cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides
Creators: name: Huang, Huaqing
name: Liu, Jianpeng
name: Vanderbilt, David
name: Duan, Wenhui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on first-principles calculations and an effective Hamiltonian analysis, we systematically investigate the electronic and topological properties of alkaline-earth compounds $AX_2$ ($A$=Ca, Sr, Ba; $X$=Si, Ge, Sn). Taking BaSn$_2$ as an example, we find that when spin-orbit coupling is ignored, these materials are three-dimensional topological nodal-line semimetals characterized by a snake-like nodal loop in three-dimensional momentum space. Drumhead-like surface states emerge either inside or outside the loop circle on the (001) surface depending on surface termination, while complicated double-drumhead-like surface states appear on the (010) surface. When spin-orbit coupling is included, the nodal line is gapped and the system becomes a topological insulator with Z$_2$ topological invariants (1;001). Since spin-orbit coupling effects are weak in light elements, the nodal-line semimetal phase is expected to be achievable in some alkaline-earth germanides and silicides.
description: 13 pages, 5 figures
Central limit theorem for linear groups
Creators: name: Benoist, Yves
name: Quint, Jean-François
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We prove a central limit theorem for random walks with finite variance on linear groups.
description: Published at http://dx.doi.org/10.1214/15-AOP1002 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
“I Have Nothing to Complain About!”: System Justification Tendencies Undermines Collective Action Through Adherence to Hierarchy-legitimizing Ideologies
Creators: name: Carvalho, Catarina L.
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: All societies are organized based on hierarchies, where some groups have more power than others. Although some may aspire for a hierarchy-free world, hierarchies are inevitable and strongly resistant to changes. People may feel motivated to see hierarchical social systems as fair, legitimate, and justified, and endorse systemjustifying ideologies, such as social dominance orientation (SDO), contributing to the maintenance and perpetuation of intergroup inequality. Belief in the social system’s fairness and legitimacy should increase acceptance and support for the existing society-based social stratification and status hierarchies, weakening support for collective action towards social change. We tested this idea, with two studies, conducted on members of the general population (N = 121) and on members of a disadvantaged group highly mobilized for social change towards intergroup equality (N = 154). Results showed that system justification undermines collective action through SDO (full mediation). We discuss the implications of including ideological processes when predicting collective action.
Jesus unter den Toten
Creators: name: Conrad-Martius, Hedwig
name: Avé-Lallemant, Eberhard
name: Feldes, Joachim
Publisher: name: Edith Stein Jahrbuch
Year: 2025

description: 1646105176
description: Edith Stein Jahrbuch, V. 15 (2009): Edith Stein Jahrbuch, Band 15
title: Solvent-Responsive and Switchable Nanofiltration Membranes based on Hypercrosslinked Polymers with Permanent Porosity
Creators: name: Schute, Kai
name: Jansen, Felicitas
name: Rose, Marcus
Publisher: name: Wiley-VCH
Year: 2023

