cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Opinion polarization of immigration and EU attitudes between social classes – the limiting role of working class dissensus
Creators: name: Dochow-Sondershaus, Stephan
name: Teney, Celine
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Opinion polarization
subject: globalization cleavage
subject: attitudes toward immigrants
subject: opinion trends
subject: measuring polarization
subject: class polarization
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: This study examines polarization in political opinions toward immigration and the European Union between occupational classes, i.e. structural polarization. We maintain that two conditions must hold to indicate structural opinion polarization: high between-class divergence and high within-class consensus. Our main contribution is to study these two conditions systematically for a wide variety of immigration and EU-related topics. Using data from four high-quality German surveys spanning three decades, we document three main findings. First, we find substantial between-class divergence: respondents in typical working class occupations express substantially more unfavorable opinions about immigration and the EU than the upper classes across the majority of survey indicators. Second, however, we also observe considerable opinion heterogeneity within the working class. This lack of within-class consensus limits the potential of mobilizing the working class as a group on the basis of anti-immigration and anti-EU sentiments. Third, while we do not document durable increases in structural opinion polarization over time across most of our opinion indicators, we do draw attention to those individual indicators that show relatively high polarization. Overall, our results suggest limited opinion polarization between occupational classes on immigration and EU issues in Germany.
The Basics of Quantum Computing for Chemists
Creators: name: Claudino, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The rapid and successful strides in quantum chemistry in the past decades can be largely credited to a conspicuous synergy between theoretical and computational advancements. However, the architectural computer archetype that enabled such a progress is approaching a state of more stagnant development. One of the most promising technological avenues for the continuing progress of quantum chemistry is the emerging quantum computing paradigm. This revolutionary proposal comes with several challenges, which span a wide array of disciplines. In chemistry, it implies, among other things, a need to reformulate some of its long established cornerstones in order to adjust to the operational demands and constraints of quantum computers. Due to its relatively recent emergence, much of quantum computing may still seem fairly nebulous and largely unknown to most chemists. It is in this context that here we review and illustrate the basic aspects of quantum information and their relation to quantum computing insofar as enabling simulations of quantum chemistry. We consider some of the most relevant developments in light of these aspects and discuss the current landscape when of relevance to quantum chemical simulations in quantum computers.
description: Added email address in v2
Oxidation-Mediated Fingering in Liquid Metals
Creators: name: Eaker, Collin B.
name: Hight, David C.
name: O'Regan, John D.
name: Dickey, Michael D.
name: Daniels, Karen E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We identify and characterize a new class of fingering instabilities in liquid metals; these instabilities are unexpected due to the large interfacial tension of metals. Electrochemical oxidation lowers the effective interfacial tension of a gallium-based liquid metal alloy to values approaching zero, thereby inducing drastic shape changes, including the formation of fractals. The measured fractal dimension ($D = 1.3 \pm 0.05$) places the instability in a different universality class than other fingering instabilities. By characterizing changes in morphology and dynamics as a function of droplet volume and applied electric potential, we identify the three main forces involved in this process: interfacial tension, gravity, and oxidative stress. Importantly, we find that electrochemical oxidation can generate compressive interfacial forces that oppose the tensile forces at a liquid interface. Thus, the surface oxide layer not only induces instabilities, but ultimately provides a physical barrier that halts the instabilities at larger positive potentials. Controlling the competition between surface tension and oxidative (compressive) stresses at the interface is important for the development of reconfigurable electronic, electromagnetic, and optical devices that take advantage of the metallic properties of liquid metals.
Teaching quality in kindergarten: professional development and quality of adaptive learning support enhances mathematical competency
Creators: name: Dunekacke, Simone
name: Wullschleger, Andrea
name: Grob, Urs
name: Heinze, Aiso
name: Lindmeier, Anke
name: Vogt, Franziska
name: Kuratli Geeler, Susanne
name: Leuchter, Miriam
name: Meier-Wyder, Anuschka
name: Seemann, Selma
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Teaching quality in kindergarten
subject: Macro-adaptive learning support
subject: Micro-adaptive learning support
subject: Professional development
subject: Mathematical competency
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: Adaptive learning support provided by kindergarten teachers before and after (macro-adaptive learning support) as well as during mathematical learning activities (micro-adaptive learning support) is a cross-cutting concept of teaching quality. Effective adaptive learning support enhances children’s learning. However, providing it is challenging and teachers need professional development (PD) to improve the quality of their support. This study investigates the mediating role of teaching quality between PD programs for kindergarten teachers and the development of children’s mathematical competency. 122 kindergarten teachers and their 825 pupils participated in the study. The teachers were randomly assigned to three groups. Two groups attended PD sessions designed to foster either macro- or micro-adaptive learning support. The third was the materials-only control group. The data was analyzed using a self-developed rating instrument focusing on generic and domain-specific elements of teaching quality related to macro- and micro-adaptive learning support. The multilevel latent change model analysis revealed that the PD programs had positive and significant effects on the teaching quality of kindergarten teachers. A significant positive relationship was also found between micro-adaptive learning support and changes in children’s mathematical competency. However, an indirect effect of teaching quality could not be detected, and the PD programs did not have a total effect on children’s mathematical competency. The study reinforces the importance of PD that specifically targets macro- and micro-adaptive learning support for kindergarten teachers. The mediation between PD and mathematical competency development requires further investigation.
