cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rheology of Attractive Emulsions
Creators: name: Datta, Sujit S.
name: Gerrard, Dustin D.
name: Rhodes, Travers S.
name: Mason, Thomas G.
name: Weitz, David A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We show how attractive interactions dramatically influence emulsion rheology. Unlike the repulsive case, attractive emulsions below random close packing, RCP, can form soft gel-like elastic solids. However, above RCP, attractive and repulsive emulsions have similar elasticities. Such compressed attractive emulsions undergo an additional shear-driven relaxation process during yielding. Our results suggest that attractive emulsions begin to yield at weak points through the breakage of bonds, and, above RCP, also undergo droplet configurational rearrangements.
Parameter constraints for accreting millisecond pulsars with synthetic NICER data
Creators: name: Dorsman, Bas
name: Salmi, Tuomo
name: Watts, Anna L.
name: Ng, Mason
name: Kamath, Satish
name: Bobrikova, Anna
name: Poutanen, Juri
name: Loktev, Vladislav
name: Kini, Yves
name: Choudhury, Devarshi
name: Vinciguerra, Serena
name: Bogdanov, Slavko
name: Chakrabarty, Deepto
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulse profile modelling (PPM) is a technique for inferring mass, radius and hotspot properties of millisecond pulsars. PPM is now regularly used for analysis of rotation-powered millisecond pulsars (RMPs) with data from the Neutron Star Interior Composition ExploreR (NICER). Extending PPM to accreting millisecond pulsars (AMPs) is attractive, because they are a different source class featuring bright X-ray radiation from hotspots powered by accretion. In this paper, we present a modification of one of the PPM codes, X-PSI, so that it can be used for AMPs. In particular, we implement a model of an accretion disc and atmosphere model appropriate for the hotspots of AMPs, and improve the overall computational efficiency. We then test parameter recovery with synthetic NICER data in two scenarios with reasonable parameters for AMPs. We find in the first scenario, where the hotspot is large, that we are able to tightly and accurately constrain all parameters including mass and radius. In the second scenario, which is a high inclination system with a smaller hotspot, we find degeneracy between a subset of model parameters and a slight bias in the inferred mass and radius. This analysis of synthetic data lays the ground work for future analysis of AMPs with NICER data. Such an analysis could be complemented by future (joint) analysis of polarization data from the Imaging X-ray Polarimetry Explorer (IXPE).
description: 16 pages, 6 figures, 3 tables. Published in MNRAS
Symmetrical Dispersion Compensation For High Speed Optical Links
Creators: name: Arora, Ojuswini
name: Garg, Dr. Amit kumar
name: Punia, Savita
Publisher: name: arXiv
Year: 2011
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations for the symmetrical system i.e Pre-compensation & Post-compensation. The dispersion compensating fiber (DCF) is tested for a single span, single channel system operating at a speed of 10 Gb/s with a transmitting wavelength of 1550 nm, over 120 km single mode fibre by using the compensating fiber for 24 km,30km and 35Km. So far, most of the investigations for single mode fiber (SMF) transmission at high amplifier spacings in the order of 90 km to 120 km is focused on conventional Non Return to Zero(NRZ) format. The simulation results are validated by analysing the Q-factor and Bit error rate (BER) in the numerical simulator OptSim.
description: 6 pages, 6 figures, IJCSI journal
Titel Heft 1-2
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 13 Nr. 1-2 (1938): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Inhalt Heft 1-2
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 13 Nr. 1-2 (1938): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
A symmetric Norlund sum with application to inequalities
Creators: name: da Cruz, Artur M. C. Brito
name: Martins, Natalia
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Properties of an $α,β$-symmetric Norlund sum are studied. Inspired in the work by Agarwal et al., $α,β$-symmetric quantum versions of Holder, Cauchy-Schwarz and Minkowski inequalities are obtained.
description: Submitted 18-Oct-2011; accepted 09-March-2012; to Proceedings of International Conference on Differential & Difference Equations and Applications, in honour of Professor Ravi P. Agarwal, to be published by Springer in the series Proceedings in Mathematics (PROM)
The Galactic evolution of phosphorus
Creators: name: Caffau, E.
name: Bonifacio, P.
name: Faraggiana, R.
