cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum quench in a driven Ising chain
Creators: name: Robinson, Neil J.
name: Castillo, Isaac Pérez
name: Guzmán-González, Edgar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the Ising chain driven by oscillatory transverse magnetic fields. For certain parameter regimes, we reveal a hidden integrable structure in the problem, which allows access to the \textit{exact time-evolution} in this driven quantum system. We compute time-evolved one- and two-point functions following a quench that activates the driving. It is shown that this model does not heat up to infinite temperature, despite the absence of energy conservation, and we further discuss the generalization to a family of driven Hamiltonians that do not suffer heating to infinite temperature, despite the absence of integrability and disorder. The particular model studied in detail also presents a route for realising exotic physics (such as the E8 perturbed conformal field theory) via driving in quantum chains that could otherwise never realise such behaviour. In particular we numerically confirm that the ratio of the meson excitations masses is given by the golden ratio.
Tubular Solutions in NS5-brane, Dp-brane and Macroscopic Strings Backgrounds
Creators: name: Huang, Wung-Hong
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present our searches for the tubular bound states of a D2-brane with $m$ D0-branes and $n$ fundamental strings in the NS5-brane, Dp-brane or macroscopic strings background by solving the Dirac-Born-Infeld equation. The geometry of tubular configurations we considered are taken to be parallel to the background branes or macroscopic strings. The $n$ fundamental strings therein may be the circular strings $F_c$ or the straight strings $F_s$, which are along the cross section or the axis of the tube respectively. We show that the stable tubular bound states of ($nF_s$, $m$D0, D2) which are prevented form collapse by the angular momentum, as original found in flat space, could be formed in the NS5-brane, D6-brane and macroscopic strings background. However, they becomes unstable in the D2-brane and D4-brane background. We also show that there are stable tubular bound states of ($nF_c$, $m$D0, D2) and ($m$D0, D2), which are prevented form collapse by the gravitational forces in the backgrounds of D6-brane. We discuss the properties of these tubular solutions and see that only that in the macroscopic strings background is a supersymmetric BPS configuration.
description: Latex 20 pages, correct physical interpretation
Recent Advances in Video Question Answering: A Review of Datasets and Methods
Creators: name: Patel, Devshree
name: Parikh, Ratnam
name: Shastri, Yesha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Video Question Answering (VQA) is a recent emerging challenging task in the field of Computer Vision. Several visual information retrieval techniques like Video Captioning/Description and Video-guided Machine Translation have preceded the task of VQA. VQA helps to retrieve temporal and spatial information from the video scenes and interpret it. In this survey, we review a number of methods and datasets for the task of VQA. To the best of our knowledge, no previous survey has been conducted for the VQA task.
description: 18 pages, 5 tables, Video and Image Question Answering Workshop, 25th International Conference on Pattern Recognition
The SAURON project - IV. The mass-to-light ratio, the virial mass estimator and the fundamental plane of elliptical and lenticular galaxies
Creators: name: Cappellari, M.
name: Bacon, R.
name: Bureau, M.
name: Damen, M. C.
name: Davies, R. L.
name: de Zeeuw, P. T.
name: Emsellem, E.
name: Falcon-Barroso, J.
name: Krajnovic, D.
name: Kuntschner, H.
name: McDermid, R. M.
name: Peletier, R. F.
name: Sarzi, M.
name: Bosch, R. C. E. van den
name: van de Ven, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate with unprecedented accuracy the correlations between the dynamical mass-to-light ratio M/L and other global observables of E and S0 galaxies. We construct two-integral Jeans and three-integral Schwarzschild dynamical models for a sample of 25 E/S0 galaxies with SAURON integral-field stellar kinematics. We find a tight correlation of the form (M/L)=(3.80+/-0.14)*(sigma/200 km/s)^(0.84+/-0.07) between the dynamical M/L (in the I-band) and the luminosity-weighted second moment (sigma) of the line-of-sight velocity-distribution within Re. The observed rms scatter in M/L for our sample is 18%, while the inferred intrinsic scatter is ~13%. The (M/L)-sigma relation can be included in the remarkable series of tight correlations between sigma and other galaxy global observables. The comparison of the observed correlations with the predictions of the Fundamental Plane (FP), and with simple virial estimates, shows that the `tilt' of the FP of early-type galaxies, is due to a real M/L variation, while structural and orbital non-homology have a negligible effect. The virial mass is a reliable estimator of the mass in the central regions of galaxies. The best-fitting virial relation has the form (M/L)_vir=(5.0+/-0.1)*Re*sigma^2/(L*G). The comparison of the dynamical M/L with the (M/L)_pop inferred from the analysis of the stellar population, indicates a median dark matter fraction in early-type galaxies of ~30% of the total mass inside one Re. (Abridged)
description: 25 pages, 19 figures, LaTeX. MNRAS in press
Klaus Fittschen e Johannes Bergemann (editori), Katalog der Skulpturen der Sammlung Wallmoden
Creators: name: Anguissola, Anna
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Klaus Fittschen e Johannes Bergemann (editori), Katalog der Skulpturen der Sammlung Wallmoden. Casa editrice Biering und Brinkmann, Monaco di Baviera 2015. 188 pagine con 45 figure, 130 tavole prevalentemente a colori, 14 tavole supplementari in bianco e nero
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
title: Dagstuhl Reports, Table of Contents, Volume 3, Issue 08, 2013
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2013
Subjects: subject: Table of Contents
subject: Frontmatter

