cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Properties of Jovian Trojan Asteroids Listed in SDSS Moving Object Catalog 3
Creators: name: Szabo, Gy. M.
name: Ivezic, Z.
name: Juric, M.
name: Lupton, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze 1187 observations of about 860 unique candidate Jovian Trojan asteroids listed in the 3rd release of Sloan Digital Sky Survey (SDSS) Moving Object Catalog. The sample is complete at the faint end to r=21.2 mag (apparent brightness) and H=13.8 (absolute brightness, approximately corresponding to 10 km diameter). A subset of 297 detections of previously known Trojans were used to design and optimize a selection method based on observed angular velocity that resulted in the remaining objects. Using a sample of objects with known orbits, we estimate that the candidate sample contamination is about 3%. The well-controlled selection effects, the sample size, depth and accurate five-band UV-IR photometry enabled several new findings and the placement of older results on a firmer statistical footing. We find that there are significantly more asteroids in the leading swarm (L4) than in the trailing swarm (L5): N(L4)/N(L5)=1.6$\pm$0.1, independently of limiting object's size. The overall counts normalization suggests that there are about as many Jovians Trojans as there are main-belt asteroids down to the same size limit, in agreement with earlier estimates. We find that Trojan asteroids have a remarkably narrow color distribution (root-mean-scatter of only $\sim$0.05 mag) that is significantly different from the color distribution of the main-belt asteroids. The color of Trojan asteroids is correlated with their orbital inclination, in a similar way for both swarms, but appears uncorrelated with the object's size. We extrapolate the results presented here and estimate that Large Synoptic Survey Telescope will determine orbits, accurate colors and measure light curves in six photometric bandpasses for about 100,000 Jovian Trojan asteroids.
description: 17 pages, 19 figures (49 figure panels), 1 table, accepted by MNRAS
Beyond the Bowen-York extrinsic curvature for spinning black holes
Creators: name: Hannam, Mark
name: Husa, Sascha
name: Bruegmann, Bernd
name: Gonzalez, Jose A.
name: Sperhake, Ulrich
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is well-known that Bowen-York initial data contain spurious radiation. Although this ``junk'' radiation has been seen to be small for non-spinning black-hole binaries in circular orbit, its magnitude increases when the black holes are given spin. It is possible to reduce the spurious radiation by applying the puncture approach to multiple Kerr black holes, as we demonstrate for examples of head-on collisions of equal-mass black-hole binaries.
description: 10 pages, 2 figures, submitted to special "New Frontiers in Numerical Relativity" issue of Classical and Quantum Gravity
title: Museen in Würzburg. Bildungsangebote für weiterführende Schulen. Eine Handreichung mit Lehrplanbezügen
Creators: name: Maidt, Petra
name: Guido, Fackler
name: Stefanie, Menke
Publisher: name: Universität Würzburg
Year: 2015
Subjects: subject: 370 Bildung und Erziehung

description: Schriften und Materialien der Würzburger Museologie; 1(2)
A 'User-Friendly' Approach to the Dynamical Equations of Non-Holonomic Systems
Creators: name: Benenti, Sergio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Two effective methods for writing the dynamical equations for non-holonomic systems are illustrated. They are based on the two types of representation of the constraints: by parametric equations or by implicit equations. They can be applied to linear as well as to non-linear constraints. Only the basic notions of vector calculus on Euclidean 3-space and on tangent bundles are needed. Elementary examples are illustrated.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
On the roughness of single- and bi-layer graphene membranes
Creators: name: Meyer, J. C.
name: Geim, A. K.
name: Katsnelson, M. I.
name: Novoselov, K. S.
name: Obergfell, D.
name: Roth, S.
name: Girit, C.
name: Zettl, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a detailed transmission electron microscopy and electron diffraction study of the thinnest possible membrane, a single layer of carbon atoms suspended in vacuum and attached only at its edges. Membranes consisting of two graphene layers are also reported. We find that the membranes exhibit an apparently random spontaneous curvature that is strongest in single-layer membranes. A direct visualization of the roughness is presented for two-layer membranes where we used the variation of diffracted intensities with the local orientation of the membrane.
description: 14 pages, 8 figures
Covariance and Time Regained in Canonical General Relativity
Creators: name: Kouletsis, Ioannis
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Canonical vacuum gravity is expressed in generally-covariant form in order that spacetime diffeomorphisms be represented within its equal-time phase space. In accordance with the principle of general covariance, the time mapping ${\T}: {\yman} \to {\rman}$ and the space mapping ${\X}: {\yman} \to {\xman}$ that define the Dirac-ADM foliation are incorporated into the framework of the Hilbert variational principle. The resulting canonical action encompasses all individual Dirac-ADM actions, corresponding to different choices of foliating vacuum spacetimes by spacelike hypersurfaces. In this framework, spacetime observables, namely, dynamical variables that are invariant under spacetime diffeomorphisms, are not necessarily invariant under the deformations of the mappings $\T$ and $\X$, nor are they constants of the motion. Dirac observables form only a subset of spacetime observables that are invariant under the transformations of $\T$ and $\X$ and do not evolve in time. The conventional interpretation of the canonical theory, due to Bergmann and Dirac, can be recovered only by postulating that the transformations of the reference system $({\T},{\X})$ have no measurable consequences. If this postulate is not deemed necessary, covariant canonical gravity admits no classical problem of time.
description: 41 pages, no figures
Gesucht: Die Pfarrei der Zukunft. Der kreative Prozess im Bistum Essen hg. v. Markus Etscheid-Stams / Björn Szymanowski / Andrea Qualbrink / Benedikt Jürgens
Creators: name: Pock, Johann
Publisher: name: Theologische Revue
Year: 2022

