cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generation of dynamic structures in nonequilibrium reactive bilayers
Creators: name: Reigada, Ramon
name: Buceta, Javier
name: Lindenberg, Katja
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a nonequlibrium approach for the study of a flexible bilayer whose two components induce distinct curvatures. In turn, the two components are interconverted by an externally promoted reaction. Phase separation of the two species in the surface results in the growth of domains characterized by different local composition and curvature modulations. This domain growth is limited by the effective mixing due to the interconversion reaction, leading to a finite characteristic domain size. In addition to these effects, first introduced in our earlier work [Phys. Rev. E {\bf 71}, 051906 (2005)], the important new feature is the assumption that the reactive process actively affects the local curvature of the bilayer. Specifically, we suggest that a force energetically activated by external sources causes a modification of the shape of the membrane at the reaction site. Our results show the appearance of a rich and robust dynamical phenomenology that includes the generation of traveling and/or oscillatory patterns. Linear stability analysis, amplitude equations and numerical simulations of the model kinetic equations confirm the occurrence of these spatiotemporal behaviors in nonequilibrium reactive bilayers.
description: To appear in Phys. Rev. E
Teachers’ use of the MABC checklist to identify children with motor difficulties
Creators: name: Junaid, Kathryn Anne
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to determine whether teachers could use the Movement Assessment Battery for Children Checklist (MABC Checklist) to identify school age children with motor coordination difficulties. The use of this checklist would enable teachers to select the most appropriate children for referral to occupational and physiotherapy services. In this study teachers completed the MABC Checklist on one hundred and three randomly selected school-aged children whose parents consented to their child's participation. A physiotherapist then administered the Movement Assessment Battery for Children Test (MABC Test) to the same children. The relationship between the teachers' scores on the MABC Checklist and the MABC Test was examined using the Pearson product-moment correlation (one-tailed test)(r = 0.51). The degree of concordance in decision-making between teachers and the physiotherapist identifying the same children with and without motor difficulties was determined by calculating the following characteristics of the checklist scores: sensitivity, specificity, positive predictive value and negative predictive value. The sensitivity at both the fifteenth and fifth cut-off points was low so that many children who had motor problems and those "at risk" for motor problems based on the MABC Test, were not detected using the MABC Checklist. Because of the low sensitivity of the MABC Checklist, it would not be of great value as a screening tool. Further revisions of the MABC Checklist as well as more detailed training in its use would be needed before it could be considered as a screening tool to enable teachers to identify children with motor difficulties.
Inelastic neutron scattering determination of the spin Hamiltonian for BaCdVO(PO$_4$)$_2$
Creators: name: Bhartiya, V. K.
name: Hayashida, S.
name: Povarov, K. Yu.
name: Yan, Z.
name: Qiu, Y.
name: Raymond, S.
name: Zheludev, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystal inelastic neutron scattering is used to study spin wave excitations in the fully polarized state of the frustrated quantum ferro-antiferromagnet BaCdVO(PO$_4$)$_2$. The data analysis is based on a Heisenberg spin Hamiltonian that includes as many distinct nearest-neighbor and next-nearest neighbor interactions as allowed by crystal symmetry. All 8 such exchange constants are obtained in a simultaneous fit to over 150 scans across the dispersion manifold. This establishes a definitive quantitative model of this material. It turns out to be substantially different from the one assumed in numerous previous studies based on powder experiments.
description: Minor updates in the main text and improved title
Neuroprotective mechanism of low-dose sodium nitrite in oxygen-glucose deprivation model of cerebral ischemic stroke in PC12 cells
Creators: name: Shakib, Nader
name: Khadem Ansari, Mohammad Hassan
name: Karimi, Pouran
name: Rasmi, Yousef
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Sodium nitrite
subject: Oxygen and glucose deprivation
subject: PC12 cells
subject: Endoplasmic reticulum stress
subject: Ca2+ release
subject: 610

description: The purpose of this study was to clarify the mechanisms of the protective effects of low-dose sodium nitrite (SN) on oxygen and glucose deprivation (OGD)-induced endoplasmic reticulum (ER) stress in PC12 cells. The PC12 cells were exposed to 4 h of OGD and treated with 100 μmol SN. The expression and activity of ER stress markers, including PKR-like endoplasmic reticulum kinase (PERK), transcription factor 6 (ATF6), CCAAT/enhancer binding protein homologous protein (CHOP), as well as caspase-12 and -3, were detected by immunoblotting assay. Fluorescence staining was used to detect the levels of reactive oxygen species (ROS) and Ca2+ release from the ER. Cell viability was also evaluated by MTT assay. It was found that SN significantly inhibited ROS production and Ca2+ release from the ER in OGD-injured PC12 cells. Moreover, ER stress marker expression and cleaved fragments of caspase-3 and -12 in OGD-injured PC12 cells were decreased after SN treatment. These findings were accompanied by a significant increase in cell viability. It seems that SN exerts a neuroprotective effect at least partially through reduction of ROS-mediated ER stress caused by OGD insult.
