cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Averaging method and coherence applied to Rabi oscillations in a two-level system
Creators: name: Chalkopiadis, L.
name: Simserides, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study Rabi oscillations in a two-level system within the semiclassical approximation as an archetype test field of the Averaging Method (AM). The population transfer between the two levels is approached within the first and the second order AM. We systematically compare AM predictions with the rotating wave approximation (RWA) and with the complete numerical solution utilizing standard algorithms (NRWA). We study both the resonance ($Δ= 0$) and out-of-resonance ($Δ\ne 0$) cases, where $Δ= ω-Ω$, and $\hbar Ω= E_2-E_1$ is the two-level energetic separation, while $ω$ is the (cyclic) frequency of the electromagnetic field. We introduce three types of dimensionless factors $ε$, i.e., $Ω_{\textrm{R}}/Δ$, $Ω_{\textrm{R}}/Σ$, and $Ω_{\textrm{R}}/ω$, where $Ω_{\textrm{R}}$ is the Rabi (cyclic) frequency and $Σ= ω+ Ω$ and explore the range of $ε$ where the AM results are equivalent to NRWA. Finally, by allowing for a phase difference in the initial electron wave functions, we explore the prospects coherence can offer. We illustrate that even with equal initial probabilities at the two levels, but with phase difference, strong oscillations can be generated and manipulated.
description: 12 pages, 9 figures
Partial decoupling between strain and polarization in mono-oriented Pb(Zr0.2Ti0.8)O3 thin film
Creators: name: Janolin, Pierre-Eymeric
name: Fraisse, Bernard
name: Marrec, Francoise Le
name: Dkhil, Brahim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural evolution of epitaxial mono-oriented (i.e. with the c-axis perpendicular to the interface) ferroelectric Pb(Zr0.2,Ti0.8)O3 thin film has been investigated, using high resolution, temperature dependent, X-ray diffraction. The full set of lattice parameters was obtained, it allowed to estimate the variation of the polarization as a function of temperature, underlying the difference between the polarization-induced tetragonality and the elastic one. The temperature evolution of the misfit strain has been calculated and found to be in good agreement with the theoretical temperature-misfit strain phase diagram
description: 11 pages, 3 figures
Innovation adoption: Broadcasting vs. Virality
Creators: name: Zhai, Yujia
name: Ding, Ying
name: Zhang, Hezhao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Diffusion channels are critical to determining the adoption scale which leads to the ultimate impact of an innovation. The aim of this study is to develop an integrative understanding of the impact of two diffusion channels (i.e., broadcasting vs virality) on innovation adoption. Using citations of a series of classic algorithms and the time series of co-authorship as the footprints of their diffusion trajectories, we propose a novel method to analyze the intertwining relationships between broadcasting and virality in the innovation diffusion process. Our findings show that broadcasting and virality have similar diffusion power, but play different roles across diffusion stages. Broadcasting is more powerful in the early stages but may be gradually caught up or even surpassed by virality in the later period. Meanwhile, diffusion speed in virality is significantly faster than broadcasting and members from virality channels tend to adopt the same innovation repetitively.
description: 25 pages, 12 figures. Journal of the Association for Information Science and Technology (2020)
Oxidation Enhanced Diffusion on p-Type PERC Silicon Solar Cells
Creators: name: Prajapati, V.
name: Horzel, J.
name: Choulat, P.
name: Janssens, T.
name: Poortmans, J.
name: Mertens, R.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 680-685
description: An easily implementable approach to increase cell efficiency without incurring too much cost is to
introduce thermal oxidation [1,2,3,4]. Thermal oxide is well known to the microelectronics industry as one of the best
dielectrics to passivate silicon surfaces. This paper will focus on the front side (diffused side) of passivated emitter
rear contacted (PERC) silicon solar cells and on the enhancement brought upon thin thermal oxidation performed at
800°C in a POCl3 furnace. The resulting emitters are characterized by secondary ion mass spectroscopy (SIMS) as
well as scanning spreading resistance profiling (SRP) measurements and emitter saturation current densities. We
report that increasing oxidation growth (or time) significantly decreases phosphorus surface concentration (Ns) while
increasing junction depth. The resulting profiles after oxidation have surface concentrations in the range of 1-
2x1020/cm3 which are fully activated and can be contacted with industrially available silver screen printing pastes. We
also report that using a thin thermal oxide a lower contact resistance can be obtained especially when considering
emitter sheet resistances in the 85+ Ω/ range. The low contact resistance from the front metallization is attributed to
the presence of phosphorous in the thermal oxide. The final cell results show that increasing oxidation growth (or
time) increases open circuit voltage as well as fill factor, but if the oxide is left on, the short circuit current is reduced
partly due to optical loss. The cells studied in this paper are 148.8cm2, 155μm 1.5 ohm∙cm p-type Cz-Si wafers that
have screen printed Ag front contacts and a thin thermal oxide on both sides with a rear deposited oxide/nitride stack.
