cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Study on the Kinetics of Dissolution and Reversible Hydration of Carbon Dioxide in Aqueous Solutions
Creators: name: Zhou, Miao
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Chemical
subject: Kinetics
subject: Carbon Capture

description: Microalgal CO2 fixation is an emerging technology for abating CO2 emissions. Microalgal cultures productivity is limited by CO2 transfer rates, as CO2 has low solubility in water and its dissolution is kinetically impaired. Scrubbing and hydration of CO2 into bicarbonate solution prior to feeding the cultures has been proposed to increase CO2 availability. The hydration reaction is the rate-limiting step in the CO2 dissolution process. Experiments were performed to test carbonic anhydrase (CA) and metal (oxide) nanoparticles (MNPs) as catalysts by measuring pH and conductivity changes. A model was developed to predict the reaction process over time and compared to experimental measurements. No catalytic activity was observed for MNPs under all experimental conditions evaluated. Although CA has significant catalytic activity, the mechanism controlling the reaction rate was found (experimentally and numerically) to be mass transfer limitation. Changes in reactor geometry and gas distribution were proved effective to mitigate this limitation.
From Snapshot to Snapchat
Creators: name: Christensen, Jørgen Riber
name: Hansen, Julie Cecilie
name: Larsen, Frederik Holm
name: Nielsen, Jesper Sig
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: The article asks the research question whether the ephemeral affordance of Snapchat can be characterized as a product of the panopticon or of the synopticon. To seek to answer this question a threefold approach is employed. The first is historical and it investigates the relationship between the snapshot tied to leisure (“the Kodak moment”) and Snapchat. The second is empirical, and it uses pre-existing statistics about Snapchat and a questionnaire survey carried out for this article. Finally, the article sees the Snapchat phenomenon in the light of pertinent schools of cultural theory and in the context of new social media, e.g. research about selfies, and it considers the concepts of the panopticon and the more recent concept of the synopticon.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
Topological waves guided by a glide-reflection symmetric crystal interface
Creators: name: Martínez, Julio Andrés Iglesias
name: Laforge, Nicolas
name: Kadic, Muamer
name: Laude, Vincent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A domain wall separating two different topological phases of the same crystal can support the propagation of backscattering-immune guided waves. In valley-Hall and quantum-Hall crystal waveguides, this property stems from symmetry protection and results from a topological transition at a Dirac point. Since an initially closed band gap has to open, the guidance bandwidth remains limited compared to that of wide band gap crystals. When a glide-symmetric dislocation is introduced in a 2D crystal, we show that a pair of wide-bandwidth, single-mode, and symmetry-protected guided waves appear in the bulk band gap. The 2D Zak phase changes by $π$ on either side of the interface, providing a topological invariant protected by glide-reflection symmetry at the X point of the Brillouin zone. A demonstration experiment is performed with acoustic waves in water, at ultrasonic frequencies, and shows the continuous tuning of transmission as a function of the glide parameter. The concept further extends to other types of waves, including the case of elastic waves in solids, but also of optical and electromagnetic waves.
The rationality of the moduli spaces of Coble surfaces and of nodal Enriques surfaces
Creators: name: Dolgachev, Igor
name: Kondo, Shigeyuki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove the rationality of the coarse moduli spaces of Coble surfaces and of nodal Enriques surfaces over the field of complex numbers.
description: 15 pages
When does leisure become work?
Creators: name: Torres, Ricardo Vidal
name: Heaton, Lorna
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: This article explores the tensions between game play and contributing to science within Foldit (http://fold.it/portal/), an online puzzle game and participatory science project in which participants fold proteins in novel ways. No prior scientific knowledge is required in order to play, but solutions developed by players have led to important scientific discoveries. Based on analysis of online exchanges and interviews with a number of players, we examine the tensions between the experience and pleasure of playing a game and the desire to work and contribute to scientific activity. We examine our players’ experiences in terms of Stebbins’ (1982, 2007) notion of serious leisure.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
Lyapunov exponents of random walks in small random potential: the lower bound
Creators: name: Mountford, Thomas
name: Mourrat, Jean-Christophe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 82B44, 82D30, 60K37

description: We consider the simple random walk on Z^d, d > 2, evolving in a potential of the form βV, where (V(x), x \in Z^d) are i.i.d. random variables taking values in [0,+\infty), and β > 0. When the potential is integrable, the asymptotic behaviours as β tends to 0 of the associated quenched and annealed Lyapunov exponents are known (and coincide). Here, we do not assume such integrability, and prove a sharp lower bound on the annealed Lyapunov exponent for small β. The result can be rephrased in terms of the decay of the averaged Green function of the Anderson Hamiltonian -Δ + βV.
