cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Signature metabolic profiles using targeted metabolomics
Creators: name: Tabea Wiedmer
name: Eirini Christodoulaki
name: Sabrina Lindinger
name: Iciar Serrano
name: Christoph Bueschl
name: Thomas Hannich
Publisher: name: Zenodo
Year: 2022

description: Robust identification and quantification using LC/GC-MS for some 180 central metabolites
description: RESOLUTE has received funding from the Innovative Medicines Initiative 2 Joint Undertaking under grant agreement No 777372. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation programme and EFPIA. This article reflects only the authors' views and neither IMI nor the European Union and EFPIA are responsible for any use that may be made of the information contained therein.
Site Dilution in the Half-Filled One-Band Hubbard Model: Ring Exchange, Charge Fluctuations and Application to La2Cu_{1-x}(Mg/Zn)_xO4
Creators: name: Delannoy, J. -Y. P.
name: Del Maestro, A. G.
name: Gingras, M. J. P.
name: Holdsworth, P. C. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the ground state quantum spin fluctuations around the Néel ordered state for the one-band ($t,U$) Hubbard model on a site-diluted square lattice. An effective spin Hamiltonian, $H_{\rm s}^{(4)}$, is generated using the canonical transformation method, expanding to order $t(t/U)^3$. $H_{\rm s}^{(4)}$ contains four-spin ring exchange terms as well as second and third neighbor bilinear spin-spin interactions. Transverse spin fluctuations are calculated to order $1/S$ using a numerical real space algorithm first introduced by Walker and Walsteadt. Additional quantum charge fluctuations appear to this order in $t/U$, coming from electronic hopping and virtual excitations to doubly occupied sites. The ground state staggered magnetization on the percolating cluster decreases with site dilution $x$, vanishing very close to the percolation threshold. We compare our results in the Heisenberg limit, $t/U \to 0$, with quantum Monte Carlo (QMC) results on the same model and confirm the existence of a systematic $x$-dependent difference between $1/S$ and QMC results away from $x=0$. For finite $t/U$, we show that the effects of both the ring exchange and charge fluctuations die away rapidly with increasing $t/U$. We use our finite $t/U$ results to make a comparison with results from experiments on La$_2$Cu$_{1-x}$(Mg/Zn)$_x$O$_4$.
description: 21 pages, 2 columns. 13 figures
Editorial 4/2017: Kreativität/Ko-Kreativität
Creators: name: Schmoelz, Alexander
name: Barberi, Alessandro
name: Ollinger, Isabella
name: Krause, Sabine
Publisher: name: Medienimpulse
Year: 2018

