cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coherent emission from QED cascades in pulsar polar caps
Creators: name: Cruz, Fábio
name: Grismayer, Thomas
name: Chen, Alexander Y.
name: Spitkovsky, Anatoly
name: Silva, Luis O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Pulsar magnetospheres are thought to be filled with electron-positron plasma generated in pair cascades. The driving mechanism of these cascades is the emission of gamma-ray photons and their conversion into pairs via Quantum Electrodynamics (QED) processes. In this work, we present 2D particle-in-cell simulations of pair cascades in pulsar polar caps with realistic magnetic field geometry that include the relevant QED processes from first principles. Our results show that, due to variation of magnetic field curvature across the polar cap, pair production bursts self-consistently develop an inclination with respect to the local magnetic field that favors the generation of coherent electromagnetic modes with properties consistent with pulsar radio emission. We show that this emission is peaked along the magnetic axis and close to the polar cap edge and may thus offer an explanation for the core and conal components of pulsar radio emission.
description: 7 pages, 4 figures, accepted for publication in ApJL
Tuning Kinetic Magnetism of Strongly Correlated Electrons via Staggered Flux
Creators: name: Wang, Yi-Fei
name: Gong, Chang-De
name: Wang, Z. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore the kinetic magnetism of the infinite-$U$ repulsive Hubbard models at low hole densities on various lattices with nearest-neighbor hopping integrals modulated by a staggered magnetic flux $\pmϕ$. Tuning $ϕ$ from 0 to $π$ makes the ground state (GS) change from a Nagaoka-type ferromagnetic state to a Haerter-Shastry-type antiferromagnetic state at a critical $ϕ_c$, with both states being of kinetic origin. Intra-plaquette spin correlation, as well as the GS energy, signals such a quantum criticality. This tunable kinetic magnetism is generic, and appears in chains, ladders and two-dimensional lattices with squares or triangles as elementary constituents.
description: 4 pages, 5 figures, 1 table
Inheritance Mechanisms: A Collaborative Presentation
Creators: name: DiGennaro, Carla
Publisher: name: QUBES Educational Resources
Year: 2025

description: Students will be assigned groups and each group will be assigned a topic (Sex-linked traits, incomplete dominance, epistasis, epigenetics and codominance). The students will have time and resources to research their assigned topic and they will answer questions in an online, collaborative slide deck. Each group will then present their slides to the class, with each group member speaking and explaining a topic.
Roswitha Loew, Anke Pfeifer, Vom Berliner "Flohmarktidyll" zum "Labyrinth aus Bretterbuden". Polenbilder im deutschen Pressediskurs (1989-1997)
Creators: name: Imhof, Michael
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2000

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 49 Nr. 3 (2000)
Effective Actions for Loop Quantum Cosmology in Fourth-Order Gravity
Creators: name: Miranda, Marcello
name: Vernieri, Daniele
name: Capozziello, Salvatore
name: Lobo, Francisco S. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Loop Quantum Cosmology (LQC) is a theory which renders the Big Bang initial singularity into a quantum bounce, by means of short range repulsive quantum effects at the Planck scale. In this work, we are interested in reproducing the effective Friedmann equation of LQC, by considering a generic $f(R,P,Q)$ theory of gravity, where $R=g^{μν}R_{μν}$ is the Ricci scalar, $P=R_{μν}R^{μν}$, and $Q=R_{αβμν}R^{αβμν}$ is the Kretschmann scalar. An order reduction technique allows us to work in $f(R,P,Q)$ theories which are perturbatively close to General Relativity, and to deduce a modified Friedmann equation in the reduced theory. Requiring that the modified Friedmann equation mimics the effective Friedmann equation of LQC, we are able to derive several functional forms of $f(R,P,Q)$. We discuss the necessary conditions to obtain viable bouncing cosmologies for the proposed effective actions of $f(R,P,Q)$ theory of gravity.
description: v1: 15 pages; v2: 16 pages. Matches published version in EPJC
Universitäten in nationaler Konkurrenz. Zur Geschichte der Prager Universitäten im 19. und 20. Jahrhundert
Creators: name: Maurer, Trude
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 2 (2004)
Past/Future Engagements
Creators: name: Bhattacharyya, Debjani
Publisher: name: KULT_online
Year: 2006