description: 42 pages, 3 figures
What can Teacher Education Programs Learn from Community Organizations? Honouring the Perspectives of Community in a Critical Service-Learning Partnership
Creators: name: Lee, Lianne
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Education--Curriculum and Instruction
subject: Education--Higher
subject: Education--Teacher Training
subject: service-learning
subject: critical service-learning
subject: Teacher education
subject: community-engaged learning
subject: inter-sectoral collaboration
subject: implementation science

description: This critical ethnographic case study examined the perspectives of community organization staff that were involved in a community-driven service-learning partnership entitled, the Service-Learning Program for Pre-service Teachers (SLPPST). The study aimed to understand the perceived impact of the SLPPST for community organization partners (and the communities they serve) to honour and learn from a perspective that is often overlooked in service-learning literature, as well as to support teacher education programs in implementing effective, collaborative, and reciprocal service-learning programs. Drawing from critical pedagogy and implementation science, this study revealed that community-led service-learning partnerships, when designed, implemented, and evaluated through an anti-oppressive lens, can contribute to the long-term goals of community organizations. An analysis of in-depth interviews with community organization staff, researchers’ observations during site visits, and minutes from SLPPST meetings led to the development of a critical service-learning model – the WECARE model – that can help to strengthen teacher education programs’ ability to facilitate more equitable outcomes among partners of critical service-learning programs.
CO observations of water-maser post-AGB stars and detection of a high-velocity outflow in IRAS 15452-5459
Creators: name: Cerrigone, L.
name: Menten, K. M.
name: Kaminski, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many aspects of the evolutionary phase in which Asymptotic Giant Branch stars (AGB stars) are in transition to become Planetary Nebulae (PNe) are still poorly understood. An important question is how the circumstellar envelopes of AGB stars switch from spherical symmetry to the axially symmetric structures frequently observed in PNe. In many cases there is clear evidence that the shaping of the circumstellar envelopes of PNe is linked to the formation of jets/collimated winds and their interaction with the remnant AGB envelope. Because of the short evolutionary time, objects in this phase are rare, but their identification provides valuable probes for testing evolutionary models. We have observed (sub)millimeter CO rotational transitions with the APEX telescope in a small sample of stars hosting high-velocity OH and water masers. These targets are supposed to have recently left the AGB, as indicated by the presence of winds traced by masers, with velocities larger than observed during that phase. We have carried out observations of several CO lines, ranging from J=2-1 up to J=7-6. In IRAS 15452-5459 we detect a fast molecular outflow in the central region of the nebula and estimate a mass-loss rate between 1.2x10^{-4} Msun yr^{-1} (assuming optically thin emission) and 4.9x10^{-4} Msun yr^{-1} (optically thick emission). We model the SED of this target taking advantage of our continuum measurement at 345 GHz to constrain the emission at long wavelengths. For a distance of 2.5 kpc, we estimate a luminosity of 8000 Lsun and a dust mass of 0.01 Msun. Through the flux in the [CII] line (158 um), we calculate a total mass of about 12 Msun for the circumstellar envelope, but the line is likely affected by interstellar contamination.
description: 12 pages, 9 figures, accepted for publication on A&A
Existence of Ground States in the Infrared-Critial Spin Boson Model
Creators: name: Hinrichs, Benjamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review recent results on the existence of ground states for the infrared-critical spin boson model, which describes the interaction of a massless bosonic field with a two-state quantum system. Explicitly, we derive a critical coupling $λ_{\mathsf c}>0$ such that the spin boson model exhibits a ground state for coupling constants $λ$ with $|λ|<λ_{\mathsf c}$. The proof combines a Feynman-Kac-Nelson formula for the spin boson model with external magnetic field, a 1D-Ising model correlation bound and a compactness argument in Fock space. Elaborating on the connection to a long-range 1D-Ising model, we briefly discuss the conjecture that the spin boson model does not have a ground state at large coupling. This note is based on joint work with David Hasler and Oliver Siebert.
description: 13 pages, contribution to the proceedings of the 2021 RIMS Workshop 'Mathematical Aspects of Quantum Fields and Related Topics'
Critical Vidders
Creators: name: Svegaard, Sebastian F. K.