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 3, Issue 8, pages i-ii
Elizabeth Bartman, The Ince Blundell Collection of Classical Sculpture Volume III. The Ideal Sculpture
Creators: name: Raeder, Joachim
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Elizabeth Bartman, The Ince Blundell Collection of Classical Sculpture Volume III. The Ideal Sculpture. Verlag Liverpool University Press, Liverpool 2017. 385 Seiten und 163 Tafeln.
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
HST/STIS Spectroscopy of Five Super Star Clusters in the Starburst Galaxy M82
Creators: name: Smith, L. J.
name: Westmoquette, M. S.
name: Gallagher, J. S.
name: O'Connell, R. W.
name: Rosario, D. J.
name: de Grijs, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical spectroscopy obtained with the Space Telescope Imaging Spectrograph (STIS) of five young massive star clusters in the starburst galaxy M82. A detailed analysis is performed for one cluster `M82-A1' and its immediate environment in the starburst core. From HST archive images, we find that it is elliptical with an effective radius of 3.0+/-0.5 pc and is surrounded by a compact (r=4.5+/-0.5 pc) H II region. We determine the age and reddening of M82-A1 using synthetic spectra from population synthesis models by fitting both the continuum energy distribution and the depth of the Balmer jump. We find an age of 6.4+/-0.5 Myr and a photometric mass estimate of M=7-13 x 10^5 solar masses. We associate its formation with the most recent starburst event 4-6 Myr ago. We find that the oxygen abundance of the H II region surrounding M82-A1 is solar or slightly higher. The H II region has a high pressure P/k = 1-2 x 10^7 cm^-3 K. The diffuse gas in region A has a slightly lower pressure, which together with the broad H alpha emission line width, suggests that both the thermal and turbulent pressures in the M82 starburst core are unusually high. We discuss how this environment has affected the evolution of the cluster wind for M82-A1. We find that the high pressure may have caused the pressure-driven bubble to stall. We also obtain spectroscopic ages for clusters B1-2 and B2-1 in the `fossil' starburst region and for the intermediate age clusters F and L. These are consistent with earlier studies and demonstrate that star formation activity, sufficiently intense to produce super star clusters, has been going on in M82 during the past Gyr, perhaps in discrete and localized episodes.
description: 17 pages, accepted for publication in MNRAS
Luigi Todisco, Prassitele di Atene. Scultore e bronzista del IV secolo
Creators: name: Maderna, Caterina
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Luigi Todisco, Prassitele di Atene. Scultore e bronzista del IV secolo. Verlag L’Erma di Bretschneider, Rom 2017. 148 Seiten, 26 Tafeln
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
Trinectes fimbriatus
Creators: name: Angulo, Arturo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Pleuronectiformes
Achiridae
Trinectes
Trinectes fimbriatus

description: 17) Trinectes fimbriatus (Günther, 1862);
Achiridae.
Fringed Sole, White Spotted Sole; Suela Manchada, Lenguado Redondo Manchado, Suela Pintada (Fig. 5A).
New record for the Coto River basin; previous records of the species in Costa Rican freshwaters were restricted to the Barranca River basin. Basis of the record: A single specimen was captured in the Quebrada Cocal Amarillo, 5 km N of Pavones, on the Puerto Pilón-Pavones road, Puntarenas (8.43643, -83.0966), at 26 m. a.s.l., on March 30, 2021, by Arturo Angulo, Jorge San Gil, Alejandro Oviedo and Juan Ignacio Abarca.
description: Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 16, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630
Heuristic assessment of the economic effects of pandemic control
Creators: name: Niu, Xiang
name: Brissette, Christopher
name: Jiang, Chunheng
name: Gao, Jianxi
name: Korniss, Gyorgy
name: Szymanski, Boleslaw K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Data-driven risk networks describe many complex system dynamics arising in fields such as epidemiology and ecology. They lack explicit dynamics and have multiple sources of cost, both of which are beyond the current scope of traditional control theory. We construct the global risk network by combining the consensus of experts from the World Economic Forum with risk activation data to define its topology and interactions. Many of these risks, including extreme weather, pose significant economic costs when active. We introduce a method for converting network interaction data into continuous dynamics to which we apply optimal control. We contribute the first method for constructing and controlling risk network dynamics based on empirically collected data. We identify seven risks commonly used by governments to control COVID-19 spread and show that many alternative driver risk sets exist with potentially lower cost of control.
description: 15 pages, 3 figures
AV-differential geometry and Newtonian mechanics
Creators: name: Grabowska, Katarzyna
name: Urbanski, Pawel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70G45; 70 H03; 70H05

