cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robust analytic continuation of Green's functions via projection, pole estimation, and semidefinite relaxation
Creators: name: Huang, Zhen
name: Gull, Emanuel
name: Lin, Lin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Green's functions of fermions are described by matrix-valued Herglotz-Nevanlinna functions. Since analytic continuation is fundamentally an ill-posed problem, the causal space described by the matrix-valued Herglotz-Nevanlinna structure can be instrumental in improving the accuracy and in enhancing the robustness with respect to noise. We demonstrate a three-pronged procedure for robust analytic continuation called PES: (1) Projection of data to the causal space. (2) Estimation of pole locations. (3) Semidefinite relaxation within the causal space. We compare the performance of PES with the recently developed Nevanlinna and Carathéodory continuation methods and find that PES is more robust in the presence of noise and does not require the usage of extended precision arithmetics. We also demonstrate that a causal projection improves the performance of the Nevanlinna and Carathéodory methods. The PES method is generalized to bosonic response functions, for which the Nevanlinna and Carathéodory continuation methods have not yet been developed. It is particularly useful for studying spectra with sharp features, as they occur in the study of molecules and band structures in solids.
description: 14 pages, 5 figures
Determination of the eta'-proton scattering length in free space
Creators: name: Czerwinski, E.
name: Moskal, P.
name: Silarski, M.
name: Bass, S. D.
name: Grzonka, D.
name: Kamys, B.
name: Khoukaz, A.
name: Klaja, J.
name: Krzemien, W.
name: Oelert, W.
name: Ritman, J.
name: Sefzick, T.
name: Smyrski, J.
name: Taschner, A.
name: Wolke, M.
name: Zielinski, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton-beam of the Cooler Synchrotron COSY we determine the excitation function for the pp --> pp eta' reaction close-to-threshold. Combining these data with previous results we extract the scattering length for the eta'-proton potential in free space to be Re(a_{p eta'}) = 0+-0.43 fm and Im(a_{p eta'}) = 0.37(+0.40)(-0.16) fm.
description: 5 pages, 3 figures, accepted for publication in Phys. Rev. Lett
Using Normalisation Process Theory (NPT) to develop an intervention to improve referral and uptake rates for self-management education for patients with type 2 diabetes in UK primary care.
Creators: name: Turner, Jessica
name: Martin, Graham
name: Hudson, Nicky
name: Shaw, Liz
name: Huddlestone, Lisa
name: Weis, Christina
name: Northern, Alison
name: Schreder, Sally
name: Davies, Melanie
name: Eborall, Helen
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Research Article
Type 2 diabetes
Self-management
Structured education
Intervention development
Qualitative
Normalisation Process Theory

description: BACKGROUND: Referral and uptake rates of structured self-management education (SSME) for Type 2 diabetes (T2DM) in the UK are variable and relatively low. Research has documented contributing factors at patient, practitioner and organisational levels. We report a project to develop an intervention to improve referral to and uptake of SSME, involving an integrative synthesis of existing datasets and stakeholder consultation and using Normalisation Process Theory (NPT) as a flexible framework to inform the development process. METHODS: A three-phase mixed-methods development process involved: (1) synthesis of existing evidence; (2) stakeholder consultation; and (3) intervention design. The first phase included a secondary analysis of data from existing studies of T2DM SSME programmes and a systematic review of the literature on application of NPT in primary care. Influences on referral and uptake of diabetes SSME were identified, along with insights into implementation processes, using NPT constructs to inform analysis. This gave rise to desirable attributes for an intervention to improve uptake of SSME. The second phase involved engaging with stakeholders to prioritise and then rank these attributes, and develop a list of associated resources needed for delivery. The third phase addressed intervention design. It involved translating the ranked attributes into essential components of a complex intervention, and then further refinement of components and associated resources. RESULTS: In phase 1, synthesised analysis of 64 transcripts and 23 articles generated a longlist of 46 attributes of an embedded SSME, mapped into four overarching domains: valued, integrated, permeable and effectively delivered. Stakeholder engagement in phase 2 progressed this to a priority ranked list of 11. In phase 3, four essential components attending to the prioritised attributes and forming the basis of the intervention were identified: 1) a clear marketing strategy for SSME; 2) a user friendly and effective referral pathway; 3) new/amended professional roles; and 4) a toolkit of resources. CONCLUSIONS: NPT provides a flexible framework for synthesising evidence for the purpose of developing a complex intervention designed to increase and reduce variation in uptake to SSME programmes in primary care settings.