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: This article will introduce and take a look at a specific subset of the fan created remix videos known as vids, namely those that deal with feminist based critique of media. Through examples, it will show how fans construct and present their critique, and finally broach the topic of the critical vid as a possible spreadable call for better media products.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
"That Is a Suspicious Reaction!": Interpreting Logits Variation to Detect NLP Adversarial Attacks
Creators: name: Mosca, Edoardo
name: Agarwal, Shreyash
name: Rando, Javier
name: Groh, Georg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Adversarial attacks are a major challenge faced by current machine learning research. These purposely crafted inputs fool even the most advanced models, precluding their deployment in safety-critical applications. Extensive research in computer vision has been carried to develop reliable defense strategies. However, the same issue remains less explored in natural language processing. Our work presents a model-agnostic detector of adversarial text examples. The approach identifies patterns in the logits of the target classifier when perturbing the input text. The proposed detector improves the current state-of-the-art performance in recognizing adversarial inputs and exhibits strong generalization capabilities across different NLP models, datasets, and word-level attacks.
description: ACL 2022
Electroweak gauge boson polarisation at the LHC
Creators: name: Stirling, W. J.
name: Vryonidou, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the polarisation of gauge bosons produced at the LHC. Polarisation effects for W bosons manifest themselves in the angular distributions of the lepton and in the distributions of lepton transverse momentum and missing transverse energy. The distributions also depend on the selection cuts, with kinematic effects competing with polarisation effects. The polarisation is discussed for a range of different processes producing W bosons: W+jets, W from top (single and pair) production, W pair production and W production in association with a Z or Higgs boson. The relative contributions of the different polarisation states varies from process to process, reflecting the dynamics of the underlying hard-scattering process. We also present results for the polarisation of the Z boson produced in association with QCD jets at the LHC, and comment on the differences between W and Z production.
description: 27 pages, 25 figures
Additional file 3 of Elevated tumor expression of Astroprincin (FAM171A1) is an independent marker of poor prognosis in colon cancer
Creators: name: Kaprio, Tuomas
name: Lindström, Alexander M.
name: Rasila, Tiina
name: Saavalainen, Olga
name: Beilmann-Lehtonen, Ines
name: Mustonen, Harri
name: Haglund, Caj
name: Andersson, Leif C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 3: Table S1. Characteristics of test series.
Additional file 4 of Elevated tumor expression of Astroprincin (FAM171A1) is an independent marker of poor prognosis in colon cancer
Creators: name: Kaprio, Tuomas
name: Lindström, Alexander M.
name: Rasila, Tiina
name: Saavalainen, Olga
name: Beilmann-Lehtonen, Ines
name: Mustonen, Harri
name: Haglund, Caj
name: Andersson, Leif C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 4: Table S2. Characteristics of validation series.
Urheberrechtliche Probleme bei der Facebook-Nutzung
Creators: name: Maier, Franziska
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2020

description: Die sich fortentwickelnden technischen Möglichkeiten, insbesondere im Bereich des Internets, stellen die Rechtswissenschaften vor immer neue Herausforderungen. Es stellt sich die Frage wie mit unseren bestehenden Rechtsnormen diesen Herausforderungen zu begegnen ist. Der nachfolgende Aufsatz beschäftigt sich mit urheberrechtlichen Problemen im sozialen Netzwerk Facebook, welches in Deutschland in den letzten Jahren einen hohen Beliebtheitsgrad erreicht hat. Im Schwerpunkt wird der Frage nachgegangen, inwieweit der Inhaber einer Facebook-Pinnwand für urheberrechtswidrige Pinnwandeinträge von Dritten haften muss und ob im Falle einer Haftung des Pinnwandinhabers ein Rückgriff auf das Unternehmen Facebook möglich ist.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2014): StudZR-WissOn
Der Grundsatz der Vertraulichkeit des Schiedsverfahrens – Grundlagen und Grenzen
Creators: name: Platz, Jonathan
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2020

description: Gegenüber dem ordentlichen Rechtsweg ist der Grundsatz der Vertraulichkeit einer der wichtigsten Vorteile des Schiedsverfahrens. Eine etwaige Verpflichtung der Parteien, im Rahmen des Verfahrens erhaltene Informationen vertraulich zu behandeln, bewahrt gerade juristischen Personen davor, sensible Daten über die Grenzen des Prozesses hinaus preisgeben zu müssen. Gleichwohl steht die rechtliche Verankerung dieses Grundsatzes auf wackligen Füßen und wird zunehmend kritisch betrachtet. Der Beitrag unterzieht verschiedene juristische Ansätze zur Sicherung des vertraulichen Ablaufs des Schiedsverfahrens einer kritischen Würdigung. Schließlich wird eine aus Sicht des Autors vorzugswürdige Auffassung dargestellt, die der Bedeutung des Grundsatzes der Vertraulichkeit gerecht wird, gleichzeitig aber flexible Einschränkungen ermöglicht, um die Wahrung der Interessen aller Betroffenen zu gewährleisten.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2014): StudZR-WissOn
Bulk electronic structure of superconducting LaRu2P2 single crystals measured by soft x-ray angle-resolved photoemission spectroscopy
Creators: name: Razzoli, E.