description: Medienimpulse, Bd. 55 Nr. 4 (2017): 4/2017 - Kreativität/Ko-Kreativität
New infrared spectral indices of luminous cold stars: from early K to M-types
Creators: name: Messineo, Maria
name: Figer, Donald F.
name: Kudritzki, Rolf-Peter
name: Zhu, Qingfeng
name: Menten, Karl M.
name: Ivanov, Valentin D.
name: Chen, C. -H. Rosie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present infrared spectral indices (1.0-2.3 um) of Galactic late-type giants and red supergiants (RSGs). We used existing and new spectra obtained at resolution power R=2000 with SpeX on the IRTF telescope. While a large CO equivalent width (EW), at 2.29 um ([CO, 2.29]>45 AA) is a typical signature of RSGs later than spectral type M0, [CO] of K-type RSGs and giants are similar. In the [CO, 2.29] versus [Mg I, 1.71] diagram, RSGs of all spectral types can be distinguished from red giants, because the Mg I line weakens with increasing temperature and decreasing gravity. We find several lines that vary with luminosity, but not temperature: Si I (1.59 um), Sr (1.033 um), Fe+Cr+Si+CN (1.16 um), Fe+Ti (1.185 um), Fe+Ti (1.196 um), Ti+Ca (1.28 um), and Mn (1.29 um). Good markers of CN enhancement are the Fe+Si+CN line at 1.087 um and CN line at 1.093 um. Using these lines, at the resolution of SpeX, it is possible to separate RSGs and giants. Contaminant O-rich Mira and S-type AGBs are recognized by strong molecular features due to water vapor features, TiO band heads, and/or ZrO absorption. Among the 42 candidate RSGs that we observed, all but one were found to be late-types. 21 have EWs consistent with those of RSGs, 16 with those of O-rich Mira AGBs, and one with an S-type AGB. These infrared results open new, unexplored, potential for searches at low-resolution of RSGs in the highly obscured innermost regions of the Milky Way.
description: 48 pages, 25 figures, accepted for publication in The Astronomical Journal
CIFRA National Survey: Uruguay November 2020
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Main problems in Uruguay; Main problem in the municipality; President Luis Lacalle Pou job approval; Coronavirus/COVID19; feeling toward political leaders; Oscar Andrade; Beatriz Argimón; Pedro Bordaberry; Jorge Larrañaga; Julio Marí a Sanguinetti; Tabaré Vázquez; Ernesto Talvi; went on vacation last summer; intend to go on vacation this summer; carnival; party sympathies; 2019 general election; vote for or against parties; Senator Maonica Xavier job approval; Senator Pedro Bordaberry job approval; Senator Rafael Michelini job approval; Laura Raffo; Carolina Cosse; Mario Bergara; Guido Manini Ríos; Intendent-elect job approval; Law of Urgent Consideration; police job approval. National Agency for Research and Innovation (ANII) Collection.
Electric field noise in a high-temperature superconducting surface ion trap
Creators: name: Holz, Philip C.
name: Lakhmanskiy, Kirill
name: Rathje, Dominic
name: Schindler, Philipp
name: Colombe, Yves
name: Blatt, Rainer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Scaling up trapped-ion quantum computers requires new trap materials to be explored. Here, we present experiments with a surface ion trap made from the high-temperature superconductor YBCO, a promising material for future trap designs. We show that voltage noise from superconducting electrode leads is negligible within the sensitivity $S_V=9\times 10^{-20}\,\mathrm{V}^2\mathrm{Hz}^{-1}$ of our setup, and for lead dimensions typical for advanced trap designs. Furthermore, we investigate the frequency and temperature dependence of electric field noise above a YBCO surface. We find a $1/f$ spectral dependence of the noise and a non-trivial temperature dependence, with a plateau in the noise stretching over roughly $60\,\mathrm{K}$. The onset of the plateau coincides with the superconducting transition, indicating a connection between the dominant noise and the YBCO trap material. We exclude the YBCO bulk as origin of the noise and suggest further experiments to decide between the two remaining options explaining the observed temperature dependence: noise screening within the superconducting phase, or surface noise activated by the YBCO bulk through some unknown mechanism.
description: 15 pages, 12 figures
The rovibrational Aharonov-Bohm effect
Creators: name: Rawlinson, Jonathan I.
name: Fábri, Csaba
name: Császár, Attila G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Another manifestation of the Aharonov-Bohm effect is introduced to chemistry, in fact to nuclear dynamics and high-resolution molecular spectroscopy. As demonstrated, the overall rotation of a symmetric-top molecule influences the dynamics of an internal vibrational motion in a way that is analogous to the presence of a solenoid carrying magnetic flux. To a good approximation, the low-energy rovibrational energy-level structure of the quasistructural molecular ion H5+ can be understood entirely in terms of this effect.
Predicting Different Types of Subtle Toxicity in Unhealthy Online Conversations
Creators: name: Gilda, Shlok
name: Silva, Mirela
name: Giovanini, Luiz
name: Oliveira, Daniela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This paper investigates the use of machine learning models for the classification of unhealthy online conversations containing one or more forms of subtler abuse, such as hostility, sarcasm, and generalization. We leveraged a public dataset of 44K online comments containing healthy and unhealthy comments labeled with seven forms of subtle toxicity. We were able to distinguish between these comments with a top micro F1-score, macro F1-score, and ROC-AUC of 88.76%, 67.98%, and 0.71, respectively. Hostile comments were easier to detect than other types of unhealthy comments. We also conducted a sentiment analysis which revealed that most types of unhealthy comments were associated with a slight negative sentiment, with hostile comments being the most negative ones.
Ray-tracing through the Millennium Simulation: Born corrections and lens-lens coupling in cosmic shear and galaxy-galaxy lensing
Creators: name: Hilbert, S.
name: Hartlap, J.
name: White, S. D. M.
name: Schneider, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We study the accuracy of various approximations to cosmic shear and weak galaxy-galaxy lensing and investigate effects of Born corrections and lens-lens coupling. We use ray-tracing through the Millennium Simulation to calculate various cosmic-shear and galaxy-galaxy-lensing statistics. We compare the results from ray-tracing to semi-analytic predictions. We find: (i) The linear approximation provides an excellent fit to cosmic-shear power spectra as long as the actual matter power spectrum is used as input. Common fitting formulae, however, strongly underestimate the cosmic-shear power spectra. Halo models provide a better fit to cosmic shear-power spectra, but there are still noticeable deviations. (ii) Cosmic-shear B-modes induced by Born corrections and lens-lens coupling are at least three orders of magnitude smaller than cosmic-shear E-modes. Semi-analytic extensions to the linear approximation predict the right order of magnitude for the B-mode. Compared to the ray-tracing results, however, the semi-analytic predictions may differ by a factor two on small scales and also show a different scale dependence. (iii) The linear approximation may under- or overestimate the galaxy-galaxy-lensing shear signal by several percent due to the neglect of magnification bias, which may lead to a correlation between the shear and the observed number density of lenses. We conclude: (i) Current semi-analytic models need to be improved in order to match the degree of statistical accuracy expected for future weak-lensing surveys. (ii) Shear B-modes induced by corrections to the linear approximation are not important for future cosmic-shear surveys. (iii) Magnification bias can be important for galaxy-galaxy-lensing surveys.
description: version taking comments into account
title: La stessa unità di misura di ciò che è rettilineo e ciò che è curvilineo
Creators: name: De Felice, Federica
Publisher: name: Max-Planck-Gesellschaft zur Förderung der Wissenschaften
Year: 2020

description: Prima proposizione
Seconda proposizione
Terza proposizione
Note a piè pagina
Vorsprung durch (digitale) Technik?
Creators: name: Burghardt, Lars
name: Knauf, Daniel
Publisher: name: Medienimpulse
Year: 2017