United we stand, divided we fall. Union organization and political activism among Jewish woodworkers in early-twentieth-century Buenos Aires
Creators: name: Koppmann, Walter L.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Jewish immigration
subject: working class
subject: furniture industry
subject: social conflicts
subject: labour relationships
subject: Buenos Aires
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: This article focuses on the formation of the working class in Argentina, specifically within the Jewish East-European sector of the furniture industry during the early twentieth century. It examines Jewish immigration, their integration into the timber sector of Buenos Aires, and diverse labour relationships. Through an analysis of social and labour conflicts, the paper aims to study how Yiddish-speaking workers integrated into a highly cosmopolitan working class, put, at the same time, into a broader perspective of Jewish immigration into the Global South. By doing so, we hope to enhance our understanding of the significant role played by Jewish workers in the trajectory of the Argentine working class.
Transitional boundary layers in low-Prandtl-number convection
Creators: name: Schumacher, Jörg
name: Bandaru, Vinodh
name: Pandey, Ambrish
name: Scheel, Janet D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The boundary layer structure of the velocity and temperature fields in turbulent Rayleigh-Benard flows in closed cylindrical cells of unit aspect ratio is revisited from a transitional and turbulent viscous boundary layer perspective. When the Rayleigh number is large enough, the dynamics at the bottom and top plates can be separated into an impact region of downwelling plumes, an ejection region of upwelling plumes and an interior region away from the side walls. The latter is dominated by the shear of the large-scale circulation (LSC) roll which fills the whole cell and continuously varies its orientation. The working fluid is liquid mercury or gallium at a Prandtl number Pr=0.021 for Rayleigh numbers between Ra=3e+5 and 4e+8. The generated turbulent momentum transfer corresponds to macroscopic flow Reynolds numbers with values between 1800 and 46000. It is shown that the viscous boundary layers for the largest Rayleigh numbers are highly transitional and obey properties that are directly comparable to transitional channel flows at friction Reynolds numbers Re_tau slightly below 100. The transitional character of the viscous boundary layer is also underlined by the strong enhancement of the fluctuations of the wall stress components with increasing Rayleigh number. An extrapolation of our analysis data suggests that the friction Reynolds number Re_tau in the velocity boundary layer can reach values of 200 for Ra beyond 1e+11. Thus the viscous boundary layer in a liquid metal flow would become turbulent at a much lower Rayleigh number than for turbulent convection in gases and gas mixtures.
description: 16 pages, 15 figures in reduced quality, accepted for Phys. Rev. Fluids
Direct Detection of Light Dark Matter and Solar Neutrinos via Color Center Production in Crystals
Creators: name: Budnik, Ranny
name: Chesnovsky, Ori
name: Slone, Oren
name: Volansky, Tomer
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new low-threshold direct-detection concept for dark matter and for coherent nuclear scattering of solar neutrinos, based on the dissociation of atoms and subsequent creation of color center type defects within a lattice. The novelty in our approach lies in its ability to detect single defects in a macroscopic bulk of material. This class of experiments features ultra-low energy thresholds which allows for the probing of dark matter as light as $\mathcal{O}(10)$ MeV through nuclear scattering. Another feature of defect creation in crystals is directional information, which presents as a spectacular signal and a handle on background reduction in the form of daily modulation of the interaction rate. We discuss the envisioned setup and detection technique, as well as background reduction. We further calculate the expected rates for dark matter and solar neutrinos in two example crystals for which available data exists, demonstrating the prospective sensitivity of such experiments.
Militarism and Militarization in Latin America: Introduction to the Special Issue
Creators: name: Hochmüller, Markus
name: Solar, Carlos
name: Perez Ricart, Carlos A.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: comparative politics
subject: democratization
subject: security studies
subject: sociology
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: This Special Issue explores Latin America’s recent wave of militarism across countries, the militarization of the rule of law, and its consequences on everyday life. It draws on the region’s recent history of giving militarized responses to seemingly intractable social, political, and economical problems. We argue that the presence of military values, beliefs, and mentalities have permeated processes in which nations absorb and aspire to military practices, modes of organization, and martial discourses that require greater scholarly attention. The articles address a series of issues including various forms of militarism and the militarization of family, culture and education, diplomacy, policing, and public security in urban and rural settings. The contributions engage systematically with the roots of militarism and give evidence of militarization at the individual, national, and international levels, including a variety of case studies from across the Western Hemisphere.