description: A frame independent formulation of analytical mechanics in the Newtonian space-time is presented The differential geometry of affine values i.e., the differential geometry in which affine bundles replace vector bundles and sections of one dimensional affine bundles replace functions on manifolds, is uded. Lagragian and hamiltonian generating objects, together with the Legendre transformation independent on inertial frame are constructed.
description: Revised and corrected, one subsection added. 16 pages, accepted in ROMP
$q$-Deformation of Corner Vertex Operator Algebras by Miura Transformation
Creators: name: Harada, Koichi
name: Matsuo, Yutaka
name: Noshita, Go
name: Watanabe, Akimi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Recently, Gaiotto and Rapcak proposed a generalization of $W_N$ algebra by considering the symmetry at the corner of the brane intersection (corner vertex operator algebra). The algebra, denoted as $Y_{L,M,N}$, is characterized by three non-negative integers $L, M, N$. It has a manifest triality automorphism which interchanges $L, M, N$, and can be obtained as a reduction of $W_{1+\infty}$ through a "pit" in the plane partition representation. Later, Prochazka and Rapcak proposed a representation of $Y_{L,M,N}$ in terms of $L+M+N$ free bosons through a generalization of Miura transformation, where they use the fractional power differential operators. In this paper, we derive a $q$-deformation of their Miura transformation. It gives the free field representation for $q$-deformed $Y_{L,M,N}$, which is obtained as a reduction of the quantum toroidal algebra. We find that the $q$-deformed version has a "simpler" structure than the original one because of the Miki duality in the quantum toroidal algebra. For instance, one can find a direct correspondence between the operators obtained by the Miura transformation and those of the quantum toroidal algebra. Furthermore, we can show that the screening charges of both the symmetries are identical.
description: 53 pages; typos corrected, references added
Thomas X. Schuhmacher mit Beiträgen von Arun Banerjee, Willi Dindorf (†), Frieder Enzmann, Abdeslam Mikdad, Thomas Reischmann, Chaturvedula Sastri, Thierry Sauvage und Jens-Oliver Schwarz, Elfenbeinstudien. Faszikel III. Elefanten und Elfenbein auf der Ib
Creators: name: Brandherm, Dirk
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Thomas X. Schuhmacher mit Beiträgen von Arun Banerjee, Willi Dindorf (†), Frieder Enzmann, Abdeslam Mikdad, Thomas Reischmann, Chaturvedula Sastri, Thierry Sauvage und Jens-Oliver Schwarz, Elfenbeinstudien. Faszikel III. Elefanten und Elfenbein auf der Iberischen Halbinsel und in Nordwestafrika. Interdisziplinäre Studien zu Austauschsystemen im 3. und der ersten Hälfte des 2. Jts. v. Chr. Iberia Archaeologica, Band 16, Faszikel 3. Ernst Wasmuth Verlag, Tübingen 2016. Mit 276 Seiten und 58 Abbildungen im Text sowie 6 Tafeln.
description: Bonner Jahrbücher, Bd. 218.2018(2019): Bonner Jahrbücher
An exploration of meaning in the lives of elderly women
Creators: name: Swanson, Elizabeth Jane
Publisher: name: University of British Columbia
Year: 2009

description: This qualitative study explores the phenomenon of meaning in the lives of community dwelling elderly women. Having a sense of meaning in one's life is important as it contributes to well-being, health and successful aging. These elderly women also demonstrated that aging is a time of continued growth and development. In this study, six elderly women were interviewed to allow them to describe what is meaningful in their lives. The interview centered around one question, "Is there something or things so important to you in your life that they give your life meaning?" The interviews were transcribed and subjected to the phenomenological method of analysis as developed by Colaizzi (1978). The final procedural step of data analysis involved integrating the results into an exhaustive description of the phenomenon of meaning. From this study, five themes emerged which captured the areas of meaning in the lives of these elderly women. Meaning was defined and redefined throughout their lives through the interconnectedness of relationships, outlook, interests, independence and health. Discussion of the findings included reviewing the similarities and differences in how young-old women (ages 65-79) and old-old women (over the age of 80) described meaning in their lives. The five themes that emerged from the data were common to both cohorts. Implications for social work and considerations for future research are discussed.
Gapless quantum spin liquid in the triangular system Sr$_{3}$CuSb$_{2}$O$_{9}$
Creators: name: Kundu, S.
name: Shahee, Aga
name: Chakraborty, Atasi
name: Ranjith, K. M.
name: Koo, B.
name: Sichelschmidt, Jörg
name: Telling, Mark T. F.
name: Biswas, P. K.
name: Baenitz, M.
name: Dasgupta, I.
name: Pujari, Sumiran
name: Mahajan, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report gapless quantum spin liquid behavior in the layered triangular Sr$_{3}$CuSb$_{2}$O$_{9}$ (SCSO) system. X-ray diffraction shows superlattice reflections associated with atomic site ordering into triangular Cu planes well-separated by Sb planes. Muon spin relaxation ($μ$SR) measurements show that the $S = \frac{1}{2}$ moments at the magnetically active Cu sites remain dynamic down to 65 mK in spite of a large antiferromagnetic exchange scale evidenced by a large Curie-Weiss temperature $θ_{\mathrm{cw}} \simeq $ -143 K as extracted from the bulk susceptibility. Specific heat measurements also show no sign of long-range order down to 0.35 K. The magnetic specific heat ($\mathit{C}$$_{\mathrm{m}}$) below 5 K reveals a $\mathit{C}$$_{\mathrm{m}}$ $=$ $γT$ + $αT$$^{2}$ behavior. The significant $T$$^{2}$ contribution to the magnetic specific heat invites a phenomenology in terms of the so-called Dirac spinon excitations with a linear dispersion. From the low-$T$ specific heat data, we estimate the dominant exchange scale to be $\sim $ 36 K using a Dirac spin liquid ansatz which is not far from the values inferred from microscopic density functional theory calculations ($\sim $ 45 K) as well as high-temperature susceptibility analysis ($\sim$ 70 K). The linear specific heat coefficient is about 18 mJ/mol-K$^2$ which is somewhat larger than for typical Fermi liquids.
description: 16 pages, 21 figures, including supplementary material. A $S = \frac{1}{2}$ Dirac spin liquid scenario has been put forward to explain the field-dependent specific heat data. Comments are welcome
title: Dagstuhl Reports, Table of Contents, Volume 3, Issue 09, 2013
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Table of Contents
subject: Frontmatter

