cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spontaneous parity and charge-conjugation violations at real isospin and imaginary baryon chemical potentials
Creators: name: Kouno, Hiroaki
name: Kishikawa, Mizuho
name: Sasaki, Takahiro
name: Sakai, Yuji
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The phase structure of two-flavor QCD is investigated at real isospin and imaginary quark chemical potentials by using the Polyakov-loop extended Nambu--Jona-Lasinio model. In the region, parity symmetry is spontaneously broken by the pion superfluidity phase transition, whereas charge-conjugation symmetry is spontaneously violated by the Roberge-Weiss transition. The chiral (deconfinement) crossover at zero isospin and quark chemical potentials is a remnant of the parity (charge-conjugation) violation. The interplay between the parity and charge-conjugation violations are analyzed, and it is investigated how the interplay is related to the correlation between the chiral and deconfinement crossovers at zero isospin and quark chemical potentials.
description: 12 pages, 18 figures. Typos were revised. Symbols /P and /C were added in Figures 8a and 8b. Colors of the figures were changed. Some sentences were added and revised
JIMWLK evolution in the Gaussian approximation
Creators: name: Iancu, E.
name: Triantafyllopoulos, D. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that the Balitsky-JIMWLK equations describing the high-energy evolution of the n-point functions of the Wilson lines (the QCD scattering amplitudes in the eikonal approximation) admit a controlled mean field approximation of the Gaussian type, for any value of the number of colors Nc. This approximation is strictly correct in the weak scattering regime at relatively large transverse momenta, where it reproduces the BFKL dynamics, and in the strong scattering regime deeply at saturation, where it properly describes the evolution of the scattering amplitudes towards the respective black disk limits. The approximation scheme is fully specified by giving the 2-point function (the S-matrix for a color dipole), which in turn can be related to the solution to the Balitsky-Kovchegov equation, including at finite Nc. Any higher n-point function with n greater than or equal to 4 can be computed in terms of the dipole S-matrix by solving a closed system of evolution equations (a simplified version of the respective Balitsky-JIMWLK equations) which are local in the transverse coordinates. For simple configurations of the projectile in the transverse plane, our new results for the 4-point and the 6-point functions coincide with the high-energy extrapolations of the respective results in the McLerran-Venugopalan model. One cornerstone of our construction is a symmetry property of the JIMWLK evolution, that we notice here for the first time: the fact that, with increasing energy, a hadron is expanding its longitudinal support symmetrically around the light-cone. This corresponds to invariance under time reversal for the scattering amplitudes.
description: v2: 45 pages, 4 figures, various corrections, section 4.4 updated, to appear in JHEP
Two solar-mass compact stars: structure, composition, and cooling
Creators: name: Sedrakian, Armen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: I discuss the structure and composition of massive (two solar-mass) neutron stars containing hypernuclear and deconfined quark matter in color superconducting states. Stable configurations featuring such matter are obtained if the equation of state of hadronic matter is stiff above the saturation density, the transition to quark matter takes place at a few times the nuclear saturation density, and the repulsive vector interactions in quark matter are substantial. I also discuss our recent progress in understanding the cooling of massive compact stars with color superconducting quark cores.
description: 10 pages, 3 figures. v2: minor corrections. Lecture presented at "Three Days on Quarkyonic Island", HIC for FAIR workshop and XXVIII Max Born Symposium, Wroc{\l}aw, 19-21 May 2011; v3: final version to appear in Acta Phys. Pol. B
Automorphisms and quotients of quaternionic fake quadrics
Creators: name: Dzambic, Amir
name: Roulleau, Xavier
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J29, 14G35, 11F06, 14J50

description: A fake quadric is a smooth minimal surface of general type with the same invariants as the quadric in P^3, i.e. K^2=2c_2=8 and q=p_g=0. We study here quaternionic fake quadrics i.e. fake quadrics constructed arithmetically by using some quaternion algebras over real number fields. We provide examples of quaternionic fake quadrics X with a non-trivial automorphism group and compute the invariants of the minimal desingularisation of the quotient of X by this group. In that way we obtain minimal surfaces of general type Z with q=p_g=0 and K^2=4,2 which contain the maximal number of disjoint nodal curves. We then prove that if a surface of general type has the same invariant as Z and same number of nodal curves, we can construct geometrically a surface of general type with K^2=2c_2=8.
description: 22 pages, acknowledgements completed
title: C. W. Hennings
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: C. W. Hennings as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Generalized squeezed-coherent states of the finite one-dimensional oscillator and matrix multi-orthogonality
Creators: name: Genest, Vincent X.