description: Theologische Revue, Bd. 118 (2022): Februar
Non-Perturbative Flat Direction Decay
Creators: name: Basboll, Anders
name: Maybury, David
name: Riva, Francesco
name: West, Stephen M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that supersymmetric flat direction vacuum expectation values can decay non-perturbatively via preheating. Considering a toy U(1) gauge theory, we explicitly calculate the scalar potential, in the unitary gauge, for excitations around several flat directions. We show that the mass matrix for the excitations has non-diagonal entries which vary with the phase of the flat direction vacuum expectation value. Furthermore, this mass matrix has zero eigenvalues whose eigenstates change with time. We show that these light degrees of freedom are produced copiously in the non-perturbative decay of the flat direction vacuum expectation value.
description: 7 pages, 2 figures. References added, version for Phys. Rev. D
Surface-wave interferometry on single subwavelength slit-groove structures fabricated on gold films
Creators: name: Kalkum, F.
name: Gay, G.
name: Alloschery, O.
name: Weiner, J.
name: Lezec, H. J.
name: Xie, Y.
name: Mansuripur, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We apply the technique of far-field interferometry to measure the properties of surface waves generated by two-dimensional (2D) single subwavelength slit-groove structures on gold films. The effective surface index of refraction measured for the surface wave propagating over a distance of more than 12 microns is determined to be 1.016 with a measurement uncertainty of 0.004, to within experimental uncertainty of the expected bound surface plasmon-polariton (SPP) value for a Au/Air interface of 1.018. We compare these measurements to finite-difference-time-domain (FDTD) numerical simulations of the optical field transmission through these devices. We find excellent agreement between the measurements and the simulations for the surface index of refraction. The measurements also show that the surface wave propagation parameter exhibits transient behavior close to the slit, evolving smoothly from greater values asymptotically toward the value expected for the SPP over the first 2-3 microns of slit-groove distance. This behavior is confirmed by the FDTD simulations.
Apsidal Behavior Among Planetary Orbits: Testing the Planet-Planet Scattering Model
Creators: name: Barnes, Rory
name: Greenberg, Richard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Planets in extrasolar systems tend to interact such that their orbits lie near a boundary between apsidal libration and circulation, a "separatrix", with one eccentricity periodically reaching near-zero. One explanation, applied to the Upsilon Andromedae system, assumed three original planets on circular orbits. One is ejected, leaving the other two with near-separatrix behavior. We test that model by integrating hundreds of hypothetical, unstable planetary systems that eject a planet. We find that the probability that the remaining planets exhibit near-separatrix motion is small (< 5% compared with nearly 50% of observed systems). Moreover, while observed librating systems are evenly divided between aligned and anti-aligned pericenter longitudes, the scattering model strongly favors alignment. Alternative scattering theories are proposed, which may provide a more satisfactory fit with observed systems.
description: 10 pages, 2 figures, accepted to ApJ Letters
Excitable Scale Free Networks
Creators: name: Copelli, Mauro
name: Campos, Paulo R. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: When a simple excitable system is continuously stimulated by a Poissonian external source, the response function (mean activity versus stimulus rate) generally shows a linear saturating shape. This is experimentally verified in some classes of sensory neurons, which accordingly present a small dynamic range (defined as the interval of stimulus intensity which can be appropriately coded by the mean activity of the excitable element), usually about one or two decades only. The brain, on the other hand, can handle a significantly broader range of stimulus intensity, and a collective phenomenon involving the interaction among excitable neurons has been suggested to account for the enhancement of the dynamic range. Since the role of the pattern of such interactions is still unclear, here we investigate the performance of a scale-free (SF) network topology in this dynamic range problem. Specifically, we study the transfer function of disordered SF networks of excitable Greenberg-Hastings cellular automata. We observe that the dynamic range is maximum when the coupling among the elements is critical, corroborating a general reasoning recently proposed. Although the maximum dynamic range yielded by general SF networks is slightly worse than that of random networks, for special SF networks which lack loops the enhancement of the dynamic range can be dramatic, reaching nearly five decades. In order to understand the role of loops on the transfer function we propose a simple model in which the density of loops in the network can be gradually increased, and show that this is accompanied by a gradual decrease of dynamic range.
description: 6 pages, 4 figures
Dewetting of an ultrathin solid film on a lattice-matched or amorphous substrate
Creators: name: Khenner, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An evolution partial differential equation for the surface of a non-wetting single-crystal film in an attractive substrate potential is derived and used to study the dynamics of a pinhole for the varying initial depth of a pinhole and the strengths of the potential and the surface energy anisotropy. The results of the simulations demonstrate how the corresponding parameters may lead to complete or partial dewetting of the film. Anisotropy of the surface energy, through faceting of the pinhole walls, is found to most drastically affect the time to film rupture. In particular, the similations support the conjecture that the strong anisotropy is capable of the complete suppression of dewetting even when the attractive substrate potential is strong.
description: Submitted to PRB
The formation and gas content of high redshift galaxies and minihalos
Creators: name: Naoz, Smadar
name: Barkana, Rennan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the suppression of the baryon density fluctuations compared to the dark matter in the linear regime. Previous calculations predict that the suppression occurs up to a characteristic mass scale of ~ 1,000,000 solar masses, which suggests that pressure has a central role in determining the properties of the first luminous objects at early times. We show that the expected characteristic mass scale is in fact substantially lower (by a factor of ~ 3-10, depending on redshift), and thus the effect of baryonic pressure on the formation of galaxies up to reionization is only moderate. This result is due to the influence on perturbation growth of the high pressure that prevailed in the period from cosmic recombination to z ~ 200, when the gas began to cool adiabatically and the pressure then dropped. At z ~ 10 the suppression of the baryon fluctuations is still sensitive to the history of pressure in this high-redshift era. We calculate the fraction of the cosmic gas that is in minihalos and find that it is substantially higher than would be expected with the previously-estimated characteristic mass. Expanding our investigation to the non-linear regime, we calculate in detail the spherical collapse of high-redshift objects in a Lambda-CDM universe. We include the gravitational contributions of the baryons and radiation and the memory of their kinematic coupling before recombination. We use our results to predict a more accurate halo mass function as a function of redshift.
description: 11 pages, 9 figures, submitted to MNRAS
An experimental 2.7 meter liquid mirror telescope
Creators: name: Gibson, Bradley Kenneth
Publisher: name: University of British Columbia
Year: 2010