description: Porous organic framework materials such as hypercrosslinked polymers (HCP) show a high chemical stability and dynamic behavior in a variety of solvents while their pore properties exhibit great potential for mixed matrix membrane (MMM) applications. However, their influence as porous filler in MMMs, especially for applications in liquid-phase filtration is still unexploited. Herein, we demonstrate an HCP-based MMM for molecular separation in the liquid phase by nanofiltration (NF). Depending on the solvent, the membrane changes its fractional free volume by shrinking or swelling. In connection to that, the pore size is also influenced, hence, providing a tunable permeance and molecular cut-off. The reduction of the pore volume and size directly correlates to the improvement of the NF performance, while the volume increase completely diminishes it. The extraordinary flexibility and high degree of crosslinking assure permanent porosity and render the dynamic behavior fully reversible. Thereby, a solvent-responsive “on” and “off” switching of the NF properties is enabled and was experimentally proven. Overall, this provides alternative strategies regarding the fouling and regeneration of membranes as well as the inhibition of pore blocking in membrane-derived processes by a tunable separation performance.
title: Declining iodine intake in the population: model scenarios to improve iodine intake: BfR Opinion no. 005/2021 issued 9 February 2021
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2021
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2021, no. 005
Universal entanglement spectra in critical spin chains
Creators: name: Lundgren, Rex
name: Blair, Jonathan
name: Laurell, Pontus
name: Regnault, Nicolas
name: Fiete, Gregory A.
name: Greiter, Martin
name: Thomale, Ronny
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We advocate that in critical spin chains, and possibly in a larger class of 1D critical models, a gap in the momentum-space entanglement spectrum separates the universal part of the spectrum, which is determined by the associated conformal field theory, from the non-universal part, which is specific to the model. To this end, we provide affirmative evidence from multicritical spin chains with low energy sectors described by the SU(2)$_2$ or the SU(3)$_1$ Wess-Zumino-Witten model.
description: 5 pages, 5 figures
Stable lepton mass matrices
Creators: name: Domcke, Valerie
name: Romanino, Andrea
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study natural lepton mass matrices, obtained assuming the stability of physical flavour observables with respect to the variations of individual matrix elements. We identify all four possible stable neutrino textures from algebraic conditions on their entries. Two of them turn out to be uniquely associated to specific neutrino mass patterns. We then concentrate on the semi-degenerate pattern, corresponding to an overall neutrino mass scale within the reach of future experiments. In this context we show that i) the neutrino and charged lepton mixings and mass matrices are largely constrained by the requirement of stability, ii) naturalness considerations give a mild preference for the Majorana phase most relevant for neutrinoless double-beta decay, $α\sim π/2$, and iii) SU(5) unification allows to extend the implications of stability to the down quark sector. The above considerations would benefit from an experimental determination of the PMNS ratio $|U_{32}/U_{31}|$, i.e. of the Dirac phase $δ$.
description: 16 pages + appendices, 4 figures
Renormalization of Optical Transition Strengths in Semiconductor Nanoparticles due to Band Mixing
Creators: name: Velizhanin, Kirill A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Unique optical properties of semiconductor nanoparticles (SN) make them very promising in the multitude of applications including lasing, light emission and photovoltaics. In many of these applications it is imperative to understand the physics of interaction of electrons in a SN with external electromagnetic fields on the quantitative level. In particular, the strength of electron-photon coupling determines such important SN parameters as the radiative lifetime and absorption cross section. This strength is often assumed to be fully encoded by the so called Kane momentum matrix element. This parameter, however, pertains to a bulk semiconductor material and, as such, is not sensitive to the quantum confinement effects in SNs. In this work we demonstrate that the quantum confinement, via the so called band mixing, can result in a significant suppression of the strength of electron interaction with electromagnetic field. Within the envelope function formalism we show how this suppression can be described by introducing an effective energy-dependent Kane momentum. Then, the effect of band mixing on the efficiencies of various photoinduced processes can be fully captured by the conventional formulae (e.g., spontaneous emission rate), once the conventional Kane momentum is substituted with the renormalized energy-dependent Kane momentum introduced in here. As an example, we evaluate the energy-dependent Kane momentum for spherical $\rm{PbSe}$ and $\rm{PbS}$ SNs (i.e., quantum dots) and show that neglecting band mixing in these systems can result in the overestimation of absorption cross sections and emission rates by a factor of $\sim$2.
description: accepted to Chemical Physics (Elsevier)
Ultra-diffuse galaxies: the high-spin tail of the abundant dwarf galaxy population
Creators: name: Amorisco, N. C.
name: Loeb, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations have revealed the existence of an abundant population of faint, low surface brightness (SB) galaxies, which appear to be numerous and ubiquitous in nearby galaxy clusters, including the Virgo, Coma and Fornax clusters. With median stellar masses of dwarf galaxies, these ultra-diffuse galaxies (UDGs) have unexpectedly large sizes, corresponding to a mean SB of $24\lesssim\langleμ_e\rangle_r\ {\rm mag}^{-1} {\rm arcsec}^2\lesssim27$ within the effective radius. We show that the UDG population represents the tail of galaxies formed in dwarf-sized haloes with higher-than-average angular momentum. By adopting the standard model of disk formation -- in which the size of galaxies is set by the spin of the halo -- we recover both the abundance of UDGs as a function of the host cluster mass and the distribution of sizes within the UDG population. According to this model, UDGs are not failed $L_*$ galaxies, but genuine dwarfs, and their low SB is not uniquely connected to the harsh cluster environment. We therefore expect a correspondingly abundant population of UDGs in the field, with likely different morphologies and colours.
description: MNRAS Letters, accepted version
Can brown dwarfs survive on close orbits around convective stars?
Creators: name: Damiani, Cilia
name: Díaz, Rodrigo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Brown dwarfs straddle the mass range transition from planetary to stellar objects. There is a relative paucity of brown dwarfs companions around FGKM stars compared to exoplanets for orbital periods less than a few years, but most of the short-period brown dwarf companions fully characterised by transits and radial velocities are found around F-type stars. We examine the hypothesis that brown dwarf companions could not survive on close orbit around stars with important convective envelopes because the tides and angular momentum loss through magnetic breaking should lead to a rapid orbital decay and quick engulfment of the companion. We use a classical Skumanich-type braking law, and constant time-lag tidal theory to assess the characteristic timescale for orbital decay for the brown dwarf mass range as a function of the host properties. We find that F-type stars may host massive companions for a significantly longer time than G-type stars for a given orbital period, which may explain the paucity of G-type hosts for brown dwarfs with orbital period less than 5 days. On the other hand, we show that the small radius of early M-type stars contributes to orbital decay timescales that are only half those of F-type stars, despite their more efficient tidal dissipation and magnetic braking. For fully convective later type M-dwarfs, orbital decay timescales could be orders of magnitude greater than for F-type stars. For orbital periods greater than 10 days, brown dwarf occurrence should largely be unaffected by tidal decay, whatever the mass of the host. On closer orbital periods, the rapid engulfment of massive companions could explain the lack of G and K-type hosts in the sample of known systems with transiting brown dwarfs. However, the paucity of M-type hosts can not be an effect of tidal decay alone, but may be the result of a selection effect in the sample and/or the formation mechanism.
description: 8 pages, 5 figures, recommended for publication in A&A
Outil de surveillance interne des précautions complémentaires aux centres hospitaliers de Saint-Lô et de Coutances
Creators: name: Allaire, Alexandra
name: Robert, Marlène
name: Pain, Séverine
name: Leroty, Stéphanie
Publisher: name: Health & Co
Year: 2021
Subjects: Précautions complémentaires
Transmission croisée
Surveillance des infections
Système d’information

