cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
What can simulated molecular clouds tell us about real molecular clouds?
Creators: name: Duarte-Cabral, A.
name: Dobbs, C. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the properties of giant molecular clouds (GMCs) from a smoothed particle hydrodynamics simulation of a portion of a spiral galaxy, modelled at high resolution, with robust representations of the physics of the interstellar medium. We examine the global molecular gas content of clouds, and investigate the effect of using CO or H2 densities to define the GMCs. We find that CO can reliably trace the high-density H2 gas, but misses less dense H2 clouds. We also investigate the effect of using 3D CO densities versus CO emission with an observer's perspective, and find that CO-emission clouds trace well the peaks of the actual GMCs in 3D, but can miss the lower density molecular gas between density peaks which is often CO-dark. Thus, the CO emission typically traces smaller clouds within larger GMC complexes. We also investigate the effect of the galactic environment (in particular the presence of spiral arms), on the distribution of GMC properties, and we find that the mean properties are similar between arm and inter-arm clouds, but the tails of some distributions are indicative of intrinsic differences in the environment. We find highly filamentary clouds (similar to the giant molecular filaments of our Galaxy) exclusively in the inter-arm region, formed by galactic shear. We also find that the most massive GMC complexes are located in the arm, and that as a consequence of more frequent cloud interactions/mergers in the arm, arm clouds are more sub-structured and have higher velocity dispersions than inter-arm clouds.
description: 19 pages, 16 figures, MNRAS
Fachbezogene Interventionen der Logopädie in der Regelschule im Kanton Zürich Befragung bezüglich der Umsetzung von fachbezogenen Interventionen des neu definierten Berufsauftrags im Schuljahr 18/19 mit besonderem Fokus auf die präventiven Projekte
Creators: name: Meier, Melanie
name: Nolfi, Martina
Publisher: name: Zenodo
Year: 2020
Subjects: Logopädie
Intervention
Regelschule
Bachelorarbeit

description: Zu den logopädischen Aufgaben gehören laut Berufsauftrag nebst der Therapie auch die fachbezogenen Interventionen. Die vorliegende Arbeit untersucht, inwiefern diese von Logopädinnen1 umgesetzt werden, und welche Faktoren einen Einfluss auf deren Durchführung haben. Mittels Befragung von Zürcher Logopädinnen wird die Durchführung von fachbezogenen Interventionen evaluiert, die Gelingensbedingungen für die integrative Arbeit in der Praxis untersucht und das vorhandene Verbesserungspotential erläutert. Es zeigt sich, dass die Hälfte der befragten Logopädinnen alle fachbezogenen Interventionsformen durchführt. Besonders bei den präventiven Projekten besteht ein grosses Verbesserungspotential.
Estimation methods for the LRD parameter under a change in the mean
Creators: name: Rooch, Aeneas
name: Zelo, Ieva
name: Fried, Roland
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: Hurst parameter
subject: change-point problems
subject: long memory
subject: long-range dependence
subject: jump
subject: estimation
subject: 310
subject: 330
subject: 620

description: When analyzing time series which are supposed to exhibit long-range dependence (LRD), a basic issue is the estimation of the LRD parameter, for example the Hurst parameter H 2 (1=2; 1). Conventional estimators of H easily lead to spurious detection of long memory if the time series includes a shift in the mean. This defect has fatal consequences in change-point problems: Tests for a level shift rely on H, which needs to be estimated before, but this estimation is distorted by the level shift. We investigate two blocks approaches to adapt estimators of H to the case that the time series includes a jump and compare them with other natural techniques as well as with estimators based on the trimming idea via simulations. These techniques improve the estimation of H if there is indeed a change in the mean. In the absence of such a change, the methods little affect the usual estimation. As adaption, we recommend an overlapping blocks approach: If one uses a consistent estimator, the adaption will preserve this property and it performs well in simulations.
description: Discussion Paper / SFB823;32, 2016
Quasispecies dynamics on a network of interacting genotypes and idiotypes: Applications to autoimmunity and immunodeficiency
Creators: name: Barbosa, Valmir C.