name: Kobayashi, M.
name: Strocov, V. N.
name: Delley, B.
name: Bukowski, Z.
name: Karpinski, J.
name: Plumb, N. C.
name: Radovic, M.
name: Chang, J.
name: Schmitt, T.
name: Patthey, L.
name: Mesot, J.
name: Shi, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a soft X-ray angle-resolved photoemission spectroscopy (SX-ARPES) study of the stoichiometric pnictide superconductor LaRu2P2. The observed electronic structure is in good agreement with density functional theory (DFT) calculations. However, it is significantly different from its counterpart in high-temperature superconducting Fe-pnictides. In particular the bandwidth renormalization present in the Fe-pnictides (~2 - 3) is negligible in LaRu2P2 even though the mass enhancement is similar in both systems. Our results suggest that the superconductivity in LaRu2P2 has a different origin with respect to the iron pnictides. Finally we demonstrate that the increased probing depth of SX-ARPES, compared to the widely used ultraviolet ARPES, is essential in determining the bulk electronic structure in the experiment.
description: 4 pages, 4 figures, 1 supplemental material. Accepted for publication in Physical Review Letters
Signal to noise ratio in parametrically-driven oscillators
Creators: name: Batista, Adriano A.
name: Moreira, Raoni S. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Here we report a theoretical model based on Green's functions and averaging techniques that gives ana- lytical estimates to the signal to noise ratio (SNR) near the first parametric instability zone in parametrically- driven oscillators in the presence of added ac drive and added thermal noise. The signal term is given by the response of the parametrically-driven oscillator to the added ac drive, while the noise term has two dif- ferent measures: one is dc and the other is ac. The dc measure of noise is given by a time-average of the statistically-averaged fluctuations of the position of the parametric oscillator due to thermal noise. The ac measure of noise is given by the amplitude of the statistically-averaged fluctuations at the frequency of the parametric pump. We observe a strong dependence of the SNR on the phase between the external drive and the parametric pump, for some range of the phase there is a high SNR, while for other values of phase the SNR remains flat or decreases with increasing pump amplitude. Very good agreement between analytical estimates and numerical results is achieved.
description: Submitted to Phys. Rev. E
Filters in C*-Algebras
Creators: name: Bice, Tristan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: In this paper we analyze states on C*-algebras and their relationship to filter-like structures of projections and positive elements in the unit ball. After developing the basic theory we use this to investigate the Kadison-Singer conjecture, proving its equivalence to an apparently quite weak paving conjecture and the existence of unique maximal centred extensions of projections coming from ultrafilters on the natural numbers. We then prove that Reid's positive answer to this for q-points in fact also holds for rapid p-points, and that maximal centred filters are obtained in this case. We then show that consistently such maximal centred filters do not exist at all meaning that, for every pure state on the Calkin algebra, there exist projections p and q on which the state is 1, even though it is bounded strictly below 1 for projections below both p and q. Lastly we investigate towers, using cardinal invariant equalities to construct towers on the natural numbers that do and do not remain towers when canonically embedded into the Calkin algebra. Finally we show that consistently all towers on the natural numbers remain towers under this embedding.
Sparse optimization problems in fractional order Sobolev spaces
Creators: name: Antil, Harbir
name: Wachsmuth, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider optimization problems in the fractional order Sobolev spaces $H^s(Ω)$, $s\in (0,1)$, with sparsity promoting objective functionals containing $L^p$-pseudonorms, $p\in (0,1)$. Existence of solutions is proven. By means of a smoothing scheme, we obtain first-order optimality conditions. An algorithm based on this smoothing scheme is developed. Weak limit points of iterates are shown to satisfy a stationarity system that is slightly weaker than that given by the necessary condition.