description: Contexte et objectif. La surveillance des précautions complémentaires est un axe majeur de prévention du risque infectieux. Par ailleurs, les services de soins apprécient de connaître leurs propres résultats. Il s’agit ici d’utiliser un outil offrant une vue d’ensemble du respect de toutes les précautions complémentaires. Matériel et méthodes. Cette analyse s’appuie sur un suivi des précautions complémentaires ponctuel ou en continu. L’outil créé dans un fichier Excel liste les précautions, germes, situations et services concernés et permet de renseigner le matériel mis en place, l’origine du pathogène s’il y a lieu et les informations tracées. Résultats. Un tableau croisé dynamique permet une analyse par service, pôle ou type de précautions. Les résultats sont restitués sous forme de poster. Dans notre cas, ces mesures sont suivies toute l’année pour chaque établissement dans sa globalité et par service ou type de précautions. L’analyse donne les résultats de mise en place de précautions complémentaires en temps réel. Elle permet de définir les axes d’amélioration pour un type de précautions qui serait moins maîtrisé ou pour un service. Cela a mis en évidence les situations à risque infectieux les plus fréquentes dans nos établissements. Conclusion. Le suivi des précautions complémentaires nécessite des rappels et des mises à jour, il est donc important de le réaliser de façon constante. Toute vérification des mesures est tracée dans le dossier du patient informatisé. L’outil, testé pendant plusieurs mois, est dorénavant utilisé en continu et constitue une aide au suivi de ces précautions et à l’évaluation de la qualité de leur mise en place. Il permettra de donner à chaque établissement, aux pôles ou aux services de soins un indicateur qualité précis et simple.
Establishing an end-to-end uncertainty budget for surface reflectance pre-processing in CCI ECVs
Creators: name: Quast, Ralf
name: Kirches, Grit
name: Brockmann, Carsten
name: Shevchuk, Roman
name: Defourny, Pierre
name: Lamarche, Celine
Publisher: name: Zenodo
Year: 2022

description: Establishing an end-to-end uncertainty budget is essentially required for all ECVs of ESA’s Climate Change Initiative (CCI). The reference for expressing and propagating uncertainty consists of the GUM and its supplements, which describe multivariate analytic and Monte Carlo methods. But despite these guidelines, uncertainty propagation for ECVs remains challenging. Firstly, many retrieval algorithms do not incorporate the use of quantified uncertainty per datum. Analytic methods for propagating uncertainty require new algorithmic developments while Monte Carlo methods are straightforward to apply but lead to proliferation of computational and data curation resources. Secondly, operational radiometry data are usually not associated with a quantified uncertainty per datum, and error correlation structures between data are not quantified either. Deriving this information from original sensor telemetry and an according harmonisation with respect to an SI traceable satellite (SITSAT) reference is a future task.