name: Donangelo, Raul
name: Souza, Sergio R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In spite of their many facets, the phenomena of autoimmunity and immunodeficiency seem to be related to each other through the subtle links connecting retroviral mutation and action to immune response and adaptation. In a previous work, we introduced a network model of how a set of interrelated genotypes (called a quasispecies, in the stationary state) and a set of interrelated idiotypes (an idiotypic network) interact. That model, which does not cover the case of a retroviral quasispecies, was instrumental for the study of quasispecies survival when confronting the immune system and led to the conclusion that, unlike what happens when a quasispecies is left to evolve by itself, letting genotypes mutate too infrequently leads to the destruction of the quasispecies. Here we extend that genotype-idiotype interaction model by the addition of a further parameter ($ν$) to account for the action of retroviruses (i.e., the destruction of idiotypes by genotypes). We give simulation results within a suitable parameter niche, highlighting the issues of quasispecies survival and of the onset of autoimmunity through the appearance of the so-called pathogenic idiotypes. Our main findings refer to how $ν$ and $λ$, a parameter describing the rate at which idiotypes get stimulated, relate to each other. While for $ν>λ$ the quasispecies survives at the expense of weakening the immune system significantly or even destroying it, for $ν
The accelerated learning of the public sphere: the case of the yellow vests'movement in France
Creators: name: Balmon, Theodora
Publisher: name: Zenodo
Year: 2023
Subjects: public sphere
Fraser's public sphere
social movement
Yellow vests
adults learning
social media
accelerated society

description: Relying on Rosa’s theory of the accelerated society and on Fraser’s theory of the public sphere, we intend to analyze the Yellow vests movement which shook the French Government, between October 2018 and December 2019. Despite its lack of mainstream roots and legitimacy, the movement eventually gained knowledges and skills to reach and stand in the public sphere. In the context of an accelerated society, where individuals are coping with the issues of space and time compressions, as well as a rapid technological obsolescence, the movement was able to set up breathing spaces to think and act, turning away Facebook from entertaining.
A point-line incidence identity in finite fields, and applications
Creators: name: Murphy, Brendan
name: Petridis, Giorgis
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $E \subseteq \mathbb{F}_q^2$ be a set in the 2-dimensional vector space over a finite field with $q$ elements. We prove an identity for the second moment of its incidence function and deduce a variety of existing results from the literature, not all naturally associated with lines in $\mathbb{F}_q^2$, in a unified and elementary way.
description: 30 pages
Predigt im Erzstift St. Peter zu Salzburg anläßlich der Tagung der Edith-Stein-Gesellschaft Deutschland am 18. April 2010
Creators: name: Kothgasser, Alois M.
Publisher: name: Edith Stein Jahrbuch
Year: 2025

description: 1646255054
description: Edith Stein Jahrbuch, V. 17 (2011): Edith Stein Jahrbuch, Band 17
Experimental study and simulation of a micro-discharge with limited cathode area
Creators: name: Dufour, Thierry
name: Overzet, Lawrence J.
name: Dussart, Remi
name: Pitchford, L. C.
name: Sadeghi, N
name: Lefaucheux, P
name: Kulsreshath, M
name: Ranson, P
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report in this paper simulation results and experimental measurements to characterize a micro-discharge generated in a single micro cavity device operating in helium. By spatially limiting the cathode surface area using a dielectric layer, we demonstrate the ability of the micro-discharge to work in a steady-state abnormal glow regime. The physical properties of this regime are discussed.
Digital Satellites in Humanistic Research
Creators: name: Lamqaddam, Houda
Publisher: name: Zenodo
Year: 2023
Subjects: digital humanities
digital satellites
sustainability
information visualisation

description: Though the argument for digital tools in humanistic research has been growing, they are often appreciated based on their validity in addressing specific research questions. In order to properly assess their effective value to the field, a more long-term assessment is needed. In this talk, I will present the concept of Digital Satellites in humanistic Research. Through the analogy with artificial satellites, I interrogate the short and long-term function of digital tools in DH by looking beyond their instrumental phase, into their lifecycle in its entirety. I will use concrete examples of the Cornelia digital art history project infrastructure to show how the proposed design principles can be applied.
Edith Steins Untersuchung des Potenz-Akt-Schemas und ihr Beitrag zu einer modernen Ontologie
Creators: name: Hähnel, Martin
Publisher: name: Edith Stein Jahrbuch
Year: 2025

description: 1646254937
description: Edith Stein Jahrbuch, V. 17 (2011): Edith Stein Jahrbuch, Band 17
Shape, orientation and magnitude of the curl quantum flux, the coherence and the statistical correlations in energy transport at nonequilibrium steady state
Creators: name: Zhang, Zhedong
name: Wang, Jin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a quantitative description of the nonequilibriumness based on the model of coupled oscillators interacting with multiple energy sources. This can be applied to the study of vibrational energy transport in molecules. The curl quantum flux quantifying the nonequilibriumness and time-irreversibility is quantified in the coherent representation and we find the geometric description of the shape and polarization of the flux which provides the connection between the microscopic description of quantum nonequilibriumness and the macroscopic observables, i.e., correlation function. We use the Wilson loop integral to quantify the magnitude of curl flux, which is shown to be correlated to the correlation function as well. Coherence contribution is explicitly demonstrated to be non-trivial and to considerably promote the heat transport quantified by heat current and efficiency. This comes from the fact that coherence effect is microscopically reflected by the geometric description of the flux. To uncover the effect of vibron-phonon coupling between the vibrational modes of molecular stretching (vibron) and the molecular chain (phonon), we further explore the influences of localization, which leads to the coherent and incoherent regimes that are characterised by the current-current correlations.