description: Die Beiträge des Sammelbandes setzen sich aus kulturwissenschaftlicher Perspektive mit verschiedenen theoretischen Konzepten von Erinnerung, Geschichte, Vergangenheit und deren Zusammenhang zu Zukunft, Dystopie und Utopie auseinander. Dabei erforschen sie politische, ethische, intellektuelle oder ästhetische Motivationen, die den verschiedenen Ansätzen zur Analyse der kulturellen Funktionen, die Vergangenheit und Zukunft erfüllen können, zugrunde liegen.
description: KULT_online, Nr. 11 (2006): KULT_online 11 (2006)
Haemogamasus mandschuricus Vitzthum 1930
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 42. Haemogamasus mandschuricus Vitzthum, 1930
 Host/Habitat. Cricetulus triton (greater long-tailed hamster), Myospalax scansus, Vespertilio superans (Asian parti-colored bat).
 Distribution. Taiyuan, Wutai, Xixian, Youyu (Tian 1984); Shanxi (Ma et al. 1994; Ren & Guo 2008; Ren & Guo 2009).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 10, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
Superconductivity at 36 K in Gadolinium-arsenide Oxides GdO$_{1-x}$F$_{x}$FeAs
Creators: name: Cheng, Peng
name: Fang, Lei
name: Yang, Huan
name: Zhu, Xiyu
name: Mu, Gang
name: Luo, Huiqian
name: Wang, Zhaosheng
name: Wen, Hai-Hu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper we report the fabrication and superconducting properties of GdO$_{1-x}$F$_{x}$FeAs. It is found that when x is equal to 0.17, GdO$_{0.83}$F$_{0.17}$FeAs is a superconductor with the onset transition temperature T$_{c}^{on}\approx$ 36.6K. Resistivity anomaly near 130K was observed for all samples up to x = 0.17, such a phenomenon is similar to that of LaO$_{1-x}$F$_{x}$FeAs. Hall coefficient indicates that GdO$_{0.83}$F$_{0.17}$FeAs is conducted by electron-like charge carriers.
description: 3 pages, 4 figures
Self-Equalization of Energies of Solitons in Transmission Systems by Guiding Filters
Creators: name: Shahruz, Shahram M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this paper, the regulating effect of guiding filters on the energies of solitons in wave-length division multiplexing (WDM) transmission systems is rigorously studied. More precisely, it is shown that guiding filters prevent the energies of solitons from decaying to zero in long distances. This goal is achieved by studying a mathematical model of the evolution of energies of solitons in transmission systems. The approach is mathematical and does not use numerical or experimental results available in the literature; nevertheless, it reaffirms such results.
description: 20 pages
Burkhardt Köhler, Pommersche Musikkultur in der ersten Hälfte des 17. Jahrhunderts. Mit einer Bibliographie pommerscher Musikalien
Creators: name: Unverricht, Hubert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 3 (1998)
Reflexionen über die Moral
Creators: name: Ahn, Hehn-Chu
Publisher: name: KULT_online
Year: 2009

description: Der Kunsthistorikerin Julia Murray ist es mit der Monographie Mirror of morality gelungen, an vielen konkreten Fallbeispielen Bilder mit konfuzianischem Inhalt in den jeweiligen Nutzungszusammenhängen zu kontextualisieren. Die Stärke dieses Bandes liegt darüber hinaus in dem breiten Materialkorpus und der damit einhergehenden Medienvielfalt, derer sich die Autorin bedient. Die zeitliche Spanne reicht vom zweiten Jahrhundert v. Chr. bis zur Qing Dynastie (1644-1911) und von Malereien auf Hänge- sowie Querrollen bis zu Illustrationen in Moralhandbüchern. Murray bietet unter der zentralen Fragestellung des narrativen Potentials eines jeden Bildes eine umfassende Überblicksdarstellung zu narrativen Illustrationen des Konfuzianismus während der chinesischen Kaiserzeit.
description: KULT_online, Nr. 19 (2009): KULT_online 19 (2009)
Informed Traders
Creators: name: Brody, Dorje C.
name: Davis, Mark H. A.
name: Friedman, Robyn L.
name: Hughston, Lane P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Information Theory (cs.IT)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: An asymmetric information model is introduced for the situation in which there is a small agent who is more susceptible to the flow of information in the market than the general market participant, and who tries to implement strategies based on the additional information. In this model market participants have access to a stream of noisy information concerning the future return of an asset, whereas the informed trader has access to a further information source which is obscured by an additional noise that may be correlated with the market noise. The informed trader uses the extraneous information source to seek statistical arbitrage opportunities, while at the same time accommodating the additional risk. The amount of information available to the general market participant concerning the asset return is measured by the mutual information of the asset price and the associated cash flow. The worth of the additional information source is then measured in terms of the difference of mutual information between the general market participant and the informed trader. This difference is shown to be nonnegative when the signal-to-noise ratio of the information flow is known in advance. Explicit trading strategies leading to statistical arbitrage opportunities, taking advantage of the additional information, are constructed, illustrating how excess information can be translated into profit.
description: 20 pages, 5 figures. Version to appear in the Proceedings of the Royal Society A
Late-Time Evolution and Modeling of the Off-Axis Gamma-ray Burst Candidate FIRST J141918.9+394036
Creators: name: Mooley, K. P.
name: Margalit, B.
name: Law, C. J.
name: Perley, D. A.
name: Deller, A. T.
name: Lazio, T. J. W.
name: Bietenholz, M. F.
name: Shimwell, T.
name: Intema, H. T.
name: Gaensler, B. M.
name: Metzger, B. D.
name: Dong, D. Z.
name: Hallinan, G.
name: Ofek, E. O.
name: Sironi, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present new radio and optical data, including very long baseline interferometry, as well as archival data analysis, for the luminous decades-long radio transient FIRST J141918.9+394036. The radio data reveal a synchrotron self-absorption peak around 0.3 GHz and a radius of around 1.3 mas (0.5 pc) 26 years post-discovery, indicating a blastwave energy $\sim5 \times 10^{50}$ erg. The optical spectrum shows a broad [OIII]$λ$4959,5007 emission-line that may indicate collisional-excitation in the host galaxy, but its association with the transient cannot be ruled out. The properties of the host galaxy are suggestive of a massive stellar progenitor that formed at low metallicity. Based on the radio light curve, blastwave velocity, energetics, nature of the host galaxy and transient rates we find that the properties of FIRST J1419+39 are most consistent with long gamma-ray burst (LGRB) afterglows. Other classes of (optically-discovered) stellar explosions as well as neutron star mergers are disfavored, and invoking any exotic scenario may not be necessary. It is therefore likely that FIRST J1419+39 is an off-axis LGRB afterglow (as suggested by Law et al. and Marcote et al.), and under this premise the inverse beaming fraction is found to be $f_b^{-1}\simeq280^{+700}_{-200}$, corresponding to an average jet half-opening angle $\simeq5^{+4}_{-2}$ degrees (68% confidence), consistent with previous estimates. From the volumetric rate we predict that surveys with the VLA, ASKAP and MeerKAT will find a handful of FIRST J1419+39-like events over the coming years.
description: 23 pages, 7 figures, 2 tables. Accepted in ApJ
title: Investigating the phenomenon of career promotions: 
a gender perspective
Creators: name: Aloyan, Kristina
Publisher: name: Goldsmiths, University of London
Year: 2022