 Nevertheless, it is feasible to explore and prepare ECV surface reflectance pre-processing for the use of uncertainty per Level 1 datum and error correlation structures among Level 1 data already now, based on instrument specifications and other simplifying assumptions.
Cosmological Galaxy Evolution with Superbubble Feedback II: The Limits of Supernovae
Creators: name: Keller, B. W.
name: Wadsley, J.
name: Couchman, H. M. P
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore when supernovae can (and cannot) regulate the star formation and bulge growth in galaxies based on a sample of 18 simulated galaxies. The simulations include key physics such as evaporation and conduction, neglected in prior work, and required to correctly model superbubbles resulting from stellar feedback. We show that for galaxies with virial masses $>10^{12}\;M_\odot$, supernovae alone cannot prevent excessive star formation. This failure occurs due to a shutdown of galactic winds, with wind mass loadings falling from $η\sim10$ to $η<1$. In more massive systems, this transfer of baryons to the circumgalactic medium falters earlier on and the galaxies diverge significantly from observed galaxy scaling relations and morphologies. The decreasing efficiency is simply due to a deepening potential well preventing gas escape. This implies that non-supernova feedback mechanisms must become dominant for galaxies with stellar masses greater than $\sim4\times10^{10}\;M_\odot$. The runaway growth of the central stellar bulge, strongly linked to black hole growth, suggests that feedback from active galactic nuclei is the probable mechanism. Below this mass, supernovae alone are able to produce a realistic stellar mass fraction, star formation history and disc morphology.
description: 14 pages, 14 figures, MNRAS submitted
Parity-time symmetry under magnetic flux
Creators: name: Jin, L.
name: Song, Z.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a parity-time (PT) symmetric ring lattice, with one pair of balanced gain and loss located at opposite positions. The system remains PT-symmetric when threaded by a magnetic flux; however, the PT symmetry is sensitive to the magnetic flux, in the presence of a large balanced gain and loss, or in a large system. We find a threshold gain/loss, above which, any nontrivial magnetic flux breaks the PT symmetry. We obtain the maximally tolerable magnetic flux for the exact PT-symmetric phase, which is approximately linearly dependent on a weak gain/loss.
description: 7 pages, 7 figures, to be appeared in Phys. Rev. A
Flavor Changing Leptonic Decays of Heavy Higgs Bosons
Creators: name: Sher, Marc
name: Thrasher, Keith
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: CMS has reported indications (2.4σ) of the decay of the Higgs boson into μτ. The simplest explanation for such a decay would be a general Two Higgs Doublet Model (2HDM). In this case, one would expect the heavy neutral Higgs bosons, H and A, to also decay in a similar manner. We study two specific models. The first is the type III 2HDM, and the second is a 2HDM, originally proposed by Branco et al., in which all flavor-changing neutral processes are given by the weak mixing matrix. In the latter model, since mixing between the second and third generations in the lepton sector is large, flavor-changing interactions are large. In this model it is found that the decays of H and A to μτcan be as high as 60 percent. This work has nothing to do with the 750 GeV diphoton resonance.
description: 7 pages, 2 figures, additional references added, version to be published in Physical Review D
An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials
Creators: name: Li, Qingfeng
name: Wang, Yongjia
name: Wang, Xiaobao
name: Shen, Caiwan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The time evolution of both proton and anti-proton $v_2$ flows from Au+Au collisions at $\sqrt{s_{NN}}$=7.7 GeV are examined by using both pure cascade and mean-field potential versions of the UrQMD model. Due to a stronger repulsion at the early stage introduced by the repulsive potentials and hence much less annihilation probabilities, anti-protons are frozen out earlier with smaller $v_2$ values. Therefore, the experimental data of anti-proton $v_2$ as well as the flow difference between proton and anti-proton can be reasonably described with the potential version of UrQMD.
description: 14 pages, 4 figures
Grippe nosocomiale chez la personne âgée : fréquence, caractéristiques cliniques et prévention
Creators: name: Bouiller, Kevin
name: Naudion, Pauline
name: Chirouze, Catherine
Publisher: name: Health & Co
Year: 2021
Subjects: Grippe
Infection nosocomiale
Personne âgée
Personnel de santé
Vaccination
Infection associée aux soins