The highest efficiency of the cells studied is 19.9% with a Voc of 654mV, a Jsc of 38.4 mA/cm2 and a fill factor of
79.3% confirmed by the Fraunhofer ISE.
Ignition latitude and the shape of Type I X-ray bursts
Creators: name: Maurer, Immanuel
name: Watts, Anna L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The shape of the lightcurve during the rising phase of Type I X-ray bursts is determined by many factors including the ignition latitude, the accretion rate, and the rotation rate of the star. We develop a phenomenological model of the burst rise process and show that simple measures of the burst morphology can be robust diagnostics of ignition latitude and burning regime. We apply our results to the large sample of bursts from the Low Mass X-ray Binary 4U 1636-536, and find evidence for off-equatorial ignition for many of the bursts. We argue that such behaviour may be associated with the transition from hydrogen to helium ignition at accretion rates a few percent of Eddington. We show that this model can also explain variations in the detectability of burst oscillations, and discuss the implications for other burst sources.
description: Some additions and clarifications, MNRAS accepted
Distributed Reinforcement Learning for Flexible and Efficient UAV Swarm Control
Creators: name: Venturini, Federico
name: Mason, Federico
name: Pase, Francesco
name: Chiariotti, Federico
name: Testolin, Alberto
name: Zanella, Andrea
name: Zorzi, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Over the past few years, the use of swarms of Unmanned Aerial Vehicles (UAVs) in monitoring and remote area surveillance applications has become widespread thanks to the price reduction and the increased capabilities of drones. The drones in the swarm need to cooperatively explore an unknown area, in order to identify and monitor interesting targets, while minimizing their movements. In this work, we propose a distributed Reinforcement Learning (RL) approach that scales to larger swarms without modifications. The proposed framework relies on the possibility for the UAVs to exchange some information through a communication channel, in order to achieve context-awareness and implicitly coordinate the swarm's actions. Our experiments show that the proposed method can yield effective strategies, which are robust to communication channel impairments, and that can easily deal with non-uniform distributions of targets and obstacles. Moreover, when agents are trained in a specific scenario, they can adapt to a new one with minimal additional training. We also show that our approach achieves better performance compared to a computationally intensive look-ahead heuristic.
description: Preprint of the paper published in IEEE Transactions on Cognitive Communications and Networking ( Early Access )
mapsf, a New Package for Thematic Mapping
Creators: name: Giraud, Timothée
Publisher: name: Zenodo
Year: 2021
Subjects: map
cartography
reproducible research

description: Slides: https://rcarto.github.io/foss4g2021/ The R software spatial ecosystem is rich, dynamic and mature and several R packages allow to leverage the power of major FOSS libraries (like GDAL,GEOS or PROJ) for spatial data management. mapsf takes advantage of this ecosysem to create and integrate thematic maps in R workflows. It helps designing various cartographic representations such as proportional symbols, choropleth or typology maps. It also offers several functions to display layout elements improving the graphic presentation of maps (e.g. scale bar, north arrow, title, labels). This talk will present the main features of the package and demonstrate how to use it to design high quality maps. mapsf [1] helps designing various cartographic representations such as proportional symbols, choropleth or typology maps. It also offers several functions to display layout elements improving the graphic presentation of maps. The aim of mapsf is to obtain thematic maps with the visual quality of those built with a classical mapping or GIS software while being lightweight, versatile and user-friendly. To achieve this goal, the package takes advantage of the features offered by sf [2] and provides a limited number of simple mapping functions. mapsf is the successor of cartography [3], it offers the same core features but it is simpler and more robust. Unlike other popular cartographic packages, it does not use grammar of graphics, it depends on a limited number of packages and displays georeferenced plots using base R graphics. The main function of the package, mf_map(), gives access to 9 map types: base maps, proportional or graduated symbols, choropleth maps, typology maps and various combinations of symbology. Many parameters are available to fine tune the cartographic representations. These parameters are the common ones found in GIS and automatic cartography tools (e.g. classification, color palettes, symbols sizes, legend layout...). Some additional functions are dedicated to layout design (graphic themes, legends, scale bar, north arrow, title, credits…), map insets or map exports. The development of mapsf follows the current best practices of the R ecosystem (CI/CD, coverage tests) and its documentation is enhanced by several vignettes (the classic form of detailed documentation for R packages) and a website.