name: Vinet, Luc
name: Zhedanov, Alexei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A set of generalized squeezed-coherent states for the finite u(2) oscillator is obtained. These states are given as linear combinations of the mode eigenstates with amplitudes determined by matrix elements of exponentials in the su(2) generators. These matrix elements are given in the (N+1)-dimensional basis of the finite oscillator eigenstates and are seen to involve 3x3 matrix multi-orthogonal polynomials Q_n(k) in a discrete variable k which have the Krawtchouk and vector-orthogonal polynomials as their building blocks. The algebraic setting allows for the characterization of these polynomials and the computation of mean values in the squeezed-coherent states. In the limit where N goes to infinity and the discrete oscillator approaches the standard harmonic oscillator, the polynomials tend to 2x2 matrix orthogonal polynomials and the squeezed-coherent states tend to those of the standard oscillator.
description: 18 pages, 1 figure
Probing Two Holographic Models of Strongly Coupled Anisotropic Plasma
Creators: name: Rebhan, Anton
name: Steineder, Dominik
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quark-gluon plasma during its initial phase after its production in heavy-ion collisions is expected to have substantial pressure anisotropies. In order to model this situation by a strongly coupled N=4 super-Yang-Mills plasma with fixed anisotropy by means of AdS/CFT duality, two models have been discussed in the literature. Janik and Witaszczyk have considered a geometry involving a comparatively benign naked singularity, while more recently Mateos and Trancanelli have used a regular geometry involving a nontrivial axion field dual to a parity-odd deformation of the gauge theory by a spatially varying theta parameter. We study the (rather different) implications of these two models on the heavy-quark potential as well as jet quenching and compare their respective predictions with those of weakly coupled anisotropic plasmas.
description: JHEP style, 26 pages, 10 figures. v2: references added, slightly extended discussion of comparison with hard anisotropic loop results and correspondingly updated fig. 6 (version to appear in JHEP)
title: Joachim Carl Hennings
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Joachim Carl Hennings as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Hierarchical Structure of Magnetohydrodynamic Turbulence In Position-Position-Velocity Space
Creators: name: Burkhart, Blakesley
name: Lazarian, A.
name: Goodman, Alyssa
name: Rosolowsky, Erik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Magnetohydrodynamic turbulence is able to create hierarchical structures in the interstellar medium that are correlated on a wide range of scales via the energy cascade. We use hierarchical tree diagrams known as dendrograms to characterize structures in synthetic Position-Position-Velocity (PPV) emission cubes of optically thin isothermal magnetohydrodynamic turbulence. We show that the structures and degree of hierarchy observed in PPV space are related to the physics of the gas, i.e. self-gravity and the global sonic and Alfvenic Mach number. Simulations with higher Alfvenic Mach number, self-gravity and supersonic flows display enhanced hierarchical structure. We observed a strong sonic and Alfvenic dependency when we apply the the statistical moments (i.e. mean, variance, skewness, kurtosis) to the dendrogram distribution. Larger magnetic field and sonic Mach number correspond to larger values of the moments. Application of the dendrogram to 3D density cubes, also known as Position-Position-Position cubes (PPP), reveals that the dominant emission contours in PPP and PPV are related for supersonic gas but not for subsonic. We also explore the effects of smoothing, thermal broadening and velocity resolution on the dendrograms in order to make our study more applicable to observational data. These results all point to hierarchical tree diagrams as being a promising additional tool for studying ISM turbulence and star forming regions in the direction of obtaining information on the degree of self-gravity, the Mach numbers and the complicated relationship between PPV and PPP.
description: submitted to ApJ
Tidal Dissipation in Planet-Hosting Stars: Damping of Spin-Orbit Misalignment and Survival of Hot Jupiters
Creators: name: Lai, Dong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of hot Jupiters around solar-type stars with very short orbital periods (~day) suggest that tidal dissipation in such stars is not too efficient so that these planets can survive against rapid orbital decay. This is consistent with recent theoretical works, which indicate that the tidal Q of planet-hosting stars can indeed be much larger than the values inferred from stellar binaries. On the other hand, recent measurements of Rossiter-McLaughlin effects in transiting hot Jupiter systems not only reveal that many such systems have misaligned stellar spin with respect to the orbital axis, but also show that systems with cooler host stars tend to have aligned spin and orbital axes. Winn et al. suggested that this obliquity - temperature correlation may be explained by efficient damping of stellar obliquity due to tidal dissipation in the star. This explanation, however, is in apparent contradiction with the survival of these short-period hot Jupiters. We show that in the solar-type parent stars of close-in exoplanetary systems, the effective tidal Q governing the damping of stellar obliquity can be much smaller than that governing orbital decay. This is because for misaligned systems, the tidal potential contains a Fourier component with frequency equal to the stellar spin frequency (in the rotating frame of the star). This component can excite inertial waves in the convective envelope of the star, and the dissipation of inertial waves then leads to a spin-orbit alignment torque, but not orbital decay. By contrast, for aligned systems, such inertial wave excitation is forbidden since the tidal forcing frequency is much larger than the stellar spin frequency. We derive a general effective tidal evolution theory for misaligned binaries, taking account of different tidal responses and dissipation rates for different tidal forcing components.