description: 21 pages, 6 figures
Computing forces on interface elements exerted by dislocations in an elastically anisotropic crystalline material
Creators: name: Liu, Bing
name: Arsenlis, Athanasios
name: Aubry, Sylvie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Driven by the growing interest in numerical simulations of dislocation-interface interactions in general crystalline materials with elastic anisotropy, we develop algorithms for the integration of interface tractions needed to couple dislocation dynamics with a finite element or boundary element solver. The dislocation stress fields in elastically anisotropic media are made analytically accessible through the spherical harmonics expansion of the derivative of Green's function, and analytical expressions for the forces on interface elements are derived by analytically integrating the spherical harmonics series recursively. Compared with numerical integration by Gaussian quadrature, the newly developed analytical algorithm for interface traction integration is highly beneficial in terms of both computation precision and speed.
Idealized multigrid algorithm for staggered fermions
Creators: name: Kalkreuter, Thomas
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 1993
Subjects: subject: 530
subject: lattice field theory
subject: gauge field theory: SU(2)
subject: fermion: propagator
subject: operator: Dirac
subject: numerical methods: Monte Carlo
subject: tables

description: doi:10.3204/PUBDB-2017-09916
description: An idealized multigrid algorithm for the computation of propagators of staggered fermions is investigated. Exemplified in four-dimensional SU(2) gauge fields, it is shown that the idealized algorithm preserves criticality under coarsening. The same is not true when the coarse grid operator is defined by the Galerkin prescription. Relaxation times in computations of propagators are small, and critical slowing is strongly reduced (or eliminated) in the idealized algorithm. Unfortunately, this algorithm is not practical for production runs, but the investigations presented here answer important questions of principle.
Entanglement spectrum of fermionic bilayer honeycomb lattice: Hofstadter butterfly
Creators: name: Moradi, Z.
name: Abouie, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We perform an analytical study of the energy and entanglement spectrum of non-interacting fermionic bilayer honeycomb lattices in the presence of trigonal warping in the energy spectrum, on-site energy difference and uniform magnetic field. Employing single particle correlation functions, we present an explicit form for layer-layer entanglement Hamiltonian whose spectrum is entanglement spectrum. We demonstrate that in the absence of trigonal warping, at zero on-site energy difference exact correspondence is established between entanglement spectrum and energy spectrum of monolayer which means that the entanglement spectrum perfectly reflects the edge state properties of the bilayer. We also show that trigonal warping breaks down such a perfect correspondence, however, in $Γ$-K direction in hexagonal Brillouin zone, their behaviors are remarkably the same for particular relevances of hopping parameters. In the presence of an on-site energy difference the symmetry of entanglement spectrum is broken with opening an indirect entanglement gap. We also study the effects of a perpendicular magnetic field on both energy and the entanglement spectrum of the bilayer in the presence of trigonal warping and on-site energy difference. We demonstrate that the entanglement spectrum versus magnetic flux has a self similar fractal structure, known Hofstadter butterfly. Our results also show that the on-site energy difference causes a transition from the Hofstadter butterfly to a tree-like picture.
description: 10 pages, 14 figures, submitted
Lifshitz-scaling to Lorentz-violating high derivative operator and gamma-ray busts
Creators: name: Passos, E.
name: Abreu, E. M. C.
name: Anacleto, M. A.
name: Brito, F. A.
name: Wotzasek, C.
name: Zarro, C. A. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we have used a Hořava-Lifshitz scaling to rewrite a Lorentz-violating higher-order derivative electrodynamics controlled by a background four-vector $n_μ$. The photon propagator was obtained and we have analyzed the dispersion relation and the observational results of gamma-ray burst (GRB) experiments were used. The limits of the critical exponent were discussed in the light of the GRB data and the physical implications were compared with the current GRB-Lorentz-invariance-violation literature. We show that the bound for the Lorentz-violating coupling for dimension-six operators, obtained from a Hořava-Lifshitz scaling, is eight orders of magnitude better than the result found without considering a Hořava-Lifshitz scaling, also this bound is nearby one, which is expected to be relevant phenomenologically.
description: 7 pages, 1 figure, Latex; version to appear in PRD
The Polyakov loop at next-to-next-to leading order
Creators: name: Berwein, Matthias
name: Brambilla, Nora
name: Petreczky, Peter
name: Vairo, Antonio
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the next-to-next-to-leading correction to the expectation value of the Polyakov loop or equivalently to the free energy of a static charge. This correction is of order $g^5$. We show that up to this order the free energy of the static charge is proportional to the quadratic Casimir operator of the corresponding representation. We also compare our perturbative result with the most recent lattice results in SU(3) gauge theory.