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 3, Issue 9, pages i-ii
Vieja maculicauda
Creators: name: Angulo, Arturo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Cichlidae
Vieja
Vieja maculicauda

description: 18) Vieja maculicauda (Regan, 1905);
Cichlidae.
Blackbelt Cichlid; Vieja, Mojarra, Pis Pis, Mojarra de Estero, Palometa, Mojarra Azul, Tilapia (Fig. 5B).
New record for the Rio Frío and San Juan River basins; previous records of the species in Costa Rican freshwaters were restricted to the Tortuguero, Parismina, Matina and Sixaola River basins. New elevational record (40 m. a.s.l.); previous records of the species in Costa Rican freshwaters were restricted to 0– 5 m.a.s.l. Basis of the record: One specimen was captured in the Laguna Charco Verde, on the Humedal Caño Negro, Los Chiles, Alajuela (10.89350, -84.77277), at 40 m. a.s.l., on June 20, 2021, by Fausto Árias and Alexandre Tisseaux; a second specimen was captured the río San Juan, at Las Chorreras, Cutris de San Carlos, Alajuela, (10.91566, -84.30626), at 30 m. a.s.l., on June 24, 2021, by Freylan Mena.
description: Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 16, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630
Determining the true mass of radial-velocity exoplanets with Gaia: 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets
Creators: name: Kiefer, Flavien
name: Hébrard, Guillaume
name: Lecavelier, Alain
name: Martioli, Eder
name: Dalal, Shweta
name: Vidal-Madjar, Alfred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Mass is one of the most important parameters for determining the true nature of an astronomical object. Yet, many published exoplanets lack a measurement of their true mass, in particular those detected thanks to radial velocity (RV) variations of their host star. For those, only the minimum mass, or $m\sin i$, is known, owing to the insensitivity of RVs to the inclination of the detected orbit compared to the plane-of-the-sky. The mass that is given in database is generally that of an assumed edge-on system ($\sim$90$^\circ$), but many other inclinations are possible, even extreme values closer to 0$^\circ$ (face-on). In such case, the mass of the published object could be strongly underestimated by up to two orders of magnitude. In the present study, we use GASTON, a tool recently developed in Kiefer et al. (2019) & Kiefer (2019) to take advantage of the voluminous Gaia astrometric database, in order to constrain the inclination and true mass of several hundreds of published exoplanet candidates. We find 9 exoplanet candidates in the stellar or brown dwarf (BD) domain, among which 6 were never characterized. We show that 30 Ari B b, HD 141937 b, HD 148427 b, HD 6718 b, HIP 65891 b, and HD 16760 b have masses larger than 13.5 M$_\text{J}$ at 3-$σ$. We also confirm the planetary nature of 27 exoplanets among which HD 10180 c, d and g. Studying the orbital periods, eccentricities and host-star metallicities in the BD domain, we found distributions with respect to true masses consistent with other publications. The distribution of orbital periods shows of a void of BD detections below $\sim$100 days, while eccentricity and metallicity distributions agree with a transition between BDs similar to planets and BDs similar to stars about 40-50 M$_\text{J}$.
description: 32 pages, 23 figures, 10 tables, accepted for publication in Astronomy & Astrophysics
Subsystem stabilizer codes cannot have a universal set of transversal gates for even one encoded qudit
Creators: name: Chen, Xie
name: Chung, Hyeyoun
name: Cross, Andrew W.
name: Zeng, Bei
name: Chuang, Isaac L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A long-standing open problem in fault-tolerant quantum computation has been to find a universal set of transversal gates. As three of us proved in arXiv: 0706.1382, such a set does not exist for binary stabilizer codes. Here we generalize our work to show that for subsystem stabilizer codes in $d$ dimensional Hilbert space, such a universal set of transversal gates cannot exist for even one encoded qudit, for any dimension $d$, prime or nonprime. This result strongly supports the idea that other primitives, such as quantum teleportation, are necessary for universal fault-tolerant quantum computation, and may be an important factor for fault tolerance noise thresholds.
description: 16 pages, 3 figures
Robustness of Discrete Flows and Caustics in Cold Dark Matter Cosmology
Creators: name: Natarajan, Aravind
name: Sikivie, Pierre
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Although a simple argument implies that the distribution of dark matter in galactic halos is characterized by discrete flows and caustics, their presence is often ignored in discussions of galactic dynamics and of dark matter detection strategies. Discrete flows and caustics can in fact be irrelevant if the number of flows is very large. We estimate the number of dark matter flows as a function of galactocentric distance and consider the various ways in which that number can be increased, in particular by the presence of structure on small scales (dark matter clumps) and the scattering of the flows by inhomogeneities in the matter distribution. We find that, when all complicating factors are taken into account, discrete flows and caustics in galactic halos remain a robust prediction of cold dark matter cosmology with extensive implications for observation and experiment.
description: 13 pages, no figures
Black hole quasinormal modes and isospectrality in Deser-Woodard nonlocal gravity
Creators: name: Chen, Che-Yu
name: Park, Sohyun
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the gravitational perturbations of the Schwarzschild black hole in the nonlocal gravity model recently proposed by Deser and Woodard (DW-II). The analysis is performed in the localized version in which the nonlocal corrections are represented by some auxiliary scalar fields. We find that the nonlocal corrections do not affect the axial gravitational perturbations, and hence the axial modes are completely identical to those in General Relativity (GR). However, the polar modes get different from their GR counterparts when the scalar fields are excited at the background level. In such a case the polar modes are sourced by an additional massless scalar mode and, as a result, the isospectrality between the axial and the polar modes breaks down. We also perform a similar analysis for the predecessor of this model (DW-I) and arrive at the same conclusion for it.
description: 10 pages
Auf dem Weg zu einer Neubestimmung des Profils der Laien in der ökumenischen Bewegung
Creators: name: Raiser, Konrad
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 2 (1994): Ökumenische Rundschau, Band 43, Heft 2
title: Dagstuhl Reports, Table of Contents, Volume 3, Issue 10, 2013
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Table of Contents
subject: Frontmatter