Review of Silvio Bär & Emily Hauser (eds.), Reading Poetry, Writing Genre. English Poetry and Literary Criticism in Dialogue with Classical Scholarship
Creators: name: Di Rocco, Emilia
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Stable antibiotic resistance and rapid human adaptation in livestock-associated MRSA
Creators: name: Matuszewska, Marta
name: Murray, Gemma
name: Ba, Xiaoliang
name: Wood, Rhiannon
name: Holmes, Mark
name: Weinert, Lucy
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: subject: Staphylococcus aureus
subject: Antibiotic Resistance
subject: Zoonosis
subject: epidemiology
subject: MRSA
subject: Mobile genetic elements
subject: Global Health
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Host-switching
subject: Animals
subject: Humans
subject: Staphylococcal Infections
subject: Anti-Bacterial Agents
subject: Drug Resistance, Microbial
subject: Methicillin-Resistant Staphylococcus aureus
subject: Livestock

description: Funder: Medical Research Council
description: Funder: Newnham College, University of Cambridge
description: Mobile genetic elements (MGEs) are agents of horizontal gene transfer in bacteria, but can also be vertically inherited by daughter cells. Establishing the dynamics that led to contemporary patterns of MGEs in bacterial genomes is central to predicting the emergence and evolution of novel and resistant pathogens. Methicillin-resistant Staphylococcus aureus (MRSA) clonal-complex (CC) 398 is the dominant MRSA in European livestock and a growing cause of human infections. Previous studies have identified three categories of MGEs whose presence or absence distinguishes livestock-associated CC398 from a closely related and less antibiotic-resistant human-associated population. Here we fully characterise the evolutionary dynamics of these MGEs using a collection of 1,180 CC398 genomes, sampled from livestock and humans, over 27 years. We find that the emergence of livestock-associated CC398 coincided with the acquisition of a Tn 916 transposon carrying a tetracycline resistance gene, which has been stably inherited for 57 years. This was followed by the acquisition of a type V SCC mec that carries methicillin, tetracycline and heavy metal resistance genes, which has been maintained for 35 years, with occasional truncations and replacements with type IV SCC mec . In contrast, a class of prophages that carry a human immune evasion gene cluster and that are largely absent from livestock-associated CC398, have been repeatedly gained and lost in both human- and livestock-associated CC398. These contrasting dynamics mean that when livestock-associated MRSA is transmitted to humans, adaptation to the human host outpaces loss of antibiotic resistance. In addition, the stable inheritance of resistance-associated MGEs suggests that the impact of ongoing reductions in antibiotic and zinc oxide use in European farms on livestock-associated MRSA will be slow to be realised.
description: MM was funded by the Medical Research Council, co-funded by the Raymond and Beverly Sackler Fund. GGRM and LAW were supported by a Sir Henry Dale Fellowship jointly funded by the Wellcome Trust and the Royal Society (109385/Z/15/Z). GGRM was also supported by a ZELS BBSRC award (BB/L018934/1) and a Research Fellowship at Newnham College
title: Saudi Arabian strategy reassessment since 2003: The emergence of a regional leadership via Neoclassical Realist lenses
Creators: name: Cerioli, Luíza
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: Saudi Arabia
subject: neoclassical realism
subject: MBS
subject: grand strategy
subject: regional leadership
subject: 300
subject: 320
subject: Saudi-Arabien
subject: Neorealismus
subject: Geopolitik
subject: Strategie
subject: Regionalpolitik
subject: Geschichte 2003-2023

description: Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag
Der Heldenkörper in Szene gesetzt
Creators: name: Schierl, Petra
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: Taking its cue from the portrayal of Hercules as muscleman in both films and ancient sculpture this article turns to poetry as a verbal art and examines when and how the hero's body comes into focus in Roman epic and elegy. It is argued that moments of crisis contrasting Hercules’ state in a given situation to his former heroic achievements give rise to representations of his body, while epic fight scenes rather draw attention to the bodies of his inferior opponents. The body is described through references to different body parts, qualified by attributes as masculine in elegiac contexts. A somewhat exotic word as tori suffices to highlight the hero’s muscular body.
description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Wong-Zakai type approximations of rough random dynamical systems by smooth noise
Creators: name: Cao, Qiyong
name: Gao, Hongjun
name: Schmalfuss, Bjorn
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: This paper is devoted to the smooth and stationary Wong-Zakai approximations for a class of rough differential equations driven by a geometric fractional Brownian rough path $\boldsymbolω$ with Hurst index $H\in(\frac{1}{3},\frac{1}{2}]$. We first construct the approximation $\boldsymbolω_δ$ of $\boldsymbolω$ by probabilistic arguments, and then using the rough path theory to obtain the Wong-Zakai approximation for the solution on any finite interval. Finally, both the original system and approximative system generate a continuous random dynamical systems $φ$ and $φ^δ$. As a consequence of the Wong-Zakai approximation of the solution, $φ^δ$ converges to $φ$ as $δ\rightarrow 0$.