description: This thesis examines possible determinants of gender differences in career promotions. Previous research presents some evidence suggesting that women are often disadvantaged when it comes to promotions, including access to senior positions and powerful decision-making groups. However, the topic of gender and promotions lacks a comprehensive assessment with findings scattered across different fields of research. This thesis attempts to understand the extent of the problem and explore the factors that might cause gender differences in promotions. It builds on the existing literature within organisational and occupational psychology, sociology, and management. The thesis comprises of four empirical studies. Study 1 presents a meta-analysis of gender differences in promotions and examines several moderators. It reveals a small but significant gender difference in promotions; marital status and work experience are important moderators between the promotions – gender relationship. Study 2 examines gender differences in career interests as an explanatory factor for variation in career achievements using confirmatory factor analysis. It reveals a small gender difference in career interests and highlights the need to explore the link between interests and career achievements further. Study 3 adopts a social network analysis perspective and explores the moderating role of gender between features of formal networks and various career outcomes. It shows that gender moderates the relationship between network density and high potential membership. Finally, Study 4 examines men’s and women’s perceptions of communication patterns at work in relation to promotions and seniority. It reveals a significant moderation effect of gender between external perceptions of individuals’ communication patterns in the workplace settings and promotions. The thesis concludes with a discussion of recommendations that might facilitate women’s promotions in organisations. It also presents the limitations and directions for future research.
Hedwig Nosbers, Polnische Literatur in der Bundesrepublik Deutschland 1945/1949 bis 1990. Buchwissenschaftliche Aspekte
Creators: name: Trepte, Hans-Christian
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2000

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 49 Nr. 3 (2000)
A simple model of Coulomb disorder and screening in graphene
Creators: name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We suggest a simple model of disorder in graphene assuming that there are randomly distributed positive and negative centers with equal concentration $N/2$ in the bulk of silicon oxide substrate. We show that at zero gate voltage such disorder creates two-dimensional concentration $n_0 \sim N^{2/3}$ of electrons and holes in graphene. Electrons and holes reside in alternating in space puddles of the size $R_0 \sim N^{-1/3}$. A typical puddle has only one or two carriers in agreement with recent scanning single electron transistor experiment.
description: 2.5 pages, twice longer than previous version
Haemogamasus serdjukovae Bregetova 1949
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 43. Haemogamasus serdjukovae Bregetova, 1949
 Host/Habitat. Eutamias sibiricus (Siberian chipmunk).
 Distribution. Gujiao, Kelan, Yushe (Tian 1984); Shanxi (Ren & Guo 2008; Ren & Guo 2009).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 10, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
Dynamical Coulomb blockade under a temperature bias
Creators: name: Duprez, H.
name: Pierre, F.
name: Sivre, E.
name: Aassime, A.
name: Parmentier, F. D.
name: Cavanna, A.
name: Ouerghi, A.
name: Gennser, U.
name: Safi, I.
name: Mora, C.
name: Anthore, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observe and comprehend the dynamical Coulomb blockade suppression of the electrical conductance across an electronic quantum channel submitted to a temperature difference. A broadly tunable, spin-polarized Ga(Al)As quantum channel is connected on-chip, through a micron-scale metallic node, to a linear $RC$ circuit. The latter is made up of the node's geometrical capacitance $C$ in parallel with an adjustable resistance $R\in \{1/2,1/3,1/4\}\times h/e^2$ formed by 2--4 quantum Hall channels. The system is characterized by three temperatures: a temperature of the electrons in the large electrodes ($T$) and in the node ($T_\mathrm{node}$), and a temperature of the electromagnetic modes of the $RC$ circuit ($T_\mathrm{env}$). The temperature in the node is selectively increased by local Joule dissipation, and characterized from current fluctuations. For a quantum channel in the tunnel regime, a close match is found between conductance measurements and tunnel dynamical Coulomb blockade theory. In the opposite near ballistic regime, we develop a theory that accounts for different electronic and electromagnetic bath temperatures, again in very good agreement with experimental data. Beyond these regimes, for an arbitrary quantum channel set in the far out-of-equilibrium situation where the temperature in the node significantly exceeds the one in the large electrodes, the equilibrium (uniform temperature) prediction for the conductance is recovered, albeit at a rescaled temperature $αT_\mathrm{node}$.
description: Submitted
Positive definite collections of disks
Creators: name: Tkachev, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 30E05; 15A48; 33C10; 26C10