Self-supervised component separation for the extragalactic submillimeter sky
Creators: name: Bonjean, V.
name: Tanimura, H.
name: Aghanim, N.
name: Bonnaire, T.
name: Douspis, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We use a new approach based on self-supervised deep learning networks originally applied to transparency separation in order to simultaneously extract the components of the extragalactic submillimeter sky, namely the cosmic microwave background (CMB), the cosmic infrared background (CIB), and the Sunyaev-Zel'dovich (SZ) effect. In this proof-of-concept paper, we test our approach on the WebSky extragalactic simulation maps in a range of frequencies from 93 to 545 GHz, and compare with one of the state-of-the-art traditional methods, MILCA, for the case of SZ. We first visually compare the images, and then statistically analyse the full-sky reconstructed high-resolution maps with power spectra. We study the contamination from other components with cross spectra, and particularly emphasise the correlation between the CIB and the SZ effect and compute SZ fluxes around positions of galaxy clusters. The independent networks learn how to reconstruct the different components with less contamination than MILCA. Although this is tested here in an ideal case (without noise, beams, or foregrounds), this method shows significant potential for application in future experiments such as the Simons Observatory (SO) in combination with the Planck satellite.
description: 11 pages, 7 figures
Ultrasensitive micro-scale parity-time-symmetric ring laser gyroscope
Creators: name: Ren, Jinhan
name: Hodaei, Hossein
name: Harari, Gal
name: Hassan, Absar U.
name: Chow, Weng
name: Soltani, Mohammad
name: Christodoulides, Demetrios N.
name: Khajavikhan, Mercedeh
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a new scheme for ultra-sensitive laser gyroscopes that utilizes the physics of exceptional points. By exploiting the properties of such non-Hermitian degeneracies, we show that the rotation-induced frequency splitting becomes proportional to the square root of the gyration speed- thus enhancing the sensitivity to low angular rotations by orders of magnitudes. In addition, at its maximum sensitivity limit, the measurable spectral splitting is independent of the radius of the rings involved. Our work paves the way towards a new class of ultra-sensitive miniature ring laser gyroscopes on chip.
description: 5 pages
A Strategic Eurocentrism: The Construction of Ottoman Evolutionism in an Uneven World (1870–1900)
Creators: name: Kolland, Daniel
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Ottoman evolutionism
subject: Hamidian period
subject: Islam
subject: evolutionary theories
subject: 900 Geschichte und Geografie::950 Geschichte Asiens::956 Geschichte des Nahen Ostens (Mittleren Ostens)

description: Istanbul's intellectual life saw an evolutionist paradigm shift during the Hamidian period (1876–1908). Two generations of intellectuals used their privileged education and the burgeoning printing press to popularize evolutionism to advance global and local claims. On the one hand, selective readings of evolutionism allowed them to claim Ottoman adherence to a superior Caucasian race and to claim belonging to the circle of “civilized nations.” On the other hand, by hailing themselves champions of a new positivist age, oppositional evolutionists sought to challenge the Hamidian establishment and the kind of Islam it represented. Because examinations of Ottoman evolutionism in the Hamidian period reveal the interconnections between new globalized ways of ordering the world, the rise of new Ottoman elites, and conflicting strategies to guarantee imperial survival in the asymmetrical age of empire, they allow transcending narratives centered on the (ir)reconcilability of Islam and evolutionary theories.
Electron-phonon coupling and pairing mechanism in $β$--Bi$_2$Pd centrosymmetric superconductor
Creators: name: Zheng, Jing-Jing
name: Margine, E. R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report first-principles calculations of the superconducting properties of $β$--Bi$_2$Pd within the fully anisotropic Migdal-Eliashberg formalism. We find a single anisotropic superconducting gap of $s$--wave symmetry which varies in magnitude on the different regions of the Fermi surface. The calculated superconducting energy gap on the Fermi surface, the superconducting transition temperature, the specific heat, and the quasi-particle density of states are in good agreement with the corresponding experimental results and support the view that $β$--Bi$_2$Pd is a phonon-mediated single anisotropic gap superconductor.
description: 7 pages, 6 figures
Broad absorption line disappearance and emergence using multiple-epoch spectroscopy from the Sloan Digital Sky Survey
Creators: name: McGraw, S. M.
name: Brandt, W. N.
name: Grier, C. J.
name: Ak, N. Filiz
name: Hall, P. B.
name: Schneider, D. P.