name: Steffen, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: As a galaxy evolves, its chemical composition changes and the abundance ratios of different elements are powerful probes of the underlying evolutionary processes. Phosphorous is an element whose evolution has remained quite elusive until now, because it is difficult to detect in cool stars. The infrared weak P I lines of the multiplet 1, at 1050-1082 nm, are the most reliable indicators of the presence of phosphorus. The availability of CRIRES at VLT has permitted access to this wavelength range in stellar spectra.We attempt to measure the phosphorus abundance of twenty cool stars in the Galactic disk. The spectra are analysed with one-dimensional model-atmospheres computed in Local Thermodynamic Equilibrium (LTE). The line formation computations are performed assuming LTE. The ratio of phosphorus to iron behaves similarly to sulphur, increasing towards lower metallicity stars. Its ratio with respect to sulphur is roughly constant and slightly larger than solar, [P/S]=0.10+- 0.10. We succeed in taking an important step towards the understanding of the chemical evolution of phosphorus in the Galaxy. However, the observed rise in the P/Fe abundance ratio is steeper than predicted by Galactic chemical evolution model model developed by Kobayashi and collaborators. Phosphorus appears to evolve differently from the light odd-Z elements sodium and aluminium. The constant value of [P/S] with metallicity implies that P production is insensitive to the neutron excess, thus processes other than neutron captures operate. We suggest that proton captures on 30Si and alpha captures on $27Al are possibilities to investigate. We see no clear distinction between our results for stars with planets and stars without any detected planet.
description: To be published on A&A
CyVerse: Scalable Image Informatics
Creators: name: Swetnam, Tyson
name: Skidmore, Edwin
name: Edgin, Tony
name: Walls, Ramona
name: Lyons, Eric
name: Merchant, Nirav
Publisher: name: QUBES Educational Resources
Year: 2020

description: Poster on cyberinfrastructure for the machine learning ere presented at the 2020 BIOME Institute: Cultivating Scientific Curiosity
The complexity of parsec-scaled dusty tori in AGN
Creators: name: Tristram, K. R. W.
name: Schartmann, M.
name: Burtscher, L.
name: Meisenheimer, K.
name: Jaffe, W.
name: Kishimoto, M.
name: Hönig, S. F.
name: Weigelt, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Warm gas and dust surround the innermost regions of active galactic nuclei (AGN). They provide the material for accretion onto the super-massive black hole and they are held responsible for the orientation-dependent obscuration of the central engine. The AGN-heated dust distributions turn out to be very compact with sizes on scales of about a parsec in the mid-infrared. Only infrared interferometry currently provides the necessary angular resolution to directly study the physical properties of this dust. Size estimates for the dust distributions derived from interferometric observations can be used to construct a size--luminosity relation for the dust distributions. The large scatter about this relation suggests significant differences between the dust tori in the individual galaxies, even for nuclei of the same class of objects and with similar luminosities. This questions the simple picture of the same dusty doughnut in all AGN. The Circinus galaxy is the closest Seyfert 2 galaxy. Because its mid-infrared emission is well resolved interferometrically, it is a prime target for detailed studies of its nuclear dust distribution. An extensive new interferometric data set was obtained for this galaxy. It shows that the dust emission comes from a very dense, disk-like structure which is surrounded by a geometrically thick, similarly warm dust distribution as well as significant amounts of warm dust within the ionisation cone.
description: 8 pages, 3 figures, to appear in the proceedings of the conference "The central kiloparsec in Galactic Nuclei: Astronomy at High Angular Resolution 2011", open access Journal of Physics: Conference Series (JPCS), published by IOP Publishing
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for King County’s Coal Creek Trunk Maintenance Hole 25B Protection Project, King County, Washington (COE Number: NWS-2020-605-WRD, HUC: 171100120400 – Lake Washington)
titleType: Other
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2020

description: ESA Section 7 Consultation ; WCRO-2020-01678
Tafeln X-XV
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 4 Nr. 4 (1929): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Interpreting pathways to discover cancer driver genes with Moonlight
Creators: name: Colaprico, Antonio
name: Olsen, Catharina
name: Bailey, Matthew H.
name: Odom, Gabriel J.
name: Terkelsen, Thilde
name: Silva, Tiago C.
name: Olsen, André V.