description: Appendix deleted. Match the published version: MNRAS, 423, 486-492 (2012)
title: Johann Arend Hentze
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Johann Arend Hentze as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
title: Reimagining the Umma : translocal space and the changing boundaries of Muslim political community.
Creators: name: Mandaville, Peter G.
Publisher: name: University of Kent
Year: 2021

description: A wide variety of 'translocal' forces - diasporic peoples, transnational social movements, global & migratory cities, post-national institutions, information technologies - are challenging the traditional state-centrism of International Relations' political imaginary. Moreover, just as people are translocal, so are their theories. This thesis analyses Islam as a form of 'travelling theory' in the context of the global transformations outlined above. It seeks to understand how globalising processes are manifested as lived experience through a discussion of debates over the meaning of Muslim identity, political community an the emergence of something like a 'critical Islam.' After a critique of state-centric thinking in International Relations, the thesis goes on to suggest that more sophisticated treatments of translocal politics can be found in the literatures of anthropology, postcolonial and cultural studies. A non-essentialist conception of Islam is introduced, followed by a discussion of the conditions under which Muslim discourses on the umma (the world community of believers) have historically been produced. Three key theoretical tropes - travelling theory, hybridity and diaspora - are then discussed as framing devices for understanding translocal politics. Two case study chapters, one on the politics of Muslim diaspora communities and the other on Muslim uses of communications and information technologies, are presented. The first focuses on debates with Muslim communities as to the nature and meaning of modern Islam, the reformulation of Muslim thought on politics, community and gender and the implications of travelling Islam's return journey to its various original settings. The second case study highlights the changing boundaries of religious knowledge by demonstrating how information technologies have been deployed as a mean by which to contest traditional sources of Islamic authority. In the concluding chapter it is argued that translocal forces are leading to the emergence of a wider Muslim public sphere. Futhermore, the critical discourses enabled by this translocal space amount to a reconceptualisation and reimagining of the umma.
Vorticity Statistics and the Time Scales of Turbulent Strain
Creators: name: Moriconi, L.
name: Pereira, R. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Time scales of turbulent strain activity, denoted as the strain persistence times of first and second order, are obtained from time-dependent expectation values and correlation functions of lagrangian rate-of-strain eigenvalues taken in particularly defined statistical ensembles. Taking into account direct numerical simulation data, our approach relies on heuristic closure hypotheses which allow us to establish a connection between the statistics of vorticity and strain. It turns out that softly divergent prefactors correct the usual "1/s" strain time-scale estimate of standard turbulence phenomenology, in a way which is consistent with the phenomenon of vorticity intermittency.
description: LaTex, 17 pages, 6 figures
Characterization of poly(3-hexylthiophene) based Schottky diodes
Creators: name: Dimopoulos, Alexandros Ioannis
Publisher: name: University of British Columbia
Year: 2012

description: This thesis describes the fabrication and electrical characterization of Schottky diodes based on the polymer semiconductor poly(3-hexylthiophene). Printed electronics may not be able to benefit from high vacuum processing, either for economic or technical reasons. The aim was to observe the effects on performance when Schottky diodes were built at atmospheric pressure. 200 nm thick films of poly(3-hexylthiophene) were formed on glass substrates by spinning a 1 wt% polymer solution in chloroform. Vacuum deposited aluminum and gold where used for the Schottky and ohmic contacts respectively. Two types of diodes were manufactured. One type (Au bottom) had its Schottky junction formed by evaporating aluminum onto the polymer under high vacuum. The other (Al bottom) had its Schottky junction formed by depositing the polymer onto aluminum at atmospheric pressure. The final yield of usable devices was 35% for Au bottom and 22% for Al bottom. The hole density and bulk mobility were derived from both DC and AC measurements. The bulk mobility was found to range from 2×10⁻⁵ cm²V⁻¹s⁻¹ to 6×10⁻⁵ cm²V⁻¹s⁻¹. The hole density was determined to be between 5×10¹⁶ cm⁻³ and 3x10¹⁷ cm⁻³. DC measurements showed that Au bottom devices had a current rectification ratio of 2×10⁴ at ±2 V, 100 times greater than Al bottom devices. The space charge limited current (SCLC) had to be considered to successfully model the DC behaviour. The small signal behaviour was modeled with a 2nd order series/parallel circuit, which was determined through impedance spectroscopy. Small signal performance of both device types was predicted to be poor. The corner frequency was determined to be less than 100 Hz for Al bottom devices, and less than 1 kHz for Au bottom devices. Large signal frequency performance of the diodes was tested with a half-wave peak rectifier. The maximum operating frequency was measured to be 40 kHz for Au bottom devices and 10 kHz for Al bottom devices.
