cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The homotopy type of spaces of locally convex curves in the sphere
Creators: name: Saldanha, Nicolau C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 57N65, 53C42, Secondary 34B05

description: A smooth curve $γ: [0,1] \to \Ss^2$ is locally convex if its geodesic curvature is positive at every point. J. A. Little showed that the space of all locally convex curves $γ$ with $γ(0) = γ(1) = e_1$ and $γ'(0) = γ'(1) = e_2$ has three connected components $L_{-1,c}$, $L_{+1}$, $L_{-1,n}$. The space $\cL_{-1,c}$ is known to be contractible. We prove that $\cL_{+1}$ and $\cL_{-1,n}$ are homotopy equivalent to $(Ω\Ss^3) \vee \Ss^2 \vee \Ss^6 \vee \Ss^{10} \vee \cdots$ and $(Ω\Ss^3) \vee \Ss^4 \vee \Ss^8 \vee \Ss^{12} \vee \cdots$, respectively. As a corollary, we deduce the homotopy type of the components of the space $\Free(\Ss^1,\Ss^2)$ of free curves $γ: \Ss^1 \to \Ss^2$ (i.e., curves with nonzero geodesic curvature). We also determine the homotopy type of the spaces $\Free([0,1], \Ss^2)$ with fixed initial and final frames.
description: 47 pages, 13 figures
High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
Creators: name: Huebl, Hans
name: Zollitsch, Christoph
name: Lotze, Johannes
name: Hocke, Fredrik
name: Greifenstein, Moritz
name: Marx, Achim
name: Gross, Rudolf
name: Goennenwein, Sebastian T. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the observation of strong coupling between the exchange-coupled spins in gallium-doped yttrium iron garnet and a superconducting coplanar microwave resonator made from Nb. The measured coupling rate of 450 MHz is proportional to the square-root of the number of exchange-coupled spins and well exceeds the loss rate of 50 MHz of the spin system. This demonstrates that exchange coupled systems are suitable for cavity quantum electrodynamics experiments, while allowing high integration densities due to their extraordinary high spin densities. Our results furthermore show, that experiments with multiple exchange-coupled spin systems interacting via a single resonator are within reach.
description: 5 pages, 3 figures
Chiral superfluid states in hybrid graphene heterostructures
Creators: name: Zhang, Junhua
name: Rossi, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The use of high quality hexagonal boron nitride (hBN) as a dielectric material has made possible the realization of graphene devices with very high mobility. In addition hBN can be made as thin as few atomic layers and, as recently demonstrated experimentally, can be used to isolate electrically two graphene layers only few nanometers apart. The combined use of graphene and hBN has therefore opened the possibility to create novel electronic structures. In this work we study the "hybrid" heterostructure formed by one sheet of single layer graphene (SLG) and one sheet of bilayer graphene (BLG) separated by a thin film of hBN. In general it is expected that interlayer interactions can drive the system to a spontaneously broken symmetry state characterized by interlayer phase coherence. The peculiarity of the SLG-BLG heterostructure is that the electrons in the layers (SLG and BLG) have different chiralities. We find that the difference of chirality between electrons in the two layers causes the spontaneously broken symmetry state to be N-fold degenerate. Moreover, we find that some of the degenerate states are chiral superfluid states, topologically distinct from the usual layer-ferromagnetism. The chiral nature of the ground state opens the possibility to realize protected midgap states. The N-fold degeneracy of the ground state makes the physics of SLG-BLG hybrid systems analogous to the physics of helium-3, in particular given the recent discovery of chiral superfluid states in this system.
description: 5 pages, 4 figures
Steinkistengräber der älteren Bronzezeit auf dem Säringsberge bei Helmsdorf im Mansfelder Seekreise
Creators: name: Größler, Hermann
Publisher: name: Jahresschrift für mitteldeutsche Vorgeschichte
Year: 2019

description: Jahresschrift für mitteldeutsche Vorgeschichte, Bd. 8 (1909): Jahresschrift für die Vorgeschichte der sächsisch-thüringischen Länder
'Górne Łużyce – wędrówka przez dzieje sztuki i religii wieloetnicznej i wielowyznaniowej krainy w sercu Europy od czasów reformacji do dziś'
Creators: name: Ginter, Anna
Publisher: name: Quart
Year: 2019

description: Includes a summary in English
description: Quart, Bd. 17 Nr. 3 (2010): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
Homology of origamis with symmetries
Creators: name: Matheus, Carlos
name: Yoccoz, Jean-Christophe
name: Zmiaikou, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37D40 (Primary) 30F10, 30F60, 32G15, 20C05 (Secondary)