description: Corrected version of published paper
Mark Rein•Hagen’s Foundational Influence on 21st Century Vampiric Media
Creators: name: Konzack, Lars
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: Mark Rein•Hagen’s role-playing game Vampire: The Masquerade, set in the World of Darkness shared universe, is foundational to the 21st Century vampire. We aim to, through the cultural analysis of how ideas have been transferred from this role-playing game to other media, clearly demonstrate Mark Rein•Hagen’s cultural historical significance.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
A Statistical Fractal-Diffusive Avalanche Model of a Slowly-Driven Self-Organized Criticality System
Creators: name: Aschwanden, Markus J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We develop a statistical analytical model that predicts the occurrence frequency distributions and parameter correlations of avalanches in nonlinear dissipative systems in the state of a slowly-driven self-organized criticality (SOC) system. This model, called the fractal-diffusive SOC model, is based on the following four assumptions: (i) The avalanche size $L$ grows as a diffusive random walk with time $T$, following $L \propto T^{1/2}$; (ii) The instantaneous energy dissipation rate $f(t)$ occupies a fractal volume with dimension $D_S$, which predicts the relationships $F = f(t=T) \propto L^{D_S} \propto T^{D_S/2}$, $P \propto L^{S} \propto T^{S/2}$ for the peak energy dissipation rate, and $E \propto F T \propto T^{1+D_S/2}$ for the total dissipated energy; (iii) The mean fractal dimension of avalanches in Euclidean space $S=1,2,3$ is $D_S \approx (1+S)/2$; and (iv) The occurrence frequency distributions $N(x) \propto x^{-α_x}$ based on spatially uniform probabilities in a SOC system are given by $N(L) \propto L^{-S}$, which predicts powerlaw distributions for all parameters, with the slopes $α_T=(1+S)/2$, $α_F=1+(S-1)/D_S$, $α_P=2-1/S$, and $α_E=1+(S-1)/(D_S+2)$. We test the predicted fractal dimensions, occurrence frequency distributions, and correlations with numerical simulations of cellular automaton models in three dimensions $S=1,2,3$ and find satisfactory agreement within $\approx 10%$. One profound prediction of this universal SOC model is that the energy distribution has a powerlaw slope in the range of $α_E=1.40-1.67$, and the peak energy distribution has a slope of $α_P=1.67$ (for any fractal dimension $D_S=1,...,3$ in Euclidean space S=3), and thus predicts that the bulk energy is always contained in the largest events, which rules out significant nanoflare heating in the case of solar flares.
description: 9 Figures, 1 movie available at authors website, http://www.lmsal.com/~aschwand/eprints/cellular_automaton_movie.jpeg
Elachista metella Kaila 2002
Creators: name: Wieser, Christian
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Elachistidae
Elachista
Elachista metella

description: Elachista metella Kaila, 2002
Wie bereits bei HUEMER 2013 im Kommentar vermutet, ist die Art weiter verbreitet als durch Paratypen aus Niederösterreich belegt. Zwei Exemplare wurden mittels Barcode aus Kärnten bestätigt. Ein Fund stammt vom Motschulaberg, N Weg, 13.9.2015 (Barcodekenndaten in BOLD: KLM Lep 03713/PHLAJ578-15) und der zweite von der Weinitzen, Eichenhang 24.8.2016 (Barcodekenndaten in BOLD: KLM Lep 12317/LEAST 1562-18). Beide Funde leg. und det. Wieser.
description: Published as part of Wieser, Christian, 2017, Weitere Erstfunde und bemerkenswerte Schmetterlingsnachweise aus Kärnten (Insecta: Lepidoptera), pp. 285-291 in Rudolfinum – Jahrbuch des Landesmuseums für Kärnten 2017 on page 289, DOI: 10.5281/zenodo.5725317
Higher-form symmetries, anomalous magnetohydrodynamics, and holography
Creators: name: Das, Arpit
name: Gregory, Ruth
name: Iqbal, Nabil
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In $U(1)$ Abelian gauge theory coupled to fermions, the non-conservation of the axial current due to the chiral anomaly is given by a dynamical operator $F_{μν} \tilde{F}^{μν}$ constructed from the field-strength tensor. We attempt to describe this physics in a universal manner by casting this operator in terms of the 2-form current for the 1-form symmetry associated with magnetic flux conservation. We construct a holographic dual with this symmetry breaking pattern and study some aspects of finite temperature anomalous magnetohydrodynamics. We explicitly calculate the charge susceptibility and the axial charge relaxation rate as a function of temperature and magnetic field and compare to recent lattice results. At small magnetic fields we find agreement with elementary hydrodynamics weakly coupled to an electrodynamic sector, but we find deviations at larger fields.
description: 41 pages, 3 figures and 2 tables. v2: some minor clarifications, main results unchanged, references added. v3: minor typos fixed, main results unchanged, references added, matches published version
The rotation of field stars from CoRoT data
Creators: name: Affer, Laura
name: Micela, Giuseppina
name: Favata, Fabio
name: Flaccomio, Ettore
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present period measurements of a large sample of field stars in the solar neighbourhood, observed by CoRoT in two different directions of the Galaxy. The presence of a period was detected using the Scargle Lomb Normalized Periodogram technique and the autocorrelation analysis. The assessment of the results has been performed through a consistency verification supported by the folded light curve analysis. The data analysis procedure has discarded a non-negligible fraction of light curves due to instrumental artifacts, however it has allowed us to identify pulsators and binaries among a large number of field stars. We measure a wide range of periods, from 0.25 to 100 days, most of which are rotation periods. The final catalogue includes 1978 periods, with 1727 of them identified as rotational periods, 169 are classified as pulsations and 82 as orbital periods of binary systems. Our sample suffers from selection biases not easily corrected for, thus we do not use the distribution of rotation periods to derive the age distribution of the main-sequence population. Nevertheless, using rotation as a proxy for age, we can identify a sample of young stars (< 600 Myr), that will constitute a valuable sample, supported by further spectroscopic observations, to study the recent star formation history in the solar neighborhood.