description: A 2.7-meter Liquid Mirror Telescope (LMT) is currently under construction at the University of British Columbia. The stationary, parabolic primary mirror is formed by uniformly rotating the highly reflective liquid, metallic mercury. Compensation for the lack of mechanical tracking will be accomplished by using the Time Delay and Integrate (TDI) readout technique with our Ford 2048 x 2048 CCD detector. The ability to produce large, diffraction-limited mirrors in the laboratory has been previously demonstrated; this project, the first of its kind, is an investigation into their potential for astronomical survey-work, in a working observatory environment. A set of 40 intermediate-band filters, one filter to be used per "photometric" night, will facilitate the collection of Spectral Energy Distributions (SEDs) of all objects, to a limiting stellar V[symbol omitted] ~21, in the 83.0 deg² strip (1/3 deg wide) available to this telescope. A catalog of >10⁵ galaxy and ~3,000 quasar SEDs is expected, providing the largest database of its type to date. A detailed stress-tensor analysis of the mercury-loaded mirror cell is given. The maximum flexure of the cell (at the mirror rim) was found to be ≲0.32 mm. The high resonant frequency of the cell was designed to minimise the excitement of both gravity and capillary waves, surface phenomena which can degrade image quality. An analysis of the support structure indicated that its maximum deflection under wind loading (≲0.3µm) would be significantly less than the Ford CCD's physical pixel size of 15 µm. Temperature-sensitive autofocussing was needed to ensure that thermal expansion/ contraction of the support structure did not lead to defocussing. Star-trail curvature at non-zero latitudes and the discrete nature of the TDI readout mode leads to elongation of north-south (NS) and east-west (EW) image structure, respectively. Convolving stellar Point Spread Functions (e.g. Gaussian) with the CCD's pixel width showed image broadening of ~5% (EW) and ~9% (NS). While these effects are expected to be negligible for our instrument, quantifying them under on-site testing will be imperative before proceeding with the development of larger LMTs.
An Explicit Formula for Symmetric Polynomials Related to the Eigenfunctions of Calogero-Sutherland Models
Creators: name: Hallnäs, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We review a recent construction of an explicit analytic series representation for symmetric polynomials which up to a groundstate factor are eigenfunctions of Calogero-Sutherland type models. We also indicate a generalisation of this result to polynomials which give the eigenfunctions of so-called 'deformed' Calogero-Sutherland type models.
description: This is a contribution to the Proc. of workshop on Geometric Aspects of Integrable Systems (July 17-19, 2006; Coimbra, Portugal), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Tunneling exponents sensitive to impurity scattering in quantum wires
Creators: name: Kindermann, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that the scaling exponent for tunneling into a quantum wire in the "Coulomb Tonks gas" regime of impenetrable, but otherwise free, electrons is affected by impurity scattering in the wire. The exponent for tunneling into such a wire thus depends on the conductance through the wire. This striking effect originates from a many-body scattering resonance reminiscent of the Kondo effect. The predicted anomalous scaling is stable against weak perturbations of the ideal Tonks gas limit at sufficiently high energies, similar to the phenomenology of a quantum critical point.
description: 5 pages, 2 figures; slightly extended version of the published article
title: Εκτίμηση επαγγελματικού κινδύνου κατά την εκτέλεση εργασιών στα δεξαμενόπλοια
title: Analysis of occupational hazards  and risks during working on an oil tanker
Creators: name: Πελεκη Φωτεινη
Publisher: name: Technical University of Crete
Year: 2021