description: Given an origami (square-tiled surface) M with automorphism group G, we compute the decomposition of the first homology group of M into isotypic G-submodules. Through the action of the affine group of M on the homology group, we deduce some consequences for the multiplicities of the Lyapunov exponents of the Kontsevich-Zorich cocycle. We also construct and study several families of interesting origamis illustrating our results.
description: 36 pages, no figures. Final version incorporating the referee's comments. To appear in Annales de l'Institut Fourier, Volume 64 (2014)
title: Curvature of higher direct image sheaves on the moduli space of stable vector bundles
title: Krümmung von höheren direkten Bildgarben auf dem Modulraum der stabilen Vektorbündel
Creators: name: Geiger, Thomas Wolfgang
Publisher: name: Philipps-Universität Marburg
Year: 2013
Subjects: Hermite-Einstein bundles
Mathematik
Weil-Petersson metric
Modulräume , Stabile Vektorbündel
Hermite-Einstein-Vektorbündel , Weil-Petersson-Metrik
Moduli spaces , Stable bundles
Krümmung von direkten Bildgarben
Curvature of direct image sheaves

description: The higher direct image sheaves of
      families of Hermite-Einstein vector bundles on compact Kähler
      manifolds are investigated. On the complement of a proper
      analytic subset of the base these sheaves induce holomorphic
      vector bundles which carry a natural hermitian metric. These
      metrics are generalizations of the Weil-Petersson metric on
      the base and fiberwise they are induced by the L2 inner
      products of harmonic forms. The curvatures of these metrics
      are computed and connections to moduli spaces of stable
      bundles are discussed. The main tool is the Hodge theory in
      holomorphic vector bundles over compact Kähler
      manifolds.
description: Die höheren direkten Bildgarben von
      Familien von Hermite-Einstein-Vektorbündeln auf kompakten
      Kählermannigfaltigkeiten werden untersucht. Außerhalb einer
      echten analytischen Teilmenge der Basis induzieren diese
      Garben holomorphe Vektorbündel, die eine natürliche
      hermitesche Metrik tragen. Diese Metriken sind
      Verallgemeinerungen der Weil-Petersson-Metrik der Basis und
      werden faserweise von den L2-Skalarprodukten harmonischer
      Formen induziert. Es werden die Krümmungen dieser Metriken
      berechnet und Bezüge zu Modulräumen stabiler Vektorbündel
      diskutiert. Dabei ist das Hauptwerkzeug die Hodge-Theorie in
      holomorphen Vektorbündeln über kompakten
      Kählermannigfaltigkeiten.
A new proposal for Galactic dark matter: Effect of f(T) gravity
Creators: name: Rahaman, Farook
name: Biswas, Ritabrata
name: Fatima, Hafiza Ismat
name: Islam, Nasarul
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is still a challenging problem to the theoretical physicists to know the exact nature of the galactic dark matter which causes the galactic rotational velocity to be more or less a constant. We have proposed that the dark matter as an effect of f(T) gravity. Assuming the flat rotation curves as input we have shown that f(T) gravity can explain galactic dynamics. Here, we don' have to introduce dark matter. Spacetime metric inspired by f(T) gravity describes the region up to which the tangential velocity of the test particle is constant. This inherent property appears to be enough to produce stable circular orbits as well as attractive gravity.
description: 7 pages and 1 figure. Minor corrections are made. Accepted for publication in Int.J.Theor.Phys
Mathematical modelling and experimental validation of thermal conductivity of outer layer of fire protective clothing
Creators: name: Maurya, Himanshu
name: Rathour, Rochak
name: Udayraj
name: Das, Apurba
name: Alagirusamy, Ramasamy
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Space Science
subject: Neuroscience
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: Motivation for development of this mathematical model is the difficulties related to the experimental measurement of the thermal conductivity like frequent sample preparation, experimental setup availability and lack of easier methods for quick estimation of thermal conductivity of outer layer of fire protective clothing. Considering this, various studies were devoted in the past to determine the thermal conductivity of fabrics. Two mathematical approaches for prediction of thermal conductivity of woven outer layer have been presented in the present study. Series-parallel thermal resistance configuration has been used for prediction of effective thermal conductivity of the fabric. First approach uses input values of structural parameters and can be useful in the development of new woven fabrics for outer layer of fire protective clothing. Second approach uses fibre volume fraction and thermal conductivity of fibre and air. It is suitable for predicting thermal conductivity of finished fabrics. The values obtained from mathematical model were validated with experimental values.
Point massive particle in General Relativity
Creators: name: Katanaev, M. O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is well known that the Schwarzschild solution describes the gravitational field outside compact spherically symmetric mass distribution in General Relativity. In particular, it describes the gravitational field outside a point particle. Nevertheless, what is the exact solution of Einstein's equations with $δ$-type source corresponding to a point particle is not known. In the present paper, we prove that the Schwarzschild solution in isotropic coordinates is the asymptotically flat static spherically symmetric solution of Einstein's equations with $δ$-type energy-momentum tensor corresponding to a point particle. Solution of Einstein's equations is understood in the generalized sense after integration with a test function. Metric components are locally integrable functions for which nonlinear Einstein's equations are mathematically defined. The Schwarzschild solution in isotropic coordinates is locally isometric to the Schwarzschild solution in Schwarzschild coordinates but differs essentially globally. It is topologically trivial neglecting the world line of a point particle. Gravity attraction at large distances is replaced by repulsion at the particle neighbourhood.