description: 65 pages, 13 figures
Die Originalität von Edith Steins Beantwortung der Frage nach dem Individuationsprinzip
Creators: name: Alfieri, Francesco
Publisher: name: Edith Stein Jahrbuch
Year: 2025

description: 164625497X
description: Edith Stein Jahrbuch, V. 17 (2011): Edith Stein Jahrbuch, Band 17
Determination of mass hierarchy with $ν_μ\to ν_τ$ appearance and the effect of nonstandard interactions
Creators: name: Rashed, Ahmed
name: Datta, Alakabha
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Crucial developments in neutrino physics would be the determination of the mass hierarchy (MH) and measurement of the CP phase in the leptonic sector. The patterns of the transition probabilities $P(ν_μ\rightarrow ν_τ)$ and $P(\barν_μ\rightarrow \barν_τ)$ are sensitive to these oscillation parameters. An asymmetry parameter can be defined as the difference of these two probabilities normalized to their sum. The profile of the asymmetry parameter gives a clear signal of the mass ordering as it is found to be positive for inverted hierarchy and negative for normal hierarchy. The asymmetry parameter is also sensitive to the CP phase. We consider the effects of non-standard neutrino interactions (NSI) on the determination of the mass hierarchy. Since we assume the largest new physics effects involve the $τ$ sector only, we ignore NSI in production and study the NSI effects in detection as well as along propagation. We find that the NSI effects can significantly modify the prediction of the asymmetry parameter though the MH can still be resolved.
description: 14 pages and 20 figures
Exact barotropic distributions in Einstein-Gauss-Bonnet gravity
Creators: name: Maharaj, Sunil D.
name: Chilambwe, Brian
name: Hansraj, Sudan
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: New exact solutions to the field equations in the Einstein--Gauss--Bonnet modified theory of gravity for a 5--dimensional spherically symmetric static distribution of a perfect fluid is obtained. The Frobenius method is used to obtain this solution in terms of an infinite series. Exact solutions are generated in terms of polynomials from the infinite series. The 5--dimensional Einstein solution is also found by setting the coupling constant to be zero. All models admit a barotropic equation of state. Linear equations of state are admitted in particular models with the energy density profile of isothermal distributions. We examine the physicality of the solution by studying graphically the isotropic pressure and the energy density. The model is well behaved in the interior and the weak, strong and dominant energy conditions are satisfied.
description: 15 pages, submitted for publication
Transport of Spin Qubits with Donor Chains under Realistic Experimental Conditions
Creators: name: Mohiyaddin, Fahd A.
name: Kalra, Rachpon
name: Laucht, Arne
name: Rahman, Rajib
name: Klimeck, Gerhard
name: Morello, Andrea
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to transport quantum information across some distance can facilitate the design and operation of a quantum processor. One-dimensional spin chains provide a compact platform to realize scalable spin transport for a solid-state quantum computer. Here, we model odd-sized donor chains in silicon under a range of experimental non-idealities, including variability of donor position within the chain. We show that the tolerance against donor placement inaccuracies is greatly improved by operating the spin chain in a mode where the electrons are confined at the Si-SiO$_2$ interface. We then estimate the required timescales and exchange couplings, and the level of noise that can be tolerated to achieve high fidelity transport. We also propose a protocol to calibrate and initialize the chain, thereby providing a complete guideline for realizing a functional donor chain and utilizing it for spin transport.
description: 19 pages, 12 figures
Spin glass phase transitions in the random feedback vertex set problem
Creators: name: Qin, Shao-Meng
name: Zeng, Ying
name: Zhou, Hai-Jun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: A feedback vertex set (FVS) of an undirected graph contains vertices from every cycle of this graph. Constructing a FVS of sufficiently small cardinality is very difficult in the worst cases, but for random graphs this problem can be efficiently solved after converting it into an appropriate spin glass model [H.-J. Zhou, Eur. Phys. J. B 86 (2013) 455]. In the present work we study the local stability and the phase transition properties of this spin glass model on random graphs. For both regular random graphs and Erdös-Rényi graphs we determine the inverse temperature $β_l$ at which the replica-symmetric mean field theory loses its local stability, the inverse temperature $β_d$ of the dynamical (clustering) phase transition, and the inverse temperature $β_c$ of the static (condensation) phase transition. We find that $β_{l}$, $β_{d}$, and $β_c$ change with the (mean) vertex degree in a non-monotonic way; $β_d$ is distinct from $β_c$ for regular random graphs of vertex degrees $K\geq 64$, while $β_d$ are always identical to $β_c$ for Erdös-Rényi graphs (at least up to mean vertex degree $c=512$). We also compute the minimum FVS size of regular random graphs through the zero-temperature first-step replica-symmetry-breaking mean field theory and reach good agreement with the results obtained on single graph instances by the belief propagation-guided decimation algorithm. Taking together, this paper presents a systematic theoretical study on the energy landscape property of a spin glass system with global cycle constraints.