description: EXCLI Journal;Vol. 18 2019
Diversity-induced resonance
Creators: name: Tessone, Claudio J.
name: Mirasso, Claudio R.
name: Toral, Raul
name: Gunton, James D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present conclusive evidence showing that different sources of diversity, such as those represented by quenched disorder or noise, can induce a resonant collective behavior in an ensemble of coupled bistable or excitable systems. Our analytical and numerical results show that when such systems are subjected to an external subthreshold signal, their response is optimized for an intermediate value of the diversity. These findings show that intrinsic diversity might have a constructive role and suggest that natural systems might profit from their diversity in order to optimize the response to an external stimulus.
description: 4 pages, 3 figures
New type of magneto-rotational instability in cylindrical Taylor-Couette flow
Creators: name: Hollerbach, R.
name: Ruediger, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the stability of cylindrical Taylor-Couette flow in the presence of combined axial and azimuthal magnetic fields, and show that adding an azimuthal field profoundly alters the previous results for purely axial fields. For small magnetic Prandtl numbers Pm, the critical Reynolds number Re_c for the onset of the magneto-rotational instability becomes independent of Pm, whereas for purely axial fields it scales as Pm^{-1}. For typical liquid metals, Re_c is then reduced by several orders of magnitude, enough that this new design should succeed in realizing this instability in the laboratory.
A Google Earth Engine-enabled Python approach to improve identification of anthropogenic palaeo-landscape features
Creators: name: Brandolini, Filippo
name: Ribas, Guillem Domingo
name: Zerboni, Andrea
name: Turner, Sam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The necessity of sustainable development for landscapes has emerged as an important theme in recent decades. Current methods take a holistic approach to landscape heritage and promote an interdisciplinary dialogue to facilitate complementary landscape management strategies. With the socio-economic values of the natural and cultural landscape heritage increasingly recognised worldwide, remote sensing tools are being used more and more to facilitate the recording and management of landscape heritage. Satellite remote sensing technologies have enabled significant improvements in landscape research. The advent of the cloud-based platform of Google Earth Engine has allowed the rapid exploration and processing of satellite imagery such as the Landsat and Copernicus Sentinel datasets. In this paper, the use of Sentinel-2 satellite data in the identification of palaeo-riverscape features has been assessed in the Po Plain, selected because it is characterized by human exploitation since the Mid-Holocene. A multi-temporal approach has been adopted to investigate the potential of satellite imagery to detect buried hydrological and anthropogenic features along with Spectral Index and Spectral Decomposition analysis. This research represents one of the first applications of the GEE Python API in landscape studies. The complete FOSS-cloud protocol proposed here consists of a Python code script developed in Google Colab which could be simply adapted and replicated in different areas of the world
description: 33 pages, 10 figures, 2 tables
Four-point resistance of individual single-wall carbon nanotubes
Creators: name: Gao, B.
name: Chen, Y. F.
name: Fuhrer, M. S.
name: Glattli, D. C.
name: Bachtold, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied the resistance of single-wall carbon nanotubes measured in a four-point configuration with noninvasive voltage electrodes. The voltage drop is detected using multiwalled carbon nanotubes while the current is injected through nanofabricated Au electrodes. The resistance at room temperature is shown to be linear with the length as expected for a classical resistor. This changes at cryogenic temperature; the four-point resistance then depends on the resistance at the Au-tube interfaces and can even become negative due to quantum-interference effects.
description: 4 pages, 4 figures
Perturbations of roots under linear transformations of polynomials
Creators: name: Ćurgus, Branko
name: Mascioni, Vania
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30C15, 26C10

description: Let $\cP_n$ be the complex vector space of all polynomials of degree at most $n$. We give several characterizations of the linear operators $T\in\cL(\cP_n)$ for which there exists a constant $C > 0$ such that for all nonconstant $p\in\cP_n$ there exist a root $u$ of $p$ and a root $v$ of $Tp$ with $|u-v|\leq C$. We prove that such perturbations leave the degree unchanged and, for a suitable pairing of the roots of $p$ and $Tp$, the roots are never displaced by more than a uniform constant independent on $p$. We show that such ``good'' operators $T$ are exactly the invertible elements of the commutative algebra generated by the differentiation operator. We provide upper bounds in terms of $T$ for the relevant constants.
description: 23 pages
Addendum to: On Volumes of Arithmetic Quotients of SO(1,n)
Creators: name: Belolipetsky, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 11E57 (22E40)

description: There are errors in the proof of the uniqueness of arithmetic subgroups of the smallest covolume. In this note we correct the proof, obtain certain results which were stated as a conjecture, and we give several remarks on further developments.
description: 5 pages, addendum to math.NT/0306423, small mistakes in the published version of the addendum are corrected here.
