cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The impact of COVID-19 on community integration, quality of life, depression and anxiety in people with chronic spinal cord injury
Creators: name: García-Rudolph, Alejandro
name: Saurí, Joan
name: Carballo, Jaume López
name: Cegarra, Blanca
name: Wright, Mark Andrew
name: Opisso, Eloy
name: Tormos, Josep María
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Compare community integration, quality of life, anxiety and depression of people with chronic spinal cord injury (SCI) living in the community before the outbreak of coronavirus SARS-CoV-2 disease (COVID-19) and during it. Prospective observational cohort study. In-person follow-up visits (before COVID-19 outbreak) to a rehabilitation hospital in Spain and on-line during COVID-19. Community dwelling adults (≥ 18 years) with chronic SCI. Hospital Anxiety and Depression Scale (HADS), Community Integration Questionnaire (CIQ) and World Health Organization Quality of Life (WHOQOL-BREF) were compared using the Wilcoxon ranked test or paired t-test when appropriate. One hundred and seventy five people with SCI assessed on-line between June 2020 and November 2020 were compared to their own assessments before COVID-19. Participants reported significantly decreased Social Integration during COVID-19 compared to pre-pandemic scores (P = 0.037), with a small effect size (d = −0.15). Depression (measured using HADS) was significantly higher than before COVID-19 (P < 0.001) with a moderate effect size (d = −0.29). No significant differences were found in any of the 4 WHOQOL-BREF dimensions (Physical, Psychological, Social and Environmental). Nevertheless, when all participants were stratified in two groups according to their age at on-line assessment, the younger group (19–54 years, N = 85) scored lower during COVID-19 than before, in WHOQOL-BREF Physical (P = 0.004), (d = −0.30) and Psychological dimensions (P = 0.007) (d = −0.29). The older group (55–88 years, N = 0) reported no significant differences in any dimension. COVID-19 impacted HADS’ depression and CIQ’s social integration. Participants younger than 55 years were impacted in WHOQOL-BREF’s physical and psychological dimensions, meanwhile participants older than 55, were not.
Generalized gravitomagnetic clock effect
Creators: name: Hackmann, Eva
name: Lämmerzahl, Claus
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In General Relativity, the rotation of a gravitating body like the Earth influences the motion of orbiting test particles or satellites in a non-Newtonian way. This causes, e.g., a precession of the orbital plane known as the Lense-Thirring effect and a precession of the spin of a gyroscope known as the Schiff effect. Here, we discuss a third effect first introduced by Cohen and Mashhoon called the gravitomagnetic clock effect. It describes the difference in proper time of counterrevolving clocks after a revolution of $2π$. For two clocks on counterrotating equatorial circular orbits around the Earth, the effect is about $10^{-7}$ seconds per revolution, which is quite large. We introduce a general relativistic definition of the gravitomagnetic clock effect which is valid for arbitrary pairs of orbits. This includes rotations in the same direction and different initial conditions, which are crucial if the effect can be detected with existing satellites or with payloads on nondedicated missions. We also derive the post-Newtonian expansion of the general relativistic expression and calculate the effect for the example of a satellite of a Global Navigation Satellite System compared to a geostationary satellite.
description: 9 pages, 1 figure; v2: minor corrections to match published version
Visualization of localized deformation in friction
Creators: name: Tarasov S. Yu
name: Polyakov S., N.
name: Bikbaev S., A.
Publisher: name: Физическая мезомеханика
Year: 2005

description: In-situ examination of deformation zones in friction has been carried out using a method of computing decorrelation. Two types of deformation zones, namely, moving and fixed, have been revealed. The fixed zones correspond to deformation localization in surface layers of specimens. With atomic force acoustic and scanning electron microscopy we study the structure of the material in the localization zone.
Seniority-based coupled cluster theory
Creators: name: Henderson, Thomas M.
name: Bulik, Ireneusz W.
name: Stein, Tamar
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Doubly occupied configuration interaction (DOCI) with optimized orbitals often accurately describes strong correlations while working in a Hilbert space much smaller than that needed for full configuration interaction. However, the scaling of such calculations remains combinatorial with system size. Pair coupled cluster doubles (pCCD) is very successful in reproducing DOCI energetically, but can do so with low polynomial scaling ($N^3$, disregarding the two-electron integral transformation from atomic to molecular orbitals). We show here several examples illustrating the success of pCCD in reproducing both the DOCI energy and wave function, and show how this success frequently comes about. What DOCI and pCCD lack are an effective treatment of dynamic correlations, which we here add by including higher-seniority cluster amplitudes which are excluded from pCCD. This frozen pair coupled cluster approach is comparable in cost to traditional closed-shell coupled cluster methods with results that are competitive for weakly correlated systems and often superior for the description of strongly correlated systems.
description: Revised manuscript
Το Blockchain στην Υπηρεσία του Διαδικτύου των Πραγμάτων: Επισκόπηση των Βασικών Χαρακτηριστικών τους και των Δυνατοτήτων Συνδυασμένης Αξιοποίησής τους
Creators: name: Vasileiadis, Pavlos D.
Publisher: name: Zenodo
Year: 2020
Subjects: Pavlos Vasileiadis
Παύλος Βασιλειάδης
IoT and Blockchain
IoT