Population spiking and bursting in next generation neural masses with spike-frequency adaptation
Creators: name: Ferrara, Alberto
name: Angulo-Garcia, David
name: Torcini, Alessandro
name: Olmi, Simona
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Spike-frequency adaptation (SFA) is a fundamental neuronal mechanism taking into account the fatigue due to spike emissions and the consequent reduction of the firing activity. We have studied the effect of this adaptation mechanism on the macroscopic dynamics of excitatory and inhibitory networks of quadratic integrate-and-fire (QIF) neurons coupled via exponentially decaying post-synaptic potentials. In particular, we have studied the population activities by employing an exact mean field reduction, which gives rise to next generation neural mass models. This low-dimensional reduction allows for the derivation of bifurcation diagrams and the identification of the possible macroscopic regimes emerging both in a single and in two identically coupled neural masses. In single populations SFA favours the emergence of population bursts in excitatory networks, while it hinders tonic population spiking for inhibitory ones. The symmetric coupling of two neural masses, in absence of adaptation, leads to the emergence of macroscopic solutions with broken symmetry: namely, chimera-like solutions in the inhibitory case and anti-phase population spikes in the excitatory one. The addition of SFA leads to new collective dynamical regimes exhibiting cross-frequency coupling (CFC) among the fast synaptic time scale and the slow adaptation one, ranging from anti-phase slow-fast nested oscillations to symmetric and asymmetric bursting phenomena. The analysis of these CFC rhythms in the $θ$-$γ$ range has revealed that a reduction of SFA leads to an increase of the $θ$ frequency joined to a decrease of the $γ$ one. This is analogous to what reported experimentally for the hippocampus and the olfactory cortex of rodents under cholinergic modulation, that is known to reduce SFA.
The Transport of Cosmic Rays Across Magnetic Fieldlines
Creators: name: Desiati, Paolo
name: Zweibel, Ellen G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The long residence times and small anisotropies of cosmic rays suggest that they are well confined and well scattered by the Galactic magnetic field. Due to the disklike shape of the confinement volume, transport in the vertical direction, perpendicular to the mean Galactic magnetic field, is key to cosmic ray escape. It has long been recognized that this vertical transport depends both on the vertical component of the fieldlines themselves and on the extent to which the cosmic rays are tied to the fieldlines. In this paper we use magnetic fields with very simple spatial and temporal structure to isolate some important features of cross fieldline transport. We show that even simple magnetic nonuniformities combined with pitch angle scattering can enhance cross fieldline transport by several orders of magnitude, while pitch angle scattering is unnecessary for enhanced transport if the field is chaotic. Nevertheless, perpendicular transport is much less than parallel transport in all the cases we study. We apply the results to confinement of cosmic rays in the Fermi Bubbles.
description: 17 pages, 11 figures, accepted for publication in ApJ
Enhanced spin-mechanical interaction with levitated micromagnets
Creators: name: Pan, Xue-Feng
name: Hei, Xin-Lei
name: Dong, Xing-Liang
name: Chen, Jia-Qiang
name: Shen, Cai-Peng
name: Ali, Hamad
name: Li, Peng-Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-mechanical hybrid systems have been widely used in quantum information processing. However, the spin-mechanical interaction is generally weak, making it a critical challenge to enhance the spin-mechanical interaction into the strong coupling or even ultra-strong coupling regime. Here, we propose a protocol that can significantly enhance the spin-mechanical coupling strength with a diamond spin vacancy and a levitated micromagnet. A driving electrical current is used to modulate the mechanical motion of the levitated micromagnet, which induces a two-phonon drive and can exponentially enhance the spin-phonon and phonon-medicated spin-spin coupling strengths. Furthermore, a high fidelity Schrodinger cat state and an unconventional 2-qubit geometric phase gate with high fidelity and faster gate speed can be achieved using this hybrid system. This protocol provides a promising platform for quantum information processing with NV spins coupled to levitated micromagnets.
