cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
T-duality for open strings in the presence of backgrounds and noncommutativity
Creators: name: Bayona, C. A. Ballon
name: Braga, Nelson R. F.
name: D'Andrea, Rafael
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the effect of T-duality on noncommutativity. Starting with open strings ending on a D2-brane wrapped on a $T^2$ torus in the presence of a Kalb Ramond field, we consider Buscher transformations on the coordinates and background. We find that the dual system is commutative. We also study alternative transformations that can preserve noncommutativity.
description: In this V3: more references included. Version to appear in J.Phys.A
Evolution of the neutron quasi-elastic scattering through the ferroelectric phase transition in 93%PbZn$_{1/3}$Nb$_{2/3}$O$_3$ - 7% PbTiO$_3$
Creators: name: Rotaru, G. -M.
name: Gvasaliya, S. N.
name: Roessli, B.
name: Kojima, S.
name: Lushnikov, S. G.
name: Günter, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that the neutron diffuse scattering in relaxor ferroelectric (1-x)PbZn$_{1/3}$Nb$_{2/3}$O$_{3}$ - x PbTiO$_{3}$ (x=0.07) consists of two components. The first component is strictly elastic but extended in q-space and grows below 600 K. The second component, that was not reported before for the (1-x)PbZn$_{1/3}$Nb$_{2/3}$O$_{3}$ - x PbTiO$_{3}$ (x=0.07) relaxor ferroelectrics, is quasi-elastic with a line-width that has a similar temperature dependence as the width of the central peak observed by Brillouin spectroscopy. The temperature dependence of the susceptibility of the quasi-elastic scattering has a maximum at the ferroelectric transition.
Grassmann Integral Representation for Spanning Hyperforests
Creators: name: Caracciolo, Sergio
name: Sokal, Alan D.
name: Sportiello, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Given a hypergraph G, we introduce a Grassmann algebra over the vertex set, and show that a class of Grassmann integrals permits an expansion in terms of spanning hyperforests. Special cases provide the generating functions for rooted and unrooted spanning (hyper)forests and spanning (hyper)trees. All these results are generalizations of Kirchhoff's matrix-tree theorem. Furthermore, we show that the class of integrals describing unrooted spanning (hyper)forests is induced by a theory with an underlying OSP(1|2) supersymmetry.
description: 50 pages, it uses some latex macros. Accepted for publication on J. Phys. A
Additional file 5 of Genome-wide DNA methylation profiling is able to identify prefibrotic PMF cases at risk for progression to myelofibrosis
Creators: name: Lehmann, Ulrich
name: Stark, Helge
name: Bartels, Stephan
name: Schlue, Jerome
name: Büsche, Guntram
name: Kreipe, Hans
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Table S1. Gene set enrichment analysis of differentially methylated regions against the Gene Ontology database.
Silicon strip sensor layout for CBM STS
Creators: name: Soyk, D.
name: Tymchuk, I.
name: Heuser, J.
name: Schmidt, C. J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
Noether's first theorem and the energy-momentum tensor ambiguity problem
Creators: name: Baker, Mark Robert
name: Linnemann, Niels
name: Smeenk, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Noether's theorems are widely praised as some of the most beautiful and useful results in physics. However, if one reads the majority of standard texts and literature on the application of Noether's first theorem to field theory, one immediately finds that the ``canonical Noether energy-momentum tensor" derived from the 4-parameter translation of the Poincaré group does not correspond to what's widely accepted as the ``physical'' energy-momentum tensor for central theories such as electrodynamics. This gives the impression that Noether's first theorem is in some sense not working. In recognition of this issue, common practice is to ``improve" the canonical Noether energy-momentum tensor by adding suitable ad-hoc ``improvement" terms that will convert the canonical expression into the desired result. On the other hand, a less common but distinct method developed by Bessel-Hagen considers gauge symmetries as well as coordinate symmetries when applying Noether's first theorem; this allows one to uniquely derive the accepted physical energy-momentum tensor without the need for any ad-hoc improvement terms in theories with exactly gauge invariant actions. $\dots$ Using the converse of Noether's first theorem, we show that the Bessel-Hagen type transformations are uniquely selected in the case of electrodynamics, which powerfully dissolves the methodological ambiguity at hand. We then go on to consider how this line of argument applies to a variety of other cases, including in particular the challenge of defining an energy-momentum tensor for the gravitational field in linearized gravity. Finally, we put the search for proper Noether energy-momentum tensors into context with recent claims that Noether's theorem and its converse make statements on equivalence classes of symmetries and conservation laws$\dots$
description: 30 pages
Geant4-based calibration of an organic liquid scintillator
Creators: name: Mauritzson, N.
name: Fissum, K. G.
name: Perrey, H.
name: Annand, J. R. M.
name: Frost, R. J. W.
name: Hall-Wilton, R.