description: English title: Blockchain in the Service of the Internet of Things: An Overview of their Key Elements and Combined Capabilities
Topological flat bands in optical checkerboard-like lattices
Creators: name: Paananen, Tomi
name: Dahm, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present comparatively simple two-dimensional and three-dimensional checkerboard-like optical lattices possessing nontrivial topological properties. By simple tuning of the parameters these lattices can have a topological insulating phase, a topological semi-metallic phase, or a trivial insulating phase. This allows study of different topological phase transitions within a single cold atom system. In the topologically nontrivial phases flat bands appear at the surfaces of the system. These surface states possess short localization lengths such that they are observable even in systems with small lattice dimensions. Our proposed lattices neither need spin-orbit coupling nor non-Abelian gauge fields to reach topologically nontrivial states.
description: 14 pages, 6 figures
Model-based identification of high energy density solidstate lithium-ion batteries with hybrid electrolytes
Creators: name: Toghyani, Somayeh
name: Baakes, Florian
name: Cistjakov, Walter
name: Zhang, Ningxin
name: Kühnelt, Helmut
name: Krewer, Ulrike
Publisher: name: Zenodo
Year: 2022
Subjects: IMOTHEP
H2020
hybrid-electric aircraft
H2020 Transport
climate change
hybrid electric propulsion
green aviation

description: Poster at the 31st Topical Meeting of the International Society of Electrochemistry, Aachen, Germany, 15-19/5/2022.
Macroscopic Dust in Protoplanetary Disks - From Growth to Destruction
Creators: name: Deckers, Johannes
name: Teiser, Jens
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The collision dynamics of dusty bodies are crucial for planetesimal formation. Especially decimeter agglomerates are important in the different formation models. Therefore, in continuation of our experiments on mutual decimeter collisions, we investigate collisions of centimeter onto decimeter dust agglomerates in a small drop tower under vacuum conditions (p<5*$10^{-1}$ mbar) at a mean collision velocity of 6.68 +- 0.67m/s. We use quartz dust with irregularly shaped micrometer grains. Centimeter projectiles with different diameters, masses and heights are used, their typical volume filling factor is $Φ_{p,m}$=0.466+-0.02. The decimeter agglomerates have a mass of about 1.5kg, a diameter and height of 12cm and a mean filling factor of $Φ_{t,m}$=0.44+-0.004. At lower collision energies only the projectile gets destroyed and mass is transferred to the target. The accretion efficiency decreases with increasing obliquity and increasing difference in filling factor, if the projectile is more compact than the target. The accretion efficiency increases with increasing collision energy for collision energies under a certain threshold. Beyond this threshold at 298+-25 mJ catastrophic disruption of the target can be observed. This corresponds to a critical fragmentation strength Q*=190+-16 mJ/kg, which is a factor of four larger than expected. Analyses of the projectile fragments show a power law size distribution with average exponent of -3.8+-0.3. The mass distributions suggest that the fraction of smallest fragments increases for higher collision energies. This is interesting for impacts of small particle on large target bodies within protoplanetary disks, as smaller fragments couple better to the surrounding gas and re-accretion by gas drag is more likely.
description: 11 pages, 14 figures
Simulated Interregional Models of the Livestock-Meat Economy
Creators: name: Crom, Richard J.
name: Crom, Richard J.
Publisher: name: Unknown
Year: 1967
Subjects: Labor and Human Capital
Livestock Production/Industries
Production Economics
Research Methods/ Statistical Methods

description: Excerpt from the report Summary: Optimal interregional trade patterns for slaughter cattle and hogs, and beef and pork are determined under several alternative market conditions that might occur in the midseventies. Projections of cattle and hog production for slaughter, beef and pork consumption, slaughter capacity, transportation costs, and labor costs for slaughter in 26 regions of the continental United States provide the basic data for the model used. The spatial model developed and used by Judge, Havlicek, and Rizek in Research Bulletin 163 was used to determine the optimal flows of both livestock and meat. In this model, both livestock and meat transportation costs and slaughter labor costs are minimized, subject to the maximum slaughter capacity available in each region.
Connecting real-time properties of the massless Schwinger model to the massive case
Creators: name: Hebenstreit, Florian
name: Berges, Jürgen
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum electrodynamics in $1 + 1$ space-time dimensions is analytically solvable for massless fermions, while no solution is known for massive fermions. Employing the classical-statistical approach, we simulate the real-time dynamics on a lattice using Wilson fermions with mass $m$ at gauge coupling $g$. It is shown that quantitative properties of the massless Schwinger model are emerging in the limit of large $g/m$. We investigate two scenarios corresponding to opposite charges which are either held fixed or moving back-to-back along the light cone, as employed in effective descriptions for jet energy loss and photon production in the context of heavy-ion collisions. Remarkably, we find that the dynamics is rather well described by the massless limit for a wide range of mass values at fixed coupling. Moreover, our study shows that previous approximate scenarios with external charges on the light cone rather accurately capture the self-consistent dynamics of the energy conserving simulation.
description: 9 pages, 8 figures. Revised version: minor corrections, PRD Version
Interlocal Governmental Cooperation: A Study of Five States
Creators: name: Stoner, John E.
name: Stoner, John E.
Publisher: name: Unknown
Year: 1967
Subjects: Community/Rural/Urban Development
Public Economics