name: Anderson, S. F.
name: Green, P. J.
name: Hutchinson, T. A.
name: Macleod, C. L.
name: Vivek, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate broad absorption line (BAL) disappearance and emergence using a 470 BAL-quasar sample over < 0.10-5.25 rest-frame years with at least three spectroscopic epochs for each quasar from the Sloan Digital Sky Survey. We identify 14 disappearing BALs over < 1.73-4.62 rest-frame years and 18 emerging BALs over < 1.46-3.66 rest-frame years associated with the CIV 1548,1550 and/or SiIV 1393,1402 doublets, and report on their variability behavior. BAL quasars in our dataset exhibit disappearing/emerging CIV BALs at a rate of 2.3 and 3.0 per cent, respectively, and the frequency for BAL to non-BAL quasar transitions is 1.7 per cent. We detect four re-emerging BALs over < 3.88 rest-frame years on average and three re-disappearing BALs over < 4.15 rest-frame years on average, the first reported cases of these types. We infer BAL lifetimes along the line of sight to be nominally < 100-1000 yr using disappearing CIV BALs in our sample. Interpretations of (re-)emerging and (re-)disappearing BALs reveal evidence that collectively supports both transverse-motion and ionization-change scenarios to explain BAL variations. We constrain a nominal CIV/SiIV BAL outflow location of < 100 pc from the central source and a radial size of > 1x10^-7 pc (0.02 au) using the ionization-change scenario, and constrain a nominal outflow location of < 0.5 pc and a transverse size of ~0.01 pc using the transverse-motion scenario. Our findings are consistent with previous work, and provide evidence in support of BALs tracing compact flow geometries with small filling factors.
description: 25 pages, 9 figures, 5 tables, accepted to MNRAS, please visit MNRAS or contact W.N. Brandt to access supplementary material
Sex-dependent differences in vulnerability to early risk factors for posttraumatic stress disorder: results from the AURORA study
Creators: name: Haering, Stephanie
name: Seligowski, Antonia V.
name: Linnstaedt, Sarah D.
name: Michopoulos, Vasiliki
name: House, Stacey L.
name: Beaudoin, Francesca L.
name: An, Xinming
name: Neylan, Thomas C.
name: Clifford, Gari D.
name: Germine, Laura T.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: PTSD
subject: risk factors
subject: sex differences
subject: trauma
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Background Knowledge of sex differences in risk factors for posttraumatic stress disorder (PTSD) can contribute to the development of refined preventive interventions. Therefore, the aim of this study was to examine if women and men differ in their vulnerability to risk factors for PTSD. Methods As part of the longitudinal AURORA study, 2924 patients seeking emergency department (ED) treatment in the acute aftermath of trauma provided self-report assessments of pre- peri- and post-traumatic risk factors, as well as 3-month PTSD severity. We systematically examined sex-dependent effects of 16 risk factors that have previously been hypothesized to show different associations with PTSD severity in women and men. Results Women reported higher PTSD severity at 3-months post-trauma. Z-score comparisons indicated that for five of the 16 examined risk factors the association with 3-month PTSD severity was stronger in men than in women. In multivariable models, interaction effects with sex were observed for pre-traumatic anxiety symptoms, and acute dissociative symptoms; both showed stronger associations with PTSD in men than in women. Subgroup analyses suggested trauma type-conditional effects. Conclusions Our findings indicate mechanisms to which men might be particularly vulnerable, demonstrating that known PTSD risk factors might behave differently in women and men. Analyses did not identify any risk factors to which women were more vulnerable than men, pointing toward further mechanisms to explain women's higher PTSD risk. Our study illustrates the need for a more systematic examination of sex differences in contributors to PTSD severity after trauma, which may inform refined preventive interventions.
Identification and Statistical Decision Theory
Creators: name: Manski, Charles F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Econometrics (econ.EM)
subject: Statistics Theory (math.ST)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: Econometricians have usefully separated study of estimation into identification and statistical components. Identification analysis, which assumes knowledge of the probability distribution generating observable data, places an upper bound on what may be learned about population parameters of interest with finite sample data. Yet Wald's statistical decision theory studies decision making with sample data without reference to identification, indeed without reference to estimation. This paper asks if identification analysis is useful to statistical decision theory. The answer is positive, as it can yield an informative and tractable upper bound on the achievable finite sample performance of decision criteria. The reasoning is simple when the decision relevant parameter is point identified. It is more delicate when the true state is partially identified and a decision must be made under ambiguity. Then the performance of some criteria, such as minimax regret, is enhanced by randomizing choice of an action. This may be accomplished by making choice a function of sample data. I find it useful to recast choice of a statistical decision function as selection of choice probabilities for the elements of the choice set. Using sample data to randomize choice conceptually differs from and is complementary to its traditional use to estimate population parameters.