Cosmic rays and non-thermal emission in simulated galaxies: III. probing cosmic ray calorimetry with radio spectra and the FIR-radio correlation
Creators: name: Werhahn, Maria
name: Pfrommer, Christoph
name: Girichidis, Philipp
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: An extinction-free estimator of the star-formation rate (SFR) of galaxies is critical for understanding the high-redshift universe. To this end, the nearly linear, tight correlation of far-infrared (FIR) and radio luminosity of star-forming galaxies is widely used. While the FIR is linked to massive star formation, which also generates shock-accelerated cosmic ray (CR) electrons and radio synchrotron emission, a detailed understanding of the underlying physics is still lacking. Hence, we perform three-dimensional magneto-hydrodynamical (MHD) simulations of isolated galaxies over a broad range of halo masses and SFRs using the moving-mesh code AREPO, and evolve the CR proton energy density self-consistently. In post-processing, we calculate the steady-state spectra of primary, shock-accelerated and secondary CR electrons, which result from hadronic CR proton interactions with the interstellar medium. The resulting total radio luminosities correlate with the FIR luminosities as observed and are dominated by primary CR electrons if we account for anisotropic CR diffusion. The increasing contribution of secondary emission up to 30 per cent in starbursts is compensated by the larger bremsstrahlung and Coulomb losses. CR electrons are in the calorimetric limit and lose most of their energy through inverse Compton interactions with star-light and cosmic microwave background (CMB) photons while less energy is converted to synchrotron emission. This implies steep steady-state synchrotron spectra in starbursts. Interestingly, we find that thermal free-free emission hardens the total radio spectra at high radio frequencies and reconciles calorimetric theory with observations while free-free absorption explains the observed low-frequency flattening towards the central regions of starbursts.
description: 24 pages, 15 figures, submitted to MNRAS, comments are welcome
On the Capacity Bounds of Undirected Networks
Creators: name: Al-Bashabsheh, Ali
name: Yongacoglu, Abbas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this work we improve on the bounds presented by Li&Li for network coding gain in the undirected case. A tightened bound for the undirected multicast problem with three terminals is derived. An interesting result shows that with fractional routing, routing throughput can achieve at least 75% of the coding throughput. A tighter bound for the general multicast problem with any number of terminals shows that coding gain is strictly less than 2. Our derived bound depends on the number of terminals in the multicast network and approaches 2 for arbitrarily large number of terminals.
description: 5 pages, 5 figures, ISIT 2007 conference
Secured Intrinsic Under-Pressure in the NICE Modules - The Oxygen Gettering Approach
Creators: name: Nichiporuk, O.
name: Dupuis, J.
name: Saint-Sernin, E.
name: Degoulange, J.
name: Lefillastre, P.
name: Einhaus, R.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3449-3451
description: APOLLON SOLAR’s NICE (New Industrial Solar Cell Encapsulation) module technology is an
innovative technology to encapsulate and electrically interconnect solar cells without neither soldering nor full area
EVA-type encapsulant. An organic edge sealing delimits the internal volume in which an under-pressure is created,
allowing to establish the electrical contact between solar cells and interconnectors by pressure. The under-pressure is
kept inside thanks to a Poly-IsoButhylen (PIB) material, used as organic sealing for more than 40 years in the
insulating glazing industry allowing us to expect more than a 30-years lifetime for the NICE modules. Being a new
technology, no long term performance information from the field is available from NICE modules working for
several decades. In order to be confident on the 30-years lifetime, the module is able to support a slight increase of
pressure without any problem of efficiency. Moreover, an additional security can be obtained by controlling the
variation of gas inside the module. In particular we will show how the oxygen can be partly removed by the module
elements themselves. After an introduction on the partial pressure concept, this paper will present a recent results on
oxygen segregation inside the module. It was found that the cells and the copper inside the module are able to capture
the incoming oxygen with a potential of 100 time the initial oxygen quantity present in the module. The NICE
module is then intrinsically protected from oxygen diffusion through the PIB sealing during its lifetime.
Testing the models of X-ray driven photoevaporation with accreting stars in the Orion Nebula Cluster
Creators: name: Flaischlen, Stefan
name: Preibisch, Thomas
name: Manara, Carlo Felice
name: Ercolano, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recent works highlight the importance of stellar X-rays on the evolution of the circumstellar disks of young stellar objects, especially for disk photoevaporation. A signature of this process may be seen in the so far tentatively observed dependence of stellar accretion rates on X-ray luminosities. According to models of X-ray driven photoevaporation, stars with higher X-ray luminosities should show lower accretion rates, on average, in a sample with similar masses and ages. To this aim, we have analyzed X-ray properties of young stars in the Orion Nebula Cluster determined with Chandra during the COUP observation as well as accretion data obtained from the photometric catalog of the HST Treasury Program. With these data, we have performed a statistical analysis of the relation between X-ray activity and accretion rates using partial linear regression analysis. The initial anticorrelation found with a sample of 332 young stars is considerably weaker compared to previous studies. However, excluding flaring activity or limiting the X-ray luminosity to the soft band (0.5 - 2.0 keV) leads to a stronger anticorrelation, which is statistically more significant. Furthermore, we have found a weak positive correlation between the higher component of the plasma temperature gained in the X-ray spectral fitting and the accretion rates, indicating that the hardness of the X-ray spectra may influence the accretion process. There is evidence for a weak anticorrelation, as predicted by theoretical models, suggesting that X-ray photoevaporation modulates the accretion rate through the inner disk at late stages of disk evolution, leading to a phase of photoevaporation-starved accretion.
