cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Genetic Algorithm to model Solar Radio Active Regions from 3D Magnetic Field Extrapolations
Creators: name: Silva, Alexandre José de Oliveira e
name: Selhorst, Caius L.
name: Costa, Joaquim E. R.
name: Simões, Paulo J. A.
name: de Castro, C. Guillermo Giménez
name: Wedemeyer, Sven
name: White, Stephen M.
name: Brajša, Roman
name: Valio, Adriana
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In recent decades our understanding of solar active regions (ARs) has improved substantially due to observations made with better angular resolution and wider spectral coverage. While prior AR observations have shown that these structures were always brighter than the quiet Sun at centimeter wavelengths, recent observations at millimeter and submillimeter wavelengths have shown ARs with well defined dark umbrae. Given this new information, it is now necessary to update our understanding and models of the solar atmosphere in active regions. In this work, we present a data-constrained model of the AR solar atmosphere, in which we use brightness temperature measurements of NOAA 12470 at three radio frequencies: 17 (NoRH), 100 and 230 GHz (ALMA). Based on our model, which assumes that the radio emission originates from thermal free-free and gyroresonance processes, we calculate radio brightness temperature maps that can be compared with the observations. The magnetic field at distinct atmospheric heights was determined in our modelling process by force-free field extrapolation using photospheric magnetograms taken by HMI/SDO. In order to determine the best plasma temperature and density height profiles necessary to match the observations, the model uses a genetic algorithm that modifies a standard quiet Sun atmospheric model. Our results show that the height of the transition region (TR) of the modelled atmosphere varies with the type of region being modelled: for umbrae the TR is located at 1080 +/- 20 km above the solar surface; for penumbrae, the TR is located at 1800 +/- 50 km; and for bright regions outside sunspots, the TR is located at 2000 +/- 100 km. With these results, we find good agreement with the observed AR brightness temperature maps. Our modelled AR can be used to estimate the emission at frequencies without observational coverage.
description: 20 pages, 8 figures, 4 tables, accepted for publication in Frontiers in Astronomy and Space Sciences
Los Angeles Times Poll # 1980-023: Primary Exit Election Day--New Hampshire
Creators: name: Los Angeles Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2008

description: 1980 Democratic presidential primary election (2); 1980 Republican presidential primary election (2); reasons for choosing candidate (1); issues influencing vote (1); Republican debate (1); reasons for candidate least liked (1); labor union (1); political views (2).
The R-Process Alliance: A Nearly Complete R-Process Abundance Template Derived from Ultraviolet Spectroscopy of the R-Process-Enhanced Metal-Poor Star HD 222925
Creators: name: Roederer, Ian U.
name: Lawler, James E.
name: Hartog, Elizabeth A. Den
name: Placco, Vinicius M.
name: Surman, Rebecca
name: Beers, Timothy C.
name: Ezzeddine, Rana
name: Frebel, Anna
name: Hansen, Terese T.
name: Hattori, Kohei
name: Holmbeck, Erika M.
name: Sakari, Charli M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a nearly complete rapid neutron-capture process (r-process) chemical inventory of the metal-poor ([Fe/H] = -1.46 +/- 0.10) r-process-enhanced ([Eu/Fe] = +1.32 +/- 0.08) halo star HD 222925. This abundance set is the most complete for any object beyond the solar system, totaling 63 metals detected and 7 with upper limits. It comprises 42 elements from 31 <= Z <= 90, including elements rarely detected in r-process-enhanced stars, such as Ga, Ge, As, Se, Cd, In, Sn, Sb, Te, W, Re, Os, Ir, Pt, and Au. We derive these abundances from an analysis of 404 absorption lines in ultraviolet spectra collected using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope and previously analyzed optical spectra. A series of appendices discusses the atomic data and quality of fits for these lines. The r-process elements from Ba to Pb, including all elements at the third r-process peak, exhibit remarkable agreement with the Solar r-process residuals, with a standard deviation of the differences of only 0.08 dex (17%). In contrast, deviations among the lighter elements from Ga to Te span nearly 1.4 dex, and they show distinct trends from Ga to Se, Nb through Cd, and In through Te. The r-process contribution to Ga, Ge, and As is small, and Se is the lightest element whose production is dominated by the r-process. The lanthanide fraction, log(X_La) = -1.39 +/- 0.09, is typical for r-process-enhanced stars and higher than that of the kilonova from the GW170817 neutron-star merger event. We advocate adopting this pattern as an alternative to the Solar r-process-element residuals when confronting future theoretical models of heavy-element nucleosynthesis with observations.
description: Accepted for publication in the Astrophysical Journal Supplement Series (40 pages, 10 figures; includes 43 appendices with detailed discussion of line detections and atomic data). Version 2 corrects a typo in the abstract
Pew Research Center Poll: Post-Election Re-Interview
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 2012