description: 15 pages, including 7 figures and 3 appendices. Submitted to PRE in February 2016
title: Anomaly Detection in Power Grids by Means of Graph Convolutional Neural Networks
Creators: name: Lubowski, Wolfgang
Publisher: name: TU Wien
Year: 2023
Subjects: subject: graph signal processing
subject: neural networks
subject: power grid
subject: anomaly detection

description: In recent years, great successes have been achieved through the application of artificial neural networks in engineering and science. In particular, convolutional neural networks (CNNs), i.e. those based on the convolution operation, proved to be useful. The application of CNNs, however, has so far been limited to data acquired in Euclidean domains, such as pixels in a square grid or time series data with constant sampling frequency. Strict neighborhood relationships between individual data points are a requirement for the applicability of CNNs. For numerous technical and scientific applications, exactly this requirement cannot be met. An example, of a problem that is poorly handled by current machine learning technologies is anomaly detection in power grids. Graphs that can be used to model arbitrary neighborhood re- lationships between data points are often the most natural approach when processing such data. In the field of graph signal processing there is a generalization of the convolution operation for graph signals. Based on this, the new concept of graph convolutional neural networks developed in the last years. The applicability of graph convolution neural networks to concrete engineer- ing problems has been insufficiently studied. This thesis presents, how an anomaly detection model based on a graph convolutional neural network can be implemented. The performance of the model for the detection of anomalies in voltage data from a power grid is examined. An adaption of the popular GCN framework is proposed, such that the problem of over-smoothing in this network is overcome.
Etching Processes of Polytetrafluoroethylene Surfaces Exposed to He and He-O2 Atmospheric Post-discharges
Creators: name: Hubert, J
name: Dufour, Thierry
name: Vandencasteele, Nicolas
name: Desbief, Simon
name: Lazzaroni, Roberto
name: Reniers, F
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A comparative study of polytetrafluoroethylene (PTFE) surfaces treated by the post-discharge of He and He-O2 plasmas at atmospheric pressure is presented. The characterization of treated PTFE surfaces and the species involved in the surface modification are related. In pure He plasmas, no significant change of the surface has been observed by X-ray photoelectron spectroscopy (XPS), dynamic water contact angles (dWCA) and atomic force microscopy (AFM), in spite of important mass losses recorded. According to these observations, a layer-by-layer physical etching without any preferential orientation is proposed, where the highly energetic helium metastables are the main species responsible for the scission of --(CF2)n-- chains. In He--O 2 plasmas, as the density of helium metastables decreases as a function of the oxygen flow rate, the treatment leads to fewer species ejected from the PTFE surfaces (in agreement with mass loss measurements and the detection of fluorinated species onto aluminum foil). However, the dWCA and AFM measurements show an increase in the hydrophobicity and the roughness of the surface. The observed alveolar structures are assumed to be caused by an anisotropic etching where the oxygen atoms etch mainly the amorphous phase.
Germany’s Energiewende: A tale of increasing costs and decreasing willingness-to-pay
Creators: name: Andor, Mark A.
name: Frondel, Manuel
name: Vance, Colin
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: willingness-to-pay
subject: consequential script
subject: cheap talk
subject: 310
subject: 330
subject: 620

description: This paper presents evidence that the accumulating costs of Germany’s ambitious plan to transform its system of energy provision – the so-called Energiewende – are butting up against consumers’ decreased willingness-to-pay (WTP) for it. Following a descriptive presentation that traces the German promotion of renewable energy technologies since 2000, we draw on two stated-preference surveys conducted in 2013 and 2015 that elicit the households’ WTP for green electricity. To deal with the bias that typifies hypothetical responses, a switching regression model is estimated that distinguishes respondents according to whether they express definite certainty in their reported WTP. Our results reveal a strong contrast between the households’ general acceptance of supporting renewable energy technologies and their own WTP for green electricity.
description: Discussion Paper / SFB823;31, 2016
Modelling Trading Networks and the Role of Trust
Creators: name: Barrio, Rafael A.
name: Govezensky, Tzipe
name: Ruiz-Gutiérrez, Élfego
name: Kaski, Kimmo K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We present a simple dynamical model for describing trading interactions between agents in a social network by considering only two dynamical variables, namely money and goods or services, that are assumed conserved over the whole time span of the agents' trading transactions. A key feature of the model is that agent-to-agent transactions are governed by the price in units of money per goods, which is dynamically changing, and by a trust variable, which is related to the trading history of each agent. All agents are able to sell or buy, and the decision to do either has to do with the level of trust the buyer has in the seller, the price of the goods and the amount of money and goods at the disposal of the buyer. Here we show the results of extensive numerical calculations under various initial conditions in a random network of agents and compare the results with the available related data. In most cases the agreement between the model results and real data turns out to be fairly good, which allow us to draw some general conclusions as how different trading strategies could affect the distribution of wealth in different kinds of societies.