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 3, Issue 10, pages i-ii
Factorizations of permutations into star transpositions
Creators: name: Irving, John
name: Rattan, Amarpreet
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15, O5E15

description: We give a compact expression for the number of factorizations of any permutation into a minimal number of transpositions of the form $(1 i)$. Our result generalizes earlier work of Pak in which substantial restrictions were placed on the permutation being factored.
description: 9 pages, 1 figure
Open SSL API Mini-Tutorial
Creators: name: R. Veraldi
Publisher: name: INFN Open Access Repository
Year: 2002

description: Dopo una breve descrizione del protocollo SSL vengono presentate le principali API in C della libreria OpenSSL, toolkit Open Source che implementa SSL v2/v3 e TLS v1. Viene anche analizzato un esempio di semplice applicazione client/server da cui potere iniziare per sviluppare proprie applicazioni SSL.
Impact of cosmological signatures in two-point statistics beyond the linear regime
Creators: name: Gomez-Navarro, Dante V.
name: Mead, Alexander
name: Aviles, Alejandro
name: de la Macorra, Axel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Some beyond $Λ$CDM cosmological models have dark-sector energy densities that suffer phase transitions. Fluctuations entering the horizon during such a transition can receive enhancements that ultimately show up as a distinctive bump in the power spectrum relative to a model with no phase transition. In this work, we study the non-linear evolution of such signatures in the matter power spectrum and correlation function using N-body simulations, perturbation theory and HMcode - a halo-model based method. We focus on modelling the response, computed as the ratio of statistics between a model containing a bump and one without it, rather than in the statistics themselves. Instead of working with a specific theoretical model, we inject a parametric family of Gaussian bumps into otherwise standard $Λ$CDM spectra. We find that even when the primordial bump is located at linear scales, non-linearities tend to produce a second bump at smaller scales. This effect is understood within the halo model due to a more efficient halo formation. In redshift space these nonlinear signatures are partially erased because of the damping along the line-of-sight direction produced by non-coherent motions of particles at small scales. In configuration space, the bump modulates the correlation function reflecting as oscillations in the response, as it is clear in linear Eulerian theory; however, they become damped because large scale coherent flows have some tendency to occupy regions more depleted of particles. This mechanism is explained within Lagrangian Perturbation Theory and well captured by our simulations.
description: 15 pages, 8 figures
Millisecond-range electron spin memory in singly-charged InP quantum dots
Creators: name: Pal, Bipul
name: Ikezawa, Michio
name: Masumoto, Yasuaki
name: Ignatiev, Ivan V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report millisecond-range spin memory of resident electrons in an ensemble of InP quantum dots (QDs) under a small magnetic field of 0.1 T applied along the optical excitation axis at temperatures up to about 5 K. A pump-probe photoluminescence (PL) technique is used for optical orientation of electron spins by the pump pulses and for study of spin relaxation over the long time scale by measuring the degree of circular polarization of the probe PL as a function of pump-probe delay. Dependence of spin decay rate on magnetic field and temperature suggests two-phonon processes as the dominant spin relaxation mechanism in this QDs at low temperatures.
description: 3 pages, 4 figures, submitted to Appl. Phys. Lett
Carol L. Lawton, Votive Reliefs
Creators: name: Meyer, Marion
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Carol L. Lawton, Votive Reliefs. The Athenian Agora XXXVIII. Selbstverlag American School of Classical Studies at Athens, Princeton 2017. 248 Seiten mit 12 Farbbildern, 3 Plänen und 60 Tafeln
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
title: Dagstuhl Reports, Table of Contents, Volume 3, Issue 11, 2013
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Table of Contents
subject: Frontmatter