description: Excerpt from the report Summary: As demands for governmental services increase in rural areas, alternative ways of providing the services and the funds to pay for them need to be studied. Cooperation among local units of government in rural areas has been advanced as a desirable alternative, but little information was available about how cooperative endeavors worked out in practice. The present study was designed to explore local cooperation in the rural, nonmetropolitan portions of five States—Alabama, Indiana, Nebraska, Pennsylvania and Wisconsin. These States were selected as representative of those with a variety of systems of local government.
title: Multilevel and empirical reliability estimates of learning growth: A simulation study and empirical illustration
Creators: name: Forthmann, Boris
name: Förster, Natalie Gabriele
name: Souvignier, Elmar
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 150 Psychology

description: Reliable learning progress information is crucial for teachers’ interpretation and data-based decision making in everyday classrooms. Slope estimates obtained from simple regression modeling or more complex latent growth models are typically used in this context as indicators of learning progress. Research on progress monitoring has used mainly two ways to estimate reliability of learning progress, namely (a) split-half reliability and (b) multilevel reliability. In this work we introduce empirical reliability as another attractive alternative to quantify measurement precision of slope estimates (and intercepts) in learning progress monitoring research. Specifically, we extended previous work on slope reliability in two ways: (a) We evaluated in a simulation study how well multilevel reliability and empirical reliability work as estimates of slope reliability, and (b) we wanted to better understand reliability of slopes as a latent variable (by means of empirical reliability) vs. slopes as an observed variable (by means of multilevel reliability). Our simulation study demonstrates that reliability estimation works well over a variety of different simulation conditions, while at the same time conditions were identified in which reliability estimation was biased (i.e., with very poor data quality, eight measurement points, and when empirical reliability was estimated). Furthermore, we employ multilevel reliability and empirical reliability to estimate reliability of intercepts (i.e., initial level) and slopes for the quop-L2 test. Multilevel and empirical reliability estimates were comparable in size with only slight advantages for latent variable scores. Future avenues for research and practice are discussed.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Testing and Using the Lewin-Lieb Bound in Density Functional Theory
Creators: name: Feinblum, David V.
name: Kenison, John
name: Burke, Kieron
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Lewin and Lieb have recently proven several new bounds on the exchange-correlation energy that complement the Lieb-Oxford bound. We test these bounds for atoms, for slowly-varying gases, and for Hooke's atom, finding them usually less strict than the Lieb-Oxford bound. However, we also show that, if a generalized gradient approximation (GGA) is to guarantee satisfaction of the new bounds for all densities, new restrictions on the the exchange-correlation enhancement factor are implied.
Fast universal quantum gates on microwave photons with all-resonance operations in circuit QED
Creators: name: Hua, Ming
name: Tao, Ming-Jie
name: Deng, Fu-Guo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Stark shift on a superconducting qubit in circuit quantum electrodynamics (QED) has been used to construct universal quantum entangling gates on superconducting resonators in previous works. It is a second-order coupling effect between the resonator and the qubit in the dispersive regime, which leads to a slow state-selective rotation on the qubit. Here, we present two proposals to construct the fast universal quantum gates on superconducting resonators in a microwave-photon quantum processor composed of multiple superconducting resonators coupled to a superconducting transmon qutrit, that is, the controlled-phase (c-phase) gate on two microwave-photon resonators and the controlled-controlled phase (cc-phase) gates on three resonators, resorting to quantum resonance operations, without any drive field. Compared with previous works, our universal quantum gates have the higher fidelities and shorter operation times in theory. The numerical simulation shows that the fidelity of our c-phase gate is 99.57% within about 38.1 ns and that of our cc-phase gate is 99.25% within about 73.3 ns.
description: 12 pages, 6 figures, 2 tables
Natural Braneworld Inflation in Light of Recent Results from Planck and BICEP2
Creators: name: Neupane, Ishwaree P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we report on a major theoretical observation in cosmology. We present a concrete cosmological model for which inflation has natural beginning and natural ending. Inflation is driven by a cosine-form potential, $V(ϕ)= Λ^4 (1-\cos(ϕ/f))$, which begins at $ϕ\lesssim πf$ and ends at $ϕ=ϕ_{\text{end}} \lesssim 5 f/3$. The distance traversed by the inflaton field $ϕ$ is sub-Planckian. The Gauss-Bonnet term ${\cal R}^2$ arising as leading curvature corrections in the action $S = \int d^5{x} \sqrt{-g_{5}} M^3 (- 6λM^2 + R + αM^{-2} {\cal R}^2)+ \int d^{4}x \sqrt{-g_{4}} (\dotϕ^2/2 - V(ϕ)- σ+{\cal L}_{\text{matter}})$ (where $α$ and $λ$ are constants and $M$ is the five-dimensional Planck mass) plays a key role to terminate inflation. The model generates appropriate tensor-to-scalar ratio $r$ and inflationary perturbations that are consistent with results from Planck and BICEP2. For example, for $N_*= 50-60$ and $n_s\sim 0.960\pm 0.005$, the model predicts that $M\sim 5.64\times 10^{16}\,{\text{GeV}}$ and $r\sim (0.14-0.21)$ [$N_*$ is the number of {\it e}--folds of inflation and $n_s$ ($n_{t}$) is the scalar (tensor) spectrum spectral index]. The ratio $-n_t/r$ is (13% -- 24%) less than its value in 4D Einstein gravity, $-n_t/r=1/8$. The upper bound on the energy scale of inflation $V^{1/4}=2.37\times 10^{16}\,{\text{GeV}}$ ($r<0.27$) implies that $(-λα) \gtrsim 75 \times 10^{-5}$ and $Λ<2.17\times 10^{16}\,{\text{GeV}}$, which thereby rule out the case $α=0$ (Randall-Sundrum model). The true nature of gravity is holographic as implied by braneworld realization of string and M theory. The model correctly predicts a late epoch cosmic acceleration with the dark energy equation of state ${\text w}_{\text{DE}}\approx -1$.
description: 13 pages, 14 figures; v2: minor changes, published version
Differential rotation in main-sequence solar-like stars: Qualitative inference from asteroseismic data
Creators: name: Lund, Mikkel N.
name: Miesch, Mark S.