description: Vote in 1996 presidential election (1); direction of country (1); Bill Clinton vs. Bob Dole vs. Ross Perot (5); decision to vote (1); satisfaction with choice of presidential candidates (1); campaign information (1); presidential debates (1); rating of the presidential campaigns (10); candidate's commercials (1); discussion of issues (1); negative campaigning (1); news source for campaigns (5); influence of news organizations (1); press coverage of campaigns (3); 1996 congressional election (2); happy with election results (2); solving nation's problems (1); Democratic leaders (1); national problems (11); investigating ethical charges against Clinton administration (2); place of worship (1); urged to vote (1).
Recomendações para a prevenção da infecção por vírus sincicial respiratório (VSR)
Creators: name: Guimarães, Hercília
Publisher: name: Portuguese Journal of Pediatrics
Year: 2014

description: Em 2001, um grupo de trabalho constituído pela Secção de Neonatologia elaborou um documento sobre “As normas de prescrição do anticorpo monoclonal anti-vírus sincicial respiratório (VSR)”. Com base neste documento foi emitida pela Direcção Geral da Saúde (DGS) a Circular Informativa nº24/DSMIA de 9/10/01 com as indicações então preconizadas. Decorridos cinco anos, face à proposta recente da Secção de Cardiologia Pediátrica sobre a utilização de palivizumab nas cardiopatias congénitas cianóticas e à revisão das recomendações da Academia Americana de Pediatria 1, a actual direcção da Secção de Neonatologia tomou a iniciativa de propor à DGS uma revisão da referida circular. Foi assim feito em 21 de Setembro de 2006, um aditamento à Circular Informativa nº 24 /DSMIA alterando as normas de prescrição nas cardiopatias congénitas.
description: Portuguese Journal of Pediatrics, Vol 38 No 4 (2007)
“They Knock On Our Doors”: Social Representations And Policies On (Im)Migration, From Both Sides Of The Atlantic, Through Online Newspapers
Creators: name: Bocci, Elena
name: De Rosa, Annamaria Silvana
name: Negura, Lilian
name: Latini, Martina
name: Proietti, Sara
name: Taieb, Sarah
name: Masse, Yannick
Publisher: name: Psychology Hub
Year: 2023

description: Introduction. This study is part of the extension in Canada of a larger program on “Migration Studies” launched in Italy in 2017, inspired by the “modelling” paradigmatic approach to Social Representations Theory. After a short review of the literature, cross-results concerning the transversal analysis of the social media sources in the mother research are briefly presented, in order to contextualize the results presented here. Aims. In this paper we empirically investigate the structure and contents of Social Representations and Policies about (im)migration through the analysis of 2404 articles published online in Canadian and Italian news media (between 2014 and 2020). Hypothesis. Based on the background research results of the mother-research, we expect to find more polarised social representations in Italian articles and less polarized tones in the discussion of immigration in Canadian articles. Methodology. The texts of the articles have been analysed through Descending Hierarchical Classification, using the software IRaMuTeQ. Results. Among the six clusters extracted, four classes refer to the Italian sources and two classes refer to the Canadian ones. This highlights the consistency of the polarised discourse on (im)migration that already emerged from the wider research programme launched in Italy, thus confirming our above-mentioned hypothesis. Study’s limits and possible future developments. Our research is not without limitations. The limitations of the research open up new perspectives for expanding data collection in a spatio-temporal perspective. Impacts of the work. Moving from research to its application value, specific promotional online campaigns could be advocated for by experts in Psychology of Communication, to favour inclusive Policies free of stereotypes and prejudices, expressing positive social representations on (im)migration.
description: Psychology Hub, Vol. 40 No. 3 (2023)
Long Term Multi-band Near Infra-Red Variability of the Blazar OJ 287 during 2007--2021
Creators: name: Gupta, Alok C.
name: Kushwaha, Pankaj
name: Carrasco, L.
name: Xu, Haiguang
name: Wiita, Paul J.
name: Escobedo, G.
name: Porras, A.
name: Recillas, E.
name: Mayya, Y. D.
name: Chavushyan, V.
name: Villarroel, Beatriz
name: Zhang, Zhongli
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the most extensive and well-sampled long-term multi-band near-infrared (NIR) temporal and spectral variability study of OJ 287, considered to be the best candidate binary supermassive black hole blazar. These observations were made between December 2007 and November 2021. The source underwent ~ 2 -- 2.5 magnitude variations in the J, H, and Ks NIR bands. Over these long-term timescales there were no systematic trends in either flux or spectral evolution with time or with the source's flux states. However, on shorter timescales, there are significant variations in flux and spectra indicative of strong changes during different activity states. The NIR spectral energy distributions show diverse facets at each flux state, from the lowest to the highest. The spectra are, in general, consistent with a power-law spectral profile (within 10%) and many of them indicate minor changes (observationally insignificant) in the shift of the peak. The NIR spectra generally steepens during bright phases. We briefly discuss these behaviors in the context of blazar emission scenarios/mechanisms, OJ 287's well-known traditional behavior, and implications for models of the source central engine invoked for its long-term optical semi-periodic variations.
description: 17 pages, 6 figures, 5 tables. Accepted for publication in ApJS
Crescer para Cima. Como prevenir ou tratar a obesidade da criança e do adolescente + de 100 receitas cheias de saúde e imaginação.
Creators: name: Carvalho, Davide
Publisher: name: Portuguese Journal of Pediatrics
Year: 2014