Reweighting non-equilibrium steady-state dynamics along collective variables
Creators: name: Bause, Marius
name: Bereau, Tristan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Computer simulations generate microscopic trajectories of complex systems at a single thermodynamic state point. We recently introduced a Maximum Caliber (MaxCal) approach for dynamical reweighting. Our approach mapped these trajectories to a Markovian description on the configurational coordinates, and reweighted path probabilities as a function of external forces. Trajectory probabilities can be dynamically reweighted both from and to equilibrium or non-equilibrium steady states. As the system's dimensionality increases, an exhaustive description of the microtrajectories becomes prohibitive--even with a Markovian assumption. Instead we reduce the dimensionality of the configurational space to collective variables (CVs). Going from configurational to CV space, we define local entropy productions derived from configurationally averaged mean forces. The entropy production is shown to be a suitable constraint on MaxCal for non-equilibrium steady states expressed as a function of CVs. We test the reweighting procedure on two systems: a particle subject to a two-dimensional potential and a coarse-grained peptide. Our CV-based MaxCal approach expands dynamical reweighting to larger systems, for both static and dynamical properties, and across a large range of driving forces.
description: 12 pages, 7 figures
The critical exponents of the superfluid transition in He4
Creators: name: Campostrini, Massimo
name: Hasenbusch, Martin
name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We improve the theoretical estimates of the critical exponents for the three-dimensional XY universality class, which apply to the superfluid transition in He4 along the lambda-line of its phase diagram. We obtain the estimates alpha=-0.0151(3), nu=0.6717(1), eta=0.0381(2), gamma=1.3178(2), beta=0.3486(1), and delta=4.780(1). Our results are obtained by finite-size scaling analyses of high-statistics Monte Carlo simulations up to lattice size L=128 and resummations of 22nd-order high-temperature expansions of two improved models with suppressed leading scaling corrections. We note that our result for the specific-heat exponent alpha disagrees with the most recent experimental estimate alpha=-0.0127(3) at the superfluid transition of He4 in microgravity environment.
description: 45 pages, 16 figs
The two-angle model and the phase diagram for Chromatin
Creators: name: Diesinger, Philipp M.
name: Heermann, Dieter W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have studied the phase diagram for chromatin within the framework of the two-angle model. Rather than improving existing models with finer details our main focus of the work is getting mathematically rigorous results on the structure, especially on the excluded volume effects and the effects on the energy due to the long-range forces and their screening. Thus we present a phase diagram for the allowed conformations and the Coulomb energies.
Tworuschka, Monika und Udo (Hrsg.), Vorlesebuch
Creators: name: Neuendorff, Irene
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 3 (1994): Ökumenische Rundschau, Band 43, Heft 3
Concluding Remarks/Summary
Creators: name: Pakvasa, Sandip
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: These remarks summarize some of the discussion at the NOW 2004; in addition some topics not touched on at the meeting are reviewed briefly.
description: 10 pages. Concluding Remarks at NOW 2004 Workshop at Conca Specchiulla, Otranto, Italy during september 12-17, 2004. TO be published in the proceedings
On combinatorial link Floer homology
Creators: name: Manolescu, Ciprian
name: Ozsvath, Peter
name: Szabo, Zoltan
name: Thurston, Dylan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 57R58, 57M25

description: Link Floer homology is an invariant for links defined using a suitable version of Lagrangian Floer homology. In an earlier paper, this invariant was given a combinatorial description with mod 2 coefficients. In the present paper, we give a self-contained presentation of the basic properties of link Floer homology, including an elementary proof of its invariance. We also fix signs for the differentials, so that the theory is defined with integer coefficients.
description: Updated to final published version.