name: Jebali, R. Al
name: Kanaki, K.
name: Maulerova, V.
name: Messi, F.
name: Rofors, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A light-yield calibration of an NE 213A organic liquid scintillator detector has been performed using both monoenergetic and polyenergetic gamma-ray sources. Scintillation light was detected in a photomultiplier tube, and the corresponding pulses were subjected to waveform digitization on an event-by-event basis. The resulting Compton edges have been analyzed using a Geant4 simulation of the detector which models both the interactions of the ionizing radiation as well as the transport of scintillation photons. The simulation is calibrated and also compared to well-established prescriptions used to determine the Compton edges, resulting ultimately in light-yield calibration functions. In the process, the simulation-based method produced information on the gain and intrinsic pulse-height resolution of the detector. It also facilitated a previously inaccessible understanding of the systematic uncertainties associated with the calibration of the scintillation-light yield. The simulation-based method was also compared to well-established numerical prescriptions for locating the Compton edges. Ultimately, the simulation predicted as much as 17% lower light-yield calibrations than the prescriptions. These calibrations indicate that approximately 35% of the scintillation light associated with a given gamma-ray reaches the photocathode. It is remarkable how well two 50 year old prescriptions for calibrating scintillation-light yield in organic scintillators have stood the test of time.
description: 20 pages, 8 figures, 4 tables
Lenticulina gibba
Creators: name: Symphonia, Tabita K.
name: Senthil, Nathan D.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Foraminifera
Globothalamea
Rotaliida
Nummulitidae
Lenticulina
Lenticulina gibba

description: Lenticulina gibba (d’Orbigny, 1839a)
Figure 2.5
1839a Cristellaria gibba d’Orbigny, p. 292, no. 17.
2001 Lenticulina gibba (d’Orbigny); Szarek, p. 203, pl. 15, figs. 1-2.
2002 Lenticulina gibba (d’Orbigny); Kaminski, Aksu, Box, Hiscott, Filipescu, and Al-Salameen, p. 172, pl. 2, fig. 6.
2010 Lenticulina gibba (d’Orbigny); Margreth, p. 150, pl. 12, fig. 7a-b.
2012 Lenticulina gibba (d’Orbigny); Debenay, p. 223.
Description. Test oblong, biconvex, wall finely perforate, surface smooth; chambers elongate, gradually increasing in size, chamber arrangement planispiral; periphery slightly keeled, sutures curved; aperture terminal, radiate, with a slightly longer slit on the apertural side.
description: Published as part of Symphonia, Tabita K. & Senthil, Nathan D., 2019, Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India, pp. 1-89 in Palaeontologia Electronica (55 A) (55 A) 22 (3) on pages 5-9, DOI: 10.26879/811, http://zenodo.org/record/10961656
A dynamic density functional theory for particles in a flowing solvent
Creators: name: Rauscher, Markus
name: Dominguez, Alvaro
name: Krueger, Matthias
name: Penna, Florencia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a dynamic density functional theory (dDFT) which takes into accou nt the advection of the particles by a flowing solvent. For potential flows we can use the same closure as in the absence of solvent flow. The structure of the resulting advected dDFT suggests that it could be used for non-potential flows as well. We apply this dDFT to Brownian particles (e.g., polymer coils) in a solvent flowing around a spherical obstacle (e.g., a colloid) and compare the results with direct simulations of the underlying Brownian dynamics. Although numerical limitations do not allow for an accurate quantitative check of the advected dDFT both show the same qualitative features. In contrast to previous works which neglected the deformation of the flow by the obstacle, we find that the bow-wave in the density distribution of particles in front of the obstacle as well as the wake behind it are reduced dramatically. As a consequence the friction force exerted by the (polymer) particles on the colloid can be reduced drastically.
description: 7 pages, 5 figures, 2 tables, submitted
The Chemical and Ionization Conditions in Weak Mg II Absorbers
Creators: name: Narayanan, Anand
name: Charlton, Jane C.
name: Misawa, Toru
name: Green, Rebecca E.
name: Kim, Tae-Sun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of the chemical and ionization conditions in a sample of 100 weak Mg II absorbers identified in the VLT/UVES archive of quasar spectra. Using a host of low ionization lines associated with each absorber in this sample, and on the basis of ionization models, we infer that the metallicity in a significant fraction of weak Mg II clouds is constrained to values of solar or higher, if they are sub-Lyman limit systems. Based on the observed constraints, we present a physical picture in which weak Mg II absorbers are predominantly tracing two different astrophysical processes/structures. A significant population of weak Mg II clouds, those in which N(Fe II) is much less than N(Mg II), identified at both low (z ~ 1) and high (z ~ 2) redshift, are potentially tracing gas in the extended halos of galaxies, analogous to the Galactic high velocity clouds. These absorbers might correspond to alpha-enhanced interstellar gas expelled from star-forming galaxies, in correlated supernova events. On the other hand, N(FeII) approximately equal to N(Mg II) clouds, which are prevalent only at lower redshifts (z < 1.5), must be tracing Type Ia enriched gas in small, high metallicity pockets in dwarf galaxies, tidal debris, or other intergalactic structures.