description: O livro “Crescer para Cima” de Carla Rego e Maria Antónia Peças é um excelente instrumento na formação de pessoal saúde não médico, de professores e educadores e da população em geral. O livro, com 216 páginas, está dividido em duas partes: a primeira, com 118 páginas, em que se expõem de forma clara, sucinta e precisa, mas também muito bem ilustrada, os conceitos de obesidade e de estilo de vida saudável; na segunda, é apresentado um conjunto de receitas com imaginação que poderão ajudar neste combate para modificação do estilo de vida.
description: Portuguese Journal of Pediatrics, Vol 38 No 4 (2007)
AN ANALYTICAL COMPARISON OF PRE-DETERMINED DEMOGRAPHIC VARIABLES WITH THE ADMINISTRATIVE STYLES OF SELECTED SECONDARY SCHOOL PRINCIPALS IN NIGERIA
Creators: name: Ogunlade, Akinlolu Lucas
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 390403
subject: Educational administration, management and leadership

description: Source: Dissertation Abstracts International, Volume: 40-11, Section: A, page: 5678.
A Principled Approach towards Unapologetic Security
Creators: name: Bosamiya, Jay
Publisher: name: Carnegie Mellon University
Year: 2024
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences

description:  Software is incredibly difficult to write correctly, let alone safely. Prior work (quite successfully) has, amongst other things, relied on formal verification—a powerful hammer to achieve provable guarantees. However, improvements in the state-of-the-art of software security often come with significant apologies for other important objectives, such as development velocity, software performance, or loss of functionality. While many developers (and more so, users) would like their software to be secure, these apologies cause security to become underprioritized. To be adopted, advances in security thus need to not only improve the state-of-the-art in security, but also focus on other practical considerations that have historically inhibited widespread deployment, and indeed prevented building secure software from being the natural default choice.
 In this thesis, we argue that security objectives are achievable without apology, through the use of principled approaches and formalism. To validate this thesis, we look at a collection of case studies that span across a wide collection of different kinds of software systems: (i) high-performance cryptographic primitives, (ii) safe execution of arbitrary untrusted code, (iii) agile safety enforcement for code, (iv) low-level serializers and parsers for untrusted data, and (v) source-unavailable executable comprehension. In each, we demonstrate that principled approaches and formalism help remove the need for the apologies required by prior work. 
Our hope is that providing security without apology, even in the face of practical complexities, makes a big step towards the shared goal of security researchers—making security the natural default choice.
Gauge fixing and metric independence in topological quantum theories
Creators: name: Guadagnini, Enore
name: Rottoli, Federico
name: Thuillier, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider topological gauge theories in three dimensions which are defined by metric independent lagrangians. It has been claimed that the functional integration necessarily depends nontrivially on the gauge-fixing metric. We demonstrate that the partition function and the mean values of the gauge invariant observables do not really depend on the gauge-fixing metric.
description: 15 pages, 2 figures
www.eurordis.org
Creators: name: Virella, Daniel
Publisher: name: Portuguese Journal of Pediatrics
Year: 2014

description: As doenças raras (definidas na Europa como as que afectam menos de uma em cada 2000 pessoas) são uma área de particular interesse na Pediatria, pois a maioria inicia as suas manifestações na idade pediátrica. São entidades que exigem um grande esforço de informação e dedicação por parte dos profissionais mas, sobretudo, por parte dos doentes afectados e dos seus familiares. “A Eurordis é uma aliança não governamental centrada nos doentes, constituída por associações de doentes e por indivíduos com actividade no campo das doenças raras, que se dedica a melhorar a qualidade de vida de todas as pessoas que vivem com doenças raras na Europa”, diz-se na apresentação da organização na sua página electrónica.
description: Portuguese Journal of Pediatrics, Vol 38 No 4 (2007)
On the Determination of the Evolutionary Status of Supernova Remnants from Radio Observation Data
Creators: name: Urošević, Dejan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This paper aims to give a brief review of a new concept for the preliminary determination of the evolutionary status of supernova remnants (SNRs). Data obtained by radio observations in continuum are used. There are three different methods underlying the new concept: the first one based on the location of observationally obtained radio surface brightness and corresponding diameter of an SNR on the theoretically derived Sigma-D tracks; the second one based on the forms of radio spectra; and the third one, based on the magnetic field strengths that are estimated through the equipartition (eqp) calculation. Using a combination of these methods, developed over the last two decades by the Belgrade SNR Research Group, we can estimate the evolutionary status of SNRs. This concept helps radio observers to determine preliminarily the stage of the evolution of an SNR observed in radio domain. Additionally, this concept was applied for several SNRs, observed by the Australia Telescope Compact Array (ATCA), and the corresponding results are reviewed here. Moreover, some of the results are revised in this review to reflect the updated recently published Sigma-D and eqp analyses.
description: Topical Review accepted for publication in PASP
Pew Research Center Poll: September News Interest Index--Congressional Elections/Presidential Candidates/Iraq/Iran/International Relations/Terrorism
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 2007