name: Christensen-Dalsgaard, Jørgen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding differential rotation of Sun-like stars is of great importance for insight into the angular momentum transport in these stars. One means of gaining such information is that of asteroseismology. By a forward modeling approach we analyze in a qualitative manner the impact of different differential rotation profiles on the splittings of p-mode oscillation frequencies. The optimum modes for inference on differential rotation are identified along with the best value of the stellar inclination angle. We find that in general it is not likely that asteroseismology can be used to make an unambiguous distinction between a rotation profile such as, e.g., a conical Sun-like profile and a cylindrical profile. In addition, it seems unlikely that asteroseismology of Sun-like stars will result in inferences on the radial profile of the differential rotation, such as can be done for, e.g., red giants. At best one could possibly obtain the sign of the radial differential rotation gradient. Measurements of the extent of the latitudinal differential from frequency splitting are, however, more promising. One very interesting aspect that could likely be tested from frequency splittings is whether the differential rotation is solar-like or anti-solar-like in nature, in the sense that a solar-like profile has an equator rotating faster than the poles.
description: 30 pages, 21 figures, Published in The Astrophysical Journal (Figures 3 and 4 have been changed relative to the published version)
AC susceptibility of an assembly of nanomagnets: combined effects of surface anisotropy and dipolar interactions
Creators: name: Vernay, F.
name: Sabsabi, Z.
name: Kachkachi, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We compute the AC susceptibility of a weakly dipolar-interacting monodisperse assembly of magnetic nanoclusters with oriented anisotropy. For this purpose we first compute the relaxation rate in a longitudinal magnetic field of a single nanomagnet taking account of both dipolar interactions in the case of dilute assemblies and surface anisotropy. We then study the behavior of the real and imaginary components of the AC susceptibility as functions of temperature, frequency, surface anisotropy and inter-particle interactions. We find that the surface anisotropy induces an upward shift of the temperature at the maximum of the AC susceptibility components and that its effects may be tuned so as to screen out the effects of interactions. The phenomenological Vogel-Fulcher law for the effect of dipolar interaction on the relaxation rate is revisited within our formalism and a semi-analytical expression is given for the effective temperature is given in terms of inter alia the applied field, surface anisotropy and dipolar interaction.
description: 6 figures, Phys. Rev. B, In Press
Schur Superpolynomials: Combinatorial Definition and Pieri Rule
Creators: name: Blondeau-Fournier, Olivier
name: Mathieu, Pierre
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Schur superpolynomials have been introduced recently as limiting cases of the Macdonald superpolynomials. It turns out that there are two natural super-extensions of the Schur polynomials: in the limit $q=t=0$ and $q=t\rightarrow\infty$, corresponding respectively to the Schur superpolynomials and their dual. However, a direct definition is missing. Here, we present a conjectural combinatorial definition for both of them, each being formulated in terms of a distinct extension of semi-standard tableaux. These two formulations are linked by another conjectural result, the Pieri rule for the Schur superpolynomials. Indeed, and this is an interesting novelty of the super case, the successive insertions of rows governed by this Pieri rule do not generate the tableaux underlying the Schur superpolynomials combinatorial construction, but rather those pertaining to their dual versions. As an aside, we present various extensions of the Schur bilinear identity.
Antiferromagnetic Topological Superconductor and Electrically Controllable Majorana Fermions
Creators: name: Ezawa, Motohiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the realization of a topological superconductor in a generic bucked honeycomb system equipped with four types of mass-generating terms, where the superconductor gap is introduced by attaching the honeycomb system to an $s$-wave superconductor. Constructing the topological phase diagram, we show that Majorana modes are formed in the phase boundary. In particular, we analyze the honeycomb system with antiferromagnetic order in the presence of perpendicular electric field $E_{z}$. It becomes topological for $|E_{z}|>E_{z}^{\text{cr}}$ and trivial for $|E_{z}|
description: 5 pages, 3 figures
X-ray states of redback millisecond pulsars
Creators: name: Linares, Manuel
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Compact binary millisecond pulsars with main-sequence donors, often referred to as "redbacks", constitute the long-sought link between low-mass X-ray binaries and millisecond radio pulsars, and offer a unique probe of the interaction between pulsar winds and accretion flows. We present a systematic study of eight nearby redbacks, using more than 100 observations obtained with Swift's X-ray Telescope. We distinguish between three main states: pulsar, disk and outburst states. We find X-ray mode switching in the disk state of PSR J1023+0038 and XSS J12270-4859, similar to what was found in the other redback which showed evidence for accretion: rapid, recurrent changes in X-ray luminosity (0.5-10 keV, L$_\mathrm{X}$), between [6-9]$\times$10$^{32}$ erg s$^{-1}$ (disk-passive state) and [3-5]$\times$10$^{33}$ erg s$^{-1}$ (disk-active state). This strongly suggests that mode switching $-$which has not been observed in quiescent low-mass X-ray binaries$-$ is universal among redback millisecond pulsars in the disk state. We briefly explore the implications for accretion disk truncation, and find that the inferred magnetospheric radius in the disk state of PSR J1023+0038 and XSS J12270-4859 lies outside the light cylinder. Finally, we note that all three redbacks which have developed accretion disks have relatively high L$_\mathrm{X}$ in the pulsar state ($>$10$^{32}$ erg s$^{-1}$).
description: Accepted for publication in The Astrophysical Journal. Minor revision after referee's comments, including a brief discussion of the different variability seen in SAX J1808.4-3658. 10 pages, 5 figures, 1 table
Probing the Short Range Spin Dependent Interactions by Polarized $^{3}He$ Atom Beams
Creators: name: Yan, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Experiments using polarized $^{3}He$ atom beams to search for short range spin dependent forces are proposed. High intensity, high polarization, small beam size $^{3}He$ atom beams have been successfully produced and used in surface science researches. By incorporating background reduction designs as combination shielding by $μ$-metal and superconductor and double beam pathes, the precision of spin rotation angle per unit length could be improved by a factor of $\sim10^{4}$. By this precision, in combination with using a high density and low magnetic susceptibility sample source mass,and reversing one beam path if necessary, sensitivities on three different types of spin dependent interactions could be possibly improved by as much as $\sim10^{2}$ to $\sim10^{8}$ over the current experiments at the millimeter range.
Prof. Dr. Dario Cebic: ANALYSE Claude Debussy - Selected works for piano (Préludes II)/ ,,Cloches à travers les feuilles"
Creators: name: Dr. Dario Cebic
Publisher: name: Zenodo
Year: 2020
Subjects: Debussy, Piano