description: Let $Q(z,w)=-\prod_{k=1}^n [(z-a_k)(\bar{w}-\bar{a}_k)-R_k^2]$. M. Putinar and B. Gustafsson proved recently that the matrix $Q(a_i,a_j)$, $1\leq i,j\leq n$, is positive definite if disks $|z-a_i|
description: 24 pages
Briefe aus dem Nachlass des "Bauernbefreiers" Hans Kudlich (1823-1917)
Creators: name: Fenske, Hans
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 2 (2004)
Theoretical study of reactions in the three body $e^-e^+\bar{p}$ system and antihydrogen formation cross sections
Creators: name: Gradusov, V. A.
name: Roudnev, V. A.
name: Yarevsky, E. A.
name: Yakovlev, S. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We apply a new highly efficient method of solving Faddeev-Merkuriev equations to multi-channel scattering calculations of the antihydrogen formation cross section for antiproton scattering off the ground and excited states of the positronium. Our results demonstrate good agreement with the known data on total and partial cross sections for all the reaction channels. Using moderate computational resources we have achieved a supreme energy resolution.
Be stars and binaries in the field of the SMC open cluster NGC330 with VLT-FLAMES
Creators: name: Martayan, Christophe
name: Floquet, Michele
name: Hubert, Anne-Marie
name: Gutiérrez-Soto, Juan
name: Fabregat, Juan
name: Neiner, Coralie
name: Mekkas, Malek
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of hot stars belonging to the young cluster SMC-NGC330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We investigated the B and Be star properties and proportions in this environment of low metallicity. We also searched for rapid variability in Be stars using photometric databases. With spectroscopic measurements we characterized the emission and properties of Be stars. By cross-correlation with photometric databases such as MACHO and OGLE, we searched for binaries in our sample of hot stars, as well as for short-term variability in Be stars. We report on the global characteristics of the Be star sample (131 objects). We find that the proportion of early Be stars with a large equivalent width of the Halpha emission line is higher in the SMC than in the LMC and MW. We find a slight increase in the proportion of Be stars compared to B-type stars with decreasing metallicity. We also discovered spectroscopic and photometric binaries, and for the latter we give their orbital period. We identify 13 Be stars with short-term variability. We determine their period(s) and find that 9 Be stars are multiperiodic.
description: english not yet corrected, 23 pages, 4th article about the study in the LMC NGC2004 and SMC NGC330
Business archives : historical developments and future prospects
Creators: name: Hives, Christopher
Publisher: name: University of British Columbia
Year: 2010