description: 15 pages, references added, 1 figure
Neutrino photoproduction on pseudo Nambu-Goldstone bosons
Creators: name: Alikhanov, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Production of single neutrinos as well as neutrino-antineutrino pairs by photons interacting with pseudo Nambu-Goldstone bosons is studied within the Standard Model. The corresponding cross sections are found analytically. The energy loss due to neutrino emission in a thermal plasma of photons and pions is calculated. It is shown that the obtained neutrino emissivity may be significantly enhanced in hot and dense matter due to in-medium modification of the pion decay constant. Phenomenological consequences for ultrarelativistic heavy-ion collisions and astrophysics are discussed.
description: 20 pages, 7 figures. A discussion and calculations of neutrino emissivities in a hot and dense medium are inserted. Phenomenological consequences are considered. New figures and references added. Accepted for publication in Phys. Lett. B
Chiral Electronics
Creators: name: Kharzeev, Dmitri E.
name: Yee, Ho-Ung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the properties of electric circuits involving Weyl semimetals. The existence of the anomaly-induced chiral magnetic current in a Weyl semimetal subjected to magnetic field causes an interesting and unusual behavior of such circuits. We consider two explicit examples: i) a circuit involving the "chiral battery" and ii) a circuit that can be used as a "quantum amplifier" of magnetic field. The unique properties of these circuits stem from the chiral anomaly and may be utilized for creating "chiral electronic" devices.
description: 5 pages, 2 figures; final version to appear in Physical Review B
Pleistocene fossil snake traces on South Africa’s Cape south coast
Creators: name: Helm, Charles W.
name: Bateman, Mark D.
name: Carr, Andrew S.
name: Cawthra, Hayley C.
name: De Vynck, Jan C.
name: Dixon, Mark G.
name: Lockley, Martin G.
name: Stear, Willo
name: Venter, Jan A.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Pharmacology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Snakes form a large, familiar, and distinctive component of the world’s reptile fauna, with a rich body fossil record stretching back to the Jurassic. The sparse, minimal, and questionable evidence of snake traces in the ichnological record is therefore surprising. Extant snakes in southern Africa employ three types of locomotion—rectilinear, sidewinding, and undulatory, all of which result in distinctive, recognizable traces. A site exhibiting convincing evidence of rectilinear motion, probably made by a puff adder, has been identified in Pleistocene aeolianites on South Africa’s Cape south coast. A new ichnogenus and ichnospecies, Anguinichnus linearis, have been erected to describe this trace. A new suite of optically stimulated luminescence (OSL) ages from aeolianites from the De Kelders Cave locality, 1.4 km to the south, suggests that the site dates to ∼93–83 ka. Trace fossil evidence of sidewinding and undulatory motion is more equivocal and open to alternative interpretations.
Exploring the Dark Side of Cuprate Superconductors: s-wave Symmetry of the Pseudogap
Creators: name: Sakai, S.
name: Blanc, S.
name: Civelli, M.
name: Gallais, Y.
name: Cazayous, M.
name: Measson, M. -A.
name: Wen, J. S.
name: Xu, Z. J.
name: Gu, G. D.
name: Sangiovanni, G.
name: Motome, Y.
name: Held, K.
name: Sacuto, A.
name: Georges, A.
name: Imada, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We reveal the full energy-momentum structure of the pseudogap of underdoped high-Tc cuprate superconductors. Our combined theoretical and experimental analysis explains the spectral-weight suppression observed in the B2g Raman response at finite energies in terms of a pseudogap appearing in the single-electron excitation spectra above the Fermi level in the nodal direction of momentum space. This result suggests an s-wave pseudogap (which never closes in the energy-momentum space), distinct from the d-wave superconducting gap. Recent tunneling and photoemission experiments on underdoped cuprates also find a natural explanation within the s-wave-pseudogap scenario.
description: 9 pages, 10 figures (including Supplementary Information)
Higher spin gravity in 3D: black holes, global charges and thermodynamics
Creators: name: Perez, Alfredo
name: Tempo, David
name: Troncoso, Ricardo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Global charges and thermodynamic properties of three-dimensional higher spin black holes that have been recently found in the literature are revisited. Since these solutions possess a relaxed asymptotically AdS behavior, following the canonical approach, it is shown that the global charges, and in particular the mass, acquire explicit nontrivial contributions given by nonlinear terms in the deviations with respect to the reference background. It is also found that there are cases for which the first law of thermodynamics is fulfilled in the canonical ensemble, i.e., without work terms associated to the presence of higher spin fields, and remarkably, the semiclassical higher spin black hole entropy is exactly reproduced from Cardy formula.
description: 14 pages. Minor changes and references added
Artystów irlandzkich ilustracja książkowa dla dzieci
Creators: name: Wincencjusz-Patyna, Anita
Publisher: name: Quart
Year: 2019