description: Prof. Dr. Dario Cebic ANALYSE Claude Debussy - Selected works for piano (Préludes II)/ ,,Cloches à travers les feuilles"
Effects of Lifshitz Transition on Charge Transport in Magnetic Phases of Fe-Based Superconductors
Creators: name: Wang, Y.
name: Gastiasoro, Maria N.
name: Andersen, Brian M.
name: Tomić, M.
name: Jeschke, Harald O.
name: Valentí, Roser
name: Paul, Indranil
name: Hirschfeld, P. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The unusual temperature dependence of the resistivity and its in-plane anisotropy observed in the Fe-based superconducting materials, particularly Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$, has been a longstanding puzzle. Here we consider the effect of impurity scattering on the temperature dependence of the average resistivity within a simple two-band model of a dirty spin density wave metal. The sharp drop in resistivity below the Néel temperature $T_N$ in the parent compound can only be understood in terms of a Lifshitz transition following Fermi surface reconstruction upon magnetic ordering. We show that the observed resistivity anisotropy in this phase, arising from nematic defect structures, is affected by the Lifshitz transition as well.
description: 8 pages, 5 figures
A supersymmetric reduction on the three-sphere
Creators: name: Deger, Nihat Sadik
name: Samtleben, Henning
name: Sarioglu, Ozgur
name: Bleeken, Dieter Van den
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the embedding of three-dimensional SO(4)$\ltimes\mathbb{R}^6$ gauged $N=4$ supergravity with quaternionic target space SO(4,4)$/$(SO(4)$\times$SO(4)) into $D=6$, $N=(1,0)$ supergravity coupled to a single chiral tensor multiplet through a consistent reduction on AdS$_3\times S^3$.
description: 16 pages, a reference added, to appear in Nucl.Phys. B
Scanning tunneling spectroscopy and surface quasiparticle interference in models for the strongly correlated topological insulators SmB6 and PuB6
Creators: name: Baruselli, Pier Paolo
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: SmB6 is one of the candidate compounds for topological Kondo insulators, a class of materials which combines a non-trivial topological band structure with strong electronic correlations. Here we employ a multiband tight-binding description, supplemented by a slave-particle approach to account for strong interactions, to theoretically study the surface-state signatures in scanning tunneling spectroscopy (STS) and quasiparticle interference (QPI). We discuss the spin structure of the three surface Dirac cones of SmB6 and provide concrete predictions for the energy and momentum dependence of the resulting QPI signal. Our results also apply to PuB6, a strongly correlated topological insulator with a very similar electronic structure.
description: 5+8 pages, 4+5 figs, (v2) minor modifications, final version as published
Strata Plan Cancellations in Australasia: A Comparative Analysis of Nine Jurisdictions
Creators: name: TI, Seng Wei, Edward
Publisher: name: Monash University
Year: 2022
Subjects: Property law (excl. intellectual property law)