description: This thesis attempts to identify the reasons why business archives have not been widely developed in North America and to suggest the changes which are necessary to correct the situation. Although this study addresses itself specifically to the experience of business archives, many of the issues it discusses can easily be related to other forms of corporate archives such as those, for example, of a municipality, university, labour union, or hospital. All corporate archives confront the common problem that the practical value of an archival programme must be clearly demonstrated. This usually involves justification based primarily on administrative rather than cultural criteria. Therefore, this study aims overall to place business archives within a broader discussion of the purposes which archives ought to serve in our community. The underlying theme of this thesis is the need to formulate a more comprehensive view of the role of archives than has been evident in the past, one which is sufficiently flexible to respond to the changing and diverse requirements of modern society. This requires that the archivist accept a broader role than he accepted in the past, when he often served as a passive custodian patiently awaiting the arrival of "retired" documents. An analysis of the development of business archives illustrates that a strictly historical criterion for maintaining records has met with only limited success in the corporate community. Rather than attempting to convince businessmen as to the cultural benefits (important as they are) to be derived from the establishment of an archival programme, it might be more prudent to emphasize new potential services which could be rendered to the sponsoring agencies. In exploring this proposition the thesis first considers the elements influencing the historical growth of business archives and then suggests potential new areas into which corporate archivists might move. The study also discusses the ramifications of these changes for issues such as appraisal and access and, finally, identifies those factors which will be particularly important in determining the future success of business archives. In assuming such a broad approach to the study of corporate archives, the thesis raises some fundamental questions about the orientation of the archival profession and, as such, may contribute to the formulation of archival theory.
Günther Seipelt, Geschichte von Trebisch, Kreis Schwerin/Warthe
Creators: name: Kenéz, Csaba János
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 3 (1998)
Impact of gas spin and Lyman-Werner flux on black hole seed formation in cosmological simulations: implications for direct collapse
Creators: name: Bhowmick, Aklant K.
name: Blecha, Laura
name: Torrey, Paul
name: Kelley, Luke Zoltan
name: Vogelsberger, Mark
name: Nelson, Dylan
name: Weinberger, Rainer
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Direct collapse black holes~(BH) are promising candidates for producing massive $z\gtrsim 6$ quasars, but their formation requires fine-tuned conditions. In this work, we use cosmological zoom simulations to study systematically the impact of requiring: 1) low gas angular momentum, and 2) a minimum incident Lyman-Werner~(LW) flux in order to form BH seeds. We probe the formation of seeds (with initial masses of $M_{\rm seed} \sim 10^4$ - $10^6 M_{\odot}/h)$ in halos with a total mass $> 3000\times M_{\mathrm{seed}}$ and a dense, metal poor gas mass $> 5\times M_{\mathrm{seed}}$. We find that the seed-forming halos have a prior history of star formation and metal enrichment, but contain pockets of dense, metal poor gas. When seeding is further restricted to halos with low gas spins, the number of seeds formed is suppressed by factors of $\sim6$ compared to the baseline model, regardless of the seed mass. Seed formation is much more strongly impacted if the dense, metal poor gas is required to have a critical LW flux ($J_{\mathrm{crit}}$). Even for $J_{\mathrm{crit}}$ values as low as $50J_{21}$, no $8\times10^{5}M_{\odot}/h$ seeds are formed. While lower mass ($1.25\times10^{4},1\times10^{5} M_{\odot}/h$) seeds do form, they are strongly suppressed~(by factors of $\sim10-100$) compared to the baseline model at gas mass resolutions of $\sim10^4~M_{\odot}/h$ (with even stronger suppression at higher resolutions). As a result, BH merger rates are also similarly suppressed. Since early BH growth is dominated by mergers in our models, no seeds are able to grow to the supermassive regime~($\gtrsim10^6 M_{\odot}/h$) by $z=7$. Our results hint that producing the bulk of the $z\gtrsim6$ supermassive BH population may require alternate seeding scenarios that do not depend on the LW flux, early BH growth dominated by rapid or super-Eddington accretion, or a combination of these possibilities.
description: 21 pages, 13 figures
Ion Movement, Membrane Potential, and Neural Excitability
Creators: name: Nielson, Lisa
Publisher: name: QUBES Educational Resources
Year: 2025

description: Ion movement, resting membrane potential and neural excitability group activity: In this activity students are placed into small groups where they learn about ion driving forces, equilibrium potentials, and resting membrane potentials. As students work through a slide deck they learn about these topics by reading, watching video-links, and working on problems. Activities include predicting ion movement, using the Nernst and Goldman Equations, evaluating how ion concentration contributes to neural excitability. This activity starts and ends with a pre- post- activity survey to assess their knowledge.
The Problem of Idleness: An Arendtian Justification of Universal Basic Income in the Face of Mass Automation
Creators: name: Lewicki, James
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Universal Basic Income
Hannah Arendt
Karl Marx
Social
Art
Automation
Postwork
Antiwork
Sara Ahmed
Phenomenology
The Human Condition
On Revolution
job-holding
Welfare