description: 13 pages, 8 figures
Review of Rachel Bryant Davies: Victorian Epic Burlesques. A Critical Anthology of Nineteenth-Century Theatrical Entertainments after Homer
Creators: name: Wesselmann, Katharina
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Three-dimensional core-collapse supernovae with complex magnetic structures: II. Rotational instabilities and multi-messenger signatures
Creators: name: Bugli, Matteo
name: Guilet, Jérôme
name: Foglizzo, Thierry
name: Obergaulinger, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The gravitational collapse of rapidly rotating massive stars can lead to the onset of the low $T/\|W\|$ instability within the central proto-neutron star (PNS), which leaves strong signatures in both the gravitational wave (GW) and neutrino emission. Strong large-scale magnetic fields are usually invoked to explain outstanding stellar explosions of rapidly rotating progenitors, but their impact on the growth of such instability has not yet been cleared. We analyze a series of three-dimensional magnetohydrodynamic models to characterize the effects of different magnetic configurations on the development of the low $T/\|W\|$ and the related multi-messenger features. In the absence of magnetic fields, we observe the growth on dynamical time scales of the low $T/\|W\|$, associated with a strong burst of GW and a correlated modulation of the neutrino emission. However, models with a strong magnetic field show a quenching of the low $T/\|W\|$, due to a flattening of the rotation profile in the first $\sim100$ ms after shock formation caused by the magnetic transport of angular momentum. The associated GW emission is weakened by an order of magnitude, exhibits a broader spectral shape, and has no dominant feature associated with the PNS large-scale oscillation modes. Neutrino luminosities are damped along the equatorial plane due to a more oblate PNS, and the only clear modulation in the signal is due to SASI activity. Finally, magnetized models produce lower luminosities for $ν_e$ than for $\barν_e$, which is connected to a higher concentration of neutron-rich material in the PNS surroundings.
description: 14 pages, 17 figures; accepted for publication in MNRAS
Review of Jesse Weiner, Benjamin E. Stevens & Brett M. Rogers (eds.): Frankenstein and Its Classics. The Modern Prometheus from Antiquity to Science Fiction
Creators: name: Löbcke, Konrad
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Perturbing rational harmonic functions by poles
Creators: name: Sète, Olivier
name: Luce, Robert
name: Liesen, Jörg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 30D05 31A05 85A04

description: We study how adding certain poles to rational harmonic functions of the form $R(z)-\bar{z}$, with $R(z)$ rational and of degree $d\geq 2$, affects the number of zeros of the resulting functions. Our results are motivated by and generalize a construction of Rhie derived in the context of gravitational microlensing (ArXiv e-print 2003). Of particular interest is the construction and the behavior of rational functions $R(z)$ that are {\em extremal} in the sense that $R(z)-\bar{z}$ has the maximal possible number of $5(d-1)$ zeros.
description: Minor corrections, better color scheme for phase portraits
Supplemental Figure 2. Analysis of supernatants from cells conditioned with plasma after exposure to agonist.
Creators: name: Peña-Garcia, Paola
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310199
subject: Biochemistry and cell biology not elsewhere classified

description: Human airway epithelial cells were exposed to plasma from obese subjects for 24 hours before collection, washing, and being left either A) unstimulated or stimulated with B) house dust mite (HDM) or C) IL-1b. Data showing IL-8 detected in the supernatants of cells treated with plasma from obese non-asthma = gray: baseline n = 33 (5 male, 28 female), +2 weeks n = 17 (3 male, 14 female), +6 months n = 14 (4 male, 10 female), +12 months n = 7 (2 male, 5 female), B) non-allergic obese asthma = blue: baseline n = 23 (4 male, 19 female), +2 weeks n = 13 (2 male, 11 female), +6 months n = 11 (2 male, 9 female), +12 months n = 9 (2 male, 7 female), and C) allergic obese asthma = orange: baseline n = 9 (3 male, 6 female), +2 weeks n = 6 (2 male, 4 female), +6 months n = 7 (2 male, 5 female), +12 months = 6 (2 male, 4 female). Male subjects = open circles; female subjects = closed circles. Data was analyzed through Kruskal-Wallis and two-way ANOVA with Dunn’s or Tukey’s multiple comparisons test. There were no statistically significant differences between groups.
Lotte Eisner
Creators: name: Schollmeyer, Patrick
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: Lotte Eisner (1896–1983) gehört unbestritten sowohl zu den bedeutendsten als auch bekanntesten frühen Filmkritiker*innen und Pionier*innen der Filmgeschichtsschreibung. In der Geschichte der Altertumswissenschaften spielt sie hingegen keine Rolle, wird in den einschlägigen wissenschaftshistorischen Abhandlungen in aller Regel nicht einmal am Rande erwähnt, obwohl sie ihre Karriere als promovierte Klassische Archäologin begann. Gleichwohl lohnt es sich, gerade diese relativ kurze Phase ihres Lebens einer näheren Betrachtung zu unterziehen und dabei zu fragen, inwiefern die im Studium praktizierte spezifisch archäologisch-kunsthistorische Schulung des vergleichenden Sehens ihren besonderen Blick auf den expressionistischen deutschen Stummfilm, das Hauptthema ihrer filmwissenschaftlichen Arbeiten, möglicherweise entscheidend geprägt hat, zumal der Stummfilm ähnlich wie die Vasenmalerei bei der Darstellung emotionaler Affekte auf Visualisierungsstrategien mittels expressiver Gestik und Mimik setzen musste. Diese Frage ist umso berechtigter, als Lotte Eisner selbst hierzu in ihrer Autobiografie Stellung nimmt. Die folgenden Zeilen sind als Skizze dieses Problemfeldes zu verstehen.