description: 8 pages, 10 figures
title: L'inizio del cammino professionale. I tirocini curricolari delle lauree pedagogiche prima e durante la pandemia
Creators: name: Deiana, Salvatore
name: Secci, Claudia
Publisher: name: UNICApress
Year: 2023

description: Negli ultimi decenni, i corsi di laurea universitari hanno conosciuto una parziale modifica del loro senso e orientamento, vedendo crescere il rilievo degli aspetti professionalizzanti della formazione impartita. Questo spostamento parziale della direzione formativa ha comportato anche una maggiore interazione con il mondo del lavoro, nell’ottica di una formazione in cui la centralità di studenti e studentesse e della costruzione di basi germinali per il loro futuro risultassero criteri fondamentali. A tale riguardo, in alcuni corsi di laurea è stata avviata e progressivamente incrementata l’esperienza di tirocini curricolari di prima formazione professionale. Ciò è avvenuto in maniera significativa nelle triennali e specialistiche, in seguito e tuttora denominate magistrali, dell’ambito educativo e pedagogico. Con i commi 594-601 della legge 205 del 2017, tali corsi sono stati anche formalmente riconosciuti come deputati alla formazione rispettivamente degli educatori sociopedagogici e dei pedagogisti.
Properties of the Interstellar Medium in Star-Forming Galaxies at z~1.4 revealed with ALMA
Creators: name: Seko, Akifumi
name: Ohta, Kouji
name: Yabe, Kiyoto
name: Hatsukade, Bunyo
name: Akiyama, Masayuki
name: Iwamuro, Fumihide
name: Tamura, Naoyuki
name: Dalton, Gavin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We conducted observations of 12CO(J=5-4) and dust thermal continuum emission toward twenty star-forming galaxies on the main sequence at z~1.4 using ALMA to investigate the properties of the interstellar medium. The sample galaxies are chosen to trace the distributions of star-forming galaxies in diagrams of stellar mass-star formation rate and stellar mass-metallicity. We detected CO emission lines from eleven galaxies. The molecular gas mass is derived by adopting a metallicity-dependent CO-to-H2 conversion factor and assuming a CO(5-4)/CO(1-0) luminosity ratio of 0.23. Molecular gas masses and its fractions (molecular gas mass/(molecular gas mass + stellar mass)) for the detected galaxies are in the ranges of (3.9-12) x 10^{10} Msun and 0.25-0.94, respectively; these values are significantly larger than those in local spiral galaxies. The molecular gas mass fraction decreases with increasing stellar mass; the relation holds for four times lower stellar mass than that covered in previous studies, and that the molecular gas mass fraction decreases with increasing metallicity. Stacking analyses also show the same trends. The dust thermal emissions were clearly detected from two galaxies and marginally detected from five galaxies. Dust masses of the detected galaxies are (3.9-38) x 10^{7} Msun. We derived gas-to-dust ratios and found they are 3-4 times larger than those in local galaxies. The depletion times of molecular gas for the detected galaxies are (1.4-36) x 10^{8} yr while the results of the stacking analysis show ~3 x 10^{8} yr. The depletion time tends to decrease with increasing stellar mass and metallicity though the trend is not so significant, which contrasts with the trends in local galaxies.
description: Accepted for publication in the ApJ
Edith Stein als "Prophetin" und Mahnerin der Päpste Pius XI. und Pius XII. und die Bedeutung der Versöhnung mit dem Judentum für die Einheit der Kirche
Creators: name: Beckmann-Zöller, Beate
Publisher: name: Edith Stein Jahrbuch
Year: 2025

description: 1646255003
description: Edith Stein Jahrbuch, V. 17 (2011): Edith Stein Jahrbuch, Band 17
Inside black holes with synchronized hair
Creators: name: Brihaye, Yves
name: Herdeiro, Carlos
name: Radu, Eugen
Publisher: name: arXiv
Year: 2016
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: Recently, various examples of asymptotically flat, rotating black holes (BHs) with synchronized hair have been explicitly constructed, including Kerr BHs with scalar or Proca hair, and Myers-Perry BHs with scalar hair and a mass gap, showing there is a general mechanism at work. All these solutions have been found numerically, integrating the fully non-linear field equations of motion from the event horizon outwards. Here, we address the spacetime geometry of these solutions inside the event horizon. Firstly, we provide arguments, within linear theory, that there is no regular inner horizon for these solutions. Then, we address this question fully non-linearly, using as a tractable model five dimensional, equal spinning, Myers-Perry hairy BHs. We find that, for non-extremal solutions: $(1)$ the inside spacetime geometry in the vicinity of the event horizon is smooth and the equations of motion can be integrated inwards; $(2)$ before an inner horizon is reached, the spacetime curvature grows (apparently) without bound. In all cases, our results suggest the absence of a smooth Cauchy horizon, beyond which the metric can be extended, for hairy BHs with synchronized hair.