Probabilistic learning on manifolds constrained by nonlinear partial differential equations for small datasets
Creators: name: Soize, Christian
name: Ghanem, Roger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A novel extension of the Probabilistic Learning on Manifolds (PLoM) is presented. It makes it possible to synthesize solutions to a wide range of nonlinear stochastic boundary value problems described by partial differential equations (PDEs) for which a stochastic computational model (SCM) is available and depends on a vector-valued random control parameter. The cost of a single numerical evaluation of this SCM is assumed to be such that only a limited number of points can be computed for constructing the training dataset (small data). Each point of the training dataset is made up realizations from a vector-valued stochastic process (the stochastic solution) and the associated random control parameter on which it depends. The presented PLoM constrained by PDE allows for generating a large number of learned realizations of the stochastic process and its corresponding random control parameter. These learned realizations are generated so as to minimize the vector-valued random residual of the PDE in the mean-square sense. Appropriate novel methods are developed to solve this challenging problem. Three applications are presented. The first one is a simple uncertain nonlinear dynamical system with a nonstationary stochastic excitation. The second one concerns the 2D nonlinear unsteady Navier-Stokes equations for incompressible flows in which the Reynolds number is the random control parameter. The last one deals with the nonlinear dynamics of a 3D elastic structure with uncertainties. The results obtained make it possible to validate the PLoM constrained by stochastic PDE but also provide further validation of the PLoM without constraint.
REALIZZAZIONE DI UN APPARATO PER LA RIVELAZIONE DI SPETTRI XAFS IN FLUORESCENZA CON RADIAZIONE DI SINCROTRONE
Creators: name: L. PALLADINO
name: A. REALE
name: A. BALERNA
name: E. BERNIERI
name: H. SANCHEZ
Publisher: name: INFN Open Access Repository
Year: 1991

description: Uno dei principali vantaggi della spettroscopia a raggi X e' la sua applicabilita' indipendentemente dallo stato fisico-chimico delle sostanze in studio: i materiali possono essere cristalli, solidi amorfi o soluzioni. E' noto che lo XAFS (X-ray Absorption Fine Structures) in fluorescenza e' l'unica tecnica che consente lo studio di alcuni tipi di campioni, in situazioni di alta diluizione, con condizioni accettabili di rapporto S/N. In campo biologico, in particolare, dove piccole concentrazioni di metalli giocano un ruolo strutturale fondamentale, questa tecnica e' l'unica capace di fornire informazioni del sito chimico grazie alla sua elevata sensibilita'. L'applicazione di questa tecnica e' leggermente piu' complessa della usuale tecnica di misura dello XAFS in trasmissione. In questo lavoro, dopo una breve presentazione dello XAFS ed una descrizione delle tecniche di rivelazione, sono discussi alcuni problemi specifici della fluorescenza, sono ricavate le condizioni ottimali di operazione in alcuni casi particolari e valutate le situazioni in cui la fluorescenza e' preferibile alla trasmissione. Infine viene descritto l'apparato sperimentale per misure in fluorescenza con radiazione di sincrotrone che e' stato installato sulla linea BX@S della Facility Wiggler di Frascati, il software elaborato per la gestione dell'apparato e la calibrazione di tutto il sistema e vengono discussi alcuni degli spettri raccolti.
Functional renormalisation group for two-body scattering
Creators: name: Birse, Michael C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The functional renormalisation group is applied to the effective action for scattering of two nonrelativistic fermions. The resulting physical effective action is shown to contain the correct threshold singularity. The corresponding "bare" action respects Galilean invariance up to second order in momenta. Beyond that order it contains terms that violate this symmetry and, for the particular regulator considered, nonanalytic third-order terms. The corresponding potential can be expanded around a nontrivial fixed point using the power counting appropriate to a system with large scattering length.
description: 9 pages, RevTeX; some more discussion added and embarrassing misprint corrected
Synchrotron x-ray diffraction studies of the $α\rightleftharpoons β$ structural phase transition in Sn and Sn-Cu
Creators: name: Mazumdar, A.
name: Thamizhavel, A.
name: Nanal, V.
name: Pillay, R. G.
name: Upadhyay, A.
name: Vatsa, V.
name: Reza, A.
name: Shrivastava, A.
name: Chalke, Bhagyashree
name: Mallikarjunachary, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The transformation between the metallic ($β$) and semi-conducting ($α$) allotropes of tin is still not well understood. The phase transition temperature stated in the literature, 286.2 K, seems to be inconsistent with recent calorimetric measurements. In this paper, this intriguing aspect has been explored in Sn and Sn-Cu (alloyed 0.5% Cu by weight) using temperature resolved synchrotron x-ray diffraction measurements performed at the Indus-2 facility. Additionally, the $α\rightleftharpoons β$ Sn transition has been recorded using in-situ heating/cooling experiments in a scanning electron microscope. Based on these measurements, a protocol has been suggested to reduce the formation of $α$-Sn in potentially susceptible systems. This will be useful in experiments like TIN.TIN (The INdia-based TIN detector), which proposes to employ ~100 - 1000 kg of superconducting tin-based detectors to search for neutrinoless double beta decay in the isotope $^{124}$Sn.