description: Accepted for publication in Astronomy & Astrophysics
Radiative corrections to the three-body region of the Dalitz plot of baryon semileptonic decays with angular correlation between polarized emitted baryons and charged leptons
Creators: name: Neri, M.
name: Torres, J. J.
name: Flores-Mendieta, Ruben
name: Martinez, A.
name: Garcia, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have calculated the radiative corrections to the Dalitz plot of baryon semileptonic decays with angular correlation between polarized emitted baryons and charged leptons. This work covers both charged and neutral decaying baryons and is restricted to the so-called three-body region of the Dalitz plot. Also it is specialized at the center-of-mass frame of the emitted baryon. We have considered terms up to order (alpha/pi)(q/M_1)^0, where q is the momentum-transfer and M_1 is the mass of the decaying baryon, and neglected terms of order (alpha/pi)(q/M_1)^n$ for n >= 1. The expressions displayed are ready to obtain numerical results, suitable for model-independent experimental analyses.
description: 18 pages, 1 figure; some typos corrected; Eq. (24) complemented
EFT at FASER$ν$
Creators: name: Falkowski, Adam
name: González-Alonso, Martín
name: Kopp, Joachim
name: Soreq, Yotam
name: Tabrizi, Zahra
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate the sensitivity of the FASER$ν$ detector to new physics in the form of non-standard neutrino interactions. FASER$ν$, which has recently been installed 480 m downstream of the ATLAS interaction point, will for the first time study interactions of multi-TeV neutrinos from a controlled source. Our formalism -- which is applicable to any current and future neutrino experiment -- is based on the Standard Model Effective Theory~(SMEFT) and its counterpart, Weak Effective Field Theory~(WEFT), below the electroweak scale. Starting from the WEFT Lagrangian, we compute the coefficients that modify neutrino production in meson decays and detection via deep-inelastic scattering, and we express the new physics effects in terms of modified flavor transition probabilities. For some coupling structures, we find that FASER$ν$ will be able to constrain interactions that are two to three orders of magnitude weaker than Standard Model weak interactions, implying that the experiment will be indirectly probing new physics at the multi-TeV scale. In some cases, FASER$ν$ constraints will become comparable to existing limits - some of them derived for the first time in this paper - already with $150~$fb${}^{-1}$ of data.
description: 44 pages, 9 figures, 4 tables, 2 babies
EPHOCELL Project: Smart Light Collecting System for the Efficiency Enhancement of Solar Cells – Ray-Trace Modeling of Downshifting and Upconverting System
Creators: name: Aubouy, L.
name: Gutierrez-Tauste, D.
name: Della Pirriera, M.B.
name: Noriega, G.
name: Di Lorenzo, M.L.
name: Avella, M.
name: Errico, M.E.
name: Gentile, G.
name: Kennedy, M.
name: Doran, J.
name: Norton, B.
name: Ahmed, H.
name: Baluschev, S.
name: Bistué Guardiola, J.
name: Hervera, F.
name: Puigdollers González, J.
name: Voz Sánchez, C.
name: Daren, S.
name: Solomon-Tsvetkov, F.
name: Pashov, A.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
Fundamental Material Studies

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 500-502
description: PV cell efficiency is limited partly due to the spectral mismatch between the solar spectrum and the PV
absorption properties. PV conversion efficiency is enhanced by external modulation of the incident irradiance, by
means of photon downshifting (DS) and upconversion (UC). A ray-trace modelling tool is presented to simulate the
luminescent DS and UC processes and thereby optimise the doping concentrations and geometric dimensions of the
DS and UC layers.
What is a good textual representation of activity diagrams in requirements documents?
Creators: name: Beckmann, Martin
name: Vogelsang, Andreas
Publisher: name: Technische Universität Berlin
Year: 2017
Subjects: subject: 004 Datenverarbeitung; Informatik
subject: UML Activity Diagrams
subject: textual representation

description: The use of graphical models has become a widely adopted approach to specify requirements of complex systems. Still, in practice, graphical models are often accompanied by textual descriptions to provide more detail, because of legal considerations, and to enable stakeholders with different backgrounds to understand a requirements document. One of our industry partners (Daimler AG) uses activity diagrams to specify vehicle functions in combination with a textual representation thereof in their requirements documents. Since graphical and textual representations serve different purposes, it is not obvious how textual representations of activity diagrams should be structured. In this paper, we present different textual representations of activity diagrams for use in requirements documents. The representation currently in use is presented as well as four alternatives. For each representation, we discuss advantages and disadvantages. To evaluate the representations, we asked five stakeholders of one system to create a preference ranking of the representations. The resulting ranking showed that the currently used representation is not considered to be the best possible option. The stakeholders’ favorite textual representation emphasizes structural similarity with the activity diagram, which however does not resemble the diagram’s structure exactly.
Solar Resource and Photovoltaic Electricity Potential in EU-MENA Region
Creators: name: Betak, J.
name: Suri, M.
name: Cebecauer, T.
name: Skoczek, A.