description: Σκοπός της παρούσας διπλωματικής  είναι η ανάλυση  επικινδυνότητας κατά  την εκτέλεση των εργασιών καθ’ όλο τον χρόνο που το πλοίο βρίσκεται εν πλω καθώς και όταν βρίσκεται σε λιμάνι φορτοεκφόρτωσης. Τα δεδομένα θα συλλεχθούν με στατιστικά ατυχημάτων, κανονισμούς ασφαλείας καθώς και με συνεντεύξεις από ειδικούς (SQE Department).
Για την ανάλυση του κινδύνου θα χρησιμοποιηθεί η μέθοδος bow-tie. Η μέθοδος Bow-tie είναι μια μέθοδος αξιολόγησης κινδύνου που μπορεί να χρησιμοποιηθεί για να αναλύσει και να αποδείξει αιτιώδεις σχέσεις σε σενάρια υψηλού κινδύνου. Επιπλέον  συμβάλει στην κατανόηση από το προσωπικό   της διαχείρισης κινδύνου  καθώς  και το ρόλο του σε αυτό. Τέλος σε κάθε εργασία μετά την αξιολόγηση κινδύνου θα ακολουθούν  τα μέτρα πρόληψης.
title: Panorama sobre la enseñanza de odontogeriatría en Cuba
title: An Overview of Geriatric Dentistry Education in Cuba
titleType: AlternativeTitle
Creators: name: Martínez Asanza, Dachel
name: Rojas Herrera, Isis Anastasia
Publisher: name: Zenodo
Year: 2025

description: Estimado Editor: Nos dirigimos a usted para resaltar la importancia de fortalecer la enseñanza de la Odontogeriatría en Cuba, dada la creciente población de adultos mayores y su necesidad de atención estomatológica especializada. Con el 21,6 % de la población cubana mayor de 60 años, es crucial optimizar la formación y capacitación de profesionales en este campo. Aunque la Odontogeriatría se considera una materia posgraduada en Cuba, se han logrado avances significativos, como la maestría en Odontogeriatría, recientemente acreditada de manera excelente. Reforzar la formación de los estomatólogos garantizará que puedan atender de manera efectiva las necesidades de salud específicas de los adultos mayores cubanos. Confiamos en que la revista pueda ser una plataforma para resaltar la importancia de invertir en la formación continua de los profesionales de la salud, en particular en el área de la Odontogeriatría, para mejorar la calidad de vida de nuestros adultos mayores.

Palabras clave: 

Odontogeriatría, adulto mayor, Educación Médica, salud bucal, Estomatología.
Mass loss and yield uncertainty in low-mass asymptotic giant branch stars
Creators: name: Stancliffe, Richard J.
name: Jeffery, C. Simon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the uncertainty in surface abundances and yields of asymptotic giant branch (AGB) stars. We apply three different mass loss laws to a 1.5 solar mass star of metallicity Z=0.008 at the beginning of the thermally pulsing asymptotic giant branch (TP-AGB) phase. Efficient third dredge-up is found even at very low envelope mass, contrary to previous simulations with other evolution codes. We find that the yield of carbon is uncertain by about 15% and for most other light elements the yield is uncertain at the level of 20-80%. For iron group elements the uncertainty varies from around 30% for the more abundant species to over a factor of two for the less abundant radioactive species, like iron-60. The post-AGB surface abundances for this mass and metallicity are much more uncertain due to the dilution of dredged-up material in differing envelope masses in the later stages of the models. Our results are compared to known planetary nebula (PN) and post-AGB abundances. We find that the models are mostly consistent with observations but we are unable to reproduce observations of some of the isotopes.
description: 12 pages, 5 figures. Accepted for publication in MNRAS
Corner view on the crown domain
Creators: name: Kroetz, Bernhard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22Exx