description: Includes a summary in English
description: Quart, Bd. 23 Nr. 1 (2012): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
Kreacja konserwatorska na przykładzie polichromowanych stropów barokowych z plebanii w Praczach Odrzańskich
Creators: name: Kaluch-Tabisz, Marta
Publisher: name: Quart
Year: 2019

description: Includes a summary in English
description: Quart, Bd. 23 Nr. 1 (2012): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
Group actions on Segal operads
Creators: name: Bergner, Julia E.
name: Hackney, Philip
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: Primary 55P48, Secondary 55U10, 55U40, 18C10, 18D50, 18G30, 18G55

description: We give a Quillen equivalence between model structures for simplicial operads, described via the theory of operads, and Segal operads, thought of as certain reduced dendroidal spaces. We then extend this result to give an Quillen equivalence between the model structures for simplicial operads equipped with a group action and the corresponding Segal operads.
description: Revised version. Accepted to Isr J Math
Discrete cores of type III free product factors
Creators: name: Ueda, Yoshimichi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We give a general description of the discrete decompositions of type III factors arising as central summands of free product von Neumann algebras based on our previous works. This enables us to give several precise structural results on type III free product factors.
description: Expanded version
CADE META 3 FRONT END PAINEL AC
Creators: name: Alexandre Cordeiro Macedo
name: Paulo Eduardo Silva de Oliveira
name: Vinicius Eloy dos Reis
name: William José da Conceição Marques
name: Leonardo de Oliveira Alves Sanches Lima
name: Alessandro Lustosa Seixas Pinheiro
name: Cristiane de Freitas Lea
name: Felipe Alberto Moreira
name: Helio Ribeiro da Costa
name: Jorge Luiz Hachem Vasconcelos
name: Wendel Sousa de Anchieta
name: Márcia Abrahão Moura
name: Maria Emília Machado Telles Walter
name: Rafael Timóteo de Sousa Júnior
name: Edna Dias Canedo
name: Georges Daniel Amvame Nze
name: Valério Aymore Martins
name: Adailton Amaro Nunes
name: Alessandra de Vasconcelos Sales
name: Aline Lima da Silva
name: Ana Beatriz de Sousa Monteiro
name: Ana Flavia Araújo Santana
name: André Luiz Chaves da Silva
name: Bruno Justino Garcia Praciano
name: Caroline Emanuele da Silva Sousa
name: Danilo Freire Holanda de Paiva
name: Denise Mitie Taketomi
name: Edle Marcio dos Santos Silva
name: Eduardo Drumond Soares
name: Fábio Lúcio Lopes de Mendonça
name: Felipe Evangelista dos Santos
name: Guilherme Pereira Paiva
name: Hugo Bartolomeu Ferreira
name: Ian Porto e Melo
name: Igor de Almeida Gentil
name: Isabela de Lima Silva
name: Isabela Carolina Martins
name: Italo Eduardo Dias Frota
name: Izadora Oliveira Linhares
name: Jeanne Louize Emygdio
name: Julia Jamile de Oliveira Gonçalves
name: Karen Ferreira Machado
name: Lincoln Abreu Barbosa
name: Lohana Salustiano Cardoso
name: Luiz Fernando Santos de Araujo Caduda
name: Marcelo Dos Santos Vianna
name: Marcio Junior Vieira
name: Marcos Vinicius da Silva Souza
name: Mateus Alves Dantas
name: Noely Gomes de Lima
name: Paulo Henrique Batista Rodrigues
name: Rafael de Arruda Faria
name: Renato Carauta Ribeiro
name: Rogerio de Oliveira Costa
name: Thays de Oliveira Coelho
name: Vanessa Coelho Ribeiro
name: Welber Santos de Oliveira
name: Zaquel Isaque Alves Cabral
Publisher: name: Zenodo
Year: 2022