description: This dissertation is concerned with a fundamental problem at the heart of Arendt’s The Human Condition—namely, ‘the problem of idleness’. This problem is related to the three types of human Arendt identifies as correlated to dominant activities in one’s life, animal laborans, homo faber, and the acting person. It explores Arendt’s predictions of an oncoming automation crisis, and the possibility of a corresponding crisis in the production—consumption cycle. The problem of idleness can be understood as the claim that if people are provided freedom from job-holding so that they may pursue other activities, they would likely turn to consumption to occupy their time. I claim that this problem of idleness is important in any consideration of an oncoming automation crisis, especially in relation to Universal Basic Income (UBI) as a solution to such a crisis. I claim that there is a hole in the UBI literature concerning this problem of idleness, and if left unaddressed it would result in both an ineffective UBI, and in a crisis of meaning for the general populace. This dissertation demonstrates what the problem of idleness is, why it is important, and what possible solutions exist. This contributes to the UBI literature by diagnosing and attempting to solve a gap in the literature which I argue would cause practical challenges in the implementation and stability of a UBI system. I also contribute to the Arendtian literature by problematizing traditional readings of Arendt, and offering a reappraisal of her thought on Marx, art, and the social.
Influence of Shape Resonances on the Angular Dependence of Molecular Photoionization Delays
Creators: name: Holzmeier, Fabian
name: Joseph, Jennifer
name: Houver, Jean-Christophe
name: Lebech, Mogens
name: Dowek, Danielle
name: Lucchese, Robert R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Characterizing time delays in molecular photoionization as a function of the ejected electron emission direction relative to the orientation of the molecule and the light polarization axis pro-vides unprecedented insights into the attosecond dynamics induced by extreme ultraviolet or X-ray one-photon absorption, including the role of electronic correlation and continuum resonant states. Here, we report completely resolved experimental and computational angular depend-ence of single-photon ionization delays in NO molecules across a shape resonance, relying on synchrotron radiation and time independent ab initio calculations. The angle-dependent time delay variations of few hundreds of attoseconds, resulting from the interference of the resonant and non-resonant contributions to the dynamics of the ejected electron, are well described using a multichannel Fano model where the resonance time delay is angle-independent. Comparing these results with the same resonance computed in e-NO+ scattering highlights the connection of photoionization delays with Wigner scattering time delays.
description: 21 pages, 10 figures, supporting material included
Charged Current Neutrino Cross Section and Tau Energy Loss at Ultra-High Energies
Creators: name: Armesto, N.
name: Merino, C.
name: Parente, G.
name: Zas, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate both the tau lepton energy loss produced by photonuclear interactions and the neutrino charged current cross section at ultra-high energies, relevant to neutrino bounds with Earth-skimming tau neutrinos, using different theoretical and phenomenological models for nucleon and nucleus structure functions. The theoretical uncertainty is estimated by taking different extrapolations of the structure function F2 to very low values of x, in the low and moderate Q2 range for the tau lepton interaction and at high Q2 for the neutrino-nucleus inelastic cross section. It is at these extremely low values of x where nuclear shadowing and parton saturation effects are unknown and could be stronger than usually considered. For tau and neutrino energies E=10^9 GeV we find uncertainties of a factor 4 for the tau energy loss and of a factor 2 for the charged current neutrino-nucleus cross section.
description: 20 pages and 11 figures
Tomasz Jurek, Dziedzic królestwa polskiego książę głogowski Henryk (1274-1309)
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 1 (1996)
Topologically protected two-fluid edge states
Creators: name: Zhang, K. L.
name: Song, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Edge states reveal the nontrivial topology of energy band in the bulk. As localized states at boundaries, many-body edge states may obey a special symmetry that is broken in the bulk. When local particle-particle interaction is induced, they may support a particular property. We consider an extended two-dimensional Su-Schrieffer-Heeger Hubbard model and examine the appearance of $η$-pairing states, which are excited eigenstates related to superconductivity. In the absence of Hubbard interaction, the energy band is characterized by topologically invariant polarization in association with edge states. In the presence of on-site Hubbard interaction, $η$-pairing edge states appear in the topologically nontrivial phase, resulting in the condensation of pairs at the boundary. In addition, as Hamiltonian eigenstates, the edge states contain paired fermions and unpaired fermions. Neither affects the other; they act as two-fluid states. From numerical simulations of many-body scattering processes, a clear manifestation and experimental detection scheme of topologically protected two-fluid edge states are provided.
description: 11 pages, 9 figures
The optimal filters for the construction of the ensemble pulsar time
Creators: name: Rodin, Alexander E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The algorithm of the ensemble pulsar time based on the optimal Wiener filtration method has been constructed. This algorithm allows the separation of the contributions to the post-fit pulsar timing residuals of the atomic clock and pulsar itself. Filters were designed with the use of the cross- and autocovariance functions of the timing residuals. The method has been applied to the timing data of millisecond pulsars PSR B1855+09 and PSR B1937+21 and allowed the filtering out of the atomic scale component from the pulsar data. Direct comparison of the terrestrial time TT(BIPM06) and the ensemble pulsar time PT$_{\rm ens}$ revealed that fractional instability of TT(BIPM06)--PT$_{\rm ens}$ is equal to $σ_z=(0.8\pm 1.9)\cdot 10^{-15}$. Based on the $σ_z$ statistics of TT(BIPM06)--PT$_{\rm ens}$ a new limit of the energy density of the gravitational wave background was calculated to be equal to $Ω_g h^2 \sim 3\cdot 10^{-9}$.
description: 6 pages, 5 figures
Haemolaelaps glasgowi Ewing 1926
Creators: name: Ma, Min
name: Li, Sheng-Cai
name: Fan, Qing-Hai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy

description: 44. Haemolaelaps glasgowi (Ewing, 1926)
 Host/Habitat. Rodents.
 Distribution. Jiangxian, Yicheng (Zhang et al. 1999).
description: Published as part of Ma, Min, Li, Sheng-Cai & Fan, Qing-Hai, 2015, Mites and ticks (Acari) in Shanxi Province, China: an annotated checklist, pp. 1-39 in Zootaxa 4006 (1) on page 10, DOI: 10.11646/zootaxa.4006.1.1, http://zenodo.org/record/289262
Introduction. Artistic/Literary Spaces and Borders: A Brief Introduction to the Monographic Issue n. 4
Creators: name: Bianchi, Marina
Publisher: name: Jan Kochanowski University Press
Year: 2023