description: In this paper I raise a question on the structure of the boundary of the crown domain.
description: revised final version, 9 p
Nonseparable interactions and orientational phenomena in liquid crystals
Creators: name: Gingras, Michel
Publisher: name: University of British Columbia
Year: 2011

description: Intermolecular interactions are anisotropic since they depend on the orientations of the interacting molecules. They are responsible for the orientational phase transitions observed in molecular systems. The effects of nonseparable interactions, which depend on both the molecular and intermolecular vector orientations, are investigated using Monte-Carlo simulations. It is found that for systems with quenched positional disorder, the nonseparability of the pair potential leads to orientational frustration. Expanding the pair potential in terms of its rotational invariants allows one to isolate random field terms whose presence are shown to be at the origin of the non-frustrated patches observed in such disordered systems. For liquid crystals, where translational and rotational degrees of freedom are in thermal equilibrium, Monte-Carlo results show that an ordering of the molecular orientations induces an ordering of the nearest-neighbor bond orientations only when the pair potential is nonseparable. These results suggest that it is necessary to reinterpret the mean-field theory of nematic liquid crystals as an approximation which neglects the presence of bond ordering in these systems. As well, they unravel the microscopic origin of the phenomeno-logical coupling between bond and molecular orientations invoked in Ginzburg-Landau theories of liquid crystals. The nonseparability of the intermolecular pair potential leads to a coupling between the nearest-neighbor bond orientational field and the molecular orientational field. It is shown that such coupling introduces new and interesting effects in liquid crystalline systems where interactions between the molecular and nearest-neighbor bond orientations are usually ignored.
Superconducting properties of Fe-based layered superconductor LaO$_{0.9}$F$_{0.1-δ}$FeAs
Creators: name: Chen, G. F.
name: Li, Z.
name: Li, G.
name: Zhou, J.
name: Wu, D.
name: Dong, J.
name: Hu, W. Z.
name: Zheng, P.
name: Chen, Z. J.
name: Yuan, H. Q.
name: Singleton, J.
name: Luo, J. L.
name: Wang, N. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have employed a new route to synthesize single phase F-doped LaOFeAs compound and confirmed the superconductivity above 20 K in this Fe-based system. We show that the new superconductor has a rather high upper critical field of about 54 T. A clear signature of superconducting gap opening below T$_c$ was observed in the far-infrared reflectance spectra, with 2$Δ/\textit{k}T_c\approx$3.5-4.2. Furthermore, we show that the new superconductor has electron-type conducting carrier with a rather low carrier density.
description: 4 pages, 5 figures, Phys. Rev. Lett. (accepted)
Exploring external urban relational processes: inter-city financial flows complementing global city-regions
Creators: name: Zhu, Bing
name: Pain, Kathy
name: Taylor, Peter J.
name: Derudder, Ben
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: External urban relations are commonly described as one of two types: hierarchical local hinterlands (central place theory) and networked non-local hinterworlds (central flow theory), referred to as town-ness and city-ness, respectively. This paper builds on and develops these generic concepts to make them specifically relevant to today’s corporate globalization. The central place process is represented by multi-nodal global city-regions, and the central flow process is represented by inter-city capital investment flows. We find that capital flows in global cities increase flows to proximate smaller cities within their regions. This empirical link between city-ness and town-ness has theoretical and policy implications.
A Direct Probe of Electronic Nematic Order; Symmetry Information in Scanning Tunneling Microscope Images
Creators: name: Doh, Hyeonjin
name: Kee, Hae-Young
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An electronic nematic state spontaneously breaks a point-group symmetry of an underlying lattice. As a result, the nematic-isotropic transition accompanies a Fermi surface distortion. However, the anisotropic nature of the nematic state at a macroscopic scale can be easily wiped out when domains of different orientations of nematic order exist. We suggest that a spatial pattern of local density of states (LDOS) in the presence of a non-magnetic impurity can be a direct probe of the nematic order. We study various patterns of LDOS across the quantum phase transition between the isotropic and nematic phases. Especially the Fourier transformed local density of states (FT-LDOS), which can be deduced from scanning tunneling microscope images, represent a transparent symmetry of an electronic structure. The application of our results to the bilayer ruthenate, Sr$_3$Ru$_2$O$_7$ is also discussed.
description: 5 pages, 5 figures
Additional file 1: of Ythdf2-mediated m6A mRNA clearance modulates neural development in mice
Creators: name: Li, Miaomiao
name: Zhao, Xu
name: Wang, Wei
name: Shi, Hailing
name: Pan, Qingfei
name: Lu, Zhike
name: Perez, Sonia
name: Suganthan, Rajikala
name: He, Chuan
name: Bjørås, Magnar
name: Klungland, Arne
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Figures S1–S10. This document contains additional supporting evidence for this study presented in the form of supplemental figures. (PDF 1160 kb)
Violation of the Equivalence Principle in Modified Theories of Gravity
Creators: name: Olmo, Gonzalo J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study modified theories of gravity of the f(R) type in Palatini formalism. For a generic f(R) lagrangian, we show that the metric can be solved as the product of a scalar function times a rank-two tensor (or auxiliary metric). The scalar function is sensitive to the local energy-momentum density. The auxiliary metric satisfies a set of equations very similar to Einstein's equations and, for weak sources, it can be approximated by the Minkowski metric. According to this, the metric coupled to the matter strongly departs from the Minkowskian one in the neighbourhood of any microscopic physical system. As a consequence, new gravitationally-induced interactions arise and lead to observable effects at microscopic and macroscopic scales. In particular, test body trajectories experience self-accelerations which depend on the internal structure and composition of the body. These facts make very unlikely the viability of Palatini f(R) models designed to change the late-time cosmic evolution.
description: 4 pages, references and small comments added, to appear in Phys.Rev.Lett
Rhipicephalus australis Fuller 1899
Creators: name: Petney, Trevor N.
name: Boulanger, Nathalie
name: Saijuntha, Weerachai
name: Chitimia-Dobler, Lidia
name: Pfeffer, Martin
name: Eamudomkarn, Chatanun
name: Andrews, Ross H.
name: Ahamad, Mariana
name: Putthasorn, Noppadon
name: Muders, Senta V.
name: Petney, David A.
name: Robbins, Richard G.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ixodida
Ixodidae
Rhipicephalus
Rhipicephalus australis