description: 35 pages (including tables & figures). Accepted for publication in ApJ. A high resolution version of the paper is available at "http://www.astro.wisc.edu/~anand/weakMgII.pdf"
Aromatic emission from the ionised mane of the Horsehead nebula
Creators: name: Compiegne, M.
name: Abergel, A.
name: Verstraete, L.
name: Reach, W. T.
name: Habart, E.
name: Smith, J. D.
name: Boulanger, F.
name: Joblin, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the evolution of the Aromatic Infrared Bands (AIBs) emitters across the illuminated edge of the Horsehead nebula and especially their survival and properties in the HII region. We present spectral mapping observations taken with the Infrared Spectrograph (IRS) at wavelengths 5.2-38 microns. A strong AIB at 11.3 microns is detected in the HII region, relative to the other AIBs at 6.2, 7.7 and 8.6 microns. The intensity of this band appears to be correlated with the intensity of the [NeII] at 12.8 microns and of Halpha, which shows that the emitters of the 11.3 microns band are located in the ionised gas. The survival of PAHs in the HII region could be due to the moderate intensity of the radiation field (G0 about 100) and the lack of photons with energy above about 25eV. The enhancement of the intensity of the 11.3 microns band in the HII region, relative to the other AIBs can be explained by the presence of neutral PAHs. Our observations highlight a transition region between ionised and neutral PAHs observed with ideal conditions in our Galaxy. A scenario where PAHs can survive in HII regions and be significantly neutral could explain the detection of a prominent 11.3 microns band in other Spitzer observations.
description: 9 pages, 9 figures, accepted for publication in A&A
APPROACHES AIMED AT MASTERING THE CONTENT OF THE TEXT THROUGH THE ANALYSIS OF THE "RAVSHAN" EPIC
Creators: name: Jazilova, Malika
Publisher: name: Zenodo
Year: 2023

description: In this article, in the analysis of the "Ravshan" epic, special attention is paid to approaches aimed at mastering the content of the text, in particular, to the tasks of preparing a presentation using information technologies, interpreting the content of the text. One of the main methodological conditions for working on the text of Ravshan Dostani is to prepare students to understand the text, to read consciously and expressively, to perceive and react. The nature of such preparation is to determine the purpose of the lesson, the content of the material being studied, and to what extent the students have an understanding of it. Students have a strong tendency to complete each task independently. In this period, we are talking about applying approaches that go deeper into the essence of the text, taking into account that the student will be inspired by tasks that he did not encounter in the previous stages.
Open-Access-Vernetzungsstellen und -Initiativen der deutschen Bundesländer
Creators: name: Landesinitiative Openacess.Nrw
name: Open-Access-Büro Berlin
name: Open-Access-Infopoint Schleswig-Holstein
name: Projekt "Open Access An HAWen Und PHen In Baden-Württemberg"
name: Vernetzungs- Und Kompetenzstelle Open Access Brandenburg
Publisher: name: Zenodo
Year: 2022
Subjects: International Open Access Week 2022, Open Access, Berlin, Brandenburg, Nordrhein-Westfalen, Schleswig-Holstein, Baden-Württemberg

description: Das Poster gibt einen Überblick über die Open-Access-Vernetzungstellen und -Initiativen in den deutschen Bundesländern.
Additional file 1 of The Matthews correlation coefficient (MCC) is more reliable than balanced accuracy, bookmaker informedness, and markedness in two-class confusion matrix evaluation
Creators: name: Chicco, Davide
name: Tötsch, Niklas
name: Jurman, Giuseppe
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1 Known randomness simulation algorithm and formulas of the additional metrics.
Influence of Device Geometry on Transport Properties of Topological Insulator Microflakes
Creators: name: Gao, Fan
name: Li, Yongqing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the transport studies of topological insulators, microflakes exfoliated from bulk single crystals are often used because of the convenience in sample preparation and the accessibility to high carrier mobilities. Here, based on finite element analysis, we show that for the non-Hall-bar shaped topological insulator samples, the measured four-point resistances can be substantially modified by the sample geometry, bulk and surface resistivities, and magnetic field. Geometry correction factors must be introduced for accurately converting the four-point resistances to the longitudinal resistivity and Hall resistivity. The magnetic field dependence of inhomogeneous current density distribution can lead to pronounced positive magnetoresistance and nonlinear Hall effect that would not exist in the samples of ideal Hall bar geometry.