description: George W. Bush job performance (2); most important problem facing the country (1); U.S. House of Representatives representative job performance (1); importance issue for President Bush to focus on (1); following of stories in the news (8); 2006 Congressional elections (18); voting habits (2); accomplishments of Congress (1); political division of country (1); concern about political party controlling Congress (2); frequency of conversing about news stories with family/friends (15); political party that would do better job (17); political party with better political leaders (2); Medicare (1); war on terrorism (1); civil liberties (2); Iran (4); economy (4); Iraq (9); vote in 2004 Presidential elections (2).
Short-time dynamics in active systems: the Vicsek model
Creators: name: Puzzo, M. Leticia Rubio
name: Loscar, Ernesto S.
name: De Virgiliis, Andres
name: Grigera, Tomas S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We study the short-time dynamics (STD) of the Vicsek model with vector noise. The study of STD has proved to be very useful in the determination of the critical point, critical exponents, and spinodal points in equilibrium phase transitions. Here we aim to test its applicability in active systems. We find that, despite the essential non-equilibrium characteristics of the VM (absence of detailed balance, activity), the STD presents qualitatively the same phenomenology as in equilibrium systems. From the STD one can distinguish whether the transition is continuous or discontinuous (which we have checked also computing the Binder cumulant). When the transition is continuous, one can determine the critical point and the critical exponents.
description: 12 pages, 5 figures
Thermo‐mechanical analysis of a steam turbine rotor
Creators: name: Eisenträger, Johanna
name: Naumenko, Konstantin
name: Kostenko, Yevgen
name: Altenbach, Holm
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: Power plant
subject: Energy production
subject: Heat-resistant steel
subject: Steam turbine rotor
subject: 621.8