description: Pesquisa Aplicada com fundamento no estudo de necessidades, análise informacional, concepção, prototipação e experimentação com vistas à inovação tecnológica e de processos no domínio da Defesa Econômica para o Conselho Administrativo de Defesa Econômica – Cade.
title: Verification of a scoring system for the preoperative evaluation of prognosis of patients with spinal metastases
title: Überprüfung eines Scoringsystems zur präoperativen Evaluation der Prognose von Patienten mit Wirbelsäulenmetastasen
Creators: name: Schilling, Thomas Florian
Publisher: name: Philipps-Universität Marburg
Year: 2013
Subjects: Score , Wirbelsäule
retrospektiv
Therapie
retrospective
Metastase
Operation
Prognose
Medizin, Gesundheit

description: Die Therapie von
      Wirbelsäulenmetastasen ist schwierig, da u.a. die Prognose
      des einzelnen Patienten unklar ist. Tokuhashi et al.
      entwickelten 1990 deshalb ein Scoringsystem, das helfen
      sollte, anhand von 6 Paramtern die Prognose von Patienten mit
      Wirbelsäulenmetastasen besser einzuschätzen und die
      Radikalität des operativen oder konservativen Vorgehens zu
      wählen. Ziel der vorliegenden retrospektiven Studie ist die
      Überprüfung dieses Scores und die Suche nach weiteren
      Parametern, die mit der gemessenen Überlebenszeit der
      Patienten korrelieren. In die Studie wurden 151 an der
      Universitätsklinik Marburg behandelte Patienten mit
      Wirbelsäulenmetastasen eingeschlossen. Die Signifikanz der
      Prognoseabschätzung nach Tokuhashi wurde bestätigt. Weitere
      Faktoren mit Einfluß auf die Überlebenszeit fanden sich
      nicht.
description: Therapy of spinal metastases is
      difficult, as prognosis of each patient remains unclear. In
      1990, Tokuhashi et al. developped a scoring system containing
      of 6 parameters in order to estimate prognosis of these
      patients better and to decide on radicality of operative or
      conservative treatment. Aim of this study was to verify
      Tokuhashi's score and to find other parameters with
      correlation with survival time. 151 patients of the
      universitiy hospital Marburg were included in the study.
      Correlation between survival and Tokuhashi's score was
      confirmed. Other parameters affecting survival were not
      found.
Adsorbate surface diffusion: The role of incoherent tunneling in light particle motion
Creators: name: Sanz, A. S.
name: Martinez-Casado, R.
name: Miret-Artes, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The role of incoherent tunneling in the diffusion of light atoms on surfaces is investigated. With this purpose, a Chudley-Elliot master equation constrained to nearest neighbors is considered within the Grabert-Weiss approach to quantum diffusion in periodic lattices. This model is applied to recent measurements of atomic H and D on Pt(111), rendering friction coefficients that are in the range of those available in the literature for other species of adsorbates. A simple extension of the model has also been considered to evaluate the relationship between coverage and tunneling, and therefore the feasibility of the approach. An increase of the tunneling rate has been observed as the surface coverage decreases.
description: 7 pages, 2 figures; important reorganization of the work (including title changes)
Nowo odkryte malowidła ścienne w kaplicy św. Anny przy kościele Franciszkanów w Opolu Cz. II
Creators: name: Kaczmarek, Romuald
name: Witkowski, Jacek
Publisher: name: Quart
Year: 2019

description: Includes a summary in English
description: Quart, Bd. 24 Nr. 2 (2012): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
Determinants of above-ground carbon stocks and productivity in secondary forests along a 3000-m elevation gradient in the Ecuadorian Andes
Creators: name: Pinto, Esteban
name: Cuesta, Francisco
name: Bernardi, Antonella
name: Llerena-Zambrano, Mellisa
name: Pérez, Álvaro J.
name: van der Sande, Masha T.
name: Gosling, William D.
name: Burgess, Kevin S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences

description: Secondary montane forests, covering 30% of forested lands in the Andes, play a crucial role in mitigating the impact of carbon release. However, the mechanisms responsible for carbon sequestration in the above-ground biomass of these forests are not well quantified. Understanding the determinants of above-ground carbon (AGC) dynamics in secondary forests along a 3000-m elevational gradient in the Andes to assess their mitigation potential. We assessed how abiotic and biotic conditions and past human disturbances were related to forest structure and composition, AGC stocks and productivity within sixteen 0.36-ha plots established in secondary forest stands of 30–35 years of age. Structural equation models revealed that changes in temperature conditions along the elevation gradient shaped leaf functional composition, which in turn controlled AGC dynamics. Productivity and temperature decreased with increasing elevation and decreased tree community leaf area. Disturbance legacy (Tree mortality) increased with competitive thinning and low soil fertility. We show that temperature drives AGC dynamics by changing the functional trait composition. This highlights the importance of preserving these forests along elevation gradients and implies potentially strong future changes due to global warming.
Very high early strength calcium aluminate based binary and ternary cementitious systems: properties, hydration and microstructure
Creators: name: Saydan, Murat
name: Keskin, Ülkü Sultan
name: Uzal, Burak
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Calcium aluminate cement (CAC) is a cement type that has superior properties such as rapid strength gain, high resistance to high temperatures and harmful chemicals. However, the result of the using of CACs in the production of structural elements occur strength decreases at later ages as a result of a series of chemical reactions called ‘conversion reactions’ seen in these cements. In this study, the hydration kinetics and the crystalline and amorphous structures formed as a result of hydration were investigated in CAC containing different amounts and types of main oxides-based binary and ternary systems. Considering the results obtained, the main hydration product seen in these specimens was ettringite. Unlike many studies in the literature, metastable structures which cause conversion reactions, such as CAH10, C2AH8, have not been observed. Instead of conversion of the phases, ettringite needles were became thin and elongate which causes the paste structure porous and thus causing expansion and strength reduction at the later stages of hydration in some mixtures produce high amounts of ettringite. On the other hand, it is understood that the formation of strätlingite was limited strength decreases in systems where high silica fume is used.
Slip-velocity of large neutrally-buoyant particles in turbulent flows
Creators: name: Bellani, Gabriele
name: Variano, Evan A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We discuss possible definitions for a stochastic slip velocity that describes the relative motion between large particles and a turbulent flow. This definition is necessary because the slip velocity used in the standard drag model fails when particle size falls within the inertial subrange of ambient turbulence. We propose two definitions, selected in part due to their simplicity: they do not require filtration of the fluid phase velocity field, nor do they require the construction of conditional averages on particle locations. A key benefit of this simplicity is that the stochastic slip velocity proposed here can be calculated equally well for laboratory, field, and numerical experiments. The stochastic slip velocity allows the definition of a Reynolds number that should indicate whether large particles in turbulent flow behave (a) as passive tracers; (b) as a linear filter of the velocity field; or (c) as a nonlinear filter to the velocity field. We calculate the value of stochastic slip for ellipsoidal and spherical particles (the size of the Taylor microscale) measured in laboratory homogeneous isotropic turbulence. The resulting Reynolds number is significantly higher than 1 for both particle shapes, and velocity statistics show that particle motion is a complex non-linear function of the fluid velocity. We further investigate the nonlinear relationship by comparing the probability distribution of fluctuating velocities for particle and fluid phases.
Diffusion of climate-resilient seeds and information: evidence from semi-arid regions of Ghana
Creators: name: Bedi, Shaibu Mellon
name: Kornher, Lukas
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology
subject: Science Policy
subject: Plant Biology

description: This paper examines the drivers of climate-resilient seeds adoption among farm households and their corresponding spatial effects on farmers' neighbours adoption decisions in the semi-arid regions of Ghana, where the impacts of climate change on agriculture are marked. A spatial model was applied to a dataset elicited from farm households in addressing the research objective. The findings indicate the presence of peer or neighbourhood effects in the adoption and diffusion process . The findings also reveal that the socio-economic characteristics of the farm households, plot characteristics, drought condition and the source of information about the climate-resilient seeds influence farmers’ adoption and information diffusion. Finally, the findings imply that drought condition and information from model farmers generate the highest spatial spillover effects on farmers’ neighbours decisions to adopt.
Gendered perceptions of climate change and agricultural adaptation practices: a systematic review
Creators: name: Haque, A. T. M. Sanaul
name: Kumar, Lalit
name: Bhullar, Navjot
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: The present systematic review was undertaken to obtain a detailed understanding of how climate change perceptions and adaptation differ globally by gender and different intersections among the farmers. Findings from 41 studies selected following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol, mostly from Africa and Asia, suggest that climate change perceptions and adaptation are highly contextual and considerably varied by gender and different intersections. Existing gender role, farmers’ age, education, knowledge, marital status, intra-household power structure, religion, social status and ethnicity were intersecting with gender and climate change perception and adaptation. Apart from gender and intersectionality, access to resources, social network and local institutions are found to be important correlates of adaptation strategies by farmers. While agriculture being feminized, mere technological changes are not conclusive to climate change adaptation rather socio-cultural, structural and political changes in inevitable. Female farmers were tend to be more concerned and fatalistic about climate change which reminds us the urgency of culturally appropriate climate change communication to obtain informed decision regarding climate change. Future climate change research could be more gender transformative by exploring the existing inequalities lying in different intersections of gender rather than highlighting binary gender differences only.
On the Laplace transform for tempered holomorphic functions
Creators: name: D'Agnolo, Andrea
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32C38, 44A10, 14F10