description: Beobachtung und Dokumentation von kindlichen Verhaltensweisen und kindlicher Entwicklung bilden innerhalb institutioneller Betreuungssettings eine Kernaufgabe von frühpädagogischen Fachkräften. Die Bildungs- und Entwicklungsverläufe der Kinder werden häufig mit der Dokumentationsform Portfolio festgehalten und bilden eine Gesprächs- sowie Reflexionsgrundlage für Fachkräfte und Eltern. Der Prozess der Portfolioerstellung erweist sich in der Praxis jedoch oft als vielschrittig und zeitaufwendig. Verschlankungen dieses Prozesses werden sich von digitalen Portfolios erhofft, welche mittels Apps für Tablet-PCs erstellt werden können. Der vorliegende Beitrag greift auf eine Fragebogenerhebung zurück und liefert erste empirische Ergebnisse zu den Potenzialen des digitalen Beobachtens und Dokumentierens in Kindertagesstätten. Deutliche Vorteile gegenüber der klassischen Portfolioarbeit liegen in der schnellen Erstellung von Portfoliobeiträgen und in vielfältigeren Nutzungsmöglichkeiten.
description: Medienimpulse, Bd. 55 Nr. 4 (2017): 4/2017 - Kreativität/Ko-Kreativität
title: Bericht zum archäologischen Survey in der Gemeinde Pfaffing 2016
title: Mnr. 50024.16.02
titleType: Subtitle
Creators: name: Schörner, Günther
name: Hagmann, Dominik
name: Ployer, René
name: Langendorf, Alarich
name: Weitlaner, Romina
Publisher: name: Berger
Year: 2019
Subjects: Roman Rural Landscapes
Römische Archäologie
ländliche Besiedlung
Oberösterreich
Provinzialrömische Archäologie
Pfaffing
Survey
villa rustica
Mörasing
Hausham
Fischham
Modeling Roman Rural Landscapes
ÖFOS 2012, Classical archaeology
ÖFOS 2012, Klassische Archäologie
ÖFOS 2012, Virtual archeology
ÖFOS 2012, Virtuelle Archäologie
ÖFOS 2012, Digital humanities
ÖFOS 2012, Digital Humanities

description: Im Rahmen des Projektes „Modeling Roman Rural Landscapes“ des Instituts für Klassische Archäologie der Universität Wien, das zur exemplarischen Erforschung der ländlichen Besiedelung in ausgewählten Bereichen der Provinz Noricum auf dem Gebiet des heutigen Bundeslandes Oberösterreich mittels non-invasiver Methoden dient, wurde im Kontext der forschungsgeleiteten Lehre am 18.11.2016 im Rahmen eines Kurses ein Linesurvey durch Lehrende und Studierende im Gebiet der Gemeinde Pfaffing durchgeführt. Der Survey fand am 18.11.2016 statt. Die Felder befanden sich in westlicher Richtung in etwa 450, 1000 und 1800 m Entfernung von der ergrabenen villa rustica Pfaffing auf dem Haushamer Feld. Die Ergebnisse sind als charakteristisch für ländliche Zonen zu bezeichnen, resultierend aus typischen Aktivitäten wie Düngung und Abfallentsorgung des Unrats auf dem Feld.
description: Diese Version zur Langzeitarchivierung weist Unterschiede zur Druckfassung auf: Verbesserung des Kartenmaterials. Die im Text abgebildeten Karten sind für einen Druck in DIN-A4 ausgelegt.
Mittel zum Zweck
Creators: name: Damberger, Thomas
Publisher: name: Medienimpulse
Year: 2015

description: Wir leben in einer Mixed Reality , einer Welt, in der Realität und Virtualität bereits ineinander übergegangen sind. In dieser Mixed Reality ist Lernen zu Augmented Learning geworden. Es erscheint als Mittel zum Zweck und der Zweck ist das Menschliche am Menschen. Zugleich ist der Mensch in der Mixed Reality von einer Entfremdung bedroht, der die Medienpädagogik entgegenzuwirken hat.
description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
Über Differenzen und Machtverhältnisse in medienpädagogischen Diskurszusammenhängen
Creators: name: Schrammel, Sabrina
Publisher: name: Medienimpulse
Year: 2015

description: Der vorliegende Beitrag untersucht Diskurse, die an den österreichischen Pädagogischen Hochschulen hinsichtlich der organisationsspezifischen Positionierung zu medienpädagogischen Fragen angesichts von Computer- und Internettechnologie geführt werden. Diese werden in Hinblick auf diskursiv (re-)produzierte Differenzen untersucht und als Machtverhältnisse analysiert. Deren systematisches Verstehen bietet Potenzial für Kritik und machtvolle Mitgestaltung von Diskursen.
description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
E-Learning als Fachdidaktik der Medienerziehung
Creators: name: Ruge, Wolfgang B.
Publisher: name: Medienimpulse
Year: 2015

