7% of violent runs captured through the EMR were reported through official processes. Verbal and/or physical violence is recognized in nearly 1% of EMS runs. We recommend prioritizing WPV prevention and mitigation strategies around identified risk factors and simplifying the WPV reporting process in order to reduce staff administrative burden and encourage optimal capturing of violent events.
Origin and Limit of the Recovery of Damaged Information by Time Reversal
Creators: name: Cao, Xiangyu
name: Scaffidi, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Recently it was found that scrambled information can be partially recovered by a time-reversed evolution, even after being damaged by an intruder. We reconsider the origin of the information recovery, and argue that the presence of classical chaos does not preclude it and only leads to a quantitative reduction of the recovery ratio. We also show how decoherence (i.e. entanglement with the intruder) limits the recovery, by proving an upper bound on the recovery ratio in terms of the entangling power of the intruder's action.
description: 5 pages, 4 figures; v2: accepted version; added an appendix
Long Gamma-Ray Burst prompt emission properties as a cosmological tool
Creators: name: Firmani, C.
name: Avila-Reese, V.
name: Ghisellini, G.
name: Ghirlanda, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently, a tight correlation among three quantities that characterize the prompt emission of long Gamma-Ray Bursts (GRBs) with known redshift z, was discovered (Firmani et al. 2006). We use this correlation to construct the Hubble diagram (HD) with a sample of 19 GRBs in the broad range of z=0.17-4.5, and carry out a full statistical analysis to constrain cosmological parameters (CPs). To optimally solve the problem of circularity, a Bayesian approach is applied. The main result is that the concordance LambdaCDM cosmology is fully consistent with the GRB data at the level of several tests. If we assume the Lambda cosmology, then we find Om_M=0.31^{+0.09}_{-0.08} and Om_Lambda=0.80^{+0.20}_{-0.30}$ (1sigma); the flat-geometry case is within 1sigma. Assuming flatness, we find Om_M=0.29^{+0.08}_{-0.06}, and fixing Om_M=0.28, we obtain a dark energy equation of state parameter w=-1.07^{+0.25}_{-0.38}, i.e. the ambdaCDM model (w=-1) is within 1sigma. Given the low number of usable GRBs we cannot yet constrain well the possible evolution of w=w(z). However, the case w(z)=-1 (LambdaCDM) is consistent at the 68.3% CL with GRBs. It is shown also how a broad range of z's in the used sample improves the determination of CPs from the HD, which is the case of GRBs as distance indicators.
description: 14 pages, 10 figures included. To appear in RevMexAA, 43, 203-216 (2007). Our statistical method for fitting cosmological parameters is explained in more detail now. The advantages of high-z datapoints in the Hubble diagram are showed with concrete examples. Added a discussion on caveats of the GRB method for cosmography
Quantifying forest stand diversity using stand structure
Creators: name: Staudhammer, Christina Lynn
Publisher: name: University of British Columbia
Year: 2009

description: Stand structure is an important component of the overall description of biological diversity in a stand. The diversity of tree sizes within a stand affects tree growth and yield, and is highly correlated with the biodiversity of a stand. Four measures of stand diversity based on the stand distribution of basal area by height, diameter, and species were proposed, assuming a baseline of maximum diversity corresponding to a uniform distribution. First, the Extended Shannon Index (ESI), a measure based on Shannon's Index, was derived. Second, a measure based on fitting the univariate and bivariate distributions of diameter and height was investigated. The third measure, STRI, was derived as a modified R-squared, based on the fit of the distribution to that of a uniform distribution. The fourth measure, STVI, was derived based on comparing the variance of a distribution to that of a uniform distribution. The four measures were evaluated with simulated data and inventory data from the Malcolm Knapp Research Forest (MKRF). The ESI and STVI resulted in logical orderings of both the simulated data and the MKRF data. The advantages of the ESI include its known sampling distribution and accepted use in forestry; however, the ESI depends on allocating data to arbitrary classes. The STVI does not require classifying data; however, its sampling distribution is unknown. Since the measures derived require only normally collected inventory plot data, they are relatively inexpensive to use. However, a thorough investigation of the properties of each should be undertaken. Since evaluating structural diversity is becoming an increasingly important part of forest assessment, a quantitative measure is needed to measure diversity. These measures provide a starting point toward finding an inexpensive, practical measure of structural diversity which gives reasonable results.
title: Evaluating Bluebunch Wheatgrass Plant Materials for the Central Great Basin and Range
Creators: name: Delton, McKenna
Publisher: name: Utah State University
Year: 2024

description:
Bluebunch wheatgrass is a perennial grass from North America’s Intermountain West. This area has faced many ecological disturbances, including dryland farming, wildfire, and grazing. These have led to a decline in the populations of native perennial grasses. While bluebunch used to be widespread throughout the region, it often cannot compete with some non-native grasses that are better adapted to these disturbances. Therefore, there is a demand for bluebunch wheatgrass plant materials that have undergone selection for overall better performance in restoration.

Most existing plant materials for bluebunch wheatgrass come from the Columbia Plateau region, but interest is growing in new plant materials originating from the Basin and Range region because they might be better suited to the local environment. Two new materials called BasinSTZ3a and BasinSTZ4 are currently being developed. They have shown equal or better performance compared to existing materials in controlled garden settings, but they have not before been thoroughly tested in a greenhouse or a natural setting.

I conducted studies to compare the performance of five bluebunch wheatgrass populations: two from the Basin & Range (BasinSTZ3a and BasinSTZ4) and three previously released materials (Anatone, Columbia, and P-7). The greenhouse study results indicate that BasinSTZ4 exhibited traits related to a slower growth strategy, while BastinSTZ3a had traits that resembled those of previous releases with higher tiller numbers and a somewhat faster growth strategy. BasinSTZ3a had slightly more vigorous growth and tiller production than BastinSTZ4, and may be suited to warm STZ 3a sites with invasive annuals. The outplanting study, repeated for two years, had limited results in the first year because most seedlings did not survive. In the second year, with more precipitation, early results suggest that BasinSTZ4 performed worse than all other populations at one of the four study sites (whereas there were no differences among populations at the other three sites). This supported my expectation that BasinSTZ3a would perform better due to its history in similar conditions. A better understanding of the performance of these plant materials could help determine where they may be most successful in plantings and guide their future development for the Basin and Range.
Magnetic excitations in a new anisotropic Kagomé antiferromagnet
Creators: name: Robert, Julien
name: Simonet, Virginie
name: Canals, Benjamin
name: Ballou, Rafik
name: Bordet, Pierre
name: Gelard, Isabelle
name: Ibanez, Alain
name: Lejay, Pascal
name: Ollivier, Jacques
name: Stunault, Anne
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Nd-langasite compound contains planes of magnetic Nd3+ ions on a lattice topologically equivalent to a kagomé net. The magnetic susceptibility does not reveal any signature of long-range ordering down to 2 K but rather a correlated paramagnetism with significant antiferromagnetic interactions between the Nd and a single-ion anisotropy due to crystal field effect. Inelastic neutron scattering on Nd-langasite powder and single-crystal allowed to probe its very peculiar low temperature dynamical magnetic correlations. They present unusual dispersive features and are broadly localized in wave-vector Q revealing a structure factor associated to characteristics short range-correlations between the magnetic atoms. From comparison with theoretical calculations, these results are interpreted as a possible experimental observation of a spin liquid state in an anisotropic kagomé antiferromagnet.
description: to appear in Physica B