description: Accepted for publication in Scripta Materialia
Anthropic prediction for Lambda and the Q catastrophe
Creators: name: Garriga, Jaume
name: Vilenkin, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss probability distributions for the cosmological constant Lambda and the amplitude of primordial density fluctuations Q in models where they both are anthropic variables. With mild assumptions about the prior probabilities, the distribution P(Lambda,Q) factorizes into two independent distributions for the variables Q and $y \propto Λ/Q^3$. The distribution for y is largely model-independent and is in a good agreement with the observed value of y. The form of P(Q) depends on the origin of density perturbations. If the perturbations are due to quantum fluctuations of the inflaton, then P(Q) tends to have an exponential dependence on Q, due to the fact that in such models Q is correlated with the amount of inflationary expansion. For simple models with a power-law potential, P(Q) is peaked at very small values of Q, far smaller than the observed value of 10^{-5}. This problem does not arise in curvaton-type models, where the inflationary expansion factor is not correlated with Q.
description: 20 pages, 1 figure
Low-energy in-gap states of vortices in superconductor-semiconductor heterostructures
Creators: name: Ziesen, Alexander
name: Hassler, Fabian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recent interest in the low-energy states in vortices of semiconductor-superconductor heterostructures are mainly fueled by the prospects of using Majorana zero modes for quantum computation. The knowledge of low-lying states in the vortex core is essential as they pose a limitation on the topological computation with these states. Recently, the low-energy spectra of clean heterostructures, for superconducting-pairing profiles that vary slowly on the scale of the Fermi wavelength of the semiconductor, have been analytically calculated. In this work, we formulate an alternative method based on perturbation theory to obtain concise analytical formulas to predict the low-energy states including explicit magnetic-field and gap profiles. We provide results for both a topological insulator (with a linear spectrum) as well as for a conventional electron gas (with a quadratic spectrum). We discuss the spectra for a wide range of parameters, including both the size of the vortex and the chemical potential of the semiconductor, and thereby provide a tool to guide future experimental efforts. We compare these findings to numerical results.
description: 10 pages, 9 figures
A relativistic Glauber approach to polarization transfer in 4He(\vec{e},e'\vec{p})
Creators: name: Lava, P.
name: Ryckebusch, J.
name: Van Overmeire, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Polarization-transfer components for 4He(\vec{e},e'\vec{p})3H are computed within the relativistic multiple-scattering Glauber approximation (RMSGA). The RMSGA framework adopts relativistic single-particle wave functions and electron-nucleon couplings. The predictions with free and various parametrizations for the medium-modified electromagnetic form factors are compared to the world data.
description: 2 pages, 1 figure Proceedings of the Int. School on Nuclear Physics, 26th Course, Erice (Sicily), September 16th- 24th, 2004; To appear in Progress in Particle and Nuclear Physics
Feminist bodies, affect and the radicalisation of democracy: An investigation into feminist mobilisations in Spain
Creators: name: Queralt Santamatilde, Irene
Publisher: name: University of Westminster
Year: 2024

description: This thesis aims to rethink the radicalisation of democracy through an affective lens by shedding light to the way in which feminist mobilisations might contribute to the radicalisation of democracy. Understanding the latter as the process of deepening and disrupting democracy, the research engages with literature that theorises the relationship between feminist mobilisations and democracy, to argue that the affective dimension in the articulation of feminist mobilisations is under-explored when it comes to understanding the radicalisation of democracy. Therefore, the thesis aims to move beyond the literature that builds on the horizon of women as a foundational category of feminism, and the linguistic focus of agonistic demands, to further understand the role of affect and emotions in articulating feminist bodies that allow for concerted political action. The research takes as a main case for study recent feminist mobilisations in Spain, and follows affect and emotions through a series of interviews and an analysis of theatre performances. Ultimately, the thesis contributes to the literature on radical democracy and feminist mobilisations arguing for the importance of the role of affect and affective readings in holding feminist bodies together that destabilise affective understandings of the world.