description: Nach der Diagnose, dass sich die Medienpädagogik als so heterogen erweist, dass von ihr eigentlich im Plural gesprochen werden muss, werden kursorisch gefundene Verbindungen zwischen den einzelnen Medienpädagogiken verglichen. Zum Abschluss wird argumentiert, dass e-learning wesentlicher Bestandteil einer auch als solchen benannten Fachdidaktik der Medienerziehung sein sollte.
description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
CIFRA National Survey: Uruguay July 2020
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Main problems in Uruguay; Main problem in the municipality; Intendent job approval; President Luis Lacalle Pou job approval; feeling toward political leaders; Luis Lacalle Pou; Mario Bergara; Beatriz Argimón; José Mujica; Jorge Larrañaga; Ernesto Talvi; Guido Manini Ríos; Tabaré Vázquez; management of municipal finances; satisfaction with municipal services; sanitation; public transportation; maintenance of public spaces; traffic control; road/sidewalk conditions; the economy; unemployment; use of computers/smart phones; coronavirus/COVID19; party sympathies; 2019 general election; vote for or against parties; Frente Amplio (a leftist political coalition); National Party; Colorado Party; Cabildo Abierto (a right-wing political party); Independent Party; People's Party; Ecologist Radical Intransigent Party. confidence in information from government reports; confidence in information from media outlets; confidence in information on social media; government support to companies vs. to workers; legal euthanasia. National Agency for Research and Innovation (ANII) Collection.
Generalization of the Born rule
Creators: name: Galvan, Bruno
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A new formulation of quantum mechanics is proposed based on a new principle that can be considered a generalization of the Born rule. The principle is composed of a mathematical expression and an associated interpretation, and establishes a correlation between the positions of a particle at two different times. Under reasonable conditions for the wave function, this correlation implies that the particles follow quasi-classical trajectories. It is also shown that the Born rule is equivalent to a particular case of the new principle. These features allow the principle to provide a unified explanation of the results of the statistical experiments and of the quasi-classical macroscopic evolution. There is a strong analogy between the new quantum principle and a probabilistic principle which is necessary to derive empirical predictions from the mathematical formalism of probability theory. This principle is referred to by some authors as Cournot's principle, while other authors use the equivalent notion of typicality. In this paper probability theory and quantum mechanics are formulated in such a way as to explicitly include the two principles and to emphasize the very similar conceptual structure of the two theories.
description: 29 pages, 3 figures. To appear in Physical Review A, a section added and some minor improvements
A near-infrared interferometric survey of debris disc stars. II. CHARA/FLUOR observations of six early-type dwarfs
Creators: name: Absil, O.
name: Di Folco, E.
name: Merand, A.
name: Augereau, J. -C.
name: Foresto, V. Coude du
name: Defrere, D.
name: Kervella, P.
name: Aufdenberg, J. P.
name: Desort, M.
name: Ehrenreich, D.
name: Lagrange, A. -M.
name: Montagnier, G.
name: Olofsson, J.
name: Brummelaar, T. A. ten
name: McAlister, H. A.
name: Sturmann, J.
name: Sturmann, L.
name: Turner, N. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-precision interferometric observations of six early-type main sequence stars known to harbour cold debris discs have been obtained in the near-infrared K band with the FLUOR instrument at the CHARA Array. The measured squared visibilities are compared to the expected visibility of the stellar photospheres based on theoretical photospheric models taking into account rotational distortion, searching for potential visibility reduction at short baselines due to circumstellar emission. Our observations bring to light the presence of resolved circumstellar emission around one of the six target stars (zeta Aql) at the 5 sigma level. The morphology of the emission source cannot be directly constrained because of the sparse spatial frequency sampling of our interferometric data. Using complementary adaptive optics observations and radial velocity measurements, we find that the presence of a low-mass companion is a likely origin for the excess emission. The potential companion has a K-band contrast of four magnitudes, a most probable mass of about 0.6 Msun, and is expected to orbit between about 5.5 AU and 8 AU from its host star assuming a purely circular orbit. Nevertheless, by adjusting a physical debris disc model to the observed Spectral Energy Distribution of the zeta Aql system, we also show that the presence of hot dust within 10 AU from zeta Aql, producing a total thermal emission equal to 1.69 +- 0.31% of the photospheric flux in the K band, is another viable explanation for the observed near-infrared excess. Our re-interpretation of archival near- to far-infrared photometric measurements shows however that cold dust is not present around zeta Aql at the sensitivity limit of the IRS and MIPS instruments onboard Spitzer, and urges us to remove zeta Aql from the category of bona fide debris disc stars.
description: 14 pages, accepted for publication in A&A
Ideologiekritik des E-Learnings
Creators: name: Kaiser-Müller, Katharina
Publisher: name: Medienimpulse
Year: 2015