description: In power plants, high temperatures prevail during long holding times. Furthermore, power plants are often started and shut-down in order to account for gaps or oversupplies in energy production. These loading conditions induce both creep and fatigue loads. Due to their excellent thermo-mechanical properties, such as high tensile strength and elevated corrosion resistance, heat-resistant steels are established materials for power plant components. Nevertheless, these steels tend to soften under deformation, which should be accounted for by a constitutive model. The contribution at hand analyses the thermo-mechanical behavior of a steam turbine rotor. For this purpose, a unified phase mixture model is introduced. This constitutive model accounts for rate-dependent inelasticity, hardening, as well as softening by employing an iso-strain approach with a soft and a hard constituent. While the soft constituent represents areas with a low dislocation density, such as the interior of subgrains, the hard constituent refers to regions with a high dislocation density, i.e. the subgrain boundaries. Furthermore, two internal variables are introduced: a backstress tensor of Armstrong-Frederick type and a scalar softening variable. The model results in a coupled system of three evolution equations with respect to the inelastic strain, the backstress, and the softening variable. To allow for the analysis of real power plant components, the model is implemented into the finite element method such that the evolution equations are integrated based on the backward EULER method. The applicability of the model is demonstrated by conducting a thermo-mechanical analysis of a steam turbine rotor with complex geometry under realistic boundary conditions. In a first step, the instationary temperature field in the rotor is computed in a heat transfer analysis. Thereby, typical steam temperatures in power plants and the corresponding heat transfer coefficients are prescribed. As a next step, the structural analysis is conducted based on the phase mixture model and the obtained temperature field as input. In addition, the time-dependent rotational frequency and steam pressure are taken into account. Note that the influence of different start-up procedures such as a cold or a hot start is examined in detail. As a result, the structural analysis provides the stress-strain hystereses, which constitute the basis for further fatigue and damage assessment.
The Geometric Theory of Phase Transitions
Creators: name: Di Cairano, Loris
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop a geometric theory of phase transitions (PTs) for Hamiltonian systems in the microcanonical ensemble. This theory allows to reformulate Bachmann's classification of PTs for finite-size systems in terms of geometric properties of the energy level sets (ELSs) associated to the Hamiltonian function. Specifically, by defining the microcanonical entropy as the logarithm of the ELS's volume equipped with a suitable metric tensor, we obtain an exact equivalence between thermodynamics and geometry. In fact, we show that any derivative of entropy with respect to the energy variable can be associated to a specific combination of geometric curvature structures of the ELSs which, in turn, are precise combinations of the potential function derivatives. In this way, we establish a direct connection between the microscopic description provided by the Hamiltonian and the collective behavior which emerges in a PT. Finally, we also analyze the behavior of the ELSs' geometry in the thermodynamic limit, showing that non-analyticities of the energy-derivatives of the entropy are caused by non-analyticities of certain geometric properties of the ELSs around the transition point. Finally, we validate the theory studying the PTs that occur in the $ϕ^4$ and Ginzburg-Landau-like models.
Cloudlet Capture Model for Asymmetric Molecular Emission Lines Observed in TMC-1A with ALMA
Creators: name: Hanawa, Tomoyuki
name: Sakai, Nami
name: Yamamoto, Satoshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: TMC-1A is a protostellar source harboring a young protostar, IRAS 04365+2353, and shows a highly asymmetric features of a few 100 au scale in the molecular emission lines. Blue-shifted emission is much stronger in the CS ($J=5$-4) line than red-shifted one. The asymmetry can be explained if the gas accretion is episodic and takes the form of cloudlet capture, given the cloudlet approached toward us. The gravity of the protostar transforms the cloudlet into a stream and changes its velocity along the flow. The emission from the cloudlet should be blue-shifted before the periastron, while it should be red-shifted after the periastron. If a major part of cloudlet has not reached the periastron, the former should be dominant. We perform hydrodynamical simulations to examine the validity of the scenario. Our numerical simulations can reproduce the observed asymmetry if the orbit of the cloudlet is inclined to the disk plane. The inclination can explain the slow infall velocity observed in the C$^{18}$O ($J$=2-1) line emission. Such episodic accretion may occur in various protostellar cores since actual clouds could have inhomogeneous density distribution. We also discuss the implication of the cloudlet capture on observations of related objects.
description: 17 pages, 13 figures, to appear in ApJ
X-ray Studies of the Inverted Ejecta Layers in the Southeast Area of Cassiopeia A
Creators: name: Tsuchioka, Tomoya
name: Sato, Toshiki
name: Yamada, Shinya
name: Uchiyama, Yasunobu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The central strong activities in core-collapse supernovae expect to produce the overturning of the Fe- and Si/O-rich ejecta during the supernova explosion based on multi-dimensional simulations. X-ray observations of the supernova remnant Cassiopeia A have indicated that the Fe-rich ejecta lies outside the Si-rich materials in the southeastern region, which is consistent with the hypothesis on the inversion of the ejecta. We investigate the kinematic and nucleosynthetic properties of the inverted ejecta layers in detail to understand its formation process using the data taken by the Chandra X-ray Observatory. Three-dimensional velocities of Fe- and Si/O-rich ejecta are obtained as $>$4,500 km s$^{-1}$ and $\sim$2,000--3,000 km s$^{-1}$, respectively, by combining proper motion and line-of-sight velocities, indicating that the velocity of the Si/O-rich ejecta is slower than that of the Fe-rich ejecta since the early stage of the explosion. To constrain their burning regime, the Cr/Fe mass ratios are evaluated as $0.51_{-0.10}^{+0.11}$% in the outermost Fe-rich region and $1.24 ^{+0.19}_{-0.20}$% in the inner Fe/Si-rich region, suggesting that the complete Si burning layer is invertedly located to the incomplete Si burning layer. All the results support the ejecta overturning at the early stages of the remnant's evolution or during the supernova explosion of Cassiopeia A.
description: ApJ accepted. 11 pages, 7 figures
Photoluminescence line shape analysis of highly n‐type doped zincblende GaN
Creators: name: Baron, Elias
name: Goldhahn, Rüdiger
name: Deppe, Michael
name: As, Donat J.
name: Feneberg, Martin
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: Photoluminescence
subject: Burstein–Moss shift
subject: Zincblende GaN
subject: 530

description: An investigation of different n-type doped zincblende gallium nitride thin films measured by photoluminescence from 7 K to room temperature is presented. The spectra change with increasing free-carrier concentration due to many-body effects such as the Burstein–Moss shift and band-gap renormalization. The samples are grown by molecular beam epitaxy on a 3C-SiC/Si (001) substrate, and a free-carrier concentration above 1020 cm 3 is achieved by introducing germanium as a donor. The analysis of the measured spectra by a line-shape fit yields different transition processes for different doping concentrations and temperatures, such as a band–band transition and a band–acceptor transition. The conduction band dispersion of Kane’s model is perfectly suited to explain the experimental data quantitatively.
Pew Research Center Poll: December 2010, Omnibus Week 1--News Stories/Economy
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 2011

description: Opinion of certain groups (3); opinion of certain people (7); following specific news stories (7); knowledge of release of classified documents on WikiLeaks (2); economic news (1); news about aspects of nations' economy (5); federal budget deficit commission (2); interest in news from certain countries (7).
In memoriam
Creators: name: Videira Amaral, João M
Publisher: name: Portuguese Journal of Pediatrics
Year: 2014