description: Contents 5 Marina Bianchi Artistic/Literary Spaces and Borders: A Brief Introduction to the Monographic Issue n. 4 Articles 11 Francesca Guidotti Charlotte Lennox’s Path to The Female Quixote: A Journey Along and Across Borders 35 José María Balcells Doménech Amor de Láser de Rafael Ballesteros: una poética de transgresión vanguardista 53 Francisco Javier Escobar Borrego “Palabras del agua” y “versos en piedra”: huellas de Guillén y Aleixandre en el imaginario poético-musical de Atencia (con paseos literarios, ecos de Caracola y coda cernudiana) 83 Fernanda Pavié Santana Espacio, memoria y resiliencia en Ruido de Álvaro Bisama (2012) 107 Domenico Coppola Dritte Räume und Widerspenstigkeit der Natur: eine Studie zu den Wechselwirkungen zwischen Mensch und Raum in Robert Seethalers Roman Ein ganzes Leben 131 Lia Pacini Between Fancy and Reality: The Crossing of Borders in Poe’s “Ligeia” 151 Marta Colleoni Debussy, l’étoffe d’un vrai poète ? La synthèse poétique-musicale des Proses lyriques 173 Andrea Cornaggia Monstres d’inépuisable beauté. L’effondrement des limites du corps grotesque chez Alfred Jarry
description: book reviews 195 Serenella Zanotti, James Joyce, English Teacher. Archival Explorations into Language Teaching in Early Twentieth-Century Europe, Rome: Bulzoni Editore, 2020, 204 pp. (Reviewed by Polina Shvanyukova, Università degli Studi di Udine) 199 Steven Swarbrick, The Environmental Unconscious. Ecological Poetics from Spenser to Milton. Minneapolis: University of Minnesota Press, 2023, pp. 336. (Reviewed by Stefano Rozzoni, Università degli Studi di Bergamo) 205 Marta Palenque y Ángela Rico Cerezo (eds.), Las colecciones El Cuento Nuevo (1918-1919 y 1934-1935), Ediciones Ulises, Consejo Superior de Investigaciones Científicas, colección Literatura Breve, Sevilla-Madrid, 2022. (Revisado por Juan Molina Porras, Sociedad Menéndez Pelayo) 211 Pedro J. Plaza, Matriz Granada: Valparaíso Ediciones, 2023, 112 pp. (Reseñado por Erica Lacanna, Università di Genova) 215 Isaac Rosa, Lugar seguro. Barcelona: Seix Barral, 2022, 309 pp. (Revisado por Rosa María Jiménez Padilla, Università degli Studi di Bergamo) 219 Toni Montesinos, Ojos llenos de alegría. Estar vivo con R.W. Emerson Barcelona: Editorial Ariel, 2023, 592 pp. (Reseñado por José de María Romero Barea, escritor, traductor, periodista cultural y profesor) 223 José María Saussol, Por el sendero. Almería: Círculo Rojo, 2022, 376 pp. (Revisado por Fernanda Pavié Santana, Università degli Studi di Bergamo)
Analyzing photographs in archival terms
Creators: name: Barr, Debra Elaine
Publisher: name: University of British Columbia
Year: 2010

description: Through a comparison of the literature produced by general archival theorists with that published by photographic archivists, it becomes clear that archival principles are not routinely applied to records in photographic form. Since reflecting knowledge about records creators and circumstances of creation is a basic archival responsibility, this thesis will begin with a discussion of a variety of past and present purposes of photographers in general. The ways in which both purposes and methods can influence photographic information will also be studied. The obligation of photographic archivists to examine records and creators in terms of administrative (including legal), scholarly and other user values will then be examined. The thesis will conclude with a survey of the literature produced by North American photographic archivists to determine whether their responsibilities are fully recognized.
Paul Johansen, Balthasar Rüssow als Humanist und Geschichtsschreiber. Aus dem Nachlaß ergänzt und hrsg. von Heinz von zur Mühlen
Creators: name: Jähnig, Bernhart
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 4 (1998)
Growing neutrinos and cosmological selection
Creators: name: Wetterich, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The time evolution of a cosmological scalar field can be stopped by an increasing mass of the neutrinos. This leads to a transition from a cosmological scaling solution with dynamical dark energy at early time to a cosmological constant dominated universe at late time. The trigger for the transition is set at the time when the neutrinos become non-relativistic. The characteristic mass scale for dark energy is thus related to the neutrino mass, the only known particle physics scale in its vicinity. This explains the ``why now problem'' for dark energy. We present a particle physics realization of this ``growing matter'' scenario. It is based on the very slowly varying mass of a superheavy scalar triplet field whose expectation value dominates the light neutrino masses.
description: new material on time varying constants, new figures, 8 pages, 4 figures
Sowjetisierung und Eigenständigkeit in der SBZ/DDR (1945-1953)
Creators: name: Moldenhauer, Harald
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2000