Publisher: name: WIP
Year: 2012
Subjects: PV - a Major Electricity Source
Markets

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4623-4626
description: The study offers updated and more accurate information about long-term annual solar resource in the most countries
of Europe, Middle East and North Africa (EU-MENA) and evaluates PV power production potential. The underlying
solar radiation and PV electricity output values are calculated form the solar and meteo database SolarGIS, which
covers a history of recent 18 years. Direct Normal Irradiation data are presented to indicate potential of Concentrated
PV in the region. PV electricity output is calculated for c-Si module options, using the recent numerical models. The
analysis is focused on the urbanized and industrial areas and their hinterland. Attention is focused also to the
quantification of uncertainty. Based on the GIS analysis, the solar resource potential of each country is rated.
Obsessed With Work: A multi-causal and multi-rater approach to workaholism
Creators: name: Mazzetti, Greta <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: M-PSI/06 Psicologia del lavoro e delle organizzazioni

description: Workaholism is defined as the combination of two underlying dimensions: working excessively and working compulsively. The present thesis aims at achieving the following purposes: 1) to test whether the interaction between environmental and personal antecedents may enhance workaholism; 2) to develop a questionnaire aimed to assess overwork climate in the workplace; 3) to contrast focal employees’ and coworkers’ perceptions of employees’ workaholism and engagement. Concerning the first purpose, the interaction between overwork climate and person characteristics (achievement motivation, perfectionism, conscientiousness, self-efficacy) was explored on a sample of 333 Dutch employees. The results of moderated regression analyses showed that the interaction between overwork climate and person characteristics is related to workaholism. The second purpose was pursued with two interrelated studies. In Study 1 the Overwork Climate Scale (OWCS) was developed and tested using a principal component analysis (N = 395) and a confirmatory factor analysis (N = 396). Two overwork climate dimensions were distinguished, overwork endorsement and lacking overwork rewards. In Study 2 the total sample (N = 791) was used to explore the association of overwork climate with two types of working hard: work engagement and workaholism. Lacking overwork rewards was negatively associated with engagement, whereas overwork endorsement showed a positive association with workaholism. 
Concerning the third purpose, using a sample of 73 dyads composed by focal employees and their coworkers, a multitrait-multimethod matrix and a correlated trait-correlated method model, i.e. the CT-C(M–1) model, were examined. Our results showed a considerable agreement between raters on focal employees' engagement and workaholism. In contrast, we observed a significant difference concerning the cognitive dimension of workaholism, working compulsively. Moreover, we provided further evidence for the discriminant validity between engagement and workaholism. Overall, workaholism appears as a negative work-related state that could be better explained by assuming a multi-causal and multi-rater approach.
A Theory of Giant Vortices
Creators: name: Penin, Alexander A.
name: Weller, Quinten
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We elaborate a theory of giant vortices [1] based on an asymptotic expansion in inverse powers of their winding number $n$. The theory is applied to the analysis of vortex solutions in the abelian Higgs (Ginzburg-Landau) model. Specific properties of the giant vortices for charged and neutral scalar fields as well as different integrable limits of the scalar self-coupling are discussed. Asymptotic results and the finite-$n$ corrections to the vortex solutions are derived in analytic form and the convergence region of the expansion is determined.
description: 20 pages, 7 figures, LaTeX. arXiv admin note: text overlap with arXiv:2009.06640
ALAN HERBERT COWLEY - Bibliography from ALAN HERBERT COWLEY. 29 January 1934 — 2 August 2020
Creators: name: Jones, Richard A.
name: Kemp, Richard A.
name: Lasch, Jonathan G.
name: Lattman, Michael
name: Norman, Nicholas C.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Alan Cowley was one of the most creative main group chemists of his generation, and had a central role in what was often described as the renaissance of main group chemistry. Throughout his career Alan always had an eye for what was new. In his early years as an independent researcher, Alan made many fundamental contributions to the chemistry of phosphorus, not only in terms of the synthesis of new compounds but also in their study by employing novel analytical and computational methods. Starting in the 1980s he was at the forefront of emerging research into low-coordinate phosphorus chemistry and made seminal contributions in the areas of multiply bonded species, such as phosphenium ions and diphosphenes, as well as in the transition metal coordination chemistry of phosphinidenes. In the second half of his career, Alan also turned his attention to the study of single source precursors for important solid-state electronic materials, many of which were far superior to known examples. In all of the many areas in which Alan worked, he was a great collaborator with colleagues and researchers across the world, both in chemistry and in other disciplines. This was made all the easier by Alan's charm and easy-going nature, which was also manifest in the interactions he had with his many group members over a period of almost half a century. Alan was a gentleman in every sense and is much missed by friends, colleagues, collaborators and family.