description: Vor etwa sieben Jahren hat das damalige Bundesministerium für Unterricht, Kunst und Kultur (bm:ukk), das seit 2014 Bundesministerium für Bildung und Frauen (BMBF) genannt wird, verschiedene Maßnahmen im Blick auf neuen Medien – insbesondere im Blick auf das E-Learning – gesetzt, um einen Beitrag zur Vorbereitung der Lernenden auf eine Informations- und Wissensgesellschaft zu leisten. E-Learning wurde als Erfolgsfaktor für die Zukunft gesehen und mit der Begründung, es fördere das individuelle und selbst gesteuerte Lernen, gefördert. Die zentrale Frage ist dabei: Welchen Nutzen hat die Einführung von E-Learning? In diesem Artikel wird dahingehend aufgezeigt, dass E-Learning nicht wegen pädagogischem Bedarf, sondern durch ministeriell gesetzte Maßnahmen eingeführt wurde und dadurch – wenn auch nicht bewusst und schon gar nicht als solches kommuniziert – neoliberale Strukturen durchgesetzt wurden. Die Einführung von E-Learning hat somit für deren Akzeptanz gesorgt.
description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
Coulomb Correlations and the Wigner-Mott Transition
Creators: name: Camjayi, A.
name: Haule, K.
name: Dobrosavljevic, V.
name: Kotliar, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strong correlation effects, such as a dramatic increase in the effective mass of the carriers of electricity, recently observed in the low density electron gas have provided spectacular support for the existence of a sharp metal-insulator transitions in dilute two dimensional electron gases. Here we show that strong correlations, normally expected only for narrow integer filled bands, can be effectively enhanced even far away from integer filling, due to incipient charge ordering driven by non-local Coulomb interactions. This general mechanism is illustrated by solving an extended Hubbard model using dynamical mean-field theory. Our findings account for the key aspects of the experimental phase diagram, and reconcile the early view points of Wigner and Mott. The interplay of short range charge order and local correlations should result in a three peak structure in the spectral function of the electrons which should be observable in tunneling and optical spectroscopy.
description: 5 pages, 5 figures. Accepted in Nature Physics
Spatially resolving the hot CO around the young Be star 51 Ophiuchi
Creators: name: Tatulli, E.
name: Malbet, F.
name: Menard, F.
name: Gil, C.
name: Testi, L.
name: Natta, A.
name: Kraus, S.
name: Stee, P.
name: Robbe-Dubois, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: 51 Oph is one of the few young Be stars displaying a strong CO overtone emission at 2.3 microns in addition to the near infrared excess commonly observed in this type of stars. In this paper we first aim to locate the CO bandheads emitting region. Then, we compare its position with respect to the region emitting the near infrared continuum. We have observed 51 Oph with AMBER in low spectral resolution (R=35), and in medium spectral resolution (R=1500) centered on the CO bandheads. The medium resolution AMBER observations clearly resolve the CO bandheads. Both the CO bandheads and continuum emissions are spatially resolved by the interferometer. Using simple analytical ring models to interpret the measured visibilities, we find that the CO bandheads emission region is compact, located at $0.15_{-0.04}^{0.07}$AU from the star, and that the adjacent continuum is coming from a region further away $0.25_{-0.03}^{0.06}$AU. These results confirm the commonly invoked scenario in which the CO bandheads originate in a dust free hot gaseous disk. Furthermore, the continuum emitting region is closer to the star than the dust sublimation radius (by at least a factor two) and we suggest that hot gas inside the dust sublimation radius significantly contributes to the observed 2 $μ$m continuum emission.
description: 5 pages, 5 figures
Rezension: World Wide War: Angriff aus dem Internet/Cyber War: The Next Threat to National Security and What to Do About It
Creators: name: Stingeder, Karl H.
Publisher: name: Medienimpulse
Year: 2015

description: Je breiter der Infrastruktur-Anschluss eines Landes an das World Wide Web, desto größer die Angriffsfläche im Fall eines Netzkriegs. Die Messung der virtuellen Kampfkraft erfolgt auf Basis von drei Faktoren: Offensivkraft, Defensivfähigkeit und die Abhängigkeit vom Internet. Die USA verfügen als "Supermacht" zwar über die größte virtuelle Offensivkraft, gleichzeitig steht die Nation Cyberangriffen sehr verwundbar gegenüber. Dagegen sind in Nordkorea kaum Systeme vom Internet abhängig. Obwohl die offensiven Netzkriegskapazitäten Nordkoreas verhältnismäßig gering sind, präsentiert sich die virtuelle Kampfkraft des nordkoreanischen Regimes in Bestform. Die Verwundbarkeit ziviler Systeme, insbesondere der Energieversorgung, muss in direkter Korrelation mit deren Anknüpfung an das Internet betrachtet werden.
description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
Observation of negative impulse velocity in free space
Creators: name: Budko, Neil V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Since the 1983 definition of the speed of light in vacuum as a fundamental constant with the exact value of 299792458 m/s the question remains as to what apart from the wavefront travels at that speed. It is commonly assumed that the entire wave-packet or an impulse of the electromagnetic radiation in free space does. Here it is shown, both theoretically and experimentally, that there exists a region close to the source, where, while the wave-front travels at the speed of light, the individual impulses comprising the body of the wave-packet appear to slow down and even go backwards in time. This three-dimensional near-field late-time effect may also explain some of the free-space superluminal measurements.
description: 4 pages, 3 figures, typo in eq.(2) corrected
Rezension: Grenzwerte im Spiel. Die Aufführungspraxis der britischen Kompanie >Forced Entertainment< – Eine Ethnografie
Creators: name: Lenhart, Johanna
Publisher: name: Medienimpulse
Year: 2015

description: Medienimpulse, Bd. 53 Nr. 1 (2015): 1/2015 - Medienpädagogik und E-Learning
Wie österreichische Printmedien gegenwärtig über "Schlepperei" und "Fluchthilfe" berichten – und wie sie berichten sollten
Creators: name: Hausjell, Fritz
Publisher: name: Medienimpulse
Year: 2016

description: Medienimpulse, Bd. 54 Nr. 1 (2016): 1/2016 - Printmedien in Österreich
Die Sozialreportage – Ihre Bedeutung im österreichischen Printjournalismus nach der Jahrtausendwende
Creators: name: Scheer, Esther
Publisher: name: Medienimpulse
Year: 2016