description: 15 pages, 4 figures
Down Syndrom und frühkindlicher Autismus. Die Doppeldiagnose als therapeutische Herausforderung in der logopädischen Frühtherapie bei 2-6jährigen Kindern
Creators: name: Nideröst Battaini, Beatrice Franziska
Publisher: name: Zenodo
Year: 2020
Subjects: Logopädie
Autismus
Down-Syndrom
Bachelorarbeit

description: Kinder mit einer Doppeldiagnose Down Syndrom plus Autismus-Spektrum-Störung unterscheiden sich in ihrem Verhalten, ihren Bedürfnissen und Einschränkungen von Kindern mit einem isolierten Down Syndrom. Die Sprachtherapie bei dieser Doppeldiagnose stellt grosse Anforderungen an die Persönlichkeit, die Motivation und die fachliche Qualifikation von Logopäden/innen. Ziel dieser Arbeit ist es, evaluierte sprachtherapeutische Konzepte für Kinder mit dem Down Syndrom und einer Autismus-Spektrum-Störung zu eruieren. Der aktuelle Wissenstand wurde durch eine Literaturrecherche erhoben. Daraus ergab sich, dass spezifische Konzepte, welche auch einen Einfluss auf die Sprache und Kommunikation haben, auf verhaltenstherapeutischen Methoden basieren. Interventionen welche gezielt an der Sprache ansetzen, konnten keine gefunden werden. Daher wurden die Symptome des isolierten Down Syndroms, des idiopathischen frühkindlichen Autismus und diejenigen einer Doppeldiagnose verglichen mit dem Ziel, therapierelevante Übereinstimmungen und Abweichungen aufzuzeigen. Unter Berücksichtigung der Besonderheiten bei einer Doppeldiagnose erwiesen sich unter den evaluierten Konzepten zur Förderung von Sprache und Kommunikation für das Down Syndrom und für die Autismus-Spektrum-Störung deren drei aus dem Bereich der Unterstützten Kommunikation als besonders geeignet: der TEACCH® Ansatz, die PECS® Methode und die Verwendung von Sprachausgabegeräten zur Unterstützung oder dem Ersatz der Lautsprache. Die Gebärden-unterstützte Kommunikation eignet sich zur Verbesserung der rezeptiven Fähigkeiten, kann als Unterstützung der expressiven Sprache bei Kindern mit einer Doppeldiagnose jedoch kaum erfolgreich eingesetzt werden.
Synaptic Algebras
Creators: name: Foulis, D. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47L30 (46L70, 47B15)

description: A synaptic algebra is both a special Jordan algebra and a spectral order-unit normed space satisfying certain natural conditions suggested by the partially ordered Jordan algebra of bounded Hermitian operators on a Hilbert space. The adjective "synaptic," borrowed from biology, is meant to suggest that such an algebra coherently "ties together" the notions of a Jordan algebra, a spectral order-unit normed space, a convex effect algebra, and an orthomodular lattice. Prototypic examples of synaptic algebras are the special Jordan algebra of all self-adjoint elements in a von Neumann algebra, the self-adjoint elements in a Rickart C*-algebra, the self-adjoint elements in an AW*-algebra, D. Topping's JW- and AJW-algebras, and the generalized Hermitian (GH-) algebras introduced and studied by the author and S. Pulmannová. All the foregoing examples are norm complete, but synaptic algebras are more general, and even a commutative synaptic algebra need not be norm complete.
On entropy for autoequivalences of the derived category of curves
Creators: name: Kikuta, Kohei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: To an exact endofunctor of a triangulated category with a split-generator, the notion of entropy is given by Dimitrov-Haiden-Katzarkov-Kontsevich, which is a (possibly negative infinite) real-valued function of a real variable. It is important to evaluate the value of the entropy at zero in relation to the topological entropy. In this paper, we study the entropy at zero of an exact autoequivalence of the derived category of a complex smooth projective curve, and prove that it coincides with the natural logarithm of the spectral radius of the induced automorphism on its numerical Grothendieck group.
description: 14 pages. v2: minor changes
On Dimensional Reduction of Magical Supergravity Theories
Creators: name: Kan, Naoto
name: Mizoguchi, Shun'ya
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove, by a direct dimensional reduction and an explicit construction of the group manifold, that the nonlinear sigma model of the dimensionally reduced three-dimensional A = R magical supergravity is F4(+4)/(USp(6)xSU(2)). This serves as a basis for the solution generating technique in this supergravity as well as allows to give the Lie algebraic characterizations to some of the parameters and functions in the original D = 5 Lagrangian. Generalizations to other magical supergravities are also discussed.
description: 15 pages
Chemical mechanisms inducing a dc current measured in the flowing post-discharge of an RF He-O2 plasma torch
Creators: name: Dufour, Thierry
name: Hubert, J
name: Vandencasteele, N
name: Reniers, F
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The post-discharge of an RF plasma torch supplied with helium and oxygen gases is characterized by mass spectrometry, optical emission spectroscopy and electrical measurements. We have proved the existence of a dc current in the post-discharge (1--20 A), attributed to the Penning ionization of atmospheric nitrogen and oxygenated species. The mechanisms ruling this dc current are investigated through experiments in which we discuss the influence of the O2 flow rate, the He flow rate and the distance separating the plasma torch from a material surface located downstream.