description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Network Controllability Is Determined by the Density of Low In-Degree and Out-Degree Nodes
Creators: name: Menichetti, Giulia
name: Dall'Asta, Luca
name: Bianconi, Ginestra
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The problem of controllability of the dynamical state of a network is central in network theory and has wide applications ranging from network medicine to financial markets. The driver nodes of the network are the nodes that can bring the network to the desired dynamical state if an external signal is applied to them. Using the framework of structural controllability, here we show that the density of nodes with in-degree and out-degree equal to $0$, $1$ and $2$ determines the number of driver nodes of random networks. Moreover we show that networks with minimum in-degree and out-degree greater than 2, are always fully controllable by an infinitesimal fraction of driver nodes, regardless on the other properties of the degree distribution. Finally, based on these results, we propose an algorithm to improve the controllability of networks.
description: (9 pages, 4 figures)
Improving efficiency of the path optimization method for a gauge theory
Creators: name: Namekawa, Yusuke
name: Kashiwa, Kouji
name: Matsuda, Hidefumi
name: Ohnishi, Akira
name: Takase, Hayato
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate efficiency of a gauge-covariant neural network and an approximation of the Jacobian in optimizing the complexified integration path toward evading the sign problem in lattice field theories. For the construction of the complexified integration path, we employ the path optimization method. The $2$-dimensional $\text{U}(1)$ gauge theory with the complex gauge coupling constant is used as a laboratory to evaluate the efficiency. It is found that the gauge-covariant neural network, which is composed of the Stout-like smearing, can enhance the average phase factor, as the gauge-invariant input does. For the approximation of the Jacobian, we test the most drastic case in which we perfectly drop the Jacobian during the learning process. It reduces the numerical cost of the Jacobian calculation from ${\cal O}(N^3)$ to ${\cal O}(1)$, where $N$ means the number of degrees of freedom of the theory. The path optimization using this Jacobian approximation still enhances the average phase factor at expense of a slight increase of the statistical error.
description: 8 pages, 5 figures; accepted version
Direct Detection of Singlet-Triplet Interconversion in OLED Magnetoelectroluminescence with a Metal-Free Fluorescence-Phosphorescence Dual Emitter
Creators: name: Ratzke, Wolfram
name: Bange, Sebastian
name: Lupton, John M.
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 530 Physik

description: We demonstrate that a simple phenazine derivative can serve as a dual emitter for organic light-emitting diodes, showing simultaneous luminescence from the singlet and triplet excited states at room temperature without the need of heavy-atom substituents. Although devices made with this emitter achieve only low quantum efficiencies of < 0.2%, changes in fluorescence and phosphorescence intensity on the subpercent scale caused by an external magnetic field of up to 30 mT are clearly resolved with an ultra-low-noise optical imaging technique. The results demonstrate the concept of using simple reporter molecules, available commercially, to optically detect the spin of excited states formed in an organic light-emitting diode and thereby probe the underlying spin statistics of recombining electron-hole pairs. A clear anticorrelation of the magnetic-field dependence of singlet and triplet emission shows that it is the spin interconversion between singlet and triplet which dominates the magnetoluminescence response: the phosphorescence intensity decreases by the same amount as the fluorescence intensity increases. The concurrent detection of singlet and triplet emission as well as device resistance at cryogenic and room temperature constitute a useful tool to disentangle the effects of spin-dependent recombination from spin- dependent transport mechanisms.
Reactor mixing angle from hybrid neutrino masses
Creators: name: Sierra, D. Aristizabal
name: Varzielas, I. de Medeiros
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In terms of its eigenvector decomposition, the neutrino mass matrix (in the basis where the charged lepton mass matrix is diagonal) can be understood as originating from a tribimaximal dominant structure with small deviations, as demanded by data. If neutrino masses originate from at least two different mechanisms, referred to as "hybrid neutrino masses", the experimentally observed structure naturally emerges provided one mechanism accounts for the dominant tribimaximal structure while the other is responsible for the deviations. We demonstrate the feasibility of this picture in a fairly model-independent way by using lepton-number-violating effective operators, whose structure we assume becomes dictated by an underlying $A_4$ flavor symmetry. We show that if a second mechanism is at work, the requirement of generating a reactor angle within its experimental range always fixes the solar and atmospheric angles in agreement with data, in contrast to the case where the deviations are induced by next-to-leading order effective operators. We prove this idea is viable by constructing an $A_4$-based ultraviolet completion, where the dominant tribimaximal structure arises from the type-I seesaw while the subleading contribution is determined by either type-II or type-III seesaw driven by a non-trivial $A_4$ singlet (minimal hybrid model). After finding general criteria, we identify all the $\mathbb{Z}_N$ symmetries capable of producing such $A_4$-based minimal hybrid models.
description: 18 pages, 5 figures. v3: section including sum rules added, accepted by JHEP
Do we need N$^3$LO Parton Distributions?