Specular-reflection photonic hook generation under oblique illumination of a super-contrast dielectric microparticle
Creators: name: Geints, Yu. E.
name: Zemlyanov, A. A.
name: Minin, I. V.
name: Minin, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: J.2
subject: 65Z05

description: The possibility of overcoming the critical condition for localized photonic nanojet upon plane optical wave diffraction at mesoscale dielectric particle, which is commonly known as "the refractive index contrast is less than two", was recently reported in our works. To this end, the novel geometrical scheme of photonic nanojet generation in "reflection mode" was proposed based on a super-contrast microparticle (n~2) placed near a flat mirror. In this paper, through the numerical FDTD calculations of optical near-field structure of 2D and 3D dielectric microparticles (cylinder, sphere) we extend our considerations to the case of oblique particle-at-mirror illumination and present new physical phenomena arising in the considered photonic geometry. Those are the generation of a quasi-retrograde photonic nanojet following the inclined particle illumination and the formation of a curvilinear spatial region of optical field localization in the form of a "specular reflection photonic hook" (s-Hook). Two different regimes of s-Hook formation are analyzed by changing the direction of light incidence and by flat mirror rotation.
description: 10 pages, 4 figures
Two-component galaxy models with a central BH -- II. The ellipsoidal case
Creators: name: Ciotti, L.
name: Mancino, A.
name: Pellegrini, S.
name: Lorzad, A. Ziaee
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recently, two-component spherical galaxy models have been presented, where the stellar profile is described by a Jaffe law, and the total density by another Jaffe law, or by an $r^{-3}$ law at large radii. We extend these two families to their ellipsoidal axisymmetric counterparts: the JJe and J3e models. The total and stellar density distributions can have different flattenings and scale lengths, and the dark matter halo is defined by difference. First, the analytical conditions required to have a nowhere negative dark matter halo density are derived. The Jeans equations for the stellar component are then solved analytically, in the limit of small flattenings, also in presence of a central BH. The azimuthal velocity dispersion anisotropy is described by the Satoh $k$-decomposition. Finally, we present the analytical formulae for velocity fields near the center and at large radii, together with the various terms entering the Virial Theorem. The JJe and J3e models can be useful in a number of theoretical applications, e.g. to explore the role of the various parameters (flattening, relative scale lengths, mass ratios, rotational support) in determining the behavior of the stellar kinematical fields before performing more time-expensive integrations with specific galaxy models, to test codes of stellar dynamics, and in numerical simulations of gas flows in galaxies.
description: 21 pages, 10 figures. MNRAS accepted
The fourth moment of Dirichlet L-functions
Creators: name: Young, Matthew P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06

description: We compute the fourth moment of Dirichlet L-functions at the central point for prime moduli, with a power savings in the error term.
description: 40 pages. v2: Improved exposition, simplified proofs, and minor errors fixed. To appear in Annals of Mathematics.
The Frequency Dependence of Critical-velocity Behavior in Oscillatory Flow of Superfluid Helium-4 Through a 2-micrometer by 2-micrometer Aperture in a Thin Foil
Creators: name: Flaten, J. A.
name: Lindensmith, C. A.
name: Zimmermann, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The critical-velocity behavior of oscillatory superfluid Helium-4 flow through a 2-micrometer by 2-micrometer aperture in a 0.1-micrometer-thick foil has been studied from 0.36 K to 2.10 K at frequencies from less than 50 Hz up to above 1880 Hz. The pressure remained less than 0.5 bar. In early runs during which the frequency remained below 400 Hz, the critical velocity was a nearly-linearly decreasing function of increasing temperature throughout the region of temperature studied. In runs at the lowest frequencies, isolated 2 Pi phase slips could be observed at the onset of dissipation. In runs with frequencies higher than 400 Hz, downward curvature was observed in the decrease of critical velocity with increasing temperature. In addition, above 500 Hz an alteration in supercritical behavior was seen at the lower temperatures, involving the appearance of large energy-loss events. These irregular events typically lasted a few tens of half-cycles of oscillation and could involve hundreds of times more energy loss than would have occurred in a single complete 2 Pi phase slip at maximum flow. The temperatures at which this altered behavior was observed rose with frequency, from ~ 0.6 K and below, at 500 Hz, to ~ 1.0 K and below, at 1880 Hz.
description: 35 pages, 13 figures, prequel to cond-mat/0502039
A partnership in communication: a qualitative study on the experiences of Punjabi clients as users of interpreters
Creators: name: Kainth, Amritpal Polly
Publisher: name: University of British Columbia
Year: 2009

description: Health care practitioners are constantly challenged when providing services to culturally diverse communities. Communication barriers such as differences in culture and language, lack of education about health care services, cultural insensitivity on the part of the practitioner and system ineffectiveness prevent access to health care services by Punjabis and visible ethnic communities as a whole. In this practicum thesis, I present my personal and professional insights, research and client perspectives on how interpreters can help culturally diverse communities to access health care services. I discuss my qualitative study where participant observations and semi-structured interviews were conducted with Punjabi clients to explore their experiences of using interpreters. The focus is specifically on Punjabi clients. Since South Asians (which includes Punjabis) are the fifth largest single ethnic community in Canada and the third largest in British Columbia, it is important to understand their experiences. The findings suggest that many Punjabi clients are satisfied with their use of an interpreter. They appreciate having an interpreter take the time to explain different cultural beliefs and difficult concepts, translating from one language to another, and catching missed material This study has implications for health care practitioners in working with interpreters to develop a health care service delivery system that is accountable to all culturally diverse communities.