Additional file 1 of Implementation science in maternity care: a scoping review
Creators: name: Dadich, Ann
name: Piper, Annika
name: Coates, Dominiek
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Additional file 1.
Nachhaltige Stadtentwicklung als Maßnahme bei den Herausforderungen im Umgang mit Hitzeentwicklung und ihren Konsequenzen für Mensch und Natur
Creators: name: Aschentrup, Leona
name: Brüggemann, Hellen
name: Eisen, Maximilian
name: Heckes, Kolja
name: McCall, Timothy
name: Siegler, Marcel
name: Wrona, Kamil J.
Publisher: name: Netzwerk Junge Generation Deutschland-Korea
Year: 2022
Subjects: subject: 610
subject: Nachhaltige Stadtentwicklung
subject: Hitzeentwicklung in der Stadt
subject: Umwelt und Gesundheit
subject: Pulic Health

description: Das Klima verändert sich und damit einhergehend auch unterschiedliche Bereiche des Lebens. Sowohl in Deutschland als auch in Südkorea sind die Durchschnittstemperaturen in den vergangenen einhundert Jahren merklich gestiegen. Trockene Sommer und milde, feuchte Winter stellen dabei keine Seltenheit mehr dar. Auch lassen sich entsprechende Veränderungen in der Länge und der Dauer von Jahreszeiten feststellen. Des Weiteren haben beide Länder zunehmend mit Wetterextremen bzw. der Zunahme von Unwettern mit deutlich mehr Katastrophen- und Zerstörungspotential umzugehen. Dabei treiben insbesondere Städte den Klimawandel zusätzlich an, denn durch die zunehmende Besiedlung, die Technisierung oder auch die anthropogene Wärmeproduktion (Menschenmengen, Industrie, Verkehr, etc.) tragen sie zur Erderwärmung bei. Städte katalysieren also zusätzlich die bereits dramatischen Folgen des Klimawandels. Eine klimagerechte Entwicklung von Städten, im Sinne baulicher, aber auch infrastruktureller sowie sozialer Maßnahmen, spielt daher eine erhebliche Rolle im Kampf gegen den Klimawandel. Nicht zuletzt soll damit den Herausforderungen im Kontext von Gesundheit und Krankheit, die durch den Klimawandel weiter verstärkt werden, entgegengewirkt werden. Hierbei ist die klimabedingte Hitzeentwicklung in der Stadt eine der wichtigsten Herausforderungen. Vor diesem Hintergrund widmet sich das vorliegende Thesenpapier den Auswirkungen der zunehmenden Hitze auf die Stadtentwicklung. Neben Ursachen sollen vor allem auch Konsequenzen und damit Lösungsansätze angesprochen werden. Beide Länder weisen bereits gute Ansätze im Kampf gegen die Hitzeentwicklung in der Stadt und die damit einhergehenden Folgen auf, die Potenziale sind aber noch längst nicht ausgeschöpft. Auf Grundlage dieser Diskussion sollen schließlich Handlungsempfehlungen für eine nachhaltige Stadtentwicklung, welche die klimatischen Herausforderungen mit Fokus auf Hitzeentwicklung berücksichtigt, an Politik, Wirtschaft und Wissenschaft formuliert werden.
Additional file 1 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Figure 1. Boxplots of IgG antibody concentrations against PCV-13 serotypes (serotype indicated above each box) in low and high responders (n = 12 each; based on aggregated IgG antibody concentration 1 month post-vaccination) as well as middle responders (n = 14) and children without available DNA (n = 36).
Additional file 2 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 2: Figure 2. Boxplots of OPA antibody titers against PCV-13 serotypes (serotype indicated above each box) in low and high responders (n = 12 each; based on aggregated IgG antibody concentration 1 month post-vaccination) as well as middle responders (n = 14) and children without available DNA (n = 36).
Propagation of high-energy cosmic rays in extragalactic turbulent magnetic fields: resulting energy spectrum and composition
Creators: name: Globus, N.
name: Allard, D.
name: Parizot, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We extend previous studies of mixed-composition extragalactic cosmic-ray source models, by investigating the influence of a non-negligible extragalactic magnetic field on the propagated cosmic-ray spectrum and composition. We study the transport of charged particles in turbulent fields and the transition from a ballistic to a diffusive propagation regime. We introduce a method allowing a fast integration of the particle trajectories, which allows us to calculate extragalactic cosmic-ray spectra in the general case, without using either the diffusive or the rectilinear approximation. We find that the main features of the mixed-composition models -- regarding the interpretation of the ankle and the non-monotonous evolution of the average cosmic-ray mass -- remain essentially unchanged as long as the magnetic field intensity does not exceed a few nG.