description: In order to discuss the Fourier-Sato transform of not necessarily conic sheaves, we compensate the lack of homogeneity by adding an extra variable. We can then obtain Paley-Wiener type results, using a theorem by Kashiwara and Schapira on the Laplace transform for tempered holomorphic functions. As a key tool in our approach, we introduce the subanalytic sheaf of holomorphic functions with exponential growth, which should be of independent interest.
description: 31 pages, section numbering modified to reflect the published version of the paper
Transregionalität der Kult(ur)regionen Bayern – Böhmen – Schlesien zur Zeit der Gegenreformation
Creators: name: Bogade, Marco
Publisher: name: Quart
Year: 2019

description: Includes a summary in English Zawiera streszczenie w języku polskim
description: Quart, Bd. 31 Nr. 1 (2014): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
Współpraca międzynarodowa Instytutu Historii Sztuki Uniwersytetu Wrocławskiego: interdyscyplinarne seminarium poświęcone historii i architekturze Poznania
Creators: name: Libor, Natalia
Publisher: name: Quart
Year: 2019

description: Includes a summary in English
description: Quart, Bd. 32 Nr. 2 (2014): Quart. The Quarterly of the Institute of Art History at the University of Wrocław
A solution to an open problem on the Mathieu series posed by Hoorfar and Qi
Creators: name: Nemes, Gergő
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15, 41A60

description: In this paper, the author gives a solution to an open problem about the famous Mathieu series, that is, he obtains a sharp double inequality for bounding this series.
Methods and models for fibre–matrix interface characterisation in fibre-reinforced polymers: a review
Creators: name: AhmadvashAghbash, Sina
name: Verpoest, Ignaas
name: Swolfs, Yentl
name: Mehdikhani, Mahoor
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Computational Biology

description: The fibre–matrix interface represents a vital element in the development and characterisation of fibre-reinforced polymers (FRPs). Extensive ranges of interfacial properties exist for different composite systems, measured with various interface characterisation techniques. However, the discrepancies in interfacial properties of similar fibre–matrix systems have not been fully addressed or explained. In this review, first, the interface-forming mechanisms of FRPs are established. Following a discourse on three primary factors that affect the fibre–matrix interface, the four main interface characterisation methods (single-fibre fragmentation, single-fibre pull-out, microbond and fibre push-in/-out tests) are described and critically reviewed. These sections review various detailed data reduction schemes, numerical approaches, accompanying challenges and sources of reported scatter. Finally, following the assessment of several infrequent test methods, comprehensive conclusions, prospective directions and intriguing extensions to the field are provided.
Matrix Product Operators and Central Elements: Classical Description of a Quantum State
Creators: name: Hastings, M. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study planar two-dimensional quantum systems on a lattice whose Hamiltonian is a sum of local commuting projectors of bounded range. We consider whether or not such a system has a zero energy ground state. To do this, we consider the problem as a one-dimensional problem, grouping all sites along a column into "supersites"; using $C^*$-algebraic methods (Bravyi and Vyalyi), we can solve this problem if we can characterize the central elements of the interaction algebra on these supersite. Unfortunately, these central elements may be very complex, making brute force impractical. Instead, we show a characterization of these elements in terms of matrix product operators with bounded bond dimension. This bound can be interpreted as a bound on the number of particle types in lattice theories with bounded Hilbert space dimension on each site. Topological order in this approach is related to the existence of certain central elements which cannot be "broken" into smaller pieces without creating an end excitation. Using this bound on bond dimension, we prove that several special cases of this problem are in NP, and we give part of a proof that the general case is in NP. Further, we characterize central elements that appear in certain specific models, including toric code and Levin-Wen models, as either product operators in the Abelian case or matrix product operators with low bond dimension in the non-Abelian case; this matrix product operator representation may have practical application in engineering the complicated multi-spin interactions in the Levin-Wen models.
description: 21 pages, 6 figures; final version in press (and a few more corrections)
Shot Noise Signatures of Charge Fractionalization in the $ν=2$ Quantum Hall edge
Creators: name: Milletarì, Mirco
name: Rosenow, Bernd
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of interactions on shot noise in $ν=2$ quantum Hall edges, where a repulsive coupling between co-propagating edge modes is expected to give rise to charge fractionalization. Using the method of non-equilibrium bosonization, we find that even asymptotically the edge distribution function depends in a sensitive way on the interaction strength between the edge modes. We compute shot noise and Fano factor from the asymptotic distribution function, and from comparison with a reference model of fractionalized excitations we find that the Fano factor can be close to the value of the fractionalized charge.
description: 4.5 pages + supplemental material, 7 figures
A word Hopf algebra based on the selection/quotient principle
Creators: name: Duchamp, G. H. E.
name: Hoang-Nghia, N.
name: Tanasa, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we define a Hopf algebra structure on the vector space spanned by packed words using a selection/quotient coproduct. We show that this algebra is free on its irreducible packed words. We also construct the Hilbert series of this Hopf algebra and we investigate its primitive elements.
description: 13 pages. Several sequences of integers found in the paper are investigated in more detail (and one of them is related to Sloane's OEIS sequence A000629). The presentation is clarified and misprints are corrected. The explanations on the choice of the name of the algebra defined in the paper are changed. Two co-authors have been added
Prevalence and associated factors of binge drinking among high school students in Acapulco, Mexico: a cross-sectional study
Creators: name: Emigdio-Vargas, Abel
name: Morales-Pérez, Arcadio
name: Nava-Aguilera, Elizabeth
name: Dávalos-Martínez, Alfonso
name: Blanco-García, Nubia
name: Barrera-Rodriguez, Elia
name: Morales-Nava, Liliana
name: Andersson, Neil
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Medicine
Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy

description: Youth binge drinking is an important health problem with notable psychosocial consequences. This study estimated the prevalence of and identified factors associated with binge drinking among high school students in Acapulco, Mexico. A cross-sectional study included 5177 students from five high schools. After informed consent, participants received a supervised self-administered questionnaire that collated demographic, socioeconomic, and psycho-affective variables. Bivariate and cluster-adjusted multivariate analysis identified factors associated with binge drinking; the odds ratio adjusted by cluster (ORa) with the Mantel–Haenszel procedure and 99% confidence intervals (CIs) cluster-adjusted (99% CIcla). Period prevalence of binge drinking in the last year was 17.9% (925/5177). Nighttime leisure activities modified the key associations. Among youth with nighttime-leisure, risk factors included history of attempted suicide (ORa 1.82), employee and students (ORa 1.90); and both parents consumed alcohol (ORa 1.47). Risk factors among the group without nocturnal leisure included: age 17 years or more (ORa 1.75); lower grade average ≤8.5 (ORa 1.71); and having a partner (ORa 1.43). Understanding this constellation can help to strengthen local actions aimed at preventing binge drinking and reducing its impact.
The impact of the COVID-19 pandemic on medications for opioid use disorder services in the U.S. and Canada: a scoping review
Creators: name: Parker, Daniel G.
name: Zentner, Daysi
name: Burack, Jacob A.
name: Wendt, Dennis C.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Since the arrival of the COVID-19 pandemic, preliminary evidence suggests that rates of opioid use and overdose in North America have only been exacerbated. During this time, healthcare services providing medications for opioid use disorder (MOUD) have faced heightened challenges, rapidly adjusting services in order to continue to provide access to treatment. To better understand the impact of the pandemic on MOUD services in the U.S. and Canada, this scoping review summarizes and synthesizes the existing literature on this topic. Articles were deemed eligible to be included in this review if they met the following three criteria: focused on MOUD services; situated within the COVID-19 pandemic; and situated within the U.S. or Canada. Common themes among the articles that met inclusion included the impacts of MOUD policy changes; the transition to telehealth; challenges to providing MOUD; innovative changes to services; and recommendations for policy and service changes. Many articles supported MOUD regulatory changes, with some finding these changes had increased access to MOUD for underserved populations. There is currently a pressing need to evaluate the impacts on MOUD services in greater depth, as recent changes could have lasting implications on future MOUD regulatory policies and treatment standards.
Steinkistengräber der älteren Bronzezeit auf dem Lauseberge südlich von Bornstedt im Kreise Sangerhausen, sowie bei Neehausen und Höhnstedt im Mansfelder Seekreise
Creators: name: Größler, Hermann
Publisher: name: Jahresschrift für mitteldeutsche Vorgeschichte
Year: 2019

description: Jahresschrift für mitteldeutsche Vorgeschichte, Bd. 8 (1909): Jahresschrift für die Vorgeschichte der sächsisch-thüringischen Länder
Polarons as stable solitary wave solutions to the Dirac-Coulomb system
Creators: name: Comech, A. A.
name: Zubkov, M. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider solitary wave solutions to the Dirac--Coulomb system both from physical and mathematical points of view. Fermions interacting with gravity in the Newtonian limit are described by the model of Dirac fermions with the Coulomb attraction. This model also appears in certain condensed matter systems with emergent Dirac fermions interacting via optical phonons. In this model, the classical soliton solutions of equations of motion describe the physical objects that may be called polarons, in analogy to the solutions of the Choquard equation. We develop analytical methods for the Dirac--Coulomb system, showing that the no-node gap solitons for sufficiently small values of charge are linearly (spectrally) stable.
description: Latex, 26 pages