description: Rhipicephalus australis Fuller, 1899
 Originally described from cattle in Australia, R. australis was been considered a junior synonym of R. (Boophilus) microplus (e.g., Neumann 1901; Uilenberg 1962; Roberts 1970); however, the addition of genetic evidence suggesting the possibility that different species were included under the rubric R. microplus (Labruna et al. 2009) led to a detailed investigation, and Estrada-Peña et al. (2012) reinstated R. australis as a valid species. In continental Southeast Asia R. australis has been recorded from Cambodia (Estrada-Peña et al. 2012). It is also present in Australia, Indonesia, the Philippines, New Guinea and New Caledonia (Estrada-Peña et al. 2012), suggesting that it may be more common in continental Southeast Asia than is currently recognized.
 The female, male and larva are described in Estrada-Peña et al. (2012).
description: Published as part of Petney, Trevor N., Boulanger, Nathalie, Saijuntha, Weerachai, Chitimia-Dobler, Lidia, Pfeffer, Martin, Eamudomkarn, Chatanun, Andrews, Ross H., Ahamad, Mariana, Putthasorn, Noppadon, Muders, Senta V., Petney, David A. & Robbins, Richard G., 2019, Ticks (Argasidae, Ixodidae) and tick-borne diseases of continental Southeast Asia, pp. 1-89 in Zootaxa 4558 (1) on page 34, DOI: 10.11646/zootaxa.4558.1.1, http://zenodo.org/record/2613120
Gas Feedback on Stellar Bar Evolution
Creators: name: Berentzen, Ingo
name: Shlosman, Isaac
name: Martinez-Valpuesta, Inma
name: Heller, Clayton
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze evolution of live disk-halo systems in the presence of various gas fractions, f_gas less than 8% in the disk. We addressed the issue of angular momentum (J) transfer from the gas to the bar and its effect on the bar evolution. We find that the weakening of the bar, reported in the literature, is not related to the J-exchange with the gas, but is caused by the vertical buckling instability in the gas-poor disks and by a steep heating of a stellar velocity dispersion by the central mass concentration (CMC) in the gas-rich disks. The gas has a profound effect on the onset of the buckling -- larger f_gas brings it forth due to the more massive CMCs. The former process leads to the well-known formation of the peanut-shaped bulges, while the latter results in the formation of progressively more elliptical bulges, for larger f_gas. The subsequent (secular) evolution of the bar differs -- the gas-poor models exhibit a growing bar while gas-rich models show a declining bar whose vertical swelling is driven by a secular resonance heating. The border line between the gas-poor and -rich models lies at f_gas ~ 3% in our models, but is model-dependent and will be affected by additional processes, like star formation and feedback from stellar evolution. The overall effect of the gas on the evolution of the bar is not in a direct J transfer to the stars, but in the loss of J by the gas and its influx to the center that increases the CMC. The more massive CMC damps the vertical buckling instability and depopulates orbits responsible for the appearance of peanut-shaped bulges. The action of resonant and non-resonant processes in gas-poor and gas-rich disks leads to a converging evolution in the vertical extent of the bar and its stellar dispersion velocities, and to a diverging evolution in the bulge properties.
description: 12 pages, 12 figures, accepted for publication by the Astrophysical Journal. Minor corrections following the referee report
Discretization effects and the scalar meson correlator in mixed-action lattice simulations
Creators: name: Aubin, C.
name: Laiho, Jack
name: Van de Water, Ruth S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study discretization effects in a mixed-action lattice theory with domain-wall valence quarks and Asqtad-improved staggered sea quarks. At the level of the chiral effective Lagrangian, discretization effects in the mixed-action theory give rise to two new parameters as compared to the lowest order Lagrangian for staggered fermions -- the residual quark mass, m_res, and the mixed valence-sea meson mass-splitting, Delta_mix. We find that the size of m_res is approximately four times smaller than our lightest valence quark mass on our coarser lattice spacing, and comparable to that of simulations by RBC and UKQCD. We also find that the size of Delta_mix is comparable to the smallest of the staggered meson taste-splittings measured by MILC. Because lattice artifacts are different in the valence and sea sectors of the mixed-action theory, they give rise to unitarity-violating effects that disappear in the continuum limit. Such effects are expected to be mild for many quantities of interest, but are significant in the case of the isovector scalar (a_0) correlator. Specifically, once m_res, Delta_mix, and two other parameters that can be determined from the light pseudoscalar spectrum are known, the two-particle intermediate state "bubble" contribution to the scalar correlator is completely predicted within mixed-action chiral perturbation theory (MAChPT). We find that the behavior of the scalar meson correlator is quantitatively consistent with the MAChPT prediction; this supports the claim that MAChPT describes the dominant unitarity-violating effects in the mixed-action theory and can be used to remove lattice artifacts and recover physical quantities.
description: 33 pages, 12 figures
РАЗЛИЧИЕ В ЗНАЧЕНИЯХ ПОСТОЯННОЙ ФАРАДЕЯ
Creators: name: Зевацкий, Ю.Э.
Publisher: name: Санкт-Петербургский государственный технологический институт
Year: 2019
Subjects: постоянная Фарадея
электрохимический эквивалент
масс-спектрометрия
ускорение свободного падения