Doppler- and recoil-free laser excitation of Rydberg states via three-photon transitions
Creators: name: Ryabtsev, I. I.
name: Beterov, I. I.
name: Tretyakov, D. B.
name: Entin, V. M.
name: Yakshina, E. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Three-photon laser excitation of Rydberg states by three different laser beams can be arranged in a star-like geometry that simultaneously eliminates the recoil effect and Doppler broadening. Our analytical and numerical calculations for a particular laser excitation scheme 5S_{1/2}->5P_{3/2}->6S_{1/2}->nP in Rb atoms have shown that compared to the one- and two-photon laser excitation this approach provides much narrower line width and longer coherence time for both cold atom samples and hot vapors, if the intermediate one-photon resonances of the three-photon transition are detuned by more than respective single-photon Doppler widths. This method can be used to improve fidelity of Rydberg quantum gates and precision of spectroscopic measurements in Rydberg atoms.
description: 7 pages, 4 figures
Restrictions on infinite sequences of type IIB vacua
Creators: name: Braun, Andreas P.
name: Johansson, Niklas
name: Larfors, Magdalena
name: Walliser, Nils-Ole
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ashok and Douglas have shown that infinite sequences of type IIB flux vacua with imaginary self-dual flux can only occur in so-called D-limits, corresponding to singular points in complex structure moduli space. In this work we refine this no-go result by demonstrating that there are no infinite sequences accumulating to the large complex structure point of a certain class of one-parameter Calabi-Yau manifolds. We perform a similar analysis for conifold points and for the decoupling limit, obtaining identical results. Furthermore, we establish the absence of infinite sequences in a D-limit corresponding to the large complex structure limit of a two-parameter Calabi-Yau. In particular, our results demonstrate analytically that the series of vacua recently discovered by Ahlqvist et al., seemingly accumulating to the large complex structure point, are finite. We perform a numerical study of these series close to the large complex structure point using appropriate approximations for the period functions. This analysis reveals that the series bounce out from the large complex structure point, and that the flux eventually ceases to be imaginary self-dual. Finally, we study D-limits for F-theory compactifications on K3\times K3 for which the finiteness of supersymmetric vacua is already established. We do find infinite sequences of flux vacua which are, however, identified by automorphisms of K3.
description: 35 pages. v2. Typos corrected, ref. added. Matches published version
Tuning and plateaux for the entropy of $α$-continued fractions
Creators: name: Carminati, Carlo
name: Tiozzo, Giulio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 11A55, 11K50, 37A10

description: The entropy $h(T_α)$ of $α$-continued fraction transformations is known to be locally monotone outside a closed, totally disconnected set $\EE$. We will exploit the explicit description of the fractal structure of $\EE$ to investigate the self-similarities displayed by the graph of the function $α\mapsto h(T_α)$. Finally, we completely characterize the plateaux occurring in this graph, and classify the local monotonic behaviour.