What if the fast radio bursts 110220 and 140514 are from the same source?
Creators: name: Piro, Anthony L.
name: Burke-Spolaor, Sarah
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The fast radio bursts (FRBs) 110220 and 140514 were detected at telescope pointing locations within 9 arcmin of each other over three years apart, both within the same 14.4 arcmin beam of the Parkes radio telescope. Nevertheless, they generally have not been considered to be from the same source because of a vastly different dispersion measure (DM) for the two bursts by over $380\,{\rm pc\,cm^{-3}}$. Here we consider the hypothesis that these two FRBs are from the same neutron star embedded within a supernova remnant (SNR) that provides an evolving DM as the ejecta expands and becomes more diffuse. Using such a model and the observed DM change, it can be argued that the corresponding SN must have occurred within $\approx10.2$ years of FRB 110220. Furthermore, constraints can be placed on the SN ejecta mass and explosion energy, which appear to require a stripped envelope (Type Ib/c) SN and/or a very energetic explosion. A third FRB from this location would be even more constraining, allowing the component of the DM due to the SNR to be separated from the unchanging DM components due to the host galaxy and intergalactic medium. In the future, if more FRBs are found to repeat, the sort of arguments presented here can be used to test the young neutron star progenitor hypothesis for FRBs.
description: 6 pages, 2 figures, submitted for publication in The Astrophysical Journal Letters
การบริหารโรงเรียนเทศบาลเพื่อให้เป็นองค์กรแห่งความสุข
Creators: name: สมสินธ์ รักบุญ
name: อํานวย ทองโปร่ง
Publisher: name: สมาคมปรัชญาดุษฎีบัณฑิตทางสังคมศาสตร์ มหาวิทยาลัยรามคำแหง
Year: 2563
Subjects: การบริหาร
โรงเรียนเทศบาล
องค์กรแห่งความสุข
Management
Municipality School
Happy Workplace

description: วารสารดุษฎีบัณฑิตทางสังคมศาสตร์, 10, 2, 310-320
Electron Mobility in Polarization-doped Al$\mathrm{_{0-0.2}}$GaN with a Low Concentration Near 10$\mathrm{^{17}}$ cm$\mathrm{^{-3}}$
Creators: name: Zhu, Mingda
name: Qi, Meng
name: Nomoto, Kazuki
name: Hu, Zongyang
name: Song, Bo
name: Pan, Ming
name: Gao, Xiang
name: Jena, Debdeep
name: Xing, Huili Grace
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this letter, carrier transport in graded Al$\mathrm{_x}$Ga$\mathrm{_{1-x}}$N with a polarization-induced n-type doping as low as ~ 10$\mathrm{^{17}}$ cm$\mathrm{^{-3}}$ is reported. The graded Al$\mathrm{_x}$Ga$\mathrm{_{1-x}}$N is grown by metal organic chemical vapor deposition on a sapphire substrate and a uniform n-type doping without any intentional doping is realized by linearly varying the Al composition from 0% to 20% over a thickness of 600 nm. A compensating center concentration of ~10$\mathrm{^{17}}$ cm$\mathrm{^{-3}}$ was also estimated. A peak mobility of 900 cm$\mathrm{^2}$/V$\mathrm \cdot$s at room temperature is extracted at an Al composition of ~ 7%, which represents the highest mobility achieved in n-Al$\mathrm{_{0.07}}$GaN with a carrier concentration ~10$\mathrm{^{17}}$ cm$\mathrm{^{-3}}$. Comparison between experimental data and theoretical models shows that, at this low doping concentration, both dislocation scattering and alloy scattering are significant in limiting electron mobility; and that a dislocation density of <10$\mathrm{^7}$ cm$\mathrm{^{-2}}$ is necessary to optimize mobility near 10$\mathrm{^{16}}$ cm$\mathrm{^{-3}}$. The findings in this study provide insight in key elements for achieving high mobility at low doping levels in GaN, a critical parameter in design of novel power electronics taking advantage of polarization doping.
description: 6 figures. Submitted to Applied Physics Letters
title: ADCO, Grènetier de Cîteaux : comptes (1497-1504) (11 H 1172), f. 00083
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes

description: Grènetier de Cîteaux : comptes (1497-1504), Archives départementales de la Côte-d'Or, (11 H 1172). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1497-1504), Archives départementales de la Côte-d'Or, (11 H 1172), f. 00083, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Organic carbon isotope stratigraphy of Devonian-Carboniferous boundary sections in the Rhenish Mountains
Creators: name: Korn, Dieter
name: Schmid, Franziska E.