description: Chaque année, la grippe saisonnière atteint deux à six millions de personnes en France. Les personnes âgées de plus de 65 ans représentent 90% des décès annuels imputables à la grippe. La grippe nosocomiale est un problème majeur dans les établissements de soins, avec des conséquences importantes en termes de morbimortalité et de coûts liés aux soins. La grippe nosocomiale est communément définie par l’apparition de symptômes grippaux plus de 48 heures après le début de l’hospitalisation. Cette définition reste imparfaite au vu de la durée d’incubation variable du virus et de la difficulté de datation précise des symptômes, notamment chez le patient âgé. Même si la grippe nosocomiale chez les patients âgés n’a pas fait l’objet de nombreuses études, elle est probablement très fréquente mais sous-diagnostiquée. La fréquence de la grippe nosocomiale varie de 2% à 36% selon les études. La prévention de cette pathologie repose sur la vaccination du personnel soignant et des patients mais aussi sur le respect des mesures barrières, telle la mise en place des précautions complémentaires d’hygiène, pour en limiter la transmission.
New data on cross-sections of deuteron induced nuclear reactions on gold up to 50 MeV and comparison of production routes of medically relevant Au and Hg radioisotopes
Creators: name: Tárkányi, F.
name: Hermanne, A.
name: Ditrói, F.
name: Takács, S.
name: Adam-Rebeles, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Investigations of cross-sections of deuteron induced nuclear reactions on gold were extended up to 50 MeV by using the standard stacked foil irradiation technique and high resolution gamma-ray spectrometry. New cross-sections are reported for the $^{197}$Au(d,xn)$^{197m,197g,195m,195g,193m,193g}$Hg and $^{197}$Au(d,x)$^{198m,198g,196m,196g,195,194}$Au nuclear reactions. The application for production of the medically relevant isotopes $^{198}$Au and $^{195m,195g,197m,197g}$Hg is discussed, including the comparison with other charged particle induced production routes. The possible use of the $^{197}$Au(d,x)$^{197m,197g,195m,193m}$Hg and $^{196m,196g}$Au reactions for monitoring deuteron beam parameters is also investigated.
Cosmic Reionization On Computers. Ultraviolet Continuum Slopes and Dust Opacities in High Redshift Galaxies
Creators: name: Khakhaleva-Li, Zimu
name: Gnedin, Nickolay Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare the properties of stellar populations of model galaxies from the Cosmic Reionization On Computers (CROC) project with the exiting UV and IR data. Since CROC simulations do not follow cosmic dust directly, we adopt two variants of the dust-follows-metals ansatz to populate model galaxies with dust. Using the dust radiative transfer code Hyperion, we compute synthetic stellar spectra, UV continuum slopes, and IR fluxes for simulated galaxies. We find that the simulation results generally match observational measurements, but, perhaps, not in full detail. The differences seem to indicate that our adopted dust-follows-metals ansatzes are not fully sufficient. While the discrepancies with the exiting data are marginal, the future JWST data will be of much higher precision, rendering highly significant any tentative difference between theory and observations. It is, therefore, likely, that in order to fully utilize the precision of JWST observations, fully dynamical modeling of dust formation, evolution, and destruction may be required.
description: 12 pages, 8 figures, accepted for publication in the Astrophysical Journal
Microbulk Micromegas for the search of 0$νββ$ of 136Xe in the PandaX-III experiment
Creators: name: Galan, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The search for the neutrinoless double beta decay (0$νββ$) is one of the most important quests nowadays in neutrino physics. Among the different techniques used, high pressure xenon (HPXe) gas time projection chambers (TPC) stand out because they allow to image the topology of the 0$νββ$ event (one straggling track ending in two blobs), and use it to discriminate signal from background events. Recent results with microbulk Micromegas in Xe + trimethylamine (TMA) mixtures show high promise in terms of gain, stability of operation, and energy resolution at high pressures (up to 10 bar). The addition of TMA at levels of ~1\% reduces electron diffusion in up to a factor of 10 with respect pure Xe, improving the quality of the topological pattern, and therefore the discrimination capability. Moreover microbulk Micromegas have very low levels of intrinsic radioactivity. All these results show that a Micromegas-read High Pressure Xenon TPC (HPXe-TPC) can be a competitive technique in the search for 0$νββ$. The recently proposed PandaX-III experiment, based on these results, aims at building a large TPC of 200 kg of enriched Xe, to be located at Jinping Underground laboratory in China. In this talk the main features of the experiment will be presented, with an emphasis on the design and tests of the microbulk readout, as well as the status of the project and first results of the prototyping phase.
description: Proceedings of the MPGD 2015 conference. Trieste
Monolithic AlGaAs second-harmonic nanoantennas
Creators: name: Gili, V. F.
name: Carletti, L.
name: Locatelli, A.
name: Rocco, D.
name: Finazzi, M.
name: Ghirardini, L.
name: Favero, I.
name: Gomez, C.
name: Lemaître, A.
name: Celebrano, M.
name: De Angelis, C.
name: Leo, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate monolithic aluminum gallium arsenide (AlGaAs) optical anoantennas. Using a selective oxidation technique, we fabricate such epitaxial semiconductor nanoparticles on an aluminum oxide substrate. Second harmonic generation from an AlGaAs nanocylinder of height h=400 nm and varying radius pumped with femtosecond pulses delivered at 1554-nm wavelength has been measured, revealing a peak conversion efficiency exceeding 10-5 for nanocylinders with an otpimized geometry.
title: Nanoporous Polymers: Bridging the Gap between Molecular and Solid Catalysts?
Creators: name: Rose, Marcus
Publisher: name: Wiley-VCH
Year: 2023

description: The combination of the advantageous properties of molecular and solid catalysts is considered the “Holy Grail” in catalysis research. Great potential is provided by nanoporous polymers. Chemically well-defined moieties in combination with a high stability render these materials suitable as catalyst supports for liquid-phase and even aqueous-phase catalytic processes, especially regarding the transition from fossil resources to renewable resources. In this Minireview, recent developments are summarized, covering the three main approaches: solid metal-free organocatalysts, immobilized molecular catalyst species, and supported metal nanoparticles and clusters. Their potential is evaluated and the question as to whether nanoporous polymers can bridge the gap between homogeneous and heterogeneous catalysis is critically discussed.
Presentation of the manuscript "Analysing User Involvement in Open Government Data Initiatives" at TPDL 2022
Creators: name: Herrera-Murillo, Dagoberto Jose
name: Aziz, Abdul
name: Nogueras-Iso, Javier
name: Lopez-Pellicer, Francisco J.
Publisher: name: Zenodo
Year: 2022
Subjects: Open Government Data
Open Data Portals
Metadata Quality
User engagement
Social media