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 3, Issue 11, pages i-ii
Catherine M. Keesling, Early Greek Portraiture. Monuments and Histories
Creators: name: Dietrich, Nikolaus
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Catherine M. Keesling, Early Greek Portraiture. Monuments and Histories. Cambridge University Press 2017. XVIII und 310 Seiten mit 65 Schwarzweißabbildungen
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
Maja Miše, Gnathia and Related Hellenistic Ware on the East Adriatic Coast
Creators: name: Roth, Roman
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Maja Miše, Gnathia and Related Hellenistic Ware on the East Adriatic Coast. Verlag Archaeopress, Oxford 2015. VI und 168 Seiten mit 187 Abbildungen
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
A 2.1 Solar Mass Pulsar Measured by Relativistic Orbital Decay
Creators: name: Nice, David J.
name: Splaver, Eric M.
name: Stairs, Ingrid H.
name: Loehmer, Oliver
name: Jessner, Axel
name: Kramer, Michael
name: Cordes, James M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: PSR J0751+1807 is a millisecond pulsar in a circular 6 hr binary system with a helium white dwarf secondary. Through high precision pulse timing measurements with the Arecibo and Effelsberg radio telescopes, we have detected the decay of its orbit due to emission of gravitational radiation. This is the first detection of the relativistic orbital decay of a low-mass, circular binary pulsar system. The measured rate of change in orbital period, corrected for acceleration biases, is dP_b/dt=(-6.4+-0.9)x10^-14. Interpreted in the context of general relativity, and combined with measurement of Shapiro delay, it implies a pulsar mass of 2.1+-0.2 solar masses, the most massive pulsar measured. This adds to the emerging trend toward relatively high neutron star masses in neutron star--white dwarf binaries. Additionally, there is some evidence for an inverse correlation between pulsar mass and orbital period in these systems. We consider alternatives to the general relativistic analysis of the data, and we use the pulsar timing data to place limits on violations of the strong equivalence principle.
description: 9 pages, Submitted to ApJ
Robert Sturm, Amazonen in der antiken Vasenmalerei. Die Bedeutung des Bildmotivs der kriegerischen Frau in der alten Töpferkunst
Creators: name: Moraw, Susanne
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Robert Sturm, Amazonen in der antiken Vasenmalerei. Die Bedeutung des Bildmotivs der kriegerischen Frau in der alten Töpferkunst. Studien zur Geschichtsforschung des Altertums, Band 33. Verlag Dr. Kovač, Hamburg 2017. 180 Seiten mit 22 Abbildungen und 50 Tafeln
description: Bonner Jahrbücher, Bd. 217.2017(2018): Bonner Jahrbücher
Time-Resolved XUV absorption spectroscopy and magnetic circular dichroism at the Ni $M_{2,3}$-edges
Creators: name: Hennes, Marcel
name: Rösner, Benedikt
name: Chardonnet, Valentin
name: Chiuzbaian, Gheorghe S.
name: Delaunay, Renaud
name: Döring, Florian
name: Guzenko, Vitaliy A.
name: Hehn, Michel
name: Jarrier, Romain
name: Kleibert, Armin
name: Lebugle, Maxime
name: Lüning, Jan
name: Merhe, Aladine
name: Naumenko, Denys
name: Nikolov, Ivaylo P.
name: Lopez-Quintas, Ignacio
name: Pedersoli, Emanuele
name: Savchenko, Tatiana
name: Watts, Benjamin
name: Zangrando, Marco
name: David, Christian
name: Capotondi, Flavio
name: Vodungbo, Boris
name: Jal, Emmanuelle
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ultrashort optical pulses can trigger a variety of non-equilibrium processes in magnetic thin films affecting electrons and spins on femtosecond timescales. In order to probe the charge and magnetic degrees of freedom simultaneously, we developed an x-ray streaking technique that has the advantage of providing a jitter-free picture of absorption cross section changes. In this paper, we present an experiment based on this approach which we performed using five photon probing energies at the Ni $M_{2,3}$-edges. This allowed us to retrieve the absorption and magnetic circular dichroism time traces, yielding detailed information on transient modifications of electron and spin populations close to the Fermi level. Our findings suggest that the observed charge and magnetic dynamics both depend on the XUV probing wavelength, and can be described, at least qualitatively, by assuming ultrafast energy shifts of the electronic and magnetic elemental absorption resonances, as reported in recent work. However, our analysis also hints at more complex changes, highlighting the need for further experimental and theoretical analysis in order to gain a thorough understanding of the interplay of electronic and spin degrees of freedom in optically excited magnetic thin films.
Siemon-Netto, Uwe, Luther als Wegbereiter Hitlers?
Creators: name: Heidingsfeld, Uwe-Peter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 1 (1994): Ökumenische Rundschau, Band 43, Heft 1
Neutral scalar Higgs bosons in the USSM at the LHC
Creators: name: Ham, S. W.
name: Hur, Taeil
name: Ko, P.
name: OH, S. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the possibility of discovering neutral scalar Higgs bosons in the $U(1)'$-extended supersymmetric standard model (USSM) at the CERN Large Hadron Collider (LHC), by examining their productions via the exotic quark loop in the gluon fusion process at leading order. It is possible in some parameter region that the neutral scalar Higgs bosons may have stronger couplings with the exotic quarks than with top quark. In this case, the exotic quarks may contribute more significantly than top quark in productions of the neutral scalar Higgs bosons in the gluon fusion process. We find that there is indeed some parameter region in the USSM that supports our speculations.
description: 18 pages; changed content; JPhysG
Antioxidant properties of propofol in coronary artery bypass surgery
Creators: name: Sun, Jianhang
Publisher: name: University of British Columbia
Year: 2009