description: 20 pages, 2 figures. This version has been considerably expanded, and contains a new result (Theorem 3) classifying local behaviour of the entropy. We have also added several statements and proofs in order to avoid external references. Last but not least, we added an appendix which explains how the techniques we use are derived from Douady-Hubbard tuning for quadratic polynomials
Speech imagery as corollary discharge
Creators: name: Scott, Mark
Publisher: name: University of British Columbia
Year: 2012

description: This thesis tests the theory that the sensory content of inner speech is constituted by corollary discharge. Corollary discharge is a signal generated by the motor system and is a “prediction” of the sensory consequences of the motor system’s actions. Corollary discharge normally functions in the nervous system to segregate self-caused sensations from externally-caused sensations. It does this, partially, by attenuating the nervous system’s response to self-caused sensations. This thesis argues that corollary discharge has been co-opted in humans to provide the sensory content of speech imagery. The thesis further tests the claim that the sensory detail contained in speech imagery is sufficiently rich and sufficiently similar to the representations of external speech sounds that the perception of external speech sounds can be influenced by inner speech. This thesis claims that the perception of external speech is altered because corollary discharge prepares the auditory system to hear those sensory features which the corollary-discharge signal carries. These claims were tested experimentally by having participants engage in specific forms of speech imagery while categorizing external sounds. In one set of experiments, when external sound and speech imagery were in synchrony and were similar in content, the perception of the external sound was altered — the external sound came to be heard as matching the content of the speech imagery. In a second set of experiments, the presence of corollary discharge in speech imagery was tested. When a sensation matches a corollary discharge signal, the sensation tends to have an attenuated impact. This attenuation is a hallmark of corollary discharge. In this set of experiments, when participants’ speech imagery matched an external sound, the perceptual impact of the external sound was attenuated. Proper controls ensured that it was the degree of match between the speech imagery and the external sound that was responsible for this attenuation, rather than some extraneous factor.
International Policy Framework for Open Science
Creators: name: Persic, Ana
Publisher: name: Zenodo
Year: 2021

description: Recognizing Open Science as a true game-changer in addressing the pressing planetary and socio-economic challenges, UNESCO is leading a global dialogue with the aim of developing the first international standard-setting instrument on Open Science in the form of a UNESCO Recommendation. The Recommendation is expected to define shared values and principles for Open Science and identify concrete measures on open access and open data, with proposals to bring society closer to science and commitments to facilitate the production and dissemination of scientific knowledge worldwide. In her presentation, Dr Ana Persic will talk about UNESCO’s vision of using Open Science to strengthen the links between science and society and bridge the science, technology, and innovation (STI) gaps. She will describe the transparent and inclusive consultative process for developing the future UNESCO Recommendation on Open Science, and introduce the draft text of the Recommendation, which will be submitted to the UNESCO Member States for final adoption in November 2021.
Low-energy neutrino-electron scattering as a Standard Model probe: the potential of LENA as case study
Creators: name: Garces, E. A.
name: Miranda, O. G.
name: Tortola, M. A.
name: Valle, J. W. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Several proposals for studying neutrinos with large detectors are currently under discussion. We suggest that they could provide a precise measurement of the electroweak mixing angle as well as a probe for new physics, such as non-standard neutrino interactions (NSI), and the electroweak gauge structure. We illustrate this explicitly for the case of the LENA proposal, either with an artificial radioactive source or by using the solar neutrino flux.
description: 8 pages, 4 figures, fig 4 changed, final version to be published in Phys. Rev. D
Direct evidence of a zigzag spin chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation on single crystal $\rm Na_2IrO_3$
Creators: name: Ye, Feng
name: Chi, Songxue
name: Cao, Huibo
name: Chakoumakos, Bryan C.
name: Fernandez-Baca, Jaime A.
name: Custelcean, Radu
name: Qi, Tongfei
name: Korneta, O. B.
name: Cao, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have combined single crystal neutron and x-ray diffractions to investigate the magnetic and crystal structures of the honeycomb lattice $\rm Na_2IrO_3$. The system orders magnetically below $18.1(2)$ K with Ir$^{4+}$ ions forming zigzag spin chains within the layered honeycomb network with ordered moment of $\rm 0.22(1) μ_B$/Ir site. Such a configuration sharply contrasts the N{é}el or stripe states proposed in the Kitaev-Heisenberg model. The structure refinement reveals that the Ir atoms form nearly ideal 2D honeycomb lattice while the $\rm IrO_6$ octahedra experience a trigonal distortion that is critical to the ground state. The results of this study provide much-needed experimental insights into the magnetic and crystal structure crucial to the understanding of the exotic magnetic order and possible topological characteristics in the 5$d$-electron based honeycomb lattice.
description: Revised version as that to appear in PRB
OpenLitterMap - A Revolutionary App to Map Litter
Creators: name: Lynch, Seán
Publisher: name: Zenodo
Year: 2021

description: OpenLitterMap is an open source, interactive, and accessible database of the world's litter and plastic pollution. Inspired by the open values of OpenStreetMap, we apply the same principles of crowdsourcing and open data to litter and plastic pollution. All around the world, 100s of millions of people have been equipped with powerful devices that can collect data but this unprecedented human potential remains significantly underdeveloped. We are developing a fun, open, and rewarding data collection experience to harness this emerging resource, and empowering many people to share data and be a part of the scientific and public process for the first time. Although plastic pollution was first recognised to have a global distribution in the world's oceans as early as 1975, nothing was done for decades as access to knowledge was restricted. Once social media arrived, huge numbers of people were able to easily share and consume information. This resulted in a huge awakening of global pollution that changed mainstream political dialogue almost overnight. We are doing to data what social media did to information. OpenLitterMap is available as a web and mobile app on all platforms and is free to download and use.