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 49 Nr. 3 (2000)
Hamilton-Jacobi Counterterms for Einstein-Gauss-Bonnet Gravity
Creators: name: Liu, James T.
name: Sabra, Wafic A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The on-shell gravitational action and the boundary stress tensor are essential ingredients in the study of black hole thermodynamics. We employ the Hamilton-Jacobi method to calculate the boundary counterterms necessary to remove the divergences and allow the study of the thermodynamics of Einstein-Gauss-Bonnet black holes.
description: 21 pages, LaTeX
Pavel Himl, Die 'armben Leüte' und die Macht. Die Untertanen der südböhmischen Herrschaft eský Krumlov/Krumau im Spannungsfeld zwischen Gemeinde, Obrigkeit und Kirche (1680-1781)
Creators: name: Cerman, Markus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 2 (2004)
Wino-Higgsino dark matter in the MSSM from the $g-2$ anomaly
Creators: name: Iwamoto, Sho
name: Yanagida, Tsutomu T.
name: Yokozaki, Norimi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this letter, we show that the wino-Higgsino dark matter (DM) is detectable in near future DM direct detection experiments for almost all consistent parameter space in the spontaneously broken supergravity (SUGRA) if the muon g-2 anomaly is explained by the wino-Higgsino loop diagrams. We also point out that the present and future LHC experiments can exclude or confirm this SUGRA explanation of the observed muon g-2 anomaly.
description: Figures and benchmark point for tanb=40 added, typos corrected
The eclipsing LMC star OGLE05155332--6925581: a clue for Double Periodic Variables
Creators: name: Mennickent, R. E.
name: Kolaczkowski, Z.
name: Michalska, G.
name: Pietrzy'nski, G.
name: Gallardo, R.
name: Cidale, L.
name: Granada, A.
name: Gieren, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the nature of OGLE05155332-6925581, one of the brightest members of the enigmatic group of Double Periodic Variables (DPVs) recently found in the Magellanic Clouds. The modeling of archival orbital light curves (LCs), along with the analysis of the radial velocities suggest that this object is a semi--detached binary with the less massive star transferring matter to the more massive and less evolved star, in an Algol--like configuration. We find evidence for additional orbital variability and H$α$ emission, likely caused by an accretion disc around the primary star. As in the case of $βLyr$ the circumprimary disc seems to be more luminous than the primary, but we do not detect orbital period changes. We find that the LC follows a loop in the color--magnitude diagram during the long cycle; the system is redder when brighter and the rising phase is bluer than during decline. Infrared excess is also present. The source of the long--term periodicity is not eclipsed, indicating its circumbinary origin. Strong asymmetries, discrete absorption components (DACs) and a $γ$ shift are new and essential observational properties in the infrared H I lines. The DACs strength and RV follow a saw--teeth pattern during the orbital cycle. We suggest that the system experiences supercycles of mass outflow feeding a circumbinary disc. Mass exchange and mass loss could produce comparable but opposite effects in the orbital period on a long time scale, resulting in a quasi--constancy of this parameter.
description: submitted to MNRAS
10D Super-Yang-Mills Scattering Amplitudes From Its Pure Spinor Action
Creators: name: Ben-Shahar, Maor
name: Guillen, Max
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the pure spinor master action for 10D super-Yang-Mills in the gauge $b_{0}V = QΞ$, tree-level scattering amplitudes are calculated through the perturbiner method, and shown to match those obtained from pure spinor CFT techniques. We find kinematic numerators made of nested $b$-ghost operators, and show that the Siegel gauge condition $b_{0}V = 0$ gives rise to color-kinematics duality satisfying numerators whose Jacobi identity follows from the Jacobi identity of a kinematic algebra.
description: 36 pages
แนวทางการเสริมสร้างคุณลักษณะบัณฑิตไทยในการก้าวสู่ประชาคมอาเซียน
Creators: name: ไสว ฟักขาว
Publisher: name: บริษัท เค พี จำกัด
Year: 2556
Subjects: คุณลักษณะบัณฑิตไทย,ประชาคมอาเซียน,Thai graduate attributes , ASEAN community

description: 1, 8, วารสารบัณฑิตวิทยาลัย มหาวิทยาลัยราชภัฏจันทรเกษม
Transitions in the ergodicity of subrecoil-laser-cooled gases
Creators: name: Barkai, Eli
name: Radons, Günter
name: Akimoto, Takuma
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: With subrecoil-laser-cooled atoms one may reach nano-Kelvin temperatures while the ergodic properties of these systems do not follow usual statistical laws. Instead, due to an ingenious trapping mechanism in momentum space, power-law-distributed sojourn times are found for the cooled particles. Here, we show how this gives rise to a statistical-mechanical framework based on infinite ergodic theory, which replaces ordinary ergodic statistical physics of a thermal gas of atoms. In particular, the energy of the system exhibits a sharp discontinuous transition in its ergodic properties. Physically this is controlled by the fluorescence rate, but more profoundly it is a manifestation of a transition for any observable, from being an integrable to becoming a non-integrable observable, with respect to the infinite (non-normalised) invariant density.
description: 5 pages, 1 figure, 4 pages of supplementary material
Quellen zur südwestdeutschen Geschichte in Archiven der Tschechischen Republik
Creators: name: Bahlcke, Joachim
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 3 (1998)