description: Постоянная Фарадея, численное значение которой равно заряду одного моля электронов, в зависимости от методики определения имеет незначительные расхождения. Предложено новое объяснение этому факту. Значения ускорения свободного падения для разных элементов незначительно различаются между собой.
Raman scattering in a Heisenberg {\boldmath $S=1/2$} antiferromagnet on the triangular lattice
Creators: name: Perkins, Natalia
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate two-magnon Raman scattering from the $S=1/2$ Heisenberg antiferromagnet on the triangular lattice, considering both the effect of renormalization of the one-magnon spectrum by 1/S corrections and final-state magnon-magnon interactions. The bare Raman intensity displays two peaks related to one-magnon van-Hove singularities. We find that 1/S self-energy corrections to the one-magnon spectrum strongly modify this intensity profile. The central Raman-peak is significantly enhanced due to plateaus in the magnon dispersion, the high frequency peak is suppressed due to magnon damping, and the overall spectral support narrows considerably. Additionally we investigate final-state interactions by solving the Bethe-Salpeter equation to $O(1/S)$. In contrast to collinear antiferromagnets, the non-collinear nature of the magnetic ground state leads to an irreducible magnon scattering which is retarded and non-separable already to lowest order. We show that final-state interactions lead to a rather broad Raman-continuum centered around approximately twice the 'roton'-energy. We also discuss the dependence on the scattering geometry.
description: 7 pages, 5 figures
title: Museen in Würzburg. Bildungsangebote für weiterführende Schulen. Eine Handreichung mit Lehrplanbezügen
Creators: name: Maidt, Petra
name: Fackler, Guido
name: Menke, Stefanie
Publisher: name: Universität Würzburg
Year: 2014
Subjects: subject: 370 Bildung und Erziehung

description: Schriften und Materialien der Würzburger Museologie; 1
Bridging Cultures, Enhancing Performance: Intercultural Communication Challenges of Thai SMEs in the Special Economic Zones
Creators: name: Chung, Ji Hye Jaime
Publisher: name: Mahidol University International College
Year: 2024
Subjects: Intercultural communication challenges
Intercultural competency
Training needs
Small and medium-sized enterprises (SMEs)
Thai Special Economic Zones (SEZ)