Citizen Science as science innovation
Creators: name: Goldin, Jacqueline
Publisher: name: Zenodo
Year: 2021

description: We present findings from a current project in the Hout Catchment, Limpopo Province in South Africa, adding value to current discourse on citizen science (CS) and science innovation proposing that citizen science narrows the gap between technical expertise and concerns of social justice and research integrity. We propose a citizen science framework that builds on ideas of the living lab, trust and research integrity – building a new science platform. The idea of research integrity is not only about ethics but also about methods and we propose participatory methods that are in inclusive, just and fair. The frame presents the idea of water literacy – where the material or ‘science’ aspects of CS (dip-meters, rain gauges etc) intersect with the more intangible goods that have to do with human well-being. Considering CS within the frame of feminist philosophy, it is personally transformative with the element of ‘surprise’ that the end point is undetermined – and the process, however much ‘planned’ is unknown. CS in this instance is a powerful emancipatory tool that is able to generate virtuous cycles of inclusion and equality and contribute to innovative solutions in the realm of science.
Dialoghi per clarinetto e trombone
Creators: name: Casadei, Diego
Publisher: name: Zenodo
Year: 2005

description: Twelve duets for clarinet and trombone composed in 2005 and dedicated to Alberto Oliva, who plays trombone. At the same time, he wrote twelve duets for us, which are much better than mine :-). He won the challenge. Apart from "Egiziana" and "Modernamente", all other duets are inspired by famous composers. The "Ave Maria" is actually a transcription from Schubert's piece, "Danse macabre" is a paraphrase from Saint-Saëns, and the rest is suppose to mimic the style from famous composers.
A Note on the Collision of Reissner-Nordström Gravitational Shock Waves in AdS
Creators: name: Duenas-Vidal, Alvaro
name: Vazquez-Mozo, Miguel A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the collision of two Reissner-Nordström gravitational shock waves in AdS and show that the charge completely prevents the formation of marginally trapped surfaces of the Penrose type with topology S^(D-2), independently of the energy and the value of the impact parameter. In the case of head-on collisions, a numerical analysis shows that no trapped surfaces with topology S^1 \times S^(D-3) form either.
description: 13 pages, 6 figures. LaTeX. v2: major changes
Variations in the Stellar IMF: from Bottom to Top
Creators: name: Hopkins, Philip F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use a recently-developed analytic model for the ISM structure from scales of GMCs through star-forming cores to explore how the pre-stellar core mass function (CMF) and, by extrapolation, stellar initial mass function (IMF) should depend on both local and galactic properties. If the ISM is supersonically turbulent, the statistical properties of the density field follow from the turbulent velocity spectrum, and the excursion set formalism can be applied to analytically calculate the mass function of collapsing cores on the smallest scales on which they are self-gravitating (non-fragmenting). Two parameters determine the model: the disk-scale Mach number M_h (which sets the shape of the CMF), and the absolute velocity (to assign an absolute scale). For 'normal' variation in disk properties and core gas temperatures in the MW and local galaxies, there is almost no variation in the predicted high-mass behavior of the CMF/IMF. The slope is always close to Salpeter down to <1 M_sun. We predict modest variation in the sub-solar regime, mostly from variation in M_h, but within the observed scatter in sub-solar IMFs in local regions. For fixed galaxy properties, there is little variation in shape or 'upper mass limit' with parent GMC mass. However, in extreme starbursts (e.g. ULIRGs) we predict a bottom-heavy CMF. This agrees with the IMF inferred for the centers of Virgo ellipticals, believed to form in such a nuclear starburst. The CMF is bottom heavy despite the gas temperature being an order of magnitude larger, because M_h is also much larger. Larger M_h values make the 'parent' cloud mass (turbulent Jeans mass) larger, but promote fragmentation to smaller scales; this steepens the slope of the low-mass CMF and shifts the turnover mass. The model may predict a top-heavy CMF for the sub-pc disks around Sgr A*, but the relevant input parameters are uncertain.
description: 7 pages, 3 figures, MNRAS accepted (revised to match published version)
title: Giovanni Battista Tolomei S.J.