description: Recentemente deixou-nos para sempre a colega Maria Ofélia Guerreiro, facto que deixa uma grande lacuna na pediatria e na neonatologia do nosso país. A Ofélia, minha colega nos tempos da faculdade, fez toda a sua carreira na Clínica Universitária de Pediatria do Hospital de Santa Maria, em Lisboa. Durante o seu trajecto profissional de mais de 35 anos abraçou, desde o seu início, a Neonatologia, tendo contribuído decisivamente para os progressos do padrão assistencial da Unidade do seu Hospital de sempre.
description: Portuguese Journal of Pediatrics, Vol 38 No 5 (2007)
Overview table for: Emotional Intelligence Trainings for University Students: a Systematic Review of Models, Content, and Measures
Creators: name: Asiedu, Anastasia
name: Emslander, Valentin
name: Müller-Kreiner, Claudia
name: Seidel, Tina
name: Holzberger, Doris
Publisher: name: PsychArchives
Year: 2024
Subjects: subject: 150

description: This supplementary material contains a table with overview information of the included studies for: Asiedu, A., Emslander, V., Müller-Kreiner, C., Seidel, T., Holzberger, D. Emotional Intelligence Trainings for University Students: a Systematic Review of Models, Content, and Measures
Modeling Electron Acceleration and Transport in the Early Impulsive Phase of the 2017 September 10 Solar Flare
Creators: name: Li, Xiaocan
name: Guo, Fan
name: Chen, Bin
name: Shen, Chengcai
name: Glesener, Lindsay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The X8.2-class limb flare on September 10, 2017 is among the best studied solar flare events owing to its great similarity to the standard flare model and the broad coverage by multiple spacecraft and ground-based observations. These multiwavelength observations indicate that electron acceleration and transport are efficient in the reconnection and flare looptop regions. However, there lacks a comprehensive model for explaining and interpreting the multi-faceted observations. In this work, we model the electron acceleration and transport in the early impulsive phase of this flare. We solve the Parker transport equation that includes the primary acceleration mechanism during magnetic reconnection in the large-scale flare region modeled by MHD simulations. We find that electrons are accelerated up to several MeV and fill a large volume of the reconnection region, similar to the observations shown in microwaves. The electron spatial distribution and spectral shape in the looptop region agree well with those derived from the microwave and hard X-ray emissions before magnetic islands grow large and dominate the acceleration. Future emission modelings using the electron maps will enable direct comparison with microwave and hard X-ray observations. These results shed new light on the electron acceleration and transport in a broad region of solar flares within a data-constrained realistic flare geometry.
description: 19 pages, 8 figures, accepted to ApJ
The first hard X-ray spectral catalogue of Blazars observed by NuSTAR
Creators: name: Middei, Riccardo
name: Giommi, Paolo
name: Perri, Matteo
name: Turriziani, Sara
name: Sahakyan, Narek
name: Chang, Y. L.
name: Leto, C.
name: Verrecchia, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Blazars are a peculiar class of active galactic nuclei (AGNs) that enlighten the sky at all wavelengths. The electromagnetic emission of these sources is jet-dominated resulting in a spectral energy distribution (SED) that has a typical double-humped shape. X-ray photons provide a wealth of information on the physics of each source as in the X-ray band we can observe the tail of SED first peak, the rise of the second one or the transition between the two. NuSTAR, thanks to its capability of focusing X-rays up to 79 keV provides broadband data particularly suitable to compute SEDs in a still poorly explored part of the spectrum. In the context of the Open Universe initiative we developed a dedicated pipeline, NuSTAR_Spectra, a shell-script that automatically downloads data from the archive, generates scientific products and carries out a complete spectral analysis. The script homogeneously extracts high level scientific products for both NuSTAR's telescopes and the spectral characterisation is performed testing two phenomenological models. The corresponding X-ray properties are derived from the data best-fit and the SEDs are also computed. The systematic processing of all blazar observations of the NuSTAR public archive allowed us to release the first hard X-ray spectroscopic catalogue of blazars (NuBlazar). The catalogue, updated to September 30th, 2021, includes 253 observations of 126 distinct blazars, 30 of which have been multiply observed.
description: Manuscript accepted for publication in MNRAS. 29 pages, 19 figures and 3 tables
Ionization and Star Formation in the Giant HII Region SMC-N66
Creators: name: Geist, E.
name: Gallagher, J. S.
name: Kotulla, R.
name: Oskinova, L.
name: Hamann, W. -R.
name: Ramachandran, V.
name: Sabbi, E.
name: Smith, L.
name: Kniazev, A.
name: Nota, A.
name: Rickard, M. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The NGC 346 young stellar system and associated N66 giant HII region in the Small Magellanic Cloud are the nearest example of a massive star forming event in a low metallicity ($Z\approx0.2Z_{\odot}$) galaxy. With an age of $\lesssim$3Myr this system provides a unique opportunity to study relationships between massive stars and their associated HII region. Using archival data, we derive a total H$α$ luminosity of L(H$α$)=4.1$\times$10$^{38}$ergs$^{-1}$ corresponding to an H-photoionization rate of 3$\times$10$^{50}$s$^{-1}$. A comparison with a predicted stellar ionization rate derived from the more than 50 known O-stars in NGC 346, including massive stars recently classified from HST FUV spectra, indicates an approximate ionization balance. Spectra obtained with SALT suggest the ionization structure of N66 could be consistent with some leakage of ionizing photons. Due to the low metallicity, the far ultraviolet luminosity from NGC 346 is not confined to the interstellar cloud associated with N66. Ionization extends through much of the spatial extent of the N66 cloud complex, and most of the cloud mass is not ionized. The stellar mass estimated from nebular L(H$α$) appears to be lower than masses derived from the census of resolved stars which may indicate a disconnect between the formation of high and low mass stars in this region. We briefly discuss implications of the properties of N66 for studies of star formation and stellar feedback in low metallicity environments.
description: 15 pages, 6 figures, Accepted to be published in PASP
Re-evaluation of the isoscalar mixing angle within selected mesonic nonets
Creators: name: Feng, Xue-Chao
name: Wei, Ke-Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Based on the relations from the meson-meson mass mixing matrix, the mixing angles of isoscalar state have been re-evaluated via mass relations and latest experimental results. The results in the present work are compared with the values from different theoretical models, meanwhile, the quarkonia content of isoscalar state are presented. In order to check the validity of analysis, some predictions on the decays of the isoscalar state are presented. These predictions may be useful for the phenomenological analysis for meson nonet in future experiments.
description: 8 pages
Magnetic fields and outflows in the large Bok globule CB 54
Creators: name: Pattle, Kate
name: Lai, Shih-Ping
name: Sadavoy, Sarah
name: Coudé, Simon
name: Wolf, Sebastian
name: Furuya, Ray
name: Kwon, Woojin
name: Lee, Chang Won
name: Zielinski, Niko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have observed the large Bok globule CB 54 in 850$μ$m polarised light using the POL-2 polarimeter on the James Clerk Maxwell Telescope (JCMT). We find that the magnetic field in the periphery of the globule shows significant, ordered deviation from the mean field direction in the globule centre. This deviation appears to correspond with the extended but relatively weak $^{12}$CO outflow emanating from the Class 0 sources at the centre of the globule. Energetics analysis suggests that if the outflow is reshaping the magnetic field in the globule's periphery, then we can place an upper limit of $<27\,μ$G on the magnetic field strength in the globule's periphery. Comparison with archival Planck and CARMA measurements shows that the field in the centre of the globule is consistent over several orders of magnitude in size scale, and oriented parallel to the density structure in the region in projection. We thus hypothesise that while non-thermal motions in the region may be sub-Alfvénic, the magnetic field is subdominant to gravity over a wide range of size scales. Our results suggest that even a relatively weak outflow may be able to significantly reshape magnetic fields in star-forming regions on scales $> 0.1$ pc.
description: 11 pages, 10 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS)
PSRA/Newsweek Poll # 2000-18: Pre-Convention Poll
Creators: name: Newsweek
Publisher: name: Roper Center for Public Opinion Research
Year: 2000