name: Cantini, Laura
name: Zinovyev, Andrei
name: Barillot, Emmanuel
name: Houtan Noushmehr
name: Bertoli, Gloria
name: Castiglioni, Isabella
name: Cava, Claudia
name: Bontempi, Gianluca
name: Chen, Xi Steven
name: Papaleo, Elena
Publisher: name: F1000 Research Limited
Year: 2020

description: Cancer driver gene alterations influence cancer development, occurring in oncogenes, tumor suppressors, and dual role genes. Discovering dual role cancer genes is difficult because of their elusive context-dependent behavior. We define oncogenic mediators as genes controlling biological processes. With them, we classify cancer driver genes, unveiling their roles in cancer mechanisms. To this end, we present Moonlight, a tool that incorporates multiple -omics data to identify critical cancer driver genes. With Moonlight, we analyze 8000+ tumor samples from 18 cancer types, discovering 3310 oncogenic mediators, 151 having dual roles. By incorporating additional data (amplification, mutation, DNA methylation, chromatin accessibility), we reveal 1000+ cancer driver genes, corroborating known molecular mechanisms. Additionally, we confirm critical cancer driver genes by analysing cell-line datasets. We discover inactivation of tumor suppressors in intron regions and that tissue type and subtype indicate dual role status. These findings help explain tumor heterogeneity and could guide therapeutic decisions.
Dimming Starlight with Dark Compact Objects
Creators: name: Bramante, Joseph
name: Diamond, Melissa D.
name: Kim, J. Leo
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We demonstrate a new technique to search for dark compact objects. When dark matter comprising a dark compact object interacts with photons, the compact object can disperse light traveling though it. As these objects pass between Earth and a distant star, they act as "lampshades" that dim the star. We examine how dimming effects from clumps of dark matter in the Galaxy could be searched for in microlensing surveys, which measure the brightness of stars as a function of time. Using the EROS-2 and OGLE surveys, we show that a dimming analysis of existing data can be used to constrain dark sectors, and could be used to discover dark matter in compact objects.
description: 9 pages main text (4 figures), 4 pages appendix (4 figures). Version accepted to PRL
Effectiveness of EU-funded R&I programmes from the perspective of the European railway sector stakeholders
Creators: name: Tardivo, Alessio
Publisher: name: Zenodo
Year: 2023

description: Though significant efforts have been undertaken to improve the European railway sector, less attention has been allocated to the analysis of these activities from the stakeholders’ and users’ perspectives. This study provides the methodology for measuring the adherence of Research & Innovation actions in railways to the stakeholders’ requirements and the benefits they expect.
title: Durchsichtig für die Wirklichkeit Gottes
title: Prophetie: wacher Verstand, klarer Blick und die Freiheit des Ausdrucks
Creators: name: Müllner, Ilse
Publisher: name: Universität Kassel
Year: 2018
Subjects: subject: 230
subject: Biblische Prophetie
subject: Bibel. Altes Testament
subject: Bibelarbeit
subject: Katholische Theologie

description: Online als Archivausgabe zugänglich unter https://www.kfd-bundesverband.de/frau-und-mutter/archiv/archiv-2018-ausgabe-6-durchsichtig-fuer-die-wirklichkeit-gottes/
Inhalt des 64. Jahrgangs
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 64 (2001): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Schyle, Daniel, Der Lousberg in Aachen : Ein jungsteinzeitlicher Feuersteintagebau mit Beilklingenproduktion
Creators: name: Grooth, Marjorie E. Th.
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Schyle, Daniel, Der Lousberg in Aachen : Ein jungsteinzeitlicher Feuersteintagebau mit Beilklingenproduktion. Mainz : Zabern, 2010. 173 S., 67 Taf. + 1 Beil. - (Rheinische Ausgrabungen ; 66). ISBN 978-3-8053-4326-8
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Wampach, Camille, Geschichte der Grundherrschaft Echternach im Frühmittelalter 1,1
Creators: name: Kentenich, Gottfried
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Rezension zu: Wampach, Camille, Geschichte der Grundherrschaft Echternach im Frühmittelalter 1,1. Luxemburg, 1929
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 4 Nr. 2 (1929): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Exact solutions of (n + 1)-dimensional Yang-Mills equations in curved space-time
Creators: name: Sanchez-Monroy, J. A.
name: Quimbay, C. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of a semiclassical approach where vectorial gauge fields can be considered as classical fields, we obtain exact static solutions of the SU(N) Yang-Mills equations in a $(n+1)$ dimensional curved space-time, for the cases $n = 1, 2, 3$. As an application of the results obtained for the case $n=3$, we consider the solutions for the anti-de Sitter and Schwarzschild metrics. We show that these solutions have a confining behavior and can be considered as a first step in the study of the corrections of the spectra of quarkonia in a curved background. Since the solutions that we find in this work are valid also for the group U(1), the case $n=2$ is a description of the $(2+1)$ electrodynamics in presence of a point charge. For this case, the solution has a confining behavior and can be considered as an application of the planar electrodynamics in a curved space-time. Finally we find that the solution for the case $n=1$ is invariant under a parity transformation and has the form of a linear confining solution.