description: Ischaemia reperfusion injury (IRI) is considered one of the major causes of cardiopulmonary dysfunction in cardiopulmonary bypass (CPB) surgery. Reactive oxygen intermediates have been linked to IRI. Measures to increase antioxidant capacity, with vitamin C, vitamin E, and allopurinol, have markedly reduced tissue lipid peroxidation and resulted in improved cardiopulmonary function. An intravenous anaesthetic, propofol has been found to have antioxidant properties in cell culture and in animal studies. The antioxidant potential of propofol during CPB surgery has not been reported. Following institutional approval and informed patient consent, 26 patients scheduled for CPB surgery were enrolled. Patients were anaesthetized with sufentanil-isoflurane (control, n=11) , sufentanil-low dose propofol (1.5- 2.5 mg/kg bolus then 100 μg/kg/min preCPB , 50 ug/kg/min intra-CPB; n=7), or high dose propofol (1.5-2.5 mg/kg then 200 μg/kg/min continous infusion; n=8). Venous blood was sampled for determination of red cell antioxidant capacity as MDA (malondialdehyde) production against in vitro oxidative challenge and plasma concentration of propofol. Clinical parameters of interest included perioperative inotropic requirement, haemodynamic changes, and lung oxygenation. Red cell antioxidant capacity increased significantly only with high dose propofol. This effect continued 2 hours after separation from bypass. High dose and low dose propofol were associated with significantly less inotropic (dopamine 3-5 μg/kg/min) requirement. Low dose propofol significantly increased the percentage of patients with normal cardiac index postoperatively. Improvement of cardiac function did not parallel the reduction of lipid peroxidation. Propofol's effects were limited to lipid membranes. The cardiodepresant effect of high dose propofol was manifested as relatively low cardiac index within the first three hours after operation. Lung oxygenation was superior with low dose propofol and isoflurane after 6 to 12 hours after operation, comparing to that within one hour after operation (P<0.05).
title: Dagstuhl Reports, Table of Contents, Volume 3, Issue 12, 2013
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Table of Contents
subject: Frontmatter

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 3, Issue 12, pages i-ii
Structures of bulk hexagonal post-transition-metal chalcogenides from dispersion-corrected density-functional theory
Creators: name: Magorrian, S. J.
name: Zolyomi, V.
name: Drummond, N. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use dispersion-corrected density-functional theory to determine the relative energies of competing polytypes of bulk layered hexagonal post-transition-metal chalcogenides, to search for the most stable structures of these potentially technologically important semiconductors. We show that there is some degree of consensus among dispersion-corrected exchange-correlation functionals regarding the energetic orderings of polytypes, but we find that for each material there are multiple stacking orders with relative energies of less than 1 meV per monolayer unit cell, implying that stacking faults are expected to be abundant in all post-transition-metal chalcogenides. By fitting a simple model to all our energy data, we predict that the most stable hexagonal structure has P$6_3$/mmc space group in each case, but that the stacking order differs between GaS, GaSe, GaTe, and InS on the one hand and InSe and InTe on the other. At zero pressure, the relative energies obtained with different functionals disagree by around 1-5 meV per monolayer unit cell, which is not sufficient to identify the most stable structure unambiguously; however, multi-GPa pressures reduce the number of competing phases significantly. At higher pressures, an AB$'$-stacked structure of the most stable monolayer polytype is found to be the most stable bulk structure; this structure has not been reported in experiments thus far.
Apresentação PIBIC - Educação Financeira | Danilo Araujo - UnB
Creators: name: Danilo de Sousa Araujo
Publisher: name: Zenodo
Year: 2022
Subjects: Educação Financeira
Alfabetização financeira
Atitude financeira
Comportamento financeiro
Estudo bibliométrico

description: Apresentação do artigo "Educação Financeira: Uma Análise Bibliométrica com enfoque nos construtos Atitude e Comportamento Financeiros" vinculado ao Programa de Iniciação Científica da Universidade de Brasília (ProIC-UnB).