description: 2000 presidential election (4); vote in 2000 presidential election (2); next president continue Clinton's policies v.s. change directions (1); Al Gore (5); George W. Bush (5); Gore v.s. Bush (12); Dick Cheney as Bush's choice as vice president (1); Cheney (12).
The Photometric Study of Six W UMa Systems and Investigation of the Mass-Radius Relations for Contact Binary Stars
Creators: name: Poro, Atila
name: Paki, Ehsan
name: Blackford, Mark G.
name: Davoudi, Fatemeh
name: Aladag, Yasemin
name: Zamanpour, Shiva
name: Sarabi, Soroush
name: Halavati, Afshin
name: Aksaker, Nazim
name: Bagis, Halil
name: Rahimi, Jabar
name: Guilani, Hamidreza
name: Akyuz, Aysun
name: Jahediparizi, Faezeh
name: Doner, Ozge
name: Ashrafzadeh, Zohreh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the photometric analysis of six short-period systems (EI Oct, V336 TrA, NX Boo, V356 Boo, PS Boo, and V2282 Cyg). This is the first photometric analysis of these systems except for V336 TrA. Observations were conducted for 27 nights at three observatories in the northern and southern hemispheres. We calculated a new ephemeris for each of the systems using our minimum times and additional literature. The Markov Chain Monte Carlo (MCMC) approach was used to determine the eclipse timing variation trends of the systems. We found a likely orbital growth for V336 TrA and PS Boo; four other systems show a linear trend in orbital period changes, which is most likely due to the accumulation of measurement errors in their linear ephemeris parameters. The light curve analysis was performed using the Physics of Eclipsing Binaries (PHOEBE) 2.3.59 version code with the MCMC approach. The absolute parameters of the systems were calculated by using the Gaia Early Data Release 3 (EDR3) parallax. The positions of the systems were also depicted on the Hertzsprung-Russell (H-R) and $logJ_0-logM$ diagrams. According to a sample, we were able to present relations for the mass-radius (M-R) relationships of contact binary systems. There is also a strong relationship between the mass ratio and the radius ratio in the W UMa systems for which we also provided a new relation. We compared the M-R updated relationships in this study with seven systems in other studies obtained using the spectroscopic method. In addition, we estimated some of the absolute parameters for 1734 EW systems, based on the new relationships.
description: 11 Figures, 9 Tables, Accepted by the PASP Journal
Libythea Fabricius 1807
Creators: name: Bland, Keith P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Libythea