description: 15 pages, 20 figures
Squeezing Out the Entropy of Fermions in Optical Lattices
Creators: name: Ho, Tin-Lun
name: Zhou, Qi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: At present, there is considerable interest in using atomic fermions in optical lattices to emulate the mathematical models that have been used to study strongly correlated electronic systems. Some of these models, such as the two dimensional fermion Hubbard model, are notoriously difficult to solve, and their key properties remain controversial despite decades of studies. It is hoped that the emulation experiments will shed light on some of these long standing problems. A successful emulation, however, requires reaching temperatures as low as $10^{-12}$K and beyond, with entropy per particle far lower than what can be achieved today. Achieving such low entropy states is an essential step and a grand challenge of the whole emulation enterprise. In this paper, we point out a method to literally squeeze the entropy out from a Fermi gas into a surrounding Bose-Einstein condensed gas (BEC), which acts as a heat reservoir. This method allows one to reduce the entropy per particle of a lattice Fermi gas to a few percent of the lowest value obtainable today.
description: 6 pages, 3 figures. This paper has appeared in the Early Edition of Proceeding of National Academy on April 13, 2009. Please see http://www.pnas.org/cgi/doi/10.1073/pnas.0809862105
Collective processes of an ensemble of spin-1/2 particles
Creators: name: Chase, Bradley A.
name: Geremia, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When the dynamics of a spin ensemble are expressible solely in terms of symmetric processes and collective spin operators, the symmetric collective states of the ensemble are preserved. These many-body states, which are invariant under particle relabeling, can be efficiently simulated since they span a subspace whose dimension is linear in the number of spins. However, many open system dynamics break this symmetry, most notably when ensemble members undergo identical, but local, decoherence. In this paper, we extend the definition of symmetric collective states of an ensemble of spin-1/2 particles in order to efficiently describe these more general collective processes. The corresponding collective states span a subspace which grows quadratically with the number of spins. We also derive explicit formulae for expressing arbitrary identical, local decoherence in terms of these states.
description: 12 pages, see 0805.2910 for simulations using these methods
Asteroid pairs: method validation and new candidates
Creators: name: Kyrylenko, Ihor
name: Krugly, Yurij N.
name: Golubov, Oleksiy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: An asteroid pair can be described as two asteroids with highly similar heliocentric orbits that are genetically related but not gravitationally bound. They can be produced by asteroid collisions or rotational fission. Although over 200 asteroid pairs are known, many more are remaining to be identified, especially among the newly discovered asteroids. The purpose of our work is to find new asteroid pairs in the inner part of the main belt with a new pipeline for asteroid pair search, as well as to validate the pipeline on a sample of known asteroid pairs. Initially, we select pair candidates in the five-dimensional space of osculating orbital elements. Then the candidates are confirmed using numerical modeling with the backtrack integration of their orbits including the perturbations from the largest main-belt asteroids, as well as the influence of the non-gravitational Yarkovsky effect. We performed a survey of the inner part of the main belt and found 10 new probable asteroid pairs. Their estimated formation ages lie between 30 and 400 kyr. In addition, our pipeline was tested on a sample of 17 known pairs, and our age estimates agreed with the ones indicated in literature in most of the cases.
description: Accepted to A&A. 10 pages, 3 figures, 3 tables
Possible Superconductivity in Fe-Sb Based Materials: Density Functional Study of LiFeSb
Creators: name: Zhang, Lijun
name: Subedi, Alaska
name: Singh, D. J.
name: Du, Mao-Hua
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the electronic and other properties of the hypothetical compound LiFeSb in relation to superconducting LiFeAs and FeSe using density functional calculations. The results show that LiFeSb in the LiFeAs structure would be dynamically stable in the sense of having no unstable phonon modes, and would have very similar electronic and magnetic properties to the layered Fe based superconductors. Importantly, a very similar structure for the Fermi surface and a spin density wave related to but stronger than that in the corresponding As compound is found. These results are indicative of possible superconductivity analogous to the Fe-As based compounds if the spin density wave can be suppressed by doping or other means. Prospects for synthesizing this material in pure form or in solid solution with FeTe are discussed.
description: Additional discussion about superconductivity in the Fe materials in relation to chi(q) and experimental observations
Additional file 3 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 3: Figure 3. Boxplots of IgG antibody-secreting cell frequencies against selected PCV-13 serotypes (serotype indicated above each box) in low and high responders (n = 12 each; based on aggregated IgG antibody concentration 1 month post-vaccination) as well as middle responders (n = 14) and children without available DNA (n = 36).