description: A growing number of Australasian jurisdictions now permit a super-majority of owners to terminate a co-owned building scheme allowing proprietors to redevelop, or more commonly, sell the underlying land. This planning tool aids municipal rejuvenation, prevents urban sprawl and provides new housing. In this article, I examine the provisions pertaining to cancellation of unit plans under nine jurisdictions — New Zealand and all eight jurisdictions in Australia. This comparative analysis highlights several unique aspects of the Unit Titles Act 2010 (NZ) such as the way its voting thresholds are calculated and the idiosyncratic application of the ‘just and equitable’ standard in endorsing all forms of plan cancellations. At the same time, New Zealand’s unit title jurisprudence has been described as ‘relatively immature’. This confluence provides the basis to analyse these novel issues from both a doctrinal and comparative perspective across the nine jurisdictions.
CoVPN / OWS COVID-19 Vaccine Efficacy Trial Immune Correlates SAP
Creators: name: CoVPN/OWS Biostatistics
Publisher: name: figshare
Year: 2020
Subjects: subject: 10402 Biostatistics
subject: FOS: Mathematics
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Medicine
subject: 110399 Clinical Sciences not elsewhere classified
subject: Diseases

description: This Statistical Analysis Plan (SAP) describes the statistical analysis of antibody markers measured at a key time point post last vaccination as correlates of risk and as various types of correlates of protection against primary and secondary endpoints in Operation Warp Speed (OWS)/COVID-19 Prevention Network (CoVPN) COVID-19 vaccine efficacy (VE) trials.
Growth Rate in the Dynamical Dark Energy Models
Creators: name: Avsajanishvili, Olga
name: Arkhipova, Natalia A.
name: Samushia, Lado
name: Kahniashvili, Tina
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark Energy models with slowly-rolling cosmological scalar field provide a popular alternative to the standard, time-independent cosmological constant model. We study simultaneous evolution of background expansion and growth in the scalar field model with the Ratra-Peebles self-interaction potential. We use recent measurements of the linear growth rate and the baryon acoustic oscillation peak positions to constrain the model parameter $α$ that describes the steepness of the scalar field potential.
description: 7 pages, 6 figures, discussions and references added; conclusions unchanged
Fits of $\psi(2S)$ NRQCD LDMEs to global hadroproduction data at NLO
Creators: name: Butenschoen, Mathias
name: Kniehl, Bernd A.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: quantum chromodynamics: nonrelativistic
higher-order: 1
meson: hadroproduction
color: octet
psi(3685)
transverse momentum

description: We fit the three color-octet long-distance matrix elements (CO LDMEs) $\langle {\cal O}^{\psi(2S)}({^1S}_0^{[8]})\rangle$, $\langle {\cal O}^{\psi(2S)}({^3S}_1^{[8]})\rangle$ and $\langle {\cal O}^{\psi(2S)}({^3P}_0^{[8]})\rangle$ of nonrelativistic QCD at next-to-leading order in $\alpha_s$ to 1001 data points of polarized and unpolarized inclusive $\psi(2S)$ meson hadroproduction. We are doing four different fits, in- and excluding polarized data or data with low- and middle $\psi(2S)$ transverse momentum. We find that a successful description of the data is only possible with a large low-$p_T$ cut, and our results are one order of magnitude more precise than previous determinations of these CO LDMEs.
Phenomenology of $t\bar{t}j + X$ production at the LHC
Creators: name: Alioli, Simone
name: Fuster, Juan
name: Garzelli, Maria Vittoria
name: Gavardi, Alessandro
name: Irles, Adrián
name: Melini, Davide
name: Moch, Sven-Olaf
name: Voss, Katharina
name: Uwer, Peter
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: subject: 530
subject: top: pair production
subject: top: mass
subject: quark: mass
subject: mass: renormalization
subject: CERN LHC Coll
subject: Specific QCD Phenomenology
subject: Top Quark