X-ray Source Heights in a Solar Flare: Thick-target versus Thermal Conduction Front Heating
Creators: name: Reep, Jeffrey W.
name: Bradshaw, Stephen J.
name: Holman, Gordon D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of solar flares with RHESSI have shown X-ray sources traveling along flaring loops, from the corona down to the chromosphere and back up. The 28 November 2002 C1.1 flare, first observed with RHESSI by Sui et al. 2006 and quantitatively analyzed by O'Flannagain et al. 2013, very clearly shows this behavior. By employing numerical experiments, we use these observations of X-ray source height motions as a constraint to distinguish between heating due to a non-thermal electron beam and in situ energy deposition in the corona. We find that both heating scenarios can reproduce the observed light curves, but our results favor non-thermal heating. In situ heating is inconsistent with the observed X-ray source morphology and always gives a height dispersion with photon energy opposite to what is observed.
description: Accepted to ApJ
Super- and sub-Eddington accreting massive black holes: A comparison of slim and thin accretion discs through study of the spectral energy distribution
Creators: name: Castello-Mor, Nuria
name: Netzer, Hagai
name: Kaspi, Shai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We employ optical and UV observations to present SEDs for two reverberation-mapped samples of super-Eddington and sub-Eddington AGN with similar luminosity distributions. The samples are fitted with accretion disc models in order to look for SED differences that depend on the Eddington ratio. The fitting takes into account measured BH mass and accretion rates, BH spin and intrinsic reddening of the sources. All objects in both groups can be fitted by thin AD models over the range 0.2-1$\,μ$m with reddening as a free parameter. The intrinsic reddening required to fit the data are relatively small, $E(B-V)\leq0.2$~mag, except for one source. Super-Eddington AGN seem to require more reddening. The distribution of $E(B-V)$ is similar to what is observed in larger AGN samples. The best fit disc models recover very well the BH mass and accretion for the two groups. However, the SEDs are very different, with super-Eddington sources requiring much more luminous far-UV continuum. The exact amount depends on the possible saturation of the UV radiation in slim discs. In particular, we derive for the super-Eddington sources a typical bolometric correction at 5100Å of 60-150 compared with a median of $\sim$20 for the sub-Eddington AGN. The measured torus luminosity relative to $λL_λ(5100Å$) are similar in both groups. The $α_{OX}$ distribution is similar too. However, we find extremely small torus covering factors for super-Eddington sources, an order of magnitude smaller than those of sub-Eddington AGN. The small differences between the groups regarding the spectral range 0.2-22$\,μ$m, and the significant differences related to the part of the SED that we cannot observed may be consistent with some slim disc models. An alternative explanation is that present day slim-disc models over-estimate the far UV luminosity of such objects by a large amount.
description: 21 pages, 10 figures, 4 tables, Accepted for publication in MNRAS
A combined model for pseudorapidity distributions in Cu-Cu collisions at BNL-RHIC energies
Creators: name: Jiang, Zhjin
name: Wang, Jie
name: Huang, Yan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The charged particles produced in nucleus-nucleus collisions come from leading particles and those frozen out from the hot and dense matter created in collisions. The leading particles are conventionally supposed having Gaussian rapidity distributions normalized to the number of participants. The hot and dense matter is assumed to expand according to the unified hydrodynamics, a hydro model which unifies the features of Landau and Hwa-Bjorken model, and freeze out into charged particles from a space-like hypersurface with a proper time of Tau_FO . The rapidity distribution of this part of charged particles can be derived out analytically. The combined contribution from both leading particles and unified hydrodynamics is then compared against the experimental data performed by BNL-RHIC-PHOBOS Collaboration in different centrality Cu-Cu collisions at sqrt(s_NN)=200 and 62.4 GeV, respectively. The model predictions are in well consistent with experimental measurements.
description: 12 pages, 2 figures, 1 table, International Journal of Modern Physics E/2016. arXiv admin note: substantial text overlap with arXiv:1602.01394
New analytical forms of wave function in coordinate space and tensor polarization of deuteron
Creators: name: Zhaba, V. I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Numerically coefficients of the new analytical forms for deuteron wave function in coordinate space for NijmI, NijmII, Nijm93, Reid93 and Argonne v18 potentials are designed. The obtained wave functions do not contain superfluous knots. The designed parameters of a deuteron well agree with the experimental and theoretical data. The tensor polarization t20 designed on wave functions is proportionate to earlier published outcomes.
description: 9 pages, 4 figures, 6 tables