Creators: name: Forte, Stefano
name: Isgro', Andrea
name: Vita, Gherardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the uncertainty on processes computed using next-to-next-to leading (NNLO) parton distributions (PDFs) due to the neglect of higher order perturbative corrections in the PDF determination, in the specific case of Higgs production in gluon fusion. By studying the behaviour of the perturbative series for this process, we show that this uncertainty is negligible in comparison to the theoretical uncertainty on the matrix element. We then take this as a case study for the use of the Cacciari-Houdeau method for the estimate of theoretical uncertainties, and show that the method provides an effective way of treating theoretical uncertainties on the matrtix element and the PDF on the same footing.
description: 10 pages 5 figures. Final version, to be published in Phys. Lett. B. Comparison with top production (figs 4-5) added. Several typos corrected and references updated. Grant info added
Etymologie und Erotik
Creators: name: Schmitzer, Ulrich
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: Properz’ viertes Elegienbuch wird üblicherweise unter dem Blickwinkel der dort ausgebreiteten antiquarischen Gelehrsamkeit betrachtet. Doch bei genauerem Hinsehen handelt es sich nicht nur um einen Neueinsatz, sondern auch um die Fortsetzung des liebeselegischen Schreibens der ersten drei Bücher – also um die Themen Aitiologie und Liebe.
description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Vittal et al NFAT1
Creators: name: Vittal, Ragini
name: Walker, Natalie M.
name: N. Lama, Vibha
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320803
subject: Systems physiology

description: NFAT1 is a transcriptional factor activated in Idiopathic Pulmonary Fibrosis. Nfat1 deficient mice subjected to chronic injury are protected against fibrosis independent of immune influxes, with suppression of pro-fibrotic mesenchymal phenotypes including proliferation, differentiation, resistance to apoptosis, and autotaxin-related migration.
Вестник Российского нового университета серия «Человек в современном мире», Выпуск 32019
Creators: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Publisher: name: Вестник Российского нового университета серия «Человек в современном мире»
Year: 2019

description: , Выпуск 32019
Conversion and contagion in entrepreneurship: A cross‐country analysis
Creators: name: Bade, Marco
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 330 Wirtschaft
subject: conversion
subject: entrepreneurial intentions
subject: new business ownership
subject: social contagion
subject: theory of planned behavior

description: Consistent with the theories of planned behavior and social contagion, this study is based on the notion that entrepreneurial intentions affect entrepreneurial behavior (“conversion channel”), which in turn affects others' intentions (“contagion channel”). GMM estimation results of a simultaneous equation model suggest that entrepreneurial intentions and new business ownership are reciprocally related. The conversion channel appears to be the stronger force in the relationship. Additional moderator analyses suggest that environmental munificence, as expressed by regulatory quality, advanced stage of the economy, and economic growth strengthen, whereas the GDP level weakens the relationship. Furthermore, entrepreneurial perceptions, exits, and knowing other entrepreneurs promote the conversion channel but mitigate the contagion channel. These findings yield implications relevant for research and policy makers.
The MURALES survey. VII. Optical spectral properties of the nuclei of 3C radio sources at 0.3
Creators: name: Capetti, A.
name: Balmaverde, B.
name: Baldi, R. D.
name: Baum, S.
name: Chiaberge, M.
name: Grandi, P.
name: Marconi, A.
name: O'Dea, C.
name: Venturi, G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This seventh paper of the MUse RAdio Loud Emission lines Snapshot (MURALES) project presents the results of the observations obtained with the VLT/MUSE integral field spectrograph of 3C radio sources and discusses the optical spectral properties of the nuclei of 26 objects with 0.3
description: Pre-proofs version - Accepted for publication in A&A
Exceptional Lie Algebras, SU(3) and Jordan Pairs Part 2: Zorn-type Representations
Creators: name: Marrani, Alessio
name: Truini, Piero
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A representation of the exceptional Lie algebras is presented. It reflects a simple unifying view and it is realized in terms of Zorn-type matrices. The role of the underlying Jordan pair and Jordan algebra content is crucial in the development of the structure. Each algebra contains three Jordan pairs sharing the same Lie algebra of automorphisms and the same external su(3) symmetry. Applications in physics are outlined.