description: (2022).
description: We present phenomenological results for $t\bar{t}j + X$ production at the Large Hadron Collider, of interest for designing forthcoming experimental analyses of this process. We focus on those cases where the $t\bar{t}j + X$ process is considered as a signal. We discuss present theoretical uncertainties and the dependence on relevant input parameters entering the computation. For the ${\cal R}$ distribution, which depends on the invariant mass of the $t\bar{t}j$-system, we present reference predictions in the on-shell, $\overline{\mbox{MS}}$ and MSR top-quark mass renormalization schemes, applying the latter scheme to this process for the first time. Our conclusions are particularly interesting for those analyses aiming at extracting the top-quark mass from cross-section measurements.
Moderní Data Management Plánování (DMP), včetně praktické ukázky
Creators: name: Janíček, Milan
Publisher: name: Zenodo
Year: 2020
Subjects: FAIR Data
plán správy dat
data management plan
DMP

description: Data Management Plan (neboli plán správy dat) je dokument popisující různé aspekty správy dat v průběhu vědeckého projektu. Probereme, proč bychom měli takovému zamyšlení nad správou dat věnovat čas, a ukážeme si, jak si včas položit ty správné otázky.
description: Tato prezentace byla podpořena projektem OP VVV Rozvoj kapacit pro výzkum a vývoj UK II, CZ.02.2.69/0.0/0.0/18_054/0015222 (https://openscience.cuni.cz/OSCI-23.html).
Renormalization of three-quark operators at two loops in the RI'/SMOM scheme
Creators: name: Kniehl, Bernd
name: Veretin, Oleg L.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: subject: 530

description: We consider the renormalization of the three-quark operators withoutderivatives at next-to-next-to-leading order in QCD perturbation theory at thesymmetric subtraction point.This allows us to obtain conversion factors between the $\overline{\rm MS}$scheme and the regularization invariant symmetric MOM (RI/SMOM, RI${}'$/SMOM)schemes.The results are presented in $R_\xi$ gauge, both analytically in terms of a setof master integrals and in numerical form.They can be used to reduce the errors in determinations of baryonic light-conedistributions amplitudes in lattice QCD simulations.
Rural Industrialization in the Ozarks: Case Study of a New Shirt Plant at Gassville, Ark.
Creators: name: Jordan, Max F.
name: Jordan, Max F.
Publisher: name: Unknown
Year: 1967
Subjects: Community/Rural/Urban Development
Labor and Human Capital

description: Excerpt from the report Preface: This publication reports on the short-term economic impact of a shirt plant upon the local economy of a rural area of northern Arkansas. It describes the economy of the area at the time of the plant establishment in 1960 and examines the short-run impact of the plant through 1963.
Detection of an Unconventional Superconducting Phase in the Vicinity of the Strong First-Order Magnetic Transition in CrAs Using ^75As-Nuclear Quadrupole Resonance
Creators: name: Kotegawa, Hisashi
name: Nakahara, Shingo
name: Akamatsu, Rui
name: Tou, Hideki
name: Sugawara, Hitoshi
name: Harima, Hisatomo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Pressure-induced superconductivity was recently discovered in the binary helimagnet CrAs. We report the results of measurements of nuclear quadrupole resonance for CrAs under pressure. In the vicinity of the critical pressure P_c between the helimagnetic (HM) and paramagnetic (PM) phases, a phase separation is observed. The large internal field remaining in the phase-separated HM state indicates that the HM phase disappears through a strong first-order transition. This indicates the absence of a quantum critical point in CrAs; however, the nuclear spin-lattice relaxation rate 1/T_1 reveals that substantial magnetic fluctuations are present in the PM state. The absence of a coherence effect in 1/T_1 in the superconducting state provides evidence that CrAs is the first Cr-based unconventional superconductor.
description: 6 pages, 7 figures, Revised version + Supplemental Material, to be published in Phys. Rev. Lett
Pressure-induced structural effects in the square lattice (sql) topology coordination network Sql-1-Co-NCS·4OX
Creators: name: Patyk-Kaźmierczak, Ewa
name: Kaźmierczak, Michał
name: WANG, SHIQIANG
name: ZAWOROTKO, MICHAEL
Publisher: name: University of Limerick
Year: 2022
Subjects: subject: Chemical sciences
subject: FOS: Chemical sciences