description: 14 pages
Das erste Wagenbegräbnis der frühen Eisenzeit in der Eifel [Hillesheim]
Creators: name: Steiner, Paul
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 4 Nr. 3 (1929): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Scharf, Joachim, Studien zur Bevölkerungsgeschichte der Rheinlande auf epigraphischer Grundlage
Creators: name: Koethe, Harald
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Rezension zu: Scharf, Joachim, Studien zur Bevölkerungsgeschichte der Rheinlande auf epigraphischer Grundlage. Berlin : Junker und Dünnhaupt, 1938. 174 S. - (Neue deutsche Forschungen : Abteilung Alte Geschichte ; 3)
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 13 Nr. 3 (1938): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
The influence of the jet opening angle on the appearance of relativistic jets
Creators: name: Boutelier, T.
name: Henri, G.
name: Petrucci, P. O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We reinvestigate the problem of the appearance of relativistic jets when geometrical opening is taken into account. We propose a new criterion to define apparent velocities and Doppler factors, which we think being determined by the brightest zone of the jet. We numerically compute the apparent velocity and the Doppler factor of a non homokinetic jet using different velocity profiles. We argue that if the motion is relativistic, the high superluminal velocities beta_{app} ~ gamma, expected in the case of an homokinetic jet, are only possible for geometrical collimation smaller than the relativistic beaming angle 1/gamma. This is relatively independent of the jet velocity profile. For jet collimation angles larger than 1/gamma, the apparent image of the jet will always be dominated by parts of the jet traveling directly towards the observer at lorentz factors < gamma resulting in maximal apparent velocities smaller than gamma}. Furthermore, getting rid of the homokinetic hypothesis yields a complex relation between the observing angle and the Doppler factor, resulting in important consequences for the numerical computation of AGN population and unification scheme model.
description: Accepted in MNRAS, 12 pages and 9 Figures
Zur fränkischen Landnahme und Entstehung unserer westlichen Volksgrenze
Creators: name: Petri, Franz
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 13 Nr. 3 (1938): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Wilson's 6-j laws and stitched Markov processes
Creators: name: Bryc, Wlodek
name: Matysiak, Wojciech
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J25

description: We show how to insert time into the parameters of the Wilson's 6-j laws to construct discrete Markov chains with these laws. By a quadratic transformation we convert them into Markov processes with linear regressions and quadratic conditional variances. Further conversion into the "standard form" gives "quadratic harnesses" with "classical" value of parameter gamma. A random-parameter-representation of the original Markov chain allows us to stitch together two copies of the process, extending time domain of the quadratic harness from (0,1) to all t>0.
description: 28 pages, 1 figure
Eastern European transition economies and their trade preferences
Creators: name: Irsa, Dora
Publisher: name: University of Calgary
Year: 2003

description: Bibliography: p. 96-99
description: Seven eastern European countries - the Czech Republic, Hungary, Poland, Slovenia, Slovakia, Bulgaria and Latvia - examined in this paper have a common goal - to gain acceptance into the European Union. This paper examines individual trade policy preferences across the seven post-communist transition economies, focusing on skilled versus unskilled workers' trade preferences. The paper also explores the effects of nationalism on trade preferences, as well as the relationship between individual trade preferences and variables describing personal status other than skill level, such as sex, age, marital status, citizenship and union membership. In addition, this paper investigates the pros and cons of the EU expansion, as well as people's views on the expansion. The empirical results in this paper indicate that skilled labour is less supportive of trade protection and more supportive of trade liberalization than unskilled labour.