Removing center of mass effects in response function and sum rule calculations based on the harmonic oscillator basis
Creators: name: Akdogan, K.
name: Layh, D.
name: Weinberger, I.
name: Simonis, J.
name: Barnea, N.
name: Bacca, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Response functions are at the heart of any comparison of theory with experiment in studies of the nuclear dynamics with electroweak probes. Calculations performed in the laboratory frame often suffer from center of mass contaminations that need to be removed. By confining the system in a harmonic oscillator, we derive a set of analytical formulas to subtract the center of mass effects from calculations of response functions and associated sum rules. After a general analytical derivation, we first deal specifically with the longitudinal response function appearing in electron scattering and provide expressions for the center of mass correcting functions. Next, we present a proof of principle study for the case of the electric dipole sum rules in a two-body problem with a numerical implementation of our formalism. These steps pave the way to applying the proposed method to heavier nuclei in the future.
description: 14 pages, 4 figures
Local stability of ergodic averages
Creators: name: Avigad, Jeremy
name: Gerhardy, Philipp
name: Towsner, Henry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 37A30, 03F60, 03F03

description: The mean ergodic theorem is equivalent to the assertion that for every function K and every epsilon, there is an n with the property that the ergodic averages A_m f are stable to within epsilon on the interval [n,K(n)]. We show that even though it is not generally possible to compute a bound on the rate of convergence of a sequence of ergodic averages, one can give explicit bounds on n in terms of K and || f || / epsilon. This tells us how far one has to search to find an n so that the ergodic averages are "locally stable" on a large interval. We use these bounds to obtain a similarly explicit version of the pointwise ergodic theorem, and show that our bounds are qualitatively different from ones that can be obtained using upcrossing inequalities due to Bishop and Ivanov. Finally, we explain how our positive results can be viewed as an application of a body of general proof-theoretic methods falling under the heading of "proof mining."
description: Minor errors corrected. To appear in Transactions of the AMS
Coherent single atom shuttle between two Bose-Einstein condensates
Creators: name: Fischer, Uwe R.
name: Iniotakis, Christian
name: Posazhennikova, Anna
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study an atomic quantum dot representing a single hyperfine "impurity" atom which is coherently coupled to two well-separated Bose-Einstein condensates, in the limit when the coupling between the dot and the condensates dominates the inter-condensate tunneling coupling. It is demonstrated that the quantum dot by itself can induce large-amplitude Josephson-like oscillations of the particle imbalance between the condensates, which display a two-frequency behavior. For noninteracting condensates, we provide an approximate solution to the coupled nonlinear equations of motion which allows us to obtain these two frequencies analytically.
description: 4 pages of RevTex4, 4 figures; Rapid Communication in Physical Review A
Organizational and dynamical aspects of a small network with two distinct communities : Neo creationists vs. Evolution Defenders
Creators: name: Cantu, A. Garcia
name: Ausloos, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Social impacts and degrees of organization inherent to opinion formation for interacting agents on networks present interesting questions of general interest from physics to sociology. We present a quantitative analysis of a case implying an evolving small size network, i.e. that inherent to the ongoing debate between modern creationists (most are Intelligent Design (ID) proponents (IDP)) and Darwin's theory of Evolution Defenders (DED)). This study is carried out by analyzing the structural properties of the citation network unfolded in the recent decades by publishing works belonging to members of the two communities. With the aim of capturing the dynamical aspects of the interaction between the IDP and DED groups, we focus on $two$ key quantities, namely, the {\it degree of activity} of each group and the corresponding {\it degree of impact} on the intellectual community at large. A representative measure of the former is provided by the {\it rate of production of publications} (RPP), whilst the latter can be assimilated to the{\it rate of increase in citations} (RIC). These quantities are determined, respectively, by the slope of the time series obtained for the number of publications accumulated per year and by the slope of a similar time series obtained for the corresponding citations. The results indicate that in this case, the dynamics can be seen as geared by triggered or damped competition. The network is a specific example of marked heterogeneity in exchange of information activity in and between the communities, particularly demonstrated through the nodes having a high connectivity degree, i.e. opinion leaders.
description: 10 pages, 4 figures, 2 tables, 52 references
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000, F. 599 Patti, Servizio Geologico d'Italia - ISPRA
Creators: name: Giunta, G.
name: Carbone, S.
name: Catalano, R.
name: Di Maio, D.
Publisher: name: INFN Open Access Repository
Year: 2013
Subjects: carta geologica, Patti, Sicilia, Regione Siciliana, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 599 Patti della Carta Geologica d'Italia alla scala 1:50.000. 222 pp.
Additional file 4 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 4. QQ plot of the observed p-values against the expected p-values.