description: ASEAN Journal of Management & Innovation, 11, 2, 1 - 14
Quantum Impurity Entanglement
Creators: name: Sørensen, Erik S.
name: Chang, Ming-Shyang
name: Laflorencie, Nicolas
name: Affleck, Ian
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement in J_1-J_2, S=1/2 quantum spin chains with an impurity is studied using analytic methods as well as large scale numerical density matrix renormalization group methods. The entanglement is investigated in terms of the von Neumann entropy, S=-Tr rho_A log rho_A, for a sub-system A of size r of the chain. The impurity contribution to the uniform part of the entanglement entropy, S_{imp}, is defined and analyzed in detail in both the gapless, J_2 <= J_2^c, as well as the dimerized phase, J_2>J_2^c, of the model. This quantum impurity model is in the universality class of the single channel Kondo model and it is shown that in a quite universal way the presence of the impurity in the gapless phase, J_2 <= J_2^c, gives rise to a large length scale, xi_K, associated with the screening of the impurity, the size of the Kondo screening cloud. The universality of Kondo physics then implies scaling of the form S_{imp}(r/xi_K,r/R) for a system of size R. Numerical results are presented clearly demonstrating this scaling. At the critical point, J_2^c, an analytic Fermi liquid picture is developed and analytic results are obtained both at T=0 and T>0. In the dimerized phase an appealing picure of the entanglement is developed in terms of a thin soliton (TS) ansatz and the notions of impurity valence bonds (IVB) and single particle entanglement (SPE) are introduced. The TS-ansatz permits a variational calculation of the complete entanglement in the dimerized phase that appears to be exact in the thermodynamic limit at the Majumdar-Ghosh point, J_2=J_1/2, and surprisingly precise even close to the critical point J_2^c. In appendices the relation between the finite temperature entanglement entropy, S(T), and the thermal entropy, S_{th}(T), is discussed and and calculated at the MG-point using the TS-ansatz.
description: 62 pages, 27 figures, JSTAT macros
Community Needs and Participation to Nature-Based Tourism Development in Guiuan, Eastern Samar, Philippines
Creators: name: Cabaguing, Jordan M.
Publisher: name: Eastern Samar State University Guiuan Campus Philippines
Year: 2024
Subjects: Nature-based tourism
community participation
Community needs
sustainable tourism development
Guiuan Eastern Samar Philippines

description: ASEAN Journal of Management & Innovation, 11, 2, 15 - 32
The pre-inflationary vacuum in the cosmic microwave background
Creators: name: Powell, Brian A.
name: Kinney, William H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the effects on the primordial power spectrum of a period of radiation-dominated expansion prior to the inflationary era. If inflation lasts a total of only 60 e-folds or so, the boundary condition for quantum modes cannot be taken in the short-wavelength limit as in the standard perturbation calculation. Instead, the boundary condition is set by the vacuum state of the prior radiation-dominated epoch, which only corresponds to the inflationary vacuum state in the ultraviolet limit. This altered vacuum state results in a modulation of the inflationary power spectrum. We calculate the modification to a best-fit model from the WMAP3 data set, and find that power is suppressed at large scales. The modified power spectrum is favored only very weakly by the data.
description: 4 pages, 2 figures, references added. Version submitted to PRL. (v3: 9 pages, 4 figures, detailed justification of Eq. 11 of v2. Version accepted for publication by PRD.)
Additional file 2: of Prevalence of depression or depressive symptoms among people living with HIV/AIDS in China: a systematic review and meta-analysis
Creators: name: Wang, Tingting
name: Fu, Hanlin
name: Kaminga, Atipatsa
name: Li, Zhanzhan
name: Guo, Guiping
name: Chen, Lizhang
name: Li, Qiongxuan
Publisher: name: figshare
Year: 2018
Subjects: Medicine
Biotechnology
Chemical Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: â Modified Newcastle-Ottawa risk of bias scoring guideâ . (DOC 27Â kb)
Employee Engagement as a Mediator between Employee Experience and Perceived Organizational Performance for Sustainable Airport Operations after the Covid-19 Crisis: A Multigroup Analysis
Creators: name: Voralux Vorapuksirikool
Publisher: name: National Institute of Development Administration
Year: 2024
Subjects: Employee engagement
Employee experience
Organizational performance
Sustainable airport operations
COVID-19 crisis

description: ASEAN Journal of Management & Innovation, 11, 2, 33 - 52
Work Engagement, Motivation, and Performance of Employees of the Davao de Oro State College during COVID-19 Pandemic
Creators: name: RAYMUNDE, Pedro P.
Publisher: name: Davao de Oro State College, Compostela, Davao de Oro Philippines
Year: 2024
Subjects: education
governance
work engagement
motivation
higher education institution
Davao de Oro
Philippines

description: ASEAN Journal of Management & Innovation, 11, 2, 53 - 65