Constraints on dark energy and modified gravity from the BOSS Full-Shape and DESI BAO data
Creators: name: Taule, Petter
name: Marinucci, Marco
name: Biselli, Giorgia
name: Pietroni, Massimo
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We constrain dark energy and modified gravity within the effective field theory of dark energy framework using the full-shape BOSS galaxy power spectrum, combined with Planck cosmic microwave background (CMB) data and recent baryon acoustic oscillations (BAO) measurements from DESI. Specifically, we focus on a varying braiding parameter $α_{\rm B}$, a running of the ``effective'' Planck mass $α_{\rm M}$, and a constant dark energy equation of state $w$. The analysis is performed with two of these parameters at a time, including all the other standard cosmological parameters and marginalizing over bias and nuisance parameters. The full-shape galaxy power spectrum is modeled using the effective field theory of large-scale structure up to 1-loop order in perturbation theory. We find that the CMB data is most sensitive to $α_{\rm B}$, and that adding large-scale structure information only slightly changes the parameter constraints. However, the large-scale structure data significantly improve the bounds on $α_{\rm M}$ and $w$ by a factor of two. This improvement is driven by background information contained in the BAO, which breaks the degeneracy with $H_0$ in the CMB. We confirm this by comparing the BOSS full-shape information with BOSS BAO, finding no significant differences. This is likely to change with future high-precision full-shape data from Euclid and DESI however, to which the pipeline developed here is immediately applicable.
description: 32 pages, 9 figures, matches published version in JCAP
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 9 Nr. 8 (1956): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Microscopic origins of the anomalous melting behaviour of high-pressure sodium
Creators: name: Eshet, Hagai
name: Khaliullin, Rustam Z.
name: Kühne, Thomas D.
name: Behler, Jörg
name: Parrinello, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recent experiments have shown that sodium, a prototype simple metal at ambient conditions, exhibits unexpected complexity under high pressure. One of the most puzzling phenomena in the behaviour of dense sodium is the pressure-induced drop in its melting temperature, which extends from 1000 K at ~30GPa to as low as room temperature at ~120GPa. Despite significant theoretical effort to understand the anomalous melting its origins have remained unclear. In this work, we reconstruct the sodium phase diagram using an ab-initio-quality neural-network potential. We demonstrate that the reentrant behaviour results from the screening of interionic interactions by conduction electrons, which at high pressure induces a softening in the short-range repulsion. It is expected that such an effect plays an important role in governing the behaviour of a wide range of metals and alloys.
description: 5 pages, 4 figures, 30 references, supplementary information
Detection of accretion X-rays from QS Vir: cataclysmic or a lot of hot air?
Creators: name: Matranga, Marco
name: Drake, Jeremy J.
name: Kashyap, Vinay
name: Steeghs, Danny
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: An XMM-Newton observation of the nearby "pre-cataclysmic" short-period (P_orb = 3.62 hr) binary QS Vir (EC 13471-1258) revealed regular narrow X-ray eclipses when the white dwarf passed behind its M2-4 dwarf companion. The X-ray emission provides a clear signature of mass transfer and accretion onto the white dwarf. The low-resolution XMM-Newton EPIC spectra are consistent with a cooling flow model and indicate an accretion rate of Mdot= 1.7\times10^-13M\odot/yr. At 48 pc distant, QS Vir is then the second nearest accreting cataclysmic variable known, with one of the lowest accretion rates found to date for a non-magnetic system. To feed this accretion through a wind would require a wind mass loss rate of Mdot ~ 2 \times 10^-12M\odot/yr if the accretion efficiency is of the order of 10%. Consideration of likely mass loss rates for M dwarfs suggests this is improbably high and pure wind accretion unlikely. A lack of accretion disk signatures also presents some difficulties for direct Roche lobe overflow. We speculate that QS Vir is on the verge of Roche lobe overflow, and that the observed mass transfer could be supplemented by upward chromospheric flows on the M dwarf, analogous to spicules and mottles on the Sun, that escape the Roche surface to be subsequently swept up into the white dwarf Roche lobe. If so, QS Vir would be in a rare evolutionary phase lasting only a million years. The X-ray luminosity of the M dwarf estimated during primary eclipse is L_X = 3 \times 10^28 erg/s, which is consistent with that of rapidly rotating "saturated" K and M dwarfs.
description: ApJ in press
Seeking solutions to deforestation: a study of sacred groves in Ghana's Bolgatanga District
Creators: name: Yembilah, Rita Da-Oni-Ma
Publisher: name: University of Calgary
Year: 2003

description: Bibliography: p. 159-167
description: The objectives of this study "were to document the rules (taboos) of some sacred groves and examine the feasibility of harnessing them for vegetation conservation. The perspectives of the local people on deforestation and reforestation" were also examined It was found that even though the respondents recognized the environmental deterioration, they "were not concerned about it. They believed that trees would always persist in spite of rampant burning and cutting for various ptnp)S€S. Out of the interview; came 14 taboos that helped keep minimal human interference in the sacred groves. Of these, 6 dealt directly "With the trees. Respondents "were split on borrowing from the groves for forestry ptnp)S€S but those in favour were in a slight majority. The study found 4 potential ways in which ideas from the groves could increase the success of reforestation programmes. It is recommended that conservationists examine these critically for possible integration in forestry activities alongside the conventional methods of forest protection.