description: 13 pages, 11 figures
Additional file 1 of General health, healthcare costs and dental care use of elderly with a natural dentition, implant-retained overdenture or conventional denture: an 8-year cohort of Dutch elderly (aged 75 and over)
Creators: name: Bakker, Mieke H.
name: Vissink, Arjan
name: Raghoebar, Gerry M.
name: Peters, Lilian L.
name: Visser, Anita
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1:. Table 1 Characteristics of Dutch elderly stratified by oral status in the period 2009-2016.
Existence of relativistic stars in f(T) gravity
Creators: name: Boehmer, Christian G.
name: Mussa, Atifah
name: Tamanini, Nicola
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the existence of relativistic stars in f(T) modified gravity and explicitly construct several classes of static perfect fluid solutions. We derive the conservation equation from the complete f(T) gravity field equations and present the differences with its teleparallel counterpart. Firstly, we choose the tetrad field in the diagonal gauge and study the resulting field equations. Some exact solutions are explicitly constructed and it is noted that these solutions have to give a constant torsion scalar. Next, we choose a non diagonal tetrad field which results in field equations similar to those of general relativity. For specific models we are able to construct exact solutions of these field equations. Among those new classes of solutions, we find negative pressure solutions, and an interesting class of polynomial solutions.
description: 19 pages; substantially revised and extended version, off diagonal tetrad discussion added
Undue influence als Fallgruppe der Sittenwidrigkeit? Ein rechtsvergleichender Ansatz unter besonderer Berücksichtigung des Kreditsicherungsrechts
Creators: name: König, Kerstin
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2020

description: Ein Vertragsschluss sollte auf der freien Willensentscheidung jeder Vertragspartei beruhen. Der Privatautonomie kommt weitreichender Schutz zu. Doch gibt es Grenzen, bei deren Überschreiten Gerichte eingreifen müssen? Im englischen Recht zieht die Lehre der undue influence eine Grenze, ab wann eine zulässige Einflussnahme auf eine Vertragspartei in eine unzulässige umschlägt. Hauptanwendungsfeld sind dabei Kreditsicherungsverträge. Es wird untersucht, ob es einen vergleichbaren Ansatz im deutschen Recht gibt und aufgezeigt, worin die Unterschiede und Gemeinsamkeiten zwischen den beiden Rechtsordnungen in diesem Bereich liegen. Welche Erkenntnisse kann man aus diesem Vergleich gewinnen?
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2014): StudZR-WissOn
Warum schützt das Recht die biologische Vielfalt?
Creators: name: Kiefer, Laura
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2020

description: Der Verlust an biologischer Vielfalt schreitet mit hoher Geschwindigkeit voran – nach Schätzungen sterben weltweit jedes Jahr 15.000 bis 30.000 Pflanzen- und Tierarten aus. Das internationale, europäische und deutsche Recht will dieser Entwicklung entgegenwirken und die Biodiversität sichern. Was aber sind die Beweggründe des Gesetzgebers hierfür? Welche Zwecke verfolgt dieser mit dem Schutz der biologischen Vielfalt? Diesen grundsätzlichen Fragen soll im Folgenden aus einer primär juristischen (naturschutzrechtlichen) Perspektive, unter Beachtung der sonstigen umweltwissenschaftlichen Bezüge, nachgegangen werden. Es wird zunächst geklärt, welche umweltethische Konzeption hinter den aktuellen Bestimmungen zur Sicherung der Biodiversität steht (I.). Des Weiteren wird untersucht, ob der gegenwärtig verfolgte Ansatz zum Schutz der Biodiversität rechtlich (II.) und rechtspolitisch (III.) zu überzeugen vermag oder ob insoweit Handlungsbedarf de lege ferenda festzustellen ist. Ein kurzes Fazit schließt die Überlegungen ab (IV.).
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2014): StudZR-WissOn
Additional file 2 of General health, healthcare costs and dental care use of elderly with a natural dentition, implant-retained overdenture or conventional denture: an 8-year cohort of Dutch elderly (aged 75 and over)
Creators: name: Bakker, Mieke H.
name: Vissink, Arjan
name: Raghoebar, Gerry M.
name: Peters, Lilian L.
name: Visser, Anita
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2:. Table 2 Healthcare costs (per person) of Dutch elderly in the period 2009–2016.