Vídeo no YouTube: https://youtu.be/Bx_ZSK2wDQw

Autor: Danilo de Sousa Araujo
Orientadora: Profª Drª Ducineli Régis Botelho
Battery-assisted Electric Vehicle Charging: Data Driven Performance Analysis
Creators: name: Ali, Junade
name: Dyo, Vladimir
name: Zhang, Sijing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: As the number of electric vehicles rapidly increases, their peak demand on the grid becomes one of the major challenges. A battery-assisted charging concept has emerged recently, which allows to accumulate energy during off-peak hours and in-between charging sessions to boost-charge the vehicle at a higher rate than available from the grid. While prior research focused on the design and implementation aspects of battery-assisted charging, its impact at large geographical scales remains largely unexplored. In this paper we analyse to which extent the battery-assisted charging can replace high-speed chargers using a dataset of over 3 million EV charging sessions in both domestic and public setting in the UK. We first develop a discrete-event EV charge model that takes into account battery capacity, grid supply capacity and power output among other parameters. We then run simulations to evaluate the battery-assisted charging performance in terms of delivered energy, charging time and parity with conventional high-speed chargers. The results indicate that in domestic settings battery-assisted charging provides 98% performance parity of high-speed chargers from a standard 3 kW grid connection with a single battery pack. For non-domestic settings, the battery-assisted chargers can provide 92% and 99% performance parity of high-speed chargers with 10 battery packs using 3kW and 7kW grid supply respectively.
description: Paper presented at 2020 IEEE PES ISGT Conference (26-28 October 2020)
Proprioceptive drift in the rubber hand illusion is intensified following 1 Hz TMS of the left EBA
Creators: name: Wold, Andrew
name: Limanowski, Jakub
name: Walter, Henrik
name: Blankenburg, Felix
Publisher: name: Freie Universität Berlin
Year: 2014
Subjects: subject: rubber hand illusion
subject: transcranial magnetic stimulation
subject: extrastriate body area
subject: body representation
subject: proprioceptive drift
subject: 100 Philosophie und Psychologie::150 Psychologie

description: The rubber hand illusion (RHI) is a paradigm used to induce an illusory feeling of owning a dummy hand through congruent multisensory stimulation. Thus, it can grant insights into how our brain represents our body as our own. Recent research has demonstrated an involvement of the extrastriate body area (EBA), an area of the brain that is typically implicated in the perception of non-face body parts, in illusory body ownership. In this experiment, we sought causal evidence for the involvement of the EBA in the RHI. Sixteen participants took part in a sham controlled, 1 Hz repetitive transcranial magnetic stimulation (rTMS) experiment. Participants received (RHI condition) or asynchronous (control) stroking and were asked to report the perceived location of their real hand, as well as the intensity and the temporal onset of experienced ownership of the dummy hand. Following rTMS of the left EBA, participants misjudged their real hand’s location significantly more toward the dummy hand during the RHI than after sham stimulation. This difference in “proprioceptive drift” provides the first causal evidence that the EBA is involved in the RHI and subsequently in body representation and further supports the view that the EBA is necessary for multimodal integration.
Innovonto: An Enhanced Crowd Ideation Platform with Semantic Annotation (Hallway Test)
Creators: name: Khiat, Abderrahmane
name: Mackeprang, Maximilian
name: Müller-Birn, Claudia
Publisher: name: Freie Universität Berlin
Year: 2018
Subjects: subject: Collaborative Ideation
subject: Semantic Annotation
subject: Ontology Matching
subject: Brainstorming
subject: Crowd Ideation
subject: Creativity
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke

description: Crowd ideation platforms provide a promising approach for supporting the idea generation process. Research has shown that presenting a set of similar or diverse ideas to users during ideation leads them to come-up with more creative ideas. In this paper, we describe Innovonto, a crowd ideation platform that leverages semantic web technologies and human collaboration to identify similar and diverse ideas in order to enhance the creativity of generated ideas. Therefore, the approach implemented captures first the conceptualization of users' ideas. Then, a matching system is employed to compute similarities between all ideas in near real time. Furthermore, this technical report outlines the results obtained from the evaluation of Innovonto platform. The hallway study, conducted at our research group, allowed us to test each step of Innovonto platform as well as the proposed approach in assessing similarities between ideas. As results, we received 20 ideas and 23 feedbacks from 9 users. The analysis of the results shows good performance of Innovonto steps and confirms the findings of existing research.