description: Presentation of the manuscript "Analysing User Involvement in Open Government Data Initiatives" at the 26th International Conference on Theory and Practice of Digital Libraries (TPDL 2022) in Padua, Italy on 22nd September 2022. In this research, we propose a methodology to compile a set of variables that describe both the main characteristics of Open Data initiatives and the associated Twitter activity. The collected data is then analysed using factor analysis and clustering techniques to derive possible relationships between the variables. Finally, the initiatives are classified according to their activity on social networks and the values that characterise some of their features. The methodology was evaluated by analysing 27 European Open Government Data portals and their activity on Twitter in 2021.
Detecting a preformed pair phase: The response to a pairing forcing field
Creators: name: Tagliavini, Agnese
name: Capone, Massimo
name: Toschi, Alessandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The normal state of strongly coupled superconductors is characterized by the presence of "preformed" Cooper pairs well above the superconducting critical temperature. In this regime, the electrons are paired, but they lack the phase coherence necessary for superconductivity. The existence of preformed pairs implies the existence of a characteristic energy scale associated to a pseudogap. Preformed pairs are often invoked to interpret systems where some signatures of pairing are present without actual superconductivity, but an unambiguous theoretical characterization of a preformed-pair system is still lacking. To fill this gap, we consider the response to an external pairing field of an attractive Hubbard model, which hosts one of the cleanest realizations of a preformed pair phase, and a repulsive model where s-wave superconductivity can not be realized. Using dynamical mean-field theory to study this response, we identify the characteristic features which distinguish the reaction of a preformed pair state from a normal metal without any precursor of pairing. The theoretical detection of preformed pairs is associated with the behavior of the second derivative of the order parameter with respect to the external field, as confirmed by analytic calculations in limiting cases. Our findings provide a solid testbed for the interpretation of state-of-the-art calculations for the normal state of the doped Hubbard model in terms of d-wave preformed pairs and, in perspective, of non-equilibrium experiments in high-temperature superconductors.
description: 14 pages, 11 figures
Bilan des signalements d’infection nosocomiale à Streptococcus pyogenes en France, 2012-2020
Creators: name: Léon, Audrey
name: Poujol, Isabelle
name: Sophan Soing-Altrach
name: Berger-Carbonne, Anne
Publisher: name: Health & Co
Year: 2021
Subjects: Streptococcus pyogenes
Infection nosocomiale
Signalement
Gynécologie

description: Une étude menée à partir des signalements d’infection associée aux soins (IAS) en établissement de santé reçus via l’application e-SIN® du 1er janvier 2012 au 31 décembre 2020 a permis de dresser un bilan épidémiologique des IAS à Streptococcus pyogenes. Pendant cette période, 412 fiches d’IAS à Streptococcus pyogenes ont été émises signalant 689 cas dont 29 décès liés à l’infection. La plupart des cas sont survenus en service de gynécologie-obstétrique mais, de plus en plus fréquemment, des épisodes épidémiques apparaissent en services de médecine, de chirurgie et de soins de suite, à orientation oncologique. Les principales infections sont gynécologiques (n=343), puis du site opératoire (n=101), sous forme de bactériémie (n=101), ORL (n=90) et cutanées (n=54). Une grande majorité des épisodes (n=303 fiches ; 72,6%) a fait l’objet d’investigations à la recherche des causes de l’infection motivant la mise en place d’un plan d’action et un rappel aux bonnes pratiques dans le service. Cette étude a permis d’objectiver l’évolution des caractéristiques des IAS à Streptococcus pyogenes, dont le risque s’étend au-delà de la gynécologie-obstétrique et de la chirurgie. Afin de réduire ce risque, il serait souhaitable que les recommandations nationales évoluent en élargissant le champ de l’application des mesures spécifiques de prévention et d’investigation.
AI Applications Resource Allocation in Computing Continuum: a Stackelberg Game Approach
Creators: name: Roberto Sala
Publisher: name: Zenodo
Year: 2024

description: This project consists of the code and Appendix related to the work "Resource Allocation to AI Applications in Computing Continuum: a Stackelberg Game Approach".

 

Appendix.pdf is the Appendix of the paper.

The ConfigFile folder includes all the .json file templates for the system and users models.

The classes folder includes all classes and functions that are needed.

Profit_ratio.py file is used to compute the extra-profit and costs saving of the edge platform by solving the game, instead of imposing a fixed price.

Draw_plots.py file is used to plot the users and platform profit functions.

Heuristic_VS_Baron.py is used to compare the performance of the full knowledge, heuristic algorithm with the state-of-the-art BARON solver.

Main_MEC.py file is the main file to run the project.

Partial_knowledge_users_parameters.py file is used to run the Follow the Line algorithm and to compare the results with the full knowledge scenario.

Test_heuristic.py file is used to compare the different versions of the heuristic approach, in the full knowledge scenario.