Development of a Novel Technique for EVA-Curing by Means of UV-Radiation
Creators: name: Schulze, S.-H.
name: Apel, A.
name: Ehrich, C.
name: Dyrba, M.
name: Bobka, P.
name: Schak, M.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 349-352
description: Most solar modules are manufactured using vacuum lamination technique, where the laminate stack is heated up under vacuum and then pressed together. During this process, the encapsulate material, which is embedding the solar cells and electrical interconnectors, is melting, flowing around the single components and, in the case of Ethylene-Vinylacetate (EVA), cross linking. The transition from a thermoplastic material to a non-melt able elastomeric material is achieved by a cross linking agent, which is incorporated by the foil manufacturer. The states of the art are peroxide cross linking agents which are activated at individual temperatures during the lamination process and lead to a covalently cross linked polymer network. In this work, we present a technique for EVA-cross linking by means of UV radiation. Instead of peroxide crosslinking agents, photo initiators are incorporated into the material. At first we describe the basic process of photo initiated cross linking and to understand the chemical interactions. EVA materials are then characterized towards their temperaturedepended cross linking behaviour under defined UV radiation.
The aftermath of nova Cen 2013 (V1369 Cen)
Creators: name: Mason, Elena
name: Shore, Steven N.
name: Drake, Jeremy
name: Howell, Steve B.
name: Kuin, Paul
name: Magaudda, Enza
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Classical nova progenitors are cataclysmic variables and very old novae are observed to match high mass transfer rate and (relatively) long orbital period systems. However, the aftermath of a classical nova has never been studied in detail. Aims: To probe the aftermath of a classical nova explosion in cataclysmic variables and observe as the binary system relaxes to quiescence. Methods: We used multi-wavelength time resolved optical and near-infrared spectroscopy for a bright, well studied classical nova five years after outburst. We were able to disentangle the contribution of the ejecta at this late epoch using its previous characterization, separating the ejecta emission from that of the binary system. Results: We determined the binary orbital period (P=3.76 hr), the system separation and mass ratio (q>=0.17 for an assumed white dwarf mass of 1.2 solar masses). We find evidence of an irradiated secondary star and no unambiguous signature of an accretion disk, although we identify a second emission line source tied to the white dwarf with an impact point. The data are consistent with a bloated white dwarf envelope and the presence of unsettled gas within the white dwarf Roche lobe. Conclusions: At more than 5 years after eruption, it appears that this classical nova has not yet relaxed.
description: Accepted for publication in A&A. Main body of manuscript: 10 pages and 10 figures; 16 pages including appendix tables
Supplementary Material FigureS1-S8 and Table S1-S13 from Macroevolutionary pattern of Saussurea (Asteraceae) provides insights into the drivers of radiating diversification
Creators: name: Zhang, Xu
name: Landis, Jacob B.
name: Sun, Yanxia
name: Zhang, Huajie
name: Lin, Nan
name: Kuang, Tianhui
name: Huang, Xianhan
name: Deng, Tao
name: Wang, Hengchang
name: Sun, Hang
Publisher: name: The Royal Society
Year: 2021

description: Figure S1. Dated phylogeny of Saussurea. Figure S2. Dated phylogeny showing the diversification time of three clades of Saussurea. Figure S3. Posterior probability of each shift rate in the BAMM analysis. Figure S4. Rate-through-time plot from the TESS analysis. Figure S5. Speciation rates of four morphology-based subgenera of Saussurea estimated by DR statistic. Figure S6 Paleoenvironment-dependent diversification processes in Saussurea. Figure S7. Multistate trait dependent diversification of Saussurea estimated from MuSSE analysis. Figure S8. PCA results of eight bioclimatic variables representing climate lability of Saussurea species. Table S1. Summary of diversiﬁcation analyses Table S2. Sample information in the present study. Table S3. Traits coding regime in the present study. Table S4. HiSSE models used in the present study. Table S5. Speciation rates of Saussurea species estimated from BAMM and DR statistic. Table S6. Results of RPANDA analyses. Table S7. Results of the diversity-dependence diversification analyses for Saussurea. Table S8. Model comparison of HiSSE analysis for four binary traits of Saussurea. Table S9. Summary table of the mean rate values for four binary traits in HiSSE and FiSSE analysis. Table S10. Model comparison of MuSSE analysis for multistate traits of Saussurea. Table S11. Summary table of ecological factors for correlation with diversification rates of Saussurea species. Table S12. Model comparison of QuaSSE analysis for correlation between ecological factors and speciation rates of Saussurea. Table S13. Results of ES-sim tests for correlation between speciation rate and continuous ecological factors. Supplementary Data S1. GBIF-mediated data citations.