name: Struck, Ulrich
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Devonian-Carboniferous boundary
subject: Hangenberg Event
subject: Rhenish Mountains
subject: Organic carbon isotopes
subject: Stratigraphy
subject: 500 Naturwissenschaften und Mathematik::560 Fossilien, Paläontologie::560 Paläontologie, Paläozoologie

description: The boundary between the Devonian and the Carboniferous has been drawn using ammonoids, conodonts and miospores, while geochemical data have only rarely been used. The sampling of eight sections (Aprath, Apricke, Effenberg, Wocklum, Stockum, Drewer WJ, Drewer WA, Marsberg) at the northern margin of the Rhenish Mountains demonstrates the potential of the isotope ratio of organic carbon to regionally correlate sections in different facies areas. With the help of the carbon isotopes, a distinct stratigraphic succession is documented, which is characterised by several positive and negative excursions; this succession was recorded in all examined sections. The carbon isotopes can therefore make a significant contribution to the stratigraphic subdivision of sections and complement the biostratigraphic methods.
How does the grouping scheme affect the Wiener Filter reconstruction of the local Universe?
Creators: name: Sorce, Jenny G.
name: Tempel, Elmo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: High quality reconstructions of the three dimensional velocity and density fields of the local Universe are essential to study the local Large Scale Structure. In this paper, the Wiener Filter reconstruction technique is applied to galaxy radial peculiar velocity catalogs to understand how the Hubble constant (H0) value and the grouping scheme affect the reconstructions. While H0 is used to derive radial peculiar velocities from galaxy distance measurements and total velocities, the grouping scheme serves the purpose of removing non linear motions. Two different grouping schemes (based on the literature and a systematic algorithm) as well as five H0 values ranging from 72 to 76 km/s/Mpc are selected. The Wiener Filter is applied to the resulting catalogs. Whatever grouping scheme is used, the larger H0 is, the larger the infall onto the local Volume is. However, this conclusion has to be strongly mitigated: a bias minimization scheme applied to the catalogs after grouping suppresses this effect. At fixed H0, reconstructions obtained with catalogs grouped with the different schemes exhibit structures at the proper location in both cases but the latter are more contrasted in the less aggressive scheme case: having more constraints permits an infall from both sides onto the structures to reinforce their overdensity. Such findings highlight the importance of a balance between grouping to suppress non linear motions and preserving constraints to produce an infall onto structures expected to be large overdensities. Such an observation is promising to perform constrained simulations of the local Universe including its massive clusters.
description: Accepted for publication in MNRAS, 10 pages, 6 figures, 3 tables
Electron-phonon scattering from Green's function transport combined with Molecular Dynamics: Applications to mobility predictions
Creators: name: Markussen, Troels
name: Palsgaard, Mattias
name: Stradi, Daniele
name: Gunst, Tue
name: Brandbyge, Mads
name: Stokbro, Kurt
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a conceptually simple method for treating electron-phonon scattering and phonon limited mobilities. By combining Green's function based transport calculations and molecular dynamics (MD), we obtain a temperature dependent transmission from which we evaluate the mobility. We validate our approach by comparing to mobilities and conductivies obtained by the Boltzmann transport equation (BTE) for different bulk and one-dimensional systems. For bulk silicon and gold we successfully compare against experimental values. We discuss limitations and advantages of each of the computational approaches.
description: 8 pages, 8 figures
The physical properties of T Pyx as measured by MUSE I. The geometrical distribution of the ejecta and the distance to the remnant
Creators: name: Izzo, L.
name: Pasquini, L.
name: Aydi, E.
name: Della Valle, M.
name: Gilmozzi, R.
name: Harvey, E. A.
name: Molaro, P.
name: Otulakowska-Hypka, M.
name: Selvelli, P.
name: Thöne, C. C.
name: Williams, R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: T Pyx is one of the most enigmatic recurrent novae, and it has been proposed as a potential Galactic type-Ia supernova progenitor. Using spatially-resolved data obtained with MUSE, we characterized the geometrical distribution of the material expelled in previous outbursts surrounding the white dwarf progenitor. We used a 3D model for the ejecta to determine the geometric distribution of the extended remnant. We have also calculated the nebular parallax distance ($d = 3.55 \pm 0.77$ kpc) based on the measured velocity and spatial shift of the 2011 bipolar ejecta. These findings confirm previous results, including data from the GAIA mission. The remnant of T Pyx can be described by a two-component model, consisting of a tilted ring at $i = 63.7$ deg, relative to its normal vector and by fast bipolar ejecta perpendicular to the plane of the equatorial ring. We find an upper limit for the bipolar outflow ejected mass in 2011 of the bipolar outflow of $M_{ej,b} < (3.0 \pm 1.0) \times 10^{-6}$ M$_{\odot}$, which is lower than previous estimates given in the literature. However, only a detailed physical study of the equatorial component could provide an accurate estimate of the total ejecta of the last outburst, a fundamental step to understand if T Pyx will end its life as a type-Ia supernova.