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Giovanni Battista Tolomei S.J. as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Testing neutrino masses in the R-parity violating minimal supersymmetric standard model with LHC results
Creators: name: Hanussek, M.
name: Kim, J. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the R-parity violating minimal supersymmetric standard model (MSSM), we use a hierarchical ansatz for the lepton-number violating trilinear Yukawa couplings by relating them to the corresponding Higgs-Yukawa couplings. This ansatz reduces the number of free parameters in the lepton-number violating sector from 36 to 6. Baryon-number violating terms are forbidden by imposing the discrete gauge symmetry Baryon Triality. We fit the lepton-number violating parameters to the most recent neutrino oscillation data, including the mixing angle theta13 found by Daya Bay. We find that we obtain phenomenologically viable neutrino masses and mixings only in the case of normal ordered neutrino masses and that the lepton-number violating sector is unambiguously determined by neutrino oscillation data. We discuss the resulting collider signals for the case of a neutralino as well as a scalar tau lightest supersymmetric particle. We use the ATLAS searches for multi-jet events and large transverse missing momentum in the 0, 1 and 2 lepton channel with 7 TeV center-of-mass energy in order to derive exclusion limits on the parameter space of this R-parity violating supersymmetric model.
Equivariant Equipartitions: Ham Sandwich Theorems for Finite Subgroups of Spheres
Creators: name: Simon, Steven
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: Equivariant "Ham Sandwich" Theorems are obtained for the finite subgroups G of the unit spheres S(F) in the classical algebras F = R, C, and H. Given any n F-valued mass distributions on F^n, it is shown that there exists a G-equivariant decomposition of F^n into |G| regular convex fundamental regions which "G-equipartition" each of the n measures, as realized by the vanishing of the "G-averages" of these regions' measures. Applications for real measures follow, among them that any n signed mass distributions on R^{(p-1)n} can be equipartitioned by a single regular p-fan when p a prime number.
description: 14 pages. Subsumes 1006.4614 and 1009.5896, including more applications
title:  Survey of Attitudes of Licensed Dental Hygienists Toward Continuing Education in a State with Mandatory Continuing Education Versus a State without Mandatory Continuing Education
Creators: name: Behroozi, Katharine Reeves
Publisher: name: Old Dominion University Libraries
Year: 1988

description: The purpose of this research was to compare attitudes of licensed dental hygienists toward continuing education (CE) in two states: Kentucky, a state with mandatory continuing education (MCE) as a requirement for dental hygiene relicensure and Virginia, a state without MCE for dental hygiene relicensure. A self-designed, 28-item instrument, Continuing Education Attitudinal Questionnaire, was mailed to a stratified and random sample of 400 licensed dental hygienists in Kentucky and Virginia. Employing the chi-square test for independence, analysis of results revealed that Kentucky participants responded more affirmatively than Virginia participants to attitudinal statements regarding CE, particularly in areas of MCE, benefits of CE, and CE program administration. Virginia respondents recorded higher percentages of undecided responses, especially in areas of benefits of CE and optional methodologies for CE instruction. Therefore, increased exposure to CE courses through MCE may result in more favorable attitudes toward CE. The study also revealed that association members displayed more favorable attitudes toward CE than non-association members, and that graduation date did not appear related to attitudes toward CE.
Signatures of three coalescing eigenfunctions
Creators: name: Demange, Gilles
name: Graefe, Eva-Maria
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Parameter dependent non-Hermitian quantum systems typically not only possess eigenvalue degeneracies, but also degeneracies of the corresponding eigenfunctions at exceptional points. While the effect of two coalescing eigenfunctions on cyclic parameter variation is well investigated, little attention has hitherto been paid to the effect of more than two coalescing eigenfunctions. Here a characterisation of behaviours of symmetric Hamiltonians with three coalescing eigenfunctions is presented, using perturbation theory for non-Hermitian operators. Two main types of parameter perturbations need to be distinguished, which lead to characteristic eigenvalue and eigenvector patterns under cyclic variation. A physical system is introduced for which both behaviours might be experimentally accessible.
description: 14 pages, 4 figures. Typos corrected, slightly extended, to appear in J. Phys. A
title: Cerebral hemiatrophy - Etiological chracterization using neuro-imaging findings.
Creators: name: Chudasama, Shilpa
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Ischaemia / Infarction
subject: Developmental disease
subject: Congenital
subject: Diagnostic procedure
subject: CT
subject: MR
subject: Neuroradiology brain
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Following objectives are considered in relation to this article: To identify cerebral hemi-atrophy and evaluation of associated factors with a systematic approach. To emphasize the role of neuro-imaging findings associated with cerebral hemi-atrophy...