Utility.py file contains some useful functions to check and analyse the solutions.
Formation of plano-convex micro-lens array in fused silica glass using CO2 laser assisted reshaping technique
Creators: name: Sohn, Ik-Bu
name: Choi, Hun-Kook
name: Yoo, Dongyoon
name: Noh, Young-Chul
name: Ahsan, Md. Shamim
name: Sung, Jae-Hee
name: Lee, Seong-Ku
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on fabricating high-fill-factor plano-convex spherical and square micro-lens arrays on fused silica glass surface using CO2 laser assisted reshaping technique. Initially, periodic micro-pillars have been encoded on the glass surface by means of a femtosecond laser beam. Afterwards, the micro-pillars are polished several times by irradiating a CO2 laser beam on top of the micro-pillars. Consequently, spherical micro-lens array with micro-lens size of 50 um x 50 um and square micro-lens array with micro-lens size of 100 um x 100 um are formed on fused silica glass surface. We also study the intensity distribution of light passed through the spherical micro-lens array engraved glass sample. The simulation result shows that, the focal length of the spherical micro-lens array is 35 um. Furthermore, we investigate the optical properties of the micro-lens array engraved glass samples. The proposed CO2 laser based reshaping technique is simple and fast that shows promises in fabrication arrays of smooth micro-lenses in various transparent materials.
Condition number analysis and preconditioning of the finite cell method
Creators: name: de Prenter, F.
name: Verhoosel, C. V.
name: van Zwieten, G. J.
name: van Brummelen, E. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The (Isogeometric) Finite Cell Method - in which a domain is immersed in a structured background mesh - suffers from conditioning problems when cells with small volume fractions occur. In this contribution, we establish a rigorous scaling relation between the condition number of (I)FCM system matrices and the smallest cell volume fraction. Ill-conditioning stems either from basis functions being small on cells with small volume fractions, or from basis functions being nearly linearly dependent on such cells. Based on these two sources of ill-conditioning, an algebraic preconditioning technique is developed, which is referred to as Symmetric Incomplete Permuted Inverse Cholesky (SIPIC). A detailed numerical investigation of the effectivity of the SIPIC preconditioner in improving (I)FCM condition numbers and in improving the convergence speed and accuracy of iterative solvers is presented for the Poisson problem and for two- and three-dimensional problems in linear elasticity, in which Nitche's method is applied in either the normal or tangential direction. The accuracy of the preconditioned iterative solver enables mesh convergence studies of the finite cell method.
3D printing dimensional calibration shape: Clebsch Cubic
Creators: name: van der Merwe, Andre F.
name: Boehm, Janko
name: Marais, Magdaleen S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14Q10, 14J26 (Primary), 13P25, 68W30, 92-08 (Secondary)

description: 3D printing and other layer manufacturing processes are challenged by dimensional accuracy. Several techniques are used to validate and calibrate dimensional accuracy through the complete building envelope. The validation process involves the growing and measuring of a shape with known parameters. The measured result is compared with the intended digital model. Processes with the risk of deformation after time or post processing may find this technique beneficial. We propose to use objects from algebraic geometry as test shapes. A cubic surface is given as the zero set of a 3rd degree polynomial with 3 variables. A class of cubics in real 3D space contains exactly 27 real lines. We provide a library for the computer algebra system Singular which, from 6 given points in the plane, constructs a cubic and the lines on it. A surface shape derived from a cubic offers simplicity to the dimensional comparison process, in that the straight lines and many other features can be analytically determined and easily measured using non-digital equipment. For example, the surface contains so-called Eckardt points, in each of which three of the lines intersect, and also other intersection points of pairs of lines. Distances between these intersection points can easily be measured, since the points are connected by straight lines. At all intersection points of lines, angles can be verified. Hence, many features distributed over the build volume are known analytically, and can be used for the validation process. Due to the thin shape geometry the material required to produce an algebraic surface is minimal. This paper is the first in a series that proposes the process chain to first define a cubic with a configuration of lines in a given print volume and then to develop the point cloud for the final manufacturing. Simple measuring techniques are recommended.
description: 8 pages, 1 figure, 1 table
B1MG D3.8 Documented best practices in sharing and linking phenotypic and genetic data —2v0
Creators: name: Pinto, Catia
name: Belien, Jeroen
name: Ligtvoet, Maarten
name: Urbini, Milena
name: Volkert, Pim
name: Gu, Wei
name: Tebaldi, Michela
name: Patocs, Attila
name: van der Velde, K.Joeri
name: Swertz, Morris
name: Van Gijn, Marielle,.E
name: Korbel, Jan O.
name: Padella, Antonella
name: Valencia, Alfonso
name: Muñoz, Adolfo
name: Pedrera, Miguel
name: Serrano, Pablo
name: Parra, Carlos
name: Beltran, Sergi
name: Groot, Harmke
name: Soares, Flávio
name: Lourenço, Inês
name: Kovač, Jernej
name: Hermansson, Ulrika
name: Lindholm, Evita
name: Mimouni, Yanis
name: Rath, Ana
name: Haddad, Tala
Publisher: name: Zenodo
Year: 2023
Subjects: B1MG
Beyond 1 Million Genomes
1+MG
1+Million Genomes initiative
ELIXIR
Best Practices
Phenotypic and genetic data
Data sharing
1+MG WG3