description: Ziel dieser Arbeit ist es, die Sozialreportage und ihre Bedeutung in den österreichischen Printmedien nach dem Jahr 2000 zu ermitteln. Im Rahmen dieser Untersuchung soll der Stellenwert des anwaltschaftlichen und investigativen Journalismus ermittelt werden. Im Hinblick auf die gesellschaftspolitischen wie medialen Umbrüche wird mithilfe einer Themenanalyse der thematische Fokus der beiden Wochenmagazine FALTER und NEWS erforscht. Die vorliegende Arbeit geht der Forschungsfrage nach, welche sozialkritischen Themen in welchem Ausmaß zur Verwendung kamen. Keine Gattung vermag es so stark und konsequent die basisdemokratischen Werte einer Gesellschaft einzufordern wie es der anwaltschaftliche und investigative Journalismus tut. Daher eignet sich die Sozialreportage bestens als Spiegel der Werte, die sich die Gesellschaft selbst gibt.
description: Medienimpulse, Bd. 54 Nr. 1 (2016): 1/2016 - Printmedien in Österreich
Smooth Fano four folds in Gorenstein formats
Creators: name: Qureshi, Muhammad Imran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J45, 14J35, 14Q15

description: We construct some new deformation families of four-dimensional Fano manifolds of index $1$ in some known classes of Gorenstein formats. These families have explicit descriptions in terms of equations, defining their image under the anti-canonical embedding in some weighted projective space. The constructed families have relatively smaller anti-canonical degrees than most other known families of smooth Fano 4-folds.
description: To appear in Bull. Aust. Math. Soc., 2 Tables, 1 Figure
Chaotic dynamics of pulsating spheres orbiting black holes
Creators: name: Rodrigues, Fernanda de F.
name: Mosna, Ricardo A.
name: Vieira, Ronaldo S. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the chaotic dynamics of spinless extended bodies in a wide class of spherically symmetric spacetimes, which encompasses black-hole scenarios in many modified theories of gravity. We show that a spherically symmetric pulsating ball may have chaotic motion in this class of spacetimes. The cases of the Reissner-Nordstr{ö}m and Ay{ó}n-Beato-Garc{í}a black holes are analyzed in detail. The equations of motion for the extended bodies are obtained according to Dixon's formalism, up to quadrupole order. Then, we use Melnikov's method to show the presence of homoclinic intersections, which imply chaotic behavior, as a consequence of our assumption that the test body has an oscillating radius.
description: 20 pages, 3 figures. To appear in GRG
Kreative digitale Arbeit mit Kindern in einer viertägigen offenen Werkstatt
Creators: name: Schön, Sandra
name: Ebner, Martin
name: Reip, Ingrid
Publisher: name: Medienimpulse
Year: 2018

description: Die Veranstaltung "Maker Days for Kids" war eine kreative digitale Werkstatt, die im April 2015 vier Tage lang für Kinder von 10 bis 14 Jahren geöffnet hatte. Aufbauend auf einer kurzen Einleitung zur Maker-Bewegung werden das Konzept der Veranstaltung, z. B. die Einführungsworkshops, die Rolle der Peer-TutorInnen, Challenges und Selbstlernmaterialien, sowie Erfahrungen damit vorgestellt. Durch eine detaillierte Erfassung der Anwesenheit, Teilnahme an unterschiedlichen Angeboten und der Nutzung der Infrastruktur ist es zudem möglich, Besonderheiten von SchülerInnen unterschiedlicher Schularten und von Buben und Mädchen genauer zu betrachten. Insgesamt haben 69 Kinder an der Vorbereitung bzw. bei der offenen Werkstatt teilgenommen und dabei u. a. Traumhäuser modelliert und am 3D-Drucker ausgedruckt, Games programmiert oder LED-Lampen in Acrylbildern montiert. Mehr zum Projekt: http :// makerdays . wordpress . com
description: Medienimpulse, Bd. 54 Nr. 1 (2016): 1/2016 - Printmedien in Österreich
Coarticulation and lipreading
Creators: name: Pichora-Fuller, Margaret Kathleen
Publisher: name: University of British Columbia
Year: 2010

description: This study investigates the relationship of articulatory variation to the visual perception of phonemes. Normal hearing and hearing-impaired subjects who had demonstrated good lipreading skills on a pilot test were selected to lipread videotaped tests under visual only conditions. Eighty-one V₁CV₂ utterances where V could be /I,æ,u/ and C could be /p,t,k, tϚ, f, Θ, s,Ϛ, w/ were spoken by a speaker who had been selected in a pilot study as being easy to lipread. The 81 stimuli were used to construct three test tapes, one where the speaker spoke slowly, one where she spoke faster, and one in which the fast tape was reversed. Coarticulatory influences were expected to be present in these stimuli. Lipreading scores and measurements of the articulations were compared in an effort to explain some of the variability in the visual perception of phonemes which was suggested by existing literature. Lipreading performance was nearly perfect for /p,f,w, Θ,u/ on all tapes in all disyllables. Lipreading performance on /t,k,tϚ,Ϛ,s,i,æ/ varied depending on phonological context, especially on the fast test tape. Variation in the identification of the less visually dominant phonemes could be directly related to coarticulatory effects revealed in the measurement of articulatory parameters (vertical and horizontal lip opening) of the visual signal. Improvement in lipreading ability throughout the task was evidenced by normal hearing subjects. The features labial, rounded, and alveolar or palatal place of articulation transmitted more information to lipreaders than did the feature continuant. It was concluded that variability in articulatory parameters resulting from coarticulatory effects in faster speech increases lipreading difficulty, especially initially. Lipreaders are sensitive to subphonemic and subvisemic variations.
Models of Mastery Learning for Computing Education
Creators: name: Szabo, Claudia
name: Parker, Miranda C.
name: Friend, Michelle
name: Jeuring, Johan
name: Kohn, Tobias
name: Malmi, Lauri
name: Sheard, Judithe
Publisher: name: Association for Computing Machinery (ACM)
Year: 2025