description: A high-pressure study of a switching coordination network of square lattice topology (sql) loaded with o-xylene (OX), [Co(4,4′-bipyridine)2(NCS)2]n·4nC8H10 (sql-1-Co?NCS·4OX), was conducted up to approximately 1 GPa to investigate pressure-induced structural changes. Previous reports revealed that sql-1-Co-NCS exhibits multiple phases thanks to its ability to switch between closed (nonporous) and several open (porous) phases in the presence of various gases, vapors, and liquids. Networks of such properties are of topical interest because they can offer high working capacity and improved recyclability for gas adsorption. The monoclinic crystal structure of sql-1-Co-NCS·4OX at 100 K was previously reported to show an increase in interlayer separation of more than 100% compared to the corresponding closed phase, sql-1-Co-NCS, when exposed to gases or vapors under ambient conditions. Herein, a tetragonal crystal form of sql-1-Co-NCS·4OX (space group I4/mmm, Phase I) that exists at 0.1 MPa/303 K is reported. Exposure of Phase I to high pressure using penetrable pressure transmitting media (OX and 1:1 vol MeOH/EtOH) did not result in further separation of the sql networks. Rather, compression of the crystals and release of adsorbed OX molecules occurred. These pressure-induced changes are discussed in terms of structural voids, framework conformation, and molecular packing of the sql layers. Although Phase I retained tetragonal symmetry throughout the investigated pressure range, the interlayer voids occupied by OX molecules were significantly reduced between 0.3 and 0.5 GPa; further compression above 0.5 GPa induced structural disorder. Additionally, analysis of the electron count present in the pores of sql-1-Co-NCS confirmed the multistep evacuation of OX molecules from the crystal, and two intermediate phases, Ia and Ib, differing in the OX loading level, are postulated
Nonperturbative Dynamics Of Reheating After Inflation: A Review
Creators: name: Amin, Mustafa A.
name: Hertzberg, Mark P.
name: Kaiser, David I.
name: Karouby, Johanna
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Our understanding of the state of the universe between the end of inflation and big bang nucleosynthesis (BBN) is incomplete. The dynamics at the end of inflation are rich and a potential source of observational signatures. Reheating, the energy transfer between the inflaton and Standard Model fields (possibly through intermediaries) and their subsequent thermalization, can provide clues to how inflation fits in with known high-energy physics. We provide an overview of our current understanding of the nonperturbative, nonlinear dynamics at the end of inflation, some salient features of realistic particle physics models of reheating, and how the universe reaches a thermal state before BBN. In addition, we review the analytical and numerical tools available in the literature to study preheating and reheating and discuss potential observational signatures from this fascinating era.
description: v1: 44 pages, 9 figures. Invited review for the International Journal of Modern Physics D. For v2: Minor changes in text; 19 references added. For v3: Minor changes in text; 16 references added; similar to version to be published by IJMPD
Monopole ordered phases in dipolar and nearest-neighbours Ising pyrochlore: from spin ice to the "all-in--all-out" antiferromagnet
Creators: name: Guruciaga, Pamela C.
name: Grigera, Santiago A.
name: Borzi, Rodolfo A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study Ising pyrochlores by means of Monte Carlo simulations. We cover a set of exchange constants ranging from the frustrated ferromagnetic case (spin-ice) to the fully-ordered "all-in--all-out" antiferromagnet in the dipolar model, reinterpreting the results --as in an ionic system-- in terms of a temperature vs. magnetic charge density phase diagram. In spite of its spin nature and the presence of both double and single non-conserved magnetic charges, the dipolar model gives place to a phase diagram which is quite comparable with those previously obtained for on-lattice systems of electric charges, and on spin ice models with conserved number of single magnetic charges. The contrast between these systems, to which we add results from the nearest-neighbours model, put forward other features of our phase diagram --notably, a monopole fluid with charge order at high monopole densities that persists up to arbitrarily high temperatures-- that can only be explained taking into account construction constraints forced by the underlying spin degrees of freedom.
description: 9 pages, 10 figures
Chiral Bosonic Phases on the Haldane Honeycomb Lattice
Creators: name: Vasic, Ivana
name: Petrescu, Alexandru
name: Hur, Karyn Le
name: Hofstetter, Walter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Recent experiments in ultracold atoms and photonic analogs have reported the implementation of artificial gauge fields in lattice systems, facilitating the realization of topological phases. Motivated by such advances, we investigate the Haldane honeycomb lattice tight-binding model, for bosons with local interactions at the average filling of one boson per site. We analyze the ground state phase diagram and uncover three distinct phases: a uniform superfluid (SF), a chiral superfluid (CSF) and a plaquette Mott insulator with local current loops (PMI). Nearest-neighbor and next-nearest neighbor currents distinguish CSF from SF, and the phase transition between them is first order. We apply bosonic dynamical mean field theory and exact diagonalization to obtain the phase diagram, complementing numerics with calculations of excitation spectra in strong and weak coupling perturbation theory. The characteristic density fluctuations, current correlation functions, and excitation spectra are measurable in ultracold atom experiments.
description: 17 pages, 10 figures
Presentation of the START project at the World PM2022 Congress & Exibition
Creators: name: Neves, F.
Publisher: name: Zenodo
Year: 2022
Subjects: GREEN ENERGY HARVESTING
Powder Technology
START project
Tetrahedrite-based materials
Secondary raw materials

description: This document combines the two presentations of the project START made at the Industry Corner and at the European Functional Materials Group (EuroFM) meeting during the World PM2022 Congress & Exibition (9-13 October 2022, Lyon, France). The document provides a comprehensive summary of the START project, highlighting the relevance of green energy harvesting as a valuable solution to improve the overall energy efficiency and the importance of powder technology to the technological solutions proposed in START.
Análisis de redes sociales como metodología de investigación
Creators: name: Arroyo-Machado, Wenceslao
Publisher: name: Zenodo
Year: 2020
Subjects: análisis de redes
análisis de redes sociales
metodología
investigación

description: Presentación del curso Análisis de redes sociales como metodología de investigación del Programa de Doctorado en Historia y Artes.