description: Libythea MYRRHA Godart, in Latreille & Godart, 1819
Encyclopédie Méthodique Histoire Naturelle [Zoologie] 9. Entomologie i–328 [171]. Combination still valid (see D’Abrera, 1985).
Syntypes, two males, pinned (one (No.56) with abdomen and left antenna missing and other (no.57) with right antenna missing and pinned underside uppermost): Specimen data: Specimen reg. no. 56: “Lib. myrrha | java.” [Handwritten (by Godart) on coarse bluish paper]. “Dufresne” [Printed] on verso “L. | mirrha [sic] | 2” [Handwritten]. “ TYPE ” [Handwritten on oval pink label]. “Dufresne | 1936-50 | 56” on verso “ Libythea myrrha | Godart | TYPE ” [Handwritten (by Grimshaw) on mauve paper]. Specimen reg. no. 57; No handwritten Godart label but other labels as for No.56 above only with registration no.57. Remarks: These two specimens are undoubtedly part of the type series (Grimshaw 1897). Type locality is given as “l’île de Java” [Island of Java] and reiterated on Godart’s identification label.
Libythea TERENA Godart, in Latreille & Godart, 1819
Encyclopédie Méthodique Histoire Naturelle [Zoologie] 9. Entomologie i–328 [170]. Current accepted combination: Libytheana terena (Godart, in Latreille & Godart, 1819) (see Lamas, 2004).
Syntype, male, pinned (abdomen missing): Specimen data: “Lybithea terena” [Handwritten Dufresne cabinet label]. No Dufresne collection label. “ TYPE ” [Handwritten on oval pink label]. “Dufresne | 1936-50 | 58” on verso “ Libythea terena | Godart | TYPE ” [Handwritten (by Grimshaw) on mauve paper]. Remarks: The handwritten cabinet label on the pin of this specimen is in the same handwriting as the Dufresne collection catalogue, thus confirming Grimshaw’s supposition that it was of Dufresne origin (Grimshaw (1897). It is thus a syntype. Type locality is given as “Antilles” [The Antilles].
description: Published as part of Bland, Keith P., 2019, Name-bearing types of butterflies (Lepidoptera, Papilionoidea), in the National Museums of Scotland, Edinburgh, pp. 57-89 in Zootaxa 4559 (1) on page 76, DOI: 10.11646/zootaxa.4559.1.2, http://zenodo.org/record/3522349
Nuclear-Electronic Orbital Approach to Quantization of Protons in Periodic Electronic Structure Calculations
Creators: name: Xu, Jianhang
name: Zhou, Ruiyi
name: Tao, Zhen
name: Malbon, Christopher
name: Blum, Volker
name: Hammes-Schiffer, Sharon
name: Kanai, Yosuke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The nuclear-electronic orbital (NEO) method is a well-established approach for treating nuclei quantum mechanically in molecular systems beyond the usual Born-Oppenheimer approximation. In this work, we present a strategy to implement the NEO method for periodic electronic structure calculations, particularly focused on multicomponent density functional theory (DFT). The NEO-DFT method is implemented in an all-electron electronic structure code, FHI-aims, using a combination of analytical and numerical integration techniques as well as a resolution of the identity scheme to enhance computational efficiency. After validating this implementation, proof-of-concept applications are presented to illustrate the effects of quantized protons on the physical properties of extended systems such as two-dimensional materials and liquid-semiconductor interfaces. Specifically, periodic NEO-DFT calculations are performed for a trans-polyacetylene chain, a hydrogen boride sheet, and a titanium oxide-water interface. The zero-point energy effects of the protons, as well as electron-proton correlation, are shown to noticeably impact the density of states and band structures for these systems. These developments provide a foundation for the application of multicomponent DFT to a wide range of other extended condensed matter systems.
description: 8 figures