The GAPS Programme with HARPS-N at TNG. XXXI. The WASP-33 system revisited with HARPS-N
Creators: name: Borsa, F.
name: Lanza, A. F.
name: Raspantini, I.
name: Rainer, M.
name: Fossati, L.
name: Brogi, M.
name: Di Mauro, M. P.
name: Gratton, R.
name: Pino, L.
name: Benatti, S.
name: Bignamini, A.
name: Bonomo, A. S.
name: Claudi, R.
name: Esposito, M.
name: Frustagli, G.
name: Maggio, A.
name: Maldonado, J.
name: Mancini, L.
name: Micela, G.
name: Nascimbeni, V.
name: Poretti, E.
name: Scandariato, G.
name: Sicilia, D.
name: Sozzetti, A.
name: Boschin, W.
name: Cosentino, R.
name: Covino, E.
name: Desidera, S.
name: Di Fabrizio, L.
name: Fiorenzano, A. F. M.
name: Harutyunyan, A.
name: Knapic, C.
name: Molinari, E.
name: Pagano, I.
name: Pedani, M.
name: Piotto, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: [abridged] We analyse four transits of WASP-33b observed with the optical high-resolution HARPS-N spectrograph to confirm its nodal precession, study its atmosphere and investigate the presence of star-planet interactions.We extract the mean line profiles of the spectra by using the LSD method, and analyse the Doppler shadow and the RVs. We also derive the transmission spectrum of the planet, correcting it for the stellar contamination due to rotation, CLV and pulsations. We confirm the previously discovered nodal precession of WASP-33b, almost doubling the time coverage of the inclination and projected spin-orbit angle variation. We find that the projected obliquity reached a minimum in 2011 and use this constraint to derive the geometry of the system, in particular its obliquity at that epoch ($ε=113.99^{\circ}\pm 0.22^{\circ}$) and the inclination of the stellar spin axis ($i_{\rm s}=90.11^{\circ}\pm 0.12^{\circ}$), as well as the gravitational quadrupole moment of the star $J_2=(6.73\pm 0.22)\times 10^{-5}$. We present detections of H$α$ and H$β$ absorption in the atmosphere of the planet with a contrast almost twice smaller than previously detected in the literature. We also find evidence for the presence of a pre-transit signal, which repeats in all four analysed transits. The most likely explanation lies in a possible excitation of a stellar pulsation mode by the presence of the planetary companion. Future common analysis of all available datasets in the literature will help shedding light on the possibility that the observed Balmer lines transit depth variations are related to stellar activity and/or pulsation, and to set constraints on the energetics possibly driving atmospheric escape. A complete orbital phase coverage of WASP-33b with high-resolution spectroscopic (spectro-polarimetric) observations could help understanding the nature of the pre-transit signal.
description: Accepted for publication in A&A
Temperature of systems out of thermodynamic equilibrium
Creators: name: Garden, Jean-Luc
name: Richard, Jacques
name: Guillou, Hervé
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Two phenomenological approaches are currently used in the study of the vitreous state. One is based on the concept of fictive temperature introduced by Tool [Jour. Research Nat. Bur. Standards 34, 199 (1945)] and recently revisited by Nieuwenhuizen [Phys. Rev. Lett. 80, 5580 (1998)]. The other is based on the thermodynamics of irreversible processes initiated by De Donder at the beginning of the last century [L'Affinité (Gauthier-Villars, Paris, 1927)] and recently used by Möller and co-workers for a thorough study of the glass transition [J. Chem. Phys. 125, 094505 (2006)]. This latter approach leads to the possibility of describing the glass transition by means of the freezing-in of one or more order parameters connected to the internal structural degrees of freedom involved in the vitrification process. In this paper, the equivalence of the two preceding approaches is demonstrated, not only for glasses, but in a very general way for any system undergoing an irreversible transformation. This equivalence allows the definition of an effective temperature for all systems departed from equilibrium generating a positive amount of entropy. In fact, the initial fictive temperature concept of Tool leads to the generalization of the notion of temperature for systems out of thermodynamic equilibrium, for which glasses are just particular cases.
Evolution of Wolf-Rayet stars as black hole progenitors
Creators: name: Higgins, Erin R.
name: Sander, Andreas A. C.
name: Vink, Jorick S.
name: Hirschi, Raphael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Evolved Wolf-Rayet stars form a key aspect of massive star evolution, and their strong outflows determine their final fates. In this study, we calculate grids of stellar models for a wide range of initial masses at five metallicities (ranging from solar down to just 2% solar). We compare a recent hydrodynamically-consistent wind prescription with two earlier frequently-used wind recipes in stellar evolution and population synthesis modelling, and we present the ranges of maximum final masses at core He-exhaustion for each wind prescription and metallicity Z. Our model grids reveal qualitative differences in mass-loss behaviour of the wind prescriptions in terms of "convergence". Using the prescription from Nugis & Lamers the maximum stellar black hole is found to converge to a value of 20-30Msun, independent of host metallicity, however when utilising the new physically-motivated prescription from Sander & Vink there is no convergence to a maximum black hole mass value. The final mass is simply larger for larger initial He-star mass, which implies that the upper black hole limit for He-stars below the pair-instability gap is set by prior evolution with mass loss, or the pair instability itself. Quantitatively, we find the critical Z for pair-instability (Z_PI) to be as high as 50% Zsolar, corresponding to the host metallicity of the LMC. Moreover, while the Nugis & Lamers prescription would not predict any black holes above the approx 130Msun pair-instability limit, with Sander & Vink winds included, we demonstrate a potential channel for very massive helium stars to form such massive black holes at ~2% Zsolar or below.