Hybrid parametric/smooth inversion of electrical resistivity tomography data
Creators: name: Herring, Teddi
name: Heagy, Lindsey J.
name: Pidlisecky, Adam
name: Cey, Edwin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The standard smooth electrical resistivity tomography inversion produces an estimate of subsurface conductivity that has blurred boundaries, damped magnitudes, and often contains inversion artifacts. In many problems the expected conductivity structure is well constrained in some parts of the subsurface, but incorporating prior information in the inversion is not a trivial task. In this study we developed an electrical resistivity tomography inversion algorithm that combines parametric and smooth inversion strategies. In regions where the subsurface is well constrained, the model was parameterized with only a few variables, while the rest of the subsurface was parameterized with voxels. We tested this hybrid inversion strategy on two synthetic models that contained a well constrained highly resistive or conductive near-surface horizontal layer and a target beneath. In each testing scenario, the hybrid inversion improved resolution of feature boundaries and magnitudes and had fewer inversion artifacts than the standard smooth inversion. A sensitivity analysis showed that the hybrid inversion successfully recovered subsurface features when a range of regularization parameters, initial models, and data noise levels were tested. The hybrid inversion strategy can potentially be expanded to a range of applications including marine surveys, permafrost/frozen ground studies, urban geophysics, or anywhere that prior information allows part of the model to be constrained with simple geometric shapes.
How to tell a gravastar from a black hole
Creators: name: Chirenti, Cecilia B. M. H.
name: Rezzolla, Luciano
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gravastars have been recently proposed as potential alternatives to explain the astrophysical phenomenology traditionally associated to black holes, raising the question of whether the two objects can be distinguished at all. Leaving aside the debate about the processes that would lead to the formation of a gravastar and the astronomical evidence in their support, we here address two basic questions: Is a gravastar stable against generic perturbations? If stable, can an observer distinguish it from a black hole of the same mass? To answer these questions we construct a general class of gravastars and determine the conditions they must satisfy in order to exist as equilibrium solutions of the Einstein equations. For such models we perform a systematic stability analysis against axial-perturbations, computing the real and imaginary parts of the eigenfrequencies. Overall, we find that gravastars are stable to axial perturbations, but also that their quasi-normal modes differ from those of a black hole of the same mass and thus can be used to discern, beyond dispute, a gravastar from a black hole.
description: 16 pages, 13 figures, minor improvement
Change in Hamiltonian General Relativity with Spinors
Creators: name: Pitts, J. Brian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In Hamiltonian GR, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best. By construing change as essential time dependence, can one find change locally in Hamiltonian GR with spinors? This paper is motivated by tendencies in space-time philosophy to slight fermionic/spinorial matter, in Hamiltonian GR to misplace changes of time coordinate, and in treatments of the Einstein-Dirac equation to include a gratuitous local Lorentz gauge symmetry. Spatial dependence is dropped in most of the paper. To include all and only the coordinate freedom, the Einstein-Dirac equation is investigated using the Schwinger time gauge and Kibble-Deser symmetric triad condition as a $3+1$ version of the DeWitt-Ogievetsky-Polubarinov nonlinear group realization formalism that dispenses with a tetrad and local Lorentz gauge freedom. Change is the lack of a time-like stronger-than-Killing field for which the Lie derivative of the metric-spinor complex vanishes. An appropriate $3+1$-friendly form of the Rosenfeld-Anderson-Bergmann-Castellani gauge generator $G$, a tuned sum of first class-constraints, changes the canonical Lagrangian by a total derivative and implements changes of time coordinate for solutions.
description: Forthcoming in Foundations of Physics
Additional file 5 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 5. Distributions of the 721 age-dependent DMPs (a) in the island context (island, shore, shelf, open sea) and (b) in the genomic regions (1st exon, 3’ UTR, 5’ UTR, body, TSS1500, TSS200).
Additional file 6 of Changes in epigenetic profiles throughout early childhood and their relationship to the response to pneumococcal vaccination
Creators: name: Pischedda, Sara
name: O’Connor, Daniel
name: Fairfax, Benjamin P.
name: Salas, Antonio
name: Martinon-Torres, Federico
name: Pollard, Andrew J.
name: Trück, Johannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 6. (a) Principal component analysis and (b) unsupervised clustering and heatmap of 5233 differentially methylated CpG sites detected using a threshold of an uncorrected p-value
Evidências de validade da versão brasileira do Exercise Motivation Inventory-2 em contexto de academia e personal training
Creators: name: Klain, Ingi P
name: De Matos, Dihogo Gama
name: Cid, Luís
name: Aidar, Felipe José
name: Leitão, José Carlos
name: Moutão, João Miguel
Publisher: name: Motricidade
Year: 2015

description: Este estudo teve como objetivos verificar a validade fatorial e a validade interna da versão brasileira do Exercise Motivation Inventory-2 (EMI-2) e comparar os principais motivos para prática de exercício tendo em conta os contextos de academia e personal training. Um total de 588 praticantes de exercício da cidade de Pelotas/RS/Brasil (405 de academia e 183 de personal training) preencheram o EMI-2, o qual é constituído por 51 itens, agrupados em 14 motivos (fatores) para prática de exercício físico. A validade fatorial do EMI-2 foi testada através da realização de análises fatoriais confirmatórias e a validade interna através do alfa de Cronbach. Para a verificar o efeito do contexto nos motivos foi utilizada a MANOVA e calculado o tamanho do efeito. Os resultados obtidos dão suporte à estrutura original do EMI-2 com 14 fatores, nesta amostra. Verificou-se um efeito multivariado significativo do contexto sobre os motivos de prática [Wilks’ λ = 0.912, F (14, 573.000) = 3.9, p < 0.001,  η² = 0.088]. Os motivos de “Prazer”, “Força e resistência”, “Desafio”, “Socialização”, “Competição” e “Reconhecimento Social” foram significativamente superiores no contexto de academia e os motivos de “Agilidade” e “Prevenção de Doenças” foram significativamente superiores no contexto de personal training.