Stripes and Pairing in High Temperature Superconductors
Creators: name: Oleś, Andrzej M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We review briefly several approaches used to investigate the stability of stripe phases in high temperature superconductors, where charge inhomogeneities arise from competing kinetic and magnetic energies. The mechanism of stripe formation, their consequences for the normal state and enhancement of pairing interaction triggered by charge inhomogeneities are briefly summarized. Finally, we demonstrate that orbital degeneracy ($i$) leads to a more subtle mechanism of stripe formation, and ($ii$) plays an important role and determines the symmetry of the superconducting state in pnictides.
description: 7 pages, no figures
Ground State Phase Diagram of $\text{SU}(3)$ $t$-$J$ Chain
Creators: name: Zhang, Junhao
name: Hou, Jie
name: Lou, Jie
name: Chen, Yan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Distinct from the $\text{SU}(2)$ case, the fermionic systems with $\text{SU}(N)$ symmetry are expected to exhibit novel physics, such as exotic singlet formation. Using the density matrix renormalization group technique, we obtain the ground state phase diagram of the $\text{SU}(3)$ $t$-$J$ chain for density $n<1$. The ground state phase diagram includes the Luttinger liquid, the extended Luther-Emery liquid characterized by a spin gap, and the phase separation state. We quantitatively assess the characteristics of the three phases by measuring spin gap, compressibility, various correlation functions and structure factors. We further study the extended Luther-Emery liquid phase and discover molecular superfluid quasi-long-range order. The mechanism of the molecular superfluid is the combination of three $\text{SU}(3)$ fermions on sites that are not completely connected. Accordingly, we can speculate the behavior of the $\text{SU}(N)$ $t$-$J$ chain model with larger $N$ values, operating within the same filling regime.
description: 8 pages, 8 figures
Frühmittelalterliche Kunst. Neue Beiträge zur Kunst des ersten Jahrtausends n. Chr.
Creators: name: Bogyay, Thomas Von
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Frühmittelalterliche Kunst. Neue Beiträge zur Kunst des ersten Jahrtausends n. Chr. (Forschungen zur Kunstgeschichte und Christlichen Archäologie, I. Band, 2. Halbband). Baden-Baden 1954, Verlag für Kunst und Wissenschaft, 308 S., 118 Abb.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 9 Nr. 2 (1956): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Impact of past behaviour normality: meta-analysis of exceptionality effect
Creators: name: Fillon, Adrien
name: Kutscher, Lucas
name: Feldman, Gilad
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Exceptionality effect is the phenomenon that people associate stronger negative affect with a negative outcome when it is a result of an exception (abnormal behaviour) compared to when it is a result of routine (normal behaviour). In this pre-registered meta-analysis, we examined exceptionality effect in 48 studies (N = 4212). An analysis of 35 experimental studies (n = 3332) showed medium to strong effect (g = 0.60, 95% confidence intervals (CI) [0.41, 0.79]) for past behaviour across several measures (regret/affect: g = 0.66, counterfactual thought: g = 0.39, self-blame: g = 0.44, victim compensation: g = 0.39, offender punishment: g = 0.51). An analysis of 13 one-sample studies presenting a comparison of exceptional and routine behaviours simultaneously (n = 1217) revealed a very strong exceptionality effect (converted g = 1.98, CI [1.57, 2.38]). We tested several theoretical moderators: norm strength, event controllability, outcome rarity, action versus inaction, and status quo. We found that exceptionality effect was stronger when the routine was aligned with the status quo option and with action rather than for inaction. All materials are available on: https://osf.io/542c7/
Associations between hypomania proneness and attentional bias to happy, but not angry or fearful, faces in emerging adults
Creators: name: Gruber, June
name: Maclaine, Ellen
name: Avard, Eleni
name: Purcell, John
name: Cooper, Gaia
name: Tobias, Margaret
name: Earls, Holly
name: Wieland, Lara
name: Bothe, Ellen
name: Boggio, Paulo
name: Palermo, Romina
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Mania, the core feature of bipolar disorder, is associated with heightened and positive emotion responding. Yet, little is known about the underlying cognitive processes that may contribute to heightened positive emotionality observed. Additionally, while previous research has investigated positive emotion biases in non-clinical samples, few if any, account for subthreshold clinical symptoms or traits, which have reliably assessed psychopathological risk. The present study compared continuous scores on a widely used self-report measure of hypomania proneness (HPS-48) with a dot-probe task to investigate attentional biases for happy, angry, fearful, and neutral faces among 66 college student participants. Results suggested that hypomania proneness was positively associated with attentional bias towards happy, but not angry or fearful faces. Results remained robust when controlling for positive affect and did not appear to be affected by negative affect or current symptoms of depression, anxiety, and stress. Findings provide insight into potential behavioural markers that co-occur with heightened positive emotional responding and hypomania in emerging adults.