description: Accepted for publication in MNRAS. 17 pages, 16 figures
Transient Hydrodynamic Lattice Cooling by Picosecond Laser Irradiation of Graphite
Creators: name: Jeong, Jihoon
name: Li, Xun
name: Lee, Sangyeop
name: Shi, Li
name: Wang, Yaguo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent theories and experiments have suggested hydrodynamic phonon transport features in graphite at unusually high temperatures. Here, we report a pico-second pump-probe thermal reflectance measurement of heat pulse propagation in graphite. The measurement results reveal transient lattice cooling near the adiabatic center of a 15 $μ$m diameter ring-shape pump beam at temperatures between 80 and 120 K. While such lattice cooling has not been reported in recent diffraction measurements of second sound in graphite, the observation here is consistent with both hydrodynamic phonon transport theory and prior heat pulse measurements of second sound in bulk sodium fluoride.
From Microscales to Macroscales in 3D: Selfconsistent Equation of State for Supernova and Neutron Star Models
Creators: name: Newton, W. G.
name: Stone, J. R.
name: Mezzacappa, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: First results from a fully self-consistent, temperature-dependent equation of state that spans the whole density range of neutron stars and supernova cores are presented. The equation of state (EoS) is calculated using a mean-field Hartree-Fock method in three dimensions (3D). The nuclear interaction is represented by the phenomenological Skyrme model in this work, but the EoS can be obtained in our framework for any suitable form of the nucleon-nucleon effective interaction. The scheme we employ naturally allows effects such as (i) neutron drip, which results in an external neutron gas, (ii) the variety of exotic nuclear shapes expected for extremely neutron heavy nuclei, and (iii) the subsequent dissolution of these nuclei into nuclear matter. In this way, the equation of state is calculated across phase transitions without recourse to interpolation techniques between density regimes described by different physical models. EoS tables are calculated in the wide range of densities, temperature and proton/neutron ratios on the ORNL NCCS XT3, using up to 2000 processors simultaneously.
description: 6 pages, 11 figures. Published in conference proceedings Journal of Physics: Conference Series 46 (2006) 408. Extended version to be submitted to Phys. Rev. C
Precision study of ground state capture in the 14N(p,gamma)15O reaction
Creators: name: Marta, M.
name: Formicola, A.
name: Gyurky, Gy.
name: Bemmerer, D.
name: Broggini, C.
name: Caciolli, A.
name: Corvisiero, P.
name: Costantini, H.
name: Elekes, Z.
name: Fulop, Zs.
name: Gervino, G.
name: Guglielmetti, A.
name: Gustavino, C.
name: Imbriani, G.
name: Junker, M.
name: Kunz, R.
name: Lemut, A.
name: Limata, B.
name: Mazzocchi, C.
name: Menegazzo, R.
name: Prati, P.
name: Roca, V.
name: Rolfs, C.
name: Romano, M.
name: Alvarez, C. Rossi
name: Somorjai, E.
name: Straniero, O.
name: Strieder, F.
name: Terrasi, F.
name: Trautvetter, H. P.
name: Vomiero, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The rate of the hydrogen-burning carbon-nitrogen-oxygen (CNO) cycle is controlled by the slowest process, 14N(p,gamma)15O, which proceeds by capture to the ground and several excited states in 15O. Previous extrapolations for the ground state contribution disagreed by a factor 2, corresponding to 15% uncertainty in the total astrophysical S-factor. At the Laboratory for Underground Nuclear Astrophysics (LUNA) 400 kV accelerator placed deep underground in the Gran Sasso facility in Italy, a new experiment on ground state capture has been carried out at 317.8, 334.4, and 353.3 keV center-of-mass energy. Systematic corrections have been reduced considerably with respect to previous studies by using a Clover detector and by adopting a relative analysis. The previous discrepancy has been resolved, and ground state capture no longer dominates the uncertainty of the total S-factor.
description: Phys. Rev. C, rapid comm., accepted
Additional file 1 of Utilization of the evidence from studies with no events in meta-analyses of adverse events: an empirical investigation
Creators: name: Xu, Chang
name: Zhou, Xiaoqin
name: Zorzela, Liliane
name: Ju, Ke
name: Furuya-Kanamori, Luis
name: Lin, Lifeng
name: Lu, Cuncun
name: Musa, Omran A. H.
name: Vohra, Sunita
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Science Policy

description: Additional file 1. Additional materials including the research protocol, search strategy, list of included studies, and additional figures for the main context.
A nonlinearly ill-posed problem of reconstructing the temperature from interior data
Creators: name: Dinh, Alain Pham Ngoc
name: Quan, Pham Hoang
name: Trong, Dang Duc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 47J06, 35J60, 42A38, 47H10

description: We consider the problem of reconstructing, from the interior data $u(x,1)$, a function $u$ satisfying a nonlinear elliptic equation $$ Δu = f(x,y,u(x,y)), x \in \RR, y > 0. $$
description: 24 pages