description: 1+33 pages; 4 Figures, 2 Tables. v2 : some References added
Real-world CMB lensing quadratic estimator power spectrum response
Creators: name: Carron, Julien
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: I describe a method to estimate response matrices of Cosmic Microwave Background (CMB) lensing power spectra estimators to the true sky power under realistic conditions. Applicable to all lensing reconstruction pipelines based on quadratic estimators (QE), it uses a small number of Gaussian CMB Monte-Carlos and specially designed QE's in order to obtain sufficiently accurate matrices with little computational effort. This method may be used to improve the modelling of CMB lensing band-powers by incorporating at least some of the non-idealities encountered in CMB lensing reconstruction. These non-idealities always include masking, and often inhomogeneous filtering, either in the harmonic domain or pixel space. I obtain these matrices for Planck latest lensing reconstructions, and then show that the residual couplings induced by masking explain very well the residual multiplicative bias seen on the Planck simulations, removing the need for an empirical correction.
description: Matches version accepted for publication in JCAP
Dictionary learning: a novel approach to detecting binary black holes in the presence of Galactic noise with LISA
Creators: name: Badger, Charles
name: Martinovic, Katarina
name: Torres-Forné, Alejandro
name: Sakellariadou, Mairi
name: Font, José A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The noise produced by the inspiral of millions of white dwarf binaries in the Milky Way may pose a threat to one of the main goals of the space-based LISA mission: the detection of massive black hole binary mergers. We present a novel study for reconstruction of merger waveforms in the presence of Galactic confusion noise using dictionary learning. We discuss the limitations of untangling signals from binaries with total mass from $10^2 M_{\odot}$ to $10^4 M_{\odot}$. Our method proves extremely successful for binaries with total mass greater than $\sim 3\times 10^3$ $ M_{\odot}$ up to redshift 3 in conservative scenarios, and up to redshift 7.5 in optimistic scenarios. In addition, consistently good waveform reconstruction of merger events is found if the signal-to-noise ratio is approximately 5 or greater.
description: 6 pages, 3 figures
Gamma-ray anisotropies from dark matter in the Milky Way: the role of the radial distribution
Creators: name: Calore, F.
name: De Romeri, V.
name: Di Mauro, M.
name: Donato, F.
name: Herpich, J.
name: Maccio', A. V.
name: Maccione, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The annihilation of dark matter particles in the halo of galaxies may end up into gamma rays, which travel almost unperturbed till to their detection at Earth. This annihilation signal can exhibit an anisotropic behavior quantified by the angular power spectrum, whose properties strongly depend on the dark matter distribution and its clumpiness. We use high resolution pure dark matter N-body simulations to quantify the contribution of different components (main halo and satellites) to the global signal as a function of the analytical profile adopted to describe the numerical results. We find that the smooth main halo dominates the angular power spectrum of the gamma-ray signal up to quite large multipoles, where the sub-haloes anisotropy signal starts to emerge, but the transition multipole strongly depends on the assumed radial profile. The extrapolation down to radii not resolved by current numerical simulations can affect both the normalization and the shape of the gamma-ray angular power spectrum. For the sub-haloes described by an asymptotically cored dark matter distribution, the angular power spectrum shows an overall smaller normalization and a flattening at high multipoles. Our results show the criticality of the dark matter density profile shape in gamma-ray anisotropy searches, and evaluate quantitatively the intrinsic errors occurring when extrapolating the dark matter radial profiles down to spatial scales not yet explored by numerical simulations.
description: 7 pages, 8 figures. It matches the version published in MNRAS
Rezension zu Harold Tarrant, Danielle A. Layne, Dirk Baltzly & François Renaud (eds.): Brill’s Companion to the Reception of Plato in Antiquity
Creators: name: Brinker, Wolfram
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Axion mass limit from observations of the neutron star in Cassiopeia A
Creators: name: Leinson, Lev B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Direct Chandra observations of a surface temperature of isolated neutron star in Cassiopeia A (Cas A NS) and its cooling scenario which has been recently simultaneously suggested by several scientific teams put stringent constraints on poorly known properties of the superfluid neutron star core. It was found also that the thermal energy losses from Cas A NS are approximately twice more intensive than it can be explained by the neutrino emission. We use these unique data and well-defined cooling scenario to estimate the strength of KSVZ axion interactions with neutrons. We speculate that enlarged energy losses occur owing to emission of axions from superfluid core of the neutron star. If the axion and neutrino losses are comparable we find $c_{n}^{2}m_{a}^{2}\sim 5.7\times 10^{-6}\,\text{eV}^2$, where $m_{a}$ is the axion mass, and $c_{n}$ is the effective Peccei-Quinn charge of the neutron. (Given the QCD uncertainties of the hadronic axion models, the dimensionless constant $c_{n}$ could range from $-0.05$ to $ 0.14$.)