Hunting for Dynamical Supersymmetry Breaking in Theories That S-confine
Creators: name: Lin, Tongyan
name: Mason, John D.
name: Sajjad, Aqil
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The s-confining theories are a class of supersymmetric gauge theories with infrared dynamics which are well-understood. Perturbing such theories can give rise to dynamical supersymmetry breaking. We realize simple models of dynamical supersymmetry breaking by perturbing two of the 10 SU(N) s-confining gauge theories by a single trilinear operator. These examples have locally stable vacua with spontaneous supersymmetry breaking. The first is SU(5) with two generations (consisting of an antisymmetric tensor and an antifundamental) plus two flavors. The second is SU(5) with three generations. The properties of the former vacuum are calculable while those of the latter vacuum are not. We briefly discuss the other SU(N) models.
description: 21 pages, 1 figure
The X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy ESO 113-G010
Creators: name: Mehdipour, Missagh
name: Branduardi-Raymont, Graziella
name: Page, Mathew J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the first analysis of the X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy ESO 113-G010. We used archival data from a 100 ks XMM-Newton observation made in 2005. From high resolution spectroscopy analysis of the RGS data, we detect absorption lines originating from a warm absorber consisting of two distinct phases of ionisation, with log xi ~ 3.2 and 2.3 respectively. The higher-ionised component has a larger column density and outflow velocity (N_H ~ 1.6 x 10^22 cm^-2, v ~ -1100 km/s) than the lower-ionised component (N_H ~ 0.5 x 10^22 cm^-2, v ~ -700 km/s). The shape of the optical-UV continuum and the large Balmer decrement (H_alpha/H_beta ~ 8) indicate significant amount of reddening is taking place in our line of sight in the host galaxy of the AGN; however, the X-ray spectrum is not absorbed by cold neutral gas intrinsic to the source. We discuss different explanations for this discrepancy between the reddening and the X-ray absorption, and suggest that the most likely solution is a dusty warm absorber. We show that dust can exist in the lower-ionised phase of the warm absorber, which causes the observed reddening of the optical-UV emission, whereas the X-rays remain unabsorbed due to lack of cold neutral gas in the ionised warm absorber. Furthermore, we have investigated the uncertainties in the construction of the Spectral Energy Distribution (SED) of this object due to obscuration of the nuclear source and the effects this has on the photoionisation modelling of the warm absorber. We show how the assumed SEDs influence the thermal stability of each phase and whether or not the two absorber phases in ESO 113-G010 can co-exist in pressure equilibrium.
description: 11 pages, 5 figures, accepted for publication in Astronomy and Astrophysics
Mental transportation mediates nostalgia’s psychological benefits
Creators: name: Evans, Nicholas D.
name: Reyes, Joseph
name: Wildschut, Tim
name: Sedikides, Constantine
name: Fetterman, Adam K.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Nostalgizing confers social, existential, and self-oriented psychological benefits or functions. But how does the experience of nostalgia conduce to these functions? We propose that it does so, in part, through mental transportation, which involves mentally leaving one’s current space and transporting oneself into a past event. We addressed the role of mental transportation in one daily diary study and two experiments (N = 514). By assessing daily experiences of nostalgia in Study 1, we found that, on days in which participants felt more nostalgic, they were more likely to experience mental transportation. Following a narrative induction of nostalgia, we assessed mental transportation (Studies 2 and 3) and the three putative nostalgia functions: social, existential, self-oriented (Study 3). Nostalgic (vs. control) participants reported greater mental transportation (Studies 2 and 3), which in turn was associated with stronger functions (Study 3). The findings portray mental transportation as a key mechanism underlying the psychological benefits of nostalgia.