description: This is the second version of documented best practices in sharing and linking phenotypic and genetic data. It identifies and describes best practices on sharing and linking phenotypic and genetic data in both the health care sector as in the research setting to, as much as possible, avoid reinventing the wheel, learn from previous/current existing projects to improve performance and avoid mistakes made by others. The listed ’best practices’ have been identified by the 1+MG WG3 experts, who are nominated by the Member States, and are exemplary practices that have achieved results which could be used for larger scale cross-border initiatives.
Velocity fluctuations and population distribution in clusters of settling particles at low Reynolds number
Creators: name: Boschan, A.
name: Ocampo, B. L.
name: Annichini, M.
name: Gauthier, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A study on the spatial organization and velocity fluctuations of non Brownian spherical particles settling at low Reynolds number in a vertical Hele-Shaw cell is reported. The particle volume fraction ranged from 0.005 to 0.05, while the distance between cell plates ranged from 5 to 15 times the particle radius. Particle tracking revealed that particles were not uniformly distributed in space but assembled in transient settling clusters. The population distribution of these clusters followed an exponential law. The measured velocity fluctuations are in agreement with that predicted theoretically for spherical clusters, from the balance between the apparent weight and the drag force. This result suggests that particle clustering, more than a spatial distribution of particles derived from random and independent events, is at the origin of the velocity fluctuations.
description: 13 pages, 8 figures
title: Iluvien ® – Erste klinische Erfahrungen
Creators: name: Ernst, Eva
name: Augsten, R.
name: Wildner, K.
name: Meller, D.
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Zur Behandlung von Sehstörungen in Verbindung mit einem chronischen diabetischen Makulaödem, das auf verfügbare Therapien nur unzureichend anspricht, ist seit Juli 2012 ein intravitreales Implantat mit dem Wirkstoff Fluocinolonactetat (Iluvien®) zugelassen. Methodik:[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 24. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens
An ethico-political analysis of a national teacher competence framework: unravelling a ‘preferred’ teacher identity
Creators: name: Carswell, Desmond
name: CONWAY, PAUL
Publisher: name: University of Limerick
Year: 2023
Subjects: Education

description: In recent years, as evidenced in the transnational proliferation of codified competence frameworks for teacher education purposes, we have seen the increased politicisation and regulation of the task of teaching and what it means to be a teacher. Making the case for an ethico-political conceptualisation of teacher identity and, using a Foucauldian-based framework of ethico-political identity, we apply a discourse analysis approach to unravel a ‘preferred’ teacher identity construction using Ireland's national teacher competence framework, the Initial Teacher Education Criteria and Guidelines for Programme Providers as an illustrative case. Findings illuminate this identity as: (i) telos vis-à-vis embodying national objectives via critical engagement underpinned by knowledge surfaces and a temporal appreciation of policy; (ii) ethical substance vis-à-vis seven modes of engagement animated in two interdependent phases with unique practice dynamics and policy emphases; (iii) discursive authority sources that utilise three major modes of sense-making; and (iv) self-practices as confessional dialogue and self-writing. Considering codified teacher competence frameworks as politics of truth in teacher education, we make the case for macro ethico-political identity work as a valuable analytical tool for policy analysis in teaching and teacher education.
PREPSOIL - EU Soil Health Mission_workshop to assess the needs of soils_A9 region
Creators: name: Berényi Üveges, Judit
Publisher: name: Zenodo
Year: 2023
Subjects: soil health

description: The PREPSOIL Region Soil Needs workshop "Organic Agriculture – Kecskemét (Hungary)" was aiming soil needs assessment on the topic combating desertification and drought in Kelő-ér-Dong-ér watershed (A9 region in Hungary). In the presentation Judit Berényi Üveges, lead researcher of the ÖMKi Hungarian Research Institute of Agriculture introduces the difficulties this area faces.
$\mbox{Bi}_{1}\mbox{Te}_{1}$: a dual topological insulator
Creators: name: Eschbach, Markus
name: Lanius, Martin
name: Niu, Chengwang
name: Młyńczak, Ewa
name: Gospodarič, Pika
name: Kellner, Jens
name: Schüffelgen, Peter
name: Gehlmann, Mathias
name: Döring, Sven
name: Neumann, Elmar
name: Luysberg, Martina
name: Mussler, Gregor
name: Plucinski, Lukasz
name: Morgenstern, Markus
name: Grützmacher, Detlev
name: Bihlmayer, Gustav
name: Blügel, Stefan
name: Schneider, Claus M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A combined theoretical and experimental study reveals evidence for the dual topological insulating character of the stoichiometric natural superlattice phase $\mathrm{Bi_{1}Te_{1}}=\mathrm{[Bi_{2}]_{1}[Bi_{2}Te_{3}]_{2}}$, being a stack of alternating Bi bilayers and two quintuple layers of $\mathrm{Bi_{2}Te_{3}}$. We identify $\mathrm{Bi_{1}Te_{1}}$ by density functional theory to exhibit a non trivial time-reversal symmetry-driven character of $\mathbb{Z}_{2}=(0;001)$ and additionally a mirror-symmetry induced mirror Chern number of $n_{\cal M}=-2$, which indicates that $\mathrm{Bi_{1}Te_{1}}$ is both a weak topological insulator and a topological crystalline insulator. The coexistence of the two phenomena preordains distinct crystal planes to host topological surface states that are protected by the respective symmetries. The surface perpendicular to the stacking direction is the 'dark' surface of the weak topological insulator, while hosting mirror-symmetry protected surface states along the $\bar{Γ\mathrm{M}}$ direction at non-time-reversal invariant momenta points. We confirm the stacking sequence of our MBE-grown $\mathrm{Bi_{1}Te_{1}}$ thin films by X-ray diffraction and transmission electron microscopy, and find indications of the topological crystalline and weak topological character in the surface electronic spin structure by spin- and angle-resolved photoemission spectroscopy, which nicely match the results from density functional theory.