description: The application of mastery learning, where students progress through their learning in a self-paced manner until they have mastered specific concepts, is considered appealing for teaching introductory programming courses. Despite its growing popularity in computing and its extensive use in other disciplines, there is no overview of the design of courses that use mastery learning. In this position paper, we present an overview of five mastery learning models and discuss examples of how these can be applied in practice, both in foundational programming as well as more advanced courses. Our analysis focuses on the student progression through the course, the assessment structure, and the support for self-paced learning, including for struggling students. This work provides a greater understanding of mastery learning and its application in a computing education context.
CIFRA National Survey: Uruguay March 2020
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: President Tabaré Vázquez job approval handling of the transition of power; Law of Urgent Consideration; public utility rate increases; Multicolor Coalition; teacher strikes; victim of theft in the last year; victim of assault in the last year; feeling toward political leaders; Luis Lacalle Pou; Beatriz Argimón; Jorge Larrañaga; Ernesto Talvi; Guido Manini Ríos; Tabaré Vázquez; Intendent job approval; the economy; unemployment; party sympathies; 2019 general election; vote for or against parties; Frente Amplio (a leftist political coalition); National Party; Colorado Party; Cabildo Abierto (a right-wing political party); Independent Party; People's Party; Ecologist Radical Intransigent Party. National Agency for Research and Innovation (ANII) Collection.
Die Dagstuhl-Erklärung
Creators: name: Missomelius, Petra
Publisher: name: Medienimpulse
Year: 2016

description: Die MEDIENIMPULSE präsentieren die in Dagstuhl im Februar 2016 erarbeitete Erklärung zur Medienbildung: Bildung in der digital vernetzten Welt.
description: Medienimpulse, Bd. 54 Nr. 1 (2016): 1/2016 - Printmedien in Österreich
Robust strategies for lossy quantum interferometry
Creators: name: Maccone, Lorenzo
name: De Cillis, Giovanni
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a simple multiround strategy that permits to beat the shot noise limit when performing interferometric measurements even in the presence of loss. In terms of the average photon number employed, our procedure can achieve twice the sensitivity of conventional interferometric ones in the noiseless case. In addition, it is more precise than the (recently proposed) optimal two-mode strategy even in the presence of loss.
description: 4 pages, 3 figures
(Medien-)pädagogische Herausforderungen der Arbeit mit Schüler*innen auf einem Wiki
Creators: name: Drewes, Jürgen
Publisher: name: Medienimpulse
Year: 2017

description: Medienimpulse, Bd. 55 Nr. 1 (2017): 1/2017 - Tätigkeitsfelder schulischer MedienpädagogInnen
Superstrings on AdS_4 x CP^3 as a Coset Sigma-model
Creators: name: Arutyunov, Gleb
name: Frolov, Sergey
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: According to the recent proposal by Aharony, Bergman, Jafferis and Maldacena the N=6 supersymmetric Chern-Simons theory in three dimensions has a 't Hooft limit whose holographic dual is described by type IIA superstings on AdS_4 x CP^3 background. We argue that the Green-Schwarz action for type IIA string theory on AdS_4 x CP^3 with kappa-symmetry partially fixed can be understood as a coset sigma-model on the same space supplied with a proper Wess-Zumino term. We construct the corresponding sigma-model Lagrangian and show that it is invariant under a local fermionic symmetry which for generic bosonic string configurations allows one to remove 8 out of 24 fermionic degrees of freedom. The remaining 16 fermions together with their bosonic partners should describe the physical content of AdS_4 x CP^3 superstring. As further evidence, we demonstrate that in the plane-wave limit the quadratic action arising from our model reproduces the one emerging from the type IIA superstring. The coset sigma-model is classically integrable which opens up the possibility to investigate its dynamics in a way very similar to the case of AdS_5 x S^5 superstrings.
description: 29 pages; v2: typos corrected, refs added
Tagging photon interactions at the LHC
Creators: name: Rouby, X.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Photon interactions at the LHC result in striking final states with much lower hadronic activity in the central detectors than for pp interactions. In addition, the elastic exchange of a photon leads to a proton scattered at almost zero-degree angle. Tagging photon interactions relies on either the use of large rapidity gaps or on the detection of the scattered proton using very forward detectors. The studies related to such detectors are presented, including their characterization, their acceptance and reconstruction performance. Limitations due to the LHC beamline misalignment and possible solutions are also given.
description: 9 pages, 8 figures. Talk given at the Workshop on "High-energy photon collisions at the LHC", April 22-25, 2008, CERN, Switzerland. To appear in the proceedings
Ectoedemia (Ectoedemia) occultella
Creators: name: van Nieukerken, Erik
name: Laštůvka, Aleš
name: Laštůvka, Zdeněk
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nepticulidae
Ectoedemia
Ectoedemia occultella