description: Motricidade, Vol 11 No 2 (2015)
Insatisfação corporal e qualidade de vida durante a menarca e sua relação com a renda familiar e o índice de massa corporal: Um estudo longitudinal
Creators: name: Santos, Mara Lucia Blanc
name: Novaes, Jefferson Silva
name: Monteiro, Lilian Alves Da Costa
name: Fernandes, Helder Miguel Graça
Publisher: name: Motricidade
Year: 2015

description: Este estudo analisou a associação entre a renda familiar e níveis de índice de massa corporal com a imagem corporal e qualidade de vida ao longo da menarca; e a variação da relação entre a renda familiar e o IMC com a imagem corporal e a qualidade de vida em distintos momentos da menarca (momentos 1, 2 e 3). O estudo caracterizou-se por um delineamento longitudinal com adolescentes de 10 a 13 anos, IMC de 18,98 kg/m2. Os dados foram coletados pelo Body Shape Questionnaire e Autoquestionnaire Qualité de Vie Enfant Imagé no momento 1 no ano de 2010, no  momento 2 no ano de 2011 e no momento 3 no ano de 2012. Os principais resultados indicaram: que o IMC se relacionou positivamente com o escore total de insatisfação corporal no momento 1, 2 e 3; a análise nos níveis de renda familiar e IMC indicaram melhoras positivas ao longo da menarca; e o escore de qualidade de vida aumentou do momento 1 para o 2, tendo reduzido do momento 2 para o 3. Concluiu-se que as adolescentes revelaram uma menor insatisfação com a imagem corporal com o passar do tempo, evidenciada por um IMC normal; e ao longo do tempo a baixa insatisfação da imagem corporal revelou-se pela associação positiva da renda familiar e do IMC. Já a qualidade de vida apresentou-se melhor entre o momento 1 e 2 da menarca, mas entre o momento 2 e 3 ocorreu uma diminuição da qualidade de vida das adolescentes.
description: Motricidade, Vol 11 No 2 (2015)
Proposta de sistematização de ensino do futebol baseada em jogos: desenvolvimento do conhecimento tático em jogadores com 10 e 11 anos de idade
Creators: name: Thomaz De Aquino, Rodrigo
name: Marques, Renato Rodrigues
name: Gonçalves, Luiz Guilherme Cruz
name: Vieira, Luiz Henrique Palucci
name: Bedo, Bruno Luiz De Sousa
name: De Moraes, Camila
name: Menezes, Rafael Pombo
name: Santiago, Paulo Roberto Pereira
name: Puggina, Enrico Fuini
Publisher: name: Motricidade
Year: 2015

description: O objetivo do presente estudo foi aplicar e avaliar a eficácia de uma sistematização de ensino do futebol centrada no uso de jogos sobre o conhecimento tático processual de jovens jogadores. Participaram 16 voluntários alunos de uma escola de futebol vinculada a um clube de futebol profissional do interior do estado de São Paulo – Brasil. Para tal, os voluntários foram submetidos a 37 aulas organizadas em três diferentes módulos, com conteúdos específicos. A análise quanto à evolução do aprendizado dos participantes foi baseada no sistema de avaliação tática denominado FUT-SAT. Este instrumento considera a ação tática realizada, a localização da ocorrência, assim como seu resultado prático, gerando um Índice de Performance Tática (IPT) e um Número de Ações Táticas (NAT) para cada jogador analisado. Para avaliar e comparar o desenvolvimento do aprendizado tático dos participantes foram realizadas quatro avaliações, uma pré-intervenção (1ª), uma pós-intervenção (4ª) e duas intermediárias (2ª e 3ª). A 2ª e a 3ª avaliações foram realizadas após a última aula do Módulo 1 e 2 respectivamente. Ao comparar os valores médios dos IPTs ofensivos, defensivos e do jogo obtidos na 1ª avaliação, nomeada pré-intervenção, com os valores da 4ª avaliação, ou pós-intervenção, observou-se um aumento significante (p ≤ 0,05). Face ao exposto, a sistematização de ensino proposta neste estudo oportunizou um desenvolvimento significante na aprendizagem tática dos jogadores participantes.
description: Motricidade, Vol 11 No 2 (2015)