Coulomb correlations effects on localized charge relaxation in the coupled quantum dots
Creators: name: Arseyev, P. I.
name: Maslova, N. S.
name: Mantsevich, V. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyzed localized charge time evolution in the system of two interacting quantum dots (QD) (artificial molecule) coupled with the continuous spectrum states. We demonstrated that Coulomb interaction modifies relaxation rates and is responsible for non-monotonic time evolution of the localized charge. We suggested new mechanism of this non-monotonic charge time evolution connected with charge redistribution between different relaxation channels in each QD.
description: 10 pages, 10 figures
title: Liver stiffness measured by shear wave elastography during post liver transplantation follow up and clinical outcomes: a retrospective mono centric study.
Creators: name: Boeken, Tom
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Liver
subject: Biliary Tract / Gallbladder
subject: Elastography
subject: Ultrasound
subject: Outcomes analysis
subject: Transplantation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Shear Wave Elastography (SWE) allows a non-invasive assessment of liver stiffness (LS) and has been thoroughly compared to Transient Elastography (TE) and liver biopsies in chronic liver disease. LS values obtained with SWE are now well known for...
title: Investigating the Status of Intercultural Communicative Competence in Algerian Middle Schools
title: The Case of the New Curriculum of EFL
titleType: Subtitle
Creators: name: Rabehi, Afaf
Publisher: name: Lancaster University
Year: 2021

description: This research is based on a qualitative exploratory enquiry which aims to investigate the status of culture in the new middle school curriculum of EFL (English as a Foreign Language) in Algeria and its potential to develop learners’ ICC (Intercultural Communicative Competence). The current literature on ICC recognises the urgent need for FL (Foreign Language) education to shift from the traditional approach of teaching culture, which is knowledge based, to introducing the intercultural dimension instead. Consequently, FL institutions, mainly in Western contexts, have developed practical guidelines to help in implementing and assessing ICC (e.g. the Common European Framework of Reference, CEFR) in the classroom. However, Arab contexts such as the Algerian one, remain unexplored. The key question that this study addresses is How far does the cultural dimension of the new EFL curriculum in Algerian middle schools contribute to the development of learners’ ICC? Methodologically, this research is based on social constructionism; subsequently, an instrumental case study was undertaken drawing on EFL textbooks and semi-structured interviews with EFL educators as the main data sources. Data analysis is guided by Byram’s (1997) model of intercultural competence (IC). The findings of this study show that the new EFL textbooks, as the main resources for Algerian teachers and learners, take a nationalist and essentialist approach to addressing culture; therefore, barely encourage the development of ICC. Most cultural representations are Algerian-centred which means that learners’ CCA (Critical Cultural Awareness) is not developed. Similarly, analysis of participants’ perceptions, experiences, and teaching practices revealed that EFL teaching in Algeria is still focused on communicative competence, and culture teaching practices are highly influenced by religion and national identity, among other factors. Therefore, the ultimate objective of the new curriculum is to present and represent Algeria to the world. Through focusing on two aspects of the EFL curriculum (textbooks and educators), a gap in authors and teachers’ interpretations of the same resources is identified. Thus, this study contributes to the literature, particularly, the factors that affect development of ICC; it also offers practical implications for EFL institutions and educators in Algeria.
title: Taste the difference! Sialoplasty - indications and technique
Creators: name: Joshi, Vanya
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dilatation
subject: Sialography
subject: Fluoroscopy
subject: Salivary glands
subject: Head and neck

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Understand the main clinical indications for sialoplasty Demonstrate the main imaging findings on sialography Understand the technique of...
Possible observation of parametrically amplified coherent phasons in K0.3MoO3 using time-resolved extreme-ultraviolet ARPES
Creators: name: Liu, H. Y.
name: Gierz, I.
name: Petersen, J. C.
name: Kaiser, S.
name: Simoncig, A.
name: Cavalieri, A. L.
name: Cacho, C.
name: Turcu, I. C. E.
name: Springate, E.
name: Frassetto, F.
name: Poletto, L.
name: Dhesi, S. S.
name: Xu, Z. -A.
name: Cuk, T.
name: Merlin, R.
name: Cavalleri, A.
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 use time- and angle-resolved photoemission spectroscopy (tr-ARPES) in the Extreme Ultraviolet (EUV) to measure the time- and momentum-dependent electronic structure of photo-excited K0.3MoO3. Prompt depletion of the Charge Density Wave (CDW) condensate launches coherent oscillations of the amplitude mode, observed as a 1.7-THz-frequency modulation of the bonding band position. In contrast, the anti-bonding band oscillates at about half this frequency. We attribute these oscillations to coherent excitation of phasons via parametric amplification of phase fluctuations.
description: 4 figures