ERICC Policy Brief _ Lebanon’s Education Crisis: Pre-existing Challenges Before the Escalation of Israeli Aggressions
Creators: name: ERICC Consortium
name: Hammoud, Mohammad
name: Brun, Cathrine
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy

description: This policy brief provides an overview of the educational sector in Lebanon immediately prior to the escalation of Israel’s aggression in the autumn of 2024. Establishing a baseline for the conditions in the sector is essential for assessing the expected significant impacts on education in Lebanon. By evaluating the educational landscape just before the escalation of Israel’s aggression, this brief will help in formulating strategic and targeted interventions in educational policy and practice for both the immediate crisis and its protracted impacts while also considering the pre-existing challenges in Lebanon’s education sector.The policy brief outlines necessary actions for educational recovery and strategies to prevent further school disruptions in light of recent events. The challenges outlined are primarily based on insights from two online surveys conducted by the Centre for Lebanese Studies between June and August 2024. The first survey targeted 406 grade 12 students, with 48% attending private schools and 52% attending public schools, spanning all eight Lebanese governorates. The second survey targeted 2,075 parents from across all eight Lebanese governorates, encompassing a diverse range of educational levels: 9% with children in preschool, 47% in primary school, 28% in middle school, and 16% in high school. Together the findings from both surveys offer a comprehensive view of the issues from both student and parental perspectives. They reveal the extensive impact on education of prolonged disruptions and financial hardships, compounded by ongoing Israeli aggression, all of which are threatening the future of education in Lebanon and are expected to increase significantly.
Neoadjuvant PD-1 inhibition in recurrent glioblastoma: a systematic review and meta-analysis
Creators: name: Burton, Matthew
name: Simond, Gregory
name: Heneghan, Carl
name: Shakir, Rebecca
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Medical Specialties
subject: Oncology
subject: Surgery

description: A systematic review and meta-analysis on the use of neoadjuvant PD-1 inhibition in recurrent glioblastoma.
Detecting metal-rich intermediate-age Globular Clusters in NGC 4570 using K-band photometry
Creators: name: Kotulla, R.
name: Fritze, U.
name: Anders, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Globular Cluster Systems (GCSs) of most early-type galaxies feature two peaks in their optical colour distributions. Blue-peak GCs are believed to be old and metal-poor, whereas the ages, metallicities, and the origin of the red-peak GCs are still being debated. We obtained deep K-band photometry and combined it with HST observations in g and z to yield a full SED from optical to near-infrared. This now allows us to break the age-metallicity degeneracy. We used our evolutionary synthesis models GALEV for star clusters to compute a large grid of models with different metallicities and a wide range of ages. Comparing these models to our observations revealed a large population of intermediate-age (1-3 Gyr) and metalrich (~ solar metallicity) globular clusters, that will give us further insights into the formation history of this galaxy.
description: 5 pages, 2 figures, to appear in Young Massive Star Clusters, eds. E. Perez, R. de Grijs, R. Gonzalez Delgado
Magnetic Field Orientation in Self-Gravitating Turbulent Molecular Clouds
Creators: name: Barreto-Mota, Lucas
name: Pino, Elisabete M. de Gouveia Dal
name: Burkhart, Blakesley
name: Melioli, Claudio
name: Santos-Lima, Reinaldo
name: Kadowaki, Luís H. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars form inside molecular cloud filaments from the competition of gravitational forces with turbulence and magnetic fields. The exact orientation of these filaments with the magnetic fields depends on the strength of these fields, the gravitational potential, and the line-of-sight (LOS) relative to the mean field. To disentangle these effects we employ three-dimensional magnetohydrodynamical numerical simulations that explore a wide range of initial turbulent and magnetic states, i.e., sub-Alfvénic to super-Alfvénic turbulence, with and without gravity. We use histogram of relative orientation (HRO) and the associated projected Rayleigh statistics (PRS) to study the orientation of density and, in order to compare with observations, the integrated density relative to the magnetic field. We find that in sub-Alfvénic systems the initial coherence of the magnetic is maintained inside the cloud and filaments form perpendicular to the field. This trend is not observed in super-Alfvénic models, where the lines are dragged by gravity and turbulence and filaments are mainly aligned to the field. The PRS analysis of integrated maps shows that LOS effects are important only for sub-Alfvénic clouds. When the LOS is perpendicular to the initial field orientation most of the filaments are perpendicular to the projected magnetic field. The inclusion of gravity increases the number of dense structures perpendicular to the magnetic field, reflected as lower values of the PRS for denser regions, regardless of whether the model is sub- or super-Alfvénic. The comparison of our results with observed molecular clouds reveal that most are compatible with sub-Alfvénic models.