Exawatt-Zettawatt Pulse Generation and Applications
Creators: name: Mourou, G. A.
name: Fisch, N. J.
name: Malkin, V. M.
name: Toroker, Z.
name: Khazanov, E. A.
name: Sergeev, A. M.
name: Tajima, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new amplification method, weaving the three basic compression techniques, Chirped Pulse Amplification (CPA), Optical Parametric Chirped Pulse Amplification (OPCPA) and Plasma Compression by Backward Raman Amplification (BRA) in plasma, is proposed. It is called C3 for Cascaded Conversion Compression. It has the capability to compress with good efficiency kilojoule to megajoule, nanosecond laser pulses into femtosecond pulses, to produce exawatt and beyond peak power. In the future, C3 could be used at large-scale facilities such as the National Ignition Facility (NIF) or the Laser Megajoule (LMJ) and open the way to zettawatt level pulses. The beam will be focused to a wavelength spot size with a f#1. The very small beam size, i.e. few centimeters, along with the low laser repetition rate laser system will make possible the use of inexpensive, precision, disposable optics. The resulting intensity will approach the Schwinger value, thus opening up new possibilities in fundamental physics.
description: 13 pages, 4 figures
Correlation Functions and the Boundary qKZ Equation in a Fractured XXZ Chain
Creators: name: Weston, Robert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 82B23

description: We consider correlation functions of the form ', where |vac> is the vacuum eigenstate of an infinite antiferromagnetic XXZ chain, |vac>' is the vacuum eigenstate of an infinite XXZ chain which is split in two, and O is a local operator. The Hamiltonian of the split chain has no coupling between sites 1 and 0 and has a staggered magnetic field at these two sites; it arises from a tensor product of left and right boundary transfer matrices. We find a simple, exact expression for ' and an exact integral expression for general ' using the vertex operator approach. We compute the integral when O=σ^z_1 and find a conjectural expression that is analogous to the known formula for the XXZ spontaneous magnetisation and reduces to it when the magnetic field is zero. We show that correlation functions obey a boundary qKZ equation of a different level to the infinite XXZ chain with one boundary.
description: 28 pages, 12 figures
Hartwig Beseler und Hans Roggenkamp, Die Michaelskirche in Hildesheim
Creators: name: Thümmler, Hans
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Hartwig Beseler und Hans Roggenkamp, Die Michaelskirche in Hildesheim. Berlin 1954, Gebr. Mann. 4° 181 S., 6 T. und 50 Abb. im Text, 40 Kunstdrucktafeln. DM 50.-.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 9 Nr. 9 (1956): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Nochmals Bomarzo oder: Zur Kunst der Geschlechtsumwandlung
Creators: name: Bredekamp, Horst
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 41 Nr. 2 (1988): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Dimensional reduction of the CPT-even electromagnetic sector of the Standard Model Extension
Creators: name: Casana, Rodolfo
name: Carvalho, Eduardo S.
name: Ferreira, Manoel M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The CPT-even abelian gauge sector of the Standard Model Extension is represented by the Maxwell term supplemented by $(K_{F})_{μνρσ}F^{μν}F^{ρσ}$, where the Lorentz-violating background tensor, $(K_{F})_{μνρσ}$, possesses the symmetries of the Riemann tensor. In the present work, we examine the planar version of this theory, obtained by means of a typical dimensional reduction procedure to $(1+2)$ dimensions. The resulting planar electrodynamics is composed of a gauge sector containing six Lorentz-violating coefficients, a scalar field endowed with a noncanonical kinetic term, and a coupling term that links the scalar and gauge sectors. The dispersion relation is exactly determined, revealing that the six parameters related to the pure electromagnetic sector do not yield birefringence at any order. In this model, the birefringence may appear only as a second order effect associated with the coupling tensor linking the gauge and scalar sectors.The equations of motion are written and solved in the stationary regime. The Lorentz-violating parameters do not alter the asymptotic behavior of the fields but induce an angular dependence not observed in the Maxwell planar theory.
description: 13 pages, revtex style, no figures, to appear in Physical Review D(2011)
Mit Hebel und Gewinde gegen Zahnschmerzen
Creators: name: Brenker, Fabian
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2020

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 64 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Warm-Logamediate inflationary universe model
Creators: name: Herrera, Ramon
name: Olivares, Marco
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Warm inflationary universe models in the context of logamediate expansion are studied. General conditions required for these models to be realizable and discussed. This study is done in the weak and strong dissipative regimes. The parameters of our models are constrained from the observational data.
description: 16 pages, 2 figures. Accepted for publication in IJMPD. arXiv admin note: text overlap with arXiv:1108.1371