description: 9 pages, 8 figures
Mass Spectrometry Imaging of Coniine and Other Hemlock Alkaloids after On-Tissue Derivatization Reveals Distinct Alkaloid Distributions in the Plant
Creators: name: Barrera-Adame, Diana A.
name: Schuster, Sabine
name: Niedermeyer, Timo H. J.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Ions
subject: Mass spectrometry
subject: Organic compounds
subject: Plants
subject: Surface analysis
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Specialized metabolites play important roles in plants and can, for example, protect plants from predators or pathogens. Alkaloids, due to their pronounced biological activity on higher animals, are one of the most intriguing groups of specialized metabolites, and many of them are known as plant defense compounds. Poison hemlock, Conium maculatum, is well-known for its high content of piperidine alkaloids, of which coniine is the most famous. The distribution, localization, and diversity of these compounds in C. maculatum tissues have not yet been studied in detail. The hemlock alkaloids are low molecular weight compounds with relatively high volatility. They are thus difficult to analyze on-tissue by MALDI mass spectrometry imaging due to delocalization, which occurs even when using an atmospheric pressure ion source. In this manuscript, we describe an on-tissue derivatization method that allows the subsequent determination of the spatial distribution of hemlock alkaloids in different plant tissues by mass spectrometry imaging. Coniferyl aldehyde was found to be a suitable reagent for derivatization of the secondary amine alkaloids. The imaging analysis revealed that even chemically closely related hemlock alkaloids are discretely distributed in different plant tissues. Additionally, we detected a yet undescribed hemlock alkaloid in Conium maculatum seeds.
Investigating episodic mass loss in evolved massive stars: I. Spectroscopy of dusty massive stars in ten southern galaxies
Creators: name: Bonanos, A. Z.
name: Tramper, F.
name: de Wit, S.
name: Christodoulou, E.
name: Munoz-Sanchez, G.
name: Antoniadis, K.
name: Athanasiou, S.
name: Maravelias, G.
name: Yang, M.
name: Zapartas, E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The ASSESS project aims to determine the role of episodic mass-loss in the evolution of massive stars. As a first step, we construct a catalog of spectroscopically identified dusty, evolved massive stars in ten southern galaxies for which Spitzer point-source catalogs are available. We conducted multi-object spectroscopy of dusty massive star candidates in these galaxies (spanning Z = 0.06-1.6 Zo) using the VLT. We obtained 763 spectra in WLM, NGC 55, NGC 247, NGC 253, NGC 300, NGC 1313, NGC 3109, Sextans A, M83 and NGC 7793. The targets were selected using their Spitzer photometry, by prioritizing targets with a strong infrared excess. We determined a spectral classification for each target. Additionally, we used archival images from the HST to provide a visual classification for 80 targets, as a star, cluster, or galaxy. We provide a catalog of 541 spectroscopically classified sources including 185 massive stars, of which 154 are newly classified massive stars. The catalog contains 129 red supergiants, 27 blue supergiants, 10 yellow supergiants, four luminous blue variable candidates, seven supergiant B[e] stars and eight emission line objects. Evidence for circumstellar dust is found in 24% of these massive stars, based on their infrared colors. We report a success rate of 28% for identifying massive stars among our observed spectra, while the average success rate of our priority system in selecting evolved massive stars was 36%. Additionally, the catalog contains 21 background galaxies (including AGN and quasars), 10 carbon stars and 99 HII regions. We measured the line ratios [NII]/Ha and [SII]/Ha for 76 HII regions and 36 other spectra with nebular emission-lines, thereby identifying eight sources with shocked emission. We present the largest catalog of evolved massive stars and in particular of red supergiants in nearby galaxies at low Z beyond the Local Group.
description: 47 pages, 7 figures, 9 tables, 5 appendices. Accepted for publication in A&A
Deep underground rotation measurements: GINGERino ring laser gyroscope in Gran Sasso
Creators: name: Belfi, Jacopo
name: Beverini, Nicolo'
name: Bosi, Filippo
name: Carelli, Giorgio
name: Cuccato, Davide
name: De Luca, Gaetano
name: Di Virgilio, Angela
name: Gebauer, Andre'
name: Maccioni, Enrico
name: Ortolan, Antonello
name: Porzio, Alberto
name: Saccorotti, Gilberto
name: Simonelli, Andreino
name: Terreni, Giuseppe
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: GINGERino is a large frame laser gyroscope investigating the ground motion in the most inner part of the underground international laboratory of the Gran Sasso, in central Italy. It consists of a square ring laser with a $3.6$ m side. Several days of continuous measurements have been collected, with the apparatus running unattended. The power spectral density in the seismic bandwidth is at the level of $10^{-10} \rm{(rad/s)/\sqrt{Hz}}$. A maximum resolution of $30\,\rm{prad/s}$ is obtained with an integration time of few hundred seconds. The ring laser routinely detects seismic rotations induced by both regional earthquakes and teleseisms. A broadband seismic station is installed on the same structure of the gyroscope. First analysis of the correlation between the rotational and the translational signal are presented.