description: Ectoedemia (Ectoedemia) occultella (Linnaeus) Biology. Hostplants: Betula spp., Salix pentandra L. (only northern Finland, not reared). Larvae from August to November, adults fly from May to July. Distribution. Lithuania: Ivinskis et al. 1985; Belarus: Merzheevskaja et al. 1976; Corsica: Van Nieukerken et al. 2006. J. Buszko (in litt.) observed tenanted mines in Bulgaria (see below), thus providing a new record. Material. Bulgaria: tenanted mines, Bačkovo, 20.X.2004, on Betula pendula, J. Buszko, observation.
description: Published as part of van Nieukerken, Erik, Laštůvka, Aleš & Laštůvka, Zdeněk, 2010, Western Palaearctic Ectoedemia (Zimmermannia) Hering and Ectoedemia Busck s. str. (Lepidoptera: Nepticulidae): five new species and new data on distribution, hostplants and recognition, pp. 1-82 in ZooKeys 32 (32) on page 71, DOI: 10.3897/zookeys.32.282, http://zenodo.org/record/576594
description: {"references": ["Ivinskis P, Pakalniskis S, Puplesis R (1985) Augalus Minuojantys Vabzdziai [Leafmining insects]. Mokslas, Vilnius, 1 - 240 pp.", "Merzheevskaja OI, Litvinova AN, Molchanova RV (1976) Cheshuekrylye (Lepidoptera) Belorussii. Katalog. Akademija Nauk Belorusskoj SSR, Otdel Zoologii i Parazitologii, Minsk, 132 pp.", "Nieukerken EJ van, Lastuvka A, Lastuvka Z (2006) Annotated catalogue of the Nepticulidae and Opostegidae (Lepidoptera: Nepticuloidea) of France and Corsica. Zootaxa 1216: 1 - 114. http: // www. mapress. com / zootaxa / 2006 / zt 01216 p 114. pdf."]}
CIFRA National Survey: Uruguay November 2019
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Feeling toward political leaders; Tabaré Vázquez; Luis Lacalle Pou; Daniel Martínez; Ernesto Talvi; Guido Manini Ríos; Jorge Larrañaga; Julio Marí a Sanguinetti; José Pepe Mujica; party sympathies; President Tabaré Vázquez job approval approval of Frente Amplio management of the country over the past 15 years; the economy; 2019 general election; vote for or against candidates; security reform; rate candidates as politically right or left; election results prediction; LaCalle Pou vs. Martinez impact on you personally; past voting behavoir; 2014 general election; vote for or against parties; values and characteristics of today's teenagers; scientific research in Uruguay; healthcare; housing; education; environment; industry and agriculture. National Agency for Research and Innovation (ANII) Collection.
VV Pup in a low state: secondary-star irradiation or stellar activity?
Creators: name: Mason, Elena
name: Howell, Steve B.
name: Barman, Travis
name: Szkody, Paula
name: Wickramasinghe, Dayal
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. Emission lines in polars show complex profiles with multiple components that are typically ascribed to the accretion stream, threading region, accretion spot, and the irradiated secondary-star. In low-state polars the fractional contribution by the accretion stream, and the accretion spot is greatly reduced offering an opportunity to study the effect of the secondary-star irradiation or stellar activity. We observed VV Pup during an exceptional low-state to study and constrain the properties of the line-forming regions and to search for evidence of chromospheric activity and/or irradiation. Methods. We obtained phase-resolved optical spectra at the ESO VLT+FORS1 with the aim of analyzing the emission line profile and radial velocity as a function of the orbital period. We also tailored irradiated secondary-star models to compare the predicted and the observed emission lines and to establish the nature of the line-forming regions. Results. Our observations and data analysis, when combined with models of the irradiated secondary-star, show that, while the weak low ionization metal lines (FeI and MgI) may be consistent with irradiation processes, the dominant Balmer H emission lines, as well as NaI and HeI, cannot be reproduced by the irradiated secondary-star models. We favor the secondary-star chromospheric activity as the main forming region and cause of the observed H, NaI, and He emission lines, though a threading region very close to the L1 point cannot be excluded.
description: 10 pages, 9 figures, in press on A&A
Mediennutzung und Informationsbeschaffung über Studium- bzw. Berufswahl
Creators: name: Ovcina Cajacob, Amina
name: Jansky, Ines
Publisher: name: Medienimpulse
Year: 2014

description: Diese Publikation basiert auf der Befragung von 4 125 Jugendlichen (SchülerInnen der Altersgruppe 12 bis 21 Jahre). Dafür wurden im Zeitraum vom 22. Oktober bis 12. November 2013 Jugendliche befragt, um Antworten auf folgenden Fragen zu bekommen: Welches Bild haben die Schüler vom Ingenieurberuf? Wie ist ihr allgemeines Mediennutzungsverhalten und wie beeinflussen Medien das Bild des Ingenieurs? Welche Berufe interessieren Jugendliche und wie informieren sie sich über Studien- bzw. Berufswahl? Welche Einflüsse spielen bei den Jugendlichen bezüglich der eigenen Berufs- und Studienwahl eine Rolle? Die Ergebnisse dieser umfassenden Analyse sind Grundlage für die Konzeption einer crossmedialen Sensibilisierungskampage, die zum Ziel hat, Vorurteile über den Ingenieurberuf abzubauen, Wissen und ein zeitgemässes Berufsbild zu vermitteln sowie Neugier auf ein Ingenieurstudium zu wecken.
description: Medienimpulse, Bd. 52 Nr. 2 (2014): 2/2014 - Potenziale digitaler Medienkunst