Inference of multivariate exponential Hawkes processes with inhibition and application to neuronal activity
Creators: name: Bonnet, Anna
name: Herrera, Miguel Martinez
name: Sangnier, Maxime
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The multivariate Hawkes process is a past-dependent point process used to model the relationship of event occurrences between different phenomena.Although the Hawkes process was originally introduced to describe excitation effects, which means that one event increases the chances of another occurring, there has been a growing interest in modelling the opposite effect, known as inhibition.In this paper, we focus on how to infer the parameters of a multidimensional exponential Hawkes process with both excitation and inhibition effects. Our first result is to prove the identifiability of this model under a few sufficient assumptions. Then we propose a maximum likelihood approach to estimate the interaction functions, which is, to the best of our knowledge, the first exact inference procedure in the frequentist framework.Our method includes a variable selection step in order to recover the support of interactions and therefore to infer the connectivity graph.A benefit of our method is to provide an explicit computation of the log-likelihood, which enables in addition to perform a goodness-of-fit test for assessing the quality of estimations.We compare our method to standard approaches, which were developed in the linear framework and are not specifically designed for handling inhibiting effects.We show that the proposed estimator performs better on synthetic data than alternative approaches. We also illustrate the application of our procedure to a neuronal activity dataset, which highlights the presence of both exciting and inhibiting effects between neurons.
description: Statistics and Computing, 2023
Europäisches Beihilfenrecht: Das Problem der Staatlichkeit der gewährten Mittel - zugleich Anmerkung zu dem Urteil des EuGH vom 30.5.2013 – Rs. C-677/11 (Doux Elévage)
Creators: name: Wollenschläger, Désirée
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2020

description: Das Verbot staatlicher Beihilfe gem. Art. 107 Abs. 1 AEUV lässt aufgrund eines unpräzisen Wortlautes – verboten sind „staatliche Beihilfen“ und „aus staatlichen Mitteln gewährte Beihilfen“– Raum für allerlei Interpretationen. Dies ist einerseits begrüßenswert, da bei einem weit gefassten Wortlaut auch sämtliches staatliche Handeln von diesem erfasst wird und somit einer Umgehung durch die Mitgliedstaaten vorgebeugt wird. Andererseits widerspricht es der Grundidee der Europäischen Union als einem Verbund souveräner Staaten, wenn jegliches Staatshandeln der Aufsicht der Europäischen Kommission unterfällt. Der folgende Beitrag setzt sich mit der Frage auseinander, wo die Grenzen des Beihilfenverbots angesichts dieses Spannungsverhältnisses sinnvollerweise zu ziehen sind. Es wird aufgezeigt, dass ein Mindestmaß staatlichen Einflusses auf den Mittelfluss zu fordern ist, um den Bogen nicht zu überspannen.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2014): StudZR-WissOn
A Study of Academic Leaders in Two Large Alberta Universities
Creators: name: Davalos, Jose Fernando
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Education--Administration
subject: Education--Adult and Continuing
subject: Education--Higher
subject: Academic Leadership
subject: Servant Leadership
subject: Spirituality

description: We know practically nothing about academic leaders, though business leaders are well studied. This qualitative study looks in some detail at academic leadership in two large Western universities, through in depth interviews of a variety of highly successful academic leaders. It includes leaders of research in their disciplinary fields, leaders that are highly respected as outstanding teachers, and leaders that are highly respected as administrators. The study explores the academic and leadership practices of those respected academic leaders, and produces information on their leadership qualities. The analysis of the data obtained in the field established an emerging narrative about academic leadership in general, as well as new and interesting subjects related to the overall academic leadership subject. The resulting narrative also revealed evidence of positive human qualities in the academic leadership of the participants. If spirituality is to be understood as how the XIV Dalai Lama understands it, namely that qualities such as love, compassion, patience, kindness, tolerance, forgiveness and responsibility are the mark of a true spiritual person in a time, then the leaders studied in this work are all truly spiritual in nature.
Measurement of antiproton production from antihyperon decays in pHe collisions at $\sqrt{s_{NN}}=110$ GeV
Creators: name: The LHCb Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110 GeV/c. The dominant antihyperon contribution, namely $\barΛ \to \bar{p} π^+$ decays from promptly produced $\barΛ$ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.
description: 26 pages, 17 figures. All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-006.html (LHCb public pages)
I’d like to have a house like that
Creators: name: Vosmeer, Miriam
name: Jansz, Jeroen
name: Zoonen, Liesbet Van
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: Jeroen Jansz holds the Chair of Communication and Media in the Department of Media & Communication at Erasmus University Rotterdam. He was co-founder of the Special Interest Group Game Studies in the International Communication Association and the Dutch chapter of the Digital Games Research Association.