description: Paper accepted for publication in MNRAS
Hilpert, Konrad / Ohlig, Karl-Heinz (Hrsg.), Der eine Gott in vielen Kulturen
Creators: name: Vo
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 3 (1994): Ökumenische Rundschau, Band 43, Heft 3
Measurements of Silurian brachiopod specimens from the Pentland Hills, Scotland
Creators: name: Harper, David
name: Gallagher, Emma
Publisher: name: Zenodo
Year: 2024
Subjects: Brachiopods
Silurian
Scotland
palaeoecology
palaeobiogeography

description: The abundant and diverse brachiopod fauna from the Silurian (upper Llandovery-lower Wenlock) rocks of the Pentland Hills is described within its geographical stratigraphical context. The majority of species are described in detail, discussed and illustrated. A total of 53 species attributable to the following superfamilies are present (numbers of species, including those in open nomenclature, in parentheses):  Linguloidea (7), Craniopsoidea (1), Discinoidea (4), Strophomenoidea (9), Plectambonitoidea (2), Chonetoidea (1), Childiopsoidea (2), Skenidioidea (1), Dalmanelloidea (3), Pentameroidea (2), Rhynchonelloidea (4), Atrypoidea (4), Athyridoidea (5), Cyrtioidea (5) and Delthyridoidea (3). Five new species,  Leptaena eska, Isorthis (Ovalella) clarksoni, Dicoelosia paratenua, Oglupes scotia and Lissatrypa scotica, are erected. Nevertheless in terms of abundance the fauna is dominated by individuals belonging to the Strophomenoidea, Plectambonitoidea and Dalmanelloidea. The composition of the fauna, its deeper-water setting associated with finer-grained siliciclastic substrates characterizes this Pentlandian biota.
description: Funding provided by: Leverhulme TrustCrossref Funder Registry ID: https://ror.org/012mzw131Award Number: EM-2021-010
description: These are measurements made on fossil brachiopod internal and external moulds.
The Dynamics of Radiative Shock Waves: Linear and Nonlinear Evolution
Creators: name: Mignone, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The stability properties of one-dimensional radiative shocks with a power-law cooling function of the form $Λ\propto ρ^2T^α$ are the main subject of this work. The linear analysis originally presented by Chevalier & Imamura, is thoroughfully reviewed for several values of the cooling index $α$ and higher overtone modes. Consistently with previous results, it is shown that the spectrum of the linear operator consists in a series of modes with increasing oscillation frequency. For each mode a critical value of the cooling index, $α_\textrm{c}$, can be defined so that modes with $α< α_\textrm{c}$ are unstable, while modes with $α> α_\textrm{c}$ are stable. The perturbative analysis is complemented by several numerical simulations to follow the time-dependent evolution of the system for different values of $α$. Particular attention is given to the comparison between numerical and analytical results (during the early phases of the evolution) and to the role played by different boundary conditions. It is shown that an appropriate treatment of the lower boundary yields results that closely follow the predicted linear behavior. During the nonlinear regime, the shock oscillations saturate at a finite amplitude and tend to a quasi-periodic cycle. The modes of oscillations during this phase do not necessarily coincide with those predicted by linear theory, but may be accounted for by mode-mode coupling.
description: 33 pages, 12 figures, accepted for publication on the Astrophysical Journal
Felmy, K.Chr / Kretschmar, G. / u.a., Kirchen im Kontext unterschiedlicher Kulturen
Creators: name: Schütz, Georg
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 3 (1994): Ökumenische Rundschau, Band 43, Heft 3
Ito maps and analysis on path spaces
Creators: name: Elworthy, K. D.
name: Li, Xue-Mei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider versions of Malliavin calculus on path spaces of compact manifolds with diffusion measures, defining Gross-Sobolev spaces of differentiable functions and proving their intertwining with solution maps, I, of certain stochastic differential equations. This is shown to shed light on fundamental uniqueness questions for this calculus including uniqueness of the closed derivative operator $d$ and Markov uniqueness of the associated Dirichlet form. A continuity result for the divergence operator by Kree and Kree is extended to this situation. The regularity of conditional expectations of smooth functionals of classical Wiener space, given I, is considered and shown to have strong implications for these questions. A major role is played by the (possibly sub-Riemannian) connections induced by stochastic differential equations: Damped Markovian connections are used for the covariant derivatives.