description: 10 pages, 1 figure
PKC in motorneurons underlies self-learning, a form of motor learning inDrosophila
Creators: name: Colomb, Julien
name: Brembs, Björn
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: FLIGHT ORIENTATION; MEMORY TRACES; H-REFLEX; OPERANT; BEHAVIOR; MECHANISMS; PLASTICITY; APLYSIA; PROTEIN; VARIABILITY; Motor learning; Habit; Operant learning; FoxP; Skill learning; Procedural memory; Motor adaptation; Egocentric strategy
subject: 570 Biowissenschaften, Biologie

description: Tethering a fly for stationary flight allows for exquisite control of its sensory input, such as visual or olfactory stimuli or a punishing infrared laser beam, A torque meter measures the turning attempts of the tethered fly around its vertical body axis, By punishing, say, left turning attempts (in a homogeneous environment), one can train a fly to restrict its behaviour to right turning attempts. It was recently discovered that this form of operant conditioning (called operant self-learning), may constitute a form of motor learning in Drosophila. Previous work had shown that Protein Kinase C (PKC) and the transcription factor dFoxP were specifically involved in self-learning, but not in other forms of learning. These molecules are specifically involved in various forms of motor learning in other animals, such as compulsive biting in Aplysia, song-learning in birds, procedural learning in mice or language acquisition in humans. Here we describe our efforts to decipher which PKC gene is involved in self-learning in Drosophila We also provide evidence that motorneurons may be one part of the neuronal network modified during self-learning experiments. The collected evidence is reminiscent of one of the simplest, clinically relevant forms of motor learning in humans, operant reflex conditioning, which also relies on motorneuron plasticity.
description: öffentliche "review history" online unter o. a. DOI
Variational study of polarons in Bose-Einstein condensates
Creators: name: Li, Weiran
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a class of variational wave functions to study the properties of an impurity in a Bose-Einstein condensate, i.e. the "Bose polaron". The impurity interacts with the condensate through a contact interaction, which can be tuned by a Feshbach resonance. We find a stable attractive polaron branch that evolves continuously across the resonance to a tight-binding diatomic molecule deep in the positive scattering length side. A repulsive polaron branch with finite lifetime is also observed and it becomes unstable as the interaction strength increases. The effective mass of the attractive polaron also changes smoothly across the resonance connecting the two well-understood limits deep on both sides.
Nota sul Silio Italico ‹politico› negli epigrammi di Marziale
Creators: name: Merli, Elena
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: In Martial’s epigrams Silius Italicus is portrayed as a man of learning, author of the Punica and admirer of Vergil’s works, but also as a public figure and a former consul of Rome. My paper focuses on the epigrams devoted to the ‘political’ Silius, and suggests to relate them mainly to a certain stage in Silius Italicus’ life and to a specific communication strategy.
description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)
Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление», Выпуск 42019
Creators: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Publisher: name: Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление»
Year: 2019

description: , Выпуск 42019
Molecular mechanism of the Debye relaxation in monohydroxy alcohols revealed from rheo-dielectric spectroscopy
Creators: name: Patil, Shalin
name: Sun, Ruikun
name: Cheng, Shinian
name: Cheng, Shiwang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Rheodielectric spectroscopy is employed, for the first time, to investigate the effect of external shear on the Debyelike relaxation of a model monohydroxy alcohol, i.e., the 2-ethyl-1-hexanol (2E1H). Shear deformation leads to strong acceleration in the structural relaxation, the Debye relaxation, and the terminal relaxation of 2E1H. Moreover, the shear-induced reduction in structural relaxation time, tau_alpha, scales quadratically with that of Debye time, tau_D, and the terminal flow time, tau_f, suggesting a relationship of tau_D*tau_D~tau_alpha. Further analyses reveal tau_D*tau_D/tau_alpha of 2E1H follows Arrhenius temperature dependence that applies remarkably well to many other monohydroxy alcohols with different molecular sizes, architectures, and alcohol types. These results cannot be understood by the prevailing transient chain model and suggest a H-bonding breakage facilitated sub-supramolecular reorientation as the origin of Debye relaxation of monohydroxy alcohols, akin to the molecular mechanism for the terminal relaxation of unentangled living polymers
description: 15 pages, 3 figures
Amarilis y la belleza de Zacinto
Creators: name: Weiss, Irene M.
Publisher: name: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date
Year: 2020

description: Theocritus’ id. 4 has been considered by some scholars as an example of rural mime; the fact that the poem, a unique case in the Corpus Theocriteum, does not contain any pastoral song or contest contributes to the impression of ‘realism’. This lack could be an obstacle for the poetological approach to the bucolic genre in antiquity, which considers metapoetry as its main feature. Our reading of the idyll shows that this limitation is only apparent.
description: thersites. Journal for Transcultural Presences & Diachronic Identities from Antiquity to Date, Vol. 11 (2020): tessellae – Birthday Issue for Christine Walde (ed. Annemarie Ambühl)