Liesbet van Zoonen is professor of Sociology at Erasmus University Rotterdam, dean of the Erasmus Graduate School of Social Sciences and the Humanities and holds a chair in Media and Communication at Loughborough University (UK).

This qualitative interview study explores the practices of adult female gamers who play the videogame The Sims, focusing on the motivations they have for playing and how playing a video game might influence their digital competence. We address the wider context of leisure and the household, investigating to what extent playing videogames has become domesticated in the daily life of the family. It is found that female gamers play The Sims because they enjoy the particular way it allows them to take control, fantasize, and be challenged. For some, it is clear that playing this video game has increased their digital skills. We notice that there is an interesting similarity between the pleasures of playing this videogame and more traditional ways of female media engagement such as reading women’s magazines or romance novels and watching soap operas. Our gamers similarly enjoy The Sims as leisurely moments for themselves, clearly and intentionally separated from domestic and family duties. We conclude that playing a videogame can be seen as a highly modern and liberating practice, as both playing in general and using ICT have traditionally not been a part of the female leisure domain.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
Covariant Description of Transformation Optics in Linear and Nonlinear Media
Creators: name: Paul, Oliver
name: Rahm, Marco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The technique of transformation optics (TO) is an elegant method for the design of electromagnetic media with tailored optical properties. In this paper, we focus on the formal structure of TO theory. By using a complete covariant formalism, we present a general transformation law that holds for arbitrary materials including bianisotropic, magneto-optical, nonlinear and moving media. Due to the principle of general covariance, the formalism is applicable to arbitrary space-time coordinate transformations and automatically accounts for magneto-electric coupling terms. The formalism is demonstrated for the calculation of the second harmonic generation in a twisted TO concentrator.
description: 19 pages, 2 figures
Additional file 1 of Changes in diet from pregnancy to one year after birth: a longitudinal study
Creators: name: Poulain, Tanja
name: Spielau, Ulrike
name: Vogel, Mandy
name: Dathan-Stumpf, Anne
name: Körner, Antje
name: Kiess, Wieland
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Categorization of diet composition based on German dietary guidelines.
Towards Self-assembling Multichromophoric Materials for Organic Semiconductors
Creators: name: Thériault, Kim
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Chemistry--Organic
subject: organic electronics
subject: multichromophore
subject: liquid crystal

description: Organic semiconductors are generally lightweight, flexible materials that can be solution processed. These properties make them an economical alternative to inorganic semiconductors, as they can be more easily manufactured and integrated into existing infrastructure. However, organic electronic devices have seen only marginal improvements in charge carrying ability over the last few decades due to a compromise between ease of manufacturing and efficient charge transport. The field of organic electronics has been developing new molecular systems with attention to the electronic properties of the individual molecules, in addition to understanding the self-assembly of these molecules in the solid state. The goal of this thesis was to investigate the molecular and supramolecular properties of novel multichromophoric molecules as organic semiconductors, which could be an alternative to the bimolecular systems that are commonly used in electronic devices. First, phenothiazine derivatives were synthesized and optical and electrochemical properties were studied as potential electron donor chromophores. These phenothiazine derivatives were found to have large Stokes shifts associated with a large geometry change upon excitation. Second, analogous acridone derivatives were synthesized and investigated to explore the differences in optical properties. They did not exhibit a large geometry change upon excitation but underwent intramolecular charge transfer, enhancing the absorption properties compared to phenothiazine. Lastly, a multichromophoric triad comprised of a naphthalene diimide core flanked by two phenothiazine derivatives separated by an alkyl spacer was synthesized. The optical and electrochemical properties of the triad in solution were investigated as well as self-assembly and photocurrent responses in films. It was demonstrated that the chromophores in the triad behaved independently both optically and electrochemically. In the solid state, the triad formed ordered films and generated small currents upon exposure to light, which are encouraging preliminary results towards the development of new multichromophoric photoactive materials.
Casual Games
Creators: name: Hansen, Ole Ertløv
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: Casual games have become a widespread activity that fills our leisure time. This article introduces to the phenomenon casual games –their definition and the history. Furthermore the article presentsand discusses the experience of and engagement or immersion inplaying these games as it is put forward by recent research. Thetheoretical approach is based on media psychology, phenomenology and reversal theory. Finally it is argued that playing casualgames is fundamental pleasurable to both paratelic as well as telicmetamotivational states.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11