description: Accepted for publication in Review in Scientific Instruments
Asymmetric Double Tax Treaties: Relief Method and Tax Sparing for Foreign Direct Investment in Developing Countries
Creators: name: Shehaj, Pranvera
name: Zagler, Martin
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: asymmetric tax treaties
subject: FDI
subject: double tax relief method
subject: tax sparing
subject: treaty network
subject: CIT
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: This paper focuses on asymmetric tax treaties and investigates from an empirical perspective the impact of OECD member states’ double tax relief method and of treaty tax-sparing provisions on investments in developing countries, while considering network effects. Our results suggest that having a treaty between the OECD member state and the developing country, which improves the investor's conditions in terms of tax burden, by changing the unilateral tax relief method, increases FDI to the developing country. The positive effect prevails when investigated within investments made through the direct route from residence to source. Results suggest that OECD member states offer tax-sparing provisions mostly to less-developed economies, which already receive very low FDI. Finally, we extend the investigation to an analysis of the impact of residence countries’ tax relief methods on source countries’ domestic tax policy. Our results suggest that developing countries set higher CIT rates when the OECD member state relieves double taxation through the exemption method, as compared to when it offers a foreign tax credit.
Pedestal and edge turbulence characteristics from an XGC1 gyrokinetic simulation
Creators: name: Churchill, R. M.
name: Chang, C. S.
name: Ku, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Understanding the multi-scale neoclassical and turbulence physics in the edge region (pedestal + scrape-off layer) is required in order to reliably predict performance in future fusion devices. We explore turbulent characteristics in the edge region from a multiscale neoclassical and turbulent XGC1 gyrokinetic simulation in a DIII-D like tokamak geometry, here excluding neutrals and collisions. For an H-mode type plasma with steep pedestal, it is found that the electron density fluctuations increase towards the separatrix, and stay high well into the SOL, reaching a maximum value of $δn_e / \bar{n}_e \sim 0.18$. Blobs are observed, born around the magnetic separatrix surface and propagate radially outward with velocities generally less than 1 km/s. Strong poloidal motion of the blobs is also present, near 20 km/s, consistent with $E \times B$ rotation. The electron density fluctuations show a negative skewness in the closed field line pedestal regions, consistent with the presence of "holes", followed by a transition to strong positive skewness across the separatrix and into the SOL. These simulations indicate that not only neoclassical phenomena, but also turbulence, including the blob-generation mechanism, can remain important in the steep H-mode pedestal and SOL. Qualitative comparisons will be made to experimental observations.
title: ADCO, Cartulaire de Cîteaux pour les possessions de Beaune et du Beaunois (XVe siècle), Cart. 174 (11 H 79), 56 pages, f. 0039
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire de Cîteaux pour les possessions de Beaune et du Beaunois (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 174 (11 H 79), 56 pages, f. 0039, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions de Beaune et du Beaunois (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 174 (11 H 79), 56 pages, f. 0039, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Covariant operator bases for continuous variables
Creators: name: Goldberg, A. Z.
name: Klimov, A. B.
name: Leuchs, G.
name: Sanchez-Soto, L. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent-state representations are a standard tool to deal with continuous-variable systems, as they allow one to efficiently visualize quantum states in phase space. Here, we work out an alternative basis consisting of monomials on the basic observables, with the crucial property of behaving well under symplectic transformations. This basis is the analogue of the irreducible tensors widely used in the context of SU(2) symmetry. Given the density matrix of a state, the expansion coefficients in that basis constitute the multipoles, which describe the state in a canonically covariant form that is both concise and explicit. We use these quantities to assess properties such as quantumness or Gaussianity and to furnish direct connections between tomographic measurements and quasiprobability distribution reconstructions.
description: 23 pages, 5 figures
A note on the semiclassical measure at singular points of the boundary of the Bunimovich stadium
Creators: name: Mangoubi, Dan
name: Weiser, Adi Weller
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: An argument by Hassell proving the existence of a Bunimovich stadium for which there are semiclassical measures giving positive mass to the submanifold of bouncing ball trajectories uses a notion of non-gliding points. However, this notion is defined only for domains with $C^2$-boundaries